Self-locking grounding wire clamp for steel rail

Abstract

The utility model discloses a self-locking grounding wire clamp for a steel rail, which relates to the technical field of grounding devices and comprises a rod body, a clamping block, a locking nut, a locking mechanism arranged on the clamping block and a locking sleeve matched with the locking mechanism. The locking sleeve is buckled on the outer side of the locking nut and matched with the clamping block, a rotation stopping boss used for clamping a wire nose is arranged on one side, close to the locking nut, of the clamping block, and the wire lug protection shell is arranged on the outer side of the connecting portion of the grounding cable and the wire nose in a covering mode. The clamping block and the locking sleeve are matched to form the wire lug protection shell, the wire lug is clamped on the inner side of the rotation stopping boss, it is ensured that the wire lug does not shake relatively when the nut is screwed or loosened, and fatigue fracture of a cable is avoided; the locking sleeve can completely cover the compression nut, and the nut cannot be loosened in any mode without unlocking, so that the reliability of the grounding wire clamp is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of grounding device technology, specifically to a self-locking grounding clamp for rails. Background Technology

[0002] During railway electrification maintenance, grounding devices are used to connect grounding wires between the equipment and rail ends to ensure safety during operations. In existing grounding devices, the connection between the grounding cable and the lug is usually exposed to the air, making it susceptible to moisture and dust, which can affect connection reliability. Furthermore, when tightening the nut, friction causes the lug to rotate with the nut, resulting in the lug swinging back and forth and bending the cable at the connection point. Over time, this can lead to fatigue fracture at the connection. Similarly, dragging the cable can cause the lug to rotate, potentially loosening the nut and causing poor grounding. Utility Model Content

[0003] The purpose of this utility model is to provide a self-locking grounding clamp for rails, which aims to solve the problem of poor grounding caused by the lack of protective measures between the grounding cable and the lug in the above-mentioned background art.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: a self-locking grounding clamp for rails, comprising a rod body, a locking block sleeved on the rod body and slidably engaged with the rod body, a locking nut threaded with the rod body and abutting one end of the locking block, a locking mechanism provided on the locking block, and a locking sleeve cooperating with the locking mechanism. The locking sleeve is sleeved on one end of the rod body and slidably engaged with the rod body. The locking sleeve is fastened to the outside of the locking nut and cooperates with the locking block. The locking block has an anti-rotation boss for clamping the lug on the side near the locking nut. It also includes a wire lug protective shell covering the outside of the connection between the grounding cable and the lug. The wire lug protective shell is composed of two semi-cylindrical cylinders that can form a complete cylindrical structure and a waterproof cap. The two semi-cylindrical cylinders are respectively provided on the side walls of the locking block and the locking sleeve. The waterproof cap is fitted on the top of the cylindrical body composed of the two semi-cylindrical cylinders.

[0005] Furthermore, the anti-rotation boss is an annular structure with a notch, and the bottom end of the semi-cylindrical tube on the locking block corresponds to the opening of the anti-rotation boss.

[0006] Furthermore, the waterproof cap is slidably fitted onto the outer surface of the grounding cable and has an internal thread on its inner wall. The two semi-cylindrical cylinders have corresponding external threads on their outer outer walls. The waterproof cap is threadedly connected to the top of the cylindrical body composed of the two semi-cylindrical cylinders.

[0007] Furthermore, one end of the locking sleeve is provided with a locking rod, and the locking rod has a slot. The locking mechanism includes a lock body located inside the locking block and a locking rod hole located on the locking block and engaging with the locking rod.

[0008] Furthermore, the rod body is provided with a threaded section that engages with the locking nut, and the other end of the rod body is formed with a hook.

[0009] This utility model has the following beneficial effects:

[0010] This utility model provides a self-locking grounding clamp for rails. While being easy to operate, the clamping block and locking sleeve work together to form a protective shell covering the connection between the grounding cable and the lug. The lug is secured inside the anti-rotation boss, ensuring that the lug does not wobble when the nut is tightened or loosened, thus preventing fatigue breakage of the cable and avoiding poor grounding. The locking sleeve completely covers the clamping nut, preventing it from being loosened in any way without unlocking, greatly improving the reliability of the grounding clamp. Attached Figure Description

[0011] Figure 1 This is the overall assembly drawing of this utility model;

[0012] Figure 2 This is a schematic diagram of the card block structure in this utility model;

[0013] Figure 3 This is a schematic diagram of the installation of the centerline nose of this utility model;

[0014] In the diagram: 1. Rod body; 2. Locking block; 3. Locking nut; 4. Locking sleeve; 5. Wire lug; 6. Anti-rotation boss; 7. Semi-cylindrical tube; 8. Waterproof cap; 9. Locking rod; 10. Lock body; 11. Locking rod hole. Detailed Implementation

[0015] like Figures 1 to 3As shown, a self-locking grounding clamp for rails includes a rod body 1, a locking block 2 that is sleeved on the rod body 1 and slides with the rod body 1, a locking nut 3 that is threaded with the rod body 1 and holds one end of the locking block 2, a locking mechanism provided on the locking block 2, and a locking sleeve 4 that cooperates with the locking mechanism. The locking sleeve 4 is sleeved on one end of the rod body 1 and slides with the rod body 1. The locking sleeve 4 is fastened to the outside of the locking nut 3 and cooperates with the locking block 2. The locking block 2 has an anti-rotation boss 6 on the side near the locking nut 3 for clamping the lug 5. It also includes a wire lug protective shell covering the outside of the connection between the grounding cable and the lug 5. The wire lug protective shell is composed of two semi-cylindrical cylinders 7 that can form a complete cylindrical structure and a waterproof cap 8. The two semi-cylindrical cylinders 7 are respectively provided on the side walls of the locking block 2 and the locking sleeve 4. The waterproof cap 8 is fitted on the top of the cylindrical body composed of the two semi-cylindrical cylinders 7. The split cylindrical body is easy to install and ensures good contact after the cable is connected.

