Clamping device and spreader

Abstract

This application discloses a clamping device and a lifting fixture. The clamping device includes a lifting body and a clamping mechanism. The lifting body includes a main body and a sleeve for passing through a lifting hole for clamping a workpiece. The centerline of the sleeve hole is offset to one side of the sleeve. The clamping assembly includes a connecting shaft and a clamping member. The clamping member is located at the end of the sleeve away from the main body. The connecting shaft passes through the sleeve hole and is connected to the clamping member. The clamping member extends radially along the connecting shaft and includes a locking part and an unlocking part. The end of the connecting shaft away from the clamping member extends out of the main body and is connected to a locking assembly. The locking assembly is detachably connected to the main body. When detached from the main body, the locking assembly drives the connecting shaft to rotate, so that the locking part rotates to the upper side of the connecting shaft to lock the workpiece, and the unlocking part rotates to the upper side of the connecting shaft to unlock the workpiece, thereby improving the safety performance during lifting.

Description

Technical Field

[0001] This application belongs to the field of lifting device technology, specifically relating to a clamping device and lifting device. Background Technology

[0002] With the continuous advancement of technology and the rapid development of industrial automation, the construction machinery industry has ushered in unprecedented growth. At the same time, the assembly process of construction machinery is facing higher precision requirements and efficiency challenges. In the assembly process of construction machinery, hoisting operations, as a key link in the assembly process, directly affect overall production efficiency and the personal safety of operators through their safety and reliability.

[0003] Currently, the lifting tools commonly used in the industry are still mainly traditional hooks and wire ropes. Although these lifting tools are simple in structure and low in cost, they pose significant safety hazards in practical applications. Due to the lack of effective anti-disengagement devices, workpieces are prone to detaching from the hook during lifting due to shaking, collision, or improper operation, resulting in accidental fall and low safety performance. Utility Model Content

[0004] In view of the above-mentioned defects or deficiencies, this application provides a clamping device and lifting tool, which aims to solve the technical problem that the workpiece is easy to detach from the hook and the safety performance is low in existing lifting tools.

[0005] To achieve the above objectives, this application provides a clamping device, wherein the clamping device includes a lifting body and a clamping mechanism.

[0006] The hoisting body includes a main body and a sleeve for passing through a hoisting hole for clamping workpieces. The lower part of the main body is provided with a sleeve, and the upper part is used for hoisting connection. The center line of the sleeve hole of the sleeve is set off to one side of the sleeve. The clamping mechanism includes a clamping assembly and a locking assembly. The clamping assembly includes a connecting shaft and a clamping member. The clamping member is located at the end of the sleeve portion away from the main body portion. The connecting shaft passes through the sleeve hole and is connected to the clamping member. The clamping member extends radially along the connecting shaft and includes a locking part and an unlocking part. The end of the connecting shaft away from the clamping member extends out of the main body portion and is connected to the locking assembly. The locking assembly is detachably connected to the main body portion. The locking assembly is used to drive the connecting shaft to rotate when detached from the main body portion, so that the locking part rotates to the upper side of the connecting shaft to lock the clamped workpiece, and the unlocking part rotates to the upper side of the connecting shaft to unlock the clamped workpiece.

[0007] In this embodiment, the clamping member is provided with a connecting hole, the center line of the connecting hole is set off to one side of the clamping member, one end of the connecting shaft extending out of the main body is inserted into the connecting hole, and can form a locking part and an unlocking part. The distance between the outer periphery of the locking part and the center line of the connecting hole is equal to the distance between the lower edge of the sleeve part and the center line of the sleeve hole, and the distance between the outer periphery of the unlocking part and the center line of the connecting hole is equal to the distance between the upper edge of the sleeve part and the center line of the sleeve hole.

[0008] In this embodiment of the application, the locking assembly includes a rotary wrench and a locking member. The rotary wrench includes a connecting part and a wrench part connected together. The connecting part is sleeved on the end of the connecting shaft away from the clamping member. The connecting part and the main body are detachably connected by the locking member. The wrench part is inclined in the direction away from the main body in the direction from bottom to top.

