Hydraulic holding device

Abstract

The utility model relates to the technical field of chemical engineering, in particular to a hydraulic holding device. The device comprises a shell, a clamping structure is arranged on the inner side of the shell, an adjusting structure is arranged on the inner side of the clamping structure, and a connecting structure is arranged on one side of the clamping structure. According to the hydraulic holding device provided by the utility model, through the design of the clamping structure and the connecting structure, a more stable triangular supporting structure is formed when the device is used for clamping, so that the clamping stability is greatly improved, and due to the design, when the clamping jaw is used for clamping parts of shafts, pipes or other shapes, the clamping stability is greatly improved. According to the three-finger clamping jaw, clamping force can be distributed more evenly, shaking and sliding of parts are reduced, compared with a two-finger clamping jaw and a three-finger clamping jaw, the three-finger clamping jaw can adapt to parts of different shapes and sizes more flexibly, and the three-finger clamping jaw can achieve stable clamping by adjusting the positions and angles of the three clamping jaw bodies regardless of regular cubes, cylinders or irregular special-shaped parts.

Description

TECHNICAL FIELD

[0001] The utility model relates to a chemical industry technical field especially relates to a hydraulic embrace tightly device. BACKGROUND

[0002] In the overhaul of coal chemical equipment, hydraulic clamping technology as a key means plays an important role in the background technology. The coal chemical environment is complex and changeable, and the equipment is large in size and complex in structure, which puts high requirements on clamping and fixing during the overhaul process. Hydraulic clamping technology, with its powerful clamping force and precise control, has become the preferred solution for coal chemical equipment overhaul. This technology provides stable and continuous clamping force through the hydraulic system, which can ensure the stability of the equipment during the overhaul process and effectively avoid equipment damage or accidents caused by vibration or external force. At the same time, hydraulic clamping technology is also characterized by simple operation and rapid response, which can significantly improve the efficiency of the overhaul and reduce the labor intensity, providing a strong guarantee for the safe operation and efficient overhaul of coal chemical equipment. Therefore, in the field of coal chemical equipment overhaul, hydraulic clamping technology has been widely used and continuously developed.

[0003] For example, Chinese utility model patent (CN220330421U) discloses a clamping device for chemical equipment production, which solves the following problems: in the existing chemical equipment production process, most of the clamping devices are not used to fix the parts to be welded, but are directly pressed by manual labor, which may cause displacement between the parts during welding, resulting in deviation and affecting the welding effect. Therefore, a clamping device for chemical equipment production is proposed to solve the above problems.

[0004] The device includes a bottom plate, the top end of the bottom plate is fixedly connected with a base, the top end of the base is fixedly connected with two support pieces, two first hinged rods are hinged on the two support pieces, the utility model is provided with a driving assembly, a first clamping head and a second clamping head, the driving assembly is started, the two first sector gears and the two second sector gears are driven to rotate by the driving assembly, the first sector gear rotates counterclockwise, the second sector gear rotates clockwise, the first hinged rod rotates counterclockwise, the second hinged rod rotates clockwise, the first clamping head and the second clamping head open, the parts to be welded are placed between the first clamping head and the second clamping head, the driving assembly is used to close the first clamping head and the second clamping head to clamp the parts to be welded, which ensures that the parts are fixed during welding and ensures the welding effect compared with the prior art.

[0005] When the above technology is used, it is found that the following technical problems exist in the prior art: the clamping jaws of the device cannot be accurately adjusted according to the size of shafts and pipes, thereby causing deviation in the clamping process, affecting the machining precision and assembly quality of the parts, and the device has only two clamping jaws, which cannot provide sufficient stability when clamping the workpiece, especially when processing larger, heavier or irregular-shaped workpieces, the two clamping jaws can not keep the workpiece stable during machining or transportation, causing the workpiece to shake, slide or even fall off. Therefore, we design a hydraulic clamping device to provide another technical solution to the above technical problems. Practical new type content

[0006] Therefore, it is necessary to provide a hydraulic clamping device to solve the problems raised in the background art in view of the above technical problems.

[0007] In order to solve the above technical problems, the utility model adopts the following technical scheme:

[0008] A hydraulic clamping device, comprising a shell, a clamping structure is arranged on the inner side of the shell, an adjusting structure is arranged on the inner side of the clamping structure, and a connecting structure is arranged on one side of the clamping structure.

