Circuit breaker position confirmation device of electric circuit breaker handcart

Abstract

The utility model discloses a circuit breaker position confirmation device of an electric circuit breaker handcart. The circuit breaker position confirmation device is characterized by comprising a vertical plate, a first contact switch, a second contact switch, a first trigger linkage mechanism and a second trigger linkage mechanism, the vertical plate is provided with a working station where the circuit breaker reaches the working position and an overhauling station where the circuit breaker reaches the overhauling position, the working station and the overhauling station are located on the same horizontal plane, and the working station is located on the inner side of the overhauling station; the first contact switch is installed on the vertical plate and located on a working station, the fixed end of the first trigger linkage mechanism is installed on the vertical plate in a hinged mode, and the movable end of the first trigger linkage mechanism is located below the first contact switch and correspondingly matched with the first contact switch; the second contact switch is installed on the vertical plate and located on the maintenance station, the fixed end of the second trigger linkage mechanism is installed on the vertical plate in a hinged mode, and the movable end of the second trigger linkage mechanism is located below the second contact switch and correspondingly matched with the second contact switch.

Description

Technical Field

[0001] The utility model relates to circuit breaker equipment, in particular to a circuit breaker position confirmation device of an electric circuit breaker trolley. Background Art

[0002] KYN27 armored removable AC metal-enclosed switchgear (KYN cabinet for short) plays an important role in the power system and is widely used in substations. Like other products, KYN cabinets are constantly improving their functions in practice to meet user requirements. In recent years, from the perspective of operator safety and improving operating efficiency, users have increasingly demanded the use of electric-operated circuit breaker trolleys to push and push out of KYN cabinets, prompting manufacturers to further improve the functions of KYN cabinets and configure electric chassis vehicles in newly designed KYN cabinets to meet user requirements. However, there are still a large number of traditional KYN cabinets in operation, which require dedicated personnel to use special operating handles to push the circuit breaker trolley to the working position or push it out to the maintenance position.

[0003] In the traditional manual operation mode, the operator confirms whether the circuit breaker is in the working position or the maintenance position through the observation window on the door panel of the circuit breaker room. If the circuit breaker trolley is later changed to electric control to push and push, it will be impossible to confirm the position of the circuit breaker during remote operation. In order to confirm the position of the circuit breaker during remote operation, it is necessary to drill holes in the cabinet to install travel switches, but it is difficult to ensure the accuracy of the drilling, making it difficult to adjust the coordination between the circuit breaker and the travel switch on the circuit breaker trolley, and assembly is difficult. When there is a deviation in the coordination between the circuit breaker and the travel switch, the entire circuit breaker trolley must be pulled out of the cabinet to adjust the position of the travel switch. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a circuit breaker position confirmation device for an electric circuit breaker trolley, which can accurately confirm the working position or maintenance position of the circuit breaker, and is convenient for operators to remotely control.

[0005] In order to solve the above technical problems, the technical solutions adopted by the utility model are as follows:

[0006] A circuit breaker position confirmation device for an electric circuit breaker trolley, characterized in that it includes a vertical plate, a first contact switch, a second contact switch, a first trigger linkage mechanism and a second trigger linkage mechanism; the vertical plate is provided with a working station where the circuit breaker has reached the working position and a maintenance station where the circuit breaker has reached the maintenance position, the working station and the maintenance station are on the same horizontal plane, and the working station is on the inner side of the maintenance station; the first contact switch is mounted on the vertical plate and is located on the working station, the fixed end of the first trigger linkage mechanism is hingedly mounted on the vertical plate, the movable end of the first trigger linkage mechanism is located below the first contact switch and corresponds to the first contact switch; the second contact switch is mounted on the vertical plate and is located on the maintenance station, the fixed end of the second trigger linkage mechanism is hingedly mounted on the vertical plate, and the movable end of the second trigger linkage mechanism is located below the second contact switch and corresponds to the second contact switch.

