A type of lifting tool for automobile manufacturing

Abstract

This invention discloses a lifting device for automobile manufacturing, relating to the field of automobile manufacturing technology. It includes: a lifting beam with multiple connecting frames fixedly connected to its bottom, the connecting frames being equidistantly arranged at the bottom of the beam, and a suspension assembly at the bottom of each connecting frame; through the arrangement of a turntable, gears and racks engage and gradually mesh, allowing the automobile chassis to rotate into a vertically upward state, thus facilitating the side mounting of components and assemblies onto the chassis, saving time and effort and improving automobile manufacturing efficiency; through the arrangement of racks, as the suspension rail drives the cantilever and other structures forward, gears intermittently mesh with racks, causing the automobile chassis between the rotating plate and the clamping plate to rotate intermittently in one direction. Depending on the different angles the automobile chassis rotates to, components and assemblies that are convenient to assemble at that angle are systematically mounted onto the chassis, saving time and effort.

Description

Technical Field

[0001] This invention relates to the field of automobile manufacturing technology, and more specifically, to a lifting device for automobile manufacturing. Background Technology

[0002] Lifting tools are mainly used for lifting and moving heavy objects, playing a key role in many stages of automobile manufacturing, such as the stamping and final assembly stages, where various types of lifting tools are needed to move and transport large parts.

[0003] One common type of lifting device used in existing automotive manufacturing technology involves clamping and lifting the chassis using a jig. The jig is controlled by cylinders to hold the chassis in place, and a crossbar is installed at the bottom of the jig to prevent it from falling. Therefore, due to the constraint of the crossbar, the chassis held by the jig can only be assembled horizontally for components and assemblies. This also makes it difficult for workers to assemble components and assemblies near the center of the car due to obstruction by the metal parts of the jig. A common solution is to use bolts to directly fix the chassis to a moving platform, allowing components and assemblies on the top or bottom of the chassis to be installed. However, this solution requires installing a large number of bolts during chassis installation, and after installing components and assemblies on one side of the chassis, all bolts must be removed, the chassis flipped over, and then bolted again, which is time-consuming, labor-intensive, and detrimental to the efficiency of automotive manufacturing.

[0004] To solve the above problems, a new design is needed that makes it easier to lift the car chassis. Summary of the Invention

[0005] To solve the above-mentioned technical problems, a lifting tool for automobile manufacturing is provided.

[0006] To achieve the above objectives, the present invention can be implemented using the following technical solutions:

[0007] The present invention provides a lifting device for automobile manufacturing, comprising: a lifting beam, wherein a plurality of connecting frames are fixedly connected to the bottom of the lifting beam, the connecting frames are equidistantly arranged at the bottom of the lifting beam, and a suspension assembly is provided at the bottom of the connecting frames;

[0008] The suspension assembly includes a suspension rail fixedly connected to the bottom of a connecting frame. A cantilever is slidably connected below the suspension rail. Four suspension cables are fixedly connected to the bottom of the cantilever. A hanger is fixedly connected to the bottom of the four suspension cables. The ends of the four suspension cables away from the cantilever are fixedly connected to the four corner points of the hanger. A U-shaped fixing frame is fixedly connected to the bottom of the hanger. Two rotating shafts are rotatably connected inside the fixing frame. The two rotating shafts are symmetrically arranged on the fixing frame. A turntable is fixedly connected to the side of the two rotating shafts that are close to each other. A vertical rotating rod is rotatably connected to the outer wall of the U-shaped sidewall of the fixing frame. A gear is fixedly connected to the top of the rotating rod. A rack is fixedly connected to the side of the connecting frame at both ends of the suspension beam. The rack is located away from the rack. A rack and pinion 2 is fixedly connected to one side of the first rotating rod. A worm gear is fixedly connected to the bottom end of the first rotating rod. A rotating wheel 1 is rotatably connected to the side of the fixed frame near the worm gear. A ratchet 1 is rotatably connected inside the rotating wheel 1. A worm gear is coaxially fixedly connected to the side of the ratchet 1 away from the rotating wheel 1. The worm gear meshes with the worm gear. A pawl 1 is rotatably connected inside the rotating wheel 1. A rotating rod 2 is rotatably connected inside the fixed frame. One end of the rotating rod 2 passes through the fixed frame. The end of the rotating rod 2 passing through the fixed frame is fixedly connected to the rotating wheel 1. Two sprockets 1 are fixedly connected to the surface of the rotating rod 2. Sprockets 2 are fixedly connected to the surfaces of the two rotating shafts. Chains are provided on the two sprockets 1 and the two sprockets 2. A placement frame is fixedly connected to the side of the two turntables away from the fixed frame.

