Clamping device for shaft parts and hoisting equipment

Abstract

The utility model provides a clamping device and hoisting equipment for shaft parts, and relates to the technical field of hoisting of the shaft parts, the clamping device for the shaft parts comprises a clamping assembly and a fastening device, the clamping assembly comprises two clamping parts, each clamping part comprises an arc-shaped part and two groove parts, and the arc-shaped part and the two groove parts are arranged on the clamping assembly. The two arc-shaped parts are encircled to form a clamping part, and the clamping part is used for being arranged at the end part of a shaft part in a sleeving manner; the two ends, in the first direction, of the arc-shaped part are provided with the groove parts correspondingly, the two groove parts corresponding to the same end, in the first direction, of the clamping part define a clamping groove part, and the two clamping groove parts, in the two ends in the first direction, of the clamping part are used for being connected with the corresponding hanging rings in a clamped mode correspondingly. The fastening device is used for connecting the two clamping pieces; the second direction is perpendicular to the first direction. According to the utility model, the stability of the vertical hoisting operation of the shaft parts can be improved, and the heat treatment quality of the shaft parts is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of hoisting of shaft parts, and specifically, to a clamping device and a hoisting device for shaft parts. Background Art

[0002] For shaft parts such as rolling rolls, heat treatment is required in multiple stages during the manufacturing and processing to form finished products. Specifically, in the stage of finishing rolling rolls, the rough rolling rolls formed in the rough rolling roll stage need to be subjected to multiple heating and cooling cycles to control the material properties of the rolling rolls.

[0003] In the prior art, it is usually necessary to use a hoisting device to perform a vertical hoisting operation on a shaft part in a horizontal posture on the ground, and place the shaft part in a vertical posture in a heating device for heat treatment. Among them, the hoisting device mainly includes a hoisting main body, a steel wire rope, a lifting ring and a clamping device. The clamping device includes two bow-shaped clamps and two bolt structures. Through holes are respectively provided at both ends of each bow-shaped clamp. The two bow-shaped clamps are arranged oppositely to form a circular hoop structure and sleeved on one axial end of the shaft part. The two bolt structures respectively pass through two groups of the above-mentioned through holes corresponding to the radial two ends of the hoop structure; the two lifting rings are respectively sleeved on the radial two ends of the hoop structure, and each lifting ring is located between the bolt structure and the hoop structure. The two ends of the steel wire rope are respectively connected to the corresponding two lifting rings, and the hoisting main body is connected to the steel wire rope for performing a vertical hoisting operation on the shaft part through the steel wire rope and the lifting ring via the clamping device.

[0004] However, during the vertical hoisting process of the shaft part in a horizontal posture, since the bottom of the bow-shaped clamp at the lower part in the hoop structure has an arc-shaped outer wall and the distance from the bolt structure is relatively large, the lifting ring is likely to generate radial movement between the bolt structure and the arc-shaped outer wall of the hoop structure, resulting in the problem that the shaft part generates heating deformation due to not being in a vertical posture after hoisting. In other words, the hoisting of the shaft part is not stable, which affects the processing quality of the shaft part. Summary of the Utility Model

[0005] The problem solved by the utility model is how to avoid the inclination of the shaft part during the vertical hoisting process.

[0006] To solve the above problems, in a first aspect, the present utility model provides a clamping device for shaft parts, including a clamping assembly and a fastening device. The clamping assembly includes two clamping members, and each clamping member includes an arc portion and two groove portions. The two arc portions enclose to form a clamping portion for sleeving on the end of a shaft part. At both ends of the arc portion along a first direction, the groove portions are respectively provided. The two groove portions corresponding to the same end of the clamping portion along the first direction enclose a clamping groove portion. The two clamping groove portions at both ends of the clamping portion along the first direction are used to respectively clamp corresponding lifting rings. The fastening device is used to connect the two clamping members. A second direction is perpendicular to the first direction.

[0007] Optionally, the groove portion includes a first baffle, a connecting rod, and a second baffle. The end of the arc portion along the first direction is connected to the first baffle. The second baffle is arranged on the side of the first baffle away from the arc portion. Both ends of the connecting rod are respectively connected to the first baffle and the second baffle. A preset interval is provided between the first baffle and the second baffle, and the lifting ring is accommodated within the interval, and the lifting ring is sleeved on the connecting rod.

