Heavy workpiece lifting and overturning equipment

Abstract

The invention belongs to the technical field of workpiece machining auxiliary equipment, and particularly relates to heavy workpiece lifting and overturning equipment. Through mutual cooperation of the lifting structure, the clamping jaw rotating structure and the clamping structure, the clamping structure is started to clamp a workpiece, the lifting structure drives the workpiece to lift and carry, and when the workpiece needs to be overturned, the driving gear and the reduction gear drive the hollow pipe to rotate, so that the clamping structure clamps the workpiece to overturn. When the clamping structure needs to clamp workpieces of different sizes, the two arc-shaped adjusting plates get close to each other by adjusting the screw rod, so that the distance between the two clamping blocks is adjusted, fine adjustment of the distance between the clamping blocks is achieved, and the clamping range of the clamping structure is enlarged; and furthermore, through mutual cooperation of a supporting and guiding structure and a stabilizing structure, when the lifting structure drives the clamping jaw rotating structure to move, the clamping jaw rotating structure is guided and supported, and the workpiece lifting and overturning equipment is more stable when the workpiece is carried and overturned.

Description

Technical Field

[0001] The invention belongs to the technical field of workpiece processing auxiliary equipment, and in particular relates to a heavy workpiece lifting and turning equipment. Background Art

[0002] A workpiece refers to the object being processed during machining. It can be a single part or a combination of several parts. There are various ways to process a workpiece, including turning, milling, planing, grinding, casting, forging, etc. The processing steps of the workpiece also change with the change of the processing method.

[0003] During the processing of heavy workpieces, it is sometimes necessary to move and flip the heavy workpieces. The moving and flipping are usually done manually, which makes the moving and flipping of heavy workpieces inconvenient. In addition, manual moving and flipping is time-consuming and labor-intensive, and there are certain safety hazards, which may also affect the health of workers. Manual moving and flipping of heavy workpieces also greatly reduces production efficiency.

[0004] Therefore, there is an urgent need for a heavy workpiece lifting and turning device to solve the problems of low efficiency caused by manual turning of heavy workpieces. Summary of the invention

[0005] The purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art and provide a heavy workpiece lifting and turning device.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] The present invention provides a heavy workpiece lifting and flipping device, comprising a support guide structure and a clamping claw rotating structure adapted to the support guide structure, wherein the support guide structure comprises a support bottom plate and a support frame fixed to the support bottom plate; a lifting structure is fixed on the top of the support frame to facilitate the clamping claw rotating structure to lift and lower along the support frame; the clamping claw rotating structure is also connected to a clamping structure for clamping a workpiece;

[0008] The lifting structure drives the clamping jaw rotating structure to lift and lower, and the clamping jaw rotating structure drives the clamping structure to open, close and rotate, thereby realizing the lifting and turning of the workpiece.

[0009] Preferably, the clamping claw rotating structure includes a hollow tube, a hollow tube installation box for installing the hollow tube, and a bearing plate slidably connected to the support frame, the support frame is fixedly provided with a first guide plate in the vertical direction close to one side of the bearing plate, and the bearing plate is fixedly provided with a guide block matched with the first guide plate on one side close to the support frame, so as to realize the guide block moving in the vertical direction along the first guide plate, thereby driving the bearing plate to move in the vertical direction along the support frame; the hollow tube is rotatably fixed in the hollow tube installation box, and the side wall of the hollow tube installation box is provided with a through hole matched with the hollow tube, One end of the hollow tube is exposed outside the hollow tube installation box and is fixedly connected to the clamping structure; a reduction gear is fixedly arranged on the outer circumference of the hollow tube for driving the hollow tube to rotate; a driving gear is fixedly arranged on the top of the hollow tube installation box through a driving motor and for driving the reduction gear to rotate; the bearing plate is fixedly connected to the hollow tube installation box, and a hole is also arranged on the bearing plate to facilitate accommodating the end of the hollow tube exposed outside the hollow tube installation box; the reduction gear drives the hollow tube to rotate, thereby realizing the rotation of the clamping structure; a reinforcing rib is also fixedly arranged between the hollow tube installation box and the bearing plate;

[0010] A cylinder is fixedly provided on the side of the hollow tube mounting box away from the supporting plate, and the cylinder includes a cylinder shaft, one end of which passes through the hollow tube and is fixedly connected to the clamping structure; preferably, the cylinder is fixedly connected to the hollow tube mounting box through a support frame, and the cylinder shaft is slidably connected to the hollow tube.

