A bolt anti-loosening structure for walkway slabs

Abstract

This utility model discloses a bolt anti-loosening structure for walkway slabs, including adjacent walkway slabs with an installation gap between them. A connecting plate is provided between the installation gaps, and a connecting screw is provided on the connecting plate. A cover plate is provided between the walkway slabs to cover the installation gaps, and the head of the connecting screw is exposed above the cover plate. An anti-loosening buckle is provided between the cover plate and the head of the connecting screw. The anti-loosening buckle is engaged with the cover plate, and the anti-loosening buckle has a bent portion. When the bent portion is in a folded state, it abuts against the head of the connecting screw and restricts its rotation.

Description

Technical Field

[0001] This utility model relates to the field of railway pedestrian walkway technology, specifically to a bolt anti-loosening structure for walkway slabs. Background Technology

[0002] In the design and construction of railway bridges, in order to meet the needs of inspection, maintenance and emergency evacuation, pedestrian walkway systems are usually set up on both sides of the bridge. The traditional pedestrian walkway structure mainly includes pedestrian walkway slabs (i.e., walkway slabs) and support brackets. The brackets are fixed on both sides of the main bridge structure, while the walkway slabs are erected on the outside of the bridge through the brackets to form a passage for people to pass through.

[0003] Existing pedestrian walkways mostly adopt an integrated molding design or a split design. While integrated pedestrian walkways have better overall integrity, their manufacturing cost is too high and they are inconvenient to transport and install. Split pedestrian walkways require cover plates to be placed at the joints of adjacent walkway slabs and fixed with bolts. However, railway bridges are subject to vibrations caused by train traffic and wind loads over a long period of time. The bolted cover plates are prone to loosening or even falling off, resulting in gaps at the joints of the walkway slabs. This not only affects the safety of pedestrians but may also pose a risk of falling objects from heights, threatening vehicles or pedestrians below the bridge. Utility Model Content

[0004] To address the technical problems existing in the background art, this utility model proposes a bolt anti-loosening structure for walkway slabs.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: A bolt anti-loosening structure for walkway slabs includes adjacent walkway slabs, with an installation gap between the walkway slabs, a connecting plate between the installation gap, a connecting screw on the connecting plate, and a cover plate covering the walkway slabs. The cover plate conceals the installation gap, and the head of the connecting screw is exposed above the cover plate. An anti-loosening buckle is provided between the cover plate and the head of the connecting screw. The anti-loosening buckle is locked on the cover plate and has a bent part. When the bent part is in the folded state, the bent part abuts against the head of the connecting screw and restricts its rotation.

[0006] Preferably, the cover plate has a first insertion groove for the head of the connecting screw to pass through, and a first limiting groove communicating with the first insertion groove. The size of the first limiting groove is smaller than the head of the connecting screw to prevent the head of the connecting screw from detaching from the cover plate. With the above improvement, during the installation of the cover plate, the head of the connecting screw is first inserted into the first insertion groove, and the cover plate is pulled so that the screw part of the head of the connecting screw is inserted into the first limiting groove, thereby preventing the connecting screw from detaching from the cover plate.

[0007] Preferably, the anti-loosening buckle has a second insertion groove for the head of the connecting screw to pass through, and a second limiting groove communicating with the second insertion groove. The size of the second limiting groove is smaller than the head of the connecting screw to prevent the head of the connecting screw from disengaging from the anti-loosening buckle. With the above improvement, during the installation of the anti-loosening buckle, the head of the connecting screw is first inserted into the second insertion groove, and the anti-loosening buckle is pulled so that the screw part of the head of the connecting screw is positioned in the second limiting groove, thereby preventing the connecting screw from disengaging from the anti-loosening buckle. Then, the connecting screw is locked. After locking, the bent part of the anti-loosening buckle is bent and abuts against the head of the connecting screw to restrict the rotation of the connecting screw and prevent the connecting screw from loosening.

