Clamping mechanism and bolt detection device thereof

Abstract

The utility model discloses a clamping mechanism and a bolt detection device thereof, and relates to the technical field of bolt clamping, the clamping mechanism comprises two mounting seats, a clamping plate piece is arranged between the two mounting seats, an elastic supporting piece used for providing thrust for the clamping plate piece is arranged between the mounting seats and the clamping plate piece, and the clamping plate piece comprises a clamping block fixedly arranged at one end of the elastic supporting piece. A positioning groove is formed in the side wall of the clamping block located at one end of one elastic supporting piece, and the inner diameter of the positioning groove gradually decreases towards the inner side of the clamping block. The positioning groove is formed in the side, making contact with the bolt, of the clamping block in the clamping plate piece, the positioning groove is matched with the positioning groove to sink towards the inner side of the check block, and the inner diameter of the check block is gradually reduced, so that the end of the bolt can be automatically positioned, and the other clamping block of the other clamping plate piece is matched to extrude the other end of the bolt; the bolt can be located at the axis position of the two clamping blocks while being located in a horizontal state, so that the bolt can be located more conveniently, and the locating precision is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of bolt clamping, in particular to a clamping mechanism and a bolt detection device thereof. Background Art

[0002] In the detection of cracks, pores or defects on the surface and near the surface of bolts, magnetic particle inspection is generally carried out. The distribution of the magnetic field on the bolt surface changes. When the magnetic field encounters cracks or defects, the magnetic field deformation occurs. This deformation can be displayed by the aggregation of magnetic powder, thereby achieving the purpose of bolt flaw detection.

[0003] In the prior art, on a magnetic particle flaw detector, a clamping mechanism for clamping a bolt generally applies pressure to both ends of the bolt through two clamping plates, so that the bolt is fixed between the two clamping plates by the extrusion force.

[0004] However, in actual use, since the surface of the clamping plate used in the clamping mechanism of the magnetic particle flaw detector is flat, in order to ensure that the magnetic powder can be stably laid on the bolt surface, the bolt needs to be clamped and positioned in a horizontal state. As a result, when the bolt is positioned in the clamping mechanism of the magnetic particle flaw detector, it is necessary to manually position the bolt horizontally, and at the same time, it is also necessary to position the bolt and the clamping plate coaxially, which makes the positioning operation of the bolt in the clamping mechanism difficult and inconvenient to use. Therefore, a clamping mechanism and a bolt detection device thereof are proposed. Utility Model Content

[0005] The purpose of the present utility model is to provide a clamping mechanism and a bolt detection device thereof to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a clamping mechanism, comprising two mounting seats, a clamping plate member is provided between the two mounting seats, an elastic support member for providing thrust to the clamping plate member is provided between the mounting seat and the clamping plate member, the clamping plate member comprises a clamping block fixedly arranged at one end of the elastic support member, a positioning groove is provided on the side wall of the clamping block located at one end of one of the elastic support members, and the inner side of the radial clamping block in the positioning groove gradually decreases.

[0007] Preferably, the splint also includes a stopper, a rubber ring is fixedly embedded in the middle of the stopper on the side facing the clamping block, a connecting shaft is movably inserted in the rubber ring, and the end of the connecting shaft away from the stopper is fixedly connected to the middle of the clamping block.

[0008] Preferably, a material receiving plate is fixedly connected to the bottom between the two mounting seats, and a circular arc groove is provided on the top of the material receiving plate.

[0009] Preferably, the cross section of the arc groove is arc-shaped, and a discharge port is provided at the bottom of the mounting seat, and the discharge port is communicated with the arc groove.

[0010] Preferably, the elastic support member includes a connecting tube, one end of which is fixedly connected to the side wall of the mounting seat, and the other end of the connecting tube is provided with a retractable connecting shaft, and a reset spring for automatically extending the connecting shaft is provided between the connecting shaft and the connecting tube.

[0011] Preferably, a receiving chamber connected to one end of the connecting tube is provided inside the connecting tube, a slider is movably provided in the receiving chamber, the reset spring is fixedly arranged between the slider and the inner wall of the receiving chamber, and the side of the slider facing away from the reset spring is fixedly connected to one end of the connecting shaft.

