Electric operating device for grounding switch of switch cabinet

Abstract

The invention relates to the technical field of grounding switch operating devices, and discloses a switch cabinet grounding switch electric operating device, which comprises a transmission mechanism and a power source, and is characterized in that the power source is connected with a movable joint of a grounding switch through the transmission mechanism so as to drive the movable joint to be in contact with or not to be in contact with a static joint; a mounting groove is formed in the switch cabinet, the transmission mechanism can be slidably mounted in the mounting groove, a cam mechanism in transmission connection with the transmission mechanism is arranged on a cabinet door of the switch cabinet, and the cam mechanism drives the transmission mechanism to slide in the mounting groove when the cabinet door is opened. The transmission mechanism can be connected with or not connected with the execution part of the power source through sliding of the transmission mechanism. According to the embodiment of the invention, opening and closing of the grounding switch can be realized through remote operation, and a mechanical structure for opening and closing the grounding switch through remote operation is disconnected when the cabinet door is opened, so that the safety of operators is protected.

Description

Technical Field

[0001] The present invention relates to the technical field of grounding switch operating devices, and particularly to an electric operating device for a grounding switch of a switch cabinet. Background Art

[0002] The existing operating methods for grounding switches of switch cabinets are relatively mechanized, unable to achieve remote control, and prone to misoperation or jamming in extreme environments (such as high temperature, high humidity, and strong magnetic interference). In addition, during the maintenance process, maintenance personnel may accidentally energize due to accidentally touching the operating rod, posing serious safety hazards. Therefore, it is necessary to design a grounding switch operating device that is intelligent, remotely controllable, and has a safety protection mechanism to improve the operation convenience and reliability. Summary of the Invention

[0003] The purpose of the present invention is to provide an electric operating device for a grounding switch of a switch cabinet to solve the technical problems in the existing devices.

[0004] An electric operating device for a grounding switch of a switch cabinet includes a transmission mechanism and a power source disposed inside the switch cabinet and used for operating the grounding switch; the grounding switch includes a static contact and a moving contact, and the power source is connected to the moving contact through the transmission mechanism, so that the power source can drive the moving contact to contact or not contact the static contact; an installation groove is provided inside the switch cabinet, the transmission mechanism is slidably installed inside the installation groove, and a cam mechanism transmission-connected to the transmission mechanism is provided on the cabinet door of the switch cabinet. When the cabinet door is opened, the cam mechanism drives the transmission mechanism to slide inside the installation groove, and the transmission mechanism can connect or disconnect the execution part of the power source through its own sliding.

[0005] Further, the moving contact is installed at one end of a crank, the other end of the crank is an operating end, the middle end of the crank is connected to the switch cabinet through a horizontal rotating shaft, the execution end of the transmission mechanism is a driving part, a first chute extending in the vertical direction is provided on the driving part, and the operating end of the crank is slidably connected inside the first chute, so that when the driving part moves linearly in different directions, the crank rotates in different directions, and further, the static contact and the moving contact of the grounding switch contact or separate.

[0006] Further, when the cabinet door of the switch cabinet is closed and the moving contact of the grounding switch and the rotating shaft of the crank are on the same horizontal plane, the static contact and the moving contact contact.

[0007] Furthermore, the static joint is elastic, or the static joint is connected to the switch cabinet via an elastic platform, and when the movable joint and the static joint are in contact, when the cabinet door of the switch cabinet is opened, the crank is further rotated so that the movable joint rotates to the side of the crank's rotating shaft away from its own operating end.

[0008] Furthermore, the power source includes a motor and a polygonal column coaxially mounted on the output shaft of the motor, the transmission mechanism includes a threaded rod, the threaded rod can rotate and move axially inside the mounting groove, one end of the threaded rod is provided with a polygonal hole that is plug-matched with the polygonal column, the driving member has a threaded hole, and the threaded hole of the driving member is spirally connected to the threaded rod.

[0009] Furthermore, the transmission mechanism also includes a polished rod, which is coaxially connected to the threaded rod, and a first ring-shaped part is fixedly connected to the connecting portion between the polished rod and the threaded rod. A second ring-shaped part that can move along its own axis is installed on the polished rod, and a spring is mounted on the polished rod, and two ends of the spring respectively abut against the first ring-shaped part and the second ring-shaped part.

