Grounding wire rod with live-line locking function

Abstract

The grounding wire bar comprises a grounding chuck, the bottom of the grounding chuck is provided with a through hole, a hollow operating rod is arranged in the through hole in a penetrating mode, a movable contact is arranged in a clamping opening of the grounding chuck, the movable contact is connected with a pull rod arranged in the operating rod in a penetrating mode, and the pull rod is connected with a grounding wire. The operating rod is further sleeved with a reset piece making contact with the movable contact, one end, away from the movable contact, of the operating rod is provided with a driving assembly for driving the pull rod, a locking structure is arranged in the driving assembly, and the locking structure can lock the driving assembly when approaching the electrified equipment. According to the utility model, when an electrified device is mistakenly entered, the driving assembly is automatically locked, the position of the movable contact is locked, and the movable contact is prevented from moving so as to keep the opening of the grounding chuck closed, that is, short circuit with the electrified device is avoided, and the safety in the maintenance operation process of electrical equipment is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of power equipment maintenance, and particularly relates to a grounding wire rod with live locking. Background Art

[0002] The short-circuit grounding wire is a safety tool for power equipment maintenance operations. By installing a short-circuit grounding wire through a grounding wire rod, if an operation error occurs, such as mistakenly installing a short-circuit grounding wire on a live-running power equipment, it will cause a serious metal grounding short circuit of high-voltage equipment, generating a huge short-circuit current and high-temperature electric arc, resulting in the instantaneous burning of on-site equipment, electric arc burns to operators, and even serious accidents such as death. Content of the Utility Model

[0003] The purpose of the utility model is to provide a grounding wire rod with live locking to overcome the defects of the prior art. When the grounding clamp approaches or contacts a live device, the locking structure can lock the driving component, preventing the movable contact from moving, keeping the grounding clamp in a closed state, avoiding short-circuiting with the live device, and improving the safety during the maintenance operation of power equipment.

[0004] The purpose of the utility model is achieved by the following technical solutions:

[0005] A grounding wire rod with live locking includes a grounding clamp. A through hole is provided at the bottom of the grounding clamp, and a hollow operating rod is inserted therein. A movable contact is arranged in the clamping opening of the grounding clamp. The movable contact is connected to a pull rod inserted in the operating rod. A reset member that contacts the movable contact is also sleeved on the operating rod. A driving component for driving the pull rod is arranged at one end of the operating rod away from the movable contact. A locking structure is provided inside the driving component, and the locking structure can lock the driving component when approaching a live device.

[0006] In one embodiment, the reset member is a reset spring. The reset spring is sleeved on the operating rod. One end thereof away from the movable contact is fixed on the operating rod, and the other end can pass through the through hole of the grounding clamp and press against the movable contact when the grounding wire rod is not in operation, so that the movable contact closes the clamping opening of the grounding clamp.

[0007] In one embodiment, a grounding rod is further arranged at the bottom of the grounding clamp, and a grounding lead connected to the grounding end clamp is arranged on the grounding rod.

[0008] In one embodiment, the driving assembly has a rotary handle connected to the pull rod, and an electromagnet and an armature are further arranged therein. A radial bayonet is formed on the operating rod, and when the electromagnet is powered on, the armature can be clamped into the bayonet to prevent the pull rod from moving away from the movable contact.

[0009] In one embodiment, an alarm device is further installed on the operating rod, and an electric inspection module, a warning light and a buzzer are arranged therein. The warning light and the buzzer are both electrically connected to the electric inspection module.

[0010] In one embodiment, the bayonet is located at the end of the pull rod when the grounding rod is not in operation, so that when the armature is clamped into the bayonet, the armature contacts the end of the pull rod.

[0011] In one embodiment, arc-shaped clamping grooves are arranged on one side of the movable contact and the grounding chuck close to each other.

[0012] In one embodiment, an insulating grip is further arranged at the bottom of the operating rod.

