Anti-seismic locking bolt

Abstract

The utility model provides an anti-seismic check bolt, which relates to the technical field of bolts, and comprises a main screw rod piece, a check nut piece and a lower ring frame, the main screw rod piece is in threaded connection with the check nut piece, the lower ring frame penetrates through the lower part of the main screw rod piece, and a side threaded hole is formed in the side surface of the check nut piece in an inside-outside penetrating manner; a side axial sliding groove is formed in the middle of the side threaded hole, a side threaded rod is arranged in the side threaded hole in a threaded connection mode, an inner jacking block is rotationally arranged at the head end of the side threaded rod, a side limiting protruding block is arranged on the side face of the inner jacking block in a protruding mode, a lower connecting sliding groove is formed in the lower end section of the main screw rod piece in an inwards-concave mode, and a gasket is arranged on the main screw rod piece in a penetrating mode. The lock nut part pushes the inner jacking block through the side threaded rod to jack the main screw rod part, the firmness between the lock nut part and the main screw rod is enhanced, the anti-seismic and anti-loosening capacity is enhanced, and the problem that in long-time use, the screw rod and the nut rotate to cause looseness is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of bolts, in particular to a shock-resistant and anti-loosening bolt. Background Art

[0002] Bolts are fasteners commonly used in various fields such as machinery and construction. Bolts clamp the middle parts through screws and nuts. The reliability and safety of bolt connections are crucial.

[0003] In order to improve the anti-seismic and anti-loosening performance of existing bolts, elastic washers are arranged between the screw and the nut. The axial pressure of the elastic washers increases the resistance to the circumferential rotation of the screw and the nut. However, after long-term use, the elasticity of the elastic washers will decrease, the rotation resistance of the screw and the nut will decrease, and the screw and the nut will easily loosen. Summary of the invention

[0004] The disclosed embodiments relate to a shock-resistant and anti-loosening bolt, in which the anti-loosening nut pushes an inner tightening block to tighten a main screw rod through a side threaded rod, thereby increasing the friction between the anti-loosening nut and the main screw, enhancing the firmness between the anti-loosening nut and the main screw, and enhancing the shock-resistant and anti-loosening capabilities; an upper limit ring frame and the anti-loosening nut are slidably inserted, and the upper limit ring frame tightens the lower ring frame through an external tightening screw to fix the circumferential position; the upper limit ring frame restricts and fixes the anti-loosening nut in the circumferential direction, and the cooperation of multiple restricting and fixing operations further enhances the shock-resistant and anti-loosening capabilities of the anti-loosening nut.

[0005] According to a first aspect of the present disclosure, a seismic and anti-loosening bolt is provided, which specifically comprises: a main screw member, an anti-loosening nut member and a lower ring frame, wherein the main screw member is threadedly connected with the anti-loosening nut member, the lower part of the main screw member is penetrated by the lower ring frame, the lower end section of the main screw member is concavely provided with a lower connecting groove, and the main screw member is penetrated by a washer.

[0006] In at least some embodiments, a side threaded hole is formed inside and outside the side of the anti-loosening nut, a side axial groove is formed in the middle of the side threaded hole, a side threaded rod is threadedly provided in the side threaded hole, an inner tightening block is rotated at the head end of the side threaded rod, and a side limiting protrusion is protruded from the side of the inner tightening block.

[0007] In at least some embodiments, the side limiting protrusion and the side axial groove are slidably connected, the anti-loosening nut is located on the inner side of the side threaded hole, the head end of the inner tightening block is located on the inner side of the anti-loosening nut, the side threaded rod pushes the inner tightening block to move, and the inner tightening block moves along the side axial groove through the side limiting protrusion, the inner tightening block will not rotate circumferentially with the side threaded rod, and the anti-loosening nut pushes the inner tightening block through the side threaded rod to tighten the main screw member.

[0008] In at least some embodiments, an inner convex block is convexly provided on the inner side of the lower ring frame, an outer tightening screw is screwed on the side surface of the lower ring frame, and an upper limiting ring frame is rotatable circumferentially on the outer side of the lower ring frame.

