Jig

Abstract

The utility model relates to the technical field of clamping, in particular to a jig. The jig comprises a jig body, the jig body comprises a base, a first protruding part and a second protruding part, the first protruding part and the second protruding part are located on the two sides of the base in the first direction, and a jacking groove is formed between the first protruding part and the second protruding part; the first protruding part is provided with a first mounting hole penetrating through the first protruding part in the first direction, and the first mounting hole communicates with the jacking groove; and the jacking assembly is movably mounted in the first mounting hole and is configured to move in the axial direction of the first mounting hole, so that at least part of the jacking assembly moves to the jacking groove. According to the jig, the height of the jacking groove is changed through movement of the jacking assembly, and then parts with different thicknesses can be clamped; and moreover, the clamping process of the jig is simple, different numbers of jigs can be selected according to the shape of the part and the carrying requirement, the part is clamped in different areas, the part is rapidly clamped, meanwhile, balanced hoisting or carrying after the part is clamped is achieved, and the hoisting or carrying safety is high.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of clamping, in particular to a jig. BACKGROUND

[0002] In the field of numerical control machining, for the parts to be machined or machined, the parts are usually moved to the next station by hoisting or other handling methods. The handling process uses a sling to bundle the parts to achieve the purpose of fixing the parts.

[0003] For parts such as basin-shaped parts or plate-shaped parts that require high balance during handling, the handler needs to adjust the sling to maintain balance in order to hoist and handle the above-mentioned parts. However, the adjustment process of the sling is complex, which affects the handling efficiency, and there is a risk of falling during the adjustment process or handling process, which poses a safety hazard. CONTENT OF THE UTILITY MODEL

[0004] Therefore, the present application provides a jig to ensure the rapid clamping of parts while achieving balanced hoisting or handling of the clamped parts.

[0005] The present application provides a jig, which includes a jig main body and a tightening assembly. The jig main body includes a base, a first protruding portion and a second protruding portion, the first protruding portion and the second protruding portion are located on both sides of the base along a first direction, and a tightening slot is formed between the first protruding portion and the second protruding portion. The first protruding portion is provided with a first mounting hole penetrating through the first protruding portion along the first direction, and the first mounting hole communicates with the tightening slot. The tightening assembly is movably installed in the first mounting hole, and the tightening assembly is configured to move along the axial direction of the first mounting hole, so that at least part of the tightening assembly moves to the tightening slot.

[0006] The tightening assembly can move along the first mounting hole, that is, the change of the clamping height of the tightening slot is realized by the movement of the tightening assembly, so that the height of the tightening slot can match parts of different thicknesses, and different thickness parts can be clamped. The clamping process of the jig is simple, and different numbers of jigs can be selected according to the shape of the parts and the handling requirements to clamp the parts in different regions and at equal distances, that is, to ensure the rapid clamping of the parts while achieving balanced hoisting or handling of the clamped parts, without the need for the handler to make multiple adjustments, and the safety of hoisting or handling is high.

[0007] In some embodiments, the tightening assembly includes a tightening main body and a limiting block connected thereto, at least part of the tightening main body is movably installed in the first mounting hole, the limiting block is located between the first protruding portion and the second protruding portion along the first direction, and the diameter of at least part of the limiting block is greater than the diameter of the first mounting hole.

[0008] The axial movement of the clamping assembly along the first mounting hole can drive the movement of the limiting block in the clamping groove, so as to change the clamping height of the clamping groove; at the same time, the diameter of at least part of the limiting block is greater than the diameter of the first mounting hole, so as to limit the disengagement of the clamping assembly from the first mounting hole and ensure the installation stability of the clamping assembly.

[0009] In some embodiments, the clamping body is provided with a positioning hole near one end of the second protruding part, and the limiting block is provided with a positioning protrusion installed in the positioning hole, and the clamping body and the limiting block are connected with each other through the cooperation of the positioning hole and the positioning protrusion.

[0010] The clamping body and the limiting block are in a detachable structure, which facilitates the installation of the clamping assembly into the first positioning hole; and when one of the clamping body and the limiting block is damaged, it can be replaced individually, thereby reducing the maintenance cost of the clamping assembly.

[0011] In some embodiments, the outer peripheral surface of the clamping body is provided with a first threaded structure, the inner peripheral surface of the first mounting hole is provided with a second threaded structure, and the clamping body is configured to move axially along the first mounting hole through the cooperation of the first threaded structure and the second threaded structure.