[0011] Furthermore, the driving shaft of the driving motor is fixedly connected to the second bevel gear, and the driving gear is fixedly connected to the first bevel gear through a coupling, and the first bevel gear is meshed with the second bevel gear to achieve 90-degree transmission between the driving motor and the driving gear; preferably, the driving motor is fixed on the hollow tube mounting box through a hollow box, and the first bevel gear and the second bevel gear are both located in the hollow box.

[0012] Preferably, the clamping structure includes an installation box, a side of the installation box close to the supporting plate is fixedly connected to the hollow tube, and a side of the installation box away from the supporting plate is provided with a cavity for installing two groups of connecting rod lever type grasping structures, each group of the connecting rod lever type grasping structures includes a clamping assembly hinged to the installation box at point A and one end of which is used to clamp the workpiece, the other end of the clamping assembly is hinged to the rotating plate, and the end of the rotating plate away from the clamping assembly is hinged to the cylinder shaft, and the extension and contraction of the cylinder shaft drives the rotating plate to drive the clamping assembly to rotate around the hinge point A within a specific range to realize the opening and closing of the two clamping assemblies; preferably, a storage block is also provided in the installation box, and each end of the rotating plate away from the clamping assembly is hinged to the storage block, and the storage block is fixedly connected to the cylinder shaft.

[0013] Preferably, a spring assembly is provided between the two rotating plates to facilitate the two clamping assemblies to move away from each other.

[0014] Preferably, the clamping assembly includes a clamping block, a clamping arm hinged to the mounting box at point A via a latch, one end of the clamping arm being hinged to the rotating plate, and the other end being fixedly connected to the clamping block for clamping the workpiece.

[0015] Preferably, one side of the clamping assembly for clamping the workpiece is fixedly provided with an adjustment structure for facilitating clamping of workpieces of different specifications.

[0016] Furthermore, the adjustment structure includes an arc-shaped adjustment plate, a threaded barrel is fixedly provided on one side of the arc-shaped adjustment plate close to the clamping assembly, a through hole is opened on the clamping assembly for the screw to pass through, the screw passes through the through hole and is threadedly connected to the threaded barrel to adjust the distance between the arc-shaped adjustment plate and the clamping assembly.

[0017] Preferably, the lifting structure includes a mounting plate and a chain gear structure, the chain gear structure includes a top sprocket arranged on the mounting plate, a bottom sprocket arranged on the supporting base plate, and a chain wrapped around the top sprocket and the bottom sprocket, a servo motor for driving the top sprocket to rotate is also fixed on the mounting plate, the chain is fixedly connected to the clamping jaw rotating structure, the servo motor drives the top sprocket to rotate clockwise or counterclockwise, drives the chain to move circumferentially, and realizes the lifting and lowering of the clamping jaw rotating structure; the sprockets in the lifting structure are all fixed to the supporting base plate or the mounting plate through mounting blocks.

[0018] Furthermore, the chain gear structure is composed of multiple groups, each group includes multiple top sprockets arranged on the mounting plate and multiple bottom sprockets arranged on the supporting bottom plate; a rotating rod is provided between a group of top sprockets corresponding to each other on the mounting plate (201), a turbine is fixedly provided on the rotating rod, and a worm matched with the turbine is fixedly provided on the transmission shaft of the servo motor; the worm drives the turbine to rotate, driving the rotating rod to drive a group of top sprockets corresponding to each other to rotate, thereby driving the chain to move circumferentially; preferably, a side sprocket for adjusting the tightness of the chain is fixedly provided on the bottom surface of the mounting plate close to the stabilizing structure; the servo motor is fixed to the mounting plate through a protective box, the protective box is provided with a hole through which the transmission rod passes, and the turbine and worm are both located in the protective box.