[0009] Preferably, a torsion spring is provided at the connection between the first rotating wheel and the first pawl, and the first pawl forms a limiting engagement with the first ratchet through the torsion spring.

[0010] Preferably, rack one and rack two are the same size, and the gear meshes with rack one and rack two.

[0011] Preferably, a chain is fitted onto the two sprockets, sprocket one and sprocket two, and the sprockets one and sprocket two form a transmission connection through the chain.

[0012] Preferably, the placement rack is L-shaped.

[0013] Preferably, the inner bottom of the fixing frame is provided with a fixing assembly, which includes a pulley one fixedly connected coaxially with the worm gear. The pulley one is located on the side of the worm gear away from the fixing frame. A rotating rod three is provided directly below the pulley one. A pulley two is fixedly connected to the rotating rod three near the pulley one. The pulley one and pulley two are connected to each other by a belt. A rotating wheel two is rotatably connected to the side of the fixing frame near the pulley two. A ratchet two is rotatably connected inside the rotating wheel two. The rotating rod three is connected to the ratchet two near the fixing frame. A pawl two is rotatably connected to the inside of the rotating wheel two. A connecting rod is rotatably connected inside the fixing frame. One end of the connecting rod passes through the fixing frame, and the end of the connecting rod passing through the fixing frame is fixedly connected to the side of the rotating wheel two near the fixing frame. A rotating rod four is rotatably connected to the inner bottom of the fixing frame. The two ends of the rotating rod four... Each of the four rotating rods is fixedly connected to a reciprocating lead screw. One end of the rotating rod is fixedly connected to a connecting rod. The surfaces of the two reciprocating lead screws are threaded with movable seats. The tops of the two movable seats are fixedly connected to two uprights. The uprights are in pairs. The bottom of one set of uprights is set on the movable seat. The end of one set of uprights near the turntable is fixedly connected to an arc-shaped block. The two arc-shaped blocks are in pairs. A rotating ring is slidably connected to the inner arc surface of one set of arc-shaped blocks. Movable rings are fixedly connected to the inner arc surfaces of the two rotating rings. Two traction rods are fixedly connected to the inner arc surfaces of the two movable rings. The four traction rods are in pairs. The two sets of traction rods are symmetrically arranged in the two movable rings. A storage groove is opened in the middle of the two turntables. The end of one set of traction rods away from the movable ring is fixedly connected to a telescopic plate. The end of the telescopic plate away from the traction rod is inserted into the storage groove.

[0014] Preferably, a torsion spring is provided at the connection between the second pawl and the second ratchet, and the second pawl and the second ratchet form a limiting engagement through the second torsion spring.

[0015] Preferably, a groove is formed on the inner arc surface of the arc-shaped block, and the rotating ring forms a sliding fit with the arc-shaped block through the groove.

[0016] Preferably, the width of the storage slot is the same as that of the telescopic plate, and the telescopic plate and the storage slot form a sliding fit.

[0017] Preferably, a cylinder is fixedly installed on one side of the two turntables near the placement frame. The cylinder is located directly below the placement frame, and the movable shaft of the cylinder passes through the placement frame. A clamp is fixedly connected to the top of the movable shaft of the cylinder passing through the placement frame.

[0018] As described above, the features and advantages of the automobile manufacturing lifting device of the present invention are as follows:

[0019] With the turntable in place, once the two ends of the car chassis are fixed between the clamping plate and the rotating plate, the suspension rail drives the cantilever to move, causing the gear and rack to contact and gradually mesh, thereby driving the rotating rod to rotate. This causes the turntable to rotate the car chassis inside the clamping plate and the rotating plate, allowing the car chassis to rotate during the assembly process. This allows the car chassis to rotate into a vertically upward position, making it easy to install components and assemblies onto the car chassis from the side without any metal parts obstructing the view. Furthermore, the rotation does not require manual operation, saving time and effort and improving the efficiency of automobile manufacturing.