[0008] Preferably, the bottom of the cover plate has a recessed positioning protrusion, so that an anti-rotation groove is formed on the cover plate, and the anti-loosening buckle is inserted into the anti-rotation groove. Through the above improvement, the positioning protrusion and the installation gap are used to cooperate to improve the stability of the cover plate installation, and the anti-loosening buckle is inserted into the anti-rotation groove to lock the anti-loosening buckle and restrict the anti-loosening buckle from rotating.

[0009] Preferably, the head of the connecting screw is shaped like a regular polygon, and the outer periphery of the head of the connecting screw forms an anti-rotation plane that abuts against the bend. Through the above improvements, the anti-rotation plane abuts against the bend, thereby restricting the rotation of the connecting screw.

[0010] Preferably, the anti-loosening buckle has a bending groove, and the bending part is folded along the bending groove. Through the above improvements, the convenience of bending the bending part is enhanced.

[0011] Preferably, the second insertion groove is formed on the bending portion, thereby improving the convenience of bending the bending portion when bending.

[0012] Preferably, the bottom of the walkway slab is provided with a support bracket, and the connecting plate is connected to both sides of the support bracket and is staggered. Through the above improvements, the reliability of the connection between the screw and the connecting plate is enhanced.

[0013] Preferably, the walkway slab has a positioning groove, and the connecting plate is placed in the positioning groove. Through the above improvements, the reliability of the connecting plate installation is enhanced.

[0014] Preferably, a plurality of connecting screws are provided in the installation gap, and the connecting screws are arranged at intervals along the length of the cover plate. Through the above improvements, the cover plate is connected at multiple positions to ensure the stability of the cover plate installation.

[0015] Compared with the prior art, the present invention has the following advantages and beneficial effects: During the installation of the cover plate, first place the cover plate on the walkway slab and cover the installation gap. Then, insert the anti-loosening clip between the cover plate and the head of the connecting screw, so that the anti-loosening clip is locked on the cover plate. After tightening the connecting screw, the bending part can be bent. The bending part abuts against the connecting screw, restricting its rotation, thereby preventing the connecting bolt from loosening and ensuring the reliability of the cover plate installation. Attached Figure Description

[0016] Figure 1 This is an isometric view of the overall structure of this utility model; Figure 2 This is a cross-sectional view of the walkway slab along its length according to this utility model; Figure 3 For the present utility model Figure 2 A magnified view of a section at point A in the middle; Figure 4 This is a cross-sectional view of the walkway slab of this utility model in the width direction; Figure 5 For the present utility model Figure 4 Schematic diagram of the structure at point B; Figure 6 This is a schematic diagram of the structure of the cover plate of this utility model; Figure 7 This is a schematic diagram of the anti-loosening buckle of this utility model in its normal state; Figure 8 This is a schematic diagram of the anti-loosening buckle in its folded state according to this utility model; In the diagram: 1. Walkway slab; 2. Installation gap; 3. Connecting plate; 4. Connecting screw; 5. Cover plate; 6. Anti-loosening buckle; 7. Bending part; 8. Support bracket; 1.1. First insertion groove; 1.2. Second insertion groove; 1.3. First limiting groove; 1.4. Second limiting groove; 1.5. Positioning protrusion; 1.6. Anti-rotation groove; 1.7. Anti-rotation plane; 1.8. Bending groove; 1.9. Positioning groove; Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] It should be understood that although the terms upper, middle, lower, top, one end, etc., appear in this document to describe various elements, these elements are not limited by these terms. These terms are only used to distinguish the elements from each other for ease of understanding, and are not used to define any directional or sequential restrictions.

[0019] like Figure 1-8 As shown, a bolt anti-loosening structure for a walkway slab 1 includes adjacent walkway slabs 1, with an installation gap 2 between the walkway slabs 1. A connecting plate 3 is provided between the installation gap 2, and a connecting screw 4 is provided on the connecting plate 3. A cover plate 5 is provided between the walkway slabs 1, which covers the installation gap 2, and the head of the connecting screw 4 is exposed above the cover plate 5.

[0020] Specifically, an anti-loosening buckle 6 is provided between the cover plate 5 and the head of the connecting screw 4. The anti-loosening buckle 6 is locked on the cover plate 5, and the anti-loosening buckle 6 has a bent part 7. When the bent part 7 is in the folded state, the bent part 7 abuts against the head of the connecting screw 4 and restricts its rotation.