[0009] In this embodiment of the application, the locking assembly further includes a connecting pin, which extends radially along the connecting shaft and passes through the connecting portion and the connecting shaft in sequence.

[0010] In this embodiment, there are two locking components, which are respectively located on the upper and lower sides of the connecting shaft. Each locking component includes a pressing head and a connecting rod connected to each other. The pressing head is used to abut against the side of the connecting part away from the main body, and the connecting rod is threadedly connected to the connecting part.

[0011] In this embodiment, the main body is provided with two positioning holes. The two positioning holes are respectively located on the upper and lower sides of the connecting shaft and on the same circumference with the axis of the connecting shaft as the center line. The connecting rod of the two locking members is provided with a positioning structure at the end away from the corresponding pressing head. The positioning structure is used to extend into the corresponding positioning hole.

[0012] In this embodiment, the end of the connecting rod away from the pressing head is provided with an installation channel. The positioning structure includes an elastic element and a positioning ball disposed in the installation channel. One end of the elastic element is connected to the bottom wall of the installation channel, and the other end elastically drives the positioning ball to extend into the positioning hole.

[0013] In this embodiment, the positioning structure includes a positioning part, which is gradually tapered in the axial direction of the connecting rod away from the pressing head.

[0014] In this embodiment, the main body is sleeved outside the sleeve, and the main body is welded to the sleeve.

[0015] In this embodiment, the outer surface of the sleeve portion is provided with a stop protrusion, and the side of the main body portion facing the clamping member abuts against the stop protrusion.

[0016] In addition, this application also provides a lifting device, which includes a sling and a clamping device as described above, with the upper part of the main body used for detachable connection with the sling.

[0017] Through the above technical solution, the clamping device provided in this application embodiment has the following beneficial effects: In the technical solution of this application, when it is necessary to lock the clamped workpiece, the locking assembly is first disassembled from the main body. The locking assembly drives the connecting shaft to rotate, so that the unlocking part rotates to the upper side of the connecting shaft, allowing the sleeve part to pass through the lifting hole of the clamped workpiece. The clamped workpiece is located between the main body and the clamping part. Then, the locking assembly is rotated to drive the connecting shaft to rotate, so that the locking part rotates to the upper side of the connecting shaft. Part of the locking part extends out of the outer periphery of the sleeve part. The part of the locking part extending out of the outer periphery of the sleeve part cooperates with the main body to clamp the workpiece. Then, the locking assembly is connected to the main body to fix the position of the locking part, thereby locking and fixing the clamped workpiece for easy lifting operations.

[0018] When it is necessary to unlock the clamped workpiece, first disassemble the locking assembly from the main body, rotate the locking assembly to drive the connecting shaft to rotate, so that the unlocking part rotates to the upper side of the connecting shaft, so that the sleeve part can pass through the lifting hole of the clamped workpiece, thereby separating the clamping device from the clamped workpiece and thus unlocking the clamped workpiece.

[0019] This application sets up a main body and a clamping component to clamp the workpiece, which can lock and fix the workpiece, so that the workpiece can be stably and reliably connected to the clamping device, facilitating hoisting operations. Compared with traditional hooks, it can improve the safety performance during hoisting.

[0020] Other features and advantages of the embodiments of this application will be described in detail in the following detailed description section. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the following detailed description to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without any inventive effort. In the drawings: Figure 1 This is a schematic diagram of the clamping device according to an embodiment of this application; Figure 2 This is a schematic diagram of the structure of the clamping component in a clamping device according to an embodiment of this application; Figure 3 This is a schematic diagram of the hoisting body in a clamping device according to an embodiment of the present application from one perspective; Figure 4 yes Figure 1 A magnified view of a portion of point A in the middle; Figure 5 This is a structural schematic diagram of the hoisting body in the clamping device according to an embodiment of this application from another perspective; Figure 6 This is a schematic diagram of the structure of a lifting device according to an embodiment of this application; Figure 7 yes Figure 5 A magnified view of a portion of point B in the middle.