[0008] Optionally, the portion of the connecting rod facing the inner edge of the lifting ring has an arc surface.

[0009] Optionally, the size of the interval is greater than or equal to the size of the lifting ring along the first direction.

[0010] Optionally, the sizes of the first baffle and the second baffle respectively from the portion connected to the connecting rod to the edges of the first baffle and the second baffle are greater than the ring width of the lifting ring.

[0011] Optionally, the clamping member further includes two connecting portions, and the two connecting portions are respectively located at both ends of the clamping member along the first direction, and the connecting portion is connected to the second baffle of the corresponding groove portion. The fastening device includes two connecting structures, and the two connecting structures are respectively arranged at both ends of the clamping assembly along the first direction. The connecting portions of the two clamping members along the first direction are connected through the corresponding connecting structures.

[0012] Optionally, both of the two connecting structures include a connecting bolt and two nut members. The connecting bolt passes through the two connecting portions and the two nut members, and the two connecting portions are located between the two nut members.

[0013] Optionally, one of the connecting structures is a snap member or a bolt fastener, and the other connecting structure is a hinge member. One end of the two clamping members is rotatably connected through the hinge member, and the other end of the two clamping members is connected through the snap member or the bolt fastener.

[0014] Optionally, the second baffle includes two limiting plates, the connecting portion is respectively connected to the corresponding two limiting plates at the axial two ends of the clamping portion, and an avoidance opening is formed between the two limiting plates.

[0015] The beneficial effects of the clamping device for shaft parts of the present utility model are as follows: Before lifting the shaft part, the shaft part is placed horizontally on the ground or the working platform; the following method can be adopted to connect the clamping device with the shaft part. For example, the two clamping members in the separated state are arranged oppositely, and the two arc-shaped portions of the two clamping members are moved closer to the same end of the shaft part until the two arc-shaped portions of the two clamping members enclose to form a clamping portion. At the same time, at each end of the clamping assembly along the first direction, the two groove portions of the two clamping members along the second direction (such as the vertical direction) enclose a clamping groove portion. At this time, the clamping portion is sleeved on one axial end of the shaft part, and then the two clamping members can be connected and fixed through the fastening device so that the clamping portion holds the shaft part. Then, the two lifting rings are respectively sleeved on the two corresponding clamping groove portions at the two ends of the clamping assembly along the first direction to realize the connection between the clamping assembly and the two lifting rings of the lifting device; subsequently, the lifting main body of the lifting device can be connected to the two lifting rings through the steel wire rope, and the vertical lifting operation of the shaft part can be carried out.

[0016] Since the clamping device is connected to one end of the shaft part, during the lifting process of the shaft part, the shaft part can be converted from a horizontal posture to a vertical posture; since the two lifting rings are respectively sleeved on the two corresponding clamping groove portions in the clamping assembly, the position of the lifting ring at the corresponding position can be fixed through the clamping groove portion to prevent the lifting ring from generating radial movement along the first direction at the clamping groove portion, thereby improving the stability of the vertical lifting operation of the shaft part, correspondingly ensuring that the shaft part is in a vertical posture for heat treatment without tilting problems, and further ensuring the heat treatment quality of the shaft part.

[0017] In a second aspect, the present utility model provides a lifting device, including two lifting rings and the clamping device for shaft parts as described above.

[0018] Therefore, since the lifting device includes the clamping device for shaft parts, the lifting device at least has all the technical effects of the clamping device for shaft parts, which will not be elaborated here. Description of the Drawings

[0019] Figure 1 It is a schematic structural diagram of the clamping device in the prior art.

[0020] Figure 2 It is one of the schematic connection structures of the clamping device and the lifting ring in the embodiment of the present utility model.

[0021] Figure 3 It is a schematic structural diagram of the clamping member in the embodiment of the present utility model.

[0022] Figure 4 One of the schematic connection structures of the clamping device, the sling and the shaft part in the embodiment of the present utility model.

[0023] Figure 5 Another schematic connection structure of the clamping device, the sling and the shaft part in the embodiment of the present utility model.

[0024] Figure 6 Another schematic connection structure of the clamping device and the sling in the embodiment of the present utility model.