[0013] The beneficial effects of the present utility model are as follows:

[0014] The movable contact is pressed by the return spring, so that the opening of the grounding chuck in the non-working state is in a closed state. At the same time, the locking structure in the driving assembly is used, that is, when the electromagnet is powered on and excited, the armature is driven to penetrate into the bayonet of the operating rod to limit the pull rod in the operating rod, avoiding short-circuiting with live equipment. When contacting a normally power-off equipment, the pull rod can be driven by the rotary handle to drive the movable contact to compress the return spring, so that the opening of the grounding chuck is opened to clamp the normally power-off equipment for short-circuiting. At the same time, after the rotary handle is released, the return spring can press the movable contact so that it can be stably hung on the power-off equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Hereinafter, the present utility model will be described in more detail based on embodiments and with reference to the drawings.

[0016] Wherein:

[0017] Figure 1 shows a schematic structural diagram of an embodiment of the present utility model;

[0018] In the drawings, the same components are denoted by the same reference numerals. The drawings are not drawn to actual scale.

[0019] Reference numerals:

[0020] 1 - Ground clamp, 2 - Movable contact, 3 - Return spring, 4 - Operating rod, 5 - Pull rod, 6 - Electromagnet, 7 - Armature, 8 - Rotating handle, 9 - Bayonet, 10 - Insulating grip, 11 - Ground rod, 12 - Ground lead, 13 - Ground terminal clamp, 14 - Alarm device. Detailed implementation

[0021] The present utility model will be further described below in conjunction with the accompanying drawings.

[0022] The present utility model provides a grounding rod with live locking, as Figure 1 shown, including a ground clamp 1. A through hole is provided at the bottom of the ground clamp 1, and a hollow operating rod 4 is inserted therein. A movable contact 2 is arranged in the clamping opening of the ground clamp 1. The movable contact 2 is connected to a pull rod 5 inserted in the operating rod 4. A reset member in contact with the movable contact 2 is also sleeved on the operating rod 4. A driving assembly for driving the pull rod 5 is arranged at one end of the operating rod 4 away from the movable contact 2. A locking structure is provided in the driving assembly, and the locking structure can lock the driving assembly when approaching a live device;

[0023] Specifically, the driving assembly has a rotating handle 8 connected to the pull rod 5, and an electromagnet 6 and an armature 7 are also arranged therein. A radial bayonet 9 is provided on the operating rod 4. When the electromagnet 6 is energized, the armature 7 can be clamped into the bayonet 9 to prevent the pull rod 5 from moving away from the movable contact 2. The bayonet 9 is located at the end of the pull rod 5 when the grounding rod is not in operation. When the armature 7 is clamped into the bayonet 9, the armature 7 contacts the end of the pull rod 5. A ground rod 11 is also arranged at the bottom of the ground clamp 1, and a ground lead 12 connected to the ground terminal clamp 13 is arranged on the ground rod 11;

[0024] It should be noted that, as Figure 1 shown, the state when the opening of the ground clamp 1 is opened is shown, that is, the pull rod 5 in the operating rod 4 is moved downward by using the rotating handle 8 of the driving assembly, and then the movable contact 2 is driven to move downward, so that the opening of the ground clamp 1 is opened, and the ground clamp 1 is hung on the de-energized device for short-circuiting to ensure the safety of the operating personnel. When the device that should be de-energized is live for some reason, when the ground clamp 1 approaches it, the electromagnet 6 is energized and magnetized to clamp the armature 7 on it into the bayonet 9 of the operating rod 4, that is, a limiting member is radially inserted into the operating rod 4. At this time, the bottom of the pull rod 5 in the operating rod 4 contacts the limiting member, forming a locked state. The operator cannot pull the pull rod 5 through the driving assembly, and the movable contact 2 remains in contact with the ground clamp 1, closing its opening to avoid short-circuiting with the live device and improving the safety during the maintenance of power equipment;

