49results about How to "Avoid turning" patented technology

The invention relates to the technical field of gold bonding wires, in particular to a gold bonding wire welding method and system based on artificial intelligence optimization. S2, constructing a grid map, and generating an initial optimal path by using an RRT algorithm; optimizing the initial optimal path by using a DWA algorithm and a bidirectional Theta * algorithm to obtain an optimal welding path; s3, a prediction model is constructed based on a machine learning algorithm, a prediction result is output, and then the optimal welding path is adjusted; s4, the workpiece is welded according to the optimal path; and S5, acquiring a workpiece image of the gold bonding wire finished product to judge whether the appearance of the gold bonding wire finished product meets a preset standard or not. According to the method, the initial optimal path generated by the RRT algorithm is optimized by combining the DWA algorithm with the bidirectional Theta * algorithm, so that the welding path planning efficiency is improved, the gold bonding wire welding safety is ensured, and the welding production efficiency and the production quality are remarkably improved.

The invention provides a transverse control method and device for a vehicle, electronic equipment and a storage medium, and the method comprises the steps: recognizing a lane line of the driving direction of the vehicle, at least under the condition that a plurality of lane lines exist in a recognition result, determining two target lane lines of a target lane where the vehicle is located from the plurality of lane lines, and determining a first included angle and a second included angle respectively formed by the driving direction and the two target lane lines. And under the condition that the first included angle and the second included angle meet the relative size relation, transverse control is conducted on the vehicle based on the two target lane lines. And under the condition that the first included angle and the second included angle do not meet the relative size relationship, performing transverse control on the vehicle based on the target lane line corresponding to the relatively small included angle in the first included angle and the second included angle.

The invention discloses a full-automatic fertilization device and method for agricultural machinery, and relates to the technical field of automatic fertilization. A motor is arranged at the top of the U-shaped fixing plate; a mixing barrel is arranged at the top of the base and is positioned below the U-shaped fixing plate; a water injection pipe is arranged on the right side of the top of the mixing barrel; a material injection pipe is arranged on the left side of the top of the mixing barrel; the top of the stirring rod penetrates and is fixedly installed at the bottom of the motor output end. The spraying assembly is driven by the electric sliding rail to move up and down in a reciprocating mode to conduct uniform fertilization and spraying on vegetation at different heights, the situation that fertilizer content received by the vegetation at different heights is difficult to balance is prevented, and meanwhile the situation that sufficient nutrients are difficult to provide for the vegetation due to too high evaporation speed of fertilizer mixed liquid in a summer high-temperature environment is avoided; and the survival rate of vegetation is ensured.

The utility model relates to lighting lamp technical field, concretely is a kind of wall washer with dual function, including luminaire body, connecting column and connecting assembly, the quantity of connecting assembly is at least two, two connecting assemblies are slidably installed in the top of luminaire body, the top of connecting assembly is equipped with the connecting rod for connecting assembly and luminaire body fixed connection in use state and make the installation of luminaire body, connecting column is set in the top side of connecting rod, the outside of connecting column is equipped with the mounting plate for supporting and rotating limiting of connecting column to connecting column. The utility model is tightened in the top of connecting assembly by connecting rod, connecting assembly is clamped and fixed on luminaire body, and connecting column and mounting plate are connected by driving connecting column by luminaire body, and it is supported and limited to connecting column, simultaneously, by the cooperation of clamping groove and protruding block, effectively limit connecting column to rotate in gourd hole, to avoid the situation that connecting column rotates after luminaire body is installed.

A vehicle suspension system includes a pair of torsion spring shafts, a first torsion spring shaft end of each of the pair of torsion spring shafts being connected to a left wheel and a right wheel of a vehicle, respectively, and a second torsion spring shaft end of each of the pair of torsion spring shafts, second torsion spring shaft ends of each of the pair of torsion spring shafts extend in the vehicle width direction so as to symmetrically face each other; and a connecting bracket fixedly connecting the mutually facing second torsion spring shaft ends of the pair of torsion spring shafts.

