CN113770953A

CN113770953A - Clamp apparatus

Info

Publication number: CN113770953A
Application number: CN202111222883.7A
Authority: CN
Inventors: 李胜; 李庆文; 高波
Original assignee: CRRC Datong Co Ltd
Current assignee: CRRC Datong Co Ltd
Priority date: 2021-10-20
Filing date: 2021-10-20
Publication date: 2021-12-10
Anticipated expiration: 2041-10-20
Also published as: CN113770953B

Abstract

The embodiment of the invention discloses a clamp which comprises a bearing part, a plurality of clamping assemblies and a plurality of supporting parts, wherein the bearing part comprises a plurality of connecting parts and a bearing surface, and the connecting parts are arranged on the bearing surface. The clamping assemblies can be detachably connected to different connecting parts according to the products to be clamped in different shapes so as to clamp the products to be clamped on the bearing surface along the first direction. The first direction is perpendicular to the bearing surface. A plurality of support pieces can be connected in different connecting portion according to waiting to press from both sides the product detachably of different shapes to the product is waited to the support, and waits to press from both sides the product along second direction or third direction location. The second direction and the third direction are mutually vertical, are both parallel to the bearing surface and are vertical to the first direction. The plurality of clamping assemblies can also be connected to different connecting parts so as to position the product to be clamped on the bearing surface along the second direction or the third direction.

Description

Clamp apparatus

Technical Field

The invention relates to the technical field of clamps, in particular to a clamp.

Background

Generally, the bogie frame of each type of railway vehicle mainly comprises a side beam, a cross beam and the like, each single beam body is mostly of a box-type structure, and positioning and clamping are realized through a clamp in the technical processes of assembly, welding, processing, detection and the like.

At present, the rail vehicles are various in variety, and the structure difference of each box-shaped beam is large. However, the special fixture in the related art has a single function, and generally can only clamp a beam body of a specific vehicle type, and various different fixtures are needed for beam bodies with different structures, so that the universality is not high, the cost input can be increased due to redesign, manufacturing and replacement of the fixture during vehicle type replacement, the production period is prolonged, and waste is caused, and meanwhile, the various fixtures occupy a large storage area, and waste of storage space and management cost is caused.

Disclosure of Invention

The embodiment of the invention provides a clamp capable of improving the problem of clamping universality.

The clamp comprises a bearing part, a plurality of clamping assemblies and a plurality of supporting parts, wherein the bearing part comprises a plurality of connecting parts and a bearing surface, and the connecting parts are arranged on the bearing surface; the clamping assemblies can be detachably connected to different connecting parts according to products to be clamped in different shapes so as to clamp the products to be clamped on the bearing surface along a first direction; the first direction is vertical to the bearing surface; the supporting pieces can be detachably connected to different connecting parts according to products to be clamped in different shapes so as to support the products to be clamped and position the products to be clamped along a second direction or a third direction; the second direction and the third direction are mutually vertical, are both parallel to the bearing surface and are vertical to the first direction; the clamping assemblies can be further connected to different connecting parts so as to position the product to be clamped on the bearing surface along the second direction or the third direction.

According to some embodiments of the invention, the connecting portions are arranged on the bearing surface in an array, and the distance between two adjacent connecting portions in one row or one column is the same.

According to some embodiments of the invention, each of the connection portions includes a threaded hole, and the clamping assembly and/or the support member is/are threadedly engaged with the threaded hole.

According to some embodiments of the invention, each of the support members comprises a support base, a support bar, and a first locking member;

the supporting seat detachably connect in connecting portion, the bracing piece connect in telescopically the supporting seat deviates from hold the one end that holds carrier, in order to adjust support piece's support height, first retaining member locks the bracing piece with the supporting seat.

According to some embodiments of the invention, the support base is in threaded connection with the connecting portion, and the support bar is in threaded connection with the support base.

According to some embodiments of the present invention, the clamping assembly includes a base, a screw, a pressing plate, and a stopper, the base is connected to the connecting portion, the screw is screwed to an end of the base away from the bearing member, the pressing plate is liftably connected to the screw to press the product to be clamped, and the stopper is connected to the screw to stop the pressing plate from being separated from the screw in a direction away from the base.

