Switching device

Abstract

The invention discloses a switch device. The switch device comprises a cabinet body, a horizontal partition plate and a position detection indicating device. The horizontal partition plate is arranged in the circuit breaker chamber, the circuit breaker can move on the upper surface of the horizontal partition plate, at least one through hole is formed in the horizontal partition plate, and the through holes are located in the moving path of the circuit breaker. The position detection indicating device is located on the lower surface of the horizontal partition. The position detection indicating device comprises a main mounting plate, at least one transmission assembly and an indicating board. The main mounting plate is fixedly mounted on the lower surface of the horizontal partition plate. The transmission assemblies are mounted on the main mounting plate, and at least part of each transmission assembly penetrates through one corresponding through hole. The indication board is connected with the transmission assembly, and when the circuit breaker passes through the through hole, the part, protruding out of the through hole, of the transmission assembly is pressed downwards to drive the indication board to move.

Description

Technical Field

[0001] This disclosure relates to the field of power equipment, and in particular to a switchgear. Background Technology

[0002] Switchgear is widely used in power distribution systems in power grids, mainly for switching, controlling and protecting power transmission and distribution.

[0003] Circuit breakers are the core components of switchgear, used to control the connection and disconnection of power. After entering the switchgear cabinet, the circuit breaker's position needs to be monitored or tested. Important positions include the test position and the operating position. In the test position, the moving and stationary contacts are not connected, but the control lines are connected. This position is used for fault simulation testing to verify that the circuit breaker operates normally in the closed and intermediate positions, ensuring that it responds correctly under normal conditions. In the operating position, the moving and stationary contacts are connected, allowing current to flow and ensuring the normal operation of the electrical equipment it supplies. The test and operating positions are crucial for the normal operation and maintenance of circuit breakers. With technological advancements, the accuracy requirements for monitoring these important positions are constantly increasing.

[0004] However, the switchgear is usually positioned by attaching a ruler to the movement path to determine the location of the circuit breaker. This method is not very accurate and often requires operators to have some experience to determine whether the circuit breaker has been moved to the correct position. Summary of the Invention

[0005] To address the problem of low accuracy in detecting the position of circuit breakers in related technologies, this disclosure provides a switching device.

[0006] This disclosure provides a switching device, including:

[0007] The cabinet has a circuit breaker compartment;

[0008] A horizontal partition is provided in the circuit breaker room. The circuit breaker is movable on the upper surface of the horizontal partition. At least one through hole is provided on the horizontal partition. The position of the through hole is set according to the electrical position reached by the circuit breaker. Each through hole is located on the moving path of the circuit breaker.

[0009] A position detection indicator is located on the lower surface of the horizontal partition, and the position detection indicator includes:

[0010] The main mounting plate is installed and fixed to the lower surface of the horizontal partition.

[0011] At least one transmission component is mounted on the main mounting plate, and the transmission component at least partially penetrates a corresponding through hole;

[0012] The indicator sign is connected to the transmission assembly. When the circuit breaker passes through the through hole, it presses down on the portion of the transmission assembly that protrudes from the through hole, causing the indicator sign to move.

[0013] In one embodiment, the horizontal partition has two through holes spaced at a predetermined distance, namely a first through hole and a second through hole, the predetermined distance being set according to the electrical position reached by the circuit breaker; the position detection indicator includes two transmission components, namely a first transmission component and a second transmission component;

[0014] The first transmission assembly includes:

[0015] A first cam, mounted on the main mounting plate and rotatable relative to the main mounting plate, allows the second cam to pass through a first through-hole in the horizontal partition and protrude from the upper surface of the horizontal partition; and

[0016] The first seesaw is installed on the main mounting plate, and its first end is located on the rotation path of the first cam. When the first cam rotates downward, the first end of the first seesaw is pressed down, causing the second end of the first seesaw to tilt up.

[0017] The second transmission assembly includes:

[0018] A second cam, mounted on the main mounting plate and rotatable relative to the main mounting plate, allows the second cam to pass through the first through-hole of the horizontal partition and protrude from the upper surface of the horizontal partition. The first and second cams are spaced apart and respectively set to correspond to the test position and operating position of the circuit breaker; and

[0019] The second seesaw is installed on the main mounting plate, and its first end is located on the rotation path of the second cam. When the second cam rotates downward, it presses down on the first end of the second seesaw, causing the second end of the second seesaw to tilt up.

[0020] The sign is connected to the second end of the first seesaw and the second end of the second seesaw, and can move with the movement of the second end of the first seesaw and the second end of the second seesaw.

[0021] In one embodiment, the system further includes a first micro switch and a second micro switch for electrical connection with the intelligent control module, the first micro switch and the second micro switch being mounted on opposite sides of the main mounting plate; wherein the first micro switch is disposed opposite to a first end of the first seesaw, and the second micro switch is disposed opposite to a first end of the second seesaw;

[0022] The first end of the first seesaw has an irregular cut. When the first cam rotates downward, it drives the first end of the first seesaw to move downward. The irregular cut of the first seesaw, in conjunction with the first micro switch, causes one end of the first seesaw to touch the first micro switch to generate a first position electrical signal, which is then sent to the intelligent control module.

