CN221110462U - Locking device for clamp and clamp assembly - Google Patents

Abstract

The application provides a locking device for a clamp and a clamp assembly, and relates to the technical field of automobile production, wherein the clamp comprises a turning arm, and the locking device for the clamp comprises: the first fixing piece is used for being connected with the overturning arm and is provided with a first clamping part; the second fixing piece is used for being connected with the driving device of the clamp and comprises a second clamping part; the first clamping part can be clamped with the second clamping part so as to enable the first fixing piece and the second fixing piece to keep opposite states. According to the technical scheme, the automatic locking of the turning arm and the driving device of the clamp can be realized, and the problem that the time and labor are wasted due to manual operation of the self-locking mode of the turning arm and the driving device of the existing clamp is solved.

Description

Locking device for clamp and clamp assembly

Technical Field

The application relates to the technical field of automobile production, in particular to a locking device for a clamp and a clamp assembly.

Background

In the process of automobile production, welding operation is an important component, and in order to improve welding quality, a large number of welding robots are generally adopted to perform automatic welding in combination with welding clamps, and most of work needing manual operation is auxiliary and clamping work. Welding jigs typically have an invert arm that drives the jig body to invert to a designated position by a cylinder, and then a technician snaps the jig positioning mechanism on the invert arm into the part positioning hole, thereby completing the clamping of the part.

Along with the more compact structure of welding jig design, beat is faster in the production course of working, manual clamping action also requires higher and higher, but the upset arm design of some welding jigs is complicated and heavy, through cylinder drive upset in place after, some upset arms often can fall down because of gravity after the cylinder is out of air or the cylinder cuts off suddenly, leads to the technician to need the manual work to lift up the upset arm once more when carrying out the dress, has increased when non-production is used, influences production efficiency. Patent CN108994516a provides a dead point structure for anchor clamps location, including the clamp arm, no. two connecting rods, a connecting rod, press from both sides tight cylinder and frame, no. two connecting rods pass through pivot swing joint with No. one connecting rod, one side and the clamp arm swing joint of No. two connecting rods, another side fixed connection of No. one connecting rod and frame, through manual with press from both sides the clamp arm upset in place, one side activity of No. two connecting rods is embedded into a spacing groove of No. one connecting rod one side, and No. two connecting rods can contact the spacing inslot wall and stop rotating when upwards rotating in this spacing groove, thereby realize the auto-lock, avoid pressing from both sides tight arm structure self-dropping. However, the self-locking mode still needs manual operation, and can still generate non-production time.

Accordingly, there is a need for a locking device for a clamp to address at least the above-mentioned problems.

Disclosure of utility model

The embodiment of the application aims to provide a locking device for a clamp, so as to solve the problem that the manual operation of a turnover arm and a driving device of the existing clamp is required to realize locking, thereby causing time and labor waste.

In order to solve the technical problems, the embodiment of the application provides the following technical scheme:

a first aspect of the present application provides a locking device for a clamp, the clamp including an invert arm, the locking device comprising: the first fixing piece is used for being connected with the overturning arm and is provided with a first clamping part; the second fixing piece is used for being connected with the driving device of the clamp and comprises a second clamping part; the first clamping part can be clamped with the second clamping part, so that the first fixing piece and the second fixing piece keep opposite states.

In some embodiments of the application, the first fixture comprises: the first connecting part comprises a first end and a second end which are oppositely arranged, and the first end is used for connecting one end of the turning arm close to the driving device; the second connecting part is connected with the second end, and the first clamping part is positioned on the second connecting part.

In some embodiments of the application, the second connecting portion is arc-shaped, and when the first connecting portion is connected to the flipping arm, the second connecting portion is disposed around the rotation center of the flipping arm; the first clamping part is detachably connected to the outer peripheral wall of the second connecting part.

In some embodiments of the present application, a plurality of mounting holes are uniformly distributed on the peripheral wall of the second connecting portion, and the first clamping portion is detachably connected with one of the mounting holes.

In some embodiments of the application, the first connecting portion is Y-shaped, and the first end has two connecting ends for connecting with the invert arm.

In some embodiments of the present application, the first clamping portion is a cylinder, the second clamping portion has an elastic bayonet, and the first clamping portion and the second clamping portion can be elastically clamped.