According to some embodiments of the invention, the clamping assembly further comprises a press member comprising a stem portion and a handle portion, the stem portion and the handle portion being perpendicular, the stem portion having an external thread;

the pressing plate comprises a waist-shaped hole and a pressing threaded hole, the screw rod penetrates through the waist-shaped hole and can move along the extending direction of the waist-shaped hole, and the rod part is in threaded connection with the pressing threaded hole so that the pressing part can press the top surface of the product to be clamped.

According to some embodiments of the invention, the base includes a first threaded hole extending along the second direction and a second threaded hole extending along the third direction;

the rod part can be in threaded connection with the first threaded hole and/or the second threaded hole, so that the pressing piece presses against the side face of the product to be clamped along the second direction and/or the third direction.

According to some embodiments of the present invention, the clamping assembly further includes a positioning member and a second locking member, the positioning member has an external threaded portion at one end thereof and a positioning plane at the other end thereof, the external threaded portion can be screwed with the first threaded hole or the second threaded hole so that the positioning plane abuts against a side surface of the product to be clamped, and the second locking member locks the positioning member and the base.

According to some embodiments of the present invention, the supporting member further includes a plurality of through holes, and the through holes are spaced and annularly arranged on the supporting surface, so as to mount the clamp on a positioner through a connecting member.

One embodiment of the above invention has at least the following advantages or benefits:

according to the clamp provided by the embodiment of the invention, by adopting the technical means that the plurality of clamping components and the plurality of supporting pieces are detachably connected to different connecting parts, the positions of the clamping components and the supporting pieces which are arranged on the bearing piece can be adjusted according to products to be clamped with different structures, so that the clamping components and the supporting pieces are matched with different products to be clamped, the positioning in the first direction, the positioning in the second direction and the positioning in the third direction are realized, and the problem of universality of clamping is improved. Simultaneously, clamping component and support piece all adopt detachable mode to be connected with carrying the thing, can pull down clamping component and support piece from carrying the thing when the storage, and then reduce inventory occupancy.

Drawings

Fig. 1 is a schematic structural diagram of a jig according to an embodiment of the present invention.

Fig. 2 shows a schematic structural view of a carrier according to an embodiment of the present invention.

Fig. 3 shows a schematic structural view of the support member according to the embodiment of the present invention.

Fig. 4 is a schematic structural view of a clamping assembly according to an embodiment of the present invention.

Fig. 5 is a schematic structural diagram of a base according to an embodiment of the present invention.

Fig. 6 is a schematic structural view showing the assembled base and pressing member according to the embodiment of the present invention.

Fig. 7 is a schematic view showing the assembled structure of the base, the positioning member and the second locking member according to the embodiment of the present invention.

Fig. 8 is a schematic structural diagram illustrating that the clamp clamps a product to be clamped according to the embodiment of the invention.

Fig. 9 is a schematic structural diagram illustrating that the clamp clamps another product to be clamped according to the embodiment of the invention.

Wherein the reference numerals are as follows:

100. bearing part

101. Bearing surface

110. Connecting part

120. Through hole

200. Clamping assembly

210. Base seat

211. First screw hole

212. Second screw hole

213. Third threaded hole

214. Mounting hole

220. Screw rod

230. Pressing plate

231. Waist-shaped hole

232. Compressing threaded hole

240. Stop piece

250. Pressing piece

251. Rod part

252. Handle part

260. Locating piece

261. Location plane

270. Second locking member

300. Support piece

310. Supporting seat

320. Support rod

330. First locking member

400. Product to be clamped

D1, first direction

D2, second direction

D3, third Direction

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as 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 concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.

As shown in fig. 1, fig. 1 is a schematic structural diagram of a clamp according to an embodiment of the present invention. The jig of the embodiment of the present invention includes a carrier 100, a plurality of clamping assemblies 200, and a plurality of supporters 300. The bearing member 100 includes a plurality of connecting portions 110 and a bearing surface 101, and the plurality of connecting portions 110 are disposed on the bearing surface 101. The plurality of clamping assemblies 200 can be detachably connected to different connecting portions 110 according to different shapes of the product 400 to be clamped, so as to clamp the product 400 to be clamped on the bearing surface 101 along the first direction D1, wherein the first direction D1 is perpendicular to the bearing surface 101. The supporting members 300 can be detachably connected to different connecting portions 110 according to different shapes of the product 400 to be clamped, so as to support the product 400 to be clamped, and position the product 400 to be clamped along the second direction D2 or the third direction D3, where the second direction D2 and the third direction D3 are perpendicular to each other, parallel to the bearing surface 101, and perpendicular to the first direction D1. Wherein, a plurality of clamping assemblies 200 can also be connected to different connecting portions 110 to position the product 400 to be clamped on the bearing surface 101 along the second direction D2 or the third direction D3.