[0012] The clamping assembly and the first mounting hole are connected through the cooperation of threads, so as to control the movement distance of the clamping assembly in the first mounting hole, and the connection between the clamping assembly and the first mounting hole is more stable.

[0013] In some embodiments, the clamping assembly further comprises a protective cap, and the protective cap is arranged at least on the surface of the limiting block away from the clamping body.

[0014] The protective cap is arranged on at least part of the surface of the limiting block, so as to reduce the collision between the limiting block and the parts and prolong the service life of the clamping assembly; and the protective cap can further increase the diameter of the limiting block, further limit the disengagement of the clamping assembly from the first mounting hole, and ensure the installation stability of the clamping assembly.

[0015] In some embodiments, the protective cap is provided with a friction layer on the surface near the second protruding part; the friction layer is a point-like protruding structure, a strip-like protruding structure, a point-like recessed structure or a point-like recessed structure.

[0016] The protective cap is in contact with the parts during the clamping process of the jig, and the friction structure is arranged on the abutting surface of the protective cap, so as to further improve the clamping capacity of the jig, reduce the risk of parts falling off from the jig during handling, and improve the safety of lifting and handling.

[0017] In some embodiments, the surface of the first protrusion facing the second protrusion is provided with a receiving groove, the receiving groove being connected to the first mounting hole and the tightening groove respectively, and the receiving groove being configured to receive one end of the tightening assembly.

[0018] The receiving groove is formed by a recess on the first protrusion. One end of the clamping component can be received in the receiving groove. At this time, the clamping component will not affect the part from entering the clamping groove, which speeds up the docking of the fixture and the part, thereby improving the hoisting and handling efficiency.

[0019] In some embodiments, the clamping assembly further includes a force-applying member connected to the end of the clamping body away from the limiting block, the force-applying member being configured to drive the clamping assembly to move axially along the first mounting hole.

[0020] The force-applying component is connected to the clamping body and is located at the end of the clamping body away from the second protrusion. Understandably, when the transporter aligns the jig with the part, the transporter does not need to use tools and can move the clamping component to abut against the part through the force-applying component, which shortens the time required to fix the part and improves the efficiency of hoisting and transporting.

[0021] In some embodiments, the fixture further includes a lifting ring with a mounting protrusion; the first protrusion has a second mounting hole, and the lifting ring is mounted on the first protrusion by the engagement of the mounting protrusion with the second mounting hole.

[0022] The addition of lifting rings facilitates the installation of the fixture on lifting equipment or other handling equipment. Furthermore, by setting different numbers of lifting rings on the fixture according to the shape of the parts and the handling requirements, the balance of the parts during lifting or handling can be improved.

[0023] In some embodiments, the fixture further includes a handle mounted on the first protrusion or the base.

[0024] The handle design allows the handler to move the fixture, adjust its gripping position on the parts, shorten fixture adjustment time, and improve hoisting and handling efficiency. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the fixture provided in this application.

[0026] Figure 2 for Figure 1 Exploded view of the jig shown.

[0027] Figure 3 for Figure 1 An exploded view of the clamping assembly of the fixture shown.

[0028] Figure 4 forFigure 1 The structure diagram of the shown fixture and the part interface.

[0029] Main element symbol explanation

[0030] 1, fixture main body;

[0031] 11, base; 12, first protruding part; 121, first mounting hole; 122, receiving groove; 123, second mounting hole; 13, second protruding part; 14, clamping groove;

[0032] 2, clamping assembly;

[0033] 21, clamping main body; 211, positioning hole; 22, limiting block; 221, positioning protrusion; 23, protective cap;

[0034] 3, lifting ring;

[0035] 31, mounting protrusion;

[0036] 4, handle;

[0037] Z, first direction; X, second direction; Y, third direction. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments.

[0039] In the related art in the field of numerical control machining, for the parts to be machined or machined, the parts are usually moved to the next station by hoisting or other handling methods. The hoisting belt is used to bundle the parts during the handling process to fix the parts.

[0040] For parts such as basin-shaped parts or plate-shaped parts that require high handling balance, the handler needs to adjust the hoisting belt to maintain balance in order to hoist and handle the above-mentioned parts. However, the adjustment process of the hoisting belt is complex, which affects the handling efficiency, and there is a risk of falling of the parts during the adjustment process or handling process, which poses a safety hazard.

