CN210110560U

CN210110560U - Energy storage auxiliary mechanism of electrical switch

Info

Publication number: CN210110560U
Application number: CN201920996574.7U
Authority: CN
Inventors: 陈静; 王骋; 任山波; 黄建俊
Original assignee: Shanghai Liangxin Electrical Co Ltd
Current assignee: Shanghai Liangxin Electrical Co Ltd
Priority date: 2019-06-28
Filing date: 2019-06-28
Publication date: 2020-02-21
Anticipated expiration: 2029-06-28

Abstract

An energy storage assist mechanism for an electrical switch comprising a set of side plates (1, 1') arranged face-to-face, characterized in that: a set of face-to-face shaped plates (2,2 ') is fixedly mounted between the set of face-to-face side plates (1, 1'), at least one shaped plate of the set of face-to-face shaped plates (2,2 ') is pivotally connected with a shaped link rod (3), a split bearing (4) is fixedly mounted at a recess of an end portion of a side wall of the set of face-to-face shaped plates (2, 2'), both ends of a camshaft (5) are mounted on the split bearing (4), and a cam (6) is fixed on the camshaft (5). The energy storage auxiliary mechanism is arranged into a fixed and movable connected structure to share the load of the energy storage shaft, eliminate the alternating load borne by other parts of the operating mechanism, increase the strength of the operating mechanism and simultaneously enlarge the self-adjustable range of the operating mechanism.

Description

Energy storage auxiliary mechanism of electrical switch

Technical Field

The utility model belongs to the technical field of electrical switching equipment, specifically say so and relate to an energy storage complementary unit of electrical switch.

Background

Electrical switching apparatus such as circuit breakers provide protection for electrical systems from electrical fault conditions such as current overloads, short circuits, abnormal voltages, etc. Generally, such circuit breakers include an operating mechanism for interrupting the current flowing through the conductor in the electrical system by opening the movable contact when, for example, the trip unit detects the electrical fault. The operating mechanism is the core component of such circuit breakers, and the energy storage system is the core component of the operating mechanism to complete the switching-on function.

The operating device of circuit breaker is provided with energy storage system, and traditional circuit breaker operating device energy storage system's working process is: when energy is stored, the main shaft rotates to drive the cam to rotate, and the cam pushes the roller on the energy storage lever to compress the energy storage spring. When the mechanism is switched on, the energy storage spring releases energy, the energy storage lever rotates and presses down at a high speed to drive the main transmission mechanism to close the main contact, and the residual energy of the spring is released on the limiting shaft. The spring force value of the traditional energy storage system is increased along with the increase of the spring force value of the contact at present, so that the strength of an energy storage shaft is reduced; and secondly, the force values of the closing energy storage and the opening energy storage are inconsistent, so that the operating mechanism bears alternating load, the service life of the operating mechanism is shortened, the adjustable range of the whole structure is small, and the space utilization rate is low.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an aim at is exactly the technical defect who exists to above-mentioned current operating device's energy storage system, provides an electrical switch's energy storage complementary unit, through setting energy storage complementary unit to fixed and movable structure that is connected, shares the load of energy storage axle, eliminates the alternating load that all the other parts of energy storage system bore, increases energy storage system intensity, has enlarged the scope that operating device can supply the adjustment simultaneously, promotes operating device space utilization.

Technical scheme

In order to achieve the technical purpose, the utility model provides a pair of electrical switch's energy storage complementary unit, it includes face-to-face and a set of curb plate of establishing, its characterized in that: the special-shaped plates are fixedly arranged between the side plates, at least one special-shaped plate in the special-shaped plates is connected with a special-shaped connecting rod in a pivoting mode, the structure enlarges the adjustable range of the operating mechanism and improves the space utilization rate of the operating mechanism, a split bearing is fixedly arranged at a concave position on the side wall end of the special-shaped plates, the structure shares the load of the energy storage shaft and eliminates the alternating load born by the rest parts of the operating mechanism, two ends of the camshaft are arranged on the split bearing, and the cam is arranged on the camshaft.

Furthermore, an energy release shaft is arranged between the group of face-to-face special-shaped plates, two ends of the energy release shaft are arranged in arc-shaped slots on the group of face-to-face special-shaped plates and can slide, the cam can rotate to release energy in the sliding process of the energy release shaft, and a first reset torsion spring is arranged on a first through shaft on the group of face-to-face side plates and can drive the energy release shaft to reset.

Furthermore, a second reset torsion spring is arranged between the group of face-to-face special-shaped plates and can enable the special-shaped connecting rod to rotate and reset.

Furthermore, the second reset torsion spring is arranged on the pivot connecting shaft of the at least one special-shaped plate and the special-shaped connecting rod, one end of the second reset torsion spring is propped against the upper surface of the special-shaped connecting rod, and the other end of the second reset torsion spring is propped against the reset shaft on the group of side plates which are arranged face to face.

Furthermore, one end of the first reset torsion spring is propped against the arc-shaped slotted hole, and the other end of the first reset torsion spring is propped against the energy release shaft.