The utility model discloses a food preservation box which comprises a heat preservation box cover and a heat preservation box body, a hand pressure inflator pump is fixed to one side of the top end of the heat preservation box cover, an exhaust valve is fixed to the end, away from the hand pressure inflator pump, of the top end of the heat preservation box cover, a telescopic air bag is fixed to the bottom wall of the heat preservation box cover, and a pressing plate is fixed to the bottom end of the telescopic air bag. A foam layer is arranged at the bottom end of the pressing plate, the foam layer and the pressing plate are fixed in a bonding mode, the heat preservation box body is arranged at the bottom end of the heat preservation box cover, and a test tube rack is fixed to the top end of the inner wall of the heat preservation box body. Compared with an existing food preservation box, the food preservation box is provided with the extrusion mechanism, sample test tubes can be pressed, so that the test tubes are prevented from being crashed due to bumping and jumping in the transportation and movement process, the safety of the device is improved, meanwhile, the device is provided with the ice bag cooling mechanism, the storage temperature of the device can be effectively reduced, and the storage efficiency is improved. The preservation time of the food is prolonged, and the practicability of the device is improved.

The invention discloses a full-trailer with active rear-axle steering and an operation method thereof, comprising a cargo flatbed, a front axle, a rear axle and a reverse auxiliary locking device, wherein the front axle is designed as a turntable-type steering axle, and the rear axle is designed as a hydraulic suspension and a one-line two-axle form, both the front axle and the rear axle of the full-trailer can be steered, and the reverse auxiliary locking device is used to lock or unlock the steering function of the front axle and the rear axle, when the vehicle is towing normally, the front axle is unlocked and the rear axle is locked, and the trailer can be steered like a normal vehicle; when reverse auxiliary steering or alignment is performed, the rear axle is unlocked and the front axle is locked, and active steering is achieved by controlling the hydraulic steering cylinder to push the rear axle, and the reverse driving direction is controlled, thereby avoiding steering control by the tractor, reducing the steering difficulty, and improving the reverse auxiliary steering control accuracy.

The utility model discloses a hyaluronic acid viscosity adjusting device, which relates to the field of hyaluronic acid viscosity adjustment and comprises a cover body, the upper end of the cover body is fixedly connected with a stirring component, a thickening agent tank and a diluent tank, and the stirring component, the thickening agent tank and the diluent tank are fixedly connected to the upper end of the cover body. Feeding pipes are fixedly connected to the lower ends of the thickening agent tank and the diluent tank, the lower ends of the feeding pipes penetrate through the cover body and are fixedly connected with discharging pipes, electromagnetic valves are arranged on the surfaces of the feeding pipes, and a detection assembly is fixedly connected to the upper end of the cover body. By adopting the structure, the viscosity sensor is fixedly connected with the mounting plate, so that the viscosity sensor can detect the viscosity of hyaluronic acid under the movement of the mounting plate, and the hyaluronic acid can also be detected when the hyaluronic acid is stirred in a lead screw connection mode; and thus, the efficiency of adjusting the viscosity of hyaluronic acid can be improved.

The application relates to a kind of unmanned aerial vehicle service network automatic layout method for complex urban low-altitude environment. Firstly, the urban low-altitude environment is spatially gridded and the height of the obstacle is aggregated. Secondly, by introducing the "detection + gentle climb" strategy and the continuous heading adjustment mechanism, the improved A* algorithm is used to reconstruct the cost function with real physical flight time, and to calculate the shortest safe flight time matrix between each grid node. Finally, a P-median location model is constructed to minimize the weighted total flight time of residents, and the Lagrangian relaxation is combined with the Volume algorithm and local search for efficient solution. The application can quickly solve the optimal layout of unmanned aerial vehicle take-off and landing points in large-scale urban central city without relying on high-performance hardware, and has the advantages of high path smoothness, accurate time estimation, high location efficiency and strong engineering adaptability, and is suitable for the planning and construction of unmanned aerial vehicle service network for ultra-large city low-altitude logistics and inspection.