[0009] As a preferred embodiment of the hydraulic clamping device provided by the utility model, the clamping structure comprises a hydraulic cylinder, a double-sided rack, a first gear, a second gear, a connecting rod, a fixed block and a clamping jaw, the inner side of the shell is fixed with the hydraulic cylinder, one side of the hydraulic cylinder is fixed with the double-sided rack, the two sides of the double-sided rack are both meshed with the first gear, the sides away from each other of the two first gears are respectively meshed with the second gear, the top and bottom of the two second gears are both fixed with the connecting rod, the sides close to each other of the two fixed blocks are fixed with the clamping jaw.

[0010] As a preferred embodiment of the hydraulic clamping device provided by the utility model, the first gear, the second gear and the connecting rod are all rotatably connected with the shell, and the double-sided rack is slidably connected with the shell.

[0011] As a preferred embodiment of the hydraulic clamping device provided by the utility model, the adjusting structure comprises a locking mechanism, a stabilizing mechanism and a pushing mechanism, the inner sides of the two clamping jaws are both provided with the pushing mechanism, the top of the two clamping jaws is both fixed with the locking mechanism, and the bottom of the two clamping jaws is both fixed with the stabilizing mechanism.

[0012] As a preferred embodiment of the hydraulic clamping device provided by the utility model, the locking mechanism comprises a recess block, a first motor, a worm and a worm wheel, the top of each of the two clamping jaws is fixed with a recess block, one side of each of the two recess blocks is fixed with a first motor, each of the two recess blocks is rotationally connected with a worm inside, the output end of each of the two first motors is fixed with a worm, one side of each of the two worms is meshingly connected with a worm wheel.

[0013] As a preferred embodiment of the hydraulic clamping device provided by the utility model, the pushing mechanism comprises a rotating shaft, a cam, a second spring, a second sliding rod and a clamping tooth, the inner side of the clamping jaw is rotationally connected with a rotating shaft, the inner side of the rotating shaft is fixed with a cam, the cam is rotationally connected with the clamping jaw, the inner side of the clamping jaw is slidingly connected with a second sliding rod, one side of each of the two second sliding rods is fixed with a second spring, each of the two second springs is fixed with the clamping jaw, the other side of each of the two second springs is fixed with a clamping tooth, and the clamping tooth is abuttingly connected with the cam.

[0014] As a preferred embodiment of the hydraulic clamping device provided by the utility model, the stabilizing mechanism comprises a limiting disc, a first sliding rod, a limiting rubber, an electromagnet and a first spring, the bottom of the rotating shaft is fixed with a limiting disc, the inner side of the limiting disc deviating from the side of the center is slidingly connected with a first sliding rod, the top of the first sliding rod is fixed with a limiting rubber, the bottom of the first sliding rod is fixed with an electromagnet, the outer side of the first sliding rod is sleevedly connected with a first spring, the upper side of the first spring is fixed with the limiting disc, and the bottom of the first spring is fixed with the electromagnet.

[0015] As a preferred embodiment of the hydraulic clamping device provided by the utility model, the connecting structure comprises a connecting plate, a second motor, a first bevel gear, a second bevel gear and a screw rod, one side of the double-sided rack near the midpoint is rotationally connected with a screw rod, one side of the double-sided rack deviating from the side of the center is fixed with a connecting plate, one end of the connecting plate is fixed with a second motor, the output end of the second motor is fixed with a first bevel gear, one side of the outer side of the screw rod is fixed with a second bevel gear, and the second bevel gear is meshingly connected with the first bevel gear.

[0016] As a preferred embodiment of the hydraulic clamping device provided by the utility model, the connecting structure further comprises a threaded sleeve, a clamping block, a sliding block and a third sliding rod, the outer side of the screw rod is threadedly connected with a threaded sleeve, one side of the threaded sleeve is fixed with a clamping block, one end of the threaded sleeve is fixed with a sliding block, one side of the connecting plate is fixed with a third sliding rod, and the third sliding rod is slidingly connected with the sliding block.

[0017] It can be seen without doubt that the above technical solutions of the present application can certainly solve the technical problems to be solved by the present application.

