179results about How to "Lower lifting height" patented technology

The invention relates to a construction method of a flexible arch bridge with rigid beams. Steel truss beams, a steel box arch and flexible hanging rods are divided into single members in a factory and manufactured in a segmented mode; by the adoption of the symmetrical cantilever erection method, installation of the rigid steel truss main beam is completed firstly; then, an arch rib is installed, a crane travels on an upper bridge deck, the arch rib is divided into two half arches, welding forming is conducted on the two half arches on the upper bridge deck, the arch rib is vertically rotated in place through auxiliary facilities such as vertical rotating hinges, temporary sling towers and temporary inhaul cables between the arch rib and the steel truss beams, and middle span closing of the arch rib is achieved. After installation of the steel truss beams and the arch rib is completed, flexible slings are installed on the upper bridge deck and tensioned, and installation of the main structure is completed. By the adoption of the construction method that the steel truss beams are installed first and then the arch rib is installed, construction difficulty of the arch rib is reduced, the hoisting height of the crane is reduced, the construction period is greatly shortened, construction costs are lowered, economic benefits are increased, structural integrality and stability of the large-span arch bridge are enhanced in the construction process, and construction risk is reduced.

The invention relates to a side-opened package box for transporting the whole satellite or a satellite cabin and belongs to the technical field of satellites. The package box mainly adopts a side-opened structure and comprises a box body, a box door, and a door open / shut mechanism. A guide rail A is arranged on the inner side of the box door and a guide rail B is arranged on the bottom surface of the box body. When the box door is opened, the guide rail A on the inner side of the box door and the guide rail B on the bottom surface of the box body are positioned on the same plane and can realize seamless connection through a transitional guide rail C; and after the box door is opened, a sliding trolley can freely slide on a horizontal guide rail formed by the guide rails A, B, and C. The door open / shut mechanism comprises a pulley block, a rocking handle, a reducer, and a cable wire, wherein the pulley block is mounted on the top surface of the box body, the reducer is mounted on a lateral surface of the box body, the rocking handle is mounted on the reducer, and the cable wire is connected with the reducer, the pulley block, and the box door sequentially. The invention has the advantages that no hoist is needed, the requirement on operation spaces in factory buildings is low, and the satellites can be taken into and out of the box conveniently, safely, and reliably.

The invention discloses a treatment method for dyeing and printing effluent. The method comprises the steps of primary settlement, filtration, hydrolytic acidification treatment, anaerobic treatment, oxidation treatment, coagulation decolorization treatment, photocatalytic treatment, activated carbon adsorption and ultrafiltration treatment. According to the treatment method for the dyeing and printing effluent, through effective combination of multiple technologies, the dyeing and printing effluent can be effectively treated, the effluent COD is smaller than or equal to 20 mg / L, the effluent BOD is smaller than or equal to 5 mg / L, the effluent SS is smaller than or equal to 5 mg / L, the sludge output is low, the effect is stable, the water quality meets 'The reuse of urban recycling water-Water quality standard for urban miscellaneous water consumption'(GB / T 18920-2002), and treated water can be applied to community and garden greening, road watering and the like.

The invention provides an aluminum bar low position bar feeding device applied to the technical field of aluminum profile production and processing. The bar placing surface (10) of a bar placing frameof the bar placing frame (1) of the aluminum bar low position bar feeding device is arranged of an inclined structure, a material stirring disc movably mounted on the side face of the bar placing frame (1) is connected with a bar overturning and supporting oil cylinder (3), and the bar overturning and supporting oil cylinder (3) is mounted on the side face of the bar placing frame (1); the bar overturning and supporting oil cylinder (3) is connected with a control part (4), and a lifting frame (5) is arranged at the end portion of one end of the bar placing frame (1); a bar feeding oil cylinder (6) is mounted on the lifting frame (5), and a bar input idler wheel (8) is arranged on the upper part of a feeding machine frame (7); and a bar supporting swing arm (9) is connected with the bar feeding oil cylinder (6). The aluminum bar low position bar feeding device has a simple structure, and a long aluminum bar can be conveniently, reliably and automatically transported from the bar placing frame into a heating furnace, low position bar feeding can be realized, so that the lifting and lowering height of the long aluminum bar is lowered, and the safety hazard of the heating operation of the long aluminum bar is eliminated.