[0025] Figure 7 Another schematic connection structure of the clamping device and the sling in the embodiment of the present utility model.

[0026] Explanation of reference numerals:

[0027] 1'-sling; 2'-bow-shaped clamp; 3'-bolt structure;

[0028] 1 - sling; 2 - clamping member; 21 - arc portion; 22 - groove portion; 221 - first baffle; 222 - connecting rod; 223 - second baffle; 2231 - limiting plate; 23 - connecting portion; 3 - fastening device; 31 - connecting structure; 311 - connecting bolt; 312 - nut member; 32 - hinge member; 4 - shaft part. Detailed implementation manners

[0029] In order to make the above objects, features and advantages of the present utility model more obvious and understandable, the following detailed description will be given to the specific embodiments of the present utility model with reference to the accompanying drawings. Although some embodiments of the present utility model are shown in the drawings, it should be understood that the present utility model can be implemented in various forms and should not be construed as limited to the embodiments described herein. On the contrary, these embodiments are provided to more thoroughly and completely understand the present utility model. It should be understood that the drawings and embodiments of the present utility model are only for exemplary purposes and are not used to limit the protection scope of the present utility model.

[0030] The Z-axis in the drawings represents the vertical direction, that is, the up and down position, and the positive direction of the Z-axis represents the upper side, and the negative direction of the Z-axis represents the lower side; the X-axis in the drawings represents the horizontal direction and is specified as the left and right position, and the positive direction of the X-axis represents the right side, and the negative direction of the X-axis represents the left side. At the same time, it should be noted that the above-mentioned representation meanings of the Z-axis and the X-axis are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present utility model.

[0031] As used herein, the term "comprising" and its variations are open-ended, i.e., "including but not limited to"; the term "based on" means "at least partially based on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional embodiment". The relevant definitions of other terms will be given in the following description. It should be noted that the concepts such as "first" and "second" mentioned in the present utility model are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0032] It should be noted that the modification of "one" and "a plurality of" mentioned in the present utility model is illustrative rather than restrictive. Those skilled in the art should understand that unless otherwise clearly specified in the context, it should be understood as "one or more".

[0033] In the related art, for shaft parts such as rolling rolls, heat treatment is required in multiple stages during the manufacturing and processing to form the finished product. Specifically, in the rough rolling roll stage, after heat-treating the blank, it is necessary to perform preliminary pressing and shape it into the outer shape of the rolling roll; subsequently, in the finish rolling roll stage, it is necessary to perform multiple heating and cooling cycles on the rough rolling roll formed in the rough rolling roll stage to control the material properties of the rolling roll.

[0034] In the prior art, it is usually necessary to use a lifting device to perform a vertical lifting operation on a shaft part in a horizontal posture on the ground, and place the shaft part in a vertical posture in a heating device for heat treatment. Among them, the lifting device mainly includes a lifting main body, a steel wire rope, a lifting ring 1', and a clamping device. As shown in Figure 1 the clamping device includes two bow-shaped clamps 2' and two bolt structures 3'. Through holes are respectively provided at both ends of each bow-shaped clamp 2'. The two bow-shaped clamps 2' are arranged oppositely to form a circular hoop structure, and the hoop structure is sleeved on one axial end of the shaft part. The two bolt structures 3' respectively pass through two sets of the above-mentioned through holes corresponding to the two radial ends of the hoop structure along the shaft part; the two lifting rings 1' are respectively sleeved on the two radial ends of the hoop structure, and each lifting ring 1' is located between the bolt structure 3' and the hoop structure. The two ends of the steel wire rope are respectively connected to the corresponding two lifting rings 1', and the lifting main body is connected to the steel wire rope for performing a vertical lifting operation on the shaft part through the steel wire rope and the lifting ring 1' via the clamping device.

[0035] However, during the vertical lifting of shaft parts in a horizontal posture, since the bottom of the bow-shaped clamp 2' at the lower part of the hoop structure has an arc-shaped outer wall and the distance from the bolt structure 3' is relatively large, the lifting ring 1' is prone to radial movement between the bolt structure 3' and the arc-shaped outer wall of the hoop structure, resulting in the problem that the shaft parts are heated and deformed because they are not in a vertical posture after lifting. In other words, the lifting of the shaft parts is not stable, which affects the processing quality of the shaft parts.