[0009] In at least some embodiments, the inner convex block is slidably connected to the lower connecting chute, the leading end of the outer tightening screw of the lower ring frame penetrates to the outside of the inner convex block, and the leading end of the outer tightening screw is in tight contact with the lower connecting chute.

[0010] In at least some embodiments, the upper limiting ring frame and the anti-loosening nut member are axially slidably inserted and connected, the upper limiting ring frame and the anti-loosening nut member rotate synchronously in the circumferential direction, and when the upper limiting ring frame cannot rotate in the circumferential direction, the anti-loosening nut member cannot rotate and loosen in the circumferential direction either.

[0011] In at least some embodiments, an outer tightening screw is screwed on the side surface of the upper limiting ring frame, the leading end of the outer tightening screw of the upper limiting ring frame is in tight contact with the lower ring frame, the lower ring frame cannot move in the circumferential direction, and the upper limiting ring frame and the anti-loosening nut member cannot move in the circumferential direction either.

[0012] The present utility model provides an earthquake-resistant and anti-loosening bolt, which has the following beneficial effects:

[0013] The anti-loosening nut member pushes the inner tightening block through the side threaded rod to tighten the main screw member, increasing the friction force between the anti-loosening nut member and the main screw member, enhancing the firmness between the anti-loosening nut member and the main screw member, and enhancing the earthquake-resistant and anti-loosening ability.

[0014] The upper limiting ring frame and the anti-loosening nut member are slidably inserted. The upper limiting ring frame fixes the circumferential position by tightly pressing the lower ring frame through the outer tightening screw, and the upper limiting ring frame performs a circumferential limiting and fixing operation on the anti-loosening nut member, further enhancing the earthquake-resistant and anti-loosening ability of the anti-loosening nut member. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings of the embodiments will be briefly introduced below.

[0016] The drawings in the following description only relate to some embodiments of the present utility model and do not limit the present utility model.

[0017] In the drawings:

[0018] Figure 1 A schematic diagram showing the overall structure of the present application is shown;

[0019] Figure 2 A schematic diagram showing the structure of the main screw member of the present application is shown;

[0020] Figure 3 A schematic diagram showing the structure of the anti-loosening nut member of the present application is shown;

[0021] Figure 4 A schematic diagram showing the sectional structure of the lock - preventing nut part of the present application;

[0022] Figure 5 A schematic diagram showing the structure of the side threaded hole of the present application;

[0023] Figure 6 A schematic diagram showing the structure of the inner tightening block of the present application;

[0024] Figure 7 A schematic diagram showing the structure of the lower ring frame of the present application;

[0025] List of reference numerals

[0026] 1. Main screw part; 101. Lower connecting sliding groove; 102. Washer;

[0027] 2. Lock - preventing nut part; 201. Side threaded hole; 202. Side axial sliding groove; 203. Side threaded rod; 204. Inner tightening block; 205. Side limiting convex block;

[0028] 3. Lower ring frame; 301. Inner convex block; 302. Outer tightening screw; 303. Upper limiting ring frame. Detailed implementation manners

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are some, rather than all, of the embodiments of the present utility model. Based on the described embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0030] Embodiment 1: Please refer to Figures 1 to 7 :