The present invention concerns a hoisting device including a hoisting module which is replaceably connected with a coupling arrangement for a trolley which is mounted in a ceiling-mounted rail arrangement, where the coupling arrangement is provided in two sections, where the first section is mounted on the hoisting module, and the second section is mounted in connection with the trolley, and where the hoisting module includes a lifting strap arranged for rolling up and unrolling and for fastening a lifting bracket and / or lifting canvas, where the first section of the coupling arrangement is mounted releasably on the hoisting module, that the first section and the second section of the coupling arrangement are mutually connected with a wire connection which is connected with a winding arrangement that includes means dimensioned for lifting the weight of hoisting module, lifting bracket and lifting canvas.

Disclosed is a novel rubber-tyred mobile ship-loader, relating to a device for loading ships at docks. The left end of a walking mechanism (1) of the ship-loader is connected to the front end of a belt conveyer (2), and the right end of the walking mechanism (1) is connected to a middle part of the belt conveyer (2). A feeding device (4) is arranged above the front end of the belt conveyer (2), and a discharging cylinder system (5) is arranged on the tail end of the belt conveyer (2). A hydraulic control / hydraulic station (6) and an electrical device (7) are arranged on the walking mechanism (1). The novel rubber-tyred mobile ship-loader of the invention can increase the dock utilization rate and improve the average loading speed significantly. An electricity distribution system of the ship-loader adopts a dual-mode that one is adopting a mobile power station and the other is adopting a cable reel to receive shore power, which enables the whole system to be completely independent.

The invention provides a duct piece conveying device of a shield tunneling machine. The duct piece conveying device comprises a conveying beam, a transmission mechanism, a conveying trolley and a duct piece lifting device, wherein the conveying beam consists of a plurality of beam body sections which are sequentially hinged with one another; the transmission mechanism is mounted on the conveying beam and can drive the conveying trolley to travel along the conveying beam; and the duct piece lifting device is connected with the conveying trolley so as to realize the lifting and laying of duct pieces. According to the technical scheme provided by the invention, the steel wire rope trolley is driven to travel along the conveying beam through a hydraulic motor, so that the conveying efficiency is high, and the manual operating strength is low; the duct piece conveying device of the shield tunneling machine has the advantages of compactness, more optimized and reasonable structure, low cost and high reliability; and the lifting and laying of the duct pieces are realized through a steel wire rope and a pulley block by an oil cylinder, the lifting height is low, and the occupied tunnel space is less. The invention further provides the shield tunneling machine.

The invention discloses a mechanical stretching device and a seat unit, comprising a fixed bottom rod, a front support rod and a rear support rod rotating in a vertical plane, a cushion board and a backrest arranged on top of the front and rear support rods and connected a board, an ottoman couch, and an ottoman assembly for extending and retracting the ottoman couch; the bottom end of the front support bar is hinged to the front end of the bottom bar, and the bottom end of the rear support bar is hinged to the rear of the bottom bar, The top of the front support rod is hinged with the footrest assembly, and the upper part of the rear support rod is connected to the rear of the cushion board through the intersecting first connecting rod and the second connecting rod; Seat unit, the overall structure of the present invention is simple, two intersecting first connecting rods and second connecting rods are arranged between the cushion board and the rear support rod, the overall operation is stable, and the seat cushion can be rotated during the reclining process of the backrest board. It works by turning a small angle with the backrest, and at the same time can reduce the lifting height of the cushion board, improving the sitting comfort.

The invention discloses an around synchronization hydraumatic jacking process of upper module of an ultra-large marine oil platform. The around synchronization hydraumatic jacking process comprises the following steps of: step 1, arranging a jacking and supporting mechanism at the bottom of each landing leg; step 2, controlling a jacking device to jack a set height journey, supporting an upper structure by virtue of a radial arm, and enabling a jacking device to retract; step 3, enabling a support beam slippage rail to enter a position below the upper structure; step 4, the jacking device supports jacking the set height journey by virtue of the jacking device, rotating the radial arm to support the upper structure, and enabling the jacking device to retract; step 5, enabling a next group of support beam slippage rails to enter the lower part of the support beam, enabling the jacking device to retract, and jacking the upper module for a set height; step 6, repeating the step 3, the step 4 and the step 5 until jacking the upper module to a preset height; step 7, transporting a lower structure to the bottom of the upper module; step 8, enabling the jacking device to retract, and connecting the upper module and the lower structure in a butt joint manner; and step 9, unloading and dismantling auxiliary equipment. The jacking process provided by the invention can realize the multipoint and around synchronization jacking of the upper module and can be used for carrying out effective control on the lifting speed and the displacement precision.