[0007] The circuit breaker position confirmation device is installed on the inner wall of the cabinet as an integral component. The cabinet is provided with a controller and an inner cavity capable of moving the electric circuit breaker trolley. The definitions of the inside and outside refer to: based on the inner cavity of the cabinet, the side close to the inner cavity of the cabinet is the inside, and the side away from the inner cavity of the cabinet is the outside. Usually, the first contact switch and the second contact switch are electrically connected to the control input end of the controller, and the travel control end of the electric circuit breaker trolley is electrically connected to the control output end of the controller. The top of the electric circuit breaker trolley is below the first trigger linkage mechanism and the second trigger linkage mechanism, and during the movement of the electric circuit breaker trolley, the top of the electric circuit breaker trolley can contact and cooperate with the movable end of the first trigger linkage mechanism and the movable end of the second trigger linkage mechanism. When the top of the electric circuit breaker trolley is not at the working station or the maintenance station, the movable end of the first trigger linkage mechanism is disengaged from the first contact switch, or the movable end of the second trigger linkage mechanism is disengaged from the second contact switch.

[0008] When the electric circuit breaker trolley is to be pushed to the working station, the electric circuit breaker trolley is moved inward, the top of the electric circuit breaker trolley contacts and cooperates with the active end of the first trigger linkage mechanism, so that the active end of the first trigger linkage mechanism swings upward, and then the active end of the first trigger linkage mechanism triggers the first contact switch, and the first contact switch sends a trigger signal to the controller, and the controller controls the electric circuit breaker trolley to stop moving, that is, the circuit breaker of the electric circuit breaker trolley has accurately reached the working position. When the electric circuit breaker trolley is to be pushed out to the maintenance station, the electric circuit breaker trolley is moved outward, the top of the electric circuit breaker trolley contacts and cooperates with the active end of the second trigger linkage mechanism, so that the active end of the second trigger linkage mechanism swings upward, and then the active end of the second trigger linkage mechanism triggers the second contact switch, and the second contact switch sends a trigger signal to the controller, and the controller controls the electric circuit breaker trolley to stop moving, that is, the circuit breaker of the electric circuit breaker trolley has accurately reached the maintenance position.

[0009] In the preferred embodiment, a horizontally arranged limit bar is provided on the vertical plate, and the limit bar is arranged between the working station and the maintenance station, and the fixed end of the first trigger linkage mechanism and the fixed end of the second trigger linkage mechanism are both above the limit bar, the middle part of the first trigger linkage mechanism is hooked and matched with the inner end of the limit bar, and the middle part of the second trigger linkage mechanism is hooked and matched with the outer end of the limit bar; the top of the electric circuit breaker trolley is below the limit bar. Since the fixed ends of the first trigger linkage mechanism and the second trigger linkage mechanism are both hingedly mounted on the vertical plate, the movable ends of the first trigger linkage mechanism and the second trigger linkage mechanism will rotate around their hinge points, so by arranging the limit bar below the fixed ends of the first trigger linkage mechanism and the second trigger linkage mechanism, the inner and outer ends of the limit bar are used to limit the rotation range of the first trigger linkage mechanism and the second trigger linkage mechanism, so as to avoid the first trigger linkage mechanism and the second trigger linkage mechanism directly hanging on the vertical plate due to gravity and blocking the movement of the electric circuit breaker trolley.

[0010] In the preferred embodiment, the first trigger linkage mechanism and the second trigger linkage mechanism both include a swing arm and a rolling element. The fixed end of the swing arm is hingedly mounted on the vertical plate, and the rolling element is rotatably mounted on the movable end of the swing arm, and the landing point of the rolling element is below the lower edge of the swing arm, and the rolling element corresponds to the top of the electric circuit breaker trolley. The lower ends of the first contact switch and the second contact switch are both provided with a trigger column that can be extended up and down, and the lower end of the trigger column corresponds to the upper surface of the movable end of the swing arm. When the circuit breaker of the electric circuit breaker trolley reaches the working position or the maintenance position, the above-mentioned rolling element contacts and cooperates with the top of the electric circuit breaker trolley, so that the movable end of the swing arm swings upward, and then the upper surface of the movable end of the swing arm pushes up the trigger column at the lower end of the first contact switch or the second contact switch, and the trigger column shrinks upward, thereby triggering the first contact switch or the second contact switch.