[0018] Meanwhile, through the above technical scheme, the hydraulic clamping device has at least the following beneficial effects:

[0019] The hydraulic clamping device provided by the utility model has the following beneficial effects: the device forms a more stable triangular supporting structure when clamping, thereby greatly improving the stability of clamping; the design enables the clamping jaw to more evenly distribute clamping force when clamping shafts, pipes or other shaped parts, reduces the shaking and sliding of the parts, and compared with two-finger clamping jaws, three-finger clamping jaws can more flexibly adapt to parts of different shapes and sizes, whether regular cubes, cylinders or irregular special-shaped parts, the three-finger clamping jaw can realize stable clamping by adjusting the positions and angles of the three clamping jaws;

[0020] The device can flexibly cope with workpieces of various shapes and sizes, including irregularly shaped objects, which means that it can ensure perfect matching of clamping force and workpiece shape in different chemical production scenes and process requirements, thereby realizing accurate clamping, which helps to improve machining precision and product quality, reduces errors and defective rates caused by unstable clamping, and greatly improves the versatility and flexibility of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0022] Figure 1 It is the overall structure schematic view of the hydraulic clamping device of the utility model;

[0023] Figure 2 It is the side view of the hydraulic clamping device of the utility model;

[0024] Figure 3 It is the sectional view of the shell of the hydraulic clamping device of the utility model;

[0025] Figure 4 It is the connection schematic view of the double-sided rack and the hydraulic cylinder of the hydraulic clamping device of the utility model;

[0026] Figure 5 It is the connection schematic view of the double-sided rack and the first gear of the hydraulic clamping device of the utility model;

[0027] Figure 6 It is the connection schematic view of the first bevel gear and the second bevel gear of the hydraulic clamping device of the utility model;

[0028] Figure 7 It is a section view of the clamping jaw of the hydraulic clamping device of the utility model;

[0029] Figure 8 It is a connection schematic view of the rotating shaft and the cam of the hydraulic clamping device of the utility model;

[0030] Figure 9 It is a connection schematic view of the second sliding rod and the clamping tooth of the hydraulic clamping device of the utility model;

[0031] Figure 10 It is a connection schematic view of the electromagnet and the first spring of the hydraulic clamping device of the utility model.

[0032] In the figure: 1, shell; 2, hydraulic cylinder; 3, double-sided rack; 4, first gear; 5, second gear; 6, connecting rod; 7, fixed block; 8, clamping jaw; 9, concave block; 10, first motor; 11, worm; 12, worm gear; 13, rotating shaft; 14, cam; 15, limiting disc; 16, first sliding rod; 17, limiting rubber; 18, electromagnet; 19, first spring; 20, second spring; 21, second sliding rod; 22, clamping tooth; 23, connecting plate; 24, second motor; 25, first bevel gear; 26, second bevel gear; 27, screw rod; 28, screw sleeve; 29, clamping block; 30, sliding block; 31, third sliding rod. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the utility model is further described in detail below in combination with the drawings and examples.It should be understood that the specific examples described herein are only used to explain the utility model and not used to limit the utility model.

[0034] As described in the background, the clamping jaw of the device cannot be accurately adjusted according to the size of shafts and tubes, which leads to deviation in the clamping process, affecting the machining precision and assembly quality of the parts, and the device has only two clamping jaws, which cannot provide sufficient stability when clamping workpieces, especially when processing large, heavy or irregular-shaped workpieces, the two clamping jaws may not be able to keep the workpiece stable during machining or transportation, resulting in workpiece shaking, sliding or even falling off.

[0035] In order to solve this technical problem, the utility model provides a hydraulic clamping device.

[0036] Specifically, please refer to Figures 1-10 A hydraulic clamping device specifically comprises: a shell 1, the inner side of the shell 1 is provided with a clamping structure, the inner side of the clamping structure is provided with an adjusting structure, and one side of the clamping structure is provided with a connecting structure.

[0037] The utility model provides a kind of hydraulic clamping device, device is designed by clamping structure and connecting structure, so that device forms more stable triangular support structure when clamping, to greatly improve the stability of clamping, this design makes that jaw can be more evenly distributed clamping force when clamping shaft, pipe or other shape parts, reduce the shaking and sliding of part, compared to two finger jaws, three finger jaws can more flexibly adapt to different shape and size parts, whether regular cube, cylinder, or irregular special-shaped parts, three finger jaws can realize stable clamping by adjusting the position and angle of three jaws.

[0038] Device is designed by adjusting structure, so that device can flexibly cope with various shapes and sizes of workpiece, including irregular shape object, which means that it can ensure that clamping force and workpiece shape are perfectly matched when different chemical production scenes and process requirements, to realize accurate clamping, which helps to improve machining precision and product quality, reduce error and defective rate caused by unstable clamping, greatly improve the versatility and flexibility of equipment.