[0036] In view of the problems existing in the above related technologies, the present embodiment provides a clamping device for shaft parts.

[0037] As Figure 2 shown, a clamping device for shaft parts provided by an embodiment of the present utility model includes a clamping assembly and a fastening device 3. The clamping assembly includes two clamping members 2. Each clamping member 2 includes an arc-shaped portion 21 and two groove portions 22. The two arc-shaped portions 21 enclose to form a clamping portion for sleeving on the end of a shaft part 4. The groove portions 22 are respectively arranged at both ends of the arc-shaped portion 21 along a first direction. The two groove portions 22 corresponding to the same end of the clamping portion along the first direction enclose a clamping groove portion. The two clamping groove portions at both ends of the clamping portion along the first direction are respectively used for clamping the corresponding lifting rings 1. The fastening device 3 is used to connect the two clamping members 2. The second direction is perpendicular to the first direction.

[0038] Specifically, the clamping assembly includes two clamping members 2, and the two clamping members 2 are arranged opposite to each other along the second direction. Each clamping member 2 includes an arc-shaped portion 21 and two groove portions 22, and one groove portion 22 is arranged at each end of the arc-shaped portion 21 along the first direction. Among them, the first direction is parallel to the Figure 2 X-axis direction in the coordinate system, and the second direction is parallel to the Figure 2 Z-axis direction in the coordinate system.

[0039] Among them, since one axial end of the shaft part includes a plurality of structural segments with different diameters connected in sequence, when the clamping portion formed by the two arc-shaped portions of the two clamping members is sleeved on one of the structural segments of the shaft part, during the subsequent vertical lifting process, the shaft part will not fall off the clamping device downward.

[0040] Among them, the arc-shaped portion 21 matches the radian of the axial side wall of the shaft part 4, so as to increase the connection area between the two and improve the socket stability of the clamping portion and the shaft part 4.

[0041] At each end of the clamping assembly along the first direction, the two groove portions 22 of the two clamping members 2 along the second direction can enclose a clamping groove portion. Therefore, the clamping assembly includes two clamping groove portions, and the two clamping groove portions are arranged at intervals along the first direction.

[0042] The fastening device 3 is used to fasten two clamping members 2 together after the two clamping members 2 are sleeved on the end of a shaft-like member 4.

[0043] In this embodiment, before lifting the shaft-like member 4, the shaft-like member 4 is placed horizontally on the ground or a working platform; the following method can be adopted to connect the clamping device to the shaft-like member 4. For example, two clamping members 2 in a separated state are arranged oppositely, and the two arc-shaped portions 21 of the two clamping members 2 are moved closer to the same end of the shaft-like member 4 until the two arc-shaped portions 21 of the two clamping members 2 enclose to form a clamping portion. At the same time, at each end of the clamping assembly along the first direction, the two groove portions 22 of the two clamping members 2 enclose to form a clamping groove portion. At this time, the clamping portion is sleeved on the axial end of the shaft-like member 4. Subsequently, the two clamping members 2 can be connected and fixed by the fastening device 3 so that the clamping portion holds the shaft-like member 4. Then, two lifting rings 1 are respectively sleeved on the two clamping groove portions corresponding to the two ends of the clamping assembly along the first direction to realize the connection between the clamping assembly and the two lifting rings 1 of the lifting equipment; subsequently, the lifting main body of the lifting equipment can be connected to the two lifting rings 1 through a steel wire rope, and then the shaft-like member 4 can be vertically lifted.

[0044] Since the clamping device is connected to one end of the shaft-like member 4, during the lifting process of the shaft-like member 4, the shaft-like member 4 can be converted from a horizontal posture to a vertical posture; since the two lifting rings 1 are respectively sleeved on the two corresponding clamping groove portions in the clamping assembly, the position of the lifting ring 1 at the corresponding position can be fixed through the clamping groove portion to prevent the lifting ring 1 from generating radial movement along the first direction at the clamping groove portion, thereby improving the smoothness of the lifting operation of the shaft-like member 4, and correspondingly ensuring that the shaft-like member 4 is heat-treated in a vertical posture without tilting problems, and further ensuring the heat treatment quality of the shaft-like member 4.