[0022] Explanation of reference numerals in the attached figures Detailed Implementation

[0023] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0024] The descriptions of directions such as "up", "down", "front", "back", "left", and "right" in this application are as follows: Figure 1 The directions shown are for reference only and are used to interpret the location. Figure 1 The relative positional relationship between the components in the shown posture is such that if the specific posture changes, the directional indication will also change accordingly.

[0025] The clamping device and lifting tool of this application are described below with reference to the accompanying drawings.

[0026] like Figures 1 to 5 As shown, this application provides a clamping device, which includes a lifting body 10 and a clamping mechanism. The lifting body 10 includes a main body 11 and a sleeve 12 for passing through a lifting hole for clamping a workpiece. The lower part of the main body 11 is provided with the sleeve 12, and the upper part is used for lifting connection. The center line of the sleeve hole of the sleeve 12 is offset to one side of the sleeve 12. The clamping mechanism includes a clamping assembly 20 and a locking assembly 30. The clamping assembly 20 includes a connecting shaft 21 and a clamping member 22. The clamping member 22 is provided at the end of the sleeve 12 away from the main body 11. The connecting shaft 21 passes through the sleeve hole and connects to the clamping member 22. The clamping member 22 extends radially along the connecting shaft 21 and includes a locking part 221 and an unlocking part 222. The end of the connecting shaft 21 away from the clamping member 22 extends out of the main body 11 and is connected to the locking assembly 30. The locking assembly 30 is detachably connected to the main body 11. The locking assembly 30 is used to drive the connecting shaft 21 to rotate when it is detached from the main body 11, so that the locking part 221 rotates to the upper side of the connecting shaft 21 to lock the clamped workpiece, and the unlocking part 222 rotates to the upper side of the connecting shaft 21 to unlock the clamped workpiece.

[0027] The upper part of the main body 11 is used for hoisting connection, and the lower part of the main body 11 is provided with a sleeve part 12. The sleeve part 12 has a sleeve hole that extends through in the axial direction, and the center line of the sleeve hole is offset to one side of the sleeve part 12, that is, the center line of the sleeve hole is offset from the center line of the sleeve part 12. One end of the connecting shaft 21 passes through the sleeve hole and is connected to the clamping member 22, which is located at the end of the sleeve part 12 away from the main body 11. The other end of the connecting shaft 21 extends out of the main body 11 and is connected to the locking assembly 30. The locking assembly 30 is detached from the main body 11 so that the positions of the connecting shaft 21 and the clamping member 22 can be fixed. The clamping member 22 includes a locking part 221 and an unlocking part 222, which extend from the radial sides of the connecting shaft 21, respectively.

[0028] When it is necessary to lock the clamped workpiece, first disassemble the locking assembly 30 from the main body 11. The locking assembly 30 drives the connecting shaft 21 to rotate, so that the unlocking part 222 rotates to the upper side of the connecting shaft 21, allowing the sleeve part 12 to pass through the lifting hole of the clamped workpiece. The clamped workpiece is located between the main body 11 and the clamping part 22. Then, rotate the locking assembly 30 to drive the connecting shaft 21 to rotate, so that the locking part 221 rotates to the upper side of the connecting shaft 21. Part of the locking part 221 extends out of the outer periphery of the sleeve part 12. The part of the locking part 221 extending out of the outer periphery of the sleeve part 12 cooperates with the main body 11 to clamp the workpiece. Then, connect the locking assembly 30 to the main body 11 to fix the position of the locking part 221, so as to lock and fix the clamped workpiece, which facilitates the lifting operation.

