Grounding safety locking device for power supply line maintenance

Abstract

The utility model relates to a grounding safety locking device for power supply line maintenance, which relates to the technical field of railway safety maintenance and comprises a rod body, a clamping block sleeved on the rod body and in sliding fit with the rod body, and a locking nut in threaded fit with the rod body and propped against one end of the clamping block. The locking structure is arranged on the clamping block, the locking sleeve is matched with the locking structure, one end of the rod body is sleeved with the locking sleeve, the locking sleeve is in sliding fit with the rod body, and the locking sleeve is buckled on the outer side of the locking nut after being matched with the locking structure; according to the utility model, only the effective thread part used when the nut presses the wire nose is reserved, the thread part at the front end of the pull rod is changed into a smooth column with a smaller diameter, and meanwhile, the rod body is provided with the locking mechanism, so that the safety mode is optimized, and the installation is more convenient and faster.

Description

Technical Field

[0001] The utility model relates to the technical field of railway safety maintenance, in particular to a grounding safety locking device for power supply line maintenance. Background Art

[0002] When performing electrification maintenance on railways, it is necessary to connect a grounding wire between the equipment end and the rail end through a grounding set to ensure safety during the operation. In the existing grounding set, the structure for connecting the rail end uses a hook bolt. The hook bolt mainly includes a rod body, a nut, and a clamping plate. One end of the rod body forms a hook, and the other end of the rod body forms an external thread. The nut is rotatably installed on the rod body through the cooperation connection with the external thread. A collar is connected to the clamping plate, and the clamping plate can be slidably inserted into and sleeved on the rod body from the other end of the rod body by using the collar. During the operation, the hook of the hook bolt is hooked on one side of the bottom of the rail, and after the clamping plate adjusts its position and is stuck on the other side of the rail, the nut is used to lock the clamping plate to lock the hook bolt on the rail; in addition, to prevent the clamping device from being misoperated and causing the nut to loosen, resulting in failure or unreliable grounding, usually an additional safety measure is added: a hole is drilled in the pull rod of the clamping device, and a padlock is hung to prevent someone from misoperating and loosening the nut.

[0003] The disassembly and assembly operation of this kind of equipment is time-consuming and laborious, with low efficiency, occupying limited emergency repair construction time; in addition, since there is always some gap between the padlock and the nut and the nut is not fully protected, there is still a possibility of loosening. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a grounding safety locking device for power supply line maintenance, aiming to solve the problems of inconvenient operation, time waste, and poor safety measures existing in the prior art.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A grounding safety locking device for power supply line maintenance includes a rod body, a block that is sleeved on the rod body and slidably cooperates with the rod body, and a locking nut that is threadedly engaged with the rod body and abuts against one end of the block; it further includes a locking structure provided on the block and a locking sleeve that cooperates with the locking structure. The locking sleeve is sleeved on one end of the rod body and slidably cooperates with the rod body, and after the locking sleeve cooperates with the locking structure, it is buckled outside the locking nut.

[0006] Further, a ball is provided on the side wall of the locking sleeve, and the locking structure includes a lock core provided inside the block and a ball groove provided on the block and cooperating with the ball.

[0007] Further, one end of the rod body is provided with a hook, the other end of the rod body is provided with an external thread, a smooth column extends outward from the axis of the external thread, and the diameter of the smooth column is smaller than that of the rod body and is provided with a spherical chamfer.

[0008] Furthermore, the clamping block is provided with a clamping slot for clamping the line nose.

[0009] Furthermore, the locking nut includes a nut body and a washer, and the nut is connected to one end of the washer by riveting.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0011] Only the effective threaded part used by the nut to compress the wire nose is retained on the pull rod, and the threaded part at the front end of the pull rod is turned into a smooth rod, and the diameter is reduced, so that the nut can be directly inserted in and out. In addition, the chamfer of the straight end of the pull rod is increased, and the end is trimmed into a spherical shape, which is convenient for the insertion of the block and the nut, greatly reducing the installation time. The new locking method provided by this device can completely cover the compression nut. Without releasing the lock, the nut cannot be loosened in any way, which can highly ensure safety and reliability, and can be operated with one hand. Put the locking sleeve on the pull rod of the clamping device and push it forward to lock it with the clamping device block, which is convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the existing grounding device and insurance measures;

[0013] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 3 It is a structural schematic diagram of the rod member of the utility model;

[0015] Figure 4 It is a structural schematic diagram of the card block of the utility model;

[0016] Figure 5 It is a structural schematic diagram of the locking sleeve of the utility model;