[0039] It should be noted that the embodiments in the utility model and the features and technical solutions in the embodiments can be combined with each other without conflict.

[0040] It should be noted that: similar labels and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0041] Reference Figures 1-10 A kind of hydraulic clamping device, including shell 1, the inner side of shell 1 is provided with clamping structure, the inner side of clamping structure is provided with adjusting structure, one side of clamping structure is provided with connecting structure.

[0042] Clamping structure includes hydraulic cylinder 2, double-sided rack 3, first gear 4, second gear 5, connecting rod 6, fixed block 7 and jaw 8, the inner side of shell 1 is fixed with hydraulic cylinder 2, one side of hydraulic cylinder 2 is fixed with double-sided rack 3, both sides of double-sided rack 3 are engaged and connected with first gear 4, the side of two first gears 4 away from each other is engaged and connected with second gear 5 respectively, the top and bottom of two second gears 5 are fixed with connecting rod 6, the side of two connecting rods 6 close to each other is fixed with fixed block 7, the side of two fixed blocks 7 close to each other is fixed with jaw 8, so that device can clamp workpiece.

[0043] First gear 4, second gear 5, connecting rod 6 are rotationally connected with shell 1, double-sided rack 3 is slidingly connected with shell 1.

[0044] The adjusting structure comprises a locking mechanism, a stabilizing mechanism and a pushing mechanism, the inner side of each of the two clamping jaws 8 is provided with the pushing mechanism, the top of each of the two clamping jaws 8 is fixed with the locking mechanism, and the bottom of each of the two clamping jaws 8 is fixed with the stabilizing mechanism, thereby enhancing the flexibility of the device.

[0045] The locking mechanism comprises a recess block 9, a first motor 10, a worm 11 and a worm wheel 12, the top of each of the two clamping jaws 8 is fixed with the recess block 9, one side of each of the two recess blocks 9 is fixed with the first motor 10, the inner side of each of the two recess blocks 9 is rotationally connected with the worm 11, the output end of each of the two first motors 10 is fixed with the worm 11, and one side of each of the two worms 11 is meshingly connected with the worm wheel 12, so that the locking mechanism can drive the rotating shaft 13 to rotate.

[0046] The pushing mechanism comprises a rotating shaft 13, a cam 14, a second spring 20, a second sliding rod 21 and a clamping tooth 22, the inner side of the clamping jaw 8 is rotationally connected with the rotating shaft 13, the inner side of the rotating shaft 13 is fixed with the cam 14, the cam 14 is rotationally connected with the clamping jaw 8, the inner side of the clamping jaw 8 is slidingly connected with the second sliding rod 21, one side of each of the two second sliding rods 21 is fixed with the second spring 20, each of the two second springs 20 is fixed with the clamping jaw 8, the other side of each of the two second springs 20 is fixed with the clamping tooth 22, and the clamping tooth 22 is abuttingly connected with the cam 14, so that the pushing mechanism can adjust the distance between the two clamping teeth 22.

[0047] The stabilizing mechanism comprises a limiting disc 15, a first sliding rod 16, a limiting rubber 17, an electromagnet 18 and a first spring 19, the bottom of the rotating shaft 13 is fixed with the limiting disc 15, the inner side of the limiting disc 15 deviating from the center is slidingly connected with the first sliding rod 16, the top of the first sliding rod 16 is fixed with the limiting rubber 17, the bottom of the first sliding rod 16 is fixed with the electromagnet 18, the outer side of the first sliding rod 16 is sleevedly connected with the first spring 19, the upper side of the first spring 19 is fixed with the limiting disc 15, and the bottom of the first spring 19 is fixed with the electromagnet 18, so that the device can prevent the rotating shaft 13 from rotating.

