Auxiliary contact structure of grounding switch

Abstract

The utility model relates to an auxiliary contact structure of a grounding switch, which comprises a pressing plate which is positioned on a grounding linkage large shaft and touches a closing travel switch and an opening travel switch, and the grounding linkage large shaft is positioned between the closing travel switch and the opening travel switch. And the trigger end of the closing travel switch and the trigger end of the opening travel switch are respectively positioned on two sides of the pressing plate. When the grounding interlocking device is used, the grounding interlocking large shaft rotates to drive the pressing plate to rotate and directly drive switching on and switching off, so that middle mechanical interlocking structures are reduced, the risk of clamping or hysteresis is reduced, an auxiliary point is replaced by a travel switch, the accuracy and timeliness of signal transmission are realized, the inaccuracy of elements is eliminated, and the service life of the grounding interlocking device is prolonged. Therefore, the accuracy of switching-on and switching-off indication is realized, the safety of the switch cabinet is greatly improved, the grounding linkage large shaft crimps the travel switch for switching-on and switching-off in the clockwise direction and the anticlockwise direction, the condition of mistaken pressing is effectively avoided, and the reliability and the safety of the switch cabinet are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of switch cabinet especially to the technical field of grounding switch, specifically refers to a grounding switch auxiliary contact structure. BACKGROUND

[0002] 10kV high voltage switch cabinet is a kind of complete switch equipment and control equipment, for the complete electrical equipment of AC voltage below 10kV. Wherein feeder cabinet is installed with grounding switch and grounding interlock, instrument room installs the indication of grounding switch's opening and closing.

[0003] Due to the mechanical and electrical interlocking between opening and closing indication and grounding interlock, there is a risk of jamming or sluggishness in the mechanical interlocking mechanism, in addition, the signal transmission of the auxiliary point element used at present has inaccuracy, which is reflected in that when the grounding switch is in the intermediate position of opening and closing, the indicator light still has a bright state, and normally the opening and closing indicator light should be all off in the intermediate position, this phenomenon causes unclear display of the opening and closing of the grounding switch of switch cabinet, and there is a safety hazard. INVENTION CONTENTS

[0004] The utility model provides a grounding switch auxiliary contact structure in view of the deficiency of prior art, reduces mechanical interlocking structure, replaces the use of auxiliary point element by increasing terminal, so as to ensure clear display.

[0005] The utility model discloses a grounding switch auxiliary contact structure, including the pressing plate of the contact closing stroke switch and the contact opening stroke switch on the grounding interlock big axle, and the grounding interlock big axle is located between the contact closing stroke switch and the contact opening stroke switch, and the trigger end of the contact closing stroke switch and the trigger end of the contact opening stroke switch are located at the two sides of the pressing plate respectively.

[0006] In use, the pressing plate of the trigger end of the contact closing stroke switch and the trigger end of the contact opening stroke switch is directly installed on the grounding interlock big axle, the pressing plate is rotated by the rotation of the grounding interlock big axle, and the contact closing and the contact opening are directly driven, so as to reduce the intermediate mechanical interlocking structure, reduce the risk of jamming or sluggishness, replace the auxiliary point with the stroke switch, the element accuracy of the stroke switch is better than that of the auxiliary point element, the internal structure can effectively reduce the signal delay, so as to realize the accuracy and timeliness of signal transmission, eliminate the inaccuracy of the element itself, realize the accuracy of the opening and closing indication, greatly improve the safety of switch cabinet, the grounding interlock big axle is pressed from clockwise and counterclockwise directions, the stroke switch of the contact closing and the contact opening effectively avoids the mispressing condition, improves the reliability and safety of switch cabinet.

[0007] As preferred, the pressing plate comprises a cam arranged on the grounding interlocking big shaft, and a protruding part of the cam is located between the triggering end of the closing stroke switch and the triggering end of the opening stroke switch. The preferred scheme realizes the rotation of the triggering closing stroke switch and the triggering opening stroke switch by the arrangement of the cam on the grounding interlocking big shaft.

