88results about How to "Adapt to installation" patented technology

The invention provides a method for optimally designing a microphone array by taking acoustic propagation correlation loss into consideration. According to the method, a correlation loss model is established for the problem of correlation loss occurring when an acoustic wave is propagated at a long distance in a civil aircraft flight test, and evaluation for the array side-lobe suppression level and resolution performance parameter is carried out based on the model; and optimizing coordinates of an array unit by taking the array side-lobe suppression level and resolution performance parameter under influence of correlation loss problem as objective functions and utilizing a quick non-dominated sorting genetic algorithm. The method overcomes the defect in an existing method, can be used for providing the array unit arrangement with comprehensively optimized side-lobe suppression level and resolution and still has excellent performance under the influence of correlation loss problem, and is adaptive to the optimal design of an array for developing pneumatic noise measurement of a microphone phase array for flight tests.

The invention belongs to the field of mechanical automation, and particularly relates to a pipeline all-position operation machine and control method thereof. The operation machine comprises a guide rail, a motion unit, an executive terminal, a driving unit and a control unit, wherein the motion unit conducts peripheral motion along the guide rail; one end of the motion unit is connected with the executive terminal; the output end of the control unit is connected with the input end of the driving unit; the output end of the driving unit is connected with a driving motor of the motion unit; the driving unit receives pulse signals sent out by the control unit and drives the driving motor of the motion unit to conduct corresponding motions; the motion unit comprises a peripheral motion mechanism, an axial motion mechanism, a radial motion mechanism and a swing mechanism which are capable of conducting independent motion driven by motors; the peripheral motion mechanism is provided with a scan mechanism. The operation machine has the function of automatically conducting pipeline cutting and welding, the defect of manual operation on irregular pipelines is overcome, and real-time detection and automatic adjustments are achieved.

The invention relates to the field of automobile brake systems, in particular to an electric brake including a kinetic friction plate and a static friction plate arranged on two sides of a brake disc, wherein the kinetic friction plate is fixed on an actuating mechanism, the actuating mechanism is connected with an electromotor, the kinetic friction plate is driven by the actuating mechanism to get far away from or close to the brake disc, the kinetic friction plate is clung onto the brake disc to realize brake, and the brake is released when the kinetic friction plate gets far away from the brake disc. The electromotor is adopted for providing power, and a complicated hydraulic system is not required, so that the structure can be simplified, the volume of the brake can be reduced, leakage and a series of problems caused by hydraulic drive can be avoided, and the electric brake is suitable for entire automobile installation.

The invention discloses a sectional type multi-stage centrifugal pump equipped with adjustable guide vane devices. The sectional type multi-stage centrifugal pump comprises a suction section, a primary impeller, the adjustable guide vane devices, a middle section, secondary impellers, a discharge section, a pump shaft, a shaft sleeve, impeller spacer rings, a sliding bearing, a rolling bearing, a flexible connector and an external prime mover, wherein the impellers are connected and assembled on the pump shaft through keys; the adjustable guide vane devices are assembled in the middle section; the adjustable guide vane devices collect liquids pressurized by the impellers and reduce the flow velocity, and the liquids are discharged from the discharge section and sent into a pipeline system. According to the adjustable guide vane devices, the angles of guide vanes can be adjusted according to the pressure at a water pump outlet, so that the water pump operates at an efficiency optimized working point under any working condition, the hydraulic efficiency of the water pump under the working condition of part load or overload is improved, the operation efficiency of a water pump system, especially a variable-frequency or variable-flow water pump system, is improved, and the energy consumption of the water pump system is saved.