[0019] Preferably, a stabilizing structure is fixedly provided on the side of the support base away from the clamping structure, and the stabilizing structure is used for balancing the heavy workpiece lifting and flipping equipment when the clamping structure clamps the workpiece. The stabilizing structure includes a counterweight block fixedly connected to the support base plate, and a second guide plate is fixedly provided on the counterweight block, and a slide rail is fixedly provided on the side of the second guide plate close to the clamping jaw rotating structure, and a sliding block adapted to the slide rail is fixedly provided on the clamping jaw rotating structure, and the clamping jaw rotating structure is lifted and lowered, driving the sliding block to lift and lower along the slide rail; preferably, the second guide plate is provided with a vertical groove, and a limit block is fixedly provided on the end of the cylinder shaft away from the clamping structure after passing through the vertical groove to prevent the cylinder shaft from over-limiting, and the cylinder shaft moves up and down along the vertical groove.

[0020] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0021] The present invention starts the clamping structure to hold the workpiece through the cooperation between the lifting structure, the clamping claw rotating structure and the clamping structure, and drives the workpiece to be lifted and transported through the lifting structure. When the workpiece needs to be flipped, the driving motor is started to make the first bevel gear mesh with the second bevel gear and rotate, so that the driving gear and the reduction gear drive the hollow tube to rotate, so that the workpiece clamped by the clamping structure is flipped.

[0022] When the clamping structure needs to clamp workpieces of different sizes, the two arc-shaped adjustment plates are brought closer to each other by adjusting the screw, thereby adjusting the distance between the two clamping blocks, achieving fine-tuning of the distance between the clamping blocks, and expanding the clamping range of the clamping structure; further, through the mutual cooperation of the supporting guide structure and the stabilizing structure, the lifting structure guides and supports the clamping jaw rotating structure when driving the clamping jaw rotating structure to move, thereby making the clamping jaw rotating structure more stable when lifting and lowering, and making the workpiece lifting and flipping equipment more stable when the workpiece is transported and flipped. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are incorporated in and constitute a part of this specification and, together with the description, serve to explain the principles of the present invention.

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0026] Figure 2 It is a structural schematic diagram of the second viewing angle of the present invention;

[0027] Figure 3 It is a structural schematic diagram of the third viewing angle of the present invention;

[0028] Figure 4 is a schematic diagram of the lifting structure of the present invention;

[0029] Figure 5 It is a schematic diagram of the gripper rotation structure of the present invention;

[0030] Figure 6 is a schematic diagram of the clamping structure of the present invention;

[0031] Figure 7 is a schematic diagram of the regulating structure of the present invention;

[0032] Figure 8 It is a schematic diagram of the stable structure of the present invention.

[0033] Among them: 1 is a support guide structure; 101 is a support bottom plate; 102 is a support frame; 103 is a first guide plate; 104 is a guide block; 2 is a lifting structure; 201 is a mounting plate; 202 is a mounting block; 203 is a rotating rod; 204 is a sprocket; 205 is a chain; 206 is a worm wheel; 207 is a worm; 208 is a servo motor; 209 is a protective box; 3 is a gripper rotating structure; 301 is a bearing plate; 302 is a hollow tube; 303 is a reduction gear; 304 is a driving gear; 305 is a driving rod; 306 is a gearbox; is the first bevel gear; 307 is the second bevel gear; 308 is the driving motor; 309 is the hollow box; 4 is the clamping structure; 401 is the installation box; 402 is the storage block; 403 is the rotating plate; 404 is the spring assembly; 405 is the clamping block; 406 is the cylinder shaft; 407 is the cylinder; 408 is the support frame; 5 is the adjustment structure; 501 is the arc adjustment plate; 502 is the threaded barrel; 503 is the screw; 6 is the stabilizing structure; 601 is the sliding block; 602 is the slide rail; 603 is the counterweight block; 604 is the second guide plate. DETAILED DESCRIPTION

[0034] Here, exemplary embodiments will be described in detail, and examples thereof are shown in the accompanying drawings. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are only examples consistent with some aspects of the present invention as detailed in the appended claims.