[0041] In view of this, the present application provides a jig, please refer to Figure 1 and Figure 2The jig comprises a jig body 1 and a pressing assembly 2. The jig body 1 comprises a base 11, a first protruding part 12 and a second protruding part 13. The first protruding part 12 and the second protruding part 13 are located on both sides of the base 11 along a first direction Z, and a pressing groove 14 is formed between the first protruding part 12 and the second protruding part 13. The first protruding part 12 is provided with a first mounting hole 121 penetrating through the first protruding part 12 along the first direction Z, and the first mounting hole 121 is communicated with the pressing groove 14. The pressing assembly 2 is movably mounted in the first mounting hole 121, and the pressing assembly 2 is configured to move along the axial direction of the first mounting hole 121, so that at least part of the pressing assembly 2 moves into the pressing groove 14.

[0042] The pressing assembly 2 can move axially along the first mounting hole 121, and the change of the clamping height of the pressing groove 14 can be realized by the movement of the pressing assembly 2, so that the height of the pressing groove 14 can match the parts of different thicknesses, and the parts of different thicknesses can be clamped. The clamping process of the jig is simple, and different numbers of jigs can be selected according to the shape and handling requirements of the parts to clamp the parts in different regions and at equal distances, so that the parts can be clamped quickly and balanced hoisted or handled after clamping, and the safety of hoisting or handling is high.

[0043] Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. The features in the following embodiments and examples can be combined with each other without conflict.

[0044] In the following, for the convenience of description, as shown in Figure 3 , the first direction Z is defined as the Z-axis direction, the second direction X is defined as the X-axis direction, and the third direction Y is defined as the Y-axis direction, and the first direction Z, the second direction X and the third direction Y are perpendicular to each other.

[0045] In some embodiments, please continue to refer to Figure 1 and Figure 2 , the jig body 1 comprises a base 11, a first protruding part 12 and a second protruding part 13. The first protruding part 12 and the second protruding part 13 are respectively arranged on both sides of the base 11 along the first direction Z, and the sizes of the first protruding part 12 and the second protruding part 13 can be substantially the same. The first protruding part 12 and the second protruding part 13 form a pressing groove 14, that is, the cross-sectional shape of the pressing groove 14 is substantially U-shaped as viewed along the third direction Y.

[0046] The size of the first protruding portion 12 and the second protruding portion 13 in the present application affects the width of the clamping groove 14 along the second direction X and the extension length of the clamping groove 14 along the third direction Y, which affects the clamping stability of the part. For example, when the width of the clamping groove 14 along the second direction X and the extension length of the clamping groove 14 along the third direction Y are large, the part to be clamped can extend into the clamping groove 14 with a larger area, and the clamping stability of the jig is high; when the width of the clamping groove 14 along the second direction X and the extension length of the clamping groove 14 along the third direction Y are small, the part to be clamped can extend into the clamping groove 14 with a smaller area, and the clamping stability of the jig is reduced. The size of the first protruding portion 12 and the second protruding portion 13 in the present application is not limited, and can be selected according to the size of the part to be clamped.

[0047] In some embodiments, the first protruding portion 12 is provided with a first mounting hole 121 penetrating along the first direction Z, and the first mounting hole 121 communicates with the clamping groove 14. The clamping assembly 2 is movably mounted in the first mounting hole 121, that is, the clamping assembly 2 is configured to move along the axial direction of the first mounting hole 121 to switch between the non-working state and the working state. It can be understood that when the clamping assembly 2 is in the non-working state, the end of the clamping assembly 2 close to the second protruding portion 13 does not protrude out of the first mounting hole 121, or part of the clamping assembly 2 is located in the clamping groove 14, but does not affect the clamping height of the clamping groove 14 along the first direction Z; when the clamping assembly 2 is in the working state, the clamping assembly 2 can move along the axial direction of the first mounting hole 121 into the clamping groove 14 until the clamping assembly 2 abuts against the part.

[0048] It should be noted that the number of the clamping assembly 2 and the first positioning hole 211 in the present application is not limited, and can be selected according to the size of the part. For example, when the size of the part to be carried is large, a plurality of clamping assemblies 2, such as two, three or five, can be arranged on the jig to exert a greater force on the part to ensure the stability of the clamping of the part; when the size of the part to be carried is small, a smaller number of clamping assemblies 2, such as one, can be arranged on the jig to ensure the clamping stability of the jig and the part. Optionally, two clamping assemblies 2 are arranged on the jig in the present application, and the two clamping assemblies 2 are symmetrically arranged on the first protruding portion 12 to exert uniform clamping force.