[0048] The connecting structure comprises a connecting plate 23, a second motor 24, a first bevel gear 25, a second bevel gear 26, a screw rod 27, a screw sleeve 28, a clamping block 29, a sliding block 30 and a third sliding rod 31, one side of the double-sided rack 3 near the midpoint is rotationally connected with the screw rod 27, one side of the double-sided rack 3 deviating from the center is fixedly connected with the connecting plate 23, one end of the connecting plate 23 is fixedly connected with the second motor 24, the output end of the second motor 24 is fixedly connected with the first bevel gear 25, one side of the outer side of the screw rod 27 is fixedly connected with the second bevel gear 26, the second bevel gear 26 is meshingly connected with the first bevel gear 25, the outer side of the screw rod 27 is threadedly connected with the screw sleeve 28, one side of the screw sleeve 28 is fixedly connected with the clamping block 29, one end of the screw sleeve 28 is fixedly connected with the sliding block 30, one side of the connecting plate 23 is fixedly connected with the third sliding rod 31, and the third sliding rod 31 is slidingly connected with the sliding block 30, so that the connecting structure can assist in clamping the workpiece and the stability of the device is increased.

[0049] The material of the limiting disc 15 is iron, and other workpieces are subjected to demagnetization treatment, thereby guaranteeing the working scheme of the device.

[0050] The first motor 10 and the second motor 24 both have power-off self-locking capability, so that the stroke of the device can be locked and controlled.

[0051] The hydraulic clamping device provided by the utility model, through the design of the clamping structure and the connecting structure, forms a more stable triangular supporting structure when clamping, thereby greatly improving the stability of clamping, and this design enables the clamping jaw to more evenly distribute clamping force when clamping shafts, pipes or other shaped parts, reduces the shaking and sliding of the parts, and compared with two-finger clamping jaws, three-finger clamping jaws can more flexibly adapt to parts of different shapes and sizes, whether regular cubes, cylinders or irregular special-shaped parts, three-finger clamping jaws can realize stable clamping by adjusting the positions and angles of the three clamping jaws.

[0052] The device can flexibly cope with workpieces of various shapes and sizes, including irregularly shaped objects, which means that it can ensure perfect matching of clamping force and workpiece shape in different chemical production scenes and process requirements, thereby realizing precise clamping, which helps to improve machining precision and product quality, reduces errors and defective rates caused by unstable clamping, and greatly improves the versatility and flexibility of the equipment.

[0053] The use process of the hydraulic clamping device is as follows: when a user uses the device to clamp, first, the workpiece to be clamped is placed on one side of the two clamping jaws 8 close to each other, and then the hydraulic cylinder 2 is powered on, the output end of the hydraulic cylinder 2 drives the double-sided rack 3 to slide on the inside of the shell 1, since the two sides of the double-sided rack 3 are both meshed and connected with the first gear 4, the sliding of the double-sided rack 3 drives the two first gears 4 to rotate, and the two first gears 4 are respectively meshed and connected with the second gear 5 on the side far away from each other, the rotation of the two first gears 4 drives the two second gears 5 to rotate, the rotation of the two second gears 5 drives the two connecting rods 6 to rotate, the rotation of the two connecting rods 6 drives the two fixed blocks 7 and the clamping jaws 8 to be close to or far away from each other, and then the two clamping teeth 22 can be close to each other to clamp the workpiece, when clamping different workpieces, the size of different workpieces changes, the user powers on the first motor 10 to rotate, the output end of the first motor 10 drives the worm 11 to rotate, the side of the worm 11 is meshed and connected with the worm wheel 12, so that the rotation of the worm 11 drives the worm wheel 12 to rotate, the rotation of the worm wheel 12 drives the rotating shaft 13 to rotate, the rotation of the rotating shaft 13 can drive the cam 14 to rotate, and then the cam 14 can drive the clamping teeth 22 to move, so that the relative distance of the two clamping teeth 22 can be adjusted, so that the device can clamp pipes, rectangular pieces and even spheres of various sizes, and the device has the advantages of improving versatility and flexibility, reducing cost, improving machining precision and stability; after clamping is completed, the user powers on the electromagnet 18, after the electromagnet 18 generates magnetic force, the magnetic force can resist the elastic force of the first spring 19 and is adsorbed to the bottom of the limiting disc 15, so that the first sliding rod 16 slides on the inside of the limiting disc 15, and the limiting rubber 17 can be tightly attached to the bottom of the clamping jaw 8, effectively stabilizing the rotating shaft 13 from rotating by itself, and ensuring the stability of clamping, at this time, the user powers on the second motor 24 to rotate, the output end of the second motor 24 drives the first bevel gear 25 to rotate, since the side of the first bevel gear 25 is meshed and connected with the second bevel gear 26, the rotation of the first bevel gear 25 drives the second bevel gear 26 to rotate, and then drives the screw rod 27 to rotate, the outer side of the screw rod 27 is threadedly connected with the screw sleeve 28, so that the rotation of the screw rod 27 drives the screw sleeve 28 to move, and the clamping block 29 can be tightly attached to the clamped workpiece, and the device has the advantages of improving the stability and safety of clamping, improving the flexibility and adaptability of clamping, improving the machining precision and efficiency, enhancing the reliability and durability of the device, improving the user experience and operation convenience, and expanding the application field.