The invention discloses a broken belt protecting device of a gantry belt conveyor and relates to a broken belt protecting device of a mine gantry belt conveyor. The broken belt protecting device comprises a frame 1, a broken belt braking system and a driving system, wherein the broken belt braking system comprises a brake beam 4, a main shaft 2 and a drive cylinder 14; the main shaft 2 contains an upper shaft and a lower shaft, the both ends of the main shaft 2 are separately arranged on the frame 1 through a bearing seat 7; the brake beam 4 contains two beams, the middle of the brake beam 4 is arranged on the main shaft 2 through two positioning sleeves; one end of the main shaft 2 extends out of the frame 1, a drive lug 9 is arranged on the extending part of the main shaft 2; the drive lug 9 is hinged with one end of a drive connecting rod 6 through a pin I3, the other end of the drive connecting rod 6 is hinged with the piston rod of the drive cylinder 14 through a pin II5; and the cylinder body of the drive cylinder 14 is hinged with the frame 1 through a cylinder pin 15. The brake surface of the brake beam is an inclined plane, the braking force is powerful, and the overall height of the device is low so that the device is applicable to the smaller roadway.

The invention relates to a steam box and microwave oven integrated machine. The steam box and microwave oven integrated machine comprises a box body (1), a cooking room furnace chamber (11) arranged inside the box body (1), a steam generation system, a microwave generation system, a furnace door assembly (4) and a control system, wherein the steam generation system is arranged inside the box body (1) and used for providing steam to the cooking room furnace chamber (11), the microwave generation system is arranged inside the box body (1) and used for providing microwaves for the cooking room furnace chamber (11), the furnace door assembly (4) is arranged on the front side of the box body (1) and used for sealing the cooking room furnace chamber (11), and the control system is arranged inside the box body (1) and connected with the steam generation system and the microwave generation system. The steam generation system comprises a steam generator (2) used for generating steam. The microwave generation system comprises a magnetron (3-5), a power source component providing a power source for the magnetron (3-5) and a microwave waveguide assembly (1-4) used for guiding microwaves generated by the magnetron (3-5) into the cooking room furnace chamber (11). The steam box and microwave oven integrated machine is characterized in that the steam generator (2) is arranged on one side of the top of the cooking room furnace chamber (11), and the power component providing the power source for the magnetron (3-5) is arranged on the other side of the top of the cooking room furnace chamber (11). The structural arrangement is reasonable.

The invention aims to provide an electric junction box and an electric appliance, and mainly solves the problems that an existing terminal bracket cannot effectively protect terminals and connection wires. The electric junction box comprises a bottom plate, side plates and a terminal fixing part, wherein the side plates are connected with the bottom plate to define an accommodation space; and the terminal fixing part is arranged on the bottom plate and / or the side plates and used for fixing the terminals in the accommodation space. The electric junction box further comprises a wire harness outlet, wherein the wire harness outlet is communicated with the accommodation space. The side plates and the bottom plate form the accommodation space, so that the electric junction box can effectively protect the terminals and the connection wires.

The invention relates to a horizontal continuous casting machine. A mounting method of a banana-shaped seat of a horizontal continuous casting machine comprises the steps of a, banana-shaped seat mounting operation, wherein after a bottom plate is aligned, a crane of a workshop is used for lifting the banana-shaped seat, or two cranes are used for lifting, when the banana-shaped seat is close to the positioning face of a base, a guide rod is inserted for guiding and positioning, and connecting bolts penetrated between the bottom plate and the banana-shaped seat are primarily tightened; b, banana-shaped seat measuring, wherein it is ensured that the whole distorting deviation of the banana-shaped seat is within the allowable range; c, banana-shaped seat adjusting, a gasket set below the bottom plate is used for adjusting the mounting position of the banana-shaped seat until an optical instrument observes that all deviations are within the error allowable range, foundation bolts are symmetrically tightened, meanwhile, the optical instrument is erected for observing, and whether space coordinate position moving of a positioning pin is caused by mis-operation of tightening of the foundation bolts or not is determined. Construction difficulty is effectively reduced, and meanwhile, mounting precision needs are ensured.