[0008] As preferred, two cams are arranged, and the two cams are respectively arranged corresponding to the closing stroke switch and the opening stroke switch, and the axial length of the cam is adapted to the axial length of the corresponding closing stroke switch or opening stroke switch.

[0009] The preferred scheme facilitates the corresponding replacement when one cam is damaged by the arrangement of the two cams.

[0010] As preferred, the cam is arranged on the grounding interlocking big shaft through a shaft sleeve, and the grounding interlocking big shaft is further provided with a shaft sleeve located between the closing stroke switch and the opening stroke switch.

[0011] The preferred scheme facilitates the adjustment of the position of the cam by the arrangement of the shaft sleeve, and an additional shaft sleeve is arranged between the two pressing plates to separate the two pressing plates, thereby preventing the opening (closing) stroke switch from being affected by the closing (opening) stroke of the pressing plate. A gap is left between the two groups of stroke switches and the pressing plate to prevent the two groups of pressing plates from pressing the stroke switch.

[0012] As preferred, the closing stroke switch and the opening stroke switch are arranged along the axial direction of the grounding interlocking big shaft, and in the axial direction of the interlocking big shaft, the closing stroke switch and the opening stroke switch are arranged perpendicularly, and the closing stroke switch and the opening stroke switch are oppositely arranged with respect to the grounding interlocking big shaft, and the included angle between the closing stroke switch and the opening stroke switch and the shell is 50°-70°.

[0013] The preferred scheme facilitates the pressing plate to rotate within the 90° interval to quickly realize the clockwise pressing of the closing position stroke switch and the counterclockwise pressing of the opening position stroke switch under the driving of the grounding interlocking big shaft, and simultaneously realizes the misaligned pressing of the opening and closing, thereby improving the safety and stability of the switch cabinet.

[0014] As preferred, the closing stroke switch and the opening stroke switch are respectively installed on two mounting plates, and the mounting plates are detachably connected to the shell.

[0015] The preferred scheme facilitates the installation of the closing stroke switch and the opening stroke switch on the shell by the arrangement of the mounting plates.

[0016] As preferred, the shell is further provided with a wiring terminal located at the lower end of the closing stroke switch and the opening stroke switch, the closing stroke switch and the opening stroke switch are connected to the corresponding wiring terminal, and the lead wires of the wiring terminal are connected to the corresponding grounding switch opening and closing indication lights in the instrument room after being gathered and bundled.

[0017] The preferred scheme is used in the secondary line of the opening and closing travel switch to the instrument room by using the segmented pressure connection, the secondary line of the travel switch can be connected in advance, the secondary cabinet wiring can be directly connected to the terminal from the instrument box, and finally the secondary line of the travel switch is connected to the terminal, the use of the terminal as the relay point of the secondary line can reduce the difficulty of the secondary wiring, improve the standardization degree of the secondary line manufacturing, and optimize the complexity of the installation.

[0018] The beneficial effects of the utility model are as follows: the pressing plate of the trigger end of the closing travel switch and the trigger end of the opening travel switch is directly installed on the grounding interlocking large shaft, the pressing plate is driven to rotate through the rotation of the grounding interlocking large shaft, the closing and opening are directly driven, thereby reducing the intermediate mechanical interlocking structure, thereby reducing the risk of clamping or sluggishness, the auxiliary point is replaced by the travel switch, the accuracy of the elements of the travel switch is better than that of the auxiliary point elements, the internal structure can effectively reduce the signal delay, thereby realizing the accuracy and timeliness of signal transmission, eliminating the inaccuracy of the elements, thereby realizing the accuracy of the opening and closing indication, greatly improving the safety of the switch cabinet, the grounding interlocking large shaft is pressed from the clockwise and counterclockwise directions, the travel switch of the opening and closing, effectively avoiding the mispressing condition, improving the reliability and safety of the switch cabinet, the use of the terminal as the relay point of the secondary line can reduce the difficulty of the secondary wiring, improve the standardization degree of the secondary line manufacturing, and optimize the complexity of the installation. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a use state diagram of the utility model;