[0049] In some embodiments, please refer to Figure 3The top-tight assembly 2 of the present application comprises a top-tight body 21 and a limiting block 22 connected together, at least part of the top-tight body 21 has a diameter smaller than or equal to that of the first mounting hole 121, so that the at least part of the top-tight body 21 is movably mounted in the first mounting hole 121, and the limiting block 22 is located between the first protruding portion 12 and the second protruding portion 13 along the first direction Z. At least part of the limiting block 22 has a diameter greater than that of the first mounting hole 121. It can be understood that the diameter of at least part of the limiting block 22 is greater than that of the first mounting hole 121, which can limit the top-tight assembly 2 from escaping from both ends of the first mounting hole 121, thereby ensuring the installation stability of the top-tight assembly 2. The diameters of the top-tight body 21 and the limiting block 22 can be selected according to the size of the first mounting hole 121, which is not limited herein.

[0050] Further, the surface of the first protruding portion 12 facing the second protruding portion 13 is provided with a receiving groove 122, which is in communication with the first mounting hole 121 and the top-tight groove 14 respectively, and the receiving groove 122 is configured to receive one end of the top-tight assembly 2. It can be understood that the limiting block 22 at the end of the top-tight assembly 2 is received in the receiving groove 122, at this time the limiting block 22 of the top-tight assembly 2 does not affect the part to be clamped of the part to enter the top-tight groove 14, which speeds up the docking of the jig and the part, thereby improving the hoisting and carrying efficiency.

[0051] As an optional technical solution of the present application, the top-tight body 21 and the limiting block 22 can be an integrally formed structure or a combined structure, wherein the combined structure includes bonding, welding or detachable connection, etc. It can be understood that when the top-tight body 21 and the limiting block 22 are an integrally formed structure, the overall strength of the top-tight assembly 2 is high, and the service life is longer, but the assembly difficulty of the top-tight assembly 2 and the first mounting hole 121 is increased; when the top-tight body 21 and the limiting block 22 are a bonding or welding structure, the installation difficulty of the top-tight assembly 2 is reduced, and the connection strength of the top-tight body 21 and the limiting block 22 is higher; when the top-tight body 21 and the limiting block 22 are a detachable structure, the assembly difficulty of the top-tight assembly 2 and the first mounting hole 121 is low.

[0052] Optionally, the top-tight body 21 and the limiting block 22 are a detachable structure, specifically, one end of the top-tight body 21 close to the second protruding portion 13 is provided with a positioning hole 211, and the limiting block 22 is provided with a positioning protrusion 221 mounted in the positioning hole 211, and the top-tight body 21 and the limiting block 22 are connected to each other through the cooperation of the positioning hole 211 and the positioning protrusion 221. It can be understood that the top-tight body 21 and the limiting block 22 are a detachable structure, which facilitates the installation of the top-tight assembly 2 to the first positioning hole 211; and when one of the top-tight body 21 or the limiting block 22 is damaged, it can be replaced individually, thereby reducing the maintenance cost of the top-tight assembly 2.

[0053] It should be noted that the positioning protrusion 221 of the present application and the limiting block 22 can be an integral structure, or a limiting hole is formed on the limiting block 22, and the limiting block 22 is combined with the positioning pin to form the positioning protrusion 221, which can be selected according to actual needs, and is not limited here. Optionally, please continue to refer to Figure 3 The limiting block 22 and the positioning protrusion 221 in the present application are a detachable structure.

[0054] As an optional technical solution of the present application, the movement and stop of the jacking assembly 2 at the first mounting hole 121 are configured to be realized through a friction structure or a threaded structure. It can be understood that when the jacking assembly 2 and the first mounting hole 121 are connected by friction fit, the outer circumferential surface of the jacking body 21 and the inner circumferential surface of the first mounting hole 121 are provided with a friction structure, and then the force applied by the jacking assembly 2 is greater than the friction between the two, that is, the jacking assembly 2 is moved along the axial direction of the first mounting hole 121; when the jacking assembly 2 and the first mounting hole 121 are connected by thread fit, the outer circumferential surface of the jacking body 21 is provided with a first threaded structure (not shown in the figure), and the inner circumferential surface of the first mounting hole 121 is provided with a second threaded structure (not shown in the figure), and the jacking body 21 is configured to move along the axial direction of the first mounting hole 121 through the cooperation of the first threaded structure and the second threaded structure. Optionally, the jacking assembly 2 and the first mounting hole 121 are connected by thread fit, and the thread fit can realize more accurate control of the movement distance of the jacking assembly 2 in the first mounting hole 121, and the connection between the jacking assembly 2 and the first mounting hole 121 is more stable.

