High-strength lock bolt sleeve with double-locking structure

Abstract

The invention provides a high-strength anti-loosening bolt sleeve with a double-locking structure, and relates to the technical field of bolt sleeves, the high-strength anti-loosening bolt sleeve comprises a mounting hole and a wire clamping groove; an inner inserting cylinder is inserted into the mounting hole; an expansion piece is arranged in the middle of the inner inserting cylinder. A binding wire is clamped in the wire clamping groove; the anti-loose gasket and the locking bolt cap are tightly connected together through the tightening silk thread in a silk thread restraining mode, when the bolt tends to loosen due to vibration or external force, the tightening silk thread can generate reverse pulling force to prevent the locking bolt cap from rotating, and therefore secondary locking of the bolt is achieved, the anti-loose effect is greatly improved, and the anti-loose effect of the bolt is greatly improved. The problems that for an existing traditional anti-loosening bolt sleeve, anti-loosening treatment is mainly conducted through a gasket, but due to the fact that the holding force of lightweight concrete on the bolt is weak, a common bolt is affected by factors such as vibration, temperature change and self-deformation of components in the long-term use process, and the loosening phenomenon is prone to occurring are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of bolt sleeves, and in particular to a high-strength anti-loosening bolt sleeve with a double locking structure. Background Art

[0002] In the field of construction engineering, lightweight concrete is being increasingly widely used in various building structures due to its many advantages such as light weight, thermal insulation, and sound insulation. From the non-load-bearing walls of high-rise residential buildings to the roof insulation layer of large commercial buildings, lightweight concrete plays an important role. In these application scenarios, bolt connection is a common connection method used to fix lightweight concrete components or connect other related components. Most of the existing bolt sleeves for lightweight concrete only consider the basic fastening function 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 keep the bolt sleeve firm in lightweight concrete, a high-strength anti-loosening bolt sleeve is required.

[0003] As for the current traditional anti-loosening bolt sleeves, they mainly use gaskets to prevent loosening. However, since lightweight concrete has a weak grip on bolts, ordinary bolts are easily loosened during long-term use due to the influence of factors such as vibration, temperature changes, and the deformation of the components themselves. Summary of the invention

[0004] The present invention relates to a high-strength anti-loosening bolt sleeve with a double locking structure, which is provided with an expansion sheet and a tightening wire. When the extrusion nut rotates in the nut installation groove and moves downward along the bolt rod of the docking bolt, the expansion sheet is squeezed to expand outward, and the friction groove on the outer wall of the expansion sheet increases the friction with the inner wall of the installation hole, and the inner insert tube is firmly fixed in the installation hole. The tightening wire tightly connects the anti-loosening gasket and the locking bolt cap together by wire constraint. When the bolt is vibrated or has a tendency to loosen due to external force, the tightening wire will generate reverse pulling force to prevent the locking bolt cap from rotating, thereby realizing secondary locking of the bolt and greatly improving the anti-loosening effect.

[0005] The present invention provides a high-strength anti-loosening bolt sleeve with a double locking structure, specifically comprising: a wall, a mounting hole, a butt bolt and a locking bolt cap; an inner insert tube is inserted into the mounting hole; an expansion sheet is provided at the middle position of the inner insert tube; the expansion sheet is arranged in an arc-shaped sheet structure; a bolt fixing groove is provided at the bottom of the inner insert tube; a butt block is sleeved at the bottom of the butt bolt; the butt block is arranged in a cylindrical structure, and two groups of bottom surfaces of the butt block are respectively provided with hexagonal columnar grooves for connecting with the inner insert tube, and the outer wall of the butt block is provided with a for assisting in taking The friction layer is taken; an anti-loosening gasket is inserted in the mounting hole, and a docking bolt is inserted in the middle position of the anti-loosening gasket; an anti-loosening groove is provided at the bottom of the anti-loosening gasket; a wire clamping groove is provided at the top of the anti-loosening gasket; a binding wire is clamped inside the wire clamping groove; a wire end position of the binding wire is fixedly connected with a wire end structure for inserting into the wire clamping groove; a binding head groove is provided on the outer wall of the locking bolt cap, and a binding wire is clamped in the thread of the binding head groove; the binding head groove is arranged in a circular ring structure, and grooves for constraining the ends of the binding wires are equidistantly provided on the top of the binding head groove.