[0023] The first end of the second seesaw has an irregular cut. When the second cam rotates downward, it drives the first end of the second seesaw to move downward. The irregular cut of the second seesaw, in conjunction with the second micro switch, causes one end of the second seesaw to touch the second micro switch to generate a second position electrical signal, which is then sent to the intelligent control module.

[0024] In one embodiment, the first end of the first seesaw forms a first arc-shaped surface at the irregular cut, and the shape of the first arc-shaped surface is adapted to the shape of the travel rod of the first micro switch;

[0025] The first end of the second seesaw forms a second arc-shaped surface at the irregular cut, and the shape of the second arc-shaped surface is adapted to the shape of the travel rod of the first micro switch.

[0026] In one embodiment, the first transmission assembly further includes:

[0027] A first reset shaft is mounted on the main mounting plate, and the first cam is mounted on the main mounting plate via the first reset shaft and is rotatable relative to the first reset shaft;

[0028] The first cotter pin passes through the top of the first reset shaft;

[0029] The first cam positioning shaft is mounted on the first cam and is parallel to the first reset shaft;

[0030] A first reset torsion spring is sleeved on the first reset shaft, with one end of the first reset torsion spring fixed to the first cotter pin and the other end located between the first reset shaft and the first cam positioning shaft. When the first cam rotates toward the first reset torsion spring, the first cam positioning shaft pushes the first reset torsion spring, causing the first reset torsion spring to compress.

[0031] The second transmission assembly also includes:

[0032] The second reset shaft is mounted on the main mounting plate, and the second cam is mounted on the main mounting plate via the second reset shaft and is rotatable relative to the second reset shaft;

[0033] The second cotter pin passes through the top of the second reset shaft;

[0034] The second cam positioning shaft is mounted on the second cam and is parallel to the second reset shaft;

[0035] The second reset torsion spring is sleeved on the second reset shaft, with one end of the second reset torsion spring fixed to the second cotter pin and the other end located between the second reset shaft and the second cam positioning shaft. When the second cam rotates toward the second reset torsion spring, the second cam positioning shaft pushes the second reset torsion spring, causing the second reset torsion spring to compress.

[0036] In one embodiment, the first transmission assembly further includes a first roller disposed on the first cam, the first roller making rolling contact with a first end of the first seesaw when the first cam rotates downward, and driving the first end of the first seesaw to move downward;

[0037] The second transmission assembly further includes a second roller disposed on the second cam. When the second cam rotates downward, the second roller makes rolling contact with the first end of the second seesaw and drives the first end of the second seesaw to move downward.

[0038] In one embodiment, the first seesaw is connected to the main mounting plate via a connector, the first seesaw forms a fulcrum via the connector, and the transmission lever ratio of the first end and the second end of the first seesaw is 1:1.

[0039] The second seesaw is connected to the main mounting plate via another connector, and the second seesaw forms another fulcrum via the other connector. The ratio of the transmission levers at the first end and the second end of the second seesaw is 1:2.

[0040] In one embodiment, it further includes:

[0041] The sign rail is fixedly installed on the side of the main mounting plate, and the sign can move up and down along the sign rail; the bottom of the sign rail has a lower limiting plate.

[0042] The indicator reset spring has one end connected to the lower limiting plate and the other end connected to the indicator.

[0043] In one embodiment, the sign includes:

[0044] The sign panel has a slot on its first surface that mates with the transmission assembly, and the two sides of the sign panel mate with the sign guide rail, allowing the sign panel to move up and down along the sign guide rail.

[0045] A hanging plate is disposed on the first surface of the indicator panel and connected to the other end of the indicator sign reset spring.

[0046] In one embodiment, the second surface of the sign panel is affixed with a label indicating the location.

[0047] In one embodiment, two transmission components are included, which are respectively disposed on both sides of the main mounting plate.

[0048] In one embodiment, the horizontal partition has a viewing window that is opposite to the area to be displayed on the sign.

[0049] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects:

[0050] This application provides a switchgear, which includes a cabinet, a horizontal partition, and a position detection indicator. The horizontal partition is disposed in a circuit breaker compartment, and the circuit breaker is movable on the upper surface of the horizontal partition. At least one through-hole is provided on the horizontal partition, and each through-hole is located on the movement path of the circuit breaker. The position detection indicator is located on the lower surface of the horizontal partition. The position detection indicator includes a main mounting plate, at least one transmission assembly, and an indicator plate. The main mounting plate is fixedly mounted to the lower surface of the horizontal partition. The transmission assembly is mounted on the main mounting plate, and at least partially penetrates a corresponding through-hole. The indicator plate is connected to the transmission assembly; when the circuit breaker passes through the through-hole, it presses down on the portion of the transmission assembly protruding from the through-hole, causing the indicator plate to move. Thus, when the circuit breaker moves on the horizontal partition, pressure is applied to the transmission components protruding from the partition, triggering the corresponding transmission components to move. These components then move the indicator plate. Since the position of the through-hole is set according to the circuit breaker's electrical position, when the circuit breaker moves the through-hole to the corresponding position, it triggers the corresponding transmission components to move the indicator plate a corresponding distance, placing the corresponding position information on the indicator plate in a position observable by the operator. This allows the operator to determine the circuit breaker's location simply by observing the position information on the indicator plate, eliminating the need for experience and improving the accuracy of position determination and detection. Furthermore, the indicator plate method described in this application is stable and unaffected by vibrations during the circuit breaker's transport or movement.