[0055] It should be noted that when the jacking assembly 2 and the first mounting hole 121 are connected by friction fit, the transverse surface of the jacking assembly 2 can not be limited to a circular shape, but can also be a regular polygon or an ellipse, which can be selected according to actual needs, and is not limited here.

[0056] In some embodiments, please continue to refer to Figure 3 The jacking assembly 2 of the present application further comprises a protective cap 23, which is arranged at least on the surface of the limiting block 22 away from the jacking body. It can be understood that the protective cap 23 can reduce the collision between the limiting block 22 and the parts, prolong the service life of the jacking assembly 2; and the protective cap 23 can further increase the diameter of the limiting block 22, further limit the jacking assembly 2 from separating from the first mounting hole 121, and ensure the installation stability of the jacking assembly 2.

[0057] It should be noted that the protective cap 23 can be arranged on the surface of the limiting block 22 away from the jacking body, or can be arranged to cover all areas of the limiting block 22 except the positioning protrusion 221, which can be selected according to actual needs, and is not limited here. Optionally, the protective cap 23 of the present application covers the surface of the limiting block 22 away from the jacking body and the circumferential wall surface of the limiting block 22.

[0058] The material of the protective cap 23 used in the present application can be a soft material such as rubber or silicone. The soft material not only protects the limiting block 22, but also has a certain buffering effect, reducing the scratching of the surface of the part by the jacking assembly 2.

[0059] It should be noted that the diameter of the protective cap 23 is smaller than the width of the accommodating groove 122, so that when the jacking assembly 2 is in a non-working state, the protective cap 23 can enter the accommodating groove 122, without affecting the docking process of the jacking groove 14 and the part.

[0060] Further, the surface of the protective cap 23 close to the second protruding part 13 is provided with a friction layer, wherein the friction layer is a point-shaped distribution of protruding structure, a strip-shaped distribution of protruding structure, a point-shaped distribution of recess structure or a point-shaped distribution of recess structure. The specific structure of the friction layer can be selected according to actual needs, which is not limited here. It can be understood that the protective cap 23 contacts and protects the part during the clamping process of the jig. By providing a friction structure on the abutting surface of the protective cap 23, the clamping capacity of the jig can be further improved, the risk of the part falling off from the jig due to too small friction force during handling can be reduced, and the safety of lifting and handling can be improved.

[0061] In some embodiments, the movement of the jacking assembly 2 in the first mounting hole 121 is realized by external force, which can be manual rotation, external force knocking, wrench, etc. The specific structure can be selected according to actual needs, which is not limited here. Optionally, a force applying member (not shown in the figure) can be provided on the jacking assembly 2. The force applying member is connected to the end of the jacking main body 21 away from the limiting block 22, so as to drive the jacking assembly 2 to move along the axial direction of the first mounting hole 121. It can be understood that the force applying member is connected to the jacking main body 21 and located on one side of the first protruding part 12. It can be understood that when the handler docks the jig with the part, the handler does not need to use tools, but can move the jacking assembly 2 to abut against the part through the force applying member, thereby shortening the time required for fixing the part and improving the efficiency of lifting and handling. The force applying member used in the present application can be a handle or a knob, which is convenient to grasp. The specific structure can be selected according to actual needs, which is not limited here.

[0062] In some embodiments, please continue to refer to Figure 1 and Figure 2The tool further comprises a lifting ring 3 for connecting the tool with a lifting device. The lifting ring 3 is provided with a mounting protrusion 31, and the first protruding part 12 is provided with a second mounting hole 123, and the lifting ring 3 is mounted on the first protruding part 12 through cooperation of the mounting protrusion 31 and the second mounting hole 123. It can be understood that the lifting ring 3 is arranged to facilitate the mounting of the tool on a lifting device or other carrying device, and different numbers of lifting rings 3 can be arranged on the tool according to the shape of the part and the carrying requirements, so as to improve the balance of the part lifting or carrying. Optionally, two lifting rings 3 are used in the present application, and are evenly distributed on the first protruding part 12.

