A high-strength anti-loosening bolt sleeve with a double locking structure

Abstract

This invention provides a high-strength anti-loosening bolt sleeve with a double-locking structure, relating to the field of bolt sleeve technology. It includes: a mounting hole and a wire-locking groove; an inner cylinder inserted into the mounting hole; an expansion piece located in the middle of the inner cylinder; and a binding wire secured inside the wire-locking groove. The binding wire tightly connects the anti-loosening washer and the locking cap together through wire constraint. When the bolt is subjected to vibration or external force and shows a tendency to loosen, the binding wire generates a reverse tension, preventing the locking cap from rotating, thereby achieving secondary locking of the bolt and greatly improving the anti-loosening effect. This solves the problem that, in the current traditional anti-loosening bolt sleeves, which mainly rely on washers for anti-loosening treatment, the holding force of lightweight concrete on bolts is weak, and ordinary bolts are prone to loosening during long-term use due to vibration, temperature changes, and deformation of the components themselves.

Description

Technical Field

[0001] This invention relates to the field of bolt sleeve technology, and in particular to a high-strength anti-loosening bolt sleeve with a double locking structure. Background Technology

[0002] In the field of construction engineering, lightweight concrete is increasingly widely used in various building structures due to its advantages such as light weight, thermal insulation, and sound insulation. From non-load-bearing walls of high-rise residential buildings to roof insulation layers of large commercial buildings, lightweight concrete plays an important role. In these applications, bolt connection is a common connection method used to fix lightweight concrete components or connect other related parts. Most existing bolt sleeves for lightweight concrete only consider basic fastening functions and have obvious deficiencies in anti-loosening design. Some traditional sleeves cannot provide sufficient anti-loosening force when facing the special working conditions of lightweight concrete. In order to maintain the firmness of the bolt sleeve in lightweight concrete, a high-strength anti-loosening bolt sleeve is needed.

[0003] Currently, traditional anti-loosening bolt sleeves mainly rely on washers for anti-loosening treatment. However, because lightweight concrete has a weak holding force on bolts, ordinary bolts are prone to loosening during long-term use due to factors such as vibration, temperature changes, and deformation of the components themselves. Summary of the Invention

[0004] This invention relates to a high-strength anti-loosening bolt sleeve with a double-locking structure, comprising an expansion plate and a binding thread. When the compression nut rotates within the nut groove and moves downward along the bolt shank, it compresses the expansion plate, causing it to expand outward. The friction groove on the outer wall of the expansion plate increases the friction with the inner wall of the mounting hole, firmly fixing the inner sleeve within the mounting hole. The binding thread tightly connects the anti-loosening washer and the locking nut together through thread constraint. When the bolt is subjected to vibration or external force and tends to loosen, the binding thread generates a reverse tension, preventing the locking nut from rotating, thereby achieving secondary locking of the bolt and greatly improving the anti-loosening effect.

[0005] This invention provides a high-strength anti-loosening bolt sleeve with a double-locking structure, specifically comprising: a wall, a mounting hole, a connecting bolt, and a locking bolt cap; an inner sleeve is inserted into the mounting hole; an expansion piece is provided in the middle of the inner sleeve; the expansion piece is configured as an arc-shaped plate structure; a bolt-locking groove is formed at the bottom of the inner sleeve; a connecting block is fitted at the bottom of the connecting bolt; the connecting block is configured as a cylindrical structure, and hexagonal prism-shaped grooves for engaging with the inner sleeve are respectively formed on two sets of bottom surfaces of the connecting block; the outer wall of the connecting block is provided with a tool for assisting in holding the bolt in place. The friction layer is obtained; an anti-loosening washer is inserted into the mounting hole, and a butt bolt is inserted in the middle of the anti-loosening washer; an anti-loosening groove is provided at the bottom of the anti-loosening washer; a wire-locking groove is provided at the top of the anti-loosening washer; a binding wire is locked inside the wire-locking groove; a wire end structure for inserting into the wire-locking groove is fixed at the end of the binding wire; a binding head groove is provided on the outer wall of the locking cap, and a binding wire is locked in the thread of the binding head groove; the binding head groove is set as a ring-shaped structure, and grooves for constraining the wire end are provided at equal intervals at the top of the binding head groove.

[0006] Preferably, the wall is made of lightweight concrete; the wall has mounting holes; and the opening of the mounting holes has a chamfered angle.

[0007] Preferably, the inner tube is configured as a cylindrical structure, the interior of the inner tube is hollow, and the bottom of the inner tube has a hexagonal prism protrusion.