[0051] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit this disclosure. Attached Figure Description

[0052] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0053] Figure 1 This is a schematic diagram of the structure of a switchgear cabinet according to an exemplary embodiment.

[0054] Figure 2 This is a schematic diagram of the structure of a circuit breaker of a switching device according to an exemplary embodiment.

[0055] Figure 3 This is a schematic diagram of the structure of a horizontal partition of a switching device according to an exemplary embodiment.

[0056] Figures 4 to 6 This is a schematic diagram illustrating the structure of a switchgear whose indicator has not moved, according to an exemplary embodiment.

[0057] Figure 7 This is a schematic diagram illustrating the structure of an indicator and indicator rail for a switching device according to an exemplary embodiment.

[0058] Figure 8 This is a schematic diagram illustrating the structure of an indicator sign for a switching device according to an exemplary embodiment.

[0059] Figures 9 to 11 This is a schematic diagram illustrating the structure of a transmission component of a switching device, showing the movement of an indicator a first distance according to an exemplary embodiment.

[0060] Figures 12 to 14 This is a schematic diagram illustrating the structure of a transmission component of a switching device that moves an indicator a second distance, according to an exemplary embodiment.

[0061] Figure 15 This is a three-dimensional structural schematic diagram of a first transmission component of a switching device having a first roller, according to another exemplary embodiment.

[0062] Figure 16 This is a partial enlarged view of area A of the first transmission component according to another exemplary embodiment.

[0063] Figure 17 This is a side view of the first transmission assembly shown according to another exemplary embodiment.

[0064] Figure 18 This is a side view of the second transmission assembly having a second roller, as shown according to another exemplary embodiment. Detailed Implementation

[0065] To further illustrate the principles and structure of this disclosure, preferred embodiments of this disclosure will now be described in detail with reference to the accompanying drawings.

[0066] As mentioned above, in the relevant technical field, the position of the circuit breaker is usually indicated by attaching a ruler to the movement trajectory of the circuit breaker. However, operators often need to rely on certain experience to determine whether the circuit breaker has moved to the correct position, and this method of judgment has low accuracy.

[0067] Furthermore, because the distance from the bottom of the circuit breaker to the central partition in related technical fields is very small, generally only about 7mm, the sensor installed below the central partition can only be a short-stroke sensor. However, the effective stroke of the sensor is only within the range of 3-5mm. Once vibration occurs during transportation or operation, it is easy to cause the sensor to fail. Moreover, the position indication accuracy of this type of sensor is insufficient, with an error of about 10mm, which can easily cause the stud contact and stationary contact to not engage properly.

[0068] like Figure 1 and Figure 2 As shown, this application provides a switchgear 1, which is equipped with a position detection indicator 10. The detection indicator 10 is disposed below a horizontal partition 101 of the circuit breaker compartment. The horizontal partition 101 has at least one through hole 1011. The position of the through hole 1011 is set according to the position reached by the circuit breaker 102. For example, one through hole 1011 is provided for each of the test position and the working position reached by the circuit breaker 102, that is, the corresponding through hole 1011 is provided on the path where the circuit breaker 102 reaches the test position or the working position. Part of the structure of the detection indicator 10 protrudes through these through holes 1011 and onto the path of movement of the circuit breaker 102. When the circuit breaker 102 moves, pressure is applied to the part of the detection indicator 10 that protrudes from the path of the circuit breaker 102, causing the detection indicator 10 to activate and display or detect the current position of the circuit breaker 102. This allows the operator to read and know the current position of the circuit breaker 102 to determine whether to proceed with the next operation, or the intelligent control module to obtain the corresponding information and determine whether to proceed with the next action based on the collected information.

[0069] For details, please refer to [link / reference]. Figure 1 and Figure 2 This application provides a switchgear 1, which includes a cabinet 100 and multiple components located within the cabinet 100, such as a circuit breaker 102. The cabinet 100 is provided with multiple functional compartments, such as a circuit breaker compartment 102a, an operating compartment, or a cable compartment. The circuit breaker can be an armored withdrawable type, that is, the circuit breaker 102 can be moved or moved in and out of the circuit breaker compartment 102a.

[0070] like Figure 2 As shown, a horizontal partition 101 is provided at the bottom of the circuit breaker compartment 102a to separate the circuit breaker compartment 102a from the cable compartment. The circuit breaker 102 can move on the upper surface of the horizontal partition 101, for example, via a guide rail.