[0006] Preferably, the wall is made of lightweight concrete; a mounting hole is provided on the wall; and an oblique chamfer is provided at the opening position of the mounting hole.

[0007] Preferably, the inner insert tube is configured as a cylindrical structure, the interior of the inner insert tube is configured as a hollow state, and a hexagonal protrusion is provided at the bottom of the inner insert tube; The bolt fixing groove is configured as a hexagonal column-shaped groove, the bolt fixing groove is connected with a circular through hole, and the bolt fixing groove is connected to the interior of the inner insert tube via the circular through hole.

[0008] Preferably, the inner part of the inner insert tube is connected with a capping groove; the capping groove is set as a circular ring structure, and the capping groove is connected to the inner wall of the top port of the inner insert tube; The outer wall of the expansion piece is provided with a friction groove.

[0009] Preferably, a docking bolt is inserted into the inner insert tube, and the bolt head of the docking bolt is stuck in the bolt fixing groove; An extrusion nut is rotatably connected in the inner insert cylinder, and the extrusion nut is rotatably connected in the nut mounting groove, and the extrusion nut is threadedly connected to the bolt rod of the butt bolt.

[0010] Preferably, the anti-loosening gasket is set as a disc-shaped structure, the bottom of the anti-loosening gasket is provided with a frustum-shaped protrusion for clamping in the chamfer of the mounting hole, and the middle position of the anti-loosening gasket is provided with a circular through hole for inserting the docking bolt; The anti-loosening groove is configured as an L-shaped groove.

[0011] Preferably, the wire clamping groove is configured as a disc-shaped groove, and clamping grooves for restraining and binding the ends of the wires are equidistantly provided at the edge of the wire clamping groove.

[0012] Preferably, a locking bolt cap is clamped inside the wire clamping groove, and the locking bolt cap is threadedly connected to the docking bolt; an annular protrusion for opening a side clamping groove and a head binding groove is provided on the outer wall of the locking bolt cap.

[0013] Preferably, side slots are equidistantly formed on the outer wall of the locking bolt cap, and binding wires are clamped inside the side slots; the side slots are configured as arc-shaped grooves.

[0014] The high-strength anti-loosening bolt sleeve with a double locking structure provided by the present invention has the following beneficial effects: The inner insert tube of the present invention is provided with an arc-shaped expansion piece in the middle position. When the extrusion nut rotates in the nut installation groove and moves downward along the bolt rod of the docking bolt, the expansion piece will be squeezed to expand outward. The friction groove on the outer wall of the expansion piece increases the friction with the inner wall of the mounting hole, firmly fixing the inner insert tube in the mounting hole, preventing the inner insert tube from shaking inside the wall, and locking the bolt from the inside; the L-shaped anti-loosening groove at the bottom of the anti-loosening gasket and the frustum-shaped protrusion at its bottom for clamping in the chamfer of the mounting hole further limit the displacement of the anti-loosening gasket, so that it fits tightly on the wall surface and around the docking bolt, preventing the bolt from loosening due to factors such as vibration.

[0015] In addition, the ends of the binding wires in the wire slot are fixed in the slots at the edge of the wire slot, and at the same time, the binding wires are inserted into the side slots and the binding head slots on the outer wall of the locking bolt cap. This wire restraint method tightly connects the anti-loosening gasket and the locking bolt cap together. When the bolt tends to loosen due to vibration or external force, the binding wires will generate reverse pulling force to prevent the locking bolt cap from rotating, thereby achieving secondary locking of the bolt and greatly improving the anti-loosening effect.