[0025] In one embodiment, the reset member is a reset spring 3. The reset spring 3 is sleeved on the operating rod 4. One end thereof away from the movable contact 2 is fixed on the operating rod 4, and the other end can pass through the through hole of the grounding chuck 1 and press against the movable contact 2 when the grounding rod is not in operation, so that the movable contact 2 closes the clamping opening of the grounding chuck 1. That is, the reset spring 3 is used as the reset member. One end thereof is fixed on the operating rod 4, and the other end is in contact with the movable contact 2. The elastic force of the reset spring 3 is used to press the movable contact 2 to close the opening of the grounding chuck 1. When the pull rod 5 is pulled downward, the movable contact 2 squeezes the reset spring 3, so that the opening of the grounding chuck 1 is opened, enabling it to be short-circuited with the equipment under repair. At the same time, the elastic potential energy of the reset spring 3 is used to automatically move the movable contact 2 and the pull rod 5 connected thereto upward, improving the stability of the short circuit with the equipment under repair and ensuring the safety of the operation;

[0026] In one embodiment, as Figure 1 shown, an alarm device 14 is further installed on the operating rod 4. An electrification detection module, a warning light and a buzzer are arranged therein. Both the warning light and the buzzer are electrically connected to the electrification detection module. That is, when approaching a live equipment, the generated electric arc activates the electrification detection module, causing the warning light and the buzzer to operate, further reminding the operator;

[0027] In one embodiment, arc-shaped clamping grooves are arranged on both sides of the movable contact 2 and the grounding chuck 1 close to each other, improving the stability of the short circuit with the equipment under repair;

[0028] In one embodiment, an insulating grip 10 is further arranged at the bottom of the operating rod 4, and the surfaces of the driving assembly, the operating rod 4 and the grounding chuck 1 all have insulating layers made of insulating materials;

[0029] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "bottom", "top", "front", "rear", "inner", "outer", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0030] Although the present utility model has been described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the present utility model. Therefore, it should be understood that many modifications can be made to the exemplary embodiments, and other arrangements can be designed, as long as they do not depart from the spirit and scope of the present utility model as defined by the appended claims. It should be understood that different dependent claims and the features described herein can be combined in a manner different from that described in the original claims. It should also be understood that the features described in connection with a single embodiment can be used in other described embodiments.

Claims

1. A grounding rod with live locking, characterized in that: It includes a grounding clamp, a through hole is opened at the bottom of the grounding clamp, a hollow operating rod is passed through the hole, a movable contact is arranged in the clamping mouth of the grounding clamp, the movable contact is connected to a pull rod passed through the operating rod, a reset piece in contact with the movable contact is also sleeved on the operating rod, a driving component for driving the pull rod is arranged at one end of the operating rod away from the movable contact, a locking structure is provided in the driving component, and the locking structure can lock the driving component when it is close to the live equipment.

2. A grounding rod with live locking according to claim 1, characterized in that: The reset member is a reset spring, which is sleeved on the operating rod. One end of the reset spring away from the movable contact is fixed on the operating rod, and the other end can pass through the through hole of the grounding clamp and press the movable contact when the grounding rod is not in operation, so that the movable contact closes the clamping opening of the grounding clamp.

3. A grounding rod with live locking according to claim 1, characterized in that: A grounding rod is also arranged at the bottom of the grounding clamp, and a grounding lead connected to the grounding clamp is arranged on the grounding rod.

4. A grounding rod with live locking according to claim 1, characterized in that: The driving assembly has a rotating handle connected to the pull rod, which also has an electromagnet and an armature. The operating rod is provided with a radial slot, and the electromagnet can snap the armature into the slot when energized to prevent the pull rod from moving away from the movable contact.

5. The grounding rod with live locking according to claim 1, characterized in that: The operating rod is also equipped with an alarm device, which includes an electrical testing module, a warning light and a buzzer. The warning light and the buzzer are both electrically connected to the electrical testing module.

6. A grounding rod with live locking according to claim 4, characterized in that: The bayonet is located at the end of the pull rod when the grounding wire rod is not in operation, so that when the armature is inserted into the bayonet, the armature contacts the end of the pull rod.

7. The grounding rod with live locking according to claim 1, characterized in that: An arc-shaped clamping groove is arranged on one side where the movable contact and the grounding clamp are close to each other.

8. The grounding rod with live locking according to claim 1, characterized in that: An insulating handle is also provided at the bottom of the operating rod.

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