[0045] Optionally, as shown in Figure 3 and Figure 4 , the groove portion 22 can adopt the following structure. For example, the groove portion 22 includes a first baffle 221, a connecting rod 222, and a second baffle 223. The end of the arc-shaped portion 21 along the first direction is connected to the first baffle 221. The second baffle 223 is arranged on the side of the first baffle 221 away from the arc-shaped portion 21. The two ends of the connecting rod 222 are respectively connected to the first baffle 221 and the second baffle 223. A preset interval is provided between the first baffle 221 and the second baffle 223, and the interval is used to accommodate the lifting ring 1, and the lifting ring 1 is sleeved on the connecting rod 222.

[0046] Specifically, the end of the arc portion 21 along the first direction is fixedly connected to the first baffle 221, and the second baffle 223 is disposed on the side of the first baffle 221 away from the arc portion 21. The connecting rod 222 is disposed between the first baffle 221 and the second baffle 223, and both ends of the connecting rod 222 are respectively connected to the first baffle 221 and the second baffle 223.

[0047] The preset interval dimension between the first baffle 221 and the second baffle 223 matches the dimension of the connecting rod 222 along the first direction.

[0048] When the lifting ring 1 is sleeved on the groove portion 22, the lifting ring 1 is embedded in the interval, and the bottom of the lifting ring 1 is connected to the connecting rod 222 of the clamping member below.

[0049] The first baffle 221, the connecting rod 222, and the second baffle 223 can be integrally formed by welding to improve the mechanical strength of the groove portion 22; and the first baffle 221 of the groove portion 22 and the arc portion 21 can be integrally formed by welding to improve the mechanical strength of the entire clamping member 2.

[0050] Since each clamping member 2 includes two groove portions 22 and each groove portion 22 includes a connecting rod 222, the two clamping members 2 have four connecting rods 222.

[0051] In this alternative embodiment, by presetting an interval between the first baffle 221 and the second baffle 223, and the interval is used to accommodate the lifting ring 1, not only is the lifting ring 1 fixed in the interval between the first baffle 221 and the second baffle 223, so that the lifting ring 1 has no space to move around, but also the first baffle 221 and the second baffle 223 can block the lifting ring 1 from the first direction to prevent the lifting ring 1 from detaching from the groove portion 22 during the vertical lifting process, thereby improving the protection effect on the lifting ring 1 and further realizing the stable lifting operation of the shaft-like member 4.

[0052] Optionally, the portion of the connecting rod 222 facing the inner edge of the lifting ring 1 has an arc surface.

[0053] Specifically, when the lifting ring 1 is sleeved on the connecting rod 222 of the groove portion 22, the portion of the connecting rod 222 facing the inner edge of the lifting ring 1 has an arc surface, and the arc surface matches the radian of the inner edge of the lifting ring 1.

[0054] Among them, along the second direction, the upper surface of the connecting rod 222 of the groove portion 22 above is an arc surface, and the lower surface of the connecting rod 222 of the groove portion 22 below is an arc surface.

[0055] In this alternative embodiment, during the vertical lifting process of the shaft-like member 4, the shaft-like member 4 is converted from a horizontal posture to a vertical posture. At this time, the connecting rod 222 of each groove portion 22 will rotate around the first direction within the sling 1. Since the portion of the connecting rod 222 facing the inner edge of the sling 1 has an arc surface, when the sling 1 is sleeved outside the connecting rod 222 at the interval, the arc surface of the connecting rod 222 not only makes the rotation of the shaft-like member 4 from a horizontal posture to a vertical posture smoother, but also the arc surface of the connecting rod 222 can increase the contact area with the inner edge of the sling 1, correspondingly increasing the rotational stability of the clamping device relative to the sling 1.

[0056] In addition, the end surface of the connecting rod 222 along the first direction can be a semi-circular structure, so that when the two clamping members 2 are connected by the fastening device 3, along the second direction, the lower surface of the upper connecting rod 222 and the upper surface of the lower connecting rod 222 can be in close contact, correspondingly reducing the gap at the connection of the two clamping members 2, and further correspondingly improving the clamping stability of the clamping assembly formed by the two clamping members 2 on the shaft-like member 4.