[0021] During the installation of cover plate 5, cover plate 5 is first placed on walkway slab 1 to cover the installation gap 2. Then, anti-loosening buckle 6 is placed between the cover plate 5 and the head of connecting screw 4, so that anti-loosening buckle 6 is locked on cover plate 5. After locking connecting screw 4, bending part 7 can be bent. Bending part 7 abuts against connecting screw 4 to restrict its rotation, thereby preventing the connecting bolt from loosening and ensuring the reliability of cover plate 5 installation.

[0022] The entire anti-loosening structure has two anti-loosening measures. The anti-loosening buckle 6 is locked on the cover plate 5 to prevent the anti-loosening buckle 6 from rotating and constitutes the first anti-loosening measure. The bent part 7 of the anti-loosening buckle 6 abuts against the head of the connecting screw 4 and constitutes the second anti-loosening measure. Therefore, when the anti-loosening buckle 6 cannot rotate, the bent part 7 must always abut against the head of the connecting screw 4 to achieve the anti-loosening function.

[0023] Preferably, the head of the connecting screw 4 is a regular polygon, and the outer periphery of the head of the connecting screw 4 forms an anti-rotation plane 1.7 that abuts against the bending part 7. By abutting against the bending part 7, the rotation of the connecting screw 4 is restricted.

[0024] In addition, several connecting screws 4 are provided in the installation gap 2, and the connecting screws 4 are arranged at intervals along the length of the cover plate 5, connecting the cover plate 5 at multiple positions to ensure the stability of the cover plate 5 installation.

[0025] like Figures 1 to 6 As shown, as a further explanation of the embodiment of the cover plate 5, the cover plate 5 is provided with a first insertion groove 1.1 through which the head of the connecting screw 4 passes, and a first limiting groove 1.3 communicating with the first insertion groove 1.1. The size of the first limiting groove 1.3 is smaller than the head of the connecting screw 4, so as to restrict the head of the connecting screw 4 from detaching from the cover plate 5.

[0026] During the installation of the cover plate 5, first insert the head of the connecting screw 4 into the first insertion groove 1.1, and pull the cover plate 5 so that the screw part of the head of the connecting screw 4 is inserted into the first limiting groove 1.3, thereby preventing the connecting screw 4 from detaching from the cover plate 5.

[0027] Specifically, the bottom of the cover plate 5 has a recessed positioning protrusion 1.5, which forms an anti-rotation groove 1.6 on the cover plate 5. The anti-loosening buckle 6 is inserted into the anti-rotation groove 1.6. The positioning protrusion 1.5 cooperates with the installation gap 2 to improve the stability of the cover plate 5 installation. The anti-loosening buckle 6 is inserted into the anti-rotation groove 1.6 to lock the anti-loosening buckle 6, thereby restricting the rotation of the anti-loosening buckle 6.

[0028] like Figure 3 , Figure 5 , Figure 7 , Figure 8 As shown, in a further explanation of the embodiment of the anti-loosening buckle 6, the anti-loosening buckle 6 has a second insertion groove 1.2 through which the head of the connecting screw 4 passes, and a second limiting groove 1.4 communicating with the second insertion groove 1.2. The size of the second limiting groove 1.4 is smaller than the head of the connecting screw 4, so as to restrict the head of the connecting screw 4 from disengaging from the anti-loosening buckle 6.

[0029] During the installation of the anti-loosening clip 6, first insert the head of the connecting screw 4 into the second insertion groove 1.2, and pull the anti-loosening clip 6 so that the screw part of the head of the connecting screw 4 is inserted into the second limiting groove 1.4, thereby preventing the connecting screw 4 from coming off the anti-loosening clip 6. Then tighten the connecting screw 4. After tightening, bend the bent part 7 of the anti-loosening clip 6 and abut it against the head of the connecting screw 4 to restrict the rotation of the connecting screw 4 and prevent the connecting screw 4 from loosening.

[0030] Furthermore, the second insertion groove 1.2 is formed on the bending part 7, which greatly reduces the part that needs to be bent to lift the anti-loosening buckle 6, making it easier to bend the bending part 7.