[0010] Furthermore, a second slide groove is provided at a portion of the polished rod away from the threaded rod, the second slide groove extends along the axial direction of the polished rod, and the second annular member is slidably connected to the second slide groove.

[0011] Further, the length of the second slide groove is smaller than the length of the polished rod, and the second slide groove does not penetrate the polished rod along the axial direction.

[0012] Furthermore, a shift fork is provided on the outer side of the first ring member and the second ring member, and the shift fork is connected to the cabinet door of the switch cabinet through the cam mechanism. The shift fork can move along the axial direction of the light rod, and the shift fork contacts the first ring member when it is away from the power source, and contacts the second ring member when it is close to the power source.

[0013] Furthermore, the shift fork includes a main rod and two support rods, the main rod is transmission-connected to the cam mechanism, the two support rods are fixedly connected to the main rod, and the two support rods are respectively located on the side of the first ring member and the second ring member away from each other.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] Provided is an electric operating device for an earthing switch of a switch cabinet, which can realize opening and closing of the earthing switch by remote operation, and disconnects the mechanical structure of opening and closing the earthing switch by remote operation when the cabinet door is opened, thereby protecting the safety of the operator. Brief Description of the Drawings

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only exemplary, and for those of ordinary skill in the art, without creative efforts, other implementation drawings can also be obtained based on the provided drawings.

[0017] Figure 1 Schematic diagram of the first working condition of the present invention;

[0018] Figure 2 Schematic diagram of the second working condition of the present invention;

[0019] Figure 3 Schematic diagram of the third working condition of the present invention;

[0020] Figure 4 Three-dimensional view of the combined state of the transmission part and the power source of the present invention;

[0021] Figure 5 Three-dimensional view of the separated state of the transmission part and the power source of the present invention;

[0022] The reference numerals in the figure are respectively represented as follows: 1 - switchgear; 11 - installation groove; 2 - earthing switch; 21 - crank; 211 - rotating shaft; 212 - operating end; 22 - static joint; 23 - moving joint; 3 - transmission mechanism; 31 - driving member; 311 - first chute; 32 - threaded rod; 321 - multi-faceted hole; 33 - smooth rod; 331 - second chute; 34 - first annular member; 35 - second annular member; 36 - spring; 37 - fork; 4 - power source; 41 - motor; 411 - multi-prism. Detailed Embodiments

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0024] This embodiment provides a motorized operating device for the earthing switch of a switchgear, which has the functions of remote control, intelligent linkage, and automatic safety protection. It allows users to perform opening and closing operations of the earthing switch through a remote terminal (such as a computer or a mobile phone), and can adjust the switch action according to environmental conditions to avoid misoperation caused by abnormal situations. It can also intelligently judge the state of the cabinet door and ensure that the remote opening and closing function is automatically disconnected when the cabinet door is opened to prevent accidental touch operations.

[0025] Reference Figure 1 、 2 、As shown in Fig. 3, the intelligent remote-controlled grounding switch electric operating device, hereinafter referred to as the operating device, includes a transmission mechanism 3 and a power source 4 which are arranged inside the switch cabinet 1 and used to operate the grounding switch 2.

[0026] Reference Figure 1 and Figure 2 When the cabinet door of the switch cabinet 1 is closed, the transmission mechanism 3 is connected to the actuator of the power source 4. At this time, the transmission mechanism 3 can be manually operated or remotely controlled.

[0027] Reference Figure 3 The transmission mechanism 3 is linked with the cabinet door of the switch cabinet 1 through a moving mechanism. When the cabinet door of the switch cabinet 1 is opened, the transmission mechanism 3 is separated from the actuator of the power source 4. At this time, the transmission mechanism 3 can only be manually operated and cannot be remotely controlled, thus eliminating the risk that the grounding switch 2 is remotely disconnected during the operation of the staff.

[0028] Reference Figure 1 and Figure 2 The grounding switch 2 includes a static contact 22 and a moving contact 23. Among them, the moving contact 23 is installed at one end of a crank 21, and the other end of the crank 21 is an operating end 212.

