41results about How to "Symmetrical arrangement" patented technology

The invention discloses a frequency-modulated multidimensional vibration damper comprising a movable platform, a fixed platform, a first sliding guide rod, a second sliding guide rod and four movable branch chains connecting the movable platform and the fixed platform. The vibration damper is characterized in that the vibration damper is designed on the basis of one multiple freedom degree parallel link mechanism; the four movable branch chains connecting the upper and lower platforms are the same in structure and are arranged symmetrically in the space, each movable branch chain is connected to the movable platform and the fixed platform through a cylindrical pair and a movable pair, spring damping systems are installed in the positions of the movable pairs of the fixed platform, movable adjusting devices are installed in the positions of the spring damping systems, and the multidimensional vibration isolation can be realized. The spring damping systems are capable of moving along the guide rods by rotating a spiral transmission device handle of the spring damping adjusting device, the optimal vibration isolation frequency range value changes, and the frequency modulation function is realized accordingly. The vibration damper is simple in manufacture process, low in cost and convenient to operate and has promised market prospect.

The invention discloses a large-pipe-diameter manual jacking pipe for space-separated excavation and an excavation construction method applying the jacking pipe. The jacking pipe includes a tool pipeand a concrete pipe, the tool pipe includes a blade feet section and a rectification section, the internal space of the blade feet section is divided by partition plates, the partition plates are composed of a horizontal middle partition and a vertical middle partition plate, the internal space of a steel pipe of the blade feet section is divided into three parts by the partition plats, specifically, an upper first space, an upper second space and a lower third space, and a rectifying device is fixedly connected into the jacking pipe. Through the transformation of the tool pipe, the problems of difficult jacking, large settlement and being prone to collapsing of a traditional jacking pipe in a sand pebble stratum can be solved effectively; the problems that a conventional tool pipe is large in an excavation tunnel face, secondary disturbance is more frequent in the process of manual excavation, and reinforced soil collapses in a bulk mode and falls down together with ungrouted soil atthe same time are avoided; and the efficiency of continuous work in the process of manual pipe jacking can be improved greatly, and the construction period and cost are saved.

The invention provides a lifting mechanism of a coke tank carrying crane, which relates to the lifting transportation and coking machinery; the lifting mechanism is composed of a winding drum group, a planetary reducer, a motor, couplings, brakes, a crown block group and a safety brake; the planetary reducer mounted on the pulley frame is provided with four input shaft ends and four output shaft ends which are symmetrically distributed. The four input shafts are arranged on the middle part of the planetary reducer and connected with the motor respectively through the couplings; the brakes are respectively mounted on the couplings; the four output shafts are arranged on both sides of the end part of the planetary reducer and connected with the single linkage winding drum group respectively; the safety brake directly acts on the winding drum edge of the single linkage winding drum group; the crown block group is mounted on the opposite side of the single linkage winding drum group. The lifting mechanism of the coke tank carrying crane has the advantages of novel structure, safety, reliability, great bearing capacity, symmetrically-distributed structure, even stress and being the lifting mechanism device of the novel coke tank carrying crane with economical and practical properties.

The application relates to a chain guard for a chainsaw with interchangeable cutting attachments of different lengths, said cutting attachments having cutting chains, wherein the chain guard comprises an insertion opening for inserting a cutting attachment, at least two side walls for covering lateral surfaces of the cutting attachment, a front end opposite the insertion opening, a first latching depression formed in at least one side wall, and a second latching depression formed in at least one side wall at a distance closer toward the insertion opening with respect to the first latching depression, wherein the first latching depression and the second latching depression each comprise an arcuate latching surface for latching in a form-fitting manner with a cutting chain of the cutting attachment, said latching being active in the direction of a longitudinal axis of the chain guard, and also to a chainsaw system having such a chain guard.

