Grounding switch mechanism for centrally installed switchgear

Abstract

The utility model relates to a grounding switch mechanism for a centrally installed switchgear. The grounding switch mechanism comprises a first transmission shaft, a connecting seat, a first connecting rod, a first vertical rod, a second connecting rod, a support, a rotating shaft and a grounding switch. The first transmission shaft is horizontally and rotatably arranged at the bottom of the cable chamber, and one end of the first transmission shaft is connected with the driving motor; the connecting seat is fixedly sleeved on the first transmission shaft; one end of the first connecting rod is fixed on the connecting seat; first connecting parts are arranged at the two ends of the first vertical rod, the lower end of the first vertical rod is hinged to the first connecting rod through the first connecting parts, the upper end of the first vertical rod is hinged to the second connecting rod through the first connecting parts, and the first vertical rod is kept vertical all the time; one end of the second connecting rod fixedly sleeves the rotating shaft; the rotating shaft is horizontally and rotatably arranged on the bracket; the grounding knife is fixedly sleeved on the rotating shaft; the circuit breaker is connected with an adapter, and a grounding head of the adapter directly faces the grounding knife. The grounding switch mechanism is arranged in the cable chamber, so that personal safety is protected.

Description

TECHNICAL FIELD

[0001] The utility model relates to electrical cabinet processing technical field, especially a grounding switch mechanism for middle -mounted cabinet. BACKGROUND

[0002] The middle -mounted cabinet is full name armoured type removes middle -mounted metal -enclosed switch equipment, and it is a kind of high voltage distribution equipment for power system.Its structure is divided into three layers: the upper layer is busbar and instrument room (is isolated to each other), the middle layer is circuit breaker room, and the lower layer is cable room.Because circuit breaker is located in the middle layer, therefore, it is named armoured type removes middle -mounted metal -enclosed switch equipment, and is called middle -mounted cabinet in short.

[0003] In the middle -mounted cabinet, operating personnel misoperation closes drawer switch and leads to motor operation, and discharge and prevent misoperation to the line in the maintenance line when power failure maintenance, and the above-mentioned safety hazard is relatively big.

[0004] Therefore, it is needed to research a grounding switch mechanism for middle -mounted cabinet, and the quality is relatively lighter. UTILITY MODEL CONTENTS

[0005] The utility model discloses a grounding switch mechanism for middle -mounted cabinet, which is arranged in the cable room to protect personal safety.

[0006] To achieve the above-mentioned utility model purposes, a grounding switch mechanism for middle -mounted cabinet is provided, which comprises a first transmission shaft, a connecting seat, a first connecting rod, a first vertical rod, a second connecting rod, a support, a rotating shaft and a grounding knife.

[0007] The first transmission shaft is horizontally rotatably arranged at the bottom of the cable room, and one end of the first transmission shaft is connected with a driving motor for driving the first transmission shaft to rotate.

[0008] The connecting seat is fixedly sleeved on the first transmission shaft.

[0009] One end of the first connecting rod is fixed on the connecting seat.

[0010] Both ends of the first vertical rod are provided with first connecting parts, the lower end of the first vertical rod is hingedly connected with the first connecting rod through the first connecting part, and the upper end of the first vertical rod is hingedly connected with the second connecting rod through the first connecting part, and the first vertical rod always remains vertical.

[0011] One end of the second connecting rod is fixedly sleeved on the rotating shaft.

[0012] The support is vertically fixed in the cable room, and the rotating shaft is horizontally rotatably arranged on the support.

[0013] The grounding knife is fixedly sleeved on the rotating shaft.

[0014] The adapter is connected to the circuit breaker, and a grounding head of the adapter is opposite to the grounding knife.

[0015] Preferably, the bracket is further provided with at least two reset modules, and the two reset modules are symmetrically arranged on the bracket.

[0016] The mounting seat is hinged to the bracket, one end of the spring is connected to the mounting seat, and the other end of the spring is connected to the connecting plate.

[0017] Preferably, the grounding switch mechanism further comprises a manual mechanism, and the manual mechanism comprises a second transmission shaft, a third connecting rod, a second vertical rod and a fourth connecting rod.

[0018] The second transmission shaft is horizontally arranged in the cable chamber and located above the first transmission shaft, and the second transmission shaft is parallel to the first transmission shaft.