[0020] With the rack two set up, the rack two is equidistantly arranged on the movement path of the gear. As the suspension slide rail drives the cantilever and other structures forward, the gear intermittently meshes with the rack two, so that the car chassis between the rotating plate and the clamping plate rotates intermittently in one direction. This allows different component and assembly assembly points to be set on both sides of the movement path of the fixed frame. Depending on the different angles the car chassis rotates to, the parts and assemblies that are easy to assemble at that angle can be installed on the chassis in an orderly manner, saving time and effort.

[0021] With the storage slot and telescopic plate, the car chassis can be easily placed on an unobstructed rack. Then, when the suspension rail starts to move the cantilever, the telescopic plate extends out of the storage slot under the meshing action of the gear and rack. Subsequently, the cylinder drives the clamping plate to rise, so that the clamping plate and the telescopic plate cooperate to fix the car chassis, thus completing the installation and fixing of the car chassis without the need for manual tightening of bolts, saving time and effort.

[0022] Through the cooperation of gear and rack two, after all the components and assemblies are installed on the car chassis, the suspension slide rail drives the cantilever to move in the initial direction, so that the gear and rack two come into contact and drive the rotating rod one to rotate in the opposite direction, so that the moving ring drives the telescopic plate to reset through the sliding traction rod, and the telescopic plate returns to the storage slot, so that the car chassis can be removed from the top of the placement rack without workers having to loosen the bolts one by one for disassembly. Moreover, the clamp can be opened when the opening of the placement rack is facing upwards, without the need to support the bottom of the car chassis when the clamp is loosened, further improving the efficiency of car chassis manufacturing. Attached Figure Description

[0023] Figure 1 This is a three-dimensional schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a three-dimensional schematic diagram of the overall structure of the present invention;

[0025] Figure 3 As shown in this invention Figure 1 Schematic diagram at point A in the middle;

[0026] Figure 4 As shown in this invention Figure 2Enlarged view at point B in the middle;

[0027] Figure 5 This is a three-dimensional schematic diagram of the rotating wheel structure shown in this invention;

[0028] Figure 6 This is a three-dimensional schematic diagram of the rotating shaft structure shown in this invention;

[0029] Figure 7 This is a three-dimensional schematic diagram of the connecting rod structure shown in this invention;

[0030] Figure 8 As shown in this invention Figure 2 Enlarged view at point C;

[0031] Figure 9 As shown in this invention Figure 2 Enlarged view at point D;

[0032] Figure 10 This is a three-dimensional schematic diagram of the cylinder structure shown in this invention.

[0033] In this invention, the reference numerals are: 1. lifting beam; 2. connecting frame;

[0034] Suspension Components: 301. Suspension Rail; 302. Cantilever; 303. Suspension Cable; 304. Hanger; 305. Fixing Frame; 306. Rotating Shaft; 307. Turntable; 308. Rotating Rod I; 309. Gear; 310. Rack I; 311. Rack II; 312. Worm Gear; 313. Rotating Wheel I; 314. Ratchet I; 315. Worm Gear; 316. Pawl I; 317. Rotating Rod II; 318. Sprocket I; 319. Sprocket II; 320. Placement Frame;

[0035] Fixed components: 401, Pulley 1; 402, Rotating rod 3; 403, Pulley 2; 404, Rotating wheel 2; 405, Ratchet 2; 406, Pawl 2; 407, Connecting rod; 408, Rotating rod 4; 409, Reciprocating screw; 410, Moving seat; 411, Stand; 412, Arc block; 413, Rotating ring; 414, Moving ring; 415, Traction rod; 416, Storage slot; 417, Telescopic plate; 418, Cylinder; 419, Clamping plate. Detailed Implementation

[0036] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0037] See 1~ Figure 10 As shown, this is an embodiment of the present invention, and the provided automobile manufacturing lifting device will be described in detail below:

[0038] A type of lifting tool used in automobile manufacturing, such as Figures 1 to 7 As shown, it includes: a suspension beam 1, with multiple connecting frames 2 fixedly connected to the bottom of the suspension beam 1. The connecting frames 2 are evenly distributed at the bottom of the suspension beam 1, and a suspension component is provided at the bottom of the connecting frame 2.