[0011] In a further preferred embodiment, a support plate is further included, which is horizontally mounted on one side of the top of the electric circuit breaker trolley, and the upper surface of the support plate is in contact with the rolling element. Arranging the support plate on one side of the top of the electric circuit breaker trolley helps the horizontally mounted support plate to better cooperate with the rolling elements of the first trigger linkage mechanism and the second trigger linkage mechanism.

[0012] In a further preferred embodiment, a first inclined surface which gradually slopes downward from the outside to the inside is provided on the inner edge of the support plate, and a second inclined surface which gradually slopes downward from the inside to the outside is provided on the outer edge of the support plate. When the electric circuit breaker trolley is pushed inward or outward, the first inclined surface and the second inclined surface play a guiding role, which helps to guide the rolling element from the first inclined surface or the second inclined surface to the upper surface of the support plate, or to make the rolling element roll down from the upper surface of the support plate along the first inclined surface or the second inclined surface.

[0013] In a further preferred embodiment, the support plate can be lifted and installed on one side of the top of the electric circuit breaker trolley; a mounting plate is connected to one side of the support plate, the mounting plate is perpendicular to the support plate, a plurality of first through holes are arranged on the mounting plate, bolts are installed in the first through holes, the rod of the bolt has a nut, a second through hole corresponding to any of the first through holes is arranged on the side wall of the electric circuit breaker trolley, the rod of the bolt passes through the first through hole and the second through hole in sequence, and the head of the bolt and the nut jointly clamp the mounting plate and the side wall of the electric circuit breaker trolley. The mounting plate is locked on the side wall of the electric circuit breaker trolley by the locking fit of the bolt and the nut, and the second through hole is adjusted to correspond to any of the first through holes arranged above and below, so as to realize that the support plate can be lifted and installed on the top of the electric circuit breaker trolley, so that the support plate can better cooperate and contact with the rolling parts of the first trigger linkage mechanism and the second trigger linkage mechanism. Through this arrangement, the height of the support plate can be adjusted in the cabinet without pushing the entire electric circuit breaker trolley out of the cabinet.

[0014] In a further preferred embodiment, the rolling element is a ball bearing or a roller, and the ball bearing or the roller is mounted on the movable end of the swing arm through a pin.

[0015] Compared with the prior art, the utility model has the following advantages:

[0016] The utility model adopts the method of two pairs of contact switches and trigger linkage mechanisms to cooperate with each other to accurately confirm the working position or maintenance position of the circuit breaker, which has higher reliability and does not require complicated installation and debugging processes. It is convenient for operators to remotely control the advancement and withdrawal of electric circuit breaker trolleys, shortening the time for adjusting equipment. The utility model is suitable for the production of intelligent KYN cabinets and the electrification transformation of KYN cabinets. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a specific embodiment of the utility model;

[0018] Figure 2 yes Figure 1 Structural diagram of the circuit breaker in the working position;

[0019] Figure 3 yes Figure 1 Structural diagram of the circuit breaker in the middle position;

[0020] Figure 4 yes Figure 1 Structural diagram of the circuit breaker at the maintenance station. DETAILED DESCRIPTION

[0021] The following is a further description of the preferred embodiments of the present invention in conjunction with the accompanying drawings.

[0022] like Figure 1-4 As shown, the circuit breaker position confirmation device of the electric circuit breaker trolley in this embodiment includes a vertical plate 1, a first contact switch 2, a second contact switch 3, a first trigger linkage mechanism 4 and a second trigger linkage mechanism 5; the vertical plate 1 is provided with a working station 11 where the circuit breaker 6 has reached the working position and a maintenance station 12 where the circuit breaker 6 has reached the maintenance position, the working station 11 and the maintenance station 12 are on the same horizontal plane, and the working station 11 is on the inner side of the maintenance station 12; the first contact switch 2 is installed on the vertical plate 1 and is located on the working station 11, the fixed end of the first trigger linkage mechanism 4 is hingedly installed on the vertical plate 1, and the movable end of the first trigger linkage mechanism 4 is located below the first contact switch 2 and corresponds to the first contact switch 2; the second contact switch 3 is installed on the vertical plate 1 and is located on the maintenance station 12, the fixed end of the second trigger linkage mechanism 5 is hingedly installed on the vertical plate 1, and the movable end of the second trigger linkage mechanism 5 is located below the second contact switch 3 and corresponds to the second contact switch 3.