[0071] Combination Figure 3 As shown, the horizontal partition 101 includes a horizontal longitudinal portion 101a and a side portion 101b extending downward from the front end of the horizontal longitudinal portion 101a. The circuit breaker 102 moves along the longitudinal direction of the horizontal longitudinal portion 101a. The side portion 101b is parallel to the front door of the cabinet 100.

[0072] A viewing window 1012 is provided on the side 101b facing the front door, through which the label displayed on the indicator plate of the position detection indicator device 10 can be observed. This label can be a color label, a text label, or a color label with text. For example, the indicator plate has three sets of text labels: remove, test, and service, representing the three positions of the circuit breaker: the removed position, the test position, and the working position. If the operator sees the "test" label through the viewing window 1012, it indicates that the circuit breaker has reached the test position; if the operator sees the "service" label, it indicates that the circuit breaker has reached the working position; and if the operator sees the "remove" label, it indicates that the circuit breaker has not yet entered the circuit breaker compartment.

[0073] It should be noted that the front and back directions referred to in this application are based on the direction in which the cabinet is normally in use. For example, when the cabinet is normally in use, the direction in which the front door is located is defined as the front, and the direction in which the rear door is located is defined as the rear.

[0074] like Figure 4 As shown, a position detection indicator 10 is provided below the horizontal partition 101. The position detection indicator 10 includes a main mounting plate 11, at least one transmission assembly, and an indicator 14. The main mounting plate 11 includes a longitudinal portion 111 and a transverse mounting portion 112 perpendicular to the longitudinal portion 111. The longitudinal portion 111 extends in the front-rear direction, and the transverse mounting portion 112 is close to the lower surface of the horizontal partition 101 and is mounted on the lower surface of the horizontal partition 101 by fasteners such as screws or bolts. The transmission assembly is mounted on the main mounting plate 11. The transmission assembly at least partially corresponds to and passes through a through hole 1011. The indicator 14 is connected to the transmission assembly, and when the circuit breaker 102 passes through the through hole 101, it presses down on the portion of the transmission assembly protruding from the through hole 1011, causing the indicator 14 to move.

[0075] The transmission assembly can be configured as one or more, with the number of transmission assemblies corresponding to the number of detection position points. For example, two transmission assemblies can be configured, one for detecting the test position of the circuit breaker and the other for detecting the operating position of the circuit breaker.

[0076] In this embodiment, the application includes two transmission components, namely a first transmission component 12 and a second transmission component 13, which are used to detect the test position and working position of the circuit breaker, respectively.

[0077] Correspondingly, the horizontal partition 101 is provided with two through holes 1011, namely a first through hole 1011a and a second through hole 1011b. The first through hole 1011a and the second through hole 1011b are located on the path of the circuit breaker 102 and are spaced apart by a predetermined distance. This predetermined distance is set according to the electrical position reached by the circuit breaker 101 to ensure that when the circuit breaker 102 passes the position of the first through hole 1011a, the circuit breaker 102 reaches the test position, and when the circuit breaker 102 passes the position of the second through hole 1011b, the circuit breaker 102 reaches the working position.

[0078] like Figure 5 As shown, the first transmission assembly 12 includes a first cam 121 and a first seesaw 122. The first seesaw 122 is mounted to one side of the longitudinal portion 111 of the main mounting plate 11 by means of a connector such as bolts. The two ends of the first seesaw 122 are capable of swinging up and down relative to the fulcrum 1224 of the main mounting plate 11. The first cam 121 is located above the first end of the first seesaw 122 away from the indicator 14. When the first cam 121 rotates downward, it applies downward pressure to the first end of the first seesaw 122, causing the second end of the first seesaw 122 to tilt upward relative to the fulcrum 1224, thereby moving the indicator 14 upward.

[0079] The first cam 121 is mounted on the longitudinal portion 111 of the main mounting plate 11 via the first reset shaft 125. The first cam 121 can rotate relative to the first reset shaft 125 under external force. In the absence of external force, the first cam 121 protrudes from the upper surface of the horizontal partition 101 through the first through hole 1011a. Thus, when the circuit breaker 102 moves on the horizontal partition 101, it can press down on the first cam 121, applying downward pressure to it.

[0080] A first cotter pin 126 passes through the top of the first reset shaft 125. A first reset torsion spring 124 is sleeved on the first reset shaft 125 and located between the first cotter pin 126 and the first cam 121. A first cam positioning shaft 123 is mounted on the first cam 121 and is parallel to the first reset shaft 125. One end of the first reset torsion spring 124 is fixed to the first cotter pin 126, and the other end is located between the first reset shaft 125 and the first cam positioning shaft 123. The other end of the first reset torsion spring 124 extends from the first reset shaft 125 toward the first cam positioning shaft 123, and its height exceeds that of the first cam positioning shaft 123, forming a hook shape. When the first cam 121 rotates toward the first reset torsion spring 124 under the pressure of the circuit breaker 102, the first cam positioning shaft 123 pushes the first reset torsion spring 124, causing the first reset torsion spring 124 to compress toward the first seesaw 122.