According to the clamp provided by the embodiment of the invention, by adopting the technical means that the plurality of clamping assemblies 200 and the plurality of supporting pieces 300 are detachably connected to different connecting parts 110, the positions of the clamping assemblies 200 and the supporting pieces 300 which are arranged on the bearing piece 100 can be adjusted according to products 400 to be clamped with different structures, so that the clamping assemblies can be matched with different products 400 to be clamped, the positioning of the first direction D1, the second direction D2 and the third direction D3 can be realized, and the problem of universality of clamping of the clamp is improved. Meanwhile, the clamping assembly 200 and the supporting member 300 are detachably connected to the carrier 100, so that the clamping assembly 200 and the supporting member 300 can be detached from the carrier 100 during storage, thereby reducing inventory occupancy.

As shown in fig. 2, fig. 2 is a schematic structural diagram of a carrier 100 according to an embodiment of the present invention. The carrier 100 may have a rectangular plate-like structure and extends along the third direction D3. In the third direction D3, the carrier 100 has a length, and in the second direction D2, the carrier 100 has a width, and the length of the carrier 100 is greater than the width.

Of course, the shape of the carrier 100 may also be circular or other suitable shapes. The material of the carrier 100 may be a metal, an alloy, or the like.

One side surface of the bearing member 100 is a bearing surface 101, the plurality of connecting portions 110 are arranged on the bearing surface 101 in an array, and distances between two adjacent connecting portions 110 in one row or one column are the same. The distance between two adjacent connection portions 110 in one row or one column is, for example, 80mm, 100mm or other values, which is not particularly limited in the present invention. The carrying surface 101 may be a plane or a curved surface, etc.

In an embodiment, a side of the bearing member 100 facing away from the bearing surface 101 is further provided with a reinforcing rib structure to increase the structural strength of the bearing member 100, so as to ensure that the bearing member 100 has sufficient bearing strength.

In an embodiment, each connection portion 110 includes a threaded bore with which the clamping assembly 200 and/or the support 300 is threaded. The carrier 100, the clamping assembly 200 and the support 300 are connected by screwing, so that the assembly and disassembly of an operator are facilitated. At the same time, the specifications of each threaded hole on the carrier 100 are the same.

The plurality of threaded holes are arranged in an array on the carrier 100 and are divided into a plurality of rows, each row including a plurality of threaded holes. The extending direction of each row of threaded holes may be along any direction in the bearing surface 101, for example, the extending direction of each row of threaded holes is parallel to the second direction D2 or the third direction D3, or forms an angle with the second direction D2.

The specification of the threaded hole may be M12, M16, M20, or the like, but is not limited thereto.

In the present embodiment, the carrier 100 has a rectangular plate shape, the specification of the threaded holes is M20, and the distance between adjacent threaded holes is 100 mm.

The carrier 100 further includes a plurality of through holes 120, and the through holes 120 are spaced apart and annularly disposed on the carrying surface 101 for mounting the fixture on a positioner through a connector. The connector may be a bolt. After the clamp clamps the product 400 to be clamped, the clamp can be mounted on the position changer through the through hole 120 so as to realize the position change of the product 400 to be clamped, and the operations of assembling, welding, processing, detecting and the like of the product 400 to be clamped are facilitated.

In one embodiment, the number of the through holes 120 is 6, and the through holes are uniformly arranged along the circumferential direction, and the central angle of two adjacent through holes 120 is 60 degrees.

As shown in fig. 3, fig. 3 is a schematic structural view of a supporting member 300 according to an embodiment of the present invention. According to the specific shape of the product 400 to be clamped, an appropriate number of the supporting members 300 are selected, and the supporting members 300 are mounted on different connecting portions 110 to support the product 400 to be clamped and position the product 400 to be clamped along the second direction D2 or the third direction D3. Each support member 300 includes a support base 310, a support bar 320, and a first locking member 330. The supporting base 310 is detachably connected to the connecting portion 110, the supporting rod 320 is telescopically connected to an end of the supporting base 310 away from the bearing member 100 to adjust a supporting height of the supporting member 300, and the first locking member 330 locks the supporting rod 320 and the supporting base 310.