[0029] When it is necessary to unlock the clamped workpiece, first disassemble the locking assembly 30 from the main body 11, rotate the locking assembly 30 to drive the connecting shaft 21 to rotate, so that the unlocking part 222 rotates to the upper side of the connecting shaft 21, so that the sleeve part 12 can pass through the lifting hole of the clamped workpiece, so that the clamping device is separated from the clamped workpiece, thereby unlocking the clamped workpiece.

[0030] This application uses a main body 11 and a clamping member 22 to clamp the workpiece, which can lock and fix the workpiece, so that the workpiece can be stably and reliably connected to the clamping device, which facilitates hoisting operations. Compared with traditional hooks, it can improve the safety performance during hoisting.

[0031] Specifically, the workpiece can be clamped with a lifting hole through which the sleeve passes. For example, the workpiece can be the moving jaw plate, fixed jaw plate, guard plate or other workpiece of a jaw crusher.

[0032] In the embodiments of this application, please refer to Figure 1The clamping member 22 is provided with a connecting hole 223. The center line of the connecting hole 223 is set off to one side of the clamping member 22. The connecting shaft 21 extends out of the main body 11 and passes through the connecting hole 223, forming a locking part 221 and an unlocking part 222. The distance between the outer periphery of the locking part 221 and the center line of the connecting hole 223 is equal to the distance between the lower edge of the sleeve part 12 and the center line of the sleeve hole. The distance between the outer periphery of the unlocking part 222 and the center line of the connecting hole 223 is equal to the distance between the upper edge of the sleeve part 12 and the center line of the sleeve hole.

[0033] A connecting hole 223 is provided through the clamping member 22, and the center line of the connecting hole 223 is offset to one side of the clamping member 22. One end of the connecting shaft 21, which extends out of the main body 11, passes through the connecting hole 223 and can form a locking part 221 and an unlocking part 222. Figure 1 As shown, the center line of the connecting hole 223 is offset from the lower side of the clamping member 22, making the connecting shaft 21 and the clamping member 22 eccentrically positioned. The upper side of the connecting shaft 21 is the locking part 221, and the lower side is the unlocking part 222. By providing the connecting hole 223 on the clamping member 22 for the connecting shaft 21 to pass through, the connection between the connecting shaft 21 and the clamping member 22 is more stable. Furthermore, compared to the clamping member 22 directly connecting to the end face of the connecting shaft 21, providing the connecting hole 223 facilitates the positioning and installation of the connecting shaft 21 and the clamping member 22.

[0034] The distance L1 between the outer periphery of the locking part 221 and the center line of the connecting hole 223 is equal to the distance L2 between the lower edge of the sleeve part 12 and the center line of the sleeve hole. The distance L3 between the outer periphery of the unlocking part 222 and the center line of the connecting hole 223 is equal to the distance L4 between the upper edge of the sleeve part 12 and the center line of the sleeve hole. Furthermore, the center line of the connecting hole 223 is offset towards the lower side of the clamping member 22, making L1 greater than L3.

[0035] like Figure 1 As shown, when it is necessary to lock the workpiece, the locking part 221 rotates to the upper side, L1 is greater than L3, and L3 is equal to L4. Therefore, part of the locking part 221 extends beyond the upper edge of the sleeve part 12, and the locking part 221 can cooperate with the main body part 11 to clamp the workpiece.

[0036] When it is necessary to unlock the clamped workpiece, the unlocking part 222 rotates to the upper side, L3 equals L4, L1 equals L2. Therefore, the outer contour of the clamping member 22 is the same size as the outer contour of the sleeve part 12. The clamping member 22 does not extend beyond the edge of the sleeve part 12, so that the sleeve part 12 can pass through the lifting hole of the clamped workpiece, so that the clamping device can be separated from the clamped workpiece.