[0081] When the first cam 121 is not under the pressure of the circuit breaker 102, the first reset torsion spring 124 resets, causing the first cam 121 to reverse and return to its original state.

[0082] The first micro switch 127 is mounted on the main mounting plate 11 and is located on the same side as the first seesaw 122. The first micro switch 127 is located on the path of the first end of the first seesaw 122 moving downwards. It is used to generate a first position electrical signal when the circuit breaker 102 reaches the test position and send it to the intelligent control module. The intelligent control module determines whether to perform the next action based on the first position signal.

[0083] The first end of the first seesaw 122 has an irregularly shaped cutout 1221, which faces the first micro switch 127. When the first cam 121 rotates downward, it causes the first end of the first seesaw 122 to move downward. The irregularly shaped cutout 1221 of the first seesaw 122, in conjunction with the first micro switch 127, causes one end of the first seesaw 122 to touch the first micro switch 127, generating a first position electrical signal. This first position signal is sent to the intelligent control module.

[0084] The first micro switch 127 has a cylindrical travel lever 1271. The first end of the first rocker 127 forms a first arcuate surface 1222 at the irregular cut 1221. The shape of the first arcuate surface 1222 matches the shape of the travel lever 1271 of the first micro switch 127. Thus, the first end of the first rocker 122 can accurately engage with the first micro switch 127, precisely controlling the triggering of the first micro switch 127. This ensures that the corresponding signal is accurately triggered when the circuit breaker reaches the test position.

[0085] The first micro switch 127 is fixed to the two mounting holes of the main mounting plate 11 by two fasteners. The two mounting holes are concentric, that is, the two mounting holes are located on the circumference of the same axis (i.e., fulcrum 1224). In this way, the position of the first micro switch 127 can be easily adjusted during installation and adjustment. At the same time, the first rocker 12 moves in a circle along the axis where the fulcrum 1224 is located, thus ensuring that it can accurately respond to the movement of the circuit breaker.

[0086] The first transmission assembly 12 and the second transmission assembly 13 are respectively disposed on opposite sides of the main mounting plate 11. Figure 6 As shown, the second transmission assembly 13 includes a second cam 131 and a second seesaw 132. The second seesaw 132 is mounted to the other side of the longitudinal portion 111 of the main mounting plate 11 by means of connectors such as bolts. The two ends of the second seesaw 132 are capable of swinging up and down relative to the fulcrum 1324 of the main mounting plate 11. The second cam 131 is located above the first end of the second seesaw 132 away from the indicator 14. When the second cam 131 rotates downward, it applies downward pressure to the first end of the second seesaw 132, causing the second end of the second seesaw 132 to tilt upward relative to the fulcrum 1324, thereby moving the indicator 14 upward.

[0087] The second cam 131 is mounted on the longitudinal portion 111 of the main mounting plate 11 via the second reset shaft 135. The second cam 131 can rotate relative to the second reset shaft 135 under external force. In the absence of external force, the second cam 131 protrudes from the upper surface of the horizontal partition 101 through the second through hole 1011b. Thus, when the circuit breaker 102 moves on the horizontal partition 101, it can press down on the second cam 131, applying downward pressure to it.

[0088] The second cotter pin 136 passes through the top of the second reset shaft 135. The second reset torsion spring 134 is sleeved on the second reset shaft 135 and is located between the second cotter pin 136 and the second cam 131. The second cam positioning shaft 133 is mounted on the second cam 131 and is parallel to the second reset shaft 135. One end of the second reset torsion spring 134 is fixed to the second cotter pin 136, and the other end is located between the second reset shaft 135 and the second cam positioning shaft 133. The other end of the second reset torsion spring 134 extends from the second reset shaft 135 toward the second cam positioning shaft 133, and its height exceeds the second cam positioning shaft 133, forming a hook shape. When the second cam 131 is rotated toward the second reset torsion spring 134 under the pressure of the circuit breaker 102, the second cam positioning shaft 133 pushes the second reset torsion spring 134, causing the second reset torsion spring 134 to compress toward the second seesaw 132.

[0089] When the second cam 131 is not under the pressure of the circuit breaker 102, the second reset torsion spring 134 resets, causing the second cam 131 to reverse and return to its original state.

[0090] The second micro switch 137 is mounted on the main mounting plate 11 and is located on the same side as the second seesaw 132. The second micro switch 137 is located on the path of the first end of the second seesaw 132 as it moves downward. It is used to generate a second position electrical signal when the circuit breaker 102 reaches the test position and send it to the intelligent control module. The intelligent control module determines whether to perform the next action based on the second position signal.

[0091] The first end of the second seesaw 132 has an irregularly shaped cutout 1321, which faces the second micro switch 137. When the second cam 131 rotates downward, it causes the first end of the second seesaw 132 to move downward. The irregularly shaped cutout 1321 of the second seesaw 132, in conjunction with the second micro switch 137, causes one end of the second seesaw 132 to touch the second micro switch 137, generating a second position electrical signal. This second position signal is sent to the intelligent control module.