[0039] The suspension assembly includes a suspension rail 301 fixedly connected to the bottom of the connecting frame 2. A cantilever 302 is slidably connected below the suspension rail 301. Four suspension cables 303 are fixedly connected to the bottom of the cantilever 302. A hanger 304 is fixedly connected to the bottom of all four suspension cables 303. The ends of the four suspension cables 303 furthest from the cantilever 302 are fixedly connected to the four corner points of the hanger 304. A U-shaped fixing frame 305 is fixedly connected to the bottom of the hanger 304. Two rotating shafts 306 are rotatably connected to the U-shaped sidewall of the fixing frame 305. The two rotating shafts 306 are symmetrically arranged on the fixing frame 305. A turntable 307 is fixedly connected to one side of the rotating shafts 306 that are close to each other. A vertical rotating rod 308 is rotatably connected to the outer wall of the U-shaped sidewall of the fixed frame 305. A gear 309 is fixedly connected to the top of the rotating rod 308. A rack 310 is fixedly connected to the side of the two connecting frames 2 at both ends of the lifting beam 1. A rack 311 is fixedly connected to the side of the connecting frame 2 away from the rack 310. The connecting frame 2 with rack 311 is the connecting frame 2 without rack 310. Rack 310 and rack 311 are the same size. The gear 309 can mesh with both rack 310 and rack 311. In a coordinated arrangement, a worm gear 312 is fixedly connected to the bottom end of a rotating rod 308. A rotating wheel 313 is rotatably connected to the side of a fixed frame 305 near the worm gear 312. A ratchet 314 is rotatably connected inside the rotating wheel 313. A worm gear 315 is coaxially fixedly connected to the side of the ratchet 314 away from the rotating wheel 313. The worm gear 315 meshes with the worm gear 312. A pawl 316 is rotatably connected inside the rotating wheel 313. A torsion spring is provided at the connection between the rotating wheel 313 and the pawl 316. The pawl 316 forms a limiting engagement with the ratchet 314 through the torsion spring. The rotating rod 308 is rotatably connected inside the fixed frame 305. A rotating rod 317 is connected to the rotating rod 317. One end of the rotating rod 317 passes through the fixed frame 305 and is fixedly connected to the rotating wheel 313. Two sprockets 318 are symmetrically fixedly connected to the surface of the rotating rod 317. Sprockets 319 are fixedly connected to the surface of the two rotating shafts 306. The two sprockets 318 and the two sprockets 319 above them are connected to each other by a chain. The sprockets 318 and sprockets 319 form a transmission cooperation through the chain. A placement frame 320 is fixedly connected to the side of the two turntables 307 that are close to each other. The placement frame 320 is L-shaped.