[0031] The utility model provides an earthquake-resistant and anti-loosening bolt, which comprises a main screw member 1, an anti-loosening nut member 2 and a lower ring frame 3. An inner concave lower connection sliding groove 101 is arranged in the lower end section of the main screw member 1. The top end of the main screw member 1 is provided with a hexagonal block. A washer 102 is arranged through the main screw member 1. The main screw member 1 is threadedly connected with the anti-loosening nut member 2. The outer part of the anti-loosening nut member 2 is of a hexagonal structure. A threaded hole position is axially arranged in the center of the anti-loosening nut member 2. A side threaded hole 201 is opened through the inner and outer sides of the side surface of the anti-loosening nut member 2. A side axial sliding groove 202 is arranged in the middle of the side threaded hole 201. A side threaded rod 203 is screwed in the side threaded hole 201. An inner tightening block 204 is rotated at the first end of the side threaded rod 203. A side limiting convex block 205 is convexly arranged on the side surface of the inner tightening block 204. The lower part of the main screw member 1 penetrates through the lower ring frame 3. The lower ring frame 3 is of an annular structure and is not threadedly connected with the main screw member 1. An inner convex block 301 is convexly arranged on the inner side of the lower ring frame 3. An outer tightening screw 302 is screwed on the side surface of the lower ring frame 3. An upper limiting ring frame 303 is rotatably arranged on the outer circumference of the lower ring frame 3. The inner convex block 301 is slidably connected with the lower connection sliding groove 101. The first end of the outer tightening screw 302 of the lower ring frame 3 penetrates to the outside of the inner convex block 301. The first end of the outer tightening screw 302 is in tight contact with the lower connection sliding groove 101. The lower ring frame 3 is axially fixed by the tight contact between the outer tightening screw 302 and the lower connection sliding groove 101. The upper part of the upper limiting ring frame 303 is vertically and slidably attached to the outer vertical surface of the anti-loosening nut member 2. The upper limiting ring frame 303 is axially inserted and connected with the anti-loosening nut member 2. The upper limiting ring frame 303 and the anti-loosening nut member 2 rotate synchronously in the circumferential direction. When the upper limiting ring frame 303 cannot rotate in the circumferential direction, the anti-loosening nut member 2 cannot rotate and loosen in the circumferential direction either.

[0032] In the embodiment of the present disclosure, as Figure 3 , 4 , 5, and 6 show, the side limiting convex block 205 is slidably connected with the side axial sliding groove 202. The side limiting convex block 205 slides along the side axial sliding groove 202. The anti-loosening nut member 2 is located inside the side threaded hole 201. The first end of the inner tightening block 204 is located inside the anti-loosening nut member 2. The side threaded rod 203 pushes the inner tightening block 204 to move. The inner tightening block 204 moves along the side axial sliding groove 202 through the side limiting convex block 205. The inner tightening block 204 does not rotate circumferentially along with the side threaded rod 203. The anti-loosening nut member 2 pushes the inner tightening block 204 through the side threaded rod 203 to tighten the main screw member 1. The tightening state between the inner tightening block 204 and the main screw member 1 increases the friction force between the anti-loosening nut member 2 and the main screw member 1, and enhances the earthquake-resistant and anti-loosening ability between the anti-loosening nut member 2 and the main screw member 1.

[0033] In the embodiment of the present disclosure, as Figure 1 , 7As shown, an external tightening screw 302 is screwed on the side of the upper limit ring frame 303. The head of the external tightening screw 302 of the upper limit ring frame 303 is in tight contact with the lower ring frame 3. When the head of the external tightening screw 302 of the upper limit ring frame 303 is in tight contact with the lower ring frame 3, circumferential movement between the lower ring frame 3 and the upper limit ring frame 303 is not possible. Circumferential movement between the upper limit ring frame 303 and the anti-loosening nut part 2 is also not possible. The anti-loosening nut part 2 will not loosen by circumferential rotation. The upper limit ring frame 303 performs a circumferential restriction and fixation operation on the anti-loosening nut part 2, with multiple limit fixations, further enhancing the anti-seismic and anti-loosening ability of the anti-loosening nut part 2.

[0034] Embodiment 2, based on Embodiment 1, another anti-loosening nut part 2 is screwed below the lower ring frame 3 of the main screw part 1. The anti-loosening nut part 2 performs a fixation operation on the axial position of the lower ring frame 3, further enhancing the stability of the axial position of the lower ring frame 3.

[0035] The working principle of this embodiment: The threaded connection between the anti-loosening nut part 2 and the main screw part 1 performs an axial movement and fastening operation. The head of the inner tightening block 204 is a threaded groove. After the anti-loosening nut part 2 is tightly fixed in position, the side threaded rod 203 rotates. The side threaded rod 203 moves axially synchronously along the side threaded hole 201. The side threaded rod 203 pushes the inner tightening block 204 to move. The inner tightening block 204 moves along the side axial sliding groove 202 through the side limiting convex block 205. The inner tightening block 204 does not rotate circumferentially with the side threaded rod 203. The anti-loosening nut part 2 pushes the inner tightening block 204 through the side threaded rod 203 to tighten the main screw part 1. The tight state between the inner tightening block 204 and the main screw part 1 increases the friction between the anti-loosening nut part 2 and the main screw part 1, enhances the firmness between the anti-loosening nut part 2 and the main screw part 1, and enhances the anti-seismic and anti-loosening ability;