[0029] The method for the transmission mechanism 3 to open and close the grounding switch 2 is as follows:

[0030] The middle end of the crank 21 is connected to the switch cabinet 1 through a horizontal rotating shaft 211, so that the crank 21 can rotate. The execution end of the transmission mechanism 3 is a driving part 31, and a first chute 311 extending in the vertical direction is arranged on the driving part 31. The operating end 212 of the crank 21 is slidably connected to the inside of the first chute 311, so that when the driving part 31 performs a linear motion, the crank 21 performs a rotational motion.

[0031] Furthermore, when the driving part 31 moves linearly in different directions, the crank 21 of the grounding switch 2 rotates in different directions, so that the static contact 22 and the moving contact 23 of the grounding switch 2 are in contact or separated.

[0032] Reference Figure 1 When the driving part 31 moves to the left, the crank 21 rotates counterclockwise and the grounding switch 2 closes. On the contrary, reference Figure 2 When the driving part 31 moves to the right, the crank 21 rotates clockwise, causing the grounding switch 2 to open.

[0033] Specifically, a mounting groove 11 is provided inside the switch cabinet 1, and the transmission mechanism 3 can be slidably installed inside the mounting groove 11, and the transmission mechanism 3 can be connected or disconnected from the actuator of the power source 4 through its own sliding connection, and a cam mechanism that is transmission-connected to the transmission mechanism 3 is provided on the cabinet door of the switch cabinet 1.

[0034] The cabinet door and cam mechanism of the switch cabinet 1 are not shown in the figure. The working principle of the cam mechanism is to convert the rotational motion of the cabinet door of the switch cabinet 1 into the linear reciprocating motion of the transmission mechanism 3, so that when the cabinet door of the switch cabinet 1 is opened or closed, the transmission mechanism 3 can be driven by the cam mechanism to slide synchronously.

[0035] The specific structure of the cam mechanism can refer to any cam mechanism that converts rotational motion into linear reciprocating motion, and this article will not go into details.

[0036] refer to Figure 3 When the door of the switch cabinet 1 is opened, on the basis that the grounding switch 2 has been closed, the driving member 31 further moves to the left, and the crank 21 further rotates counterclockwise to the bottom dead point, where the bottom dead point means that the internal stress between the static joint 22 and the movable joint 23 of the grounding switch 2 can only make the crank 21 further rotate counterclockwise, but cannot make the crank 21 move clockwise, so that the static joint 22 and the movable joint 23 of the grounding switch 2 will not separate due to the internal stress between the two.

[0037] In the conventional earthing switch 2 of the switch cabinet 1, the static joint 22 and the dynamic joint 23 are connected by the elastic force of the spring 36. In the present embodiment, a similar design is also adopted, that is, the static joint 22 is elastic, or the static joint 22 is installed on an elastic platform, so that when the dynamic joint 23 applies a thrust to the static joint 22, the static joint 22 can generate a thrust that reacts on the dynamic joint 23. This thrust is the internal stress between the static joint 22 and the dynamic joint 23. Figure 3 The static joint 22 applies a horizontal rightward reaction force to the dynamic joint 23, so that the crank 21 has a counterclockwise rotation tendency instead of a clockwise rotation tendency.

[0038] Regarding the design of the transmission mechanism 3 and the power source 4, refer to Figure 4 and Figure 5 The power source 4 adopts a motor 41, and the output shaft of the motor 41 is coaxially connected to a polygonal column 411. The transmission mechanism 3 includes a threaded rod 32, and the threaded rod 32 can rotate and move axially inside the mounting groove 11. One end of the threaded rod 32 is provided with a polygonal hole 321 that is plugged into the polygonal column 411. The driving member 31 has a threaded hole, and the threaded hole of the driving member 31 is spirally connected to the threaded rod 32.

[0039] Since the driving member 31 is connected to the crank 21 through the first slide slot 311 , the driving member 31 cannot rotate. Therefore, when the motor 41 drives the polygonal column 411 to rotate, the threaded rod 32 engaged with the polygonal column 411 rotates accordingly, and the driving member 31 moves linearly along the axial direction of the threaded rod 32 .