[0040] Furthermore, such as Figures 4 to 10 As shown, a fixing assembly is provided at the inner bottom of the fixing frame 305. The fixing assembly includes a pulley 401 that is coaxially fixedly connected to the worm gear 315. The pulley 401 is located on the side of the worm gear 315 away from the fixing frame 305. A rotating rod 402 is provided directly below the pulley 401. A pulley 403 is fixedly connected to the side of the rotating rod 402 near the pulley 401. The pulleys 401 and 403 are connected to each other by a belt. A rotating wheel 404 is rotatably connected to the side of the fixing frame 305 near the pulley 403. A ratchet 405 is rotatably connected inside the rotating wheel 404. A pawl 406 is rotatably connected to the inner side of the rotating wheel 404. The pawl 406 is connected to the rotating wheel 404. A torsion spring 2 is provided at the joint. Pawl 2 406 forms a limiting engagement with ratchet 2 405 through the torsion spring 2. Rotating rod 3 402 is connected to ratchet 2 405 on the side near the fixed frame 305. A connecting rod 407 is rotatably connected inside the fixed frame 305. One end of the connecting rod 407 passes through the fixed frame 305 and is fixedly connected to the side of rotating wheel 2 404 near the fixed frame 305 through the side wall of the fixed frame 305. A rotating rod 408 is rotatably connected to the inner bottom of the fixed frame 305. Both ends of the rotating rod 408 are fixedly connected to reciprocating screws 409. The other end of the reciprocating screws 409 is fixedly connected to the connecting rod 407. The surfaces of the two reciprocating screws 409 are threaded with moving seats 410. The movable base 410 is located below the two turntables 307. Two uprights 411 are fixedly connected to the top of each movable base 410, forming a group of two uprights 411. The bottom of each upright 411 is mounted on the movable base 410. An arc-shaped block 412 is fixedly connected to one end of each upright 411 near the turntable 307, also forming a group of two arc-shaped blocks 412. A rotating ring 413 is slidably connected to the inner arc surface of each group of arc-shaped blocks 412. A groove is formed on the inner arc surface of the arc-shaped block 412, allowing the rotating ring 413 to slide against the arc-shaped block 412 through the groove. A movable ring 414 is fixedly connected to the inner arc surface of the rotating ring 413. Two traction rods 415 are fixedly connected to the inner arc surface of each of the two movable rings 414, forming a group of four traction rods 415. One or two sets of traction rods 415 are symmetrically arranged in two moving rings 414. A storage slot 416 is provided in the middle of the two turntables 307. One end of the traction rods 415 away from the moving rings 414 is fixedly connected to a telescopic plate 417. The end of the telescopic plate 417 away from the traction rods 415 is inserted into the storage slot 416. The width of the storage slot 416 is the same as that of the telescopic plate 417. The telescopic plate 417 and the storage slot 416 form a sliding fit. A cylinder 418 is fixedly installed on the side of the turntable 307 near the placement frame 320. The cylinder 418 is located directly below the placement frame 320. The movable shaft of the cylinder 418 passes through the placement frame 320. A clamping plate 419 is fixedly connected to the top of the movable shaft of the cylinder 418 passing through the placement frame 320.

[0041] Based on the above embodiments, the following is the complete working process and working principle of the above embodiments:

[0042] The initial state is:

[0043] Gear 309 is not in contact with rack 310, rotating rod 308 is not rotating, turntable 307 is not rotating, placement rack 320 is in a horizontal state, two moving seats 410 are located at the ends of two reciprocating screws 409 away from rotating rod 408, moving ring 414 is in contact with turntable 307, telescopic plate 417 is located in storage groove 416, the movable shaft of cylinder 418 is not extended, and the bottom surface of clamping plate 419 is in contact with placement rack 320.

[0044] The working status is:

[0045] Placement of car chassis:

[0046] When different parts and assemblies need to be installed on the car chassis, the two ends of the car chassis are placed on top of the two mounting brackets 320. After they are placed stably, the suspension slide rail 301 is activated, so that the suspension slide rail 301 drives the cantilever 302 to move towards the rack 310 through the internal conveyor belt.

[0047] Fixed chassis:

[0048] The cantilever 302 moves the fixed frame 305 via the sling 303 and the hanger 304, causing the rotating rod 308 on one side of the fixed frame 305 to approach the nearest rack 310 until the gear 309 at the top of the rotating rod 308 meshes with the rack 310. This causes the rotating rod 308 to rotate the worm gear 312 under the action of the rack 310, which in turn rotates the worm wheel 315. The rotation of the worm wheel 315 synchronously drives the pulley 401 to rotate. During this process, the worm wheel 315 drives the ratchet 314... Figure 5In the middle state, the ratchet rotates clockwise, causing ratchet 314 to continuously disengage pawl 316. Therefore, ratchet 314 does not drive wheel 313 to rotate. Pulley 401 drives rotating rod 402 to rotate via belt and pulley 403. Rotating rod 402 drives ratchet 405 to rotate, and ratchet 405 rotates clockwise in the state shown in Figure 4. This, through the interaction of ratchet 405 and pawl 406, drives wheel 404 to rotate. Rotating rod 408, fixedly connected to wheel 404, drives reciprocating screw 409 to rotate. Since the moving seat 410 is in its initial state at this time, it is located near the turntable 307, and the reciprocating screw 409... The bidirectional thread drives the two movable seats 410 to move away from the turntable 307, thereby driving the arc block 412 to move synchronously through the upright 411. In turn, the arc block 412 drives the rotating ring 413 and the movable ring 414 to move until the movable seat 410 moves to the end of the reciprocating thread of the reciprocating screw 409 close to the rotating rod 408. At this time, the movable ring 414 drives the telescopic plate 417 to slide out of the storage groove 416 through the traction rod 415 until most of the telescopic plate 417 slides out of the storage groove 416, and the end away from the traction rod 415 remains in the storage groove 416. At this time, the cylinder 418 starts and pushes the clamping plate 419 to rise, so that the clamping plate 419 and the telescopic plate 417 cooperate to fix the car chassis.