Further, the special-shaped connecting rod is positioned between the group of the special-shaped plates arranged face to face, and the rotating plane of the special-shaped connecting rod is parallel to the plate surfaces of the group of the special-shaped plates arranged face to face, so that the optimal moving direction for eliminating the alternating load can be obtained.

Preferably, the cross section of the shaped connecting rod is

The three-dimensional structure can be lifted offAnd (4) intermediate utilization rate.

Furthermore, a plurality of mounting holes perpendicular to the rotating plane of the special-shaped connecting rod are formed in the special-shaped connecting rod, and the space utilization rate can be improved due to the three-dimensional structure.

Preferably, the included angle range of the outer corner side edges at the two ends of the special-shaped connecting rod is 80-120 degrees, the included angle range of the inner corner side edges at the two ends of the special-shaped connecting rod is 80-120 degrees, and the included angle range of the two side edges in the special-shaped connecting rod is 80-135 degrees.

Advantageous effects

The utility model provides a pair of electrical switch's energy storage complementary unit through setting the energy storage complementary unit to fixed and movable structure that is connected, shares the load of energy storage axle, eliminates the alternating load that all the other parts of energy storage system received, increases energy storage system intensity, has enlarged the scope that operating device can supply the adjustment simultaneously, promotes operating device space utilization.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a schematic view of an installation structure of a special-shaped plate in the embodiment of the present invention.

Fig. 3a is a schematic structural diagram (a) of the special-shaped plate in the embodiment of the present invention.

Fig. 3b is a schematic structural diagram (two) of the special-shaped plate in the embodiment of the present invention.

Fig. 3c is a schematic structural diagram (three) of the special-shaped plate in the embodiment of the present invention.

Fig. 4 is a schematic view of the cam mounting structure in the embodiment of the present invention.

Fig. 5 is a schematic view of a special-shaped connecting rod structure in an embodiment of the present invention.

Fig. 6 is a schematic view of the shape of the special-shaped connecting rod in the embodiment of the present invention.

Fig. 7a is a schematic view of the sectional direction of the special-shaped connecting rod in the embodiment of the present invention.

Fig. 7b is a schematic cross-sectional view of the special-shaped connecting rod according to the embodiment of the present invention.

Fig. 8 is a schematic view of the installation structure of the first reset torsion spring and the second reset torsion spring in the embodiment of the present invention.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

Examples

As shown in fig. 1 and 2, an energy storage auxiliary mechanism of an electrical switch comprises a set of side plates 1,1 ' arranged face to face, a set of special-shaped plates 2,2 ' arranged face to face and fixedly installed between the set of side plates 1,1 ' arranged face to face, as shown in fig. 3a,3b and 3c, the pair of oppositely facing shaped plates 2,2 ' in this embodiment is fixedly mounted between the pair of oppositely facing side plates 1,1 ' by means of a first through shaft 9, a second through shaft 9 ' and a non-through shaft 13, at least one of the pair of oppositely arranged profiled sheets 2, 2' is pivotally connected with a profiled connecting rod 3, the special-shaped connecting rod 3 is located between the pair of face-to-face special-shaped plates 2,2 ', and a rotating plane of the special-shaped connecting rod 3 is parallel to the plate surfaces of the pair of face-to-face special-shaped plates 2, 2'. As shown in the attached figures 7a and 7b, the cross section of the special-shaped connecting rod 3 in three directions C-C, F-F, E-E is

As shown in fig. 5 and 6, the shaped link 3 is provided with a plurality of mounting holes 301 perpendicular to the rotation plane of the shaped link 3. The included angle between the outer corner side edge a2 at the two ends of the special-shaped connecting rod 3 and the a6 ranges from 80 degrees to 120 degrees, the included angle between the inner corner side edge a3 at the two ends of the special-shaped connecting rod 3 and the a5 ranges from 80 degrees to 120 degrees, and the included angle between the a1 and the a4 at the two sides inside the special-shaped connecting rod 3 ranges from 80 degrees to 135 degrees.

As shown in fig. 3a,3b and 3c, a split bearing 4 is fixedly mounted at a recess on an end of a side wall of the pair of oppositely facing shaped plates 2, 2', both ends of a cam shaft 5 are mounted on the split bearing 4, and as shown in fig. 4, a cam 6 is fixed on the cam shaft 5. An energy releasing shaft 7 is arranged between the pair of face-to-face special-shaped plates 2,2 ', two ends of the energy releasing shaft 7 are installed in arc-shaped slots 201 on the pair of face-to-face special-shaped plates 2,2 ' and can slide, the cam 6 can rotate to release energy in the sliding process of the energy releasing shaft 7, a restoring torsion spring 8 is installed on a through shaft 9 on the pair of face-to-face side plates 1,1 ' and can drive the energy releasing shaft 7 to restore, specifically, as shown in fig. 8, one end of the restoring torsion spring 8 abuts against the arc-shaped slots 201, and the other end abuts against the energy releasing shaft 7. A second reset torsion spring 10 is arranged between the pair of face-to-face special-shaped plates 2 and 2', and the second reset torsion spring 10 can enable the special-shaped connecting rod 3 to rotate and reset. Specifically, as shown in fig. 8, the second restoring torsion spring 10 is mounted on the pivot connecting shaft 11 of the at least one shaped plate and the shaped link 3, and has one end abutting against a4 on the shaped link 3 and the other end abutting against the restoring shaft 12 on the set of side plates 1, 1' facing each other.