[0008] The bolt groove is configured as a hexagonal prism-shaped groove, and the bolt groove is connected to a circular through hole, which connects the bolt groove to the interior of the inner tube.

[0009] Preferably, the inner insert has a cap groove connected inside; the cap groove is configured as a circular annular structure and is connected to the inner wall of the top port of the inner insert.

[0010] Friction grooves are formed on the outer wall of the expansion plate.

[0011] Preferably, a connecting bolt is inserted inside the inner cylinder, and the bolt head is locked in the bolt groove;

[0012] The inner insert is rotatably connected to a compression nut, which is rotatably connected in a nut-mounting groove and threadedly connected to the bolt shank of the mating bolt.

[0013] Preferably, the anti-loosening washer is configured as a disc-shaped structure, the bottom of the anti-loosening washer is provided with a frustum-shaped protrusion for locking into the chamfer of the mounting hole, and a circular through hole for inserting the mating bolt is provided in the middle of the anti-loosening washer.

[0014] The anti-loosening groove is configured as an L-shaped groove.

[0015] Preferably, the wire-locking groove is configured as a disc-shaped groove, and the edge of the wire-locking groove is provided with slots at equal intervals for constraining and tightening the wire ends.

[0016] Preferably, a locking cap is fitted inside the wire slot, and the locking cap is threaded onto the mating bolt; the outer wall of the locking cap is provided with annular protrusions for opening side slots and binding head slots.

[0017] Preferably, the outer wall of the locking cap is provided with side slots at equal intervals, and the inside of the side slots is fitted with binding wires; the side slots are configured as arc-shaped grooves.

[0018] The high-strength anti-loosening bolt sleeve with a double locking structure provided by the present invention has the following beneficial effects:

[0019] The inner insert of this invention has an arc-shaped expansion plate in the middle. When the compression nut rotates in the nut groove and moves downward along the bolt rod, it compresses the expansion plate, causing it to expand outward. The friction groove on the outer wall of the expansion plate increases the friction with the inner wall of the mounting hole, firmly fixing the inner insert in the mounting hole and preventing the inner insert from shaking inside the wall, thus locking the bolt from the inside. The L-shaped anti-loosening groove at the bottom of the anti-loosening washer and the frustum-shaped protrusion at its bottom for locking into the chamfer of the mounting hole further restrict the displacement of the anti-loosening washer, making it fit tightly against the wall surface and around the bolt, preventing the bolt from loosening due to vibration or other factors.

[0020] In addition, the binding wire inside the wire slot has its end fixed in the slot at the edge of the wire slot. At the same time, the binding wire is inserted into the side slot and binding head slot on the outer wall of the locking bolt cap. This wire constraint method tightly connects the anti-loosening washer and the locking bolt cap together. When the bolt is subjected to vibration or external force and tends to loosen, the binding wire will generate a reverse pull to prevent the locking bolt cap from rotating, thereby achieving secondary locking of the bolt and greatly improving the anti-loosening effect.

[0021] In addition, the extrusion nut is rotatably connected in the nut slot, and the construction personnel can easily expand and contract the expansion plate by rotating the extrusion nut. The operation is simple and convenient, reducing the difficulty of construction, and making it easy to release the constraint by contraction, which is convenient for recycling in the demolition environment. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0023] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0024] In the attached diagram:

[0025] Figure 1A schematic diagram of a three-dimensional assembly structure according to an embodiment of the present invention is shown;

[0026] Figure 2 A schematic diagram of the three-dimensional assembly bottom view structure according to an embodiment of the present invention is shown;

[0027] Figure 3 A schematic diagram of the exploded structure according to an embodiment of the present invention is shown;

[0028] Figure 4 A schematic diagram of the exploded bottom view structure according to an embodiment of the present invention is shown;

[0029] Figure 5 A schematic diagram of a pre-embedded three-dimensional assembly structure according to an embodiment of the present invention is shown;

[0030] Figure 6 A schematic diagram of a through-state three-dimensional assembly structure according to an embodiment of the present invention is shown;

[0031] Figure 7 The invention illustrates an embodiment of the invention by Figure 6 A schematic diagram of the enlarged structure of section A;

[0032] Figure 8 A schematic diagram of the anti-loosening gasket assembly structure according to an embodiment of the present invention is shown;

[0033] Figure 9 The invention is illustrated by an embodiment of the invention. Figure 8 A schematic diagram of the enlarged structure of section B is shown.