[0063] In some embodiments, please continue to refer to Figure 1 and Figure 2 The tool further comprises a handle 4 mounted on the first protruding part 12 or the base 11. For example, the handle 4 can be arranged only on the first protruding part 12 or the base 11, or can be arranged on both the first protruding part 12 and the base 11 to improve the convenience of gripping. It can be understood that the handle 4 is arranged to facilitate the movement of the tool by the carrier, so as to adjust the clamping position of the tool on the part, shorten the tool adjustment time, and improve the lifting and carrying efficiency.

[0064] In actual application, please refer to Figure 4 The tool is connected with the lifting device through the lifting ring 3, and the tool is moved to butt joint with the part to be clamped through the handle 4, so that the part to be clamped enters the jacking groove 14. At this time, an acting force is applied to the jacking assembly 2, so that the jacking assembly 2 moves along the axis of the first mounting hole 121 until the protective cap 23 abuts against the part and fixes the part, and the clamping process of the part is completed. When the part is carried to a specified station, an acting force is applied to the jacking assembly 2, so that the end of the jacking assembly 2 enters the receiving groove 122, and the tool is separated from the part through the handle 4, and the carrying process of the part is completed.

[0065] It should be noted that for parts such as basin-shaped parts or plate-shaped parts which have high balance requirements, a plurality of tools can be used according to the basin-shaped parts or plate-shaped parts. For example, the tools can be arranged at equal intervals along the circumference of the basin-shaped parts or plate-shaped parts, or can be arranged along the diagonal lines. The specific shape of the basin-shaped parts or plate-shaped parts can be selected, which is not limited herein.

[0066] In addition, those skilled in the art should understand that the above embodiments are only used to illustrate the present application, but not as a limitation to the present application, and any appropriate changes and variations made to the above embodiments within the spirit and scope of the present application fall within the disclosure range of the present application.

Claims

1. A jig characterized by comprising: The utility model relates to a jig, which comprises: a jig body comprising a base, a first protruding part and a second protruding part, the first protruding part and the second protruding part being located on both sides of the base along a first direction, and a clamping groove being formed between the first protruding part and the second protruding part; the first protruding part is provided with a first mounting hole penetrating through the first protruding part along the first direction, and the first mounting hole communicates with the clamping groove; a clamping assembly movably mounted in the first mounting hole and configured to move along the axial direction of the first mounting hole so that at least part of the clamping assembly moves into the clamping groove.

2. The jig of claim 1, wherein The clamping assembly comprises a clamping body and a limiting block connected with each other, at least part of the clamping body is movably mounted in the first mounting hole, the limiting block is located between the first protruding part and the second protruding part along the first direction, and the diameter of at least part of the limiting block is greater than the diameter of the first mounting hole.

3. The jig of claim 2, wherein One end of the clamping body close to the second protruding part is provided with a positioning hole, the limiting block is provided with a positioning protrusion mounted in the positioning hole, and the clamping body and the limiting block are connected with each other through the cooperation of the positioning hole and the positioning protrusion.

4. The jig of claim 2, wherein The outer circumferential surface of the clamping body is provided with a first threaded structure, the inner circumferential surface of the first mounting hole is provided with a second threaded structure, and the clamping body is configured to move along the axial direction of the first mounting hole through the cooperation of the first threaded structure and the second threaded structure.

5. The jig of claim 2, wherein The clamping assembly further comprises a protective cap provided on at least the surface of the limiting block away from the clamping body.

6. The jig of claim 5, wherein, The surface of the protective cap close to the second protruding part is provided with a friction layer. The friction layer is a point-like distributed protruding structure, a strip-like distributed protruding structure, a point-like distributed recessed structure or a point-like distributed recessed structure.

7. The tool of claim 2, wherein The surface of the first protruding part facing the second protruding part is provided with a receiving groove, the receiving groove respectively communicates with the first mounting hole and the clamping groove, and the receiving groove is configured to receive one end of the clamping assembly.

8. The tool of claim 2, wherein, The clamping assembly further comprises an elastic member connected with the end of the clamping body away from the limiting block, and the elastic member is configured to drive the clamping assembly to move along the axial direction of the first mounting hole.

9. The tool of claim 1, wherein, The jig further comprises a lifting ring provided with a mounting protrusion. The first protruding part is provided with a second mounting hole, and the lifting ring is mounted in the first protruding part through the cooperation of the mounting protrusion and the second mounting hole.

10. The tool of claim 1, wherein, The jig further comprises a handle mounted on the first protruding part or the base.

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