A reactor of constant pressure and normal temperature as well as shell type consists of reactor container; in-pile component including bottom in-pile component with hanged cradle and plate set as well as top in-pile component with top support, guide cylinder of control rod and support plate of guide cylinder; fuel component and driving mechanism of control rod. It is featured as hanging reactor core at support stage in reactor container by utilizing middle flange of hanged cradle and using said flange to divide coolant in and out openings to be top and bottom layers for forming coolant channel passing through reactor core from bottom to top.

The invention relates to a truck with a movable bearing surface, which can self-load and self-unload by relying on self outfit when transporting large objects. The truck mainly consists of a speed and direction change driving axle for a separated and vertical swing arm suspension, a movable bearing surface of a carriage and a gantry lifting device. The swing arm suspension is arranged at the ends of the two beam axes in the back of the truck frame respectively, the front beam and the back beam fix a left longitudinal beam and a right longitudinal beam together, every swing arm is provided with a wheel, a supporting spring and a vibration absorber; the movable bearing surface of the carriage comprises an upper layer and a lower layer, the upper layer is divided into a left bearing board and a right bearing board of the upper carriage, the two boards are arranged outside the two longitudinal beams and the position is higher than the outer diameter of the wheel, the lower layer is divided into a front bearing board and a back bearing board of the lower carriage, the two boards are arranged inside the two longitudinal beams and the position height can be lower than the radius of the wheel, wherein, the back bearing board must be movable; the gantry lifting device comprises a portal frame that is arranged above the carriage, a longitudinal beam at the top of the portal frame and a hanging hoist that is arranged on the longitudinal beams and can move along the longitudinal beams.

The invention belongs to the technical field of water conservancy and hydropower engineering and provides a fixed double-suspending point cantilever track type purlin suspender mainly comprising support legs, cantilever longitudinal beams, a translational transverse beam, a lifting mechanism, a translational traction mechanism, a balancing mechanism and a suspending appliance, wherein the support legs for supporting the two cantilever longitudinal beams are arranged on a gate pier, and the translational transverse beam is spanned on the two cantilever longitudinal beams and is connected with slideways of the cantilever longitudinal beams through slide blocks arranged on the translational transverse beam; the lifting mechanism is installed at both ends of the translational transverse beam; the translational traction mechanism is respectively connected with both ends of the translational transverse beam; and the balancing mechanism is installed at the tails of the cantilever longitudinal beams and is connected with a ground anchor of the gate pier. The fixed double-suspending point cantilever track type purlin suspender is especially suitable for the hoisting construction of dam-crest gantry crane track beams of large-tonnage gate dam type hydropower stations with narrow fields, simple roads, high hoisting height and difficult construction of large-scale hoisting equipment and has the advantages of simple structure, low fabricating cost, convenient operation, strong adaptability to construction sites, high hoisting height and low investment due to the adoption of universal appliances and equipment.

The invention provides a method and a device for operating a composite mixing plant which is low in cost and has the advantages of a first-order mixing plant and a second-order mixing plant. The method comprises the following steps of: putting aggregate into a mixing tank; conveying the aggregate to a specified position by using a transmission device along the mixing tank, and putting the aggregate in an electronic scale; and metering the aggregate by using the electronic scale and putting the aggregate in a mixer. The invention has the advantages that: a feeding funnel and the mixing tank are integrated, opening and closing of the bottom of the mixing tank are controlled through the transmission device, the device has a simple structure, the equipment occupies small area and is low in construction cost, and construction cost of civil engineering is low; meanwhile, because an intermediate funnel is canceled, compared with that of the first-order and second-order mixing plants, lifting height of the aggregate is reduced, the energy consumption in operation is low. The actual production efficiency is the same as that of the first-order mixing plant, the aggregate can be repeatedly added, and the mixing precision is high.