[0040] Although the polygonal column 411 and the polygonal hole 321 are very easy to separate, it is difficult to reconnect them. If the polygonal column 411 and the polygonal hole 321 are not aligned, even if the operator closes the door of the switch cabinet 1, it is difficult for the transmission mechanism 3 and the power source 4 to be connected, and it is even difficult for the operator to close the door of the switch cabinet 1.

[0041] To solve this problem, refer to Figure 4 and Figure 5 The transmission mechanism 3 also includes a smooth rod 33, which is coaxially connected to the threaded rod 32. The connecting portion of the smooth rod 33 and the threaded rod 32 is fixedly connected to a first ring member 34. A second slide groove 331 is provided at a portion of the smooth rod 33 away from the threaded rod 32. The second slide groove 331 extends along the axial direction of the smooth rod 33. A second ring member 35 that can move along the second slide groove 331 is installed on the smooth rod 33. A spring 36 is mounted on the smooth rod 33, and both ends of the spring 36 respectively abut against the first ring member 34 and the second ring member 35.

[0042] The second annular member 35 is connected to the cabinet door of the switch cabinet 1 through a cam mechanism. When the cabinet door is opened, the cabinet door and the threaded rod 32 are rigidly connected. When the cabinet door is closed, the cabinet door and the threaded rod 32 are elastically connected.

[0043] The second sliding groove 331 is used for slidingly connecting the second annular member 35 and the polished rod 33 to avoid direct sliding connection between the second annular member 35 and the polished rod 33, thereby reducing the difficulty of maintenance.

[0044] Furthermore, the length of the second slide groove 331 is smaller than the length of the polished rod 33 , and the second slide groove 331 does not penetrate the polished rod 33 along the axial direction. The second slide groove 331 can limit the movement stroke of the second ring member 35 .

[0045] A fork 37 is provided on the outer side of the first ring member 34 and the second ring member 35. The fork 37 is connected to the cabinet door of the switch cabinet 1 through a cam mechanism. The fork 37 can move along the axial direction of the light rod 33, and the fork 37 contacts the first ring member 34 when it is away from the power source 4, and contacts the second ring member 35 when it is close to the power source 4.

[0046] Specifically, the shift fork 37 includes a main rod and two support rods. The main rod is transmission-connected to the cam mechanism, and the two support rods are fixedly connected to the main rod. The two support rods are respectively located on a side away from the first annular member 34 and the second annular member 35 .

[0047] When the cabinet door of the switch cabinet 1 is opened, the fork 37 drives the first annular member 34 to move, and the first annular member 34 drives the optical rod 33 and the threaded rod 32 away from the motor 41, so that the multi-prism 411 and the multi-sided hole 321 are separated.

[0048] When the cabinet door of the switch cabinet 1 is closed, the fork 37 drives the second annular member 35 to move, and the second annular member 35 drives the optical rod 33 and the threaded rod 32 close to the motor 41, so that the multi-prism 411 and the multi-sided hole 321 approach each other. If the multi-prism 411 and the multi-sided hole 321 are not aligned, the spring 36 is compressed. When the motor 41 is remotely operated and started, after driving the multi-prism 411 to rotate, the multi-prism 411 and the multi-sided hole 321 can be aligned and inserted.

[0049] The above embodiments are only exemplary embodiments of the present application and are not used to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements within the essence and protection scope of the present application, and such modifications or equivalent replacements should also be regarded as falling within the protection scope of the present application.

Claims

1. An electric operating device for a switch cabinet grounding switch, characterized in that: It comprises a transmission mechanism (3) and a power source (4) which are arranged inside a switch cabinet (1) and are used to operate a grounding switch (2); The grounding switch (2) comprises a static joint (22) and a dynamic joint (23), and the power source (4) is connected to the dynamic joint (23) via the transmission mechanism (3), so that the power source (4) can drive the dynamic joint (23) to contact or not contact the static joint (22); The switch cabinet (1) is provided with a mounting groove (11) inside, and the transmission mechanism (3) can be slidably mounted inside the mounting groove (11). The cabinet door of the switch cabinet (1) is provided with a cam mechanism that is transmission-connected to the transmission mechanism (3). When the cabinet door is opened, the cam mechanism drives the transmission mechanism (3) to slide inside the mounting groove (11). The transmission mechanism (3) can be connected or disconnected to the actuator of the power source (4) through its own sliding.