[0037] In other embodiments, L1 may be slightly smaller than L2, and L3 may be slightly smaller than L4. That is, when it is necessary to unlock the clamped workpiece, the unlocking part 222 rotates to the upper side, and the outer contour of the clamping member 22 is located within the outer contour of the sleeve part 12. Similarly, the clamping member 22 does not extend beyond the edge of the sleeve part 12, and the sleeve part 12 can pass through the lifting hole of the clamped workpiece to separate the clamping device from the clamped workpiece. Furthermore, since L1 is greater than L3, when it is necessary to lock the clamped workpiece, the locking part 221 rotates to the upper side, and the locking part 221 still partially extends beyond the upper edge of the sleeve part 12, so that the locking part 221 can cooperate with the main body part 11 to clamp the clamped workpiece.

[0038] In the embodiments of this application, please refer to Figure 1 The locking assembly 30 includes a rotary wrench 31 and a locking member 32. The rotary wrench 31 includes a connecting part 311 and a wrench part 312 connected to each other. The connecting part 311 is sleeved on the end of the connecting shaft 21 away from the clamping member 22. The connecting part 311 is detachably connected to the main body 11 through the locking member 32. The wrench part 312 is inclined in the direction away from the main body 11 in the direction from bottom to top.

[0039] The connecting part 311 is sleeved on the end of the connecting shaft 21 away from the clamping member 22, so as to connect the rotating wrench 31 to the connecting shaft 21. Rotating the rotating wrench 31 can drive the connecting shaft 21 to rotate, thereby driving the clamping member 22 to rotate to switch between the locked and unlocked states. The connecting part 311 is detachably connected to the main body 11 through the locking member 32. By setting the locking member 32 to connect the connecting part 311 to the main body 11, the position of the rotating wrench 31 can be fixed, thereby fixing the positions of the rotating shaft and the clamping member 22, so that the clamping member 22 can stably maintain the locked or unlocked state.

[0040] The wrench part 312 is inclined in the direction away from the main body part 11 from bottom to top, so that a gripping space is formed between the wrench part 312 and the main body part 11, which makes it convenient for the operator to grip the wrench part 312 to rotate the wrench part 312, thereby driving the rotating shaft and the clamping member 22 to rotate, so as to switch the locked state or the unlocked state.

[0041] In the embodiments of this application, please refer to Figure 1 The locking assembly 30 also includes a connecting pin 33, which extends radially along the connecting shaft 21 and passes through the connecting portion 311 and the connecting shaft 21 in sequence.

[0042] The connecting pin 33 extends radially along the connecting shaft 21, and passes through the connecting part 311 and the connecting shaft 21 in sequence. The connecting part 311 and the connecting shaft 21 are connected by the connecting pin 33. The rotation of the connecting part 311 drives the connecting pin 33 to rotate, and the rotation of the connecting pin 33 drives the connecting shaft 21 to rotate, thereby enabling the rotating wrench 31 to drive the connecting shaft 21 to rotate.

[0043] Specifically, the connecting pin 33 can be a resilient cylindrical pin, which can be easily inserted and removed during installation, simplifying the assembly process and improving work efficiency. The connecting pin 33 can also be a round-headed pin, a hook pin, or other pins; this application does not limit the specific type of connecting pin 33.

[0044] In the embodiments of this application, please refer to Figure 1 and Figure 4 There are two locking parts 32, which are respectively located on the upper and lower sides of the connecting shaft 21. Each locking part 32 includes a pressing head 321 and a connecting rod 322 connected to each other. The pressing head 321 is used to abut against the side of the connecting part 311 away from the main body 11, and the connecting rod 322 is threadedly connected to the connecting part 311.

[0045] Two locking members 32 are respectively located on the upper and lower sides of the connecting shaft 21, making the force on the connecting part 311 more even and stable. The connecting rod part 322 is threadedly connected to the connecting part 311, and the pressing head 321 is used to press against the side of the connecting part 311 away from the main body 11. When it is necessary to keep the clamping member 22 in the locked or unlocked state, the locking member 32 is turned to press the pressing head 321 against the side of the connecting part 311 away from the main body 11, so that the connecting part 311 is tightly pressed against the main body 11, and no relative rotation occurs between the connecting part 311 and the main body 11. When it is necessary to rotate the clamping member 22 to switch between the locked and unlocked states, the locking member 32 is turned in the opposite direction to separate the pressing head 321 from the connecting part 311, so that the connecting part 311 is separated from the main body 11, thereby allowing the connecting part 311 to rotate relative to the main body 11.