The invention relates to the technical field of fabricated ceilings, in particular to a fabricated bathroom ceiling structure and a mounting mode thereof. The structure comprises a hanging piece connected to a wall body, a keel arranged on the hanging piece, and the panel arranged on the keel through the hanging piece, wherein the hanging piece comprises a bearing piece for the keel to be in lap joint, the hanging piece comprises a lap joint piece in lap joint with the keel, the bearing piece and the lap joint piece are each provided with a mounting hole, the structure further comprises a screw penetrating through the mounting hole, a shock pad is arranged at one end of the screw, a fastening nut is arranged at the other end of the screw, and the shock pad is connected to the keel in an abutting mode. According to the structure, after lap joint, connection is reinforced through a screw connecting structure provided with the shock pad, rigid connection can be converted into flexible connection with certain toughness, the kinetic energy absorption work efficiency is achieved, the influence of vibration and shaking on the ceiling mounting quality can be reduced, and the structure has better adaptability to the vibration effect and the building settlement effect.

The invention relates to a central air-conditioning air flue with a slit valve. The air flue is provided with an air flue body and 3-5 air outlets; and the air outlets are square, the side length of the air outlets is a, the air outlets are formed on a base plate of the air flue, and the cross section of the air flue body is rectangular. The central air-conditioning air flue is characterized in that an air guide passage installed in a manner of being closely attached to the base plate of the air flue body is arranged inside each air outlet, and each air guide passage is divided into an air inlet, a passage body and an air outlet flow guide section, wherein each air inlet faces the direction of an air source, and the air inlets and the passage bodies are in shapes of arches with same semi-circle cross sections. The passage bodies are connected with the air outlets through the air outlet flow guide sections in an arc-shaped smoothing manner, the distances between the sides, close to the outer airs, of the edges of projections of the passage bodies on the base plate of the air flue body and the lateral edges of the air outlets range from 0.1 a to 0.2 a, the length of the passage bodies ranges from 1 a to 2 a, and the length of the air inlets ranges from 0.5 a to 0.8 a; one-way valves opening inwards are arranged at inlets of the air inlets, the valves are opened and closed through torsion springs, slit-shaped holes are arranged on the valves, and the slit directions of the slit-shaped holes are parallel to the base plate of the air flue body; and the door plank porosity of the valve closest to the air source ranges from 55% to 60%, the door plank porosities of the valves are decreased along with increase of the distances between the valves and the air source, and the lowest door plank porosity is 20%.

The invention discloses a lathe tool damping device, and belongs to the technical field of mechanical equipment. The lathe tool damping device comprises a tool bar and a tool bar mounting seat; one end of the tool bar mounting seat is provided with a mounting groove for mounting the tool bar, and an opening of the mounting groove is provided with a fixing part for fixing the tool bar; the tail part of the tool bar is fixed in the mounting groove, a tool bar extension section is fixedly arranged at the rear end of the tool bar, a movable gap is formed between the tool bar extension section and the inner wall of the mounting groove, and the tool bar extension section is connected with a swing damping device; and the swing damping device comprises a swing rod, a connecting rod, an n-shaped supporting frame, a friction roller and an arc-shaped damping face. According to the device, the influence of vibration of a lathe on the tool bar can be reduced, vibration of the tool bar can be damped at the same time, the damping effect is better, and thus the influence of vibration on processing of the tool bar is reduced, and the processing precision can be effectively guaranteed.