The invention provides a fish gathering and conveying system for a water diversion type power generation high dam. A water diversion system, a fish gathering channel, a fish inducing channel, an elevating system and a counting and temporary rearing system are included. The fish gathering channel and the fish inducing channel are arranged in parallel. The front end of the fish gathering channel andthe front end of the fish inducing channel get into water, the rear end of the fish gathering channel and the rear end of the fish inducing channel communicate with the vertically-fixed elevating system, the upper portion of the elevating system communicates with the horizontally-fixed counting and temporary rearing system, and the bottom of the other end of the counting and temporary rearing system is connected with a pipeline capable of stretching into a movable body fish conveying vehicle. The water diversion system is arranged in the fish gathering channel and the fish inducing channel for diversion. According to the fish gathering and conveying system, in the aspect of the fish passing effect, the effect that the attraction force of the attraction flow of the fish gathering and conveying system is increased, and the power generation tail water competing flow attraction force is reduced is enhanced; and meanwhile, fish inducing channel attraction flow and fish gathering channel attraction flow are gathered into one strand of attraction flow at an inlet, and the attraction flow attraction range is greatly enlarged.

The invention discloses a novel roadbed structure for phreatic high inland sulphate salty soil. The structure sequentially comprises an embankment, a drainage device, a separating-discharging saline layer, a lower roadbed layer, an insulating separation layer and an upper roadbed layer from bottom to top. The drainage device and the separating-discharging saline layer are arranged above the phreatic line and below the salt expansion line. The separating-discharging saline layer is arranged in the embankment, wherein the lower bottom face is 30-50cm higher than the phreatic line. The drainage device is respectively arranged at the axle wire of the embankment and the embankment below the separating-discharging saline layer. The separating-discharging saline layers on both sides of the axle wire incline downward in the middle at 5-8 degrees. The lower roadbed layer is 30-50cm thick, the insulating separation layer is 30-50cm thick, and the upper roadbed layer is 20-30cm thick. According to the roadbed structure provided by the invention, the roadbed is dried and moderately wet to prevent heat and water of the lower roadbed from loss due to evaporation, so that the temperature change amplitude of the roadbed is reduced, the temperature of the roadbed is stable, saline transfer is reduced, the roadbed elevation height can be reduced, and the digging and filling amount for roadbed pavement can be reduced.

The invention relates to a direct-push unloading type bucket of a battery forklift truck, the main structure consists of a beam, a coal pushing board, a coal pushing device, coal pushing oil cylinders, an oil cylinder seat, a shovel board, a front shovel board, a hinged disc, a hinged seat and a stop block and adopts the design of combining shoveling, transporting and unloading, wherein, the frontshovel board is arranged at the front part of the shovel board for completing shoveling and clearing, the coal pushing board, the coal pushing device and three telescopic coal pushing oil cylinders are arranged for completing the direct-push unloading, the forklift truck can complete the transportation and the unloading of materials without the need of being excessively elevated after shoveling the float coal materials, thereby not only saving lifting power energy, but also being safe, stable and reliable and being applicable to underground small space. The bucket has the advantages of advanced and reasonable design, compact structure, and convenient installation and use, thereby being the very ideal direct-push unloading type bucket of the battery forklift truck, and the bucket can be also used on other similar engineering vehicles.

The invention provides a wave gliding device easy to recycle and a recycling method for the wave gliding device. The wave gliding device easy to recycle comprises a floating body and a submerged body. A computer control system and a wireless antenna are arranged on the floating body. The wireless antenna communicates with a radio station on a mother ship. The submerged body is provided with a submerged body steering engine and a rudderstock. An umbilical belt is arranged between the floating body and the submerged body. A lifting hook and lifting belt releasing device is further installed on a rigid support of the submerged body. A lifting point is arranged on the hook and lifting belt releasing device and connected with a lifting belt. A lifting hook is arranged at the end of the lifting belt. The rudderstock is connected with a flexible line. The end of the flexible line is fixedly connected with a locking pin of the lifting hook and lifting belt releasing device. The wave gliding device is simple in structure and easy to achieve, the state of the lifting hook and lifting belt releasing device is controlled through the arranged locking pin, the lifting belt and the lifting hook are released reliably and simply, and after the lifting belt and the lifting hook float out of the water surface, recycling work can be conducted.