[0023] The circuit breaker position confirmation device is installed on the inner wall of the cabinet as an integral component. The cabinet is provided with a controller and an inner cavity capable of moving the electric circuit breaker trolley 7. The definition of the inside and outside refers to: based on the inner cavity of the cabinet, the side close to the inner cavity of the cabinet is the inside, and the side away from the inner cavity of the cabinet is the outside. Usually, the first contact switch 2 and the second contact switch 3 are electrically connected to the control input end of the controller, and the travel control end of the electric circuit breaker trolley 7 is electrically connected to the control output end of the controller. The top of the electric circuit breaker trolley 7 is below the first trigger linkage mechanism 4 and the second trigger linkage mechanism 5, and during the movement of the electric circuit breaker trolley 7, the top of the electric circuit breaker trolley 7 can contact and cooperate with the movable end of the first trigger linkage mechanism 4 and the movable end of the second trigger linkage mechanism 5. When the top of the electric circuit breaker trolley 7 is not on the working station 11 or the maintenance station 12, the movable end of the first trigger linkage mechanism 4 is disengaged from the first contact switch 2, or the movable end of the second trigger linkage mechanism 5 is disengaged from the second contact switch 3.

[0024] When the electric circuit breaker trolley 7 is to be pushed to the working station 11, the electric circuit breaker trolley 7 is moved inward, the top of the electric circuit breaker trolley 7 contacts and cooperates with the movable end of the first trigger linkage mechanism 4, so that the movable end of the first trigger linkage mechanism 4 swings upward, and then the movable end of the first trigger linkage mechanism 4 triggers the first contact switch 2, and the first contact switch 2 sends a trigger signal to the controller, and the controller controls the electric circuit breaker trolley 7 to stop moving, that is, the circuit breaker 6 of the electric circuit breaker trolley 7 has accurately reached the working position. When the electric circuit breaker trolley 7 is to be pushed out to the maintenance station 12, the electric circuit breaker trolley 7 is moved outward, the top of the electric circuit breaker trolley 7 contacts and cooperates with the movable end of the second trigger linkage mechanism 5, so that the movable end of the second trigger linkage mechanism 5 swings upward, and then the movable end of the second trigger linkage mechanism 5 triggers the second contact switch 3, and the second contact switch 3 sends a trigger signal to the controller, and the controller controls the electric circuit breaker trolley 7 to stop moving, that is, the circuit breaker 6 of the electric circuit breaker trolley 7 has accurately reached the maintenance position.

[0025] A horizontally arranged limit bar 13 is provided on the vertical plate 1, and the limit bar 13 is arranged between the working station 11 and the maintenance station 12, and the fixed end of the first trigger linkage mechanism 4 and the fixed end of the second trigger linkage mechanism 5 are both located above the limit bar 13, the middle part of the first trigger linkage mechanism 4 is engaged with the inner end of the limit bar 13, and the middle part of the second trigger linkage mechanism 5 is engaged with the outer end of the limit bar 13; the top of the electric circuit breaker trolley 7 is located below the limit bar 13. Since the fixed ends of the first trigger linkage mechanism 4 and the second trigger linkage mechanism 5 are both hingedly mounted on the vertical plate 1, the movable ends of the first trigger linkage mechanism 4 and the second trigger linkage mechanism 5 will rotate around their hinge points. Therefore, a limit bar 13 is provided below the fixed ends of the first trigger linkage mechanism 4 and the second trigger linkage mechanism 5, and the inner and outer ends of the limit bar 13 are used to limit the rotation amplitude of the first trigger linkage mechanism 4 and the second trigger linkage mechanism 5, so as to prevent the first trigger linkage mechanism 4 and the second trigger linkage mechanism 5 from directly hanging down on the vertical plate 1 due to gravity and blocking the movement of the electric circuit breaker trolley 7.