The invention relates to a ship for collecting kelps from a ship side. The ship comprises a main ship body, a cab close to a bow, an engine room casing close to the tail of the ship, a harvester transversely arranged close to the middle of the main ship body, a towing rope installed on the harvester and used for towing upwards and obliquely from outside to inside from the side, a kelp tip collecting cabin and a kelp main body collecting cabin, a first conveying belt arranged below the harvester and arranged on a main deck to correspond to the kelp tip collecting cabin, and a second conveying belt corresponding to the kelp main body collecting cabin, wherein the kelp tip collecting cabin and the kelp main body collecting cabin are transversely arranged between an engine room and the harvester; the projections of the towing direction of the towing rope attached to the harvester, the transportation direction of a seedling rope and the transportation direction of a transportation chain ona horizontal plane are all perpendicular to the side. In operation, the ship has the small shielding influence on a waterway and is beneficial to navigation safety; the harvester is not arranged at the front portion of the ship body so that the front-arranged cab can be arranged, and the problem of obstructing sight can be solved; and multiple harvesters can be arranged in parallel, so that the improvement of the harvesting efficiency is facilitated.

The invention relates to an arrangement structure for heat exchange tubes of a lateral steam feeding condenser for an axial steam discharging turbine, and aims to provide an improved tube distributing structure of a lateral steam feeding condenser. More heat exchange tubes can be arranged in a tube plate range with the same size, or under the conditions that the size of the condenser is the same and the number of the heat exchange tubes is also the same, the steam discharging resistance is lower, the steam discharging condensing effect is better, the lateral steam feeding condenser can run under the designed vacuum pressure, and the heat exchange efficiency of the lateral steam feeding condenser is guaranteed. According to the technical scheme, the tube distributing structure of the lateral steam feeding condenser comprises a plurality of tube bundles which are positioned in a cavity of the condenser, diffusion grooves which facilitates circulation of steam are formed among the tube bundles, and the axes of the adjacent diffusion grooves are arranged in parallel. The improved tube distributing structure of the lateral steam feeding condenser is characterized in that an included angle between the axis of each diffusion groove and the transverse central line of the condenser is 10-15 degrees so as to be matched with a diffusion angle of steam fed into an air inlet at the right end of the condenser.

The inventive device comprises a receiving system of sunlight reflected from a sunlight tilt reflection unit and a reflected sunlight receiving unit. A set of reflecting plates is mounted on a tilt reflecting support and the received sunray is reflected on the receiving system. The receiving system and the centre line of each reflecting plate are parallel. The driving mechanical unit mounted on the reflecting support makes the reflecting plates rotate, so as to track the angle change of the sun.

The invention relates to a brake which is fixed on the top of a lift car of an elevator guided by a left side guiding track and a right side guiding track. The brake comprises brake pieces, linkage parts and a driving part. The driving part drives the linkage parts to control the brake pieces to be attached to the guiding tracks for braking. The driving part comprises a hanging part and an elastic piece. The two ends of the elastic piece are connected with a first connecting point and a second connecting point of the hanging part. The linkage parts are provided with at least two clinchers which are distributed on the two sides of the guiding tracks. The braking pieces are arranged on the clinchers. After a steel wire rope is broken, the distance between the first connecting point and the second connecting point is compressed through the resilience force of the elastic piece, so that a hanging part body deforms, driving feet drive the clinchers to move along with deforming of the hanging part body, and the braking pieces are driven to clamp the guiding tracks. According to the brake, the number of structure components is small, structure is simple, production cost is low, and the elevator which falls down because of fault can be braked timely and reliably.

