Large-size annular workpiece hoisting and transferring device

Abstract

The utility model relates to a hoisting and transferring device for a large-size annular workpiece, which is used for hoisting and transferring the annular workpiece and comprises a plurality of clamping jaw components and traction ropes connected with the clamping jaw components in one-to-one correspondence, the traction ropes are connected between the clamping jaw components and a crane, and each clamping jaw component comprises a bottom plate, an outer baffle and a limiting plate. The outer baffle and the limiting plate are parallel and distributed at intervals, the outer baffle is fixedly connected to the bottom plate, the limiting plate is connected with the bottom plate through an adjusting assembly, and the limiting plate can move in the direction close to or away from the outer baffle. The large-size annular workpiece hoisting and transferring device is stable and reliable in clamping structure and more stable and safer in transferring.

Description

Technical Field

[0001] The utility model relates to a lifting device, in particular to a lifting and transferring device for large-size annular workpieces. Background Art

[0002] In the field of mechanical manufacturing, the processing and transfer of large-size workpieces are more difficult and challenging than those of small-size workpieces. Especially in terms of transfer, due to their large volume and weight, ordinary transfer devices cannot be used. Generally, a crane is needed for lifting. Multiple traction ropes are connected below the crane, and the bottom ends of the traction ropes are connected with clamping claws. When it is necessary to transfer a large-size annular workpiece, the crane first moves the traction ropes and the clamping claws to the corresponding positions of the workpiece, and then the staff manually pulls the clamping claws to make them clamped at the corresponding positions of the annular workpiece. And in order to prevent the workpiece from tilting during the transfer process, multiple clamping claws need to be evenly distributed along the circumferential direction of the workpiece to ensure the balance of the workpiece during transfer. During this process, in order to adjust the position, the staff needs to perform manual identification and adjust the position of the clamping claws multiple times. This not only wastes time and reduces the transfer efficiency, but also the manual judgment of the position deviation is relatively large. Once the workpiece tilts or even drops during the transfer process, it will cause a large safety hazard, and the damage caused by the dropping of the workpiece also affects the quality of the finished product. To solve the above problems, it is necessary to further improve the lifting device of the workpiece. Content of the Utility Model

[0003] In order to overcome the deficiencies of the prior art, the purpose of the utility model is to provide a lifting and transferring device for large-size annular workpieces with a stable and reliable clamping structure and more stable and safe transfer.

[0004] To solve the above problems, the technical solutions adopted by the utility model are as follows:

[0005] A lifting and transferring device for large-size annular workpieces, which is used for lifting and transferring annular workpieces, includes a plurality of clamping claw assemblies and traction ropes connected to the clamping claw assemblies one by one. The traction ropes are connected between the clamping claw assemblies and the crane. The clamping claw assembly includes a bottom plate, an outer baffle and a limiting plate. The outer baffle and the limiting plate are parallel and spaced apart. The outer baffle is fixedly connected to the bottom plate, and the limiting plate is connected to the bottom plate through an adjusting assembly. The limiting plate can move in a direction close to or away from the outer baffle.

[0006] Furthermore, the adjusting assembly includes a moving rod, a connecting plate and a driving rod. An installation seat is arranged on the bottom plate. The driving rod is threadedly connected to the installation seat. One end of the connecting plate is axially relatively fixed and circumferentially rotatable relative to the driving rod, and the other end is fixedly connected to the moving rod. The moving rod is fixedly connected to the limiting plate.

[0007] Further, a through hole is provided at the end of the connecting plate, the inner diameter of the through hole is larger than the outer diameter of the driving rod, and limit nuts are threadedly connected on both sides of the connecting plate on the driving rod.

[0008] Further, a support plate is fixedly connected to one end of the bottom plate close to the limit plate, a through hole is provided on the support plate, and the moving rod is slidably sleeved in the through hole.

[0009] Further, positioning rings are connected to the plurality of traction ropes, a plurality of through rings are evenly spaced along the circumferential direction on the positioning ring, the through rings correspond to the traction ropes one by one, the traction ropes pass through the corresponding through rings and then are connected to the claw assembly, and one of the traction ropes is fixedly connected to the through ring.