[0026] The first trigger linkage mechanism 4 and the second trigger linkage mechanism 5 both include a swing arm 41 and a rolling member 42. The fixed end of the swing arm 41 is hingedly mounted on the vertical plate 1. The rolling member 42 is rotatably mounted on the movable end of the swing arm 41. The landing point of the rolling member 42 is below the lower edge of the swing arm 41. The rolling member 42 is matched with the top of the electric circuit breaker trolley 7. The lower ends of the first contact switch 2 and the second contact switch 3 are both provided with a trigger column 21 that can be extended up and down. The lower end of the trigger column 21 is matched with the upper surface of the movable end of the swing arm 41. When the circuit breaker 6 of the electric circuit breaker trolley 7 reaches the working position or the maintenance position, the rolling member 42 contacts and cooperates with the top of the electric circuit breaker trolley 7, so that the movable end of the swing arm 41 swings upward, and then the upper surface of the movable end of the swing arm 41 pushes up the trigger column 21 at the lower end of the first contact switch 2 or the second contact switch 3. The trigger column 21 shrinks upward, thereby triggering the first contact switch 2 or the second contact switch 3.

[0027] This embodiment further includes a support plate 8, which is horizontally mounted on one side of the top of the electric circuit breaker trolley 7, and the upper surface of the support plate 8 is in contact with the rolling element 42. The support plate 8 is arranged on one side of the top of the electric circuit breaker trolley 7, which helps the horizontally arranged support plate 8 to better contact with the rolling elements 42 of the first trigger linkage mechanism 4 and the second trigger linkage mechanism 5.

[0028] A first inclined surface 81 which gradually slopes downward from the outside to the inside is provided on the inner edge of the support plate 8, and a second inclined surface 82 which gradually slopes downward from the inside to the outside is provided on the outer edge of the support plate 8. When the electric circuit breaker trolley 7 is pushed inward or outward, the first inclined surface 81 and the second inclined surface 82 play a guiding role, which helps to guide the rolling element 42 from the first inclined surface 81 or the second inclined surface 82 to the upper surface of the support plate 8, or to make the rolling element 42 roll down from the upper surface of the support plate 8 along the first inclined surface 81 or the second inclined surface 82.

[0029] The support plate 8 can be lifted and installed on one side of the top of the electric circuit breaker trolley 7; a mounting plate 83 is connected to one side of the support plate 8, and the mounting plate 83 is perpendicular to the support plate 8. A plurality of first through holes 831 distributed in sequence up and down are provided on the mounting plate 83, and a bolt 832 is installed in the first through hole 831. The rod of the bolt 832 has a nut 833. A second through hole 71 corresponding to any first through hole 831 is provided on the side wall of the electric circuit breaker trolley 7, and the rod of the bolt 832 passes through the first through hole 831 and the second through hole 71 in sequence. The head of the bolt 832 and the nut 833 jointly clamp the mounting plate 83 and the side wall of the electric circuit breaker trolley 7. The mounting plate 83 is locked on the side wall of the electric circuit breaker trolley 7 by the locking cooperation of the bolt 832 and the nut 833, and the second through hole 71 is adjusted to correspond to any of the first through holes 831 arranged above and below, so that the support plate 8 can be lifted and installed on the top of the electric circuit breaker trolley 7, so that the support plate 8 can better cooperate and contact with the rolling element 42 of the first trigger linkage mechanism 4 and the second trigger linkage mechanism 5. Through this arrangement, the height of the support plate 8 can be adjusted in the cabinet 1 without pushing the entire electric circuit breaker trolley 7 out of the cabinet.

[0030] The rolling element 42 is a ball bearing, which is mounted on the movable end of the swing arm 41 via a pin.