[0057] Optionally, the size of the interval is greater than or equal to the size of the sling 1 along the first direction.

[0058] Specifically, the size of the interval being greater than the size of the sling 1 along the first direction means that the size of the interval is slightly greater than the size of the sling 1 along the first direction, so that the sling 1 can be smoothly embedded in the interval. The size of the interval being equal to the size of the sling 1 along the first direction means that after the sling 1 is embedded in the interval, there is no extra gap between the first baffle 221 and the second baffle 223 and the sling 1 along the first direction, further improving the blocking and protection effect of the first baffle 221 and the second baffle 223 on the sling 1.

[0059] Optionally, the dimensions of the first baffle 221 and the second baffle 223 from the portion connected to the connecting rod 222 to the edge portions of the first baffle 221 and the second baffle 223 are greater than the ring width of the sling 1.

[0060] Specifically, in the second direction, taking the clamping member 2 at the upper part as an example, the dimension between the part where the first baffle 221 is connected to the connecting rod 222 and the edge part (i.e., the top end) of the first baffle 221 can be understood as the dimension by which the first baffle 221 is higher than the connecting rod 222 is greater than the ring width of the lifting ring 1; the dimension between the part where the second baffle 223 is connected to the connecting rod 222 and the edge part (i.e., the top end) of the second baffle 223 can be understood as the dimension by which the second baffle 223 is higher than the connecting rod 222 is greater than the ring width of the lifting ring 1; similarly, the dimension by which the second baffle 223 is higher than the connecting rod 222 is greater than the ring width of the lifting ring 1; the ring width of the lifting ring 1 refers to the dimension between the outer edge and the inner edge of the lifting ring 1, and the ring width of the lifting ring 1 can be represented by Figure 4 the letter d in

[0061] In this optional embodiment, the dimensions of the first baffle 221 and the second baffle 223 from the part where they are connected to the connecting rod 222 to the part away from the connecting rod 222 are greater than the ring width of the lifting ring 1. When the lifting ring 1 is sleeved outside the connecting rod 222 at the interval, the entire bottom of the lifting ring 1 is within the interval. In other words, the bottom of the lifting ring 1 does not protrude from the first baffle 221 and the second baffle 223, so that the first baffle 221 and the second baffle 223 can effectively prevent the lifting ring 1 from detaching from the groove part 22.

[0062] Optionally, as shown in Figure 3 , the clamping member 2 further includes two connecting parts 23. The two connecting parts 23 are respectively located at both ends of the clamping member 2 along the first direction, and the connecting part 23 is connected to the second baffle 223 of the corresponding groove part 22; the fastening device 3 includes two connecting structures 31. The two connecting structures 31 are respectively arranged at both ends of the clamping assembly along the first direction, and the connecting parts 23 at both ends of the two clamping members 2 along the first direction are connected through the corresponding connecting structures 31.

[0063] Specifically, each clamping member 2 includes two connecting parts 23, and each connecting part 23 is located at the end of the clamping member 2 along the first direction. At each end of the clamping assembly along the first direction, the connecting part 23 is connected to the second baffle 223 of the corresponding groove part 22 so that the connecting part 23 and the groove part 22 form an integral structure; in addition, the connecting part 23 is also connected to the connecting rod 222 of the groove part 22 to increase the connection length between the connecting part 23 and the groove part 22, correspondingly improve the connection strength between the connecting part 23 and the groove part 22, correspondingly extend the service life of the clamping member 2, and also enable the vertical lifting operation of the shaft parts 4 of different weights.

[0064] Among them, the connecting portion 23 can be a block structure. The fastening device 3 includes two connecting structures 31, and the two connecting structures 31 are respectively arranged at both ends of the clamping assembly along the first direction. Specifically, among the two ends of the clamping assembly along the first direction, two connecting portions 23 arranged along the second direction are connected by one connecting structure 31, and among the other two ends of the clamping assembly along the first direction, two connecting portions 23 arranged along the second direction are connected by the other connecting structure 31.