[0019] The outer end of the second transmission shaft extends out of the outer wall of the cable chamber, and the outer end of the second transmission shaft is provided with a plug-in hole.

[0020] One end of the third connecting rod is fixedly sleeved on the second transmission shaft.

[0021] Both ends of the second vertical rod are provided with second connecting portions, the second vertical rod is hinged to the third connecting rod and the fourth connecting rod through the two second connecting portions, and the second vertical rod always remains vertical.

[0022] The fourth connecting rod is fixed on the connecting seat.

[0023] Further, the first transmission shaft and the second transmission shaft are polygonal in cross section.

[0024] Preferably, the bracket is provided with a protective shell, and the protective shell covers the rotating shaft, the reset module and the grounding knife.

[0025] Compared with the prior art, the grounding switch mechanism for the cubicle-type switchgear has the following advantages:

[0026] (1) By arranging the grounding switch mechanism in the cable chamber, the personal safety is protected, the motor is prevented from running due to the misoperation of closing the drawer switch, and the line is discharged during power failure maintenance and prevented from being misfed to the maintenance line.

[0027] (3) Simple structure and convenient to use. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 The structure of the grounding switch mechanism for the cubicle-type switchgear Figure 1 ;

[0029] Figure 2 A structure diagram of a grounding switch mechanism for a cubicle Figure 2 . DETAILED DESCRIPTION

[0030] The utility model will be further explained in connection with the drawings and specific embodiments.

[0031] As Figure 1 and Figure 2 shown, a grounding switch mechanism for a cubicle includes a first transmission shaft 1, a connecting seat 2, a first connecting rod 3, a first vertical rod 4, a second connecting rod 5, a support 6, a rotating shaft 7 and a grounding knife 8; the first transmission shaft 1 is horizontally rotatably arranged at the bottom of the cable chamber 3, and one end of the first transmission shaft 1 is connected to a driving motor 9 for driving the first transmission shaft 1 to rotate; the connecting seat 2 is fixedly sleeved on the first transmission shaft 1; one end of the first connecting rod 3 is fixed on the connecting seat 2; both ends of the first vertical rod 4 are provided with first connecting parts 10, the lower end of the first vertical rod 4 is hingedly connected to the first connecting rod 3 through the first connecting part, and the upper end of the first vertical rod 4 is hingedly connected to the second connecting rod 5 through the first connecting part, and the first vertical rod 4 always remains vertical; one end of the second connecting rod 5 is fixedly sleeved on the rotating shaft 7; the support 6 is vertically fixed in the cable chamber 3, and the rotating shaft 7 is horizontally rotatably arranged on the support 6; the grounding knife 8 is fixedly sleeved on the rotating shaft 7.

[0032] When the circuit breaker 8 is disconnected, the driving motor 9 is started, the first transmission shaft 1 rotates, the connecting seat 2 rotates, and under the transmission of the first connecting rod 3, the first vertical rod 4 and the second connecting rod 5, the rotating shaft 7 rotates, so that the grounding knife 8 connects the grounding head on the switching piece, protects personal safety, prevents misoperation of closing the drawer switch to cause the motor to run, and discharges the line and prevents misfeeding of power to the maintenance line during power failure maintenance.

[0033] Further, in the embodiment, as Figure 1 and Figure 2 shown, at least two reset modules are further provided on the support 6, the two reset modules are symmetrically arranged on the support 6, and the reset module includes a mounting seat 11, a spring 12 and a connecting plate 13; the mounting seat 11 is hingedly connected to the support 6, one end of the spring 12 is connected to the mounting seat 11, the other end is connected to the connecting plate 13, and the connecting plate 13 is fixedly sleeved on the rotating shaft 7; in this way, when it is necessary to disconnect the grounding knife 8, the driving motor 9 is turned off, the elastic force of the spring 12 drives the rotating shaft 7 to rotate to restore the initial position, and the grounding knife 8 is reset. In the embodiment, the number of reset modules is two.