[0012] Another object of the present invention is to provide a bolt detection device, which includes the above-mentioned clamping mechanism.

[0013] Technical effects and advantages of this utility model:

[0014] The utility model provides a positioning groove on the side of the clamping block in the clamping plate that contacts the bolt, and cooperates with the positioning groove to be recessed toward the inside of the stop block and the inner diameter gradually decreases, so that the end of the bolt can be automatically positioned, and then cooperates with the clamping block of another clamping plate to squeeze the other end of the bolt, so that the bolt can be positioned in a horizontal state and can also be located at the axial position of the two clamping blocks, so that the positioning of the bolt can be more convenient and the positioning accuracy can be higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0016] Figure 2 It is a schematic diagram of the three-dimensional cross-sectional structure of the elastic support member of the utility model.

[0017] Figure 3 This is a front cross-sectional structural diagram of the splint of the utility model.

[0018] In the figure: 100, mounting seat; 101, receiving plate; 102, arc groove; 103, discharge port; 200, clamping plate; 201, positioning groove; 202, stop block; 203, clamping block; 204, rubber ring; 205, connecting shaft; 300, elastic support member; 301, connecting tube; 302, receiving chamber; 303, slider; 304, return spring; 305, connecting shaft. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] The utility model provides Figure 1-3 The clamping mechanism shown in the figure includes two mounting seats 100, a clamping plate 200 is provided between the two mounting seats 100, a receiving plate 101 is fixedly connected to the bottom between the two mounting seats 100, a circular arc groove 102 is provided on the top of the receiving plate 101, the cross section of the circular arc groove 102 is circular arc-shaped, and a discharge port 103 is provided at the bottom of the mounting seat 100, the discharge port 103 is connected to the circular arc groove 102, the receiving plate 101 cooperates with the circular arc groove 102 provided thereon, and can not only hold the magnetic powder falling from the bolt surface, but also hold the magnetic powder falling when the magnetic powder is poured onto the bolt surface. In addition, the receiving plate 1 01 can also hold bolts that fall accidentally, making it convenient to pick up the fallen bolts. At the same time, the setting of the discharge port 103 can facilitate the discharge of the magnetic powder collected in the arc groove 102, thereby achieving the purpose of facilitating the collection of magnetic powder. An elastic support member 300 for providing thrust to the splint member 200 is provided between the mounting seat 100 and the splint member 200. The setting of the elastic support member 300 not only supports the splint member 200, but also has an elastic expansion function, so that when the bolt is placed between the two splint members 200, the splint member 200 can be squeezed to move and expand, and the elastic support The deformation of the component 300 generates a reverse thrust acting on the splint component 200, so that the splint component 200 can clamp the bolt. In a preferred embodiment, the elastic support component 300 includes a connecting tube 301, one end of the connecting tube 301 is fixedly connected to the side wall of the mounting seat 100, and the other end of the connecting tube 301 is provided with a retractable connecting shaft 305, and a return spring 304 for automatically extending the connecting shaft 305 is provided between the connecting shaft 305 and the connecting tube 301, and a receiving chamber 302 connected to one end of the connecting tube 301 is provided inside the connecting tube 301, and a slider 303 is movably provided in the storing chamber 302, and the return spring 304 is fixedly set on the slider The cam 303 is fixedly connected to one end of the connecting shaft 305 on the side of the slider 303 facing away from the reset spring 304 between the cam 303 and the inner wall of the storage chamber 302. The support of the slider 303 by the storage chamber 302 allows the connecting shaft 305 to stably translate and retract at one end of the connecting tube 301. At the same time, the elastic deformation characteristics of the reset spring 304 are utilized so that when the connecting shaft 305 drives the slider 303 to move in the storage chamber 302, the reset spring 304 is squeezed, causing its elastic deformation to produce a reverse thrust. In this way, the connecting shaft 305 can exert a thrust on the splint 200, thereby realizing the clamping of the bolt by the splint 200.

