CN203339558U - Central switch cabinet bus electricity testing grounding car - Google Patents

Abstract

The utility model discloses a central switch cabinet bus electricity testing grounding car, and the electricity testing and grounding of a bus in a central switch cabinet can be realized. The central switch cabinet bus electricity testing grounding car comprises a chassis, three poles and contact arms. The contact arms are installed at the upper ends of the poles, and the front ends of the contact arms are equipped with bus contacts. Each of the poles is equipped with a grounding contact at another side corresponding to a contact arm. The chassis is also equipped with a base, valve opening guidance plates and an insulating baffle plate which is fixed at the outer side of the base. The two sides of the front end of the base are equipped with the valve opening guidance plates. The central switch cabinet bus electricity testing grounding car has the advantages of simple structure and safe and convenient operation, the direct electricity testing of the bus by using a general high voltage electroscope can be achieved, the reliable grounding is realized through grounding rods and the grounding contacts, the electricity testing and grounding of the bus in the central switch cabinet are realized, and the operation safety of a worker is ensured.

Description

Middle-mounted switchgear busbar electric test grounding vehicle

technical field

The utility model relates to a kind of electric inspection and grounding equipment for sealed switchgear, especially the electric inspection and grounding vehicle for the busbar of the central switchgear, which can realize the electric inspection and grounding of the busbar in the central switchgear.

Background technique

In the power system, the center-mounted switchgear has been widely used in the distribution network due to its small size, good interchangeability, and perfect and reliable anti-misoperation function. However, when the busbar in the switchgear needs power outage maintenance, according to the regulations of electric power safety, the busbar in the switchgear must be inspected first, and the grounding wire is allowed to be installed after it is confirmed that there is no electricity, and then the busbar is overhauled. However, the existing electric inspection method usually uses a high-voltage electroscope with a certain length to directly contact or approach the live equipment, and determine whether the equipment has voltage through sound and light alarms. This electric inspection method is only suitable for open switch cabinets. Therefore, if the conventional electric inspection method is adopted without the aid of equipment, and the valve in the central switch cabinet is pushed open with both hands to inspect the busbar, it is easy to cause major accidents due to the staff's electric inspection error because it cannot meet the safety distance requirements of the electric safety regulations. of personal injury accidents. There are also special grounding equipment developed and used at present, such as "a height-adjustable grounding vehicle with central switchgear" in the application number 200920075234.7. Although it can complete the grounding of the busbar, it cannot be tested for electricity. In addition, due to the structure of the static contact of the busbar, the current grounding clamp can only use the gap between the static contact and the contact box and plug it in the middle, and it is easy to loosen and fall off due to small extrusion force or vibration. The connection is unreliable, so a kind of electrical inspection and grounding equipment is needed that conforms to the electric safety regulations in the electrical inspection and grounding process, and can conduct electrical inspection and grounding of the busbar in the central switch cabinet.

Contents of the invention

The purpose of this utility model is to lift the busbar electric inspection and grounding vehicle of the central switchgear, solve the safety technical problems existing in the operation process of the sealed central switchgear during the busbar electric inspection and grounding operation, and can conveniently use the general high-voltage electroscope, directly Verify whether the busbar is live, and can use the grounding rod to ground conveniently and reliably to ensure the safety of operating personnel.

The utility model is realized in this way: the center-mounted switch cabinet busbar electric test grounding car includes a chassis car, three poles and a contact arm, the contact arm is installed on the upper end of the pole, and the front end is equipped with a bus contact, each pole Install the ground contact on the other side of the corresponding contact arm. A base, a valve opening guide plate and an insulating partition are also installed on the chassis vehicle, the insulating partition is fixed on the outer surface of the base, and the valve opening guide plate is equipped with on both sides of the front end of the base.

Compared with the prior art, the utility model has the advantages of simple structure, safe and convenient operation, direct electric inspection of the busbar with a general high-voltage electroscope, and reliable grounding through the grounding rod and the grounding contact, realizing the sealing The electrical inspection and grounding of the busbar in the built-in switchgear ensures the safety of the staff and has obvious economic and social benefits.

Description of drawings

Fig. 1 is the front view of the structure diagram of the utility model.

FIG. 2 is a top view of FIG. 1 .

Fig. 3 is a right side view of Fig. 1 .

Fig. 4 is a left side view of Fig. 1 .