The utility model discloses a garden greening planting proportioning soil stirring tool which comprises a box body and a support, a feeding assembly is installed on the box body, the feeding assembly comprises a hopper and a discharging valve, a discharging assembly is installed at the bottom of the box body, the discharging assembly comprises an outlet pipe and a valve, a crushing assembly is installed at the top of the box body, and the crushing assembly is connected with the discharging pipe. The crushing assembly comprises a first motor and a heavy hammer, a stirring assembly is installed at the bottom of the box body and comprises a second motor and a spiral plate, the stirring tool for the landscaping planting proportioning soil can crush raw materials, it is avoided that large soil blocks exist in the landscaping planting proportioning soil, the mixing uniformity can be improved, and the mixing efficiency is improved. Plant fibers are cut up through a cutter, the crushing operation of a heavy hammer is guaranteed, the situation that a supporting sleeve cannot rotate due to the fact that the torque of the supporting sleeve and a sliding rod is too long is avoided, safety of the supporting sleeve and a second motor is guaranteed, and the device is suitable for stirring garden greening planting matching soil.

The invention relates to the technical field of wood mirror frame processing, and provides wood mirror frame continuous processing equipment which comprises a rack, a feeding mechanism is arranged at one end of the top of the rack, a cutting mechanism is arranged in the middle of the rack and comprises a first mounting frame fixedly connected to the top of the rack, and first air cylinders are fixedly connected to the two ends of the top of the first mounting frame; the output ends of the two first air cylinders are fixedly connected with the same movable plate, a first motor is fixedly installed at the bottom of the movable plate, an output shaft of the first motor is fixedly connected with a cutting knife wheel, and a knife groove is formed in the top wall of the rack. A rotating disc is rotationally connected to the rack, a driving assembly matched with vertical sliding of the movable plate to drive the rotating disc to rotate intermittently is arranged at the bottom of the rack, a grinding mechanism is arranged at one end of the rotating disc, and a conveying belt is arranged at the discharging end of the grinding mechanism. Through the innovative design, the efficiency, precision, automation and adaptability are remarkably improved.

The invention relates to the technical field of corrugated carton conveying, in particular to a corrugated carton conveying, adjusting and steering device which comprises a steering plate in an arc shape. The side walls of the two conveying frames are attached to the outer side wall of the steering plate, a first conveying belt is installed in one conveying frame through a roller, a second conveying belt is installed in the other conveying frame through a roller, and the first conveying belt and the second conveying belt convey corrugated cartons; and the steering mechanism comprises a first rod rotationally connected to the upper end of the steering plate. After the bevel gear is engaged to be separated on the arc-shaped toothed plate, the bevel gear just rotates for half a circle, the U-shaped plate rotates for half a circle, and the lower surface of the U-shaped plate is attached to the upper surface of the steering plate, so that the corrugated carton is turned over, subsequent processing is facilitated, and the problems that in the prior art, the corrugated carton cannot be turned over in the steering process, and the steering efficiency is high are solved. Therefore, the subsequent turn-over treatment of special equipment is needed.

The utility model discloses a mixer truck tank body driving device with a safety device, which comprises a motor, a speed reducer and a brake, the brake comprises a shell, a brake shaft, a brake piston and an electromagnetic coil, wherein the brake shaft, the brake piston and the electromagnetic coil are arranged in the shell. The brake shaft is rotatably arranged in the shell, one end of the brake shaft is provided with a gear, and the gear is meshed with a driven gear of the speed reducer; a brake friction disc is arranged at the other end of the brake shaft; the brake piston is movably arranged in the shell, one side of the brake piston is matched with the brake friction disc, and a plurality of brake elastic assemblies and electromagnetic coils are arranged between the other side of the brake piston and the shell. According to the mixer truck tank body driving device with the safety device, under the condition that a truck is powered off, the safety device can apply braking force to the mixer truck tank body, the mixer truck tank body is prevented from rotating or swinging under the action of external force, and the safety of the mixer truck tank body driving device is improved.