[0031] Preferably, the anti-loosening buckle 6 has a bending groove 1.8, and the bending part 7 is folded along the bending groove 1.8, which improves the convenience of bending the bending part 7.

[0032] like Figures 1 to 4 As shown, as a further explanation of the installation method of the walkway slab 1, the bottom of the walkway slab 1 is provided with a support bracket 8, and the connecting plate 3 is connected to both sides of the support bracket 8 and is staggered. By staggering the connecting plates 3 and connecting bolts are connected to them respectively, the reliability of the connection between the connecting screw 4 and the connecting plate 3 is improved.

[0033] Furthermore, the walkway slab 1 has a positioning groove 1.9, and the connecting plate 3 is placed in the positioning groove 1.9 to improve the reliability of the installation of the connecting plate 3.

[0034] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A bolt-locking structure for walkway slabs, comprising adjacent walkway slabs (1), wherein an installation gap (2) is formed between the walkway slabs (1), characterized in that, A connecting plate (3) is provided between the installation gaps (2), and a connecting screw (4) is provided on the connecting plate (3). A cover plate (5) is provided between the walkway slabs (1), and the cover plate (5) covers the installation gaps (2), and the head of the connecting screw (4) is exposed above the cover plate (5). An anti-loosening buckle (6) is provided between the cover plate (5) and the head of the connecting screw (4). The anti-loosening buckle (6) is locked on the cover plate (5), and a bending part (7) is formed on the anti-loosening buckle (6). When the bending part (7) is in a folded state, the bending part (7) abuts against the head of the connecting screw (4) and restricts its rotation.

2. The anti-loosening structure for walkway slab bolts according to claim 1, characterized in that: The cover plate (5) has a first insertion groove (1.1) through which the head of the connecting screw (4) passes, and a first limiting groove (1.3) communicating with the first insertion groove (1.1). The size of the first limiting groove (1.3) is smaller than the head of the connecting screw (4) to restrict the head of the connecting screw (4) from detaching from the cover plate (5).

3. The anti-loosening structure for walkway slab bolts according to claim 1, characterized in that: The anti-loosening buckle (6) has a second insertion groove (1.2) through which the head of the connecting screw (4) passes, and a second limiting groove (1.4) communicating with the second insertion groove (1.2). The size of the second limiting groove (1.4) is smaller than the head of the connecting screw (4) to restrict the head of the connecting screw (4) from disengaging from the anti-loosening buckle (6).

4. The anti-loosening structure for walkway slab bolts according to claim 1, characterized in that: The bottom of the cover plate (5) has a recessed positioning protrusion (1.5) so that an anti-rotation groove (1.6) is formed on the cover plate (5) and the anti-loosening buckle (6) is inserted into the anti-rotation groove (1.6).

5. The anti-loosening structure for walkway slab bolts according to claim 1, characterized in that: The head of the connecting screw (4) is arranged in the shape of a regular polygon, and the outer periphery of the head of the connecting screw (4) forms an anti-rotation plane (1.7) that abuts against the bending part (7).

6. The anti-loosening structure for walkway slab bolts according to claim 1, characterized in that: The anti-loosening buckle (6) has a bending groove (1.8), and the bending part (7) is folded along the bending groove (1.8).

7. The anti-loosening structure for walkway slab bolts according to claim 3, characterized in that: The second insertion groove (1.2) is formed on the bent portion (7).

8. The anti-loosening structure for walkway slab bolts according to claim 1, characterized in that: The bottom of the walkway slab (1) is provided with a support bracket (8), and the connecting plate (3) is connected to both sides of the support bracket (8) and is staggered.

9. The anti-loosening structure for walkway slab bolts according to claim 8, characterized in that: The walkway slab (1) has a positioning groove (1.9), and the connecting plate (3) is placed in the positioning groove (1.9).

10. The anti-loosening structure for walkway slab bolts according to claim 1, characterized in that: A plurality of connecting screws (4) are provided in the installation gap (2), and the connecting screws (4) are arranged at intervals along the length of the cover plate (5).

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