[0065] In this alternative embodiment, by providing corresponding connecting portions 23 at each end of each clamping member 2 along the first direction, the connecting portion 23 is located on the side of the groove portion 22 away from the arc portion 21. The connecting portion 23 can be used as the part where two clamping members 2 arranged along the second direction are connected by the connecting structure 31. Thus, during the process of the connecting structure 31 connecting the two connecting portions 23 arranged along the second direction, the groove portion 22 will not interfere with the connection between the connecting structure 31 and the connecting portion 23, and the connecting structure 31 will not interfere with the subsequent action of the sling 1 sleeving on the groove portion 22, so as to correspondingly improve the connection convenience between the connecting structure 31 and the connecting portion 23 and the convenience of the sling 1 sleeving on the groove portion 22.

[0066] Optionally, as shown in Figure 6 both of the two connecting structures 31 include a connecting bolt 311 and two nut members 312. The connecting bolt 311 passes through the two connecting portions 23 and the two nut members 312, and the two connecting portions 23 are located between the two nut members 312.

[0067] Specifically, the two connecting structures 31 can connect different positions of the two clamping members 2 in the following manner. Specifically, the structures of the two connecting structures 31 are the same, that is, each connecting structure 31 includes a connecting bolt 311 and two nut members 312. Taking one end of the clamping assembly along the first direction, such as the right end, as an example for illustration, the two nut members 312 are respectively arranged at the upper and lower parts of the two connecting portions 23. The top end of the connecting bolt 311 is connected to the nut member 312 at the upper part, and the bottom of the connecting bolt 311 passes through the two connecting portions 23 and is connected to the nut member 312 at the lower part to realize the connection and fixation of the two clamping members 2.

[0068] In this alternative embodiment, since the structures of the two connecting structures 31 are the same, both including a connecting bolt 311 and two nut members 312. In other words, the two connecting structures 31 are both bolt fasteners. Thus, in cooperation with the two clamping members 2, not only the clamping and fixation of the shaft-like member 4 are realized, but also the distance between the two clamping members 2 can be adjusted by adjusting the positions of the two nut members 312 on each connecting bolt 311 on the connecting bolt 311, that is, adjusting the tightness of the nut members 312, so as to realize the lifting operation of shaft-like members 4 with different diameters.

[0069] Optionally, in combination with Figure 7 As shown, the structures of the two connecting structures are different. Specifically, one of the connecting structures 31 is a snap fastener or a bolt fastener, and the other connecting structure 31 is a hinge 32. One end of the two clamping members 2 is rotatably connected through the hinge 32, and the other ends of the two clamping members 2 are connected through the snap fastener or the bolt fastener.

[0070] Specifically, the hinge 32 can be a pivot structure or a pin shaft structure. Any hinge 32 that can achieve the rotation of one clamping member 2 relative to the other clamping member 2 is applicable to this technical solution and will not be specifically limited herein.

[0071] In combination with Figure 7 As shown, the two connecting portions 23 at the left ends of the two clamping members 2 are connected through the hinge 32, and the two connecting portions 23 at the right ends of the two clamping members 2 are connected through a bolt fastener (see Figure 7 shown) or a snap fastener.

[0072] In this optional embodiment, since one end of the two clamping members 2 is rotatably connected through the hinge 32, and the other ends of the two clamping members 2 are connected through a snap fastener or a bolt fastener, the disassembly and assembly convenience of the two clamping members 2 sleeved on one end of the shaft-like member 4 is improved.

[0073] Optionally, in combination with Figure 4 As shown, the second baffle 223 includes two limiting plates 2231. The connecting portion 23 is respectively connected to the corresponding two limiting plates 2231 at both axial ends of the clamping portion, and an avoidance opening is formed between the two limiting plates 2231.

[0074] Specifically, the axis of the clamping portion coincides with the axis of the shaft-like member 4. Since the connecting portion 23 is provided with the corresponding two limiting plates 2231 at intervals at both axial ends of the clamping portion, an avoidance opening is formed between the two limiting plates 2231 at this time. When the nut member 312 in the connecting structure 31 is sleeved on the connecting bolt 311, the avoidance opening can provide a tightening space for the nut member 312, so that the second baffle 223 will not interfere with the connection action of the connecting structure 31 for fastening the connecting portion 23 of the two clamping members 2, thereby improving the fastening efficiency of the connecting structure 31 for fastening the two clamping members 2.

[0075] A hoisting device provided by an embodiment of the present invention includes two lifting rings 1 and a clamping device for a shaft-like member as described in the above embodiment.