The support base 310 is screwed with the connection portion 110, and the support bar 320 is screwed with the support base 310. The support base 310 can be screwed with any one of the screw holes of the carrier 100, so that the position of the support 300 can be adjusted according to different products 400 to be clamped.

In one embodiment, the support base 310 may be a cylinder or a prism structure, and the material of the support base 310 may be metal, alloy, or the like.

In one embodiment, the support rod 320 is a bolt and the first securing member 330 is a nut, which may be an M20 hex shoulder nut. One end of the support bar 320 is screwed with the support base 310, and the other end is used for supporting the product 400 to be clamped.

It should also be noted that the supporting member 300 can also position the product 400 to be clamped along the second direction D2 or the third direction D3. Specifically, according to the products 400 to be clamped in different shapes, a plurality of supporting members 300 can be mounted on the appropriate connecting portions 110, so that the side walls of the supporting members 300 abut against the side surfaces of the products 400 to be clamped, and a positioning effect is achieved.

As shown in fig. 8 and 9, fig. 8 is a schematic structural view illustrating that the clamp according to the embodiment of the present invention clamps a product 400 to be clamped. Fig. 9 is a schematic structural diagram illustrating a fixture for clamping another product 400 to be clamped according to an embodiment of the present invention. The positions of the clamping assembly 200 shown in fig. 8 and 9 mounted on the carrier 100 are different depending on the product 400 to be clamped. By adjusting the position of the clamping assembly 200 mounted on the carrier 100, the clamp can adapt to products 400 to be clamped with different lengths, widths and heights.

Referring to fig. 4, fig. 4 is a schematic structural view of a clamping assembly 200 according to an embodiment of the present invention. The clamping assembly 200 includes a base 210, a screw 220, a pressing plate 230, and a stopper 240, wherein the base 210 is connected to the connecting portion 110, the screw 220 is screwed to an end of the base 210 facing away from the carrier 100, the pressing plate 230 is liftably connected to the screw 220 to press the product 400 to be clamped, and the stopper 240 is connected to the screw 220 to stop the pressing plate 230 from separating from the screw 220 in a direction away from the base 210.

In one embodiment, the number of the bases 210 and the number of the screws 220 are two, the two screws 220 are respectively screwed to the two bases 210, and the two pairs of screwed screws 220 and bases 210 are respectively disposed on two opposite sides of the product 400 to be clamped.

As shown in fig. 5, fig. 5 is a schematic structural diagram of a base 210 according to an embodiment of the present invention. The base 210 includes a first screw hole 211, a second screw hole 212, a third screw hole 213, and a mounting hole 214. The base 210 may be secured to the carrier 100 by mounting holes 214, such as bolts, passing through the mounting holes 214 and threaded holes in the carrier 100.

The first threaded hole 211 extends along the second direction D2, the second threaded hole 212 extends along the third direction D3, and the third threaded hole 213 extends along the first direction D1. The first threaded hole 211 and the second threaded hole 212 are used for connecting a pressing member 250. The screw 220 is screwed with the third threaded hole 213, and the height of the clamping assembly 200 can be adjusted by adjusting the length of the screw 220 screwed into the third threaded hole 213, so as to adapt to products 400 to be clamped with different heights.

In one embodiment, the base 210 has a flange structure at the bottom thereof, and the flange structure has a mounting hole 214. The diameter of the mounting hole 214 is slightly larger than the diameter of the threaded hole in the carrier 100, for example, the mounting hole 214 is sized with a diameter of 22. The base 210 may be prismatic or cylindrical. The material of the base 210 may be a metal, an alloy, or other suitable material.

In one embodiment, the material of the screw 220 may be metal, alloy or other suitable material, and may be subjected to heat treatment such as blackening and hardening. The length of the screw 220 may be 100mm, 200mm or 300mm, but is not limited thereto.

In one embodiment, the pressure plate 230 has a strip structure, and the material thereof may be metal, alloy or other suitable material. The pressing plate 230 may be subjected to a heat treatment such as surface hardening.

