CN212553555U - Clamping device - Google Patents

Abstract

The utility model provides a clamping device, belong to EMUs equipment appurtenance technical field, including the base member, first chuck, the second chuck, slide and screw rod, the base member is equipped with the slide rail, first chuck is located on the base member and is equipped with first round platform, the second chuck is coaxial and relative with first chuck and sets up, be equipped with the second round platform on the second chuck, the slide moves along the slide rail and can fix in arbitrary position, the retainer has set firmly on the slide, set up threaded hole on the retainer, the screw rod is worn to establish in the screw hole of retainer, first chuck sets up in one end of screw rod, the screw rod keeps coaxial with first chuck and second chuck with the help of the retainer; the utility model provides a clamping device, when can improving the EMUs equipment, the assembly precision of the plate-like spare part that has the connecting hole improves the operating efficiency, has fine popularization and application and worth.

Description

Clamping device

Technical Field

The utility model belongs to the technical field of EMUs equipment appurtenance, more specifically say, relate to a clamping device.

Background

During the assembly process of the motor train unit, a plurality of plate-shaped parts with connecting holes are involved. When the parts need to be assembled in a stacked mode, the connecting holes in the parts are aligned, then the plurality of plate-shaped parts are clamped through the clamping device, and finally fastening assemblies such as bolts penetrate into the connecting holes to finish assembly. The existing clamping device only simultaneously compresses the plate-shaped parts in the thickness direction, relative fixation is realized by means of friction force between the plate-shaped parts, the clamping is not firm, and particularly, when the plate-shaped parts are large in size and weight, dislocation is generated between the plate-shaped parts, connecting holes cannot be aligned, and the assembling precision and the working efficiency are seriously influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a clamping device aims at solving the tight not firm technical problem of aforesaid clamp, utilizes to set up near the connecting hole realization of plate-like spare part border firmly and presss from both sides tightly.

In order to achieve the above object, the present invention adopts the technical scheme that a clamping device is provided, which comprises a base body, a first chuck, a second chuck, a slide seat and a screw rod;

the base body is provided with a slide rail;

the first chuck is arranged on the base body and is provided with a first round table;

the second chuck is coaxial with and opposite to the first chuck, and a second round table is arranged on the second chuck;

the sliding seat moves along the sliding rail and can be fixed at any position, a retaining body is fixedly arranged on the sliding seat, and a threaded hole is formed in the retaining body;

the screw rod is arranged in the threaded hole of the holding body in a penetrating mode, the second chuck is arranged at one end of the screw rod, and the screw rod is kept coaxial with the first chuck and the second chuck through the holding body.

As another embodiment of this application, the retainer is door-shaped frame, the screw rod passes simultaneously two stands of door-shaped frame, and at least one be equipped with thickening portion on the stand, thickening portion is used for seting up the screw hole increases the length of screw hole.

As another embodiment of the application, a reinforcing cross beam is arranged between the upright columns.

As another embodiment of this application, the slide rail has laid a plurality of first pinholes along length direction, be equipped with the second pinhole on the slide, the slide keeps fixed with the help of passing simultaneously the locating pin in first pinhole and second pinhole, the one end of locating pin is equipped with the magnetic suction head.

As another embodiment of the present application, the base further includes a hem portion, the hem portion is fixedly disposed at one end of the slide rail, and forms an L-shaped structure with the slide rail, and the first chuck is fixedly disposed on the hem portion.

As another embodiment of the present application, the first chuck is detachably connected to the base, and the second chuck is detachably connected to an end of the screw.

As another embodiment of the present application, a first magnetic suction portion and a first fixture block are disposed on the first chuck, and a first clamping groove for clamping with the first fixture block is disposed on the base;

the second chuck is provided with a second magnetic suction part and a second clamping block with a non-circular section, and the end part of the screw rod is provided with a second clamping groove used for being clamped with the second clamping block.

As another embodiment of the present application, the first circular table and the second circular table are made of a nylon material.