[0034] Figure 10 A schematic diagram of the locking bolt cap assembly structure according to an embodiment of the present invention is shown;

[0035] Figure 11 The invention illustrates an embodiment of the invention by Figure 10 A schematic diagram of the enlarged structure of section C;

[0036] Figure 12 A schematic diagram of the inner insert assembly structure according to an embodiment of the present invention is shown.

[0037] List of reference numerals

[0038] 1. Wall; 101. Mounting hole;

[0039] 2. Inner insert; 201. Expansion plate; 202. Fastener groove; 203. Cap groove; 204. Friction groove;

[0040] 3. Butt bolts; 301, extrusion nuts;

[0041] 4. Connecting block;

[0042] 5. Anti-loosening gasket; 501. Anti-loosening groove; 502. Wire clamping groove; 503. Binding wire;

[0043] 6. Locking cap; 601. Side retainer groove; 602. Binding head groove. Detailed Implementation

[0044] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples.

[0045] Example 1: Please refer to Figures 1 to 12 :

[0046] This invention proposes a high-strength anti-loosening bolt sleeve with a double-locking structure, comprising: a wall 1, a mounting hole 101, a connecting bolt 3, and a locking cap 6; an inner insert 2 is inserted inside the mounting hole 101; an expansion plate 201 is provided in the middle of the inner insert 2; the expansion plate 201 is configured as an arc-shaped plate structure; the expansion plate 201 is used to expand under force while compressing the cap 301, thereby tightening the middle position of the mounting hole 101 to maintain the stability of the inner insert 2 and the connecting bolt 3 within the mounting hole 101; a bolt-locking groove 202 is provided at the bottom of the inner insert 2; a connecting block 4 is fitted at the bottom of the connecting bolt 3; the connecting block 4 is configured as a cylindrical structure, and hexagonal prism-shaped grooves for engaging with the inner insert 2 are respectively provided on the two sets of bottom surfaces of the connecting block 4; a friction layer for assisting in handling is provided on the outer wall of the connecting block 4; the connecting block 4 is used to connect the two sets of inner inserts 2 to facilitate the connection of the through-hole 101. 1. Two-way installation is performed to increase the practicality of the bolt sleeve; an anti-loosening washer 5 is inserted into the mounting hole 101, and a butt bolt 3 is inserted in the middle of the anti-loosening washer 5; an anti-loosening groove 501 is provided at the bottom of the anti-loosening washer 5; a wire-locking groove 502 is provided at the top of the anti-loosening washer 5; a binding wire 503 is locked inside the wire-locking groove 502; the wire end of the binding wire 503 is fixed with a wire end structure for insertion into the wire-locking groove 502; the binding wire 503 is used for... After the locking cap 6 is fixed, it is aligned and constrained to prevent loosening. The outer wall of the locking cap 6 is provided with a binding groove 602, and the binding groove 602 is threaded with a binding thread 503. The binding groove 602 is set as a ring structure, and the top of the binding groove 602 is provided with grooves at equal intervals for constraining the ends of the binding thread 503. The binding groove 602 is used to constrain the position of the ends of the binding thread 503 after it is tightened, so as to facilitate the movement of the hair tie.