The working principle of the embodiment is as follows: in the energy storage process, the cam shaft 5 rotates to store energy along with the force input from the outside in the split bearing 4 on the special-shaped plate 2, 2', and because the fixed structure part in the energy storage auxiliary mechanism is additionally arranged to bear the energy storage load borne by the cam shaft, the stress condition of the cam shaft 5 is greatly improved; meanwhile, under the action of the second reset torsion spring 10, the special-shaped connecting rod rotates and lifts around the pivoting connecting shaft 11, and the energy storage preparation of the operating mechanism is completed; because the movable structure part in the energy storage auxiliary mechanism is additionally arranged, the energy storage auxiliary mechanism replaces the camshaft 5 to bear alternating load for resetting the operating mechanism in a switching-on or switching-off state. The characteristics on the special-shaped connecting rod 3 can ensure that the operating mechanism is accurately reset.

The structure, proportion, size, quantity, etc. shown in the attached drawings of the embodiment of the present invention are only used for matching with the contents disclosed in the specification, so as to be known and read by people familiar with the art, not for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and the modification of any structure, the change of proportion relation or the adjustment of size should still fall within the range that the technical contents can be covered without affecting the function that the present invention can produce and the purpose that can be achieved. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle", "clockwise", "counterclockwise", etc. used in the present specification are for the sake of clarity only, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof are considered to be the scope of the present invention without substantial changes in the technical content.

Claims

1. An energy storage assist mechanism for an electrical switch comprising a set of side plates (1, 1') arranged face-to-face, characterized in that: a set of oppositely arranged profiled plates (2,2 ') is fixedly arranged between the oppositely arranged set of side plates (1, 1'), at least one profiled plate in the set of oppositely arranged profiled plates (2,2 ') is pivotally connected with a profiled connecting rod (3), a split bearing (4) is fixedly arranged at a concave part of the end part of the side wall of the oppositely arranged profiled plates (2, 2'), two ends of a cam shaft (5) are arranged on the split bearing (4), and a cam (6) is arranged on the cam shaft (5).

2. An energy storage assist mechanism for an electrical switch as defined in claim 1, wherein: an energy releasing shaft (7) is arranged between the pair of face-to-face special-shaped plates (2,2 '), two ends of the energy releasing shaft (7) are installed in arc-shaped slotted holes (201) in the pair of face-to-face special-shaped plates (2,2 ') and can slide, the cam (6) can rotate to release energy in the sliding process of the energy releasing shaft (7), and a first reset torsion spring (8) is installed on a first through shaft (9) in the pair of face-to-face side plates (1,1 ') and can drive the energy releasing shaft (7) to reset.

3. An energy storage assist mechanism for an electrical switch as defined in claim 1, wherein: a second reset torsion spring (10) is arranged between the pair of oppositely-arranged special-shaped plates (2, 2'), and the second reset torsion spring (10) can enable the special-shaped connecting rod (3) to rotate and reset.

4. An energy storage assist mechanism for an electrical switch as defined in claim 3, wherein: the second reset torsion spring (10) is arranged on a pivoting connecting shaft (11) of the at least one special-shaped plate and the special-shaped connecting rod (3), one end of the second reset torsion spring is propped against the special-shaped connecting rod (3), and the other end of the second reset torsion spring is propped against a reset shaft (12) on the group of side plates (1, 1') which are arranged face to face.

5. An energy storage assist mechanism for an electrical switch as defined in claim 2, wherein: one end of the first reset torsion spring (8) is propped against the arc-shaped slotted hole (201), and the other end of the first reset torsion spring is propped against the energy release shaft (7).

6. An energy storage assist mechanism for an electrical switch as defined in claim 1, wherein: the special-shaped connecting rod (3) is located between the pair of face-to-face special-shaped plates (2,2 '), and a rotating plane of the special-shaped connecting rod (3) is parallel to plate surfaces of the pair of face-to-face special-shaped plates (2, 2').

7. An energy storage assist mechanism for an electrical switch as defined in claim 1, wherein: the cross section of the special-shaped connecting rod (3) is

8. An energy storage assist mechanism for an electrical switch as defined in claim 1, wherein: the special-shaped connecting rod (3) is provided with a plurality of mounting holes (301) perpendicular to the rotating plane of the special-shaped connecting rod (3).

9. An energy storage assist mechanism for an electrical switch as defined in claim 1, wherein: the included angle range of the outer angle side edges at the two ends of the special-shaped connecting rod (3) is 80-120 degrees, the included angle range of the inner angle side edges at the two ends of the special-shaped connecting rod (3) is 80-120 degrees, and the included angle range of the two side edges inside the special-shaped connecting rod (3) is 80-135 degrees.