As another embodiment of this application, be equipped with the right angle groove on the outer wall of first round platform and second round platform, the right angle groove be used for with the opening border adaptation joint of the connecting hole on the platelike spare part.

As another embodiment of the application, the tail end of the screw rod is provided with a rotating handle.

Compared with the prior art, the clamping device provided by the utility model is provided with a first chuck and a second chuck, and both are provided with round platforms, namely a first round platform and a second round platform; the outer wall of the circular truncated cone can be abutted against the opening edges of the connecting holes formed in the first plate-shaped part and the second plate-shaped part, so that the two plate-shaped parts can be pressed in the axial direction and tightly attached to each other, and the two plate-shaped parts can be positioned in the circumferential direction of the connecting holes; owing to be provided with the retainer, screw rod, first chuck and second chuck can keep coaxial all the time, even the size and the weight of platelike spare part are great, or there is external force to make both have the trend that produces relative dislocation, platelike spare part also can keep relative still under the restraint of first chuck and second chuck, guarantees that two platelike spare parts can be strictly adjusted well, forms higher assembly accuracy, has also improved assembly operation's efficiency simultaneously.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural view of a clamping device provided in an embodiment of the present invention in a working state;

fig. 2 is a schematic structural view of the clamping device according to the embodiment of the present invention, in a working state when the distance between the connecting hole and the edge of the plate-shaped component is relatively long;

FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 1;

fig. 4 is a schematic structural view of a joint between a first chuck and a base in a clamping device according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a joint between a second chuck and a screw in the clamping device according to an embodiment of the present invention;

fig. 6 is a schematic structural view of a joint between the first chuck and the plate-shaped component, where the right-angle grooves are formed in the clamping device provided by the embodiment of the present invention.

In the figure: 1. a substrate; 11. a slide rail; 111. a first pin hole; 12. a hem part; 13. reinforcing ribs; 21. a first chuck; 211. a first circular table; 212. a first magnetic attraction part; 213. a first clamping block; 22. a second chuck; 221. a second circular table; 222. a second magnetic attraction part; 223. a second fixture block; 224. a right-angle groove; 3. a slide base; 4. a screw; 41. rotating the handle; 5. a holding body; 51. a column; 52. thickening the portion; 53. a top cross beam; 54. a reinforcing cross beam; 61. a first plate-like part; 62. a second plate-like part; 7. and a positioning pin.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1, a clamping device provided by the present invention will now be described. The clamping device comprises a base body 1, a first clamping head 21, a second clamping head 22, a sliding seat 3 and a screw rod 4; the base body 1 is provided with a slide rail 11; the first chuck 21 is arranged on the base body 1 and is provided with a first round table 211; the second chuck 22 and the first chuck 21 are coaxial and are arranged oppositely, and a second round table 221 is arranged on the second chuck 22; the sliding seat 3 moves along the sliding rail 11 and can be fixed at any position, a retaining body 5 is fixedly arranged on the sliding seat 3, and a threaded hole is formed in the retaining body 5; the screw 4 is inserted into a threaded hole of the holding body 5, the second chuck 22 is provided at one end of the screw 4, and the screw 4 is held coaxially with the first chuck 21 and the second chuck 22 by the holding body 5.

Compared with the prior art, the clamping device provided by the utility model is provided with a first clamping head 21 and a second clamping head 22, and both of the clamping head and the second clamping head are provided with round tables, namely a first round table 211 and a second round table 221; the outer wall of the circular truncated cone can be abutted against the opening edges of the connecting holes arranged on the first plate-shaped part 61 and the second plate-shaped part 62, so that the two plate-shaped parts can be pressed in the axial direction and tightly attached, and the two plate-shaped parts can be positioned in the circumferential direction of the connecting holes; because the holding body 5 is arranged, the screw rod 4, the first chuck 21 and the second chuck 22 can always keep coaxial, even if the size and the weight of the plate-shaped parts are larger, or the plate-shaped parts and the first chuck 21 and the second chuck 22 have the tendency of relative dislocation due to external force, the plate-shaped parts can keep relatively static under the constraint of the first chuck 21 and the second chuck 22, the two plate-shaped parts can be ensured to be strictly aligned, higher assembly precision is formed, and meanwhile, the efficiency of assembly operation is also improved.