The invention discloses a segmentation type multi-stage centrifugal pump. The segmentation type multi-stage centrifugal pump comprises a sucking section, a first-stage impeller, impeller guide blades, a middle section, a second-stage impeller, a discharging section, a pump shaft, a shaft sleeve, an impeller spacer ring, a sliding bearing connected to the outer side of the shaft sleeve in a sleeving mode, a rolling bearing, an elastic connector connected with the pump shaft and an external prime mover driving the pump shaft to rate through the elastic connector. A plurality of spiral grooves are formed in the inner wall of the sliding bearing; the impellers are assembled on the pump shaft in a key-connection mode; the impeller guide blades are assembled in the middle section. Liquid is pressurized through the impellers and collected through the impeller guide blades, the flow speed is lowered, and the liquid is discharged through the discharging section and fed into a pipeline system. The spiral grooves in the inner wall of the sliding bearing increase the circulation amount of fluid and guarantee good lubrication of the sliding bearing, and therefore the friction power consumption between the shaft sleeve and the sliding bearing is lowered, and the mechanical efficiency of the centrifugal pump is improved. The heat caused by friction between the sliding bearing and the shaft sleeve is taken away in time, the service life of the sliding bearing is prolonged, and safe and reliable operation of the centrifugal pump is guaranteed.

The invention relates to the field of papermaking equipment, in particular to wrinkling processing equipment for producing masking base paper. The equipment comprises a first drying cylinder, a second drying cylinder, a winding roller and a wrinkling scraper assembly; the wrinkling scraper assembly comprises a scraper clamp, at least two blades, and a cutter pushing plate; the scraper clamp is arranged at the bottom of the water surface center line of the first drying cylinder in the axial direction and close to one side of the second drying cylinder, a clamping groove is formed in the side, facing the outer circumferential face of the first drying cylinder, of the scraper clamp, and the clamping groove extends in the axial direction of the first drying cylinder; the blades are arranged in the clamping groove, the blades extend in the axial direction of the first drying cylinder, and tool bits of the blades in the clamping groove abut against the inner ends of the adjacent blades close to the openings of the clamping groove; and the cutter pushing plate is arranged at the bottom end of the clamping groove, the cutter pushing plate abuts against the inner ends of the blades at the clamping bottom, and the cutter pushing plate is used for pushing the blades to the outside of the clamping groove. According to the wrinkling scraper assembly capable of automatically replacing the blade, the problem that the production efficiency is affected due to the fact that the blade is replaced after shutdown can be avoided.

The invention provides silk screen printing equipment suitable for batch processing and realizing even ink distribution. The silk screen printing equipment comprises a bottom plate, a silk screen fixing mechanism, an ink spraying mechanism and pneumatic guide rails, wherein the silk screen fixing mechanism is fixedly installed on the bottom plate; the ink spraying mechanism comprises a sliding platform, an ink scraping plate, a connecting plate, linear bearings, a reset spring, an ejector rod, a cam and a motor; the sliding platform is installed on the pneumatic guide rails, the ink scraping plate is movably installed at the bottom of the sliding platform, one end of the connecting plate is fixedly connected with the ink scraping plate, and the other end of the connecting plate is installed on the linear bearings; and the connecting plate is sleeved with the reset spring, the ejector rod is installed on the connecting plate through bolts, the motor is mounted on the sliding platform, the power output end of the motor is fixedly sleeved with the cam, and the cam makes contact with the ejector rod. The ink scraping plate is pushed by the cam to reciprocate, the ink scraping plate canmove on a silk screen during ink scraping so that the ink can be evenly sprayed to printing materials, the ink scraping plate can move through clamping plates in the silk screen fixing mechanism, andthe silk screen is replaced more conveniently.

The invention discloses a sectional type multiple-stage centrifugal pump provided with an adjustable vane apparatus. The sectional type multiple-stage centrifugal pump comprises a suction section, a first-stage impeller, the adjustable vane apparatus, a middle section, a second-stage impeller, a discharging section, a pump shaft, a shaft sleeve, an impeller spacer ring, a sliding bearing, a rolling bearing, an elastic connector and an external prime motor; the impellers are assembled on the pump shaft in a key connection manner; and the adjustable vane apparatus is assembled in the middle section, liquid pressurized by the impellers is collected through the adjustable vane apparatus, the flow speed of the liquid is decreased, and the liquid is discharged and fed into a pipe system. By means of the adjustable vane apparatus, the angle of guide vanes is adjusted according to the pressure at an outlet of the water pump, so that the water pump works at efficiency optimizing working points at any working conditions, partial loads of the water pump and the hydraulic efficiency under the overload working condition are improved, the running efficiency of a water pump system, in particular to a frequency conversion or flow changing water pump system is improved, and energy consumption of the water pump system is saved.