The invention discloses an anti-rust fastening connecting pin suitable for hinging. The anti-rust fastening connecting pin is composed of a pin, a wear-resistant sleeve, a limiting gasket and a lantern ring. After the pin rod of the pin is sequentially sleeved with the wear-resistant sleeve and the limiting gasket, the pin rod is riveted and fixed with the lantern ring; the two ends of the wear-resistant sleeve are embedded into the pin cap and the limiting gasket respectively to be in clearance fit connection with the pin cap. The problem that rotation cannot be achieved due to the fact that an existing railway wagon round pin and a lever mounting hole are corroded seriously can be effectively solved, and even if the abrasion-resistant sleeve and the lever mounting hole are corroded and cannot rotate, the pin rod of the pin and the abrasion-resistant sleeve can still keep a good rotation function. By means of the ring groove rivet connection principle, the situation that the wear-resisting sleeve is disengaged from the limiting gasket due to the fact that the limiting gasket retreats due to connection looseness is prevented, a relatively good sealing environment is kept between the whole pin rod and the wear-resisting sleeve, the outer surface of the pin rod and the inner surface of the wear-resisting sleeve are prevented from being rusted, and therefore normal use of the rotation function is guaranteed.

The anti-rotation device for the servo electric cylinder comprises a servo electric cylinder body, a rectangular fixing hoop is fixedly arranged on the surface of the servo electric cylinder body, a connecting assembly is arranged on the left side of the rectangular fixing hoop, and a connecting sleeve is arranged on the left side of the rectangular fixing hoop through the connecting assembly. A lubricating groove is formed in the connecting sleeve, a filling hole is formed in the lubricating groove, a plugging assembly is arranged in the filling hole, and a sliding rod is arranged in the connecting sleeve in a sliding mode. Through arrangement of a rectangular fixing hoop, a connecting assembly, a connecting sleeve, a lubricating groove, a filling hole, a sliding rod, a limiting plate, a mounting plate and a circular fixing hoop, the output end of the servo electric cylinder body can be conveniently limited, so that the output end of the servo electric cylinder body can only move in the vertical direction, the situation that the output end of the servo electric cylinder body rotates is avoided, and the service life of the servo electric cylinder body is prolonged. And the situation that the internal temperature of the servo electric cylinder body rises due to the fact that the anti-rotation device is arranged in the servo electric cylinder body is avoided.

The invention relates to the field of clutch center sleeve machining, in particular to automatic machining equipment for a clutch center sleeve. Comprising a mounting base, a first vertical plate is mounted at the edge of the top of the mounting base, a first sliding groove is formed in the top of the mounting base, a first lead screw is arranged in the first sliding groove, a first motor is arranged at one end of the mounting base, and a first sliding block is in threaded connection with the first lead screw; and a first electric push rod is mounted at the top of the first sliding block, a mounting plate is mounted at the output end of the first electric push rod, a second vertical plate is mounted at the edge of the top of the mounting plate, a plurality of sets of second motors are vertically mounted on the side wall, close to the first vertical plate, of the second vertical plate at equal intervals, and the number of the second motors is six. According to the embodiment of the invention, the selection, positioning and replacement of the cutter are completed through the accurate control of the power element, so that the operation difficulty is reduced, and the working effect of the machining equipment is improved at the same time.