[0016] In addition, the extrusion nut is rotatably connected in the cap groove, and the construction workers can easily expand and contract the expansion piece by rotating the extrusion nut. The operation is simple and convenient, which reduces the difficulty of construction, makes it easy to release constraints through contraction, and facilitates recycling in the demolition environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0018] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0019] In the attached picture: Figure 1 A schematic diagram of a three-dimensional assembly structure according to an embodiment of the present invention is shown; Figure 2 A schematic diagram of a bottom-up structure of a three-dimensional assembly according to an embodiment of the present invention is shown; Figure 3 A schematic diagram showing a decomposition structure according to an embodiment of the present invention is shown; Figure 4 A schematic diagram showing an exploded bottom-up structure according to an embodiment of the present invention is shown; Figure 5 A schematic diagram of a three-dimensional assembly structure in a pre-embedded state according to an embodiment of the present invention is shown; Figure 6 A schematic diagram of a three-dimensional assembly structure in a through state according to an embodiment of the present invention is shown; Figure 7 The embodiment according to the present invention is shown. Figure 6 The schematic diagram of the enlarged structure of part A is shown; Figure 8 A schematic diagram of an anti-loosening gasket assembly structure according to an embodiment of the present invention is shown; Fig. 9 The embodiment according to the present invention is shown. Figure 8 The schematic diagram of the enlarged structure of part B is shown; Fig.10 A schematic diagram showing a locking bolt cap assembly structure according to an embodiment of the present invention is shown; Fig.11 The embodiment according to the present invention is shown. Fig.10 Schematic diagram of the enlarged structure of the C part drawn out; Fig.12 A schematic diagram of an inner insert sleeve assembly structure according to an embodiment of the present invention is shown.

[0020] Reference numerals list 1. Wall; 101. Installation hole; 2. Inner insert; 201. Expansion sheet; 202. Bolt fixing groove; 203. Capping groove; 204. Friction groove; 3. Butt bolt; 301, extrusion nut; 4. Docking block; 5. Anti-loosening gasket; 501. Anti-loosening groove; 502. Wire clamping groove; 503. Tightening wire; 6. Locking bolt cap; 601. Side card slot; 602. Binding head slot. DETAILED DESCRIPTION

[0021] The embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings and examples.

[0022] Example 1: Please refer to Figures 1 to 12 : The present invention proposes a high-strength anti-loosening bolt sleeve with a double locking structure, comprising: a wall 1, a mounting hole 101, a butt bolt 3 and a locking bolt cap 6; an inner insert tube 2 is inserted into the mounting hole 101; an expansion sheet 201 is provided at the middle position of the inner insert tube 2; the expansion sheet 201 is set as an arc-shaped sheet structure; the expansion sheet 201 is used to expand under force while squeezing the nut 301, so as to tighten the middle position of the mounting hole 101 to maintain the stability of the inner insert tube 2 and the butt bolt 3 in the mounting hole 101; a bolt fixing groove 202 is provided at the bottom of the inner insert tube 2; a butt block 4 is sleeved at the bottom of the butt bolt 3; the butt block 4 is set as a cylindrical structure, and two groups of bottom surfaces of the butt block 4 are respectively provided with hexagonal prism-shaped grooves for connecting with the inner insert tube 2, and a friction layer for assisting in taking is provided on the outer wall of the butt block 4; the butt block 4 is used to connect the two groups of inner insert tubes 2 to facilitate the through-type mounting hole 10 1, a two-way installation process is performed to increase the practicality of the bolt sleeve; an anti-loosening gasket 5 is inserted into the mounting hole 101, and a butt bolt 3 is inserted in the middle position of the anti-loosening gasket 5; an anti-loosening groove 501 is provided at the bottom of the anti-loosening gasket 5; a wire clamping groove 502 is provided at the top of the anti-loosening gasket 5; a binding wire 503 is clamped inside the wire clamping groove 502; a wire head structure for inserting into the wire clamping groove 502 is fixed at the wire head position of the binding wire 503; the binding wire 503 is used to After the locking bolt cap 6 is fixed, it is aligned and constrained to prevent it from loosening; a binding head groove 602 is provided on the outer wall of the locking bolt cap 6, and a binding wire 503 is clamped in the thread of the binding head groove 602; the binding head groove 602 is arranged in a circular ring structure, and grooves for constraining the ends of the binding wire 503 are equidistantly provided on the top of the binding head groove 602; the binding head groove 602 is used to constrain the position of the ends of the binding wire 503 after the binding is completed, so as to facilitate the sending of the hair rope.