In some embodiments of the application, the second fixture further comprises: the limiting block is arranged in the elastic bayonet of the second clamping part; the first clamping part can be abutted with the limiting block when being clamped in the second clamping part.

In some embodiments of the application, the second fixture further comprises: the third connecting part is used for being connected with the driving device, and the second clamping part is connected with the third connecting part.

In some embodiments of the present application, the third connecting portion is T-shaped, opposite ends of the third connecting portion are used for connecting with the driving device, and the second clamping portion is connected to a middle portion of the third connecting portion.

A second aspect of the application provides a clamp assembly comprising the locking device for a clamp of the first aspect of the application.

Compared with the prior art, the locking device for the clamp provided by the first aspect of the application has the advantages that the first fixing piece is used for being connected with the turning arm of the clamp, the second fixing piece is used for being connected with the driving device of the clamp, and the first clamping part of the first fixing piece and the second clamping part of the second fixing piece can be clamped when the turning arm rotates to the preset position, so that the automatic locking of the turning arm of the clamp and the driving device is realized, and the problem that the time and labor are wasted due to the fact that the manual operation is needed in the self-locking mode of the turning arm of the existing clamp and the driving device is solved.

The technical effect of the clamp assembly provided by the second aspect of the present application is the same as or similar to the technical effect of the locking device for a clamp provided by the first aspect of the present application.

Drawings

The above, as well as additional purposes, features, and advantages of exemplary embodiments of the present application will become readily apparent from the following detailed description when read in conjunction with the accompanying drawings. In the drawings, wherein like or corresponding reference numerals indicate like or corresponding parts, there are shown by way of illustration, and not limitation, several embodiments of the application, in which:

FIG. 1 shows a schematic structural view of a locking device for a clamp according to an exemplary embodiment of the present application;

FIG. 2 is a front view of FIG. 1;

FIG. 3 shows a schematic structural view of a first fixing member in a locking device for a jig according to an exemplary embodiment of the present application;

FIG. 4 shows a schematic structural view of a second fixing member in a locking device for a jig according to an exemplary embodiment of the present application;

FIG. 5 illustrates a schematic structural view of a locking device for a clamp applied to a clamp assembly according to an exemplary embodiment of the present application;

fig. 6 shows a schematic structural view of a locking device for a clamp applied to a clamp assembly according to still another exemplary embodiment of the present application.

Reference numerals illustrate:

1. A first fixing member; 101. a first clamping part; 102. a first connection portion; 103. a connecting end; 104. a second connecting portion; 105. a mounting hole; 2. a second fixing member; 201. a second clamping part; 202. a third connecting portion; 203. a limiting block; 3. a flip arm; 4. a driving device; 5. a support base; 6. and a support plate.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

It is noted that unless otherwise indicated, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs.

In the prior art, the design of the turnover arm of the welding fixture is complex and heavy, and the turnover arm often falls down due to gravity after the air cylinder leaks or is cut off suddenly, so that the turnover arm is required to be lifted again manually when the welding fixture is used for assembling, and the production efficiency is influenced when the welding fixture is not used for production. In order to solve the problems in the prior art, the application provides the locking device for the clamp, when the turnover arm of the welding clamp rotates to a preset position, the first fixing piece and the second fixing piece are clamped, so that the turnover arm and the driving device are kept in a relative state, locking is realized, and manual operation is avoided.

Example 1

The embodiment of the application provides a locking device for a clamp, which can be a welding clamp, wherein the clamp is provided with a turnover arm 3, a driving device 4 is connected to one end of the turnover arm 3, and the driving end of the driving device 4 can extend or retract to drive the turnover arm 3 to rotate for positioning or pre-clamping and other processes. Wherein the driving means 4 may be a cylinder.

As shown in fig. 1 and 2, the locking device includes: the first fixing piece 1, the first fixing piece 1 is used for being connected with the overturning arm 3, and the first fixing piece 1 is provided with a first clamping part 101; the second fixing piece 2, the second fixing piece 2 is used for being connected with the driving device 4 of the clamp, and the second fixing piece 2 comprises a second clamping part 201; the turning arm 3 rotates to drive the first fixing piece 1 to synchronously rotate, so that the first clamping part 101 can be clamped with the second clamping part 201.