[0020] Figure 2 It is a three-dimensional schematic view of the grounding interlocking large shaft and the travel switch;

[0021] Figure 3 It is a travel switch pressing plate and travel switch side surface cooperation schematic view of the utility model;

[0022] Figure 4 It is a wiring schematic view of the utility model;

[0023] In the drawings:

[0024] 1, shaft sleeve, 2, pressing plate, 3, closing travel switch, 4, mounting plate, 5, terminal, 6, grounding interlocking large shaft, 7, opening travel switch. DETAILED DESCRIPTION

[0025] In order to clearly illustrate the technical features of the scheme, the scheme will be described below through specific embodiments.

[0026] Referring to the drawings Figures 1-4 The utility model discloses a grounding switch auxiliary contact structure, including the grounding interlocking big axle 6 of the axle of shell, the lower end of grounding interlocking big axle 6 is equipped with the closing stroke switch 3 and the opening stroke switch 7 along the axial arrangement of grounding interlocking big axle 6, and the closing stroke switch 3 and the opening stroke switch 7 are installed on two mounting plates 4 respectively, and the mounting plate 4 is bolted on the shell, and there is a gap between the closing stroke switch 3 and the opening stroke switch 7, and there is a gap between the two mounting plates 4.

[0027] In the interlocking big axle axial direction, the closing stroke switch 3 and the opening stroke switch 7 are vertically arranged, and the closing stroke switch 3 and the opening stroke switch 7 are symmetrically arranged about the grounding interlocking big axle 6, the included angle of the closing stroke switch 3 and the opening stroke switch 7 with the shell is 60 °, the trigger end of the closing stroke switch 3 is parallel with the closing stroke switch 3, the trigger end of the opening stroke switch 7 is parallel with the opening stroke switch 7, and the two trigger ends are located on the inner side.

[0028] The grounding interlocking big axle 6 is equipped with two pressure plates 2 corresponding to the two stroke switches, and the pressure plate 2 includes a cam arranged on the grounding interlocking big axle 6 through a shaft sleeve 1, and the protruding part of the cam is located between the trigger end of the closing stroke switch 3 and the trigger end of the opening stroke switch 7.

[0029] The two cams are correspondingly arranged with the closing stroke switch 3 and the opening stroke switch 7, and the axial length of the cam is adapted to the axial length of the corresponding closing stroke switch 3 or opening stroke switch 7.

[0030] The grounding interlocking big axle 6 is also provided with a shaft sleeve 1 located between the closing stroke switch 3 and the opening stroke switch 7, that is, a third shaft sleeve 1 is also arranged between the two cams.

[0031] The pressure plate 2 is within the 90 ° interval, and under the driving of the grounding interlocking big axle 6, the closing stroke switch 3 is pressed clockwise, and the opening stroke switch 7 is pressed counterclockwise, and the two direction pressing of the scheme and the independent separation mode of the closing and opening stroke switches effectively avoid the mispressing condition, and improve the reliability and safety of the switch cabinet.

[0032] The shell is also provided with a terminal 5 located at the lower end of the closing stroke switch 3 and the opening stroke switch 7, the closing stroke switch 3 and the opening stroke switch 7 are connected to the corresponding terminal 5, and the lead of the terminal 5 is connected to the corresponding grounding switch closing and opening indication lamp in the instrument room after being gathered and bundled.

[0033] The utility model discloses a press plate 2 and shaft sleeve 1 are according to corresponding angle and are worn on the grounding interlock big shaft 6, and the lower installation plate 4 and the opening and closing stroke switch 7 and the closing stroke switch 3 are installed, and the lowermost installation terminal 5 is installed, when operating, the grounding interlock big shaft 6 drives the trigger end of closing stroke switch 3 to rotate clockwise, and the trigger end of opening and closing stroke switch 7 is rotated counterclockwise, and the reverse direction misregistration pressure welding is realized.