2. The electric operating device for the earthing switch of a switch cabinet according to claim 1, characterized in that: The movable joint (23) is installed at one end of a crank (21), the other end of the crank (21) is an operating end (212), the middle end of the crank (21) is connected to the switch cabinet (1) through a horizontal rotating shaft (211), the execution end of the transmission mechanism (3) is a driving member (31), and the driving member (31) is provided with a first sliding groove (311) extending in a vertical direction. The operating end (212) of the crank (21) can be slidably connected to the inside of the first sliding groove (311), so that when the driving member (31) moves linearly in different directions, the crank (21) rotates in different directions, thereby causing the static joint (22) and the movable joint (23) of the grounding switch (2) to contact or separate.

3. The electric operating device for the earthing switch of a switch cabinet according to claim 2, characterized in that: When the cabinet door of the switch cabinet (1) is closed and the movable joint (23) of the grounding switch (2) and the rotating shaft (211) of the crank (21) are located on the same horizontal plane, the static joint (22) and the movable joint (23) are in contact.

4. The electric operating device for the earthing switch of a switch cabinet according to claim 3, characterized in that: The static joint (22) is elastic, or the static joint (22) is connected to the switch cabinet (1) via an elastic platform. When the movable joint (23) and the static joint (22) are in contact, when the cabinet door of the switch cabinet (1) is opened, the crank (21) is further rotated, so that the movable joint (23) is rotated to the side of the rotating shaft (211) of the crank (21) away from its own operating end (212).

5. The electric operating device for the earthing switch of a switch cabinet according to claim 2, characterized in that: The power source (4) comprises a motor (41) and a polygonal column (411) coaxially mounted on an output shaft of the motor (41); the transmission mechanism (3) comprises a threaded rod (32); the threaded rod (32) is capable of rotating and axially moving inside the mounting groove (11); one end of the threaded rod (32) is provided with a polygonal hole (321) plug-matched with the polygonal column (411); the driving member (31) has a threaded hole; the threaded hole of the driving member (31) is spirally connected to the threaded rod (32).

6. The electric operating device for the earthing switch of a switch cabinet according to claim 5, characterized in that: The transmission mechanism (3) also includes a light rod (33), the light rod (33) is coaxially connected to the threaded rod (32), a first ring member (34) is fixedly connected to the connection portion between the light rod (33) and the threaded rod (32), a second ring member (35) that can move along its own axis is installed on the light rod (33), and a spring (36) is mounted on the light rod (33), and two ends of the spring (36) respectively abut against the first ring member (34) and the second ring member (35).

7. The electric operating device for the earthing switch of a switch cabinet according to claim 6, characterized in that: A second slide groove (331) is provided at a portion of the smooth rod (33) away from the threaded rod (32); the second slide groove (331) extends along the axial direction of the smooth rod (33); and the second annular member (35) is slidably connected to the second slide groove (331).

8. The electric operating device for the earthing switch of a switch cabinet according to claim 7, characterized in that: The length of the second slide groove (331) is smaller than the length of the polished rod (33), and the second slide groove (331) does not penetrate the polished rod (33) along the axial direction.

9. The electric operating device for the earthing switch of a switch cabinet according to claim 7, characterized in that: A shift fork (37) is arranged on the outer side of the first ring member (34) and the second ring member (35); the shift fork (37) is connected to the cabinet door of the switch cabinet (1) through the cam mechanism; the shift fork (37) can move along the axial direction of the light rod (33); and the shift fork (37) contacts the first ring member (34) when it is away from the power source (4); and contacts the second ring member (35) when it is close to the power source (4).

10. The electric operating device for the earthing switch of a switch cabinet according to claim 9, characterized in that: The shift fork (37) comprises a main rod and two support rods, the main rod is transmission-connected to the cam mechanism, the two support rods are fixedly connected to the main rod, and the two support rods are respectively located on a side of the first ring member (34) and the second ring member (35) that are away from each other.

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