[0023] Embodiment 2: Based on Embodiment 1, Figures 1 to 12As shown, the wall 1 is made of lightweight concrete; a mounting hole 101 is provided on the wall 1; an oblique chamfer is provided at the opening position of the mounting hole 101; the mounting hole 101 is used to install the inner insert tube 2 and the docking bolt 3; the inner insert tube 2 is set to a cylindrical structure, the interior of the inner insert tube 2 is set to a hollow state, and a hexagonal prism-shaped protrusion is provided at the bottom of the inner insert tube 2; the inner insert tube 2 is used to fix the wall 1 in conjunction with other structures to avoid loosening in the later stage; the fixing bolt groove 202 is set to a hexagonal prism-shaped groove, and the fixing bolt groove 202 is connected with a circular through hole, and the fixing bolt groove 202 is connected to the interior of the inner insert tube 2 through the circular through hole; the fixing bolt groove 202 is used to constrain the bolt head position of the docking bolt 3, so as to facilitate the stability of the bolt rod during the connection process. The inner wall of the inner plug tube 2 is connected with a cap groove 203; the cap groove 203 is set as a circular ring structure, and the cap groove 203 is connected to the inner wall of the top port of the inner plug tube 2; the cap groove 203 is the same as the auxiliary installation of the extrusion bolt cap 301, which is convenient for adjustment; the outer wall of the expansion piece 201 is provided with a friction groove 204; the friction groove 204 is used to contact the inner wall of the mounting hole 101 after expansion to increase the friction between the expansion piece 201 and the mounting hole 101; the inner wall of the inner plug tube 2 is inserted with a docking bolt 3, and the bolt head position of the docking bolt 3 is stuck in the bolt groove 202; the docking bolt 3 is used to maintain stability while connecting the screw with the extrusion nut 301 and the locking bolt cap 6 to assist in connecting the wall 1; the inner plug tube 2 The inner part is rotatably connected with an extrusion nut 301, and the extrusion nut 301 is rotatably connected in the nut mounting groove 203, and the extrusion nut 301 is threadedly connected to the bolt rod of the docking bolt 3; the extrusion nut 301 is used to apply pressure to the expansion sheet 201 by continuous rotation when connecting with the screw rod part of the docking bolt 3, so as to force it to deform, thereby tightening the inner wall of the mounting hole 101; the anti-loosening gasket 5 is set as a disc-shaped structure, and the bottom of the anti-loosening gasket 5 is provided with a frustum-shaped protrusion for clamping in the chamfer of the mounting hole 101, and the middle position of the anti-loosening gasket 5 is provided with a circular through hole for inserting the docking bolt 3; the anti-loosening gasket 5 is used to cooperate with the anti-loosening groove 501 to contact the chamfered position of the mounting hole 101, so as to help increase the gap with the wall 1 The anti-loosening groove 501 is set as 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 set as a disc-shaped groove, and the edge position of the wire clamping groove 502 is equidistantly provided with clamping grooves for constraining the ends of the binding wires 503; the wire clamping groove 502 is used to assist in the installation of the locking bolt cap 6 while constraining the position of the ends of the binding wires 503 to prevent them from loosening; the locking bolt cap 6 is clamped inside the wire clamping groove 502, and the locking bolt cap 6 is threadedly connected to the docking bolt 3; the outer wall of the locking bolt cap 6 is provided with an annular protrusion for opening the side clamping groove 601 and the binding head groove 602; the locking bolt cap 6 is used to fix by tightening the bolts;The outer wall of the locking bolt cap 6 is provided with side clamping grooves 601 at equal intervals, and the inside of the side clamping grooves 601 is clamped with the binding wire 503; the side clamping grooves 601 are set as arc-shaped grooves; the side clamping grooves 601 are used to assist the binding head grooves 602 to constrain the binding wire 503 to prevent the locking bolt cap 6 from loosening.