As shown in fig. 4, the pressing plate 230 includes a kidney-shaped hole 231 and a pressing threaded hole 232, the screw 220 is inserted through the kidney-shaped hole 231, and the screw 220 can move along the extending direction of the kidney-shaped hole 231 to finely adjust the position of the pressing plate 230 relative to the screw 220, so that the pressing plate 230 can be pressed against a suitable area of the product 400 to be clamped. Meanwhile, the pressing plate 230 can be lifted relative to the screw 220 to adjust the distance between the pressing plate 230 and the carrier 100, so that the clamping assembly 200 can adapt to products 400 to be clamped with different heights.

In the present embodiment, the pressing plate 230 is provided with two waist-shaped holes 231 at both ends, and the distance between the two waist-shaped holes 231 may be equal to the distance between the adjacent connecting portions 110 on the carrier 100, or an integer multiple of the distance between the adjacent connecting portions 110.

The clamping assembly 200 further comprises a pressing member 250, wherein the pressing member 250 comprises a rod part 251 and a handle part 252, the rod part 251 and the handle part 252 are perpendicular, and the rod part 251 is provided with an external thread. The operator rotates the handle portion 252 to rotate the rod portion 251. The rod portion 251 is screwed with the pressing threaded hole 232 so that the pressing member 250 can press the top surface of the product 400 to be clamped. In actual clamping, the top surface of the product 400 to be clamped is not a plane, so that clamping is performed only by the pressing plate 230, and the pressing effect is not good. In the present embodiment, by providing the pressing member 250, the rod portion 251 of the pressing member 250 is screwed with the pressing threaded hole 232, so that the rod portion 251 can pass through the pressing threaded hole 232 to press the product 400 to be clamped, and the clamping effect is further ensured.

In one embodiment, the pressure plate 230 is provided with a plurality of pressure threaded holes 232.

In one embodiment, the material of the pressing member 250 may be a metal, an alloy or other suitable material. The pressing member 250 may be subjected to a heat treatment such as surface hardening.

As shown in fig. 6, fig. 6 is a schematic structural view illustrating an assembled base 210 and pressing member 250 according to an embodiment of the present invention. The rod portion 251 of the pressing member 250 can be screwed with the first threaded hole 211 and/or the second threaded hole 212, so that the pressing member 250 presses the side of the product 400 to be clamped along the second direction D2 and/or the third direction D3.

In the present embodiment, the pressing element 250 is screwed with the first threaded hole 211 and/or the second threaded hole 212, so that the pressing element 250 presses the side of the product 400 to be clamped along the second direction D2 and/or the third direction D3, thereby further ensuring the positioning effect.

Therefore, the rod part 251 of the pressing member 250 can be screwed with the pressing threaded hole 232, the first threaded hole 211 or the second threaded hole 212 to press the top surface or the side surface of the product 400 to be clamped along the first direction D1, the second direction D2 or the third direction D3, and the mounting position of the pressing member 250 is selected according to the products 400 to be clamped in different shapes, so that the clamping universality of the clamp is improved.

Referring to fig. 7, fig. 7 is a schematic structural view illustrating the base 210, the positioning member 260 and the second locking member 270 of the embodiment of the present invention after they are assembled. The clamping assembly 200 further includes a positioning member 260 having an external threaded portion at one end thereof and a positioning plane 261 at the other end thereof, and a second locking member 270 for locking the positioning member 260 and the base 210, wherein the external threaded portion can be threadedly engaged with the first threaded hole 211 or the second threaded hole 212 such that the positioning plane 261 abuts against the side of the product 400 to be clamped.

In one embodiment, the positioning member 260 is a bolt, the second locking member 270 is a nut, and the nut may be an M20 hexagonal shoulder nut. The length of the positioning member 260 may be 30mm or 50mm, but is not limited thereto.

It should be noted that the supporting rod 320 and the positioning member 260 can be the same component, and the first locking member 330 and the second locking member 270 can be the same component. Thus, the operator can select a suitable clamping mode according to the specific shape of the product 400 to be clamped. For example, if it is necessary to support the product 400 to be clamped, and it is not necessary to use the positioning plane 261 of the positioning member 260 to abut against the side of the product 400 to be clamped, a bolt may be screwed on the supporting base 310 for supporting. If the positioning member 260 is required to abut against the side of the product 400 to be clamped and the support is not required, the bolt may be screwed into the first threaded hole 211 or the second threaded hole 212 of the base 210. Of course, bolts may be disposed on both the supporting base 310 and the base 210 for supporting and positioning.