[0035] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0036] Example 1

[0037] See also Figure 1-8As shown, this embodiment provides a heavy workpiece lifting and flipping device, including a support guide structure 1, and a clamping claw rotating structure 3 adapted to the support guide structure 1, the support guide structure 1 includes a support base plate 101, and a support frame 102 fixed on the support base plate 101; a lifting structure 2 is fixed on the top of the support frame 102 to facilitate the clamping claw rotating structure 3 to be lifted and lowered along the support frame 102; the clamping claw rotating structure 3 is also connected to a clamping structure 4 for clamping a workpiece;

[0038] The lifting structure 2 drives the clamping jaw rotating structure 3 to lift, and the clamping jaw rotating structure 3 drives the clamping structure 4 to open, close and rotate, so as to realize the lifting and turning of the workpiece.

[0039] Preferably, the clamping claw rotating structure 3 includes a hollow tube 302, a hollow tube installation box for installing the hollow tube 302, and a bearing plate 301 slidably connected to the support frame 102, the support frame 102 is fixedly provided with a first guide plate 103 in the vertical direction on one side close to the bearing plate 301, and the bearing plate 301 is fixedly provided with a guide block 104 adapted to the first guide plate 103 on one side close to the support frame 102, so as to realize the guide block 104 moving along the first guide plate 103 in the vertical direction, thereby driving the bearing plate 301 to move along the support frame 102 in the vertical direction; the hollow tube 302 is rotatably fixed in the hollow tube installation box, and the side wall of the hollow tube installation box is provided with a guide block 104 adapted to the first guide plate 103. The hollow tube 302 has a through hole, one end of the hollow tube 302 is exposed outside the hollow tube installation box and is fixedly connected to the clamping structure 4, a reduction gear 303 is fixedly arranged on the outer circumference of the hollow tube 302 for driving the hollow tube 302 to rotate, and a driving gear 304 is fixedly arranged on the top of the hollow tube installation box through a driving motor 308 and for driving the reduction gear 303 to rotate; the bearing plate 301 is fixedly connected to the hollow tube installation box, and the bearing plate 301 is also provided with a hole for accommodating one end of the hollow tube 302 exposed outside the hollow tube installation box; the reduction gear 303 drives the hollow tube 302 to rotate, thereby realizing the rotation of the clamping structure 4; a reinforcing rib is also fixedly arranged between the hollow tube installation box and the bearing plate 301;

[0040] A cylinder 407 is fixedly arranged on one side of the hollow tube installation box away from the bearing plate 301. The cylinder 407 includes a cylinder shaft 406. One end of the cylinder shaft 406 passes through the hollow tube 302 and is fixedly connected to the clamping structure 4. The cylinder shaft 406 is slidably connected to the hollow tube 302. Preferably, the cylinder 407 is fixedly connected to the hollow tube installation box via a support frame 408. Figure 5-6 shown.

[0041] Further, the driving shaft of the driving motor 308 is fixedly connected to the second bevel gear 307, and the driving gear 304 is fixedly connected to the first bevel gear 306 through a coupling, and the first bevel gear 306 is meshed with the second bevel gear 307 to achieve a 90-degree transmission between the driving motor 308 and the driving gear 304; preferably, the driving motor 308 is fixedly mounted on the hollow tube mounting box through a hollow box 309, and the first bevel gear 306 and the second bevel gear 307 are both located in the hollow box 309, see Figure 5 shown.

[0042] Preferably, the clamping structure 4 includes an installation box 401, and a side of the installation box 401 close to the carrier plate 301 is fixedly connected to the hollow tube 302, and a side of the installation box 401 away from the carrier plate 301 is provided with a cavity for installing two groups of connecting rod lever type grasping structures, each group of the connecting rod lever type grasping structures includes a clamping assembly hinged to the installation box 401 at point A and one end of which is used to clamp the workpiece, and the other end of the clamping assembly is hinged to the rotating plate 403, and the end of the rotating plate 403 away from the clamping assembly is hinged to the cylinder shaft 406, and the extension and contraction of the cylinder shaft 406 drives the rotating plate 403 to drive the clamping assembly to rotate within a specific range around the hinge point A, thereby realizing the opening and closing of the two clamping assemblies; preferably, a storage block is also provided in the installation box 401, and one end of each of the rotating plates 403 away from the clamping assembly is hinged to the storage block 402, and the storage block 402 is fixedly connected to the cylinder shaft 406, see Figure 5-7 shown.

[0043] Preferably, a spring assembly 404 is provided between the two rotating plates 403 to facilitate the two clamping assemblies to move away from each other.