When the clamping device provided by the utility model is used, firstly, the slide seat 3 is moved along the slide rail 11 according to the thickness of the platy parts, so that the platy parts reach a proper position and are fixed, and the distance between the first chuck 21 and the second chuck 22 is ensured to be slightly larger than the sum of the thicknesses of the clamped platy parts; and then, the screw rod 4 is rotated to enable the second chuck 22 to approach the first chuck 21, and finally the circular truncated cones of the first chuck 21 and the second chuck 22 are abutted against the edge of the opening of the connecting hole and have certain axial clamping force, so that the first plate-shaped part 61 and the second plate-shaped part 62 can be firmly clamped without relative dislocation. Because the clamping mode does not need to prevent the two plate-shaped parts from relatively moving by friction force between the surfaces of the two plate-shaped parts, the pressure of the first clamping head 21 and the second clamping head 22 on the opening edge of the connecting hole does not need to be too large, and the edge of the connecting hole cannot be damaged.

As a specific embodiment of the clamping device provided in the present invention, please refer to fig. 1 and fig. 2, the retaining body 5 is a portal frame, the screw rod 4 simultaneously passes through two columns 51 of the portal frame, and at least one column 51 is provided with a thickened portion 52, the thickened portion 52 is used for forming a threaded hole and increasing the length of the threaded hole. That is, the provision of the thickened portion 52 increases the length of the threaded hole compared to the absence of the thickened portion 52, ensures that the threaded connection of the screw 4 and the holding body 5 has a sufficient length to withstand the destructive shearing forces transmitted to the connection of the screw 4 and the holding body 5 when the first plate-like component 61 and the second plate-like component 62 tend to move relative to each other, resulting in a damaged threaded structure. The screw 4 is connected with the two upright posts 51 simultaneously, so that the axial position of the screw 4 is kept unchanged, and the screw 4, the first chuck 21 and the second chuck 22 are always coaxial, so that the connecting holes on the overlapped plate-shaped parts are always kept aligned. Specifically, the portal frame further includes a top cross member 53; the top cross beam 53 connects the upper ends of the upright posts 51 into a whole, and the lower ends of the upright posts 51 are fixedly arranged on the sliding seat 3; the sliding seat 3 and the door-shaped frame are of an integrated structure.

As a specific embodiment of the clamping device provided in the present invention, please refer to fig. 2, a reinforcing beam 54 is disposed between the columns 51. As shown in fig. 2, when the distance between the connection hole and the edge of the plate-like component is relatively long, the distance between the slide rail 11 and the screw rod 4 is relatively long, in which case the length of the column 51 needs to be increased. The reinforcing beam 54 is provided to ensure that the overall strength of the portal frame meets the requirements, and can stably support the screw rod 4 and overcome the relative dislocation of the plate-shaped parts.

As a specific embodiment of the clamping device provided in the present invention, please refer to fig. 2 and fig. 3, the sliding rail 11 is provided with a plurality of first pin holes 111 along the length direction, the sliding seat 3 is provided with a second pin hole, the sliding seat 3 is kept fixed by the positioning pin 7 passing through the first pin hole 111 and the second pin hole at the same time, and one end of the positioning pin 7 is provided with a magnetic suction head. That is, the positioning pin 7 is held in the first pin hole 111 and the second pin hole by magnetic force, and the slide base 3 is fixed on the slide rail 11, so that the holding body 5 is fixed, and a fixing object is provided for pushing the screw 4 forward against the first plate-like part 61. In fact, since the reaction force of the plate-like component against the first collet 21 is finally transmitted to the positioning pin 7, the positioning pin 7 needs to have a certain diameter and be able to stably receive the reaction force. The positioning pin 7 is only subjected to shear forces during operation and is axially unstressed, so that it is held in the pin bore by magnetic forces. And through the magnetic force connection, the dismouting of locating pin 7 of being convenient for can improve the convenient degree that this clamping device used to improve the operating efficiency. Specifically, the sliding seat 3 is made of steel materials and can attract the magnetic suction head; the magnetic suction head is in a step-shaped cylindrical shape, so that the magnetic suction head is convenient to disassemble; the other end of the positioning pin 7 is positioned in the pin hole, so that the positioning pin 7 is prevented from being accidentally knocked out of the pin hole due to the fact that the pin hole is exposed.