[0047] Example 2: Based on Example 1, as follows Figures 1 to 12As shown, wall 1 is made of lightweight concrete; mounting holes 101 are provided on wall 1; the opening of mounting holes 101 has a chamfered edge; mounting holes 101 are used for installing the inner cylinder 2 and the connecting bolt 3; the inner cylinder 2 is a cylindrical structure with a hollow interior and a hexagonal prism-shaped protrusion at the bottom; the inner cylinder 2, together with other structures, fixes wall 1 to prevent loosening later; the bolt groove 202 is a hexagonal prism-shaped groove connected to a circular through hole, which connects the bolt groove 202 to the interior of the inner cylinder 2; the bolt groove 202 is used to constrain the bolt head position of the connecting bolt 3 to maintain the stability of the bolt during connection. The inner insert 2 has a cap groove 203 inside; the cap groove 203 is a circular structure and is connected to the inner wall of the top port of the inner insert 2; the cap groove 203 is used to assist in the installation of the compression nut 301, facilitating its adjustment; a friction groove 204 is provided on the outer wall of the expansion plate 201; the friction groove 204 is used to contact the inner wall of the mounting hole 101 after expansion, so as to increase the friction between the expansion plate 201 and the mounting hole 101; a connecting bolt 3 is inserted inside the inner insert 2, and the bolt head of the connecting bolt 3 is locked in the bolt groove 202; the connecting bolt 3 is used to connect with the compression nut 301 and the locking nut 6 through the screw while maintaining stability, so as to assist in the connection of the inner insert 2 to the wall 1; An internal rotatable nut 301 is rotatably connected to the nut groove 203 and threaded onto the bolt shank of the mating bolt 3. The nut 301, when connected to the bolt shank of the mating bolt 3, applies pressure to the expansion plate 201 through continuous rotation, forcing it to deform and thus tightening it against the inner wall of the mounting hole 101. The anti-loosening washer 5 is a disc-shaped structure. The bottom of the anti-loosening washer 5 has a frustum-shaped protrusion for engaging with the chamfered edge of the mounting hole 101, and a circular through hole for inserting the mating bolt 3 is provided in the middle. The anti-loosening washer 5 is used to contact the anti-loosening groove 501 with the chamfered edge of the mounting hole 101, thereby increasing the contact between the anti-loosening washer and the wall 1. Friction is used to prevent the sleeve from loosening; the anti-loosening groove 501 is an L-shaped groove; the anti-loosening groove 501 is used to increase the friction between the wall 1 and the anti-loosening gasket 5 to prevent the sleeve from loosening; the wire clamping groove 502 is a disc-shaped groove, and the edge of the wire clamping groove 502 is equally spaced with clamping grooves for restraining the wire ends of the binding wire 503; the wire clamping groove 502 is used to assist in the installation of the locking cap 6 while restraining the wire ends of the binding wire 503 to prevent them from loosening; the locking cap 6 is clamped inside the wire clamping groove 502, and the locking cap 6 is threaded onto the mating bolt 3; the outer wall of the locking cap 6 is provided with annular protrusions for opening the side clamping groove 601 and the binding head groove 602; the locking cap 6 is used for fixing by tightening the bolt;The outer wall of the locking cap 6 is provided with equally spaced side slots 601, and the binding wire 503 is held inside the side slots 601; the side slots 601 are set as arc-shaped grooves; the side slots 601 are used to assist the binding head groove 602 in restraining the binding wire 503 to prevent the locking cap 6 from loosening.

[0048] The specific usage and function of this embodiment: In this invention, when the mounting hole 101 is a non-through hole: the bolt head of the mating bolt 3 is inserted into the bolt groove 202 at the bottom of the inner insert 2. At this time, the mating bolt 3 is located inside the inner insert 2. Then, the inner insert 2 with the mating bolt 3 is inserted into the mounting hole 101. After installation, the compression nut 301 is rotated using a tool. Since the compression nut is threadedly connected to the bolt rod of the mating bolt 3, during rotation, the compression nut 301 moves downward along the bolt rod and moves downward with the compression nut 301. As the inner cylinder 2 moves downward, it compresses the expansion piece 201 located in the middle of the inner cylinder 2. The expansion piece 201 expands outward under pressure, and the friction groove 204 on its outer wall comes into close contact with the inner wall of the mounting hole 101, increasing friction and thus firmly fixing the inner cylinder 2 in the mounting hole 101, completing the installation and initial locking of the inner cylinder 2. The anti-loosening washer 5 is then inserted into the mounting hole 101, so that the frustum-shaped protrusion at the bottom of the anti-loosening washer 5 engages with the chamfered edge of the mounting hole 101, providing initial positioning. Due to the anti-loosening washer 5... A circular through hole is provided at the intermediate position. The connecting bolt 3 is passed through the circular through hole to ensure that the anti-loosening washer 5 is located between the surface of the wall 1 and the connecting bolt 3. At this time, the L-shaped anti-loosening groove 501 at the bottom of the anti-loosening washer 5 further restricts the displacement of the anti-loosening washer 5, preventing it from rotating or moving under vibration or other conditions. The end of the binding wire 503 is inserted into the slots equidistantly opened at the edge of the wire clamping groove 502 through its fixed wire end structure to fix the wire end. The locking cap 6 is then inserted into the wire clamping groove 502, and then the process is completed. The locking cap 6 is rotated so that it is threaded onto the mating bolt 3. During rotation, it is fixed by the thread. After fixing, the binding thread 503 is sequentially inserted into the side groove 601 and the binding head groove 602 on the outer wall of the locking cap 6. In this way, the anti-loosening washer 5 and the locking cap 6 are tightly connected together by the binding thread 503. When the bolt is subjected to vibration or external force and has a tendency to loosen, the binding thread 503 will generate a reverse tension to prevent the locking cap 6 from rotating, thereby effectively preventing the bolt from loosening.