[0044] Preferably, the clamping assembly includes a clamping block 405, a clamping arm hinged to the mounting box 401 at point A through a latch, one end of the clamping arm is hinged to the rotating plate 403, and the other end is fixedly connected to the clamping block 405 for clamping the workpiece, see Figure 7 shown.

[0045] Preferably, one side of the clamping assembly for clamping the workpiece is fixedly provided with an adjustment structure 5 for facilitating clamping of workpieces of different specifications.

[0046] Further, the adjustment structure 5 includes an arc-shaped adjustment plate 501, a threaded barrel 502 is fixedly arranged on one side of the arc-shaped adjustment plate 501 close to the clamping assembly, a through hole is provided on the clamping assembly for the screw 503 to pass through, the screw 503 passes through the through hole and is screwed to the threaded barrel 502 to adjust the distance between the arc-shaped adjustment plate 501 and the clamping assembly, see Figure 7 shown.

[0047] Preferably, the lifting structure 2 includes a mounting plate 201 and a chain gear structure, wherein the chain gear structure includes a top sprocket arranged on the mounting plate 201, a bottom sprocket arranged on the supporting base plate 101, and a chain 205 wrapped around the top sprocket and the bottom sprocket, and a servo motor 208 for driving the top sprocket to rotate is also fixed on the mounting plate 201, and the chain 205 is fixedly connected to the bearing plate 301, and the servo motor 208 drives the top sprocket to rotate clockwise or counterclockwise, driving the chain 205 to move circumferentially, thereby realizing the lifting and lowering of the clamp rotating structure 3; the sprockets 204 in the lifting structure 2 are all fixed on the supporting base plate 101 or the mounting plate 201 through the mounting block 202, see Figure 4 It should be noted that the sprocket 204 includes a top sprocket, a bottom sprocket and a side sprocket.

[0048] Preferably, a stabilizing structure 6 is fixedly provided on the side of the support base plate 101 away from the clamping structure 4, and the stabilizing structure 6 is used for balancing the heavy workpiece lifting and flipping equipment when the clamping structure 4 clamps the workpiece. The stabilizing structure 6 includes a counterweight block 603 fixedly connected to the support base plate 101, and a second guide plate 604 is fixedly provided on the counterweight block 603. A slide rail 602 is fixedly provided on the side of the second guide plate 604 close to the clamping jaw rotating structure 3. A sliding block 601 adapted to the slide rail 602 is fixedly provided on the clamping jaw rotating structure 3. The clamping jaw rotating structure (3) is lifted and lowered, driving the sliding block 601 to lift and lower along the slide rail 602; preferably, the second guide plate 604 is provided with a vertical groove, and a limit block is fixedly provided after the end of the cylinder shaft 406 away from the clamping structure 4 passes through the vertical groove to prevent the cylinder shaft 406 from exceeding the limit. The cylinder shaft 406 moves up and down along the vertical groove, see Figure 8 shown.

[0049] This embodiment also provides a working process of a heavy workpiece lifting and flipping device, which is as follows:

[0050] Place the workpiece on the opposite side of the two clamping blocks 405, start the cylinder 407, and extend the cylinder shaft 406 along the direction of the workpiece, so that the storage block 402 slides inside the installation box 401, and the two rotating plates 403 rotate through the setting of the pin shaft, so that the spring assembly 404 stretches, so that one side of the rotating plate 403 drives the clamping blocks 405 to approach each other, and the workpiece is clamped by the elastic force of the clamping blocks 405 and the spring assembly 404;

[0051] The servo motor 208 is started, and its transmission shaft drives the worm 207 to rotate, so that the worm wheel 206 meshes and rotates, driving the corresponding rotating rod 203 to rotate, so that the corresponding sprocket 204 rotates, so that the chain 205 moves in a circumferential direction, driving the carrying plate 301 to slide on the surface of the first guide plate 103, so that the carrying plate 301 drives the clamping mechanism 4 to rise and fall, so that the workpiece follows the rise and fall;

[0052] When the workpiece needs to be flipped, the drive motor 308 is started so that its transmission shaft drives the second bevel gear 307 to rotate, thereby rotating the first bevel gear 306, and further driving the rod 305 to drive the drive gear 304 to rotate, so that the reduction gear 303 meshes and rotates, driving the hollow tube 302 to rotate synchronously, and the hollow tube 302 drives the clamping mechanism 4 to rotate and flip synchronously, finally flipping the workpiece.