[0016] The anti-rotation boss 6 is a ring structure with a notch. The bottom end of the semi-cylindrical cylinder 7 on the locking block 2 corresponds to the opening of the anti-rotation boss 6. It applies a limiting effect to the circumference of the wire lug, preventing the relative rotation between the wire lug and the nut when the nut is tightened on the wire lug, and at the same time protecting the connection between the grounding cable and the wire lug 5.

[0017] The waterproof cap 8 is slidably fitted on the outer surface of the grounding cable and has an internal thread on its inner wall. The two semi-cylindrical cylinders 7 have corresponding external threads on their outer walls. The waterproof cap 8 is threadedly connected to the top of the cylindrical body formed by the two semi-cylindrical cylinders 7. The waterproof cap 8 is provided with a wire hole, the inner diameter of which is adapted to the diameter of the grounding cable. The use of threaded connection facilitates installation and disassembly and can ensure the connection strength between the waterproof cap 8 and the wiring segment.

[0018] The locking sleeve 4 has a locking rod 9 at one end, and a slot is provided on the locking rod 9. The locking mechanism includes a lock body 10 located inside the locking block 2 and a locking rod hole 11 located on the locking block 2 and engaged with the locking rod 9. The locking rod 9 and the locking rod hole 11 cooperate to fasten the locking sleeve 4 to the outside of the locking nut 3.

[0019] The rod 1 has a threaded section that engages with the locking nut 3, and the other end of the rod 1 has a hook.

[0020] The specific operation process of this utility model is as follows:

[0021] When installing grounding wires on railway rails, first place pole 1 horizontally on the bottom surface of the rail, and hook one end of pole 1 onto the edge of the bottom surface of the rail. Then, insert the clamping block 2 from the other end of the pull rod, and clamp it onto the rail with the hook of pole 1 facing each other. Peel the insulation from the end of the grounding cable to be connected and pass it through the waterproof cap 8, so that the unstripped part of the grounding cable fits tightly with the end cap of the waterproof cap 8. Connect the stripped part to the wire lug, and then insert the grounding wire lug of the grounding end onto pole 1. Finally, tighten the locking nut 3. Insert the other end of the rod 1, tighten the locking nut 3 to press the wire lug and the clamp 2 together, place the wire lug and the grounding cable inside the semi-cylindrical tube 7 on the clamp 2, put the locking sleeve 4 on the pull rod and push it towards the clamp 2, so that the locking sleeve 4 and the clamp 2 are locked together. At this time, the locking sleeve 4 protects the locking nut 3. The two semi-cylindrical tubes 7 are placed on the outside of the wire lug and the grounding cable. At this time, move the waterproof cap 8 on the grounding cable downward and tighten it on the top of the cylindrical body formed by the two semi-cylindrical tubes 7.

Claims

1. A self-locking grounding clamp for rails, comprising a rod body (1), a locking block (2) sleeved on the rod body (1) and slidably engaged with the rod body (1), a locking nut (3) threadedly engaged with the rod body (1) and abutting one end of the locking block (2), a locking mechanism provided on the locking block (2), and a locking sleeve (4) cooperating with the locking mechanism, characterized in that, The locking sleeve (4) is fitted onto one end of the rod (1) and slides with the rod (1). The locking sleeve (4) is fastened to the outside of the locking nut (3) and cooperates with the locking block (2). The locking block (2) has an anti-rotation boss (6) for locking the lug (5) on the side near the locking nut (3). It also includes a wire ear protective shell covering the outside of the connection between the grounding cable and the lug (5). The wire ear protective shell is composed of two semi-cylindrical cylinders (7) that can form a complete cylindrical structure and a waterproof cap (8). The two semi-cylindrical cylinders (7) are respectively set on the side walls of the locking block (2) and the locking sleeve (4). The waterproof cap (8) is fitted onto the top of the cylindrical body composed of the two semi-cylindrical cylinders (7).

2. The grounding clamp according to claim 1, characterized in that, The anti-rotation boss (6) is a ring structure with a notch, and the bottom end of the semi-cylindrical cylinder (7) on the card block corresponds to the opening of the anti-rotation boss (6).

3. The grounding clamp according to claim 1, characterized in that, The waterproof cap (8) is slidably sleeved on the outer surface of the grounding cable and has an internal thread on its inner wall. The two semi-cylindrical tubes (7) have corresponding external threads on their outer walls. The waterproof cap (8) is threadedly connected to the top of the cylindrical body composed of the two semi-cylindrical tubes (7).

4. The grounding clamp according to claim 1, characterized in that, The locking sleeve (4) has a locking rod (9) at one end, and a slot is provided on the locking rod (9). The locking mechanism includes a lock body (10) located inside the locking block (2) and a locking rod hole (11) located on the locking block (2) and inserted into the locking rod (9).

5. The grounding clamp according to claim 1, characterized in that, The rod (1) is provided with a threaded section that engages with the locking nut (3), and the other end of the rod (1) is formed with a hook.

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