As a specific implementation manner of the clamping device provided in the present invention, please refer to fig. 1 and fig. 2, the base body 1 further includes a folded portion 12, the folded portion 12 is fixed at one end of the slide rail 11, and forms an L-shaped structure with the slide rail 11, and the first chuck 21 is fixed on the folded portion 12. The L-shaped base body 1 is simple and stable in structure, the first clamping head 21 is arranged at one end of the folding part 12 far away from the sliding rail 11, and the second clamping head 22 and the screw rod 4 are arranged at one end of the upright post 51 far away from the sliding rail 11, so that the L-shaped base body 1 is beneficial to the first clamping head 21, the second clamping head 22 and the screw rod 4 to be in coaxial positions. Specifically, when the screw rod 4 is far away from the slide rail 11, the length of the folded edge portion 12 is large, and a reinforcing rib 13 needs to be arranged between the folded edge portion and the slide rail 11 to increase the connection strength so as to overcome the reaction force of the plate-shaped component transmitted from the first chuck 21.

As a specific embodiment of the clamping device provided in the present invention, the first chuck 21 is detachably connected to the base 1, and the second chuck 22 is detachably connected to the end of the screw rod 4. Therefore, the first clamping head 21 and the second clamping head 22 with different sizes can be replaced to adapt to different diameters of the connecting holes, and the applicability of the device is improved.

As a specific embodiment of the clamping device provided by the present invention, as shown in fig. 4, a first magnetic attraction portion 212 and a first clamping block 213 are disposed on the first chuck 21, and a first clamping groove for clamping with the first clamping block 213 is disposed on the base 1; as shown in fig. 5, the second chuck 22 is provided with a second magnetic attraction portion 222 and a second block 223 with a non-circular cross section, and the end of the screw rod 4 is provided with a second slot for engaging with the second block 223. Specifically, the screw rod 4 and the base body 1 are both made of steel materials and can attract the first magnetic part 212 and the second magnetic part 222; the first chuck 21 and the second chuck 22 are attracted to the end parts of the base body 1 and the screw rod 4 by virtue of magnetic force before being clamped, and when the first chuck 21 and the second chuck 22 are clamped, the clamping force pushes the first chuck 21 and the second chuck 22 towards two sides, so that the first chuck 21 and the second chuck 22 are combined with the end parts of the base body 1 and the screw rod 4 respectively more tightly; the first chuck 21 and the second chuck 22 can be conveniently disassembled and assembled by utilizing magnetic connection; the second latch 223 needs to have a non-circular cross section because it overcomes the rotational force in the circumferential direction, and the first latch 213 needs to overcome only the axial force, so that the cross section may have any shape; the first clamping groove on the base body 1 can penetrate through the base body 1, and when the first chuck 21 is detached, the tail end of the first clamping block 213 can be knocked in the first clamping groove, so that the first clamping block is separated from the first clamping groove, and the clamping device is convenient and quick.

As a specific embodiment of the clamping device of the present invention, please refer to fig. 4 and 5, the first circular truncated cone 211 and the second circular truncated cone 221 are made of nylon material. The nylon material has high mechanical strength, good toughness, higher compressive strength, smooth surface, small friction coefficient and wear resistance, and is very suitable for occasions of abutting against and rubbing the edges of the connecting holes.