[0054] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection required by the present application is defined by the appended claims and their equivalents.

Claims

1. Hydraulic gripping device comprising a housing (1), characterized in that The inner side of the shell (1) is provided with clamping structure, the inner side of the clamping structure is provided with adjusting structure, one side of the clamping structure is provided with connecting structure, the clamping structure includes hydraulic cylinder (2), double-sided rack (3), first gear (4), second gear (5), connecting rod (6), fixed block (7) and jaw (8), the inner side of the shell (1) is fixed with hydraulic cylinder (2), one side of the hydraulic cylinder (2) is fixed with double-sided rack (3), both sides of the double-sided rack (3) are engaged with first gear (4), two first gears (4) are engaged with second gear (5) on the side away from each other, the top and bottom of two second gears (5) are fixed with connecting rod (6), two connecting rods (6) are fixed with fixed block (7) on the side close to each other, two fixed blocks (7) are fixed with jaw (8) on the side close to each other, the first gear (4), second gear (5), connecting rod (6) are rotatably connected with the shell (1), the double-sided rack (3) is slidably connected with the shell (1), the adjusting structure includes locking mechanism, stabilizing mechanism and pushing mechanism, the inner side of two jaw (8) is provided with pushing mechanism, the top of two jaw (8) is fixed with locking mechanism, the bottom of two jaw (8) is fixed with stabilizing mechanism, the locking mechanism includes recess block (9), first motor (10), worm (11) and worm wheel (12), the top of two jaw (8) is fixed with recess block (9), one side of two recess blocks (9) is fixed with first motor (10), the inner side of two recess blocks (9) is rotatably connected with worm (11), the output end of two first motors (10) is fixed with two worms (11) respectively, one side of two worms (11) is engaged with worm wheel (12), the pushing mechanism includes shaft (13), cam (14), second spring (20), second slide rod (21) and jaw tooth (22), the inner side of the jaw (8) is rotatably connected with the shaft (13), the inner side of the shaft (13) is fixed with the cam (14), the cam (14) is rotatably connected with the jaw (8), the inner side of the jaw (8) is slidably connected with the second slide rod (21), one side of two second slide rods (21) is fixed with second spring (20), two second springs (20) are fixed with the jaw (8), the other side of two second springs (20) is fixed with a jaw tooth (22), the jaw tooth (22) is connected with the cam (14), the stabilizing mechanism includes limit disc (15), first slide rod (16), limit rubber (17), electromagnet (18) and first spring (19), the bottom of the shaft (13) is fixed with the limit disc (15), the inner side of the limit disc (15) is slidably connected with the first slide rod (16) on the side deviating from the center, the top of the first slide rod (16) is fixed with the limit rubber (17), the bottom of the first slide rod (16) is fixed with the electromagnet (18),The outer side of the first slide rod (16) is connected with a first spring (19), the upper side of the first spring (19) is fixed with a limiting disc (15), the bottom of the first spring (19) is fixed with an electromagnet (18), the connecting structure comprises a connecting plate (23), a second motor (24), a first bevel gear (25), a second bevel gear (26) and a screw rod (27), one side of the double-sided rack (3) is rotationally connected with the screw rod (27) near the midpoint, one side of the double-sided rack (3) is fixed with the connecting plate (23) deviating from the center, one end of the connecting plate (23) is fixed with the second motor (24), the output end of the second motor (24) is fixed with the first bevel gear (25), one side of the outer side of the screw rod (27) is fixed with the second bevel gear (26), the second bevel gear (26) and the first bevel gear (25) are meshedly connected, the connecting structure further comprises a screw sleeve (28), a clamping block (29), a sliding block (30) and a third slide rod (31), the outer side of the screw rod (27) is threadedly connected with the screw sleeve (28), one side of the screw sleeve (28) is fixed with the clamping block (29), one end of the screw sleeve (28) is fixed with the sliding block (30), one side of the connecting plate (23) is fixed with the third slide rod (31), the third slide rod (31) and the sliding block (30) are slidably connected.

Images