[0092] The second micro switch 137 has a cylindrical travel lever 1371. The first end of the second rocker 137 forms a second arcuate surface 1322 at the irregular cut 1321. The shape of the second arcuate surface 1322 matches the shape of the travel lever 1371 of the second micro switch 127. Thus, the first end of the second rocker 132 can accurately engage with the second micro switch 137, precisely controlling the triggering of the second micro switch 137. This ensures that the corresponding signal is accurately triggered when the circuit breaker reaches the test position.

[0093] The second micro switch 137 is fixed to the two mounting holes of the main mounting plate 11 by two fasteners. The two mounting holes are concentric, that is, the two mounting holes are located on the circumference with the same axis as the center (i.e., fulcrum 1324). In this way, the position of the second micro switch 137 can be easily adjusted during installation and adjustment. At the same time, the second rocker 13 moves in a circle along the axis where the fulcrum 1324 is located, thus ensuring that it can accurately trigger the second micro switch to respond to the movement of the circuit breaker.

[0094] The second ends of the first seesaw 122 and the second seesaw 132 are connected to the indicator sign 14. When the first seesaw 122 and the second seesaw 132 tilt up or fall down, they cause the indicator sign 14 to move.

[0095] like Figure 6 and Figure 7As shown, the sign 14 includes a sign panel 141 and a hanging plate 142. The sign panel 141 has a first surface facing the first seesaw 122 and the second seesaw 132. A slot 143 is provided on this first surface to mate with the first seesaw 122 and the second seesaw 132. The slot 143 extends along the vertical direction of the sign panel 141. Figure 8 As shown, slot 143 can be formed by multiple plate-like structures extending from the first surface towards the seesaw direction. The second ends of the first seesaw 122 and the second seesaw 132 can be inserted into the corresponding slot 143 from bottom to top. The number of slots 143 depends on the number of seesaws. In this embodiment, there are two seesaws, corresponding to two slots 143. The second surface of the sign panel 141 has a label 144 facing the front door of the cabinet. The label 144 is divided into three segments, each segment corresponding to a text and / or color label for indicating different positions. For example, these three segments correspond to the working position, the test position, and the removed position. The viewing window 1012 of the horizontal partition 101 is opposite to the area to be displayed on the sign 14, that is, the label segment in the area to be displayed can be observed through the viewing window 1012 of the horizontal partition 101. In other words, as the sign panel 141 moves, different labels can be seen through the viewing window 1012. This makes it convenient for staff to observe the position information on the labels.

[0096] like Figure 6 and Figure 7 As shown, a sign guide rail 15 is provided on the side 101b of the horizontal partition 101. The signs 14 can move up and down along the sign guide rail 15 on both sides. The bottom of the sign guide rail 15 has a lower limiting plate 151. One end of the sign reset spring 16 is connected to the lower limiting plate 151, and the other end is connected to the sign 14. When the sign 14 moves upward under the action of the first seesaw 122 and the second tilting plate 123 (or the first seesaw), the sign reset spring 16 is stretched. When the first seesaw 122 and the second tilting plate 123 lose external force, the sign reset spring 16 resets, pulling the first seesaw 122 and the second tilting plate 123 back to their original positions.

[0097] A reset spring 16 is installed on the indicator 14 for resetting the indicator 14. A first reset torsion spring 124 and a second reset torsion spring 134 are correspondingly provided on the first cam 121 and the second cam 131. The tops of both the first reset shaft 125 and the second reset shaft 135 are provided with angled through holes, and the first cotter pin 126 and the second cotter pin 136 are each fixed to their respective reset shafts through the corresponding angled through holes. The first cotter pin 126 and the second cotter pin 136 drive their respective torsion springs to rotate. This ensures the preload of the torsion springs, and allows the indicator 14 to quickly return to its original position when the first cam and the second cam are not subjected to external force. Furthermore, the rear end of the reset shaft with an angled groove mates with an angled groove hole on the main mounting plate 11, thus ensuring welding accuracy.

[0098] like Figures 9 to 11 As shown, when the circuit breaker 102 reaches the test position, the circuit breaker 102 presses down the first cam 121, causing the first cam 121 to rotate downwards, which in turn moves the first end of the first seesaw 122 downwards and touches the micro switch 127. The second end of the first seesaw 122 tilts upwards, causing the indicator 14 to move upwards by a first distance d1. At this time, before the circuit breaker 102 reaches the position of the second cam 131, the first cam 131 does not rotate, and the second micro switch 137 is not triggered. At this time, the second section 144b of the label 144 can be observed through the inspection port 1012. The second section 144b can display text, such as "test" (test position).

[0099] like Figures 12 to 14 As shown, when circuit breaker 102 reaches the working position, circuit breaker 102 simultaneously presses down the first cam 121 and the second cam 131. The first cam 121 rotates downward, causing the first end of the first rocker 122 to move downward and touch the first micro switch 127. The second cam 131 rotates downward, causing the first end of the second rocker 132 to move downward and touch the second micro switch 137. The second ends of the first rocker 122 and the second rocker 132 tilt upward, causing the indicator 14 to move upward a second distance d2. At this time, the third segment 144c of the label 144 can be observed through the inspection port 1012. The third segment 144c can display text, such as "service" (working position).