[0010] Further, a retaining ring is formed by extending the end of the driving rod close to the limit plate outward along the circumferential direction, and a knob is provided at the other end of the driving rod.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows: In the present utility model, the clamping and fixing or loosening of the annular workpiece is realized through the movable limit plate, the connection reliability between the claw assembly and the annular workpiece is improved, the transfer is more stable and safe, the lifting efficiency is higher, and the operation is simple and efficient. Description of the Drawings

[0012] Figure 1 It is a top view of a lifting and transferring device for large-sized annular workpieces of the present utility model;

[0013] Figure 2 It is Figure 1 a cross-sectional view taken along the A-A direction in

[0014] Figure 3 It is a perspective view of the claw assembly in a lifting and transferring device for large-sized annular workpieces of the present utility model;

[0015] Figure 4 It is a front view of the claw assembly in a lifting and transferring device for large-sized annular workpieces of the present utility model;

[0016] Among them, 1. Annular workpiece; 2. Claw assembly; 21. Bottom plate; 211. Mounting seat; 22. Support plate; 23. Outer baffle; 24. Limit plate; 25. Moving rod; 26. Connecting plate; 27. Driving rod; 271. Retaining ring; 272. Limit nut; 273. Knob; 28. Connecting ring; 3. Traction rope; 4. Positioning ring; 41. Through ring. Detailed Description of the Embodiment

[0017] The present utility model will be further described in detail below in conjunction with the drawings and specific embodiments.

[0018] It should be noted that in the description of the technical solution of the present utility model, in order to clearly describe some orientation terms used for the technical features of the present utility model, such as "front", "rear", "upper", "lower", "top", "bottom", "inner", "outer", etc., are all in accordance with the orientation of the drawings of the present utility model.

[0019] Embodiment

[0020] As Figure 1 and Figure 2 As shown, a lifting and transferring device for large-sized annular workpieces in this embodiment is used to lift and transfer the annular workpiece 1, especially the circular annular workpiece. The lifting and transferring device includes a plurality of claw assemblies 2 and traction ropes 3 connected to the claw assemblies 2 one by one. Specifically, there are three claw assemblies 2 and traction ropes 3 in this embodiment. Each traction rope 3 is connected between the corresponding claw assembly 2 and the overhead crane. The claw assembly 2 includes a bottom plate 21, an outer baffle 23 and a limiting plate 24. The outer baffle 23 and the limiting plate 24 are parallel and spaced apart. The outer baffle 23 is fixedly connected to the bottom plate 21. The limiting plate 24 is connected to the bottom plate 21 through an adjusting assembly. The limiting plate 24 can move in a direction close to or away from the outer baffle 23. A connecting ring 28 is fixedly connected to the top of the outer baffle 23. The traction rope 3 is fixedly connected to the connecting ring 28.

[0021] In this embodiment, the adjusting assembly includes a moving rod 25, a connecting plate 26 and a driving rod 27. An installation seat 211 is provided on the bottom plate 21. The driving rod 27 is threadedly connected to the installation seat 211. One end of the connecting plate 26 is axially relatively fixed and circumferentially rotatable relative to the driving rod 27, and the other end is fixedly connected to the moving rod 25. The moving rod 25 is fixedly connected to the limiting plate 24. The axes of the moving rod 25 and the driving rod 27 are parallel to each other.

[0022] Specifically, a through hole is provided at the end of the connecting plate 26, and the inner diameter of the through hole is larger than the outer diameter of the driving rod 27 to facilitate the free rotation of the driving rod 27 in the through hole. Limiting nuts 272 are threadedly connected to both sides of the driving rod 27 where the connecting plate 26 is located. When the end of the connecting plate 26 is sleeved on the driving rod 27, the end of the connecting plate 26 is limited by the limiting nuts 272 on both sides, so that the connecting plate 26 is axially fixed relative to the driving rod 27.

[0023] In order to improve the stability of the overall structure, in this embodiment, a support plate 22 is fixedly connected to one end of the bottom plate 21 close to the limiting plate 24. A through hole is provided on the support plate 22. The moving rod 25 is slidably sleeved in the through hole. With this structural design, the moving rod 25 can be supported and guided.

[0024] Since the overhead crane is generally installed on the top of the factory building, the length of the traction rope 3 is relatively long. In order to prevent the traction rope 3 from swinging around during the movement, the present embodiment is connected with a positioning ring 4 on the three traction ropes 3. The positioning ring 4 is a circular ring structure. Three loops 41 are evenly spaced along the circumference on the positioning ring 4. Specifically, the loops 41 correspond to the traction ropes 3 one by one. The traction ropes 3 are connected to the claw assembly 2 after passing through the corresponding loops 41, and one of the traction ropes 3 is fixedly connected to the loops 41. This structural design can not only be used to limit the traction rope 3 to prevent it from swinging significantly, but also can be used as a reference for positioning. When the staff pulls the claw assembly 2 to clamp the annular workpiece, the clamping position of the claw assembly 2 can be preliminarily located through the position of the loops 41 corresponding to the traction rope 3, thereby improving the lifting efficiency.