According to the locking device for the clamp, a split structure is adopted, as shown in fig. 5, the first fixing piece 1 is used for being connected with the overturning arm 3 of the clamp, the second fixing piece 2 is used for being connected with the driving device 4 of the clamp, when the driving device 4 of the clamp drives the overturning arm 3 to rotate, the overturning arm 3 can drive the first fixing piece 1 to synchronously rotate, the first clamping part 101 of the first fixing piece 1 is clamped with the second clamping part 201 of the second fixing piece 2, so that the first fixing piece 1 and the second fixing piece 2 are kept in a relative state, the overturning arm 3 is kept in a relative state with the driving device 4, the overturning arm 3 is prevented from being loosened when the driving device 4 leaks air, and the overturning arm 3 and the driving device 4 of the clamp are locked due to dead weight falling, and the problem that the working efficiency is affected due to the fact that the overturning arm 3 is required to be manually operated in the prior art is solved.

The locking device provided by the embodiment of the application can be suitable for welding clamps, and also can be suitable for clamps which need the functions of pre-positioning, pre-clamping and the like, such as positioning tools and the like adopted in vehicle production.

In the embodiment of the present application, as shown in fig. 3, the first fixing member 1 includes: a first connecting portion 102, wherein the first connecting portion 102 includes a first end and a second end which are oppositely disposed, and the first end is used for connecting one end of the turning arm 3 close to the driving device 4; the second connecting portion 104, the second connecting portion 104 is connected with the second end, and the first clamping portion 101 is located on the second connecting portion 104.

The first fixing member 1 serves as a connection end of the tilting arm 3, the second fixing member 2 serves as a connection end of the driving device 4, and the first connection portion 102 and the second connection portion 104 of the first fixing member 1 are respectively connected with the tilting arm 3 and the second fixing member 2.

The first connection portion 102 is used for connecting the turning arm 3, and is detachably connected with the turning arm 3. The second connecting portion 104 is connected to the second end of the first connecting portion 102, and the first clamping portion 101 is detachably disposed on the second connecting portion 104, so that the connection position can be adjusted conveniently.

The structural shape of the first fixing member 1 can be matched with the relative positions of the turning arm 3 and the driving device 4, so that the first connecting portion 102 and the second connecting portion 104 of the first fixing member 1 can be of mutually independent split structures, and are assembled to form a whole after being independently processed, thereby saving processing cost, wherein the first connecting portion 102 and the second connecting portion 104 can be welded and fixed, improving positioning accuracy and guaranteeing supporting stability of the turning arm 3.

In the embodiment of the present application, the first connecting portion 102 is Y-shaped, and the first end has two connecting end portions 103, and the connecting end portions 103 are used for connecting with the tilting arm 3.

As shown in fig. 3, the first connecting portion 102 is in a transverse Y-shaped structure, two connecting end portions 103 at a first end are used for being connected with the turning arm 3, wherein the turning arm 3 is provided with a corresponding butt joint hole, the connecting end portions 103 are provided with first through holes, and a connecting piece passes through the first through holes and the butt joint holes of the turning arm 3 to be fixed, so that the first connecting portion 102 is fixed with the turning arm 3, and the connecting piece can be a bolt. The second end of the first connecting portion 102 is fixed to the second connecting portion 104.

The first connecting portion 102 is detachably connected with the overturning arm 3, the butt joint hole of the overturning arm 3 can utilize the original bolt hole or the butt joint hole, the overturning arm 3 is prevented from being reprocessed, and the processing cost is reduced.

In the embodiment of the present application, the second connection portion 104 is arc-shaped, and when the first connection portion 102 is connected to the turning arm 3, the second connection portion 104 is disposed around the rotation center of the turning arm 3; the first clamping portion 101 is detachably connected to the outer peripheral wall of the second connecting portion 104.

The second connecting portion 104 of the arc structure can be adapted to the movement of the turnover arm 3 when the turnover arm 3 rotates, and the second connecting portion 104 is arranged around the rotation center of the turnover arm 3, so that the first clamping portion 101 can keep circular movement along the rotation direction of the turnover arm 3, and can be clamped with the second clamping portion 201.

The second end of the first connecting portion 102 is connected to the bottom of the inner periphery of the second connecting portion 104, and the first connecting portion 102 extends into the first connecting portion 102, so as to reduce the distance between the first clamping portion 101 and the driving device 4, thereby realizing compact working space of the locking device for the clamp, avoiding occupying the arrangement space of other devices on the clamp, and improving the space utilization rate.