[0100] The distance the indicator 14 moves can be achieved by adjusting the lever ratio of the seesaw. For example, the lever ratio of the first seesaw 122 is 1:1, meaning the distance between the first end and the second end of the first seesaw 122 relative to the fulcrum 1224 is 1:1. Thus, if the first end of the first seesaw 12 moves downwards by 1 cm, then the second end of the first seesaw 12 will tilt upwards by 1 cm. The lever ratio of the second seesaw 132 is 1:2, meaning the distance between the first end and the second end of the second seesaw 132 relative to the fulcrum 1324 is 1:2. That is, if the first end of the second seesaw 13 moves downwards by 1 cm, then the second end of the second seesaw 13 will tilt upwards by 2 cm. Thus, even when the second seesaw 13 needs to travel a certain distance in the slot 143, the required distance the indicator 14 needs to move is still met.

[0101] like Figure 6 As shown, when the circuit breaker 102 is not in the circuit breaker compartment, neither the first cam 121 nor the second cam 131 moves, and the indicator 14 does not move. At this time, the first section 144a of the label 144 can be observed through the inspection port 1012. Text, such as "remove," can be displayed on the first section 144a.

[0102] In some embodiments, such as Figures 15 to 17 As shown, a first roller 128 may also be provided on the first cam 121 to reduce the contact friction between the first cam 121 and the first seesaw 122. The first roller 128 is mounted on the end of the first cam 121 near the first seesaw 122 via a mounting shaft. When the first cam 121 rotates downward, the first roller 128 makes rolling contact with the first end of the first seesaw 122, causing the first end of the first seesaw 122 to move downward.

[0103] Similarly, such as Figure 18 As shown, a second roller 138 may also be provided on the second cam 131 to reduce the contact friction between the second cam 131 and the second seesaw 132. The second roller 138 is mounted on the end of the second cam 131 near the second seesaw 132 via a mounting shaft. When the second cam 131 rotates downward, the second roller 138 makes rolling contact with the first end of the second seesaw 132, causing the first end of the second seesaw 132 to move downward.

[0104] In summary, as described above, the transmission assembly of this application is equipped with corresponding protruding parts, such as a first cam and a second cam, according to the different positions of the circuit breaker. When the circuit breaker reaches different positions, the circuit breaker applies pressure to different protruding parts, thereby causing the indicator to move different distances, so that different positions of the indicator can be observed, achieving differentiated indication of different positions. Furthermore, the transmission assembly drives the indicator, and the indicator displays the corresponding position information, achieving precise indication of the circuit breaker position.

[0105] Furthermore, the detection method described in this application can also be applied to intelligent switching equipment. By touching a micro switch via a seesaw, the relevant position information of the circuit breaker is sent to the intelligent control module. Since the micro switch is mounted on the main mounting plate, there is ample installation space. The micro switch is not limited by its size and stroke, and a large-stroke micro switch can be selected, thereby improving the effectiveness of detection and the accuracy of position detection.

[0106] The above are merely preferred embodiments of this disclosure and are not intended to limit the scope of protection of this disclosure. All equivalent structural changes made based on the description and drawings of this disclosure are included within the scope of protection of this disclosure.

Claims

1. A switching device, characterized in that, include: The cabinet has a circuit breaker compartment; A horizontal partition is provided in the circuit breaker room. The circuit breaker is movable on the upper surface of the horizontal partition. At least one through hole is provided on the horizontal partition. The position of the through hole is set according to the electrical position reached by the circuit breaker. Each through hole is located on the moving path of the circuit breaker. A position detection indicator is located on the lower surface of the horizontal partition, and the position detection indicator includes: The main mounting plate is installed and fixed to the lower surface of the horizontal partition. At least one transmission component is mounted on the main mounting plate, and the transmission component at least partially penetrates a corresponding through hole; The indicator sign is connected to the transmission assembly. When the circuit breaker passes through the through hole, it presses down on the portion of the transmission assembly that protrudes from the through hole, causing the indicator sign to move.

2. The switching device according to claim 1, characterized in that, The horizontal partition has two through holes spaced at a predetermined distance, namely a first through hole and a second through hole, the predetermined distance being set according to the electrical position reached by the circuit breaker; the position detection and indication device includes two transmission components, namely a first transmission component and a second transmission component; The first transmission assembly includes: A first cam, mounted on the main mounting plate and rotatable relative to the main mounting plate, allows the first cam to pass through a first through-hole in the horizontal partition and protrude from the upper surface of the horizontal partition; and The first seesaw is installed on the main mounting plate, and its first end is located on the rotation path of the first cam. When the first cam rotates downward, the first end of the first seesaw is pressed down, causing the second end of the first seesaw to tilt up. The second transmission assembly includes: A second cam, mounted on the main mounting plate and rotatable relative to the main mounting plate, allows the second cam to pass through the first through-hole of the horizontal partition and protrude from the upper surface of the horizontal partition. The first and second cams are spaced apart and respectively set to correspond to the test position and operating position of the circuit breaker; and The second seesaw is installed on the main mounting plate, and its first end is located on the rotation path of the second cam. When the second cam rotates downward, it presses down on the first end of the second seesaw, causing the second end of the second seesaw to tilt up. The sign is connected to the second end of the first seesaw and the second end of the second seesaw, and can move with the movement of the second end of the first seesaw and the second end of the second seesaw.