The invention relates to a fan foundation structure in the beach wind power field, mainly comprising a fan foundation upper bearing platform, a barrel-shaped foundation structure type formed by the surrounding wave walls and a drainage facility which is arranged on the foundation surface and drains the water from interior to the exterior. The top surface elevation of the fan foundation can be appropriately lifted up according to the elevation of beach surface; the wave walls which are arranged around the foundation are used for retaining the tidewater, so as to ensure that the fan tower frame steel structure is not soaked and corroded by the seawater. During the construction of the fan foundation, the foundation construction difficulty is reduced owing to the small elevation difference of the casting surface and the beach surface; after the existing beach surface is locally levelled and structurally disposed, a fan hoisting platform can be directly formed, thus reducing the engineering quantity of cubic metre of earth and stone of the fan hoisting platform, saving the engineering investment and shortening the construction period; on the fan hoisting aspect, as the hoisting platform is basically flush with the fan foundation surface, the fan foundation structure has the advantages of smaller hoisting height, convenient hoisting, and low hoisting expense, etc. compared with the existing beach fan foundation types.

The invention discloses an automatic drilling device of a short material sawing and drilling all-in-one machine. The automatic drilling device comprises a sawing, discharging and conveying device, a transverse material turning and temporary storage device, a transverse stepping feeding device, a drilling device and a drilling discharging device, wherein the sawing, discharging and conveying device is used for longitudinally conveying sawn bars; the transverse material turning and temporary storage device is used for transversely turning and conveying the longitudinally-placed bars to a temporary storage material frame; the transverse stepping feeding device is used for feeding the bars on a material taking station to a drilling supporting station in a stepping mode; the drilling device comprises a drilling machine base and a drilling supporting device, the drilling supporting device is used for supporting the bars conveyed by the transverse stepping mechanism, and a drill bit component and a drilling clamping device are longitudinally arranged on the drilling machine base in a sliding mode; and the drilling discharging device is used for discharging the bars on the drilling supporting device. According to the automatic drilling device, the bars can be automatically conveyed to the drilling device one by one to be drilled after the bars are sawn, so that the production efficiency is improved, and meanwhile, the occupied area of the whole equipment is smaller.

The invention provides a method for hoisting an inclining shuttle-shaped space truss, which includes the following steps that: the truss is bound in a single-rope and double-pivot mode; two cranes are provided and two suspension points are arranged under the cranes; the truss is assembled and is horizontally hoisted after the assembly is finished; when a lifting height exceeds a low side in-situ height of the truss, the two cranes stop lifting; after the truss is stable, the low side crane stops lifting, and the high side crane continues lifting and finally stops lifting after the lifting height exceeds a high side in-situ height of the truss; the two cranes work cooperatively, so that big arms of the two cranes extend forward or withdraw backward, and the truss is hoisted to be right above the in-situ state; hooks are lowered from the cranes until two bearing balls of the truss fall on bearings at the tops of columns so as to finish the primary placement; the truss is corrected; and the bearing balls of the truss are welded on the bearings at the tops of the columns, and the track cranes loosen the hooks and the hoisting operation is finished. The above method lowers the hoisting height, reduces a horizontal stress generated by the hoisting operation, and enables horizontal hoisting members to be put in place rapidly and stably.

The invention relates to forging equipment. The forging equipment comprises a forging frame, a forging hammer moving up and down along the forging frame, and a driving motor for driving the forging hammer to move; a forging cutting board and an electromagnetic device are arranged at the bottom of the forging frame corresponding to the forging hammer; the electromagnetic device comprises an electromagnetic coil and a driving circuit; the electromagnetic coil is arranged at the bottom of the forging cutting board and fixedly connected with the forging cutting board; and the driving circuit controls the electrifying state of the electromagnetic coil. In addition, the invention further relates to a forging method; specifically, the forging hammer freely drops down after being lifted to reach aspecific height; and when the forging hammer drops down, the electromagnetic device is controlled to conduct to generate magnetic force so as to improve the forging strength. The forging equipment has the following beneficial effects: (1) the electromagnetic device magnetizes the forging cutting board and a contacted mold, so that the forging strength is improved, the lifting height of the forging hammer is greatly reduced, and the energy consumption is effectively reduced; and (2) the electromagnetic device fixes the forging mold to effectively prevent the technical problem of displacement of the mold in the forging process.