[0049] When the mounting hole 101 is a through hole: After the inner insert 2 is connected to the connecting bolt 3, the two sets of inner insert 2 are inserted into the connecting block 4 through the hexagonal prism protrusion, thereby completing the connection of the two sets of inner insert 2. Then, the same installation method is used to achieve fixation and prevent loosening.

[0050] The following points should be noted in this article:

[0051] 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in general design.

[0052] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0053] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A high-strength anti-loosening bolt sleeve with a double-locking structure, comprising: The wall (1), mounting holes (101), connecting bolts (3), and locking caps (6) are characterized in that, An inner insert (2) is inserted into the mounting hole (101); An expansion piece (201) is provided at the middle position of the inner tube (2); the expansion piece (201) is configured as an arc-shaped sheet structure; The bottom of the inner tube (2) is provided with a fastening groove (202); the bottom of the connecting bolt (3) is fitted with a connecting block (4); the connecting block (4) is set as a cylindrical structure, and the two sets of bottom surfaces of the connecting block (4) are respectively provided with hexagonal prism grooves for connecting with the inner tube (2), and the outer wall of the connecting block (4) is provided with a friction layer for assisting in picking up. An anti-loosening washer (5) is inserted into the mounting hole (101), and a butt bolt (3) is inserted in the middle of the anti-loosening washer (5). The bottom of the anti-loosening gasket (5) is provided with an anti-loosening groove (501); The top of the anti-loosening pad (5) is provided with a wire-locking groove (502); The inside of the wire slot (502) is fitted with a binding wire (503); the end of the binding wire (503) is fixed with a wire end structure for insertion into the wire slot (502); The outer wall of the locking cap (6) is provided with a binding groove (602), and a binding thread (503) is inserted into the thread of the binding groove (602). The binding groove (602) is configured as a ring-shaped structure, and the top of the binding groove (602) is provided with grooves at equal intervals for constraining the ends of the binding wire (503); The inner tube (2) has a cap groove (203) inside; the cap groove (203) is set as a ring structure and is connected to the inner wall of the top port of the inner tube (2); The outer wall of the expansion plate (201) is provided with friction grooves (204); The inner insert (2) is fitted with a connecting bolt (3), and the bolt head of the connecting bolt (3) is locked in the bolt groove (202); The inner insert (2) is rotatably connected to a compression nut (301), and the compression nut (301) is rotatably connected in the nut groove (203), and the compression nut (301) is threadedly connected to the bolt of the mating bolt (3); The anti-loosening gasket (5) is configured as a disc-shaped structure. The bottom of the anti-loosening gasket (5) is provided with a frustum-shaped protrusion for locking into the chamfer of the mounting hole (101). A circular through hole for inserting the butt bolt (3) is provided in the middle position of the anti-loosening gasket (5). The anti-loosening groove (501) is configured as an L-shaped groove.

2. A high-strength anti-loosening bolt sleeve with a double-locking structure according to claim 1, characterized in that: The wall (1) is made of lightweight concrete; The wall (1) has an installation hole (101); the opening of the installation hole (101) has a chamfer.

3. A high-strength anti-loosening bolt sleeve with a double-locking structure according to claim 1, characterized in that: The inner tube (2) is configured as a cylindrical structure, the interior of the inner tube (2) is hollow, and the bottom of the inner tube (2) is provided with a hexagonal prism protrusion; The bolt groove (202) is configured as a hexagonal prism groove, and the bolt groove (202) is connected to a circular through hole. The bolt groove (202) is connected to the interior of the inner tube (2) through the circular through hole.

4. A high-strength anti-loosening bolt sleeve with a double-locking structure according to claim 1, characterized in that: The wire-locking groove (502) is configured as a disc-shaped groove, and the edge of the wire-locking groove (502) is provided with slots at equal intervals for restraining and tightening the ends of the wire (503).

5. A high-strength anti-loosening bolt sleeve with a double-locking structure according to claim 1, characterized in that: The locking nut (6) is locked inside the wire slot (502), and the locking nut (6) is threaded onto the mating bolt (3); the outer wall of the locking nut (6) is provided with annular protrusions for opening the side slot (601) and the head slot (602).

6. A high-strength anti-loosening bolt sleeve with a double-locking structure according to claim 1, characterized in that: The locking cap (6) has side slots (601) evenly spaced on its outer wall, and the side slots (601) are fitted with binding wires (503); the side slots (601) are set as arc-shaped grooves.

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