[0053] Example 2

[0054] The present embodiment is different from the embodiment 1 in that the chain gear structure is composed of two groups, each group includes two top sprockets arranged on the mounting plate 201, and two bottom sprockets arranged on the supporting bottom plate 101, and the chain 205 is wrapped around the corresponding top sprockets and bottom sprockets, and each chain 205 is fixedly connected to the bearing plate 301; a rotating rod 203 is provided between the two corresponding top sprockets on the mounting plate (201), a turbine 206 is fixedly provided on the rotating rod 203, and a transmission shaft of the servo motor 208 is fixedly provided with a transmission shaft connected to the turbine 206. 06; the worm 207 drives the turbine 206 to rotate, driving the rotating rod 203 to respectively drive the two top sprockets to rotate, thereby driving the chain 205 to make a circumferential motion; preferably, the bottom surface of the mounting plate 201 close to the stabilizing structure 6 is fixed with a side sprocket for adjusting the tightness of the chain 205; the servo motor 208 is fixed to the mounting plate 201 through a protective box 209, and the protective box 209 is provided with a hole through which the transmission rod 203 passes, and the turbine 206 and the worm 207 are both located in the protective box 209.

[0055] In addition, it should be noted that the servo motor 208, the drive motor 308, the cylinder 407, etc. of the present invention are all controlled by a conventional control system and will not be specifically described here.

[0056] The above description is only a specific embodiment of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention.

[0057] It should be understood that the present invention is not limited to what has been described above and that various modifications and changes may be made without departing from its scope. The scope of the present invention is limited only by the appended claims.

Claims

1. A heavy workpiece lifting and turning device, characterized in that: The invention comprises a support guide structure (1) and a clamping jaw rotating structure (3) adapted to the support guide structure (1), wherein the support guide structure (1) comprises a support base plate (101) and a support frame (102) fixed on the support base plate (101); a lifting structure (2) is fixed on the top of the support frame (102) for facilitating the clamping jaw rotating structure (3) to be lifted and lowered along the support frame (102); the clamping jaw rotating structure (3) is also connected to a clamping structure (4) for clamping a workpiece; The lifting structure (2) drives the clamping jaw rotating structure (3) to lift and lower, and the clamping jaw rotating structure (3) drives the clamping structure (4) to open, close and rotate, thereby achieving lifting and turning of the workpiece.

2. The heavy workpiece lifting and turning equipment according to claim 1 is characterized in that: The clamping claw rotating structure (3) comprises a hollow tube (302), a hollow tube installation box for installing the hollow tube (302), and a bearing plate (301) slidably connected to the support frame (102); the hollow tube (302) is rotatably fixed in the hollow tube installation box; a through hole matching the hollow tube (302) is provided on the side wall of the hollow tube installation box; one end of the hollow tube (302) is exposed outside the hollow tube installation box and is fixedly connected to the clamping structure (4); and a fixed outer circumference of the hollow tube (302) is provided. A reduction gear (303) is used to drive the hollow tube (302) to rotate, and a driving gear (304) is fixedly provided on the top of the hollow tube installation box, which is driven by a driving motor (308) and is used to drive the reduction gear (303) to rotate; the bearing plate (301) is fixedly connected to the hollow tube installation box, and the bearing plate (301) is also provided with a hole for accommodating one end of the hollow tube (302) exposed outside the hollow tube installation box; the reduction gear (303) drives the hollow tube (302) to rotate, thereby realizing the rotation of the clamping structure (4); A cylinder (407) is fixedly provided on one side of the hollow tube installation box away from the supporting plate (301), and the cylinder (407) includes a cylinder shaft (406). One end of the cylinder shaft (406) passes through the hollow tube (302) and is fixedly connected to the clamping structure (4), and the cylinder shaft (406) is slidably connected to the hollow tube (302).

3. The heavy workpiece lifting and turning equipment according to claim 2 is characterized in that: The driving shaft of the driving motor (308) is fixedly connected to the second bevel gear (307), and the driving gear (304) is fixedly connected to the first bevel gear (306) via a coupling. The first bevel gear (306) is meshed with the second bevel gear (307) to achieve 90-degree transmission between the driving motor (308) and the driving gear (304).