[0046] In another embodiment, the connecting rod portion 322 can pass through the connecting portion 311 and be threadedly connected to the main body portion 11, and the pressing head 321 abuts against the side of the connecting portion 311 away from the main body portion 11, so as to fix the position of the connecting portion 311 of the rotating wrench 31.

[0047] In the embodiments of this application, please refer to Figure 1 and Figure 4The main body 11 is provided with two positioning holes 111. The two positioning holes 111 are respectively located on the upper and lower sides of the connecting shaft 21 and on the same circumference with the axis of the connecting shaft 21 as the center line. The connecting rod part 322 of the two locking parts 32 is provided with a positioning structure at the end away from the corresponding pressing head 321. The positioning structure is used to extend into the corresponding positioning hole 111.

[0048] The connecting shaft 21 has positioning holes 111 on its upper and lower sides, respectively. The two positioning holes 111 are located on the same circumference with the axis of the connecting shaft 21 as the center line. The positioning holes 111 are used for the positioning structure to extend into. Both locking members 32 are provided with positioning structures, which are located at the end of the connecting rod portion 322 of the locking member 32 away from the corresponding pressing head 321.

[0049] like Figure 3 and Figure 4 As shown, the two locking members 32 are the first locking member 32a and the second locking member 32b, respectively, and the two positioning holes 111 are the first positioning hole 111a and the second positioning hole 111b, respectively. When the clamping member 22 is in the locked state, the positioning structure of the first locking member 32a extends into the first positioning hole 111a, and the positioning structure of the second locking member 32b extends into the second positioning hole 111b. When the clamping member 22 is in the unlocked state, the positioning structure of the first locking member 32a extends into the second positioning hole 111b, and the positioning structure of the second locking member 32b extends into the first positioning hole 111a.

[0050] By setting two locking parts 32 and two positioning holes 111 to cooperate, the clamping part 22 can be positioned when switching between the locked and unlocked states. That is, the locking part 32 is tightened only when the positioning structure extends into the corresponding positioning hole 111, so that the clamping part 22 can switch between the locked and unlocked states more conveniently.

[0051] In this embodiment, the connecting rod 322 is provided with an installation channel 323 at one end away from the pressing head 321. The positioning structure includes an elastic member 34 and a positioning ball 35 disposed in the installation channel 323. One end of the elastic member 34 is connected to the bottom wall of the installation channel 323, and the other end elastically drives the positioning ball 35 to extend into the positioning hole 111.

[0052] like Figure 4 As shown, the connecting rod portion 322 of the first locking member 32a has a mounting groove 323 at the end opposite to the pressing head 321. The mounting groove 323 extends horizontally, and the positioning structure includes an elastic member 34 and a positioning ball 35 disposed within the mounting groove 323. The left end of the elastic member 34 is connected to the bottom wall of the mounting groove 323, and the right end of the elastic member 34 elastically drives the positioning ball 35 to extend into the positioning hole 111.

[0053] When it is necessary to rotate the clamping member 22 to switch from the locked state to the unlocked state, the first locking member 32a and the second locking member 32b are twisted in the opposite direction, causing the pressing head 321 to separate from the connecting part 311, thereby separating the connecting part 311 from the main body 11, so that the connecting part 311 can rotate relative to the main body 11. When the connecting part 311 rotates relative to the main body 11, the side wall of the mounting channel 323 drives the positioning ball 35 to move, causing the positioning ball 35 to disengage from the first positioning hole 111a, until the connecting part 311 rotates to the position corresponding to the second positioning hole 111b. The elastic force of the elastic member 34 drives the positioning ball 35 to extend into the second positioning hole 111b, indicating that the clamping member 22 has rotated to the unlocked state, and the first locking member 32a and the second locking member 32b can be locked, so that the clamping member 22 can be stably kept in the unlocked state for easy unlocking.