[0049] Rotary assembly:

[0050] After the two ends of the car chassis are fixed between the clamping plate 419 and the telescopic plate 417, the suspension slide rail 301 continues to drive the cantilever 302 to move, causing the gear 309 to disengage from the rack 310 and gradually engage with the rack 311, thereby driving the rotating rod 308 to rotate in the opposite direction. The rotating rod 308 drives the worm wheel 315 to rotate through the worm 312 at the bottom, causing the worm wheel 315 to drive the ratchet 314 to... Figure 5 In the middle state, it rotates counterclockwise, causing ratchet 314 and pawl 316 to engage and drive wheel 313 to rotate, which in turn drives rotating rod 317 to rotate. Rotating rod 317 drives two sprockets 318 to rotate, which in turn drives sprocket 319 to rotate via chain. Sprocket 319 then drives turntable 307 to rotate via shaft 306. During this process, ratchet 405 continuously disengages pawl 406, preventing wheel 404 from rotating. This causes the turntable 307 to drive the car chassis within clamp 419 and telescopic plate 417 to rotate. When turntable 307 rotates, moving ring 414 and rotating ring 413 rotate synchronously with turntable 307. Rotating ring 413 rotates through sliding engagement with arc block 412, thus achieving car chassis rotation without manual operation, facilitating car chassis assembly.

[0051] Intermittent rotation:

[0052] When gear 309 contacts and meshes with rack 311, gear 309, rotating rod 308, worm 312, worm wheel 315, sprocket 318, chain, and sprocket 319 will drive turntable 307 to rotate, causing the car chassis to rotate. Since the connecting frame 2 is equidistantly arranged on the suspension beam 1, rack 311 is equidistantly arranged on the moving path of gear 309. As the suspension slide rail 301 drives the cantilever 302 and other structures forward, gear 309 intermittently meshes with rack 311, causing the car chassis between telescopic plate 417 and clamp 419 to rotate intermittently in one direction. This allows assembly points for different components and assemblies to be set on both sides of the moving path of fixed frame 305. Depending on the angle at which the car chassis rotates, components and assemblies that are easy to assemble at that angle can be installed on the chassis in an orderly manner, saving time and effort.

[0053] To prevent loosening:

[0054] When gear 309 meshes with rack 311, causing rotating rod 308 to rotate, worm gear 312 drives worm wheel 315 and pulley 401 to rotate. This causes pulley 401 to drive pulley 403, rotating rod 402, and ratchet 405 to rotate via belt. However, ratchet 405 rotates counterclockwise as shown in Figure 4 and cannot drive rotating wheel 404 to rotate. Consequently, it will not drive connecting rod 407, rotating rod 408, and reciprocating screw 409 to rotate. This ensures that telescopic plate 417 and clamping plate 419 continuously clamp the car chassis during the rotational assembly process.