[0024] Specific usage and function of this embodiment: In the present invention, when the mounting hole 101 is a non-through hole: the bolt head of the docking bolt 3 is inserted into the bolt fixing groove 202 at the bottom of the inner insert tube 2. At this time, the docking bolt 3 is located inside the inner insert tube 2. Then, the inner insert tube 2 with the docking bolt 3 is inserted into the mounting hole 101. After installation, the extrusion nut 301 is rotated by a tool. Since the extrusion nut is threadedly connected to the bolt rod of the docking bolt 3, during the rotation process, the extrusion nut 301 moves downward along the bolt rod, and as the extrusion nut 301 is rotated, the extrusion nut 301 moves downward along the bolt rod. 1 moves downward, which will squeeze the expansion piece 201 located in the middle of the inner insert tube 2. After being squeezed, the expansion piece 201 expands outward, and the friction groove 204 on its outer wall is in close contact with the inner wall of the mounting hole 101, increasing the friction force, thereby firmly fixing the inner insert tube 2 in the mounting hole 101, completing the installation and preliminary locking of the inner insert tube 2, and inserting the anti-loosening gasket 5 into the mounting hole 101, so that the frustum-shaped protrusion at the bottom of the anti-loosening gasket 5 is stuck in the chamfer of the mounting hole 101, which plays a preliminary positioning role. A circular through hole is opened at the intermediate position, and the butt bolt 3 is passed through the circular through hole to ensure that the anti-loosening gasket 5 is located between the surface of the wall 1 and the butt bolt 3. At this time, the L-shaped anti-loosening groove 501 at the bottom of the anti-loosening gasket 5 further limits the displacement of the anti-loosening gasket 5 to prevent it from rotating or moving under vibration and the like. The thread end of the binding wire 503 is inserted into the card groove equidistantly opened at the edge position of the card groove 502 through the fixed thread end structure thereof to fix the thread end, and the locking bolt cap 6 is carded into the card groove 502, and then the locking bolt cap 6 is carded into the card groove 502. The locking bolt cap 6 is rotated by the tool to be threadedly connected to the docking bolt 3. During the rotation process, it is fixed by the thread, and after being fixed, the binding wire 503 is sequentially inserted into the side clamping groove 601 and the binding head groove 602 on the outer wall of the locking bolt cap 6. In this way, the anti-loosening gasket 5 and the locking bolt cap 6 are tightly connected together by the binding wire 503. When the bolt is vibrated or has a tendency to loosen due to external force, the binding wire 503 will generate a reverse pulling force to prevent the locking bolt cap 6 from rotating, thereby effectively preventing the bolt from loosening. When the mounting hole 101 is a through hole: after the inner insert tube 2 is connected with the docking bolt 3, the two sets of inner insert tubes 2 are inserted into the docking block 4 through the hexagonal protrusions to complete the connection of the two sets of inner insert tubes 2, and then the same installation method is performed to achieve fixation and anti-loosening.

[0025] In this article, there are a few points to note: 1. The drawings of the embodiments of the present disclosure only involve structures related to the embodiments of the present disclosure, and other structures may refer to general designs.

[0026] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to obtain new embodiments.