[0031] In addition, it should be noted that the names of the various parts of the specific embodiments described in this specification may be different, and any equivalent or simple changes made based on the structure, features and principles described in the utility model patent concept are included in the protection scope of the utility model patent. The technical personnel of the technical field to which the utility model belongs can make various modifications or supplements to the specific embodiments described or replace them in a similar manner, as long as they do not deviate from the structure of the utility model or exceed the scope defined by the claims, they should all fall within the protection scope of the utility model.

Claims

1. A circuit breaker position confirmation device for an electric circuit breaker trolley, characterized in that: It includes a vertical plate, a first contact switch, a second contact switch, a first trigger linkage mechanism and a second trigger linkage mechanism; the vertical plate is provided with a working station where the circuit breaker has reached the working position and a maintenance station where the circuit breaker has reached the maintenance position, the working station and the maintenance station are on the same horizontal plane, and the working station is on the inner side of the maintenance station; the first contact switch is installed on the vertical plate and is located on the working station, the fixed end of the first trigger linkage mechanism is hingedly installed on the vertical plate, and the movable end of the first trigger linkage mechanism is located below the first contact switch and corresponds to the first contact switch; the second contact switch is installed on the vertical plate and is located on the maintenance station, the fixed end of the second trigger linkage mechanism is hingedly installed on the vertical plate, and the movable end of the second trigger linkage mechanism is located below the second contact switch and corresponds to the second contact switch.

2. The circuit breaker position confirmation device of the electric circuit breaker trolley according to claim 1, characterized in that: A horizontally arranged limit bar is provided on the vertical plate, and the limit bar is arranged between the working station and the maintenance station, and the fixed end of the first trigger linkage mechanism and the fixed end of the second trigger linkage mechanism are both located above the limit bar, the middle part of the first trigger linkage mechanism is engaged with the inner end of the limit bar, and the middle part of the second trigger linkage mechanism is engaged with the outer end of the limit bar; the top of the electric circuit breaker trolley is located below the limit bar.

3. The circuit breaker position confirmation device of the electric circuit breaker trolley according to claim 1, characterized in that: The first trigger linkage mechanism and the second trigger linkage mechanism both include a swing arm and a rolling member, the fixed end of the swing arm is hingedly mounted on the vertical plate, the rolling member is rotatably mounted on the movable end of the swing arm, and the landing point of the rolling member is below the lower edge of the swing arm, and the rolling member corresponds to the top of the electric circuit breaker trolley; the lower ends of the first contact switch and the second contact switch are both provided with a trigger column that can be extended up and down, and the lower end of the trigger column corresponds to the upper surface of the movable end of the swing arm.

4. The circuit breaker position confirmation device of the electric circuit breaker trolley according to claim 3, characterized in that: It also includes a support plate, which is horizontally installed on one side of the top of the electric circuit breaker trolley, and the upper surface of the support plate is in contact with the rolling element.

5. The circuit breaker position confirmation device of the electric circuit breaker trolley according to claim 4, characterized in that: The inner edge of the support plate is provided with a first inclined surface which gradually slopes downward from the outside to the inside, and the outer edge of the support plate is provided with a second inclined surface which gradually slopes downward from the inside to the outside.

6. The circuit breaker position confirmation device of the electric circuit breaker trolley according to claim 4, characterized in that: The support plate can be lifted and installed on one side of the top of the electric circuit breaker trolley; a mounting plate is connected to one side of the support plate, the mounting plate is perpendicular to the support plate, a plurality of first through holes are arranged on the mounting plate and are sequentially distributed up and down, bolts are installed in the first through holes, the rods of the bolts have nuts, a second through hole corresponding to any of the first through holes is arranged on the side wall of the electric circuit breaker trolley, the rods of the bolts pass through the first through holes and the second through holes in sequence, and the heads of the bolts and the nuts jointly clamp the mounting plate and the side walls of the electric circuit breaker trolley.

7. The circuit breaker position confirmation device of the electric circuit breaker trolley according to claim 3, characterized in that: The rolling element is a ball bearing or a roller, and the ball bearing or the roller is installed on the movable end of the swing arm through a pin.

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