As a specific implementation manner of the clamping device provided in the present invention, please refer to fig. 6, a right-angle groove 224 is disposed on the outer walls of the first round platform 211 and the second round platform 221, and the right-angle groove 224 is used for being connected with the opening edge of the connecting hole on the plate-shaped component in an adaptive manner. The vertical groove wall of the right-angle groove 224 is used for being attached to and abutted against the surface of the plate-shaped part, and the axial groove wall of the right-angle groove 224 is used for being attached to the hole wall of the connecting hole. The first round platform 211 and the second round platform 221 with the right-angle groove 224 can only be adapted to a connecting hole with one diameter, and are used for occasions with higher requirements on the edge protection of the connecting hole. In fig. 6, the right-angle groove 224 of the first clamping head 21 is in fit clamping connection with the edge of the connecting hole, and the right-angle groove 224 of the second clamping head 22 is not in contact with the edge of the connecting hole, so that the shape of the right-angle groove 224 is clearly shown.

As a specific embodiment of the clamping device provided in the present invention, please refer to fig. 1 and fig. 2, the tail end of the screw rod 4 is provided with a rotating handle 41, which is convenient for people to operate, and the rotating screw rod 4 is used to apply clamping force, thereby improving the operation efficiency. Specifically, the tail end of the screw rod 4 can be connected with an output shaft of the electric wrench through a connector, so that the rotation of the screw rod 4 can be realized, the torque can be set, the advancing distance of the screw rod 4 is ensured to be proper, and the clamping force is proper in size.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. Clamping device, its characterized in that includes:

a base body provided with a slide rail;

the first chuck is arranged on the base body and is provided with a first round table;

the second chuck is coaxial and opposite to the first chuck, and a second round table is arranged on the second chuck;

the sliding seat moves along the sliding rail and can be fixed at any position, a retaining body is fixedly arranged on the sliding seat, and a threaded hole is formed in the retaining body; and

the screw rod penetrates through the threaded hole of the holding body, the second chuck is arranged at one end of the screw rod, and the screw rod is coaxial with the first chuck and the second chuck through the holding body.

2. The clamping device as claimed in claim 1, wherein said holding body is a portal frame, said threaded rod passes through both uprights of said portal frame, and at least one of said uprights is provided with a thickening for opening and increasing the length of said threaded hole.

3. The clamping device as claimed in claim 2, wherein a reinforcing cross-member is provided between said uprights.

4. The clamping device as claimed in claim 1, wherein the slide rail is provided with a plurality of first pin holes along a length direction, the slide carriage is provided with a second pin hole, the slide carriage is kept fixed by a positioning pin which passes through the first pin hole and the second pin hole at the same time, and one end of the positioning pin is provided with a magnetic suction head.

5. The clamping device as claimed in claim 1, wherein the base further comprises a flange portion, the flange portion is fixedly disposed at one end of the slide rail and forms an L-shaped structure with the slide rail, and the first clamping head is fixedly disposed on the flange portion.

6. The clamping device as claimed in claim 1, wherein said first collet is removably connected to said base and said second collet is removably connected to an end of said threaded rod.

7. The clamping device as claimed in claim 6, wherein the first chuck is provided with a first magnetic part and a first clamping block, and the base is provided with a first clamping groove for clamping with the first clamping block;

the second chuck is provided with a second magnetic suction part and a second clamping block with a non-circular section, and the end part of the screw rod is provided with a second clamping groove used for being clamped with the second clamping block.

8. The clamping device as recited in claim 1, wherein said first and second bosses are formed of a nylon material.

9. The clamping device as claimed in claim 1, wherein the outer walls of the first round table and the second round table are provided with right-angle grooves, and the right-angle grooves are used for being in adaptive clamping connection with the opening edges of the connecting holes on the plate-shaped parts.

10. The clamping device as claimed in claim 1, wherein the screw is provided with a rotary handle at its trailing end.

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