[0055] Remove the car chassis:

[0056] After all components and assemblies are installed on the vehicle chassis, the suspension slide rail 301 drives the cantilever 302 to move in the initial direction, causing the gear 309 to contact the rack 310 located on the connecting bracket 2 at the other end of the suspension beam 1, and driving the rotating rod 308 to rotate in the opposite direction. This, through the worm gear 312, worm wheel 315, pulley 401, belt, pulley 403, rotating rod 402, ratchet 405, and pawl 406, drives the rotating wheel 404 to rotate. Consequently, the connecting rod 407 and the rotating rod 408 drive the reciprocating screw 409 to rotate, making... The two movable seats 410 slide down towards the side closer to the turntable 307 under the action of the reciprocating threads, thereby driving the upright frame 411, arc block 412, rotating ring 413 and movable ring 414 to reset. This allows the movable ring 414 to drive the telescopic plate 417 back into the storage slot 416 via the traction rod 415, so that the car chassis can be removed from the top of the placement rack 320 without workers having to loosen the bolts one by one for disassembly. Moreover, compared with the method of using clamps, there is no need to set up a support at the bottom of the car chassis when the telescopic plate 417 is reset, which further improves the efficiency of car chassis manufacturing.

[0057] The above description is merely an embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A lifting tool for automobile manufacturing, characterized in that, include: A suspension beam (1) is fixedly connected to the bottom of the suspension beam (1) with multiple connecting frames (2). The connecting frames (2) are evenly distributed at the bottom of the suspension beam (1), and a suspension assembly is provided at the bottom of the connecting frame (2). The suspension assembly includes a suspension rail (301) fixedly connected to the bottom of the connecting frame (2). A cantilever (302) is slidably connected below the suspension rail (301). Four slings (303) are fixedly connected to the bottom of the cantilever (302). A hanger (304) is fixedly connected to the bottom of the four slings (303). The ends of the four slings (303) away from the cantilever (302) are fixedly connected to the four corner points of the hanger (304). A U-shaped fixing frame (305) is fixedly connected to the bottom of the hanger (304). Two rotating shafts (306) are rotatably connected to the U-shaped sidewall. The two rotating shafts (306) are symmetrically arranged on the fixed frame (305). A turntable (307) is fixedly connected to the side of the two rotating shafts (306) that are close to each other. A vertical rotating rod (308) is rotatably connected to the outer wall of the U-shaped sidewall of the fixed frame (305). A gear (309) is fixedly connected to the top of the rotating rod (308). A rack (310) is fixedly connected to the side of the connecting frame (2) at both ends of the lifting beam (1). A gear (310) is fixedly connected to the side of the connecting frame (2) away from the rack (310). A rack and pinion 2 (311) is attached. A worm gear (312) is fixedly connected to the bottom end of the rotating rod 1 (308). A rotating wheel 1 (313) is rotatably connected to the side of the fixed frame (305) near the worm gear (312). A ratchet 1 (314) is rotatably connected inside the rotating wheel 1 (313). A worm wheel (315) is coaxially fixedly connected to the side of the ratchet 1 (314) away from the rotating wheel 1 (313). The worm wheel (315) meshes with the worm gear (312). A pawl 1 (316) is rotatably connected inside the rotating wheel 1 (313). The fixed frame (305) rotates internally. A rotating rod (317) is connected to the rotating rod (317). One end of the rotating rod (317) passes through the fixed frame (305). The end of the rotating rod (317) passing through the fixed frame (305) is fixedly connected to the rotating wheel (313). Two sprockets (318) are fixedly connected to the surface of the rotating rod (317). Sprockets (319) are fixedly connected to the surfaces of the two rotating shafts (306). The two sprockets (318) and the two sprockets (319) are connected to each other by a chain. A placement frame (320) is fixedly connected to the side of the two turntables (307) that are close to each other. The inner bottom of the fixing frame (305) is provided with a fixing component, which includes a pulley (401) coaxially fixedly connected to the worm gear (315). The pulley (401) is located on the side of the worm gear (315) away from the fixing frame (305). A rotating rod (402) is provided directly below the pulley (401). A pulley (403) is fixedly connected to the side of the rotating rod (402) near the pulley (401). The pulley (401) and the pulley (403) are connected to each other by a belt. A rotating wheel (404) is rotatably connected to the side of the fixing frame (305) near the pulley (403). The inner side of the rotating wheel 2 (404) is rotatably connected to the ratchet 2 (405). The side of the rotating rod 3 (402) near the fixed frame (305) is connected to the ratchet 2 (405). The inner side of the rotating wheel 2 (404) is rotatably connected to the pawl 2 (406). The inner side of the fixed frame (305) is rotatably connected to the connecting rod (407). One end of the connecting rod (407) passes through the fixed frame (305). The end of the connecting rod (407) passing through the fixed frame (305) is fixedly connected to the side of the rotating wheel 2 (404) near the fixed frame (305). The inner bottom of the fixed frame (305) is rotatably connected to the rotating rod 4 (408). Both ends of the rotating rod (408) are connected to reciprocating lead screws (409). One end of the rotating rod (408) is fixedly connected to the connecting rod (407). The surfaces of the two reciprocating lead screws (409) are threaded with movable seats (410). The tops of the two movable seats (410) are fixedly connected to two uprights (411). The uprights (411) are in pairs. The bottom of one set of uprights (411) is set on the movable seat (410). The end of one set of uprights (411) near the turntable (307) is fixedly connected to an arc block (412). The arc blocks (412) are in pairs. The inner arc surface of one set of arc blocks (412) is slidably connected. A rotating ring (413) is connected to the inner arc surface of the two rotating rings (413), and a moving ring (414) is fixedly connected to the inner arc surface of the two moving rings (414). Two traction rods (415) are fixedly connected to the inner arc surface of each of the two moving rings (414). The four traction rods (415) are arranged in pairs. The two sets of traction rods (415) are symmetrically arranged in the two moving rings (414). A storage groove (416) is opened in the middle of the two turntables (307). A telescopic plate (417) is fixedly connected to the end of one set of traction rods (415) away from the moving ring (414). The end of the telescopic plate (417) away from the traction rod (415) is inserted into the storage groove (416). A cylinder (418) is fixedly installed on one side of the two turntables (307) near the placement frame (320). The cylinder (418) is located directly below the placement frame (320). The movable shaft of the cylinder (418) passes through the placement frame (320). A clamp (419) is fixedly connected to the top of the movable shaft of the cylinder (418) passing through the placement frame (320). The rack two (311) is equidistantly arranged on the moving path of the gear (309). During the forward movement of the cantilever (302), the gear (309) intermittently meshes with the rack two (311), thereby causing the car chassis between the rotating plate and the clamping plate (419) to rotate intermittently in one direction. Under the meshing action of gear (309) and rack (310), the telescopic plate (417) is driven to extend out of the storage groove (416), and then the cylinder (418) drives the clamp (419) to rise, so that the clamp (419) and the telescopic plate (417) cooperate to fix the car chassis. After all the components and assemblies are installed on the car chassis, the cantilever (302) moves in the initial direction, causing the gear (309) to contact the rack (311) and drive the rotating rod (308) to rotate in the opposite direction, so that the moving ring (414) drives the telescopic plate (417) to reset through the traction rod (415), so that the telescopic plate (417) returns to the storage slot (416), and the car chassis is removed from the top of the mounting rack (320).