[0025] The end of the driving rod 27 near the limiting plate 24 extends outward along the circumferential direction to form a retaining ring 271, which is used to prevent the connecting plate 26 and the limiting nut 272 from moving too far. The other end of the driving rod 27 is provided with a knob 273, which is convenient for the staff to hold and control the rotation of the driving rod 27.

[0026] When in use, the staff first determines the position of the three claw assemblies 2. After determining, the claw assembly 2 is placed at the bottom of the side wall of the annular workpiece, so that the bottom plate 21 is located at the bottom of the side wall of the annular workpiece, and the outer baffle plate 23 and the limit plate 24 are respectively located on the inner and outer sides of the side wall of the annular workpiece, and then the knob 273 is manually rotated to drive the drive rod 27 to rotate. The drive rod 27 will cause axial displacement while rotating, and then drive the limit plate 24 to move in the direction close to the side wall of the annular workpiece until the side wall of the annular workpiece is clamped between the limit plate 24 and the outer baffle plate 23, so that the position of the claw assembly 2 and the annular workpiece is relatively fixed. Repeat the above steps until the three claw assemblies 2 are all engaged with the annular workpiece, and then the crane can be started to transport the workpiece.

[0027] The utility model provides a large-size annular workpiece lifting and transporting device, which clamps or loosens the annular workpiece through a movable limit plate 24, improves the connection reliability between the claw assembly 2 and the annular workpiece, makes the transport more stable and safe, has higher lifting efficiency, and is simple and efficient to operate.

[0028] For those skilled in the art, various other corresponding changes and deformations can be made according to the technical solutions and concepts described above, and all of these changes and deformations should fall within the protection scope of the new claims of the present utility model.

Claims

1. A large-size annular workpiece lifting and transporting device, used for lifting and transporting annular workpieces (1), characterized in that: The invention comprises a plurality of claw assemblies (2) and traction ropes (3) connected to the claw assemblies (2) in a one-to-one correspondence, wherein the traction ropes (3) are connected between the claw assemblies (2) and the overhead crane, and the claw assemblies (2) comprise a bottom plate (21), an outer baffle plate (23) and a limit plate (24), wherein the outer baffle plate (23) and the limit plate (24) are parallel and spaced apart, the outer baffle plate (23) is fixedly connected to the bottom plate (21), the limit plate (24) is connected to the bottom plate (21) via an adjustment assembly, and the limit plate (24) can move in a direction approaching or away from the outer baffle plate (23).

2. A large-size annular workpiece lifting and transporting device according to claim 1, characterized in that: The adjustment assembly comprises a moving rod (25), a connecting plate (26) and a driving rod (27); a mounting seat (211) is provided on the bottom plate (21); the driving rod (27) is threadedly connected to the mounting seat (211); one end of the connecting plate (26) is relatively fixed in the axial direction and relatively rotatable in the circumferential direction on the driving rod (27); the other end is fixedly connected to the moving rod (25); and the moving rod (25) is fixedly connected to the limiting plate (24).

3. A large-size annular workpiece lifting and transporting device according to claim 2, characterized in that: A through hole is formed at the end of the connecting plate (26), the inner diameter of the through hole being larger than the outer diameter of the driving rod (27), and the driving rod (27) is threadedly connected with limit nuts (272) on both sides of the connecting plate (26).

4. A large-size annular workpiece lifting and transporting device according to claim 3, characterized in that: A support plate (22) is fixedly connected to one end of the bottom plate (21) close to the limiting plate (24), and a through hole is provided on the support plate (22), and the moving rod (25) is slidably sleeved in the through hole.

5. The large-size annular workpiece lifting and transporting device according to claim 1 is characterized in that: A plurality of the traction ropes (3) are connected to positioning rings (4), and a plurality of loops (41) are evenly spaced along the circumference of the positioning rings (4). The loops (41) correspond to the traction ropes (3) one by one. The traction ropes (3) are connected to the claw assembly (2) after passing through the corresponding loops (41), and one of the traction ropes (3) is fixedly connected to the loop (41).

6. A large-size annular workpiece lifting and transporting device according to claim 2, characterized in that: One end of the driving rod (27) close to the limiting plate (24) extends outward along the circumferential direction to form a retaining ring (271), and the other end of the driving rod (27) is provided with a knob (273).

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