The invention discloses an oil tank body shaping machine, which comprises a frame, a lower shaping frame horizontally arranged on one side of the frame, at least one oil cylinder which is vertically arranged on the lower shaping frame and of which the piston rod extends upwards, and an upper shaping frame horizontally arranged at the upper end of the piston rod. The upper shaping frame and the lower shaping frame are symmetrically arranged; and an arc-shaped chamfer is formed on each side of the upper shaping frame and the lower shaping frame in the width direction. Two oil cylinders are symmetrically arranged; the upper shaping frame is arranged at the upper ends of two piston rods through two hinge bases; the upper end of each hinge base is fixedly connected with the upper shaping frame and the lower end of each hinge base is hinged with the upper end of a corresponding piston rod through a pin shaft; two groups of mutually symmetrical guide pieces are arranged between the lower shaping frame and the upper shaping frame; each group of guide pieces consist of a lower guide post and an upper conduit which are sleeved internally and externally and are vertically arranged; the lower end of the lower guide post is fixedly connected with the lower shaping frame; and the upper end of the upper conduit is fixedly connected with the upper shaping frame. The oil tank body shaping machine can conveniently shape the arc-shaped chamfer of an oil tank body, and has better shaping effect and higher efficiency.

The invention discloses a novel self-resetting shearing type lead damper. The novel self-resetting shearing type lead damper comprises a left lug plate, an auxiliary cylinder, a first spring, a main cylinder, an outer barrel, a lead core, an end cover, a right lug plate, a second spring, a first baffle and a second baffle, wherein the right end of the main cylinder and the right lug plate are connected into a whole through a thread pair, the left end of the main cylinder is embedded into the auxiliary cylinder to form sliding fit, the left end of the auxiliary cylinder and the left lug plate are connected into a whole through a thread pair, the first spring is arranged on the inner sides of the main cylinder and the auxiliary cylinder, the left end of the first spring and the left lug plate are fixed into a whole, and the right end of the first spring and the right lug plate are fixed into a whole; the outer barrel is arranged outside the main cylinder, the inner side of the left end of the outer barrel is connected with the auxiliary cylinder into a whole through a thread pair, and the inner side of the right end of the outer barrel is connected with the end cover into a whole through a thread pair; the first baffle is vertically arranged on the outer barrel, the second baffle is vertically arranged on the main cylinder, and the second spring is arranged between the first baffle and the second baffle; the lead core is embedded into a gap ring groove formed between the main cylinder and the outer barrel, the main cylinder drives the lead core to slide relatively when sliding, and energy is consumed in a shearing mode.

A torsional vibration damping device comprises a planetary transmission device assembly which is provided with a plurality of planetary gears which are meshed with a driving pinion which can be drivenby a shaft and at least one spring element for reducing the rotational non-uniformity of the driving pinion. The spring element (8) is arranged outside a hollow wheel (6) which surrounds the planetary gear (3) and rotates around a rotation axis of the driving pinion (4), the planetary gear (3) is meshed with the inner tooth part of the hollow wheel and is supported on the hollow wheel through oneend part and supported on a position fixed bearer (10) by the other end part.

The invention discloses a steam type micro free piston power generating device comprising a cylinder. The cylinder is provided with a piston working section, water tanks are arranged at the two ends of the piston working section, the exterior of the piston working section is wound with a stator winding, and the stator winding is connected to a rectifier; a piston mechanism is installed inside the piston working section, the two ends of the piston mechanism are provided with magnetic laminations, pressure relief ports are symmetrically arranged in the bottom of the piston working section, and each pressure relief port is connected to the corresponding water tank through a U-shaped pipe; and each water tank is equipped with a micro heating device. According to the designed steam type micro free piston power generating device, the heating devices and steam flow are controlled, a device system is more stable in the operation process, steam can enter a next working cycle during pressure relief, and cleanliness and high efficiency are better achieved.

The invention relates to a drill (1) for producing a drilled hole in workpieces comprising fiber-reinforced plastic, having at least one main cutting edge (7, 7') on the end face, with at least one secondary cutting edge (19, 19'), provided in the region of a circumferential surface (17) of the drill (1), and having at least one circularly ground lands (29), circumferentially adjoining the at least one secondary cutting edge (19, 19'). The drill is characterized in that the circularly ground lands (29) extend over a first longitudinal section (31) in the front area of the secondary cutting edge (19), and in that, in a following second longitudinal section (35), a secondary flank (37) circumferentially adjoins the secondary cutting edge (19).