Detailed ways

The utility model will be described in detail below in conjunction with the accompanying drawings. Referring to Fig. 1 to Fig. 4, the middle-mounted switchgear bus electric test grounding car includes a chassis car 1, three poles 4 and contact arms 5, and the contact arms 5 are installed on the pole 4. The upper end, the front end of which is equipped with a bus contact 6, and a base 3, a valve opening guide plate 2 and an insulating partition 12 are also installed on the chassis car 1, and the insulating partition 12 is fixed on the outer surface of the base 3, and each pole 4 The ground contact 9 is installed on the other side corresponding to the contact arm 5; the valve opening guide plate 2 is installed on both sides of the front end of the base 3. The ground contact 9 is installed in the ground contact box 10; the upper part of the pole 4 is equipped with a fixed plate 13, and the two sides of the fixed plate 13 are respectively fixed with the ground contact 9 and the contact arm 5 by bolts, and the ground contact box 10 is fixed on the On the pole 4 , the ground contact 9 realizes metal connection with the contact arm 5 and the bus contact 6 through the fixing plate 13 on the pole 4 . The base 3 is L-shaped and fixed on the chassis 1. The insulating partition 12 is fixed on the upper part of the outer side of the base 3 through the hinge 11. Its height is enough to cover the grounding contact 9, and the insulating partition 12 can only be turned outwards. It is convenient for the operator to prop up and put down. The bottom end of chassis car 1 is equipped with caster, and lock arm 8 is installed in its rear end, and lock arm 8 is installed on the both sides of car body, and car body is provided with locking groove, and lock arm control handle 14 is housed in it, lock arm Control handle 14 is connected with lock arm 8, pulls lock arm control handle 14, and lock arm 8 can be stretched out and retracted; When needing the chassis car 1 to advance, the cranking handle can be inserted to rotate the hand screw 7. Valve opening guide plate 2 is provided with lead-in groove, and this lead-in groove cooperates with the opening connecting rod of center-mounted switch cabinet contact valve, promotes the contact valve in the center-mounted switch cabinet, makes its contact valve open. The ground contact 9 is a spring-type flat contact; the bus contact 6 is a bundled plum-shaped contact.

During use, the operator pushes the utility model into the switch chamber of the central switch cabinet, and fixes the lock arm 8 with the lock hole of the central switch cabinet body through the lock arm control handle 14, and then connects the crank handle with the hand screw 7 is connected, and the chassis car 1 is moved forward by shaking the crank. When the fixed valve opening guide plate 2 of the base 3 front end contacts the contact valve and opens the connecting rod, along with the entry of the chassis car 1, the contact valve is started to be promoted to open the connecting rod, so that the connecting rod drives the contact valve to open. At the same time, the three contact arms 5 and the busbar contacts 6 fixed on the pole 4 are docked with the three busbar static contacts in the central switch cabinet, and the chassis car 1 is in place. Then the operator puts down the insulating partition 12, and gradually approaches the grounding contact 9 with a high-voltage electroscope. If the electroscope is silent and light alarms, it means that the three bus static contacts in the central switch cabinet have no electricity. Then the operator can insert the grounding rod into the spring-type flat contact of the grounding contact 9 to realize the grounding work of the central switch cabinet busbar. The whole process of electric inspection and grounding is simple and convenient, and every step in the operation complies with electric safety regulations, which effectively and reliably ensures the personal safety of operators.

The parts of the utility model that are not described in detail are the known techniques of those skilled in the art.

Claims (5)

1. The center-mounted switchgear busbar electric test grounding vehicle, including the chassis vehicle (1), three poles (4) and the contact arm (5), the contact arm (5) is installed on the upper end of the pole (4), and its front end Equipped with busbar contacts (6), the feature is that base (3), valve opening guide plate (2) and insulating partition (12) are also installed on the chassis (1), and the insulating partition (12) is fixed On the outer surface of the base (3), each pole (4) corresponds to the contact arm (5) and the grounding contact (9) is installed on the other side; the two sides of the front end of the base (3) are equipped with valve opening guide plates ( 2). 2. The center-mounted switchgear busbar electric inspection and grounding vehicle according to claim 1, wherein the grounding contact (9) is installed in the grounding contact box (10); the upper part of the pole (4) is installed There is a fixing plate (13), and the two sides of the fixing plate (13) fix the grounding contact (9) and the contact arm (5) respectively by bolts, the grounding contact box (10) is fixed on the pole (4), and the grounding contact The head (9) realizes metal connection with the contact arm (5) and the bus contact (6) through the fixing plate (13) on the pole (4). 3. The center-mounted switchgear busbar electric inspection and grounding vehicle according to claim 1 or 2, characterized in that the base (3) is L-shaped and fixed on the chassis vehicle (1), and the insulating partition (12) The upper part fixed on the outer side of the base (3) by the hinge (11) is high enough to cover the ground contact (9), and the insulating partition (12) can only be turned outward. 4. The center-mounted switchgear busbar electric inspection and grounding vehicle according to claim 3, characterized in that, the bottom end of the chassis vehicle (1) is equipped with casters, and the rear end is equipped with a lock arm (8), and the lock arm (8) Installed on both sides of the car body, there is a locking groove on the car body, and the lock arm control handle (14) is installed in it, and the lock arm control handle (14) is connected with the lock arm (8); the chassis car (1 ) is provided with a hand screw (7) in the middle of the car body. 5. The center-mounted switchgear busbar electric inspection and grounding vehicle according to claim 3, characterized in that the grounding contact (9) is a tension spring type flat contact .

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