In the embodiment of the application, a plurality of mounting holes 105 are uniformly distributed on the outer peripheral wall of the second connecting portion 104, and the first clamping portion 101 is detachably connected with one mounting hole 105.

The first clamping portion 101 may be cylindrical and fixed by interference fit with the mounting hole 105. Alternatively, the first clamping portion 101 may have an external thread, and the mounting hole 105 may be a threaded hole, and the fixing may be achieved through threaded engagement.

The plurality of mounting holes 105 are sequentially arranged at intervals along the arc-shaped surface of the peripheral wall, the first clamping portion 101 is detachably connected with any one of the mounting holes 105, so that the first clamping portion 101 has different angular displacements relative to the rotation center of the turning arm 3, when the driving device 4 drives the turning arm 3 to turn over, the first clamping portion 101 can be clamped with the second clamping portion 201 at different positions, and therefore the turning arm 3 can be kept relatively fixed with the driving device 4 at various angles, and a technician can conveniently keep the angle of the turning arm 3 according to the installation requirements of different parts.

Through adjusting the mounting holes 105 corresponding to the first clamping parts 101, the locking device can be adapted to clamps of different models, and the application range is improved.

In the embodiment of the present application, two first clamping portions 101 may be disposed on the outer peripheral wall of the second connecting portion 104, where one first clamping portion 101 is used to be clamped with the second clamping portion 201, and the other first clamping portion 101 is used as a spare.

In the embodiment of the present application, the second fixing member 2 further includes: a third connecting portion 202, wherein the third connecting portion 202 is used for connecting with the driving device 4, and the second clamping portion 201 is connected with the third connecting portion 202; wherein the second clamping portion 201 is located downstream of the first fixing member 1 in the rotation direction.

The third connecting portion 202 is used for providing a mounting point for locking the driving device 4 and the turnover arm 3, and the second clamping portion 201 is located at the downstream of the rotation direction of the first fixing piece 1, so that the working space of the locking device for the clamp is further reduced, and the arrangement space of other devices on the clamp is avoided.

The specific structure of the second fixing member 2 needs to be adapted to the installation requirements such as the distance between the driving device 4 and the turning arm 3 of the fixture, and the like.

As shown in fig. 1 and 4, in the embodiment of the present application, the third connecting portion 202 is T-shaped, opposite ends of the third connecting portion 202 are used for connecting with the driving device 4, and the second clamping portion 201 is connected to a middle portion of the third connecting portion 202.

The third connecting portion 202 includes two ends that set up relatively to and connect the third end between the both ends, and the both ends of third connecting portion 202 are equipped with the second through-hole respectively, and the second through-hole can be fixed through the connecting piece with the hole site of drive arrangement 4 self, and the connecting piece can be the bolt, realizes dismantling with drive arrangement 4 and is connected.

As shown in fig. 4, the third connecting portion 202 is connected in an inclined manner with respect to the driving direction of the driving device 4, so as to be fixed by using the existing hole of the driving device 4, thereby avoiding additional processing.

The second clamping portion 201 is connected to the second fixing member 2 towards the moving direction of the first clamping portion 101, and the second clamping portion 201 is detachably connected with the third connecting portion 202, so that the second fixing member 2 and/or the second clamping portion 201 can be detached and replaced at any time, and therefore maintenance cost of the second fixing member 2 is reduced.

In the embodiment of the present application, as shown in fig. 4, the first clamping portion 101 is a cylinder, the second clamping portion 201 has an elastic bayonet, and the first clamping portion 101 and the second clamping portion 201 can be elastically clamped.

The second clamping portion 201 may be made of spring steel, and the elastic bayonet is a substantially U-shaped opening, and has two side arms disposed opposite to each other, where one ends of the two side arms are connected, and the other ends are close to each other, so that the first clamping portion 101 is not easy to be separated after being clamped into the elastic bayonet. The elastic bayonet can be mutually close to and far away from each other under the action of external force due to the elastic performance of the elastic bayonet, so that the size of the opening can be changed.

The width dimension of the elastic bayonet is smaller than the diameter dimension of the cylinder.