The invention discloses an automatic industrial cascaded multi-node control system of a non-full-code parallel bus. The automatic industrial cascaded multi-node control system comprises node circuits which are distributed at various automatic industrial physical locations, the node circuits are successively cascaded by virtue of a parallel bus, addresses of all node circuits are numbered by a principal computer in a drive program by virtue of a non-full-code list, when the corresponding node circuit is required to work, a non-full code is extracted by virtue of a sequence number and outputted to a parallel bus controller by virtue of an output interface of the principal computer, and the control parallel bus drives the corresponding node circuit to work. The automatic industrial cascaded multi-node control system can adopt any parallel bus in any form and performs the transmission by virtue of a parallel bus non-full-code way; each node circuit can be directly simply controlled logically by virtue of the bus, so that no intelligent chip is needed, a peripheral circuit and a node circuit are simple to realize, the price is low, and fewer elements are needed; and a PCB is small in size, thereby well adapting to the installation at physical location and not being limited by the size of the physical location and a distance between the physical locations.

The invention discloses a lock body square strip base directionless structure which comprises a lock body shell, a pulling sheet, a transmission mechanism and a dead bolt assembly. The dead bolt assembly can be positioned to the lock body shell in a sliding manner along a straight line, one end of the dead bolt assembly can extend out or retract back into the side wall of the lock body shell, the pulling sheet can be rotationally positioned on the lock body shell and is fixedly connected with a square strip base in a lock body in a coaxial manner, and the pulling sheet rotates positively and negatively by a set angle so that the dead bolt assembly can slide towards the inner side of the lock body shell by a set distance through the transmission mechanism. When the lock body square strip base directionless structure is in the initial state, the dead bolt assembly keeps the state of extending out of the outer side of the lock body, when the pulling sheet is rotated, the dead bolt assembly can be driven to retract back to the interior of the lock body through the transmission mechanism no matter which direction the pulling sheet is rotated to, the structure can be suitable for installation of the lock body on a door opened to any direction, the application scope is wide, and trouble for door body installation when the door opening direction is changed can be avoided.

The invention relates to a supporting device capable of achieving rapid and continuous change of an angle and bearing a large load. The supporting device capable of achieving rapid and continuous change of the angle and bearing the large load is composed of an upper platform and a lower platform, wherein the upper platform is movable and moves along with an engine test article during a test, the lower platform is fixed and is connected with an installation base, the upper platform and the lower platform are connected through a rotary shaft device, arc-shaped guide rail devices and a driving device, the rotary shaft device is installed between one side of the upper platform and one side of the lower platform, the driving device is installed between the other side of the upper platform and the other side of the lower platform, and the upper platform rotates relative to the lower platform around the rotary shaft; an angle sensor is installed at one end of the rotary shaft so that angle detection can be achieved easily; the arc-shaped guide rail devices are installed on the two sides of the upper platform and the lower platform and can limit the moving trajectory of the upper platform and bear the load in the horizontal direction. The driving device is formed by combining two electric cylinders and a high-power servo motor, large pushing force can be provided, and rapid and accurate positioning of an angle can be achieved.

The invention discloses a fast positioning system. The fast positioning system comprises a fast positioning device and a positioning control module, and is characterized in that the fast positioning device is placed on a positioning object, the positioning control module is installed on an intelligent terminal and wirelessly connected with the fast positioning device; the fast positioning device comprises a power supply, a wireless communicator, a logic processor and an alarm device; the power supply is electrically connected with the wireless communicator, the logic processor and the alarm device and provides energy support for the wireless communicator, the logic processor and the alarm device; and the logic processor is connected with the wireless communicator and the alarm device, and the logic processor controls the wireless communicator to transmit and receive data and controls the alarm device to give out an alarm. The device can be installed or placed in an objected used by people in production and life, and the device is remotely operated so as to be enabled to prompt the position of the object via information such as sound, light or vibration.