[0076] The hoisting device in this embodiment further includes a steel wire rope and a hoisting main body. The two ends of the steel wire rope are respectively connected to the corresponding two lifting rings 1, and the hoisting main body is connected to the steel wire rope, so as to vertically hoist the shaft-like member 4 through the hoisting main body, the steel wire rope, and the two lifting rings 1 via the clamping device.

[0077] Among them, the lifting main body can be an overhead crane, a truck crane, etc., and no specific limitation is made here.

[0078] The beneficial effects of the lifting device of this embodiment compared with the prior art are the same as those of the above-mentioned clamping device for shaft parts, and will not be elaborated here.

[0079] Although the present utility model is disclosed as above, the protection scope of the present utility model is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present utility model, and these changes and modifications will all fall within the protection scope of the present utility model.

Claims

1. A clamping device for shaft parts, characterized in that, It includes a clamping component and a fastening device (3). The clamping component includes two clamping members (2). Each clamping member (2) includes an arc portion (21) and two groove portions (22). The two arc portions (21) enclose to form a clamping portion for sleeving on the end of a shaft-like member (4). The groove portions (22) are respectively arranged at both ends of the arc portion (21) along a first direction. The two groove portions (22) corresponding to the same end of the clamping portion along the first direction enclose a clamping groove portion. The two clamping groove portions at both ends of the clamping portion along the first direction are respectively used for clamping corresponding lifting rings (1). The fastening device (3) is used to connect the two clamping members (2).

2. The clamping device for shaft parts according to claim 1, wherein The groove portion (22) includes a first baffle (221), a connecting rod (222) and a second baffle (223). The end of the arc portion (21) along the first direction is connected to the first baffle (221). The second baffle (223) is arranged on the side of the first baffle (221) away from the arc portion (21). Both ends of the connecting rod (222) are respectively connected to the first baffle (221) and the second baffle (223). A preset interval is provided between the first baffle (221) and the second baffle (223). The lifting ring (1) is accommodated within the interval and sleeved on the connecting rod (222).

3. The clamping device for shaft parts according to claim 2, characterized in that, The portion of the connecting rod (222) facing the inner edge of the lifting ring (1) has an arc surface.

4. The clamping device for shaft parts according to claim 2, characterized in that, The size of the interval is greater than or equal to the size of the lifting ring (1) along the first direction.

5. The clamping device for shaft parts according to claim 2, wherein The sizes of the first baffle (221) and the second baffle (223) from the portion connected to the connecting rod (222) to the edge portions of the first baffle (221) and the second baffle (223) are greater than the ring width of the lifting ring (1).

6. The clamping device for shaft parts according to any one of claims 2 to 5, characterized in that The clamping member (2) further includes two connecting portions (23). The two connecting portions (23) are respectively at both ends of the clamping member (2) along the first direction, and the connecting portion (23) is connected to the second baffle (223) of the corresponding groove portion (22). The fastening device (3) includes two connecting structures (31). The two connecting structures (31) are respectively arranged at both ends of the clamping component along the first direction. The connecting portions (23) at both ends of the two clamping members (2) along the first direction are respectively connected through the corresponding connecting structures (31).

7. The clamping device for shaft parts according to claim 6, characterized in that, Both of the two connecting structures (31) include a connecting bolt (311) and two nut members (312). The connecting bolt (311) passes through the two connecting portions (23) and the two nut members (312), and the two connecting portions (23) are located between the two nut members (312).

8. The clamping device for shaft parts according to claim 6, characterized in that, One of the connection structures (31) is a snap or a bolt fastener, and the other connection structure (31) is a hinge (32). One ends of the two clamping members (2) are rotatably connected by the hinge (32), and the other ends of the two clamping members (2) are connected by the snap or the bolt fastener.

9. The clamping device for shaft parts according to claim 6, characterized in that, The second baffle (223) includes two limiting plates (2231). The connecting portion (23) is respectively connected to the corresponding two limiting plates (2231) at the two axial ends of the clamping portion, and an avoidance opening is formed between the two limiting plates (2231).

10. A hoisting device, characterized in that, It includes two lifting rings (1) and the clamping device for shaft parts according to any one of claims 1 to 9.

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