CN201142306Y - Slider assembly in the cam drive mechanism of dual power automatic transfer switch - Google Patents

Abstract

A slider assembly in a cam transmission mechanism of a dual-power automatic transfer switch, comprising a slider body, a roller arranged at one end of the slider body for cooperating with the cam, and a roller arranged at the other end of the slider body for connecting with a circuit breaker The shift fork matched with the handle and the pulley arranged at the bottom of the slider body. The slider body is positioned on a pair of slider bars through the pulley and can move linearly along the pair of slider bars. The pair of slider bars are fixed on the slider body. On the board, the feature is that a guide groove is opened on the slider body, the rollers are movably arranged in the guide groove through the slide shaft, and a return spring for automatically returning the slide shaft is arranged on the slide shaft. Advantages: It can effectively avoid the jamming phenomenon between the slider body and the cam, which is conducive to improving the operational reliability of the circuit breaker, stably realizing the switching between dual power supplies, and prolonging the service life of the circuit breaker.

Description

Slider assembly in the cam drive mechanism of dual power automatic transfer switch

technical field

The utility model relates to a dual-power automatic switching switch, in particular to a slider assembly in a cam transmission mechanism of a dual-power automatic switching switch.

Background technique

As we all know, the dual-power automatic transfer switch is composed of two circuit breakers with accessories, a set of cam transmission mechanism driven by a single motor, and a controller. Switching requires that when one circuit breaker is in the closed state, the other circuit breaker is not allowed to close, and it is mainly used in important places where power failure is not allowed. The slider assembly in the cam transmission mechanism of the existing dual power supply automatic switch, as shown in Figure 1, it includes a slider body 5, a cam 8 arranged at one end of the slider body 5 for cooperating with the cam 8 in the cam transmission mechanism Roller 1, the fork 6 arranged at the other end of the slider body 5 for matching with the handle of the circuit breaker, the pulley 4 arranged at the bottom of the slider body 5, the slider body 5 is positioned on a pair of sliders through the pulley 4 The rod 3 can move linearly along a pair of slide bars 3, and a pair of slide bars 3 are installed on the slider fixing plate 7 by a pair of slide bar seats 2 at two ends. There are two sets of the above-mentioned slider assemblies in the cam transmission mechanism of the dual-power automatic transfer switch, which are respectively located on the left and right sides of the cam 8 and are arranged symmetrically. Only one set of slider assemblies on the right side is shown in Figure 1 , leaving out the set of slider components on the left. This kind of slider assembly can realize the mechanical interlocking of two circuit breakers through the cooperation of the roller 1 and the cam 8 in the cam transmission mechanism, but there is a problem in the actual operation process: when the cam 8 drives the slider body 5 to make After the handle of the circuit breaker passes the re-buckle point, due to a certain amount of rebound of the handle of the circuit breaker, there will be a jamming phenomenon between the cam 8 and the slider body 5, which will cause the spring in the circuit breaker to be easily damaged, and even occur. Breakage of the circuit breaker handle will affect the service life of the circuit breaker.

Contents of the invention

The purpose of the utility model is to provide a slider assembly in a cam transmission mechanism of a double power supply automatic switching switch which can effectively avoid jamming between the cam and the slider body.

The purpose of this utility model is achieved in this way, a slider assembly in a cam transmission mechanism of a dual power supply automatic switch, which includes a slider body 5, a cam 8 arranged at one end of the slider body 5 Roller 1, the fork 6 arranged at the other end of the slider body 5 for matching with the handle of the circuit breaker, the pulley 4 arranged at the bottom of the slider body 5, the slider body 5 is positioned on a pair of sliders through the pulley 4 The rod 3 can move linearly along a pair of slide rods 3, and a pair of slide rods 3 are installed on the slider fixing plate 7. Its characteristics are: a guide groove 10 is opened on the slider body 5, and the roller The sliding shaft 9 is movably arranged in the guide groove 10 , and a return spring 11 for automatically returning the sliding shaft 9 is arranged on the sliding shaft 9 .

Return spring 11 described in the utility model is a kind of in extension spring or torsion spring or compression spring.

After adopting the above structure, the utility model has beneficial effects: when the roller 1 on the slider body 5 collides with the cam 8 in the cam transmission mechanism, the movement of the sliding shaft 9 in the guide groove 10 can effectively avoid The stuck phenomenon between the slider body 5 and the cam 8 is conducive to improving the reliability of the operation of the circuit breaker, stably realizing switching between dual power sources, and prolonging the service life of the circuit breaker.