The invention discloses a power take-off and power generation system for carrying tools such as road, rail and overwater tools. The power take-off and power generation system comprises an overall system, wherein the overall system is composed of one or more permanent magnet motors, zero or more storage batteries and a multi-input power converter; and the multi-input power converter is composed ofa three-stage circuit topology, a preceding-stage single-path input or multi-path input DC-DC boost / buck conversion circuit, an intermediate-stage power collection bus capacitor and a backward-stage DC-AC conversion circuit. The power take-off and power generation system has higher efficiency, reduces the influence on the driving force of a carrying tool to the maximum extent, can control the input power of one or more generators with different voltages, frequencies, phases and powers which are simultaneously accessed in real time so as to meet the requirement that primary power supplies withdifferent output characteristics are controlled to operate in parallel, can be connected with one or more storage battery packs at the same time, can control the power flow in real time according to the output power condition of the generator, achieves the energy storage and power compensation functions, adopts three-phase four-bridge-arm topological output, and has great phase shift load capacityand reactive power load capacity.

A steam box and microwave machine integrated machine, comprising a box body (1), a steam generation system, a microwave generation system, an oven door component (4), and a control system connected with the steam generation system and the microwave generation system. The steam generation system comprises a steam generator (2) used for generating steam; the steam generator (2) is provided at one side of the top of a cooking chamber (11); the microwave generation system comprises a magnetron tube (3-5), a power source component, and a microwave guide device (1-4); the power source component is provided at another side of the top of the cooking chamber (11). The steam box and microwave oven integrated machine has a reasonable structure, and can avoid mutual interference between the steam generation system and the microwave generation system.

The invention discloses a thermal type vortex shedding flow metering device, a flowmeter and a flow measurement method of the vortex shedding flow metering device. The vortex shedding flow metering device includes a measuring pipeline and further includes a vortex generator used for making fluid generate regular vortexes. The generator is located in the measuring pipeline, a fluid channel used forthe fluid passing through is arranged on the vortex generator, the fluid channel is internally provided with a sensor used for detecting the vortex frequency, and the sensor refers to a thermoelectric sensor. The invention further discloses the vortex shedding flowmeter provided with the thermal type vortex shedding flow metering device. The invention provides the flow metering device high in anti-interference ability and the flow measurement method of the flow metering device. By detecting regular temperature variation caused by vortex signals, temperature and pressure modification is not needed when the flowmeter is installed, the installation time is shortened, and the flowmeter is suitable for more installation sites.

The invention discloses a knock-resistant testing device and an experimental method thereof. The device comprises a simulated cabin, a cabin end cover and a testing system; a clamping device is arranged on the cabin end cover, a sample is fixed on the cabin end cover through the clamping device, a mounting hole for mounting a sensor bracket is formed on the bottom of the simulated cabin; the sensor bracket is fixed on the bottom of the simulated cabin through a first nut; a sensor base is arranged on the sensor bracket, and the sensor is arranged on the sensor base. By integrating with multiple advanced testing technologies, the knock-resistant testing device comprehensively evaluate the knock-resistant effect by adopting a joint diagnosis method, and has the advantages of being simple inoperation and good in reliability.