[0027] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A high-strength anti-loosening bolt sleeve with a double locking structure, comprising: A wall (1), a mounting hole (101), a butt bolt (3) and a locking bolt cap (6); characterized in that: An inner insert tube (2) is inserted into the interior of the mounting hole (101); An expansion sheet (201) is provided in the middle of the inner insert tube (2); the expansion sheet (201) is configured as an arc-shaped sheet structure; The bottom of the inner insert tube (2) is provided with a bolt fixing groove (202); The bottom of the docking bolt (3) is sleeved with a docking block (4); the docking block (4) is arranged as a cylindrical structure, two groups of bottom surfaces of the docking block (4) are respectively provided with hexagonal columnar grooves for connecting with the inner insert tube (2), and the outer wall of the docking block (4) is provided with a friction layer for assisting in taking; An anti-loosening gasket (5) is inserted into the mounting hole (101), and a butt bolt (3) is inserted in the middle of the anti-loosening gasket (5); The bottom of the anti-loosening gasket (5) is provided with an anti-loosening groove (501); A wire retaining groove (502) is provided on the top of the anti-loosening gasket (5); A binding thread (503) is clamped inside the wire clamping slot (502); a thread end structure for being inserted into the wire clamping slot (502) is fixedly connected at the thread end of the binding thread (503); The outer wall of the locking bolt cap (6) is provided with a head binding groove (602), and a binding thread (503) is clamped in the thread of the head binding groove (602); The head binding groove (602) is configured as a circular ring structure, and grooves for constraining the ends of the binding wires (503) are equidistantly provided at the top of the head binding groove (602).

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) is provided with a mounting hole (101); the opening position of the mounting hole (101) is provided with an oblique chamfer.

3. A high-strength anti-loosening bolt sleeve with a double locking structure according to claim 1, characterized in that: The inner insert tube (2) is configured as a cylindrical structure, the interior of the inner insert tube (2) is configured as a hollow state, and a hexagonal column-shaped protrusion is provided at the bottom of the inner insert tube (2); The bolt fixing groove (202) is configured as a hexagonal column-shaped groove, the bolt fixing groove (202) is connected to a circular through hole, and the bolt fixing groove (202) is connected to the interior of the inner insert tube (2) via 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 inner part of the inner insert tube (2) is connected with a capping groove (203); the capping groove (203) is arranged as a circular ring structure, and the capping groove (203) is connected to the inner wall of the top port of the inner insert tube (2); A friction groove (204) is provided on the outer wall of the expansion sheet (201).

5. The high-strength anti-loosening bolt sleeve with a double locking structure according to claim 1, characterized in that: A docking bolt (3) is inserted into the inner insert cylinder (2), and the bolt head of the docking bolt (3) is stuck in the bolt fixing groove (202); The inner insert cylinder (2) is rotatably connected with an extrusion nut (301), and the extrusion nut (301) is rotatably connected in the nut mounting groove (203), and the extrusion nut (301) is threadedly connected to the bolt rod of the butt bolt (3).

6. A high-strength anti-loosening bolt sleeve with a double locking structure according to claim 1, characterized in that: 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 in the chamfer of the mounting hole (101), and the middle position of the anti-loosening gasket (5) is provided with a circular through hole for inserting the butt bolt (3); The anti-loosening groove (501) is configured as an L-shaped groove.

7. The high-strength anti-loosening bolt sleeve with a double locking structure according to claim 1, characterized in that: The wire clamping groove (502) is configured as a disc-shaped groove, and clamping grooves for restraining the ends of the binding wires (503) are equidistantly provided at the edge of the wire clamping groove (502).

8. The high-strength anti-loosening bolt sleeve with a double locking structure according to claim 1, characterized in that: A locking bolt cap (6) is clamped inside the wire clamping groove (502), and the locking bolt cap (6) is threadedly connected to the docking bolt (3); an annular protrusion for forming a side clamping groove (601) and a head binding groove (602) is provided on the outer wall of the locking bolt cap (6).

9. The high-strength anti-loosening bolt sleeve with a double locking structure according to claim 1, characterized in that: The outer wall of the locking bolt cap (6) is provided with side clamping grooves (601) at equal intervals, and a binding thread (503) is clamped inside the side clamping groove (601); the side clamping groove (601) is configured as an arc-shaped groove.

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