Description of drawings

Fig. 1 is a schematic diagram of the prior art structure.

Fig. 2 is a schematic structural diagram of an embodiment of the present invention.

In the figure: 1. Roller, 2. Slider seat, 3. Slider, 4. Pulley, 5. Slider body, 6. Fork, 7. Slider holder, 8. Cam, 9. Slider shaft, 10 .Guide groove, 11. Return spring, 12. Pressure reed, 13. Locating pin.

Detailed ways

Through the following description of the embodiments, it will be more helpful to understand the technical solution of the utility model, but the embodiments should not and cannot be used to limit the utility model, and any modification or change in form should belong to the disclosure of the utility model category of technical solutions.

Please refer to Fig. 2, the slider assembly in the cam transmission mechanism of the dual power supply automatic transfer switch of the present invention includes a slider body 5, a roller 1 arranged at one end of the slider body 5 for cooperating with the cam 8 in the cam transmission mechanism , the fork 6 arranged at the other end of the slider body 5 for matching with the handle of the circuit breaker, the pulley 4 arranged at the bottom of the slider body 5, the pulley 4 has two groups, and is arranged on the slider body 5 in parallel On both sides in the middle of the bottom, the slider body 5 is movably arranged on a pair of slide bars 3 through two sets of pulleys 4 and can move back and forth along a pair of slide bars 3 in a straight line, and the two ends of a pair of slide bars 3 are fixed In the pair of slide bar seats 2, the pair of slide bar seats 2 are installed on the slider fixing plate 7 by fasteners. The guide groove 10 is provided at the end of the slider body 5 close to the side of the cam 8, and the shape of the groove can be a long rectangular hole, an oval hole, a regular S-shaped hole or an irregular Curved shape, etc., the specific shape is not subject to any restrictions. The roller 1 is sheathed on the sliding shaft 9, and the sliding shaft 9 is placed in the guide groove 10 and can move back and forth along the guide groove. On the slide shaft 9, a return spring 11 is provided, and the return spring 11 can be an extension spring, a torsion spring, or a compression spring etc., and its effect is to make the slide shaft 9 return automatically. The return spring 11 disclosed in FIG. 2 is a compression spring. One end of the compression spring presses against the slide shaft 9 , and the other end is fixed on the slider body 5 with a positioning pin 13 after bypassing the compression spring 12 .

What needs to be explained here is that there are two sets of the above-mentioned slider assembly in the cam transmission mechanism of the dual-power automatic transfer switch, which are respectively located on the left and right sides of the cam 8 and are arranged symmetrically. One set of slider assemblies on the side and one set of slider assemblies on the left are omitted.

Since the utility model puts the roller 1 in the guide groove 10, when the cam 8 drives the slider body 5 to move from the "closing" position to the "opening" position, and then from the "opening" position to "re-buckle" position, due to the internal structure of the circuit breaker, there is a certain amount of rebound in the circuit breaker handle that cooperates with the fork 6, thereby driving the slider body 5 to move in the opposite direction, forcing the roller 1 on the slider body 5 to move in the opposite direction. The convex surface of the cam 8 collides. At this time, the roller 1 is subjected to a thrust, which overcomes the resistance of the return spring 11 and pushes the roller 1 back along the direction of the guide groove 10 until the roller 1 breaks away from the cooperation with the convex surface of the cam 8, thereby The jamming phenomenon between the slider body 5 and the cam 8 can be effectively avoided, and the force on the handle of the circuit breaker is more reasonable, which is very beneficial to improving the operation reliability of the circuit breaker and prolonging the service life of the circuit breaker.

Claims (2)

1. A slider assembly in a cam transmission mechanism of a dual power supply automatic switch, which includes a slider body (5), a roller (1) arranged at one end of the slider body (5) for cooperating with the cam (8) ), the fork (6) arranged at the other end of the slider body (5) for matching with the breaker handle, the pulley (4) arranged at the bottom of the slider body (5), the slider body (5) ) is positioned on a pair of slide bars (3) through a pulley (4) and can move linearly along a pair of slide bars (3), and a pair of slide bars (3) are installed on a slider fixing plate (7). The guide groove (10) is opened on the slider body (5), the roller (1) is movably arranged in the guide groove (10) through the slide shaft (9), and is set on the slide shaft (9). There is a return spring (11) for making the slide shaft (9) return automatically. 2. The slider assembly in the cam transmission mechanism of the dual-power automatic transfer switch according to claim 1, wherein the return spring (11) is one of a tension spring, a torsion spring or a compression spring.

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