4. The heavy workpiece lifting and turning device according to claim 2 is characterized in that: The clamping structure (4) includes a mounting box (401), and a side of the mounting box (401) close to the supporting plate (301) is fixedly connected to the hollow tube (302), and a side of the mounting box (401) away from the supporting plate (301) is provided with a cavity for mounting two groups of connecting rod lever type grasping structures, each group of the connecting rod lever type grasping structures includes a clamping assembly hinged to the mounting box (401) at point A and one end of which is used to clamp a workpiece, the other end of the clamping assembly is hinged to a rotating plate (403), and the end of the rotating plate (403) away from the clamping assembly is hinged to a cylinder shaft (406), and the extension and contraction of the cylinder shaft (406) drives the rotating plate (403) to drive the clamping assembly to rotate around the hinge point A within a specific range, thereby realizing the opening and closing of the two clamping assemblies.

5. The heavy workpiece lifting and turning device according to claim 4 is characterized in that: The clamping assembly comprises a clamping block (405), a clamping arm hinged to the mounting box (401) at point A via a latch, one end of the clamping arm being hinged to the rotating plate (403), and the other end being fixedly connected to the clamping block (405) for clamping the workpiece.

6. The heavy workpiece lifting and turning device according to claim 4 is characterized in that: One side of the clamping assembly used for clamping the workpiece is fixedly provided with an adjustment structure (5) for facilitating clamping of workpieces of different specifications.

7. The heavy workpiece lifting and turning device according to claim 6 is characterized in that: The adjustment structure (5) comprises an arc-shaped adjustment plate (501), a threaded barrel (502) is fixedly provided on one side of the arc-shaped adjustment plate (501) close to the clamping assembly, a through hole is provided on the clamping assembly for the screw rod (503) to pass through, the screw rod (503) passes through the through hole and is screwed to the threaded barrel (502) to adjust the distance between the arc-shaped adjustment plate (501) and the clamping assembly.

8. The heavy workpiece lifting and turning device according to claim 1 is characterized in that: The lifting structure (2) comprises a mounting plate (201) and a chain gear structure, wherein the chain gear structure comprises a top sprocket arranged on the mounting plate (201), a bottom sprocket arranged on the supporting bottom plate (101), and a chain (205) surrounding the top sprocket and the bottom sprocket. A servo motor (208) for driving the top sprocket to rotate is also fixed on the mounting plate (201), and the chain (205) is fixedly connected to the clamping jaw rotating structure (3). The servo motor (208) drives the top sprocket to rotate clockwise or counterclockwise, driving the chain (205) to move in a circumferential direction, thereby realizing the lifting and lowering of the clamping jaw rotating structure (3).

9. The heavy workpiece lifting and turning device according to claim 8, characterized in that: The chain gear structure comprises multiple groups, each group comprising a plurality of top sprockets arranged on a mounting plate (201) and a plurality of bottom sprockets arranged on a supporting bottom plate (101); a rotating rod (203) is arranged between a group of top sprockets corresponding to each other on the mounting plate (201); a turbine (206) is fixedly arranged on the rotating rod (203); a worm (207) matched with the turbine (206) is fixedly arranged on the transmission shaft of the servo motor (208); the worm (207) drives the turbine (206) to rotate, drives the rotating rod (203) to drive a group of top sprockets corresponding to each other to rotate, thereby driving the chain (205) to perform circumferential motion.

10. The heavy workpiece lifting and turning device according to claim 1, characterized in that: A stabilizing structure (6) is fixedly provided on the side of the supporting base plate (101) away from the clamping structure (4), and the stabilizing structure (6) is used for balancing the heavy workpiece lifting and flipping equipment when the clamping structure (4) clamps the workpiece. The stabilizing structure (6) includes a counterweight block (603) fixedly connected to the supporting base plate (101), and a second guide plate (604) is fixedly provided on the counterweight block (603). A slide rail (602) is fixedly provided on the side of the second guide plate (604) close to the clamping jaw rotating structure (3), and a sliding block (601) adapted to the slide rail (602) is fixedly provided on the clamping jaw rotating structure (3).

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