[0017] Figure 6 It is a structural schematic diagram of the locking nut of the utility model;

[0018] In the figure: 1, rod body, 2, block, 3, locking nut, 4, locking sleeve, 5, pin, 6, lock core, 7, spring groove, 8, hook, 9, smooth column, 10, slot, 11, nut, 12, washer. DETAILED DESCRIPTION

[0019] like Figures 1 to 6As shown in the figure, a grounding safety locking device for power supply line maintenance includes a rod body 1, a clamping block 2 sleeved on the rod body 1 and slidably matched with the rod body 1, and a locking nut 3 threadedly matched with the rod body 1 and abutting against one end of the clamping block 2. It also includes a locking structure provided on the clamping block 2 and a locking sleeve 4 matched with the locking structure. The locking sleeve 4 is sleeved on one end of the rod body 1 and slidably matched with the rod body 1. After the locking sleeve 4 is matched with the locking structure, it is buckled outside the locking nut 3.

[0020] There are marbles 5 provided on the side wall of the locking sleeve 4, a lock core 6 is provided inside the clamping block 2, and a marble groove 7 corresponding to the marbles 5 is provided on the clamping block 2. The cooperation between the marbles 5 and the marble groove 7 makes the locking sleeve 4 buckle outside the locking nut 3.

[0021] One end of the rod body 1 is provided with a hook 8, and the other end of the rod body 1 is provided with an external thread. For the convenience of the penetration of the clamping block 2 and the nut, a smooth column 9 extends outward from the axis of the external thread of the rod body 1. The diameter of the smooth column 9 is smaller than that of the rod body 1 and is provided with a spherical chamfer, which greatly saves the time for the installation of the clamping block 2 and the locking nut; a clamping groove 10 for clamping the wire nose is provided on the clamping block 2, which circumferentially limits the wire nose and prevents the relative rotation between the wire nose and the nut when the nut presses the wire nose; through the cooperation of the nut 11 and the washer 12, the locking nut is lengthened. By increasing the contact area between the nut and the screw rod, the friction force between the two is increased, preventing the nut from loosening and saving the installation time.

[0022] Specific working principle and steps:

[0023] When installing the grounding wire on the railway rail, first place the rod body of the pull rod horizontally on the bottom surface of the rail, and use the hook at one end of the pull rod to hook one edge of the bottom surface of the rail. Then insert the clamping block into the other end of the pull rod and clamp it on the rail opposite to the pull rod hook. Then insert the wire nose at the grounding end of the grounding wire into the pull rod, and then insert the nut into the other end of the pull rod and tighten the nut to press the wire nose. Put the locking sleeve on the pull rod and push it towards the clamping block to lock the locking sleeve and the clamping block together. The locking sleeve protects the locking nut, and the nut cannot be loosened due to misoperation or collision, absolutely ensuring the grounding reliability of the grounding wire.

[0024] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A grounding safety locking device for power line maintenance, comprising a rod body (1), a clamping block (2) sleeved on the rod body (1) and slidably matched with the rod body (1), and a locking nut (3) threadedly matched with the rod body (1) and supported on one end of the clamping block (2); characterized in that: It also includes a locking structure provided on the clamping block (2) and a locking sleeve (4) cooperating with the locking structure, wherein the locking sleeve (4) is sleeved on one end of the rod body (1) and slidably cooperates with the rod body (1), and the locking sleeve (4) is buckled on the outside of the locking nut (3) after cooperating with the locking structure.

2. A grounding safety locking device for power supply line maintenance according to claim 1, characterized in that: The side wall of the locking sleeve is provided with a pin (5), and the locking structure comprises a lock core (6) arranged inside the clamping block (2) and a spring groove (7) arranged on the clamping block (2) and cooperating with the pin (5).

3. A grounding safety locking device for power supply line maintenance according to claim 1, characterized in that: A hook (8) is provided at one end of the rod body (1), and an external thread is provided at the other end of the rod body (1). A smooth column (9) extends outward from the axis of the external thread. The smooth column (9) has a smaller diameter than the rod body (1) and is provided with a spherical chamfer.

4. A grounding safety locking device for power supply line maintenance according to claim 1, characterized in that: The clamping block (2) is provided with a clamping slot (10) for clamping a wire nose.

5. A grounding safety locking device for power supply line maintenance according to claim 1, characterized in that: The locking nut (3) comprises a nut (11) body and a washer (12); one end of the nut (11) and the washer (12) are sleeve-riveted and connected.

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