The invention provides a novel prefabricated assembled pier connecting structure and a construction method thereof. The connecting structure comprises an assembled pier, a plurality of semi-grouting sleeves are arranged in the assembled pier, the multiple semi-grouting sleeves are used for connecting longitudinal steel bars located in the assembled pier and reserved steel bars located in a bearing platform, a plurality of concrete piles are in contact connection with the lower part of the bearing platform, a plurality of steel corbel structures are arranged on the plurality of concrete piles, and unbonded prestressed tendons are arranged on the plurality of steel corbel structures. The invention further provides a construction method of the connecting structure. The construction method comprises the steps of assembly prefabrication, bottom construction, prestressed tendon installation and hoisting. The bridge can be subjected to the self-resetting effect of the prestressed tendons in the two horizontal directions, the anti-seismic performance of the bridge in the longitudinal bridge direction and the transverse bridge direction is effectively improved, damage to the bridge piers can be reduced while the anti-seismic performance of the bridge can be improved, and meanwhile the repairability of the bridge after an earthquake can be greatly improved.

The invention relates to a part of a spinning machine. The part is provided with structural elements which are movably connected with each other through a shaft (1). Reliable operation of the part of the spinning machine can be ensured when temperature gradients occur, and therefore the shaft (1) is provided with an enclosure hood (2) with the inner diameter and the outer diameter, and an enhancement element (3) with the thermal expansion coefficient smaller than that of the enclosure hood (2), wherein the enhancement element (3) is fixed to the enclosure hood (2) in an inner diameter area.

The invention discloses a lift rope head damping device. The lift rope head damping device comprises a pair of vertical support plates, a rope head plate located between the pair of support plates andfixed to the pair of support plates, rope head rods which penetrate through the rope head plate and are used for being connected with a hoist rope of a lift and a rope head springs which are arrangedon the rope head rods in a sleeving manner and supported by the rope head plate. The lift rope head damping device further comprises a rope head cover plate and multiple elastic connection assemblies. One end of each rope head rod is fixed to the rope head cover plate. The rope head springs are compressed between the rope head cover plate and the rope head plate. The elastic connection assembliesare used for enabling the two sides of the rope head cover plate to be elastically connected to the support plates in a vertically movable manner, so that the rope head cover plate is elastically clamped between the pair of support frames and can move vertically. In this way, the dynamic stiffness of the rope head appropriates to zero when the lift operates, the first order natural frequency of alift system is greatly lowered, and the noise lowering and vibration isolating effects on the lift are improved.

The invention discloses an unloading mechanism of a hydraulic steering gear. The unloading mechanism comprises a casing, a steering screw, a steering nut, a first chamber, a second chamber, a first steel ball, a second steel ball and a screw plug, the surface of the end of the steering screw is provided with a positioning pin, one end of the screw plug is internally provided with a through hole, an external thread of the end of the screw plug is connected with an internal threaded hole of the steering nut in a matched manner, and an internal threaded hole in the other end of the screw plug isconnected with an external thread of one end of a valve seat in a matched manner. A connecting hole of the through hole inside the screw plug communicates with the internal thread hole of the other end of the screw plug, a stepped through hole is arranged inside the valve seat, the first steel ball is arranged at a port of the connecting hole, the first steel ball is connected with the second steel ball arranged in the stepped through hole through a connecting spring, the second steel ball is arranged in a large hole of the stepped through hole, and the casing is provided with a limiting screwextending into the second cavity. One unloading mechanism is used, and therefore occupied space is small, and the problem about insufficient space caused by the arrangement of small cylinder diameterproducts is solved.