The invention relates to the technical field of beam replacement equipment of a double-T beam bridge and provides a beam replacement construction system of the double-T beam bridge. The beam replacement construction system comprises a beam replacement machine arranged at the position of beam replacement, the beam replacement machine comprises a main beam, two beam hanging carts capable of moving along the lengthwise direction of the main beam are arranged on the main beam, the main beam is erected on the bridge floor through a front guide pillar and a rear guide pillar, both the front guide pillar and the rear guide pillar are of telescopic structures, the beam replacement process is unaffected by natural conditions such as wind and cannot cause deviation to a fall beam, and beam replacement efficiency is improved; one set of special beam conveying trains, beam conveying carts and inverted gantries which are used for conveying an old beam and docking a new beam are respectively arranged on two sides of the beam replacement machine. By the arrangement, lifting height of the equipment can be effectively reduced during construction, team replacement of T-shaped beams is smoothly completed under the working conditions of construction limit requirements, and the fact that beam replacement construction of the full-span simply-supported T-shaped beams in a 'skylight point' is completed safely and efficiently on the premise of not causing any unnecessary impacts on original line equipment can be guaranteed.

The invention relates to technical field of double-T-shaped beam bridge beam-erecting equipment, and provides a bridge erecting machine of a double-T-shaped beam bridge. The bridge erecting machine comprises a main beam, two beam-hoisting trolleys which can move in the length direction of the main beam are arranged on the main beam, and the rear portion of the main beam is erected on a bridge floor through a telescopic rear guiding pillar; a telescopic front guiding pillar is arranged at the front portion of the main beam, the front guiding pillar is erected on a pier at the position with a beam to be erected through a lengthening section at the bottom, and supporting legs which can move in the length direction of the main beam are arranged at the front portion of the main beam; and the beam-hoisting trolleys comprises moving trolley bodies and horizontally-moved transverse crossing beams. According to the bridge erecting machine of the double-T-shaped beam bridge, overall hole passingof the equipment can be completed only through mutual cooperation of the three supporting legs, operating is simple, steps are definite, the hole passing time of the equipment is greatly reduced, andthe hole passing efficiency is improved; and in addition, through the lifting front guiding pillar and the rear guiding pillar, overall lifting of the equipment can be achieved, so that the beam-changing process is not affected by natural conditions such as wind force, error does not occur during beam falling, and the beam changing efficiency is improved.

The invention discloses an installation method for a full-rotation steering oar. The method includes the following steps that firstly, before installation, a split type full-rotation steering oar is produced, wherein the split type full-rotation steering oar comprises an upper half full-rotation steering oar section and a lower half full-rotation steering oar section; and secondly, in the installation stage, the upper half full-rotation steering oar section is lifted to a hull base to be fastened from the interior of an auxiliary hole above a stern deck, and the lower half full-rotation steering oar section is jacked from the bottom of a stern to be connected with and fastened to the upper half full-rotation steering oar section. The method solves the problems that the requirement for the equipment arrival receiving period is high, the operation safety coefficient is low, and the installation manufacturability is poor.

The invention discloses a swinging arm type underslung crane. The swinging arm type underslung crane comprises a bearing beam, a sliding track, a swinging arm, a connecting wheel, a rotating shaft anda balance beam, wherein a main sliding block in which a pulley is arranged is mounted below the sliding track; the pulley is mounted on the sliding track; a motor is arranged at one side of the mainsliding block which is mounted on the bearing beam; a secondary sliding block is mounted at the bottom part of the bearing beam; a rotating shaft is mounted at the bottom part of the secondary slidingblock; a fixing support is arranged at the bottom end of the rotating shaft, and the rotating shaft is connected to the swinging arm through the fixing support; a balancing weight is arranged at oneend of the swinging arm, and a winding drum is mounted at the other end of the swinging arm. The swinging arm type underslung crane has the beneficial effects that the swinging arm and the rotating shaft are designed; the swinging arm can rotate to change the direction during hoisting in order to take objects out of rack the sliding track, thus heavy objects in a special area can be carried out; the swinging arm type underslung crane is uniform to stress, convenient to maintain, and wide in applicable scope.

The invention discloses a flexing frame applied to a seat unit and the seat unit, and belongs to the technical field of furniture. The flexing frame comprises a fixed bottom bar, a front supporting bar, a back supporting bar, a cushion plate, a backrest plate, at least one foot stool couch and a foot stool assembly, wherein the front supporting bar and the back supporting bar rotate in a vertical plane, the cushion plate and the backrest plate are arranged at the top of the front supporting bar and the top of the back supporting bar and are connected, and the foot stool assembly is used for stretching and retracting the at least one foot stool couch; the bottom end of the front supporting bar is hinged at the front end of the bottom bar, the bottom end of the back supporting bar is hinged at the back part of the bottom bar, the top end of the front supporting bar is hinged with the foot stool assembly, the top end of the back supporting bar is connected with the back end of the cushion plate through a first connecting rod, and a first transmission part and a second transmission part which are mutually matched are respectively arranged at the back end of the cushion plate and the top end of the back supporting bar. The flexing frame applied to the seat unit and the seat unit, which are provided by the invention, have the advantages that the whole structure is simple, components are a few, the mounting efficiency is high, and the production costs are effectively reduced; mutually matched driving tooth and driven tooth are arranged between the cushion plate and the back supporting bar, so that the whole device runs smoothly and stably, and the use stability is great.