[0054] Similarly, when it is necessary to rotate the clamping member 22 to switch from the unlocked state to the locked state, the first locking member 32a and the second locking member 32b are twisted in the opposite direction, causing the pressing head 321 to separate from the connecting part 311, thereby enabling the connecting part 311 to rotate relative to the main body 11. As the connecting part 311 rotates relative to the main body 11, the side wall of the mounting channel 323 drives the positioning ball 35 to move, causing the positioning ball 35 to disengage from the second positioning hole 111b, until the connecting part 311 rotates to the position corresponding to the first positioning hole 111a. The elastic force of the elastic member 34 drives the positioning ball 35 to extend into the first positioning hole 111a, indicating that the clamping member 22 has rotated to the locked state, and the first locking member 32a and the second locking member 32b can be locked, so that the clamping member 22 can be stably kept in the locked state for easy lifting.

[0055] In this embodiment of the application, the positioning structure includes a positioning part 36, which is gradually tapered in the axial direction of the connecting rod part 322 away from the pressing head 321.

[0056] like Figure 4 As shown, the positioning part 36 is tapered from left to right, which facilitates the positioning part 36 to extend into the positioning hole 111 and makes the process of the positioning part 36 extending into the positioning hole 111 smoother.

[0057] Specifically, the second locking element 32b can be a wing screw, which makes it convenient for the operator to tighten the second locking element 32b.

[0058] In the embodiments of this application, please refer to Figure 5 The main body 11 is sleeved outside the sleeve 12, and the main body 11 is welded to the sleeve 12.

[0059] Specifically, the main body 11 is sleeved outside the sleeve 12, and a weld extending along the outer periphery of the sleeve 12 is formed between the end face of the main body 11 and the end face of the sleeve 12. The main body 11 and the sleeve 12 are connected by welding, so that the connection between the main body 11 and the sleeve 12 can be stable and reliable.

[0060] In the embodiments of this application, please refer to Figure 5 The outer surface of the sleeve portion 12 is provided with a stop protrusion 121, and the side of the main body portion 11 facing the clamping member 22 abuts against the stop protrusion 121.

[0061] By setting the stop protrusion 121 to position the main body 11, it is convenient to position the welding position between the main body 11 and the sleeve 12, making the welding process smoother and improving the consistency of the hoisting main body 10.

[0062] In addition, this application also provides a lifting device; please refer to [link / reference]. Figure 6 and Figure 7 The lifting device includes a sling 40 and a clamping device as described above, with the upper part of the main body 11 used for detachable connection with the sling 40. Since the lifting device employs all the technical solutions of the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated upon here.

[0063] Specifically, such as Figure 6 and Figure 7 As shown, the sling 40 is detachably connected to the upper part of the main body 11 via a pin 41. The upper part of the main body 11 is provided with two connecting lugs 112 spaced apart. The pin 41 passes through the two connecting lugs 112 and the sling 40 in sequence to realize the detachable connection between the sling 40 and the main body 11.

[0064] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0065] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0066] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0067] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A clamping device, characterized in that, The clamping device includes: The hoisting body (10) includes a main body (11) and a sleeve (12) for passing through a hoisting hole for clamping workpieces. The sleeve (12) is provided at the lower part of the main body (11) and at the upper part for hoisting connection. The center line of the sleeve hole of the sleeve (12) is set to one side of the sleeve (12). The clamping mechanism includes a clamping assembly (20) and a locking assembly (30). The clamping assembly (20) includes a connecting shaft (21) and a clamping member (22). The clamping member (22) is located at one end of the sleeve portion (12) away from the main body portion (11). The connecting shaft (21) passes through the sleeve hole and is connected to the clamping member (22). The clamping member (22) extends radially along the connecting shaft (21) and includes a locking portion (221) and an unlocking portion (222). The connecting shaft (21) extends radially away from the clamping member. One end of the component (22) extends out of the main body (11) and is connected to the locking assembly (30). The locking assembly (30) is detachably connected to the main body (11). The locking assembly (30) is used to drive the connecting shaft (21) to rotate when detached from the main body (11), so that the locking part (221) rotates to the upper side of the connecting shaft (21) to lock the clamped workpiece, and the unlocking part (222) rotates to the upper side of the connecting shaft (21) to unlock the clamped workpiece.