The utility model relates to the technical field of agricultural planting, and disclose a kind of water and fertilizer integration irrigation device for Xanthoceras sorbifolia bunge planting, the inside of the box is provided with rotating rod, the outer surface of rotating rod is coaxially spaced apart with stirring rod, one end of stirring rod is fixedly connected with the outer surface of rotating rod, the other end of stirring rod extends to the direction away from rotating rod axle center, the inside of rotating rod movably is sleeved with the adjusting rod that is penetrated in the both ends of rotating rod, the lower end of adjusting rod is fixedly connected with obturator, by the cooperation between the structure such as operation round plate, adjusting screw, rectangular sleeve, adjusting rod and obturator, the flow of discharge port is adjusted, to effectively avoid the excessive extrusion of hose, avoid the situation that hose is damaged, avoid the situation that material leaks, improve the security and service life of device, simple operation, higher practicality.

The utility model relates to the technical field of grinding machines, and discloses an engine valve forming grinding machine which is characterized in that a threaded groove is formed in the outer wall of one side of a rotating shaft, a conduction block is in threaded connection with the outer wall of one end of the rotating shaft, a refrigerator is installed on the upper surface of the conduction block, and two fixing seats are welded to the upper surface of a bottom plate; limiting blocks are installed on the upper surfaces of the two fixing seats, limiting grooves and clamping grooves are formed in the outer walls of the limiting blocks correspondingly, and the refrigerators are slidably connected to the inner walls of the limiting grooves. Through the arrangement of the refrigerator and the conduction block, the refrigerator refrigerates the conduction block, the conduction block transmits cold air flow to the rotating shaft through the threaded groove, the air flow enters the dustproof shell and the sealing cover through the rotating shaft, and the cold air flow flows to the brake assembly to cool the joint of the brake assembly and the rotating shaft. And the refrigerator is limited through the limiting block, so that the refrigerator, the conduction block and the rotating shaft are located on the same horizontal line and cooperatively operate.

The utility model discloses a venturi with an adjustable nozzle, which belongs to the technical field of venturi and comprises a receiving chamber, and a nozzle body is arranged in the receiving chamber. Mixed gas is mixed at the throat pipe and then discharged out of equipment, the ejector pin can rotate by rotating the rotating ring, relative displacement can be generated between the ejector pin and the inner wall of the nozzle through rotation of the ejector pin, different injection effects are achieved by adjusting the distance between the nozzle body and the throat pipe, and the inner wall of the connecting groove is matched for limiting the connecting block, so that the injection efficiency is improved. The nozzle body can be prevented from rotating along with rotation of the ejector pin, the clamping ring can limit rotation of the ejector pin, it can be guaranteed that the ejector pin moves linearly, when equipment is installed, the bolt is rotated into the fixing opening and the installation opening, and therefore the effective area of the nozzle can be adjusted by increasing the ejector pin, and the service life of the nozzle is prolonged. Different supersonic speeds are generated after passing through the nozzle, and different injection effects are achieved through changes of the pressure of the receiving chamber.

The present invention discloses a grinding device with a function of removing rust from metal pipe ports, and relates to the field of mechanical processing technology. The grinding device with a function of removing rust from metal pipe ports comprises a base, a movable plate is slidably installed on the top of the base, a pushing device is fixedly installed on the top of the base, the output end of the pushing device is fixedly connected to the movable plate, a connecting frame is fixedly installed on the surface of the movable plate, and a No. 1 grinding plate is slidably sleeved on the top of the connecting frame. When the grinding device with a function of removing rust from metal pipe ports places the pipe inside the rotating plate, the pipe can be restricted on the rotating plate by the sleeve plate, the movable plate can be driven to move by the pushing device, the inner and outer walls of the pipe are between the No. 1 grinding plate and the No. 2 grinding plate, the side of the pipe will contact the friction block, and the rotating plate drives the pipe to rotate so that the No. 1 grinding plate, the No. 2 grinding plate and the friction block can remove rust from the pipe port.