When the driving device 4 drives the turning arm 3 to turn over, the turning arm 3 drives the first clamping part 101 to turn over in the same direction, and the first clamping part 101 contacts with two side walls of the second clamping part 201, the opening of the elastic bayonet is expanded by the extrusion force of the cylinder, so that the first clamping part 101 is clamped into the second clamping part 201, when the first clamping part 101 is completely clamped into the second clamping part 201, the opening of the elastic bayonet is restored to the original state due to the elasticity of the two side arms, and the width dimension of the elastic bayonet is smaller than the diameter dimension of the cylinder, so that the clamping of the two side arms to the cylinder is realized, and the turning arm 3 and the driving device 4 keep opposite state without falling down due to dead weight.

In the embodiment of the present application, the contact surface between the elastic bayonet of the second clamping portion 201 and the first clamping portion 101 is a smooth curved surface, so that the first clamping portion 101 can be smoothly clamped into the second clamping portion 201.

In the embodiment of the present application, the second fixing member 2 further includes: the limiting block 203, the limiting block 203 is arranged in the elastic bayonet of the second clamping part 201; the first engaging portion 101 engages with the second engaging portion 201 and can be brought into contact with the stopper 203.

One end of the second clamping portion 201, where two side walls are connected, is connected to the third connecting portion 202, and the limiting block 203 is disposed between the two side walls to limit displacement of the first clamping portion 101 in the elastic bayonet.

The elastic bayonet, the third connecting portion 202 and the limiting block 203 may be provided with connecting holes respectively, and the connecting pieces sequentially pass through the connecting holes of the third connecting portion 202 and the limiting block 203, so that the third connecting portion 202 and the limiting block 203 are fixedly connected, and the connecting holes may be countersunk holes, so as to ensure that the first clamping portion 101 is fully contacted with the surface of the limiting block 203.

The stopper 203 is equipped with first surface towards the open side of elasticity bayonet socket, and when first joint portion 101 card advanced second joint portion 201, the cylinder surface and the first surface butt of first joint portion 101 avoid drive arrangement 4's drive force too big, lead to first joint portion 101 and second joint portion 201 to produce too big impact force to lead to turning arm 3 and/or drive arrangement 4 to damage because of the impact force.

The locking device for the clamp provided by the embodiment of the application comprises the following working processes:

When the turnover arm 3 of the clamp is turned under the drive of the driving device 4, the turnover arm 3 drives the first clamping part 101 in the first fixing piece 1 connected with the turnover arm 3 to rotate while turning until the first clamping part 101 is clamped with the second clamping part 201 positioned at the downstream of the first fixing piece 1, and the first clamping part 101 can be clamped through the elastic buckle of the second clamping part 201. The clamp needs to be deflated in the next action, and at the moment, the overturning arm 3 of the clamp is in a loosening state, but the overturning arm 3 cannot fall down due to self weight because the overturning first clamping part 101 is clamped with the overturning second clamping part 201; when the clamping of the parts is completed, the turning arm 3 needs to be separated from the driving device 4 for the next operation, and at this time, a technician manually pulls the turning arm 3 to apply a pressure to the turning arm 3, and the first clamping portion 101 will be separated from the elastic buckle. Due to the dead weight of the flip arm 3, the force applied by the technician to the flip arm 3 is not excessive, and the first clamping portion 101 can be separated from the elastic buckle.

The locking device for the clamp provided by the embodiment of the application is designed by fully utilizing the self structure of the clamp turning arm 3, so that unnecessary machining cost is avoided from being increased by the turning arm 3 and the driving device 4, and the locking device for the clamp is distributed on the turning arm 3 side and the driving device 4 side, so that the turning arm 3 can be automatically fixed relative to the driving device 4 when being driven to a preset position by the driving device 4, and the non-production time is increased due to repeated manual operation. The locking device for the clamp provided by the embodiment of the application is simple, small in operation space, convenient to detach and maintain, and saves the arrangement space.

Example 2

Embodiments of the present application provide a clamp assembly including the locking device for a clamp provided in embodiment 1 of the present application.