[0021] In a preferred embodiment, the splint member 200 includes a clamping block 203 fixedly arranged at one end of the elastic support member 300, and a positioning groove 201 is provided on the side wall of the clamping block 203 located at one end of one of the elastic support members 300. The inner diameter of the positioning groove 201 gradually decreases toward the inner side of the clamping block 203, wherein the positioning groove 201 is preferably a hexagon that matches the end of the bolt. By using the positioning groove 201 to be recessed inward and the inner diameter to gradually decrease, it can adapt to the self-centering clamping of bolt heads of various sizes, so that the head of the bolt can be movably engaged in the center position of the positioning groove 201, so that one end of the bolt can be positioned at the center position of the side wall of the clamping block 203, and then cooperate with the clamping of the other clamping block 203, and the end face of the other end of the bolt is a vertical plane, so that it can be clamped by the two clamping blocks 203. When the bolt is tightened, horizontal clamping of the bolt is achieved, while the bolt is kept on the axial center line between the two clamping blocks 203; further, the clamping plate 200 also includes a stopper 202, and a rubber ring 204 is fixedly embedded in the middle of the stopper 202 on the side facing the clamping block 203. A connecting shaft 205 is movably inserted in the rubber ring 204, and the end of the connecting shaft 205 away from the stopper 202 is fixedly connected to the middle of the clamping block 203. The interlaced connection between the rubber ring 204 and the connecting shaft 205 is utilized to achieve an interference fit between the two. This not only enables the clamping block 203 to rotate at the side wall position of the stopper 202, but also facilitates positioning of the rotation position due to the friction resistance between the connecting shaft 205 and the inner wall of the rubber ring 204, so as to facilitate comprehensive flaw detection of the outer wall of the bolt.

[0022] On the other hand, the present invention further provides a bolt detection device, which includes the above-mentioned clamping mechanism.

[0023] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A clamping mechanism comprising two mounting seats (100), a clamping plate (200) being provided between the two mounting seats (100), and an elastic support member (300) being provided between the mounting seats (100) and the clamping plate (200) for providing thrust to the clamping plate (200), characterized in that: The clamping plate (200) comprises a clamping block (203) fixedly arranged at one end of the elastic support member (300), and a positioning groove (201) is provided on the side wall of the clamping block (203) at one end of the elastic support member (300), and the inner radial direction of the clamping block (203) gradually decreases.

2. A clamping mechanism according to claim 1, characterized in that: The splint member (200) further comprises a stopper (202), wherein a rubber ring (204) is fixedly embedded in the middle of the stopper (202) on one side facing the clamping block (203), a connecting shaft (205) is movably inserted into the rubber ring (204), and an end of the connecting shaft (205) facing away from the stopper (202) is fixedly connected to the middle of the clamping block (203).

3. A clamping mechanism according to claim 2, characterized in that: A material receiving plate (101) is fixedly connected to the bottom between the two mounting seats (100), and a circular arc groove (102) is provided on the top of the material receiving plate (101).

4. A clamping mechanism according to claim 3, characterized in that: The cross section of the circular arc groove (102) is in the shape of a circular arc, and a discharge port (103) is provided at the bottom of the mounting seat (100), and the discharge port (103) is communicated with the circular arc groove (102).

5. The clamping mechanism according to claim 1, characterized in that: The elastic support member (300) comprises a connecting tube (301), one end of the connecting tube (301) is fixedly connected to the side wall of the mounting seat (100), the other end of the connecting tube (301) is provided with a retractable connecting shaft (305), and a return spring (304) for automatically extending the connecting shaft (305) is provided between the connecting shaft (305) and the connecting tube (301).

6. A clamping mechanism according to claim 5, characterized in that: The connecting tube (301) is provided with a receiving chamber (302) in communication with one end thereof, a slider (303) is movably provided in the receiving chamber (302), the return spring (304) is fixedly arranged between the slider (303) and the inner wall of the receiving chamber (302), and the side of the slider (303) facing away from the return spring (304) is fixedly connected to one end of the connecting shaft (305).

7. A bolt detection device, characterized in that: The bolt detection device includes the clamping mechanism according to any one of claims 1 to 6.

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