The invention discloses a pre-tightening force adjustable nut assembling and disassembling intelligent device. The pre-tightening force adjustable nut assembling and disassembling intelligent device comprises a self-propelled rail vehicle, a four-nut assembling and disassembling multifunctional device, a rechargeable battery pack and inverter and a hydraulic system and control system box; the rechargeable battery pack and inverter provides power for an oil pump and a control system; an oil tank, the oil pump, a hydraulic control system and an automatic control system are arranged in the hydraulic system and control system box; the vehicle rail bears the four-nut assembling and disassembling multifunctional device to rapidly arrive and depart a sleeper changing site; the four-nut assemblingand disassembling multifunctional device is automatically and rapidly aligned with a working position; pre-tightening forces of four nuts are consistent so that the four-nut assembling and disassembling multifunctional device can adapt to mounting of the nuts with different pre-tightening force requirements; collapsing of stone ballasts at the end of a sleeper can be effectively stopped to provide guarantee for rapidly changing a new sleeper; the rail vehicle can self-move on a railway track in a round trip so as to avoid influence on the running of a train; when the rail vehicle gets on andoff a track, the gravity center of the rail vehicle does not rise and the rail vehicle does not bump; the operation is convenient; intelligent control is easy to realize; and the working efficiency inassembling and disassembling the nuts and stopping collapsing of the stone ballasts at the end of the sleeper is high.

The invention discloses vertical type paint spraying equipment. The equipment comprises trundle structures, a moving base, a vertical type support and a spraying gun, the trundle structures are arranged on the four corners of the bottom of the moving base, and each comprise an axle, a radial ball bearing, a hub and a trundle frame, the axles are fixedly sleeved with the radial ball bearings, the radial ball bearings are fixedly provided with the hubs, the hubs are fixedly sleeved with tires of rubber materials, the two ends of the axles are fixed to the trundle frames through screws, a gearboxis mounted on a transmission fixing base, the transmission fixing base is fixedly mounted on the bottom of a power box frame, partial weight of a transmission structure can be reduced, the stabilityof up and down reciprocated operation of the spraying gun can be increased, shaking of the spraying gun in the running process can be effectively reduced, and the spraying quality can be effectively ensured.

The invention discloses a prefabricated wallboard mounting device, and relates to the technical field of building construction, the mounting device comprises a movable rack, a support rod frame and a bearing plate; the bearing plate is provided with a plurality of clamping pieces used for clamping the side edge of the prefabricated wallboard, the end face of the bearing plate is provided with a suction cup piece, each clamping piece comprises a front end clamping plate, an abutting piece and an inclined rib plate, and the front end clamping plate is arranged on the front end face of the bearing plate and fixedly connected with one end of the abutting piece; a connecting sliding seat sliding on the inclined rib plate is arranged on the inclined surface of the inclined rib plate; the suction cup piece is a mechanical suction cup and is connected with the connecting sliding base in one clamping piece through a transmission piece. When the connecting sliding seat moves on the inclined rib plate, the suction part of the suction cup part can be pulled through the transmission part and sucked to the back face of the prefabricated wallboard. The device is simple in structure, can adapt to installation of prefabricated wallboards with different thicknesses, is stable in installation, avoids front-back vibration, facilitates subsequent wallboard fixing operation, and is high in practicability.

The invention discloses a sectional type electric logistics vehicle frame structure capable of realizing rapid replacing of power batteries. The structure includes a front section longitudinal beam, amiddle section upper longitudinal beam, a middle section lower longitudinal beam and a rear section longitudinal beam; the front section longitudinal beam and the rear section longitudinal beam are provided with leaf spring installation support seats; the seats are provided with crossbeams to connect with the left and right longitudinal beams; the front ends and rear ends of the middle section upper longitudinal beam and middle section lower longitudinal beam form a closed frame structure respectively through the connection of the crossbeams, inclined pull rods and vertical columns; the lowerpart of a battery pack installation frame structure is provided with slideways; and the middle section battery pack installation frame structure is connected to the frame front section longitudinal beam and the frame rear section longitudinal beam through connecting pieces, so that the sectional type frame structure can be formed. The sectional type frame structure can be formed through the framefront section, middle section and rear section, so that the installation of parts such as a vehicle suspension system and the battery packs can be realized; and the frame middle section battery packinstallation frame structure can be suitable for the installation of the battery packs with different specifications, the arrangement space of power batteries can be increased, and the rapid replacingof the power batteries can be realized.