[0036] The upper limit ring frame 303 moves axially along the main screw part 1 with the lower ring frame 3. The lower ring frame 3 moves axially through the sliding of the inner convex block 301 and the lower connecting sliding groove 101. The lower ring frame 3 fixes its axial position by the tight contact between the external tightening screw 302 and the lower connecting sliding groove 101. When the upper limit ring frame 303 moves upward and axially slides and fits with the outer vertical surface of the anti-loosening nut part 2, the upper limit ring frame 303 fixes its circumferential position by tightening the lower ring frame 3 with the external tightening screw 302. Circumferential movement between the lower ring frame 3 and the upper limit ring frame 303 is not possible. Therefore, circumferential movement is not possible after the lower ring frame 3 and the upper limit ring frame 303 are fixed. Circumferential movement between the upper limit ring frame 303 and the anti-loosening nut part 2 is also not possible. The anti-loosening nut part 2 will not loosen by circumferential rotation. The upper limit ring frame 303 performs a circumferential restriction and fixation operation on the anti-loosening nut part 2, with multiple limit fixations, further enhancing the anti-seismic and anti-loosening ability of the anti-loosening nut part 2.

[0037] In this article, the following points need attention:

[0038] 1. The accompanying drawings of the embodiments of the present disclosure only relate to the structures involved in the embodiments of the present disclosure, and other structures can refer to the general design.

[0039] 2. Without conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0040] The above is only the specific implementation manner of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present disclosure can easily think of changes or substitutions, which should all be covered by the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A seismic and anti-loosening bolt, comprising: A main screw member (1), a locking nut member (2) and a lower ring frame (3); characterized in that the main screw member (1) is threadedly connected to the locking nut member (2), the lower part of the main screw member (1) is penetrated by the lower ring frame (3), a side threaded hole (201) is formed on the side of the locking nut member (2) and is penetrated inside and outside, a side axial groove (202) is formed in the middle of the side threaded hole (201), a side threaded rod (203) is threadedly provided on the side threaded hole (201), an inner tightening block (204) is rotatably provided at the head end of the side threaded rod (203), and a side limit protrusion (205) is protruded from the side of the inner tightening block (204).

2. The anti-seismic anti-loosening bolt according to claim 1, characterized in that: A lower connecting groove (101) is provided inwardly at the lower end section of the main screw member (1), and a washer (102) is provided through the main screw member (1).

3. The anti-seismic anti-loosening bolt according to claim 1, characterized in that: The side limiting protrusion (205) is slidably connected to the side axial sliding groove (202), the anti-loosening nut component (2) is located on the inner side of the side threaded hole (201), and the head end of the inner tightening block (204) is located on the inner side of the anti-loosening nut component (2).

4. The anti-seismic anti-loosening bolt according to claim 1, characterized in that: An inner convex block (301) is protrudingly provided on the inner side of the lower ring frame (3), an outer tightening screw (302) is screwed on the side of the lower ring frame (3), and an upper limit ring frame (303) is provided on the outer side of the lower ring frame (3) for circumferential rotation.

5. The anti-seismic anti-loosening bolt according to claim 4, characterized in that: The inner convex block (301) and the lower connecting slide groove (101) are slidably connected, and the head end of the outer tightening screw (302) of the lower ring frame (3) passes through the outer side of the inner convex block (301), and the head end of the outer tightening screw (302) and the lower connecting slide groove (101) are in tight contact.

6. The anti-seismic anti-loosening bolt according to claim 5, characterized in that: The upper limit ring frame (303) and the anti-loosening nut member (2) are axially slidably connected, and the upper limit ring frame (303) and the anti-loosening nut member (2) rotate synchronously in the circumferential direction.

7. The anti-seismic anti-loosening bolt according to claim 6, characterized in that: An external tightening screw (302) is screwed onto the side surface of the upper limit ring frame (303), and the head end of the external tightening screw (302) of the upper limit ring frame (303) is in tight contact with the lower ring frame (3).

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