The present invention relates to a hinge device, a hinge mechanism and a mobile terminal, wherein the hinge device has a mounting base, a flip assembly arranged on both sides of the mounting base, a synchronous gear set for the flip assembly to rotate synchronously, and a damping assembly; the flip assembly includes a driving plate, a supporting plate, a first rotating plate and a second rotating plate; the lower end of the first rotating plate is rotationally connected with the mounting base and is used to drive the gear on the corresponding side of the synchronous gear set, and the upper end of the first rotating plate forms a sliding compensation fit with the driving plate and the supporting plate respectively; the lower end of the second rotating plate forms a virtual axis rotation connection with the mounting base, and the upper end of the second rotating plate forms a rotation connection with the supporting plate; the supporting plate is rotationally connected with the driving plate; when the hinge device is closed, the relative supporting plates form a shape in which the upper end is close to the lower end and far away. The present invention can effectively reduce the width of the mounting base, thereby reducing the width of the hinge mounting seat on the hinge mechanism and the mobile terminal, providing favorable conditions for the thinning of the product.

The present invention relates to a hinge mechanism and a mobile terminal for a folding screen, which has a hinge mounting seat; a plurality of hinge devices are mounted on the hinge mounting seat along its extension direction; the hinge device includes a mounting base, and a left flip assembly and a right flip assembly that are rotatably arranged on the mounting base and form synchronous flipping through an even number of gear sets; the left flip assembly and the right flip assembly are both integrated with sliding compensation and damping rotation. The present invention has a simple structure, high functional integration, and can effectively save installation space; at the same time, it can not only provide a better support effect when the flexible screen is in an unfolded state, but also provide a holding space for the flipping part of the flexible screen after the flexible screen is folded, thereby reducing damage to the flexible screen.

The present invention discloses a detachable cotton sleeve assembly for a swimming pool cleaning machine, comprising a swimming pool cleaning machine frame, a cotton sleeve, a connecting plate, a detachable cover, a first guide member, a second guide member, a button and a compression spring. The swimming pool cleaning machine frame also comprises a first transmission shaft, a second transmission shaft, a shaft sleeve fixing cover and transmission parts. Compared with the prior art, the present invention has a simple structure and a reasonable design. The cotton sleeve can be disassembled and maintained without disassembling the transmission mechanism of the side cover, thereby simplifying after-sales maintenance and user use, and is worthy of promotion.

A limiting type lathe tool comprises a workbench, a flange plate clamping assembly is arranged on the workbench, the flange plate clamping assembly comprises two clamping plates with the distance capable of being adjusted, the limiting type lathe tool further comprises an adjusting assembly for driving the distance between the two clamping plates to be adjusted, the limiting type lathe tool further comprises a limiting assembly, and the limiting assembly comprises a limiting rod capable of limiting flange plate edge holes. The topmost end of the limiting rod is lower than the upper surface of the flange plate, and the supporting rods are used for supporting the flange plate and are installed on the workbench. The problem that rotation is prone to occurring in the flange plate tooling process at present is solved, meanwhile, damage to a grinding tool is avoided, the production cost of an enterprise is reduced, and the grinding efficiency is greatly improved.

The utility model provides a self-lubricating surge bin discharge port lead screw seat which comprises a base, a mounting groove is formed in the middle end of the base, a bearing is arranged in an inner cavity of the mounting groove, clamping grooves are formed in the front side and the rear side of the bearing respectively, insertion holes are formed in the left side and the right side of the bearing respectively, and the clamping grooves are matched with the insertion holes. Mounting mechanisms are arranged on the left side and the right side of the inner surface of the base, each mounting mechanism comprises a first cavity and a second cavity, the first cavities are formed in the left side and the right side of the inner surface of the base, the second cavities are formed in the front side and the rear side of the left side and the right side of the inner surface of the base, and sliding rods are fixedly mounted in inner cavities of the two first cavities; by arranging the mounting mechanism, the mounting mode is relatively flexible and simple, the outer ring can be effectively prevented from rotating when the bearing is mounted in the inner cavity of the mounting groove by fixing in an inserting mode, and compared with a welding mode, the convenience of mounting or dismounting the bearing by an operator can be effectively improved, and the working efficiency is improved. And the use of operators is facilitated.