The invention provides a thermal hydrolysis pretreatment process device for sludge with high solid content based on anaerobic digestion. The device comprises a preheating kettle, a reaction kettle and a pressure-relief kettle which are each provided with a stirring unit, and a steam supply system used for supplying steam. The device is characterized in that steam inlets (8, 15) of the preheating kettle and the reaction kettle are arranged close to the lower of side walls, wherein steam distributors in the kettles are annular wall-adhered tubes with holes which are provided with a high-temperature resistant filtering layer for preventing blockage; the pressure-relief kettle is a flash evaporation kettle with a tank body provided with a water-cooling interlayer, wherein opening time and flow rate of water in the water-cooling interlayer are controlled through a temperature-detection and flow-control interlocking unit, and a reflux-steam pipeline of the pressure-relief kettle and a straight-through pipeline of the steam supply system are in parallel connection and maintains a communication state; and stirring blades of the stirring units in the preheating kettle and the reaction kettle are of a screw coiled shape consistent with rotating direction. The thermal hydrolysis pretreatment process device provided by the invention can improve gas productivity and treatment capacity of anaerobic digestion for the sludge to the greatest extent, and reduces construction cost and operation cost; meanwhile, solid content of treatable sludge is high (12% to 15%), and content range of organic matters is broad (60% to 35%).

The invention relates to the technical field of T-shaped beam bridge beam-erecting methods, and provides a bridging method for a T-shaped beam bridge. The bridging method comprises the steps that during hole passing, a front guiding pillar and a rear guiding pillar of a bridge erecting machine shrink, and two beam-hoisting trolleys on a main beam are supported on an erected beam bridge deck; the main beam is driven to move forward, so that the front guiding pillar and the rear guiding pillar are moved to the position above two piers at the beam-erecting position correspondingly, and the frontguiding pillar and the rear guiding pillar are stretched downward and supported on the two piers at the beam-erecting position; and during beam erecting, the two beam-hoisting trolleys are matched with a beam transporting trolley for conducting beam feeding, and after a new beam to be erected is transported to the position above the beam-erecting position, the new beam to be erected is erected onthe piers. According to the bridging method for the T-shaped beam bridge, overall hole passing of equipment can be completed only through mutual cooperation of three supporting legs, operation is simple, the hole passing time of the equipment is greatly reduced; and in addition, through the lifting front guiding pillar and the rear guiding pillar, overall lifting of the equipment can be achieved,so that the beam-changing process is not affected by natural conditions such as wind force, and errors do not occur during beam falling.

The invention discloses a crawler type air-suspension transport vehicle. The crawler type air-suspension transport vehicle comprises a chassis, wherein a power system and a control system are arranged on the chassis, and crawler walking mechanisms in left-right symmetry and the same structure are respectively arranged on the left side and the right side of the bottom of the chassis; a frame is arranged in the middle part of the chassis; an upper bracket is arranged at the top of the frame; a bearing plate is horizontally arranged on the upper bracket; a lower bracket is arranged at the bottom of the frame; two air-jet load bearing devices are respectively arranged on the left side and the right side of the lower end of the lower bracket; each air-jet load bearing device is positioned at the inner part of the corresponding crawler walking mechanism; the front end and the rear end of each air-jet load bearing device are connected with the corresponding crawler walking mechanism through connecting rod mechanisms respectively; a spring is arranged between the chassis and each crawler walking mechanism; an air compressor and a high-pressure air storage tank are arranged in the frame; the outlet of the high-pressure air storage tank is connected with the air inlet of each air-jet load bearing device through a high-pressure air tube. The crawler type air-suspension transport vehicle disclosed by the invention is convenient to operate and control, easy to manufacture, low in cost, little in energy consumption, and high in safety and reliability, so that the crawler type air-suspension transport vehicle is especially suitable for transporting heavy cargoes at wharfs and ports.