2. The clamping device according to claim 1, characterized in that, The clamping member (22) is provided with a connecting hole (223). The center line of the connecting hole (223) is offset to one side of the clamping member (22). The connecting shaft (21) extends out of the main body (11) and passes through the connecting hole (223), forming the locking part (221) and the unlocking part (222). The distance between the outer periphery of the locking part (221) and the center line of the connecting hole (223) is equal to the distance between the lower edge of the sleeve part (12) and the center line of the sleeve hole. The distance between the outer periphery of the unlocking part (222) and the center line of the connecting hole (223) is equal to the distance between the upper edge of the sleeve part (12) and the center line of the sleeve hole.

3. The clamping device according to claim 1, characterized in that, The locking assembly (30) includes a rotating wrench (31) and a locking member (32). The rotating wrench (31) includes a connecting part (311) and a wrench part (312) connected to each other. The connecting part (311) is sleeved on the end of the connecting shaft (21) away from the clamping member (22). The connecting part (311) and the main body (11) are detachably connected through the locking member (32). The wrench part (312) is inclined in the direction away from the main body (11) in the direction from bottom to top.

4. The clamping device according to claim 3, characterized in that, The locking assembly (30) further includes a connecting pin (33) that extends radially along the connecting shaft (21) and passes sequentially through the connecting portion (311) and the connecting shaft (21).

5. The clamping device according to claim 3, characterized in that, There are two locking members (32), which are respectively disposed on the upper and lower sides of the connecting shaft (21). Each locking member (32) includes a pressing head (321) and a connecting rod (322) connected to each other. The pressing head (321) is used to abut against the side of the connecting part (311) away from the main body (11). The connecting rod (322) is threadedly connected to the connecting part (311).

6. The clamping device according to claim 5, characterized in that, The main body (11) is provided with two positioning holes (111). The two positioning holes (111) are respectively located on the upper and lower sides of the connecting shaft (21) and on the same circumference with the axis of the connecting shaft (21) as the center line. The connecting rod part (322) of the two locking parts (32) is provided with a positioning structure at the end away from the corresponding pressing head (321). The positioning structure is used to extend into the corresponding positioning hole (111).

7. The clamping device according to claim 6, characterized in that, The connecting rod (322) is provided with an installation channel (323) at one end away from the pressing head (321). The positioning structure includes an elastic element (34) and a positioning ball (35) disposed in the installation channel (323). One end of the elastic element (34) is connected to the bottom wall of the installation channel (323), and the other end elastically drives the positioning ball (35) to extend into the positioning hole (111). And / or, the positioning structure includes a positioning part (36) that is tapered in the axial direction of the connecting rod part (322) away from the pressing head (321).

8. The clamping device according to any one of claims 1 to 7, characterized in that, The main body (11) is sleeved outside the sleeve (12), and the main body (11) is welded to the sleeve (12).

9. The clamping device according to claim 8, characterized in that, The outer surface of the sleeve portion (12) is provided with a stop protrusion (121), and the side of the main body portion (11) facing the clamping member (22) abuts against the stop protrusion (121).

10. A lifting device, characterized in that, The lifting device includes a sling (40) and a clamping device according to any one of claims 1 to 9, wherein the upper part of the main body (11) is used for detachable connection with the sling (40).

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