CN204741212U - A lead screw propulsion lower car device for high-voltage switchgear - Google Patents

Abstract

The utility model discloses a lead screw propulsion lower floor car device for high tension switchgear, including lower floor's car frame and install the disjunctor insulator on the frame, be connected with on the disjunctor insulator and touch the arm, touch and be fixed with the contact on the arm, arrester or voltage transformer install on the frame bottom plate, and arrester or voltage transformer are connected through connecting the copper bar and touching the arm, the frame below is provided with the chassis car that adopts lead screw advancing mechanism. The utility model discloses utilize lead screw drive, can relax, remove operating position with lower floor's car from test position uniformly. And for lower floor's car provides work, test position locking and position indicator, convenience of customers inspection operation makes the operation safer. The utility model has the advantages of simple structure, operation safety, flexibility, convenience of customers change components and parts (like fuse, arrester etc. ), exempt from the after -sale service.

Description

A lead screw propulsion lower car device for high-voltage switchgear

【Technical field】

The utility model belongs to the technical field of high-voltage electrical equipment, and relates to a lead screw propelling lower-floor car device for a high-voltage switch cabinet.

【Background technique】

At present, the lower-level vehicles of domestic high-voltage switchgear mostly adopt the method of manual propulsion; and it is equipped with the JYN1-12 contact box integrated with the static contact and the contact box, the conductor is exposed, and there is no position indication. body, very dangerous. In addition, the valve plate of the JYN1-12 contact box is controlled by springs, and the opening and closing is very inflexible. Due to the uneven force during the process of pushing the handcart by manpower, the valve plate of the JYN1-12 contact box is easy to be damaged or the valve plate is stuck. , leading to problems such as the lower car cannot be pushed in or pulled out.

【Content of utility model】

The purpose of the utility model is to provide a lead screw propelling lower car device for a high-voltage switchgear.

In order to achieve the above object, the utility model adopts the following technical solutions to achieve:

A lead screw propelling lower car device for a high-voltage switchgear, including a lower car frame and a conjoined insulator installed on the frame, a contact arm is connected to the conjoined insulator, and a contact is fixed on the contact arm; a lightning arrester or a voltage mutual inductance The arrester is installed on the bottom plate of the frame, and the lightning arrester or voltage transformer is connected to the contact arm through the connecting copper bar; the chassis car with the screw propulsion mechanism is arranged under the frame.

The further improvement of the utility model is:

A push plate for opening the valve is arranged under the contact.

The push plate is installed on the frame. When the handcart is pushed forward, the push plate pushes the lower valve mechanism of the switch cabinet to open the valve plate on the cabinet body. When the lower vehicle reaches the working position, the conductive circuit is connected.

The contacts are plum-shaped contacts, and are fastened by binding springs.

The frame is made of steel plates and then welded and painted before being assembled.

Connected insulators are bolted together with a frame to support contact arms and other conductors.

The contact arm and the connected insulator are fixed by inserts on the connected insulator.

The chassis car adopts a circuit breaker universal chassis car, which is bolted to the frame of the lower car through threads to drive the lower car to move.

A discharge counter used in conjunction with the arrester is also connected to the arrester.

Compared with the prior art, the utility model has the following beneficial effects:

The utility model utilizes the frame characteristics of the existing lower car to change the chassis car from manpower propulsion to lead screw propulsion. It makes the movement of the lower car more stable, and provides the user with the work, test position contacts and position locking of the lower car, avoiding the lower door of the switch cabinet being damaged by the lower car when entering and leaving the switch cabinet, and greatly reducing the workload of after-sales service. In addition to the replacement of vulnerable components such as fuses, the switchgear of the upper car is almost maintenance-free. The feature of the utility model patent is also that the structure is simple, and only by changing few parts, the requirements can be met. The cost is slightly increased compared with the original model of the lower car, and the after-sales service of the switchgear with the lower car is greatly reduced, the operation is safer and more reliable, the production cost is greatly saved, and the product reliability is improved. After the switchgear adopting the patent form is put into operation, user complaints and after-sales workload are almost zero.

【Description of drawings】

Figure 1 is a schematic diagram of the overall structure of the utility model.

In the figure, 1 is the frame; 2 is the one-piece insulator; 3 is the contact arm; 4 is the plum blossom contact; 5 is the connecting copper bar; 6 is the arrester; 7 is the push plate; 8 is the chassis; 9 is the discharge counter.