The embodiment of the application provides a clamp assembly which can be applied to the field of automobile welding and other production lines needing part clamping, and as shown in fig. 5, the clamp assembly comprises a turning arm 3, a driving device 4 for driving the turning arm 3 to turn, wherein the driving device 4 can be an air cylinder, and a supporting device. As shown in fig. 6, the supporting device comprises a supporting plate 6 and a supporting seat 5, one supporting seat 5 is correspondingly connected with one turning arm 3 and one driving device 4 and is used for supporting the turning arm 3 and the driving device 4, and a plurality of supporting seats 5 can be arranged on the surface of the supporting plate 6, so that the fixture assembly can be provided with a plurality of turning arms 3 and a plurality of driving devices 4, and the turning arms 3 can be turned at the same time, and the fixture assembly is suitable for clamping large parts. The turning arm 3, the driving device 4 and the supporting device are all commonly used structures in the fixture assembly, and detailed descriptions thereof are omitted.

One turning arm 3 and the corresponding driving device 4 can be provided with a locking device for locking, further, one turning arm 3 and the corresponding driving device 4 can be provided with a pair of locking devices, and the pair of locking devices are oppositely arranged on two sides of the turning arm 3 and the driving device 4, so that the locking state of the turning arm 3 and the driving device 4 can be more stable, and the situation that the locking force of one locking device is insufficient, so that the turning arm 3 is separated from the driving device 4 due to gravity is avoided.

The embodiment of the application provides a clamp assembly, which can solve the problem that the turning arm 3 falls down through a locking device for a clamp, avoid the work of manual secondary clamping, adjustment and the like, reduce the waste of human resources, reduce the labor intensity of workers and improve the working efficiency.

The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. A locking device for a clamp, the clamp comprising an invert arm (3), characterized in that the locking device comprises:

The first fixing piece (1), the first fixing piece (1) is used for being connected with the overturning arm (3), and the first fixing piece (1) is provided with a first clamping part (101);

The second fixing piece (2), the second fixing piece (2) is used for being connected with a driving device (4) of the clamp, and the second fixing piece (2) comprises a second clamping part (201);

The first clamping part (101) can be clamped with the second clamping part (201) so as to enable the first fixing piece (1) and the second fixing piece (2) to keep opposite states.

2. Locking device for a clamp according to claim 1, characterized in that the first fixing element (1) comprises:

The first connecting part (102), the first connecting part (102) comprises a first end and a second end which are oppositely arranged, and the first end is used for connecting one end of the overturning arm (3) close to the driving device (4);

The second connecting part (104), the second connecting part (104) with the second end is connected, first joint portion (101) are located on the second connecting part (104).

3. A locking device for a clamp according to claim 2, wherein,

The second connecting part (104) is arc-shaped, and when the first connecting part (102) is connected with the overturning arm (3), the second connecting part (104) is arranged around the rotation center of the overturning arm (3); the first clamping portion (101) is detachably connected to the outer peripheral wall of the second connecting portion (104).

4. A locking device for a clamp according to claim 3, wherein,

The outer peripheral wall of the second connecting portion (104) is uniformly provided with a plurality of mounting holes (105), and the first clamping portion (101) is detachably connected with one mounting hole (105).

5. A locking device for a clamp according to claim 2, wherein,

The first connecting part (102) is Y-shaped, the first end is provided with two connecting end parts (103), and the connecting end parts (103) are used for being connected with the overturning arm (3).

6. A locking device for a clamp according to claim 1, wherein,

The first clamping part (101) is a cylinder, the second clamping part (201) is provided with an elastic bayonet, and the first clamping part (101) and the second clamping part (201) can be elastically clamped.

7. The locking device for a clamp according to claim 6, wherein the second fixing member (2) further comprises:

the limiting block (203) is arranged in the elastic bayonet of the second clamping part (201);

When the first engagement portion (101) is engaged with the second engagement portion (201), the first engagement portion can be brought into contact with the stopper (203).

8. A locking device for a clamp according to claim 1, wherein,

The second fixing member (2) further comprises:

And a third connecting part (202), wherein the third connecting part (202) is used for being connected with the driving device (4), and the second clamping part (201) is connected with the third connecting part (202).

9. The locking device for a clamp according to claim 8, wherein,

The third connecting portion (202) is of a T shape, two opposite ends of the third connecting portion (202) are used for being connected with the driving device (4), and the second clamping portion (201) is connected to the middle portion of the third connecting portion (202).

10. A clamp assembly comprising a clamp and a locking device for a clamp according to any one of claims 1 to 9.