2. The automobile manufacturing lifting tool according to claim 1, characterized in that, A torsion spring is provided at the connection between the first rotating wheel (313) and the first pawl (316), and the first pawl (316) forms a limiting fit with the first ratchet (314) through the torsion spring.

3. The automobile manufacturing lifting tool according to claim 2, characterized in that, The racks 1 (310) and 2 (311) are the same size, and the gear (309) can mesh with both racks 1 (310) and 2 (311).

4. The automobile manufacturing lifting tool according to claim 3, characterized in that, A chain is fitted on the two sprockets (318) and (319), and the sprockets (318) and (319) are connected by the chain.

5. A lifting device for automobile manufacturing according to claim 4, characterized in that, The placement rack (320) is L-shaped.

6. A lifting device for automobile manufacturing according to claim 5, characterized in that... A torsion spring is provided at the connection between the second pawl (406) and the second wheel (404), and the second pawl (406) and the second wheel (405) form a limiting engagement through the second torsion spring.

7. A lifting device for automobile manufacturing according to claim 6, characterized in that... The inner arc surface of the arc block (412) is provided with a groove, and the rotating ring (413) forms a sliding fit with the arc block (412) through the groove.

8. A lifting device for automobile manufacturing according to claim 7, characterized in that... The width of the storage groove (416) is the same as that of the telescopic plate (417), and the telescopic plate (417) and the storage groove (416) form a sliding fit.

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