【Detailed ways】

Below in conjunction with accompanying drawing and embodiment the utility model is described in detail.

Referring to Fig. 1, the utility model includes a lower car frame 1, a conjoined insulator 2 installed on the frame 1, a contact arm 3 connected with the conjoined insulator as a conductor, a plum blossom contact 4 fixed on the contact arm, and a connecting copper bar 5. Lightning arrester 6, push plate 7 for opening the valve, chassis vehicle 8 with lead screw propulsion mechanism, etc. Wherein, the frame and the connected insulator, and the connected insulator and the contact arm are connected through threaded inserts at both ends of the connected insulator. The plum blossom contact is installed on the contact arm and is clamped by the binding spring. The arrester is installed on the bottom plate of the frame, and the discharge counter can also be installed on the frame according to the need (at this time, only an insulating plate needs to be installed on the frame, and the arrester is installed on the insulating plate). The lightning arrester and the contact arm are connected by connecting copper bars 5 . Thus forming a conductive loop.

As shown in Figure 1, when the lower car is to move from the test position of the switch cabinet to the working position, just insert the handle into the handle hole of the chassis car, turn the handle slightly to drive the screw to rotate, and then fix it on the lower The push plates on both sides of the car frame push the rollers of the upper and lower valve mechanism of the switch cabinet to quickly open the lower car valve. When the lower car reaches the working position, the lower car is locked at the working position, the working position indicator light on the instrument door of the switch cabinet is on, and the secondary plug of the lower car is locked on the switch cabinet, which cannot be plugged and unplugged while the power is on. The operation is very safe and reliable.

Adopting the lead screw described in the utility model to push the lower car can meet the protection requirement of the switch cabinet. It can prevent operators and charged bodies from entering the switch cabinet, and meet the protection level requirements of IP2X for the compartment of the switch cabinet and IP4X for the shell.

Although the embodiments of the present invention have been described above in conjunction with the accompanying drawings, the present invention is not limited to the above specific embodiments, which are only illustrative and instructive, rather than restrictive. Under the enlightenment of this specification, those skilled in the art can also make many forms without departing from the protection scope of the claims of the present invention, and these all belong to the list of the protection of the present invention.

Claims (9)

1. A lead screw for high-voltage switchgear to push the lower car device, characterized in that: it includes the lower car frame (1) and a conjoined insulator (2) installed on the frame, and the conjoined insulator (2) is connected with The contact arm (3), the contact (4) is fixed on the contact arm (3); the lightning arrester (6) or the voltage transformer is installed on the frame bottom plate, and the lightning arrester (6) or the voltage transformer is connected to the copper bar (5) and The contact arm (3) is connected; a chassis vehicle (8) adopting a lead screw propulsion mechanism is arranged under the frame (1). 2. The lead screw propelling lower vehicle device for high-voltage switchgear according to claim 1, characterized in that: a push plate (7) for opening the valve is provided under the contact (4). 3. The lead screw propelling lower car device for high-voltage switchgear according to claim 2, characterized in that: the push plate (7) is installed on the frame (1), when the handcart is pushed, the push plate (7) ) Push the lower valve mechanism of the switch cabinet, open the valve plate on the cabinet body, the lower vehicle reaches the working position, and the conductive circuit is connected. 4. According to claim 1, 2 or 3, the lead screw propelling lower vehicle device for high-voltage switchgear, characterized in that: the contact (4) is a plum blossom contact, and is clamped by a binding spring. 5. The lead screw propelling lower vehicle device for high-voltage switchgear according to claim 1, characterized in that: said frame (1) is to be assembled after being bent by steel plate, welded and sprayed. 6. The lead screw propelling lower car device for high-voltage switchgear according to claim 1, characterized in that: the connected insulator (2) is bolted together with the frame (1) by bolts to support the contactor arm (3) and other electrical conductors. 7. The lead screw propelling lower car device for high-voltage switchgear according to claim 1, characterized in that: the contact arm (3) and the conjoined insulator (2) utilize the embedding on the conjoined insulator (2) The piece is fixed. 8. The lead screw propelling lower car device for high-voltage switchgear according to claim 1, characterized in that: the chassis car (8) adopts a circuit breaker universal chassis car, and the frame (1) of the lower car is threaded Bolted to drive the movement of the lower car. 9. The lead screw propelling lower vehicle device for high-voltage switchgear according to claim 1, characterized in that: the lightning arrester (6) is also connected with a discharge counter (9) used in conjunction with the lightning arrester (6).