[0034] The press plate 2 of the trigger end of closing stroke switch 3 and the trigger end of opening and closing stroke switch 7, namely cam, is directly installed on the grounding interlock big shaft 6, and the press plate 2 is rotated by the rotation of the grounding interlock big shaft 6, directly drives closing and opening, thereby reducing the intermediate mechanical interlocking structure, thereby reducing the risk of clamping or sluggish, by replacing the auxiliary point with the stroke switch, the element accuracy of the stroke switch is superior to that of the auxiliary point element, and the internal structure can effectively reduce the signal delay, thereby realizing the accuracy and timeliness of signal transmission, eliminating the inaccuracy of the element itself, thereby realizing the accuracy of opening and closing indication, greatly improving the safety of the switch cabinet, and the grounding interlock big shaft 6 is pressure welded from clockwise and counterclockwise two directions, the opening and closing stroke switch, effectively avoiding the mispressure condition, improving the reliability and safety of the switch cabinet, and the use of the terminal as the relay point of the secondary line can reduce the difficulty of secondary wiring, improve the standardization degree of the secondary line manufacturing, and the use of the terminal optimizes the complexity during installation.

[0035] Of course, the above description is not limited to the above examples, and the technical features not described in the utility model can be realized by or using the prior art, which will not be repeated here; the above embodiments and drawings are only used to illustrate the technical scheme of the utility model and are not limited to the utility model, and the ordinary skilled in the art should understand that the changes, modifications, additions or replacements made by the ordinary skilled in the art within the essential scope of the utility model do not deviate from the purpose of the utility model, and should also belong to the protection scope of the claims of the utility model.

Claims

1. A ground switch auxiliary contact structure, characterized by: The pressing plate (2) is arranged on the grounding interlocking shaft (6) and contacts the closing stroke switch (3) and the opening stroke switch (7), the grounding interlocking shaft (6) is arranged between the closing stroke switch (3) and the opening stroke switch (7), and the triggering end of the closing stroke switch (3) and the triggering end of the opening stroke switch (7) are arranged on the two sides of the pressing plate (2) respectively.

2. The ground switch auxiliary contact structure of claim 1, wherein: The pressing plate (2) comprises a cam arranged on the grounding interlocking shaft (6), and the protruding part of the cam is arranged between the triggering end of the closing stroke switch (3) and the triggering end of the opening stroke switch (7).

3. The ground switch auxiliary contact structure of claim 2, wherein: The cam is provided with two cams, and the two cams are arranged corresponding to the closing stroke switch (3) and the opening stroke switch (7) respectively, and the axial length of the cam is adapted to the axial length of the corresponding closing stroke switch (3) or opening stroke switch (7).

4. The ground switch auxiliary contact structure of claim 3, wherein: The cam is arranged on the grounding interlocking shaft (6) through the shaft sleeve (1), and the grounding interlocking shaft (6) is further provided with the shaft sleeve (1) arranged between the closing stroke switch (3) and the opening stroke switch (7).

5. The ground switch auxiliary contact structure of claim 1, wherein: The closing stroke switch (3) and the opening stroke switch (7) are arranged along the axial direction of the grounding interlocking shaft (6), and in the axial direction of the interlocking shaft, the closing stroke switch (3) and the opening stroke switch (7) are arranged perpendicularly, and the closing stroke switch (3) and the opening stroke switch (7) are arranged oppositely with respect to the grounding interlocking shaft (6), and the included angle between the closing stroke switch (3) and the opening stroke switch (7) and the shell is 50°-70°.

6. The ground switch auxiliary contact structure of claim 5, wherein: The closing stroke switch (3) and the opening stroke switch (7) are arranged on two mounting plates (4) respectively, and the mounting plates (4) are detachably connected to the shell.

7. The ground switch auxiliary contact structure of claim 6, wherein: The shell is further provided with a wiring terminal (5) arranged at the lower end of the closing stroke switch (3) and the opening stroke switch (7), the closing stroke switch (3) and the opening stroke switch (7) are connected to the corresponding wiring terminal (5), and the lead wire of the wiring terminal (5) is connected to the corresponding grounding switch closing and opening indication lamp in the instrument room after being gathered and bundled.

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