The invention relates to a riveting clamp, and in particular to an assembly operation method of a bridge-shaped contact riveting clamp of a frame circuit breaker. The riveting clamp comprises bridge-shaped contacts and a bottom plate; two clamping devices which are distributed at an interval are arranged on the bottom plate; the bridge-shaped contacts which are detachably fixed are respectively arranged in the clamping devices; a punch riveting device is arranged between the two clamping devices; and the punch riveting device synchronously controls the two clamping devices. The high riveting speed is fast, and efficiency is high.

The invention relates to a novel well head device. The novel well head device comprises a well cover, a cover base and a wellbore. The cover base is arranged on the wellbore. The well cover is mountedon the cover base. The cover base is a circular ring with the L-shaped section and comprises a vertical boss and a transverse supporting platform. A plurality of notches are arrayed on the boss. Thewell cover is shaped like a basin and comprises a basin body and a basin edge. The basin body goes deep downwards into the cover base and the wellbore. The basin edge is erected on the well cover. Theportion, corresponding to the notches, of the interior of the basin edge of the well cover is provided with air holes used for discharging bad gas in a well. The bottom of the basin body is providedwith a drain hole. Through the novel well head device, the defects that an existing well cover occupies a land for greening and air holes are blocked easily and are not likely to be opened are changed.

The invention discloses a composite floor truss and a bottom bar arrangement method. The composite floor truss arrangement method comprises the steps of S2, calculating the number of distances betweentrusses, and specifically solving the number through the building of a loop algorithm and a screening function. According to the bottom bar arrangement method, the bottom bars and the trusses can beautomatically arranged according to rules through the sizes of prefabricated parts and the distances between reinforcing steel bars, the trusses and the bottom bars are symmetrically arranged and areuniform and attractive, the steel content of the concrete prefabricated parts can be effectively reduced, the production cost of the part is saved, and the design efficiency of the composite floor trusses and the bottom bars is greatly improved.

The bonnet (1) according to the invention for a vehicle has a lock bridge (2). The latter extends transversely with respect to the longitudinal direction of the vehicle. The lock bridge (2) is preferably arranged on the inside of the bonnet (1) in the front region in the direction of travel. The lock bridge (2) is particularly preferably arranged symmetrically with respect to the outer skin (11) of the bonnet (1). According to the invention, the lock bridge (2) has a lock element (22). The lock element (22) produces a releasable connection of the bonnet (1) to the vehicle.

The invention discloses a compensation moving dolly for a continuous casting steel moving machine, comprising a frame, a joist fixed on the frame and four wheels installed at two ends of the frame. The lower parts of two ends of the frame are fixedly provided with two guide boxes; each guide box is internally provided with a disc spring group, a guide rod and a guide plate; the disc spring groups and the guide plate are connected in series by the guide rod; the top end of the guide rod extends out of the guide boxes and is connected with a rope ring; the end part of the guide box is provided with a pressure plate which supports the guide rod; and the frame is fixedly provided with an upper heat prevention plate and a lower heat prevention plate. The invention is a compensation moving dolly for a continuous casting steel moving machine, which is novel in structure and symmetrically arranged, and has good performances such as heat radiation prevention, adjustable steel cable tensile force, disc spring buffering, large length compensation of steel cable close ring and the like.

The invention relates to the technical field of high-temperature strip steel cooling, in particular to an online cooling method and device for a hot-bent square and rectangular pipe. The hot-bending rectangular pipe comprises two side wall sets which are oppositely arranged, the two side wall sets on the same section are synchronously subjected to spray cooling and straightening pressure application respectively, and spray cooling and straightening pressure application are alternately and circularly conducted on side walls of each set. The method and the device have the beneficial effects thatthe two side wall sets on the same section are subjected to spray cooling and straightening pressure application at the same time, and straightening pressure application and direct spray cooling arealternately and circularly conducted, so that all side walls can be fully cooled, stress deformation of the hot-bent square and rectangular pipe can be overcome through stress, and the production quality of the hot-bent square and rectangular pipe is guaranteed.