In other words, according to the specific structure of the product 400 to be clamped, an operator can select the specific installation position of the bolt to play different roles, parts can be flexibly replaced and adjusted, and the management and maintenance cost of the tool is reduced.

In one embodiment, a lifting ring screw may be used for the integral lifting operation of the clamp according to the embodiment of the present invention, and the specification of the lifting ring screw may be M20.

The internal thread structures in the parts all adopt the same specification, the external thread structures all adopt the same specification, and the internal thread structures are in threaded connection with the external thread structures. Therefore, all the parts in the clamp disclosed by the embodiment of the invention can be screwed mutually to form different positioning assemblies so as to position and clamp different products 400 to be clamped, and various different clamping modes are realized by adjusting the positions of all the parts or combining the parts differently, so that frequent new manufacture and replacement of the clamp are avoided, the universality of the clamp is improved, and meanwhile, the production cost is also reduced.

In the embodiments of the invention, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. Specific meanings of the above terms in the embodiments of the invention may be understood by those of ordinary skill in the art according to specific situations.

In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred device or unit must have a specific direction, be configured and operated in a specific orientation, and thus, should not be construed as limiting the embodiments of the present invention.

In the description herein, reference to the term "one embodiment," "some embodiments," "a specific embodiment," or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above embodiments are merely preferred embodiments of the present invention, and are not intended to limit the present invention, and various modifications and changes may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the embodiments of the invention should be included in the protection scope of the embodiments of the invention.

Claims

1. A clamp, comprising:

the bearing part comprises a plurality of connecting parts and a bearing surface, and the connecting parts are arranged on the bearing surface;

the clamping assemblies can be detachably connected to different connecting parts according to products to be clamped in different shapes so as to clamp the products to be clamped on the bearing surface along a first direction; the first direction is vertical to the bearing surface;

the supporting pieces can be detachably connected to different connecting parts according to products to be clamped in different shapes so as to support the products to be clamped and position the products to be clamped along a second direction or a third direction; the second direction and the third direction are mutually vertical, are both parallel to the bearing surface and are vertical to the first direction;

the clamping assemblies can be further connected to different connecting parts so as to position the product to be clamped on the bearing surface along the second direction or the third direction.

2. The clamp according to claim 1, wherein a plurality of the connecting portions are arranged on the bearing surface in an array, and the distance between two adjacent connecting portions in one row or one column is the same.

3. A clamp according to claim 2, wherein each of the attachment portions includes a threaded bore, the clamping assembly and/or the support being in threaded engagement with the threaded bore.

4. The clamp of claim 1, wherein each of the support members comprises a support base, a support bar, and a first locking member;

5. The clamp of claim 4, wherein the support base is threadably coupled to the connecting portion and the support rod is threadably coupled to the support base.

6. The clamp of claim 1, wherein the clamping assembly comprises a base, a threaded rod, a pressing plate and a stop member, the base is connected to the connecting portion, the threaded rod is screwed to an end of the base facing away from the bearing member, the pressing plate is liftably connected to the threaded rod to compress the product to be clamped, and the stop member is connected to the threaded rod to stop the pressing plate from disengaging from the threaded rod in a direction away from the base.

7. The clamp of claim 6, wherein the clamping assembly further comprises a press member including a stem portion and a handle portion, the stem portion being perpendicular to the handle portion, the stem portion having an external thread;

8. The clamp of claim 7, wherein the base includes a first threaded hole extending along the second direction and a second threaded hole extending along the third direction;

9. The clamp of claim 8, wherein the clamping assembly further comprises a positioning member and a second locking member, one end of the positioning member is provided with an external thread part, the other end of the positioning member is provided with a positioning plane, the external thread part can be in threaded connection with the first threaded hole or the second threaded hole, so that the positioning plane abuts against the side surface of the product to be clamped, and the second locking member locks the positioning member and the base.

10. The fixture as claimed in claim 1, wherein the carrier further comprises a plurality of through holes spaced apart and annularly disposed on the carrying surface for mounting the fixture on a displacer by a connecting member.