[0034] In the embodiment, as Figure 1As shown, the grounding switch mechanism further comprises a manual mechanism, the manual mechanism comprising a second transmission shaft 14, a third connecting rod 15, a second vertical rod 16 and a fourth connecting rod 17; the second transmission shaft 14 is horizontally arranged in the cable chamber 3 and above the first transmission shaft 1, and the second transmission shaft 14 is parallel to the first transmission shaft 1; the outer end of the second transmission shaft 14 extends out of the outer wall of the cable chamber 3, and the outer end of the second transmission shaft 14 is provided with a plug hole (not shown in the figure) for facilitating the rotation of the second transmission shaft 14; one end of the third connecting rod 15 is fixedly sleeved on the second transmission shaft 14; the second vertical rod 16 is provided with a second connecting part 18 at both ends, and the second vertical rod 16 is hingedly connected with the third connecting rod 15 and the fourth connecting rod 17 through the two second connecting parts 18 respectively, and the second vertical rod 16 always remains vertical; the fourth connecting rod 17 is fixed on the connecting seat 2; in this way, when the driving motor 9 fails, the staff inserts a tool into the plug hole and rotates the second transmission shaft 14, and under the driving of the third connecting rod 15, the second vertical rod 16 and the fourth connecting rod 17, the first transmission shaft 1 rotates to make the first vertical rod 4 move in the vertical direction, and finally drives the grounding knife to close.

[0035] In the embodiment, the cross sections of the first transmission shaft 1 and the second transmission shaft 14 are polygonal structures, which prevent the components fixedly sleeved from slipping.

[0036] In the embodiment, the bracket 6 is provided with a protective shell (not shown in the figure), which covers the rotating shaft, the reset module and the grounding knife 8 and plays a protective role.

[0037] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the utility model, and the ordinary skilled in the art can change, modify, replace and transform the above-mentioned embodiments within the scope of the utility model.

Claims

1. An earthing switch mechanism for a metal-clad switchgear, characterized by, The utility model provides a kind of grounding switch mechanism, including first transmission shaft, connecting seat, first connecting rod, first vertical rod, second connecting rod, support, rotating shaft and ground knife; The first transmission shaft is horizontally rotatably arranged at the bottom of the cable chamber, and one end of the first transmission shaft is connected to a driving motor for driving the first transmission shaft to rotate. The connecting seat is fixedly sleeved on the first transmission shaft. One end of the first connecting rod is fixed on the connecting seat. The first vertical rod is provided with a first connecting portion at both ends, the lower end of the first vertical rod is hingedly connected to the first connecting rod through the first connecting portion, and the upper end of the first vertical rod is hingedly connected to the second connecting rod through the first connecting portion, and the first vertical rod always remains vertical. One end of the second connecting rod is fixedly sleeved on the rotating shaft. The support is vertically fixed in the cable chamber, and the rotating shaft is horizontally rotatably arranged on the support. The ground knife is fixedly sleeved on the rotating shaft. The circuit breaker is connected with an adapter, and the grounding head of the adapter faces the ground knife.

2. An earthing switch mechanism for a metal-clad switchgear according to claim 1, characterized in that, The support is further provided with at least two reset modules, and the two reset modules are symmetrically arranged on the support. The mounting seat is hingedly connected to the support, one end of the spring is connected to the mounting seat, and the other end of the spring is connected to the connecting plate, and the connecting plate is fixedly sleeved on the rotating shaft.

3. An earthing switch mechanism for a metal-clad switchgear according to claim 1 or 2, characterized in that, The grounding switch mechanism further comprises a manual mechanism, and the manual mechanism comprises a second transmission shaft, a third connecting rod, a second vertical rod and a fourth connecting rod. The second transmission shaft is horizontally rotatably arranged in the cable chamber and located above the first transmission shaft, and the second transmission shaft is parallel to the first transmission shaft. The outer end of the second transmission shaft extends out of the outer wall of the cable chamber, and the outer end of the second transmission shaft is provided with a plug-in hole. One end of the third connecting rod is fixedly sleeved on the second transmission shaft. The second vertical rod is provided with a second connecting portion at both ends, and the second vertical rod is hingedly connected to the third connecting rod and the fourth connecting rod through the two second connecting portions, and the second vertical rod always remains vertical. The fourth connecting rod is fixed on the connecting seat.

4. An earthing switch mechanism for a metal-clad switchgear according to claim 3, wherein The cross section of the first transmission shaft and the second transmission shaft is a polygonal structure.

5. An earthing switch mechanism for a metal-clad switchgear according to claim 2, wherein The support is provided with a protective shell, and the protective shell covers the rotating shaft, the reset module and the ground knife.

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