3. The switching device according to claim 2, characterized in that, It also includes a first micro switch and a second micro switch for electrical connection with the intelligent control module, the first micro switch and the second micro switch being mounted on opposite sides of the main mounting plate; wherein, the first micro switch is disposed opposite to the first end of the first seesaw, and the second micro switch is disposed opposite to the first end of the second seesaw; The first end of the first seesaw has an irregular cut. When the first cam rotates downward, it drives the first end of the first seesaw to move downward. The irregular cut of the first seesaw, in conjunction with the first micro switch, causes one end of the first seesaw to touch the first micro switch to generate a first position electrical signal, which is then sent to the intelligent control module. The first end of the second seesaw has an irregular cut. When the second cam rotates downward, it drives the first end of the second seesaw to move downward. The irregular cut of the second seesaw, in conjunction with the second micro switch, causes one end of the second seesaw to touch the second micro switch to generate a second position electrical signal, which is then sent to the intelligent control module.

4. The switching device according to claim 3, characterized in that, The first end of the first seesaw forms a first arc-shaped surface at the irregular cut, and the shape of the first arc-shaped surface is adapted to the shape of the travel rod of the first micro switch; The first end of the second seesaw forms a second arc-shaped surface at the irregular cut, and the shape of the second arc-shaped surface is adapted to the shape of the travel rod of the first micro switch.

5. The switching device according to claim 2, characterized in that, The first transmission assembly further includes: A first reset shaft is mounted on the main mounting plate, and the first cam is mounted on the main mounting plate via the first reset shaft and is rotatable relative to the first reset shaft; The first cotter pin passes through the top of the first reset shaft; The first cam positioning shaft is mounted on the first cam and is parallel to the first reset shaft; A first reset torsion spring is sleeved on the first reset shaft, with one end of the first reset torsion spring fixed to the first cotter pin and the other end located between the first reset shaft and the first cam positioning shaft. When the first cam rotates toward the first reset torsion spring, the first cam positioning shaft pushes the first reset torsion spring, causing the first reset torsion spring to compress. The second transmission assembly also includes: The second reset shaft is mounted on the main mounting plate, and the second cam is mounted on the main mounting plate via the second reset shaft and is rotatable relative to the second reset shaft; The second cotter pin passes through the top of the second reset shaft; The second cam positioning shaft is mounted on the second cam and is parallel to the second reset shaft; The second reset torsion spring is sleeved on the second reset shaft, with one end of the second reset torsion spring fixed to the second cotter pin and the other end located between the second reset shaft and the second cam positioning shaft. When the second cam rotates toward the second reset torsion spring, the second cam positioning shaft pushes the second reset torsion spring, causing the second reset torsion spring to compress.

6. The switching device according to claim 2, characterized in that, The first transmission assembly further includes a first roller disposed on the first cam, the first roller making rolling contact with the first end of the first seesaw when the first cam rotates downward, and driving the first end of the first seesaw to move downward; The second transmission assembly further includes a second roller disposed on the second cam. When the second cam rotates downward, the second roller makes rolling contact with the first end of the second seesaw and drives the first end of the second seesaw to move downward.

7. The switching device according to claim 2, characterized in that, The first seesaw is connected to the main mounting plate via a connector, and the first seesaw forms a fulcrum through the connector. The ratio of the transmission levers at the first end and the second end of the first seesaw is 1:

1. The second seesaw is connected to the main mounting plate via another connector, and the second seesaw forms another fulcrum via the other connector. The ratio of the transmission levers at the first end and the second end of the second seesaw is 1:

2.

8. The switching device according to any one of claims 1 to 7, characterized in that, Also includes: The sign rail is fixedly installed on the side of the main mounting plate, and the sign can move up and down along the sign rail; the bottom of the sign rail has a lower limiting plate. The indicator reset spring has one end connected to the lower limiting plate and the other end connected to the indicator.

9. The switching device according to claim 8, characterized in that, The signage includes: The sign panel has a slot on its first surface that mates with the transmission assembly, and the two sides of the sign panel mate with the sign guide rail, allowing the sign panel to move up and down along the sign guide rail. A hanging plate is disposed on the first surface of the indicator panel and connected to the other end of the indicator sign reset spring.

10. The switching device according to claim 9, characterized in that, The second surface of the sign panel has a label indicating the location.

11. The switching device according to claim 1, characterized in that, It includes two transmission components, which are respectively disposed on both sides of the main mounting plate.

12. The switching device according to claim 1, characterized in that, The horizontal partition has a viewing window, which is opposite to the area to be displayed on the sign.

Images