The invention discloses a suspension device for an infant bounce trainer, and belongs to the technical field of bounce trainer suspension.The suspension device for the infant bounce trainer comprises a suspension chain, a height adjusting mechanism is installed at the joint of the suspension chain, and a first fixing seat is movably connected to the bottom of the suspension chain; an elastic adjusting mechanism is installed at the bottom of the first fixing base, and a fixing mechanism is installed at the bottom of the elastic adjusting mechanism. By designing the height adjusting mechanism, the elasticity adjusting mechanism and the fixing mechanism, when the infant bouncing device is used, adjustment can be conducted according to the height of an infant, steering of the suspension device can be avoided according to limitation, dizziness is prevented, adjustment can be conducted according to the weight of the infant, certain elastic potential energy is guaranteed, and the infant bouncing device is convenient to use. The height can be determined according to the heights of different babies, and the babies can be effectively prevented from steering during bounce training according to limiting of the suspension chain and the clamping column, so that collision is avoided.

This invention belongs to the field of machine tool processing technology, specifically a CNC machine tool workpiece clamping mechanism, including a main clamping shell and a pressure-applying component. The pressure-applying component clamps and secures a cylindrical part inserted into the axis of the main clamping shell. The pressure-applying component has an arc-shaped pressure plate, with a pressure sensor fixedly connected to the top of the inner cavity of the arc-shaped pressure plate, and a lower pressure inner shell slidably connected to the bottom of the inner cavity of the arc-shaped pressure plate via a thick spring band. During the turning process of cylindrical parts, if the clamping jaws are used directly to clamp and secure the cylindrical part, the outer wall of the shell will be concave, resulting in clamping marks. In severe cases, excessive deformation can lead to part scrap. Conversely, loose clamping jaws can prevent the cylindrical part from being clamped securely. Therefore, this device uses an inner support component inserted inside the part to cooperate with the external pressure-applying component, thereby ensuring that both the inner and outer sides of the cylindrical part are subjected to clamping force, preventing deformation of the cylindrical part due to external forces.

The utility model discloses an adjustable goods transportation fixing frame belongs to the technical field of logistics equipment, including the vertical telescopic subassembly of setting in the transport car top end, the movable plate of setting in the vertical telescopic subassembly inside, the ceiling subassembly of setting in the vertical telescopic subassembly top, be used for limiting the first limiting component of vertical telescopic subassembly telescopic in vertical, and be used for limiting the second limiting component of movable plate in horizontal direction and shift, vertical telescopic subassembly includes a plurality of limit board and is in mouth character shape, the innermost limit board fixed setting in transport car top end edge, and the adjacent limit board between sliding connection, movable plate and the inner wall between the innermost limit board sliding connection, ceiling subassembly includes setting in the awning cloth of the outermost limit board one side top, and the third limiting component of the awning cloth free end limit to vertical telescopic subassembly on. The utility model can according to the loading capacity of the flexible adjustment fixed frame goods in goods's height, improve the flexibility of device use.

The invention relates to the field of engineering measurement technology, and provides a guiding structure for surveying and mapping equipment to solve the problem that the existing device cannot be adapted to the horizontal extension of the surveying and mapping instrument and the extension distance is short due to design defects. The guiding structure comprises: a guiding frame; a sliding plate, the sliding plate can be slidably arranged on the guiding frame, the sliding plate comprises a first sliding plate and a second sliding plate; a tripod, the tripod is arranged below the first sliding plate; a rotating member, the first sliding plate and the tripod are connected through the rotating member; through the structural design of the guiding frame, the sliding plate and the rotating member in conjunction with the tripod, the device can be adapted to the horizontal extension of most surveying and mapping instruments on the market, and can achieve long-distance extension while ensuring the stability of the device by fixing the surveying and mapping instrument on the second sliding plate farther from the tripod, so as to ensure the accuracy of the measurement result.