Assembly for judging position of chassis truck and switch cabinet
By setting a stroke switch in the chassis truck of the medium-voltage switch cabinet, the problem of difficulty in accurately determining the position of the chassis truck during movement is solved, accurate position judgment is achieved, and cost is reduced.
Patent Information
- Application Number
- CN202420673283.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-02
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-04-02
AI Technical Summary
In the medium-voltage switch cabinet, it is difficult to accurately determine whether the chassis car has reached the test position or working position during movement, resulting in inaccurate closing process.
Design a component for judging the position of the chassis car, including a stroke switch, which is located on the moving path of the chassis car. When the chassis car reaches the target position, the state of the stroke switch changes to determine whether the chassis car has reached the test. Position or working position.
By setting a stroke switch in the chassis car, it is possible to accurately determine whether it has reached the target position during the movement of the chassis car, avoiding misjudgment, and no need to occupy secondary plug-ins, which is cheaper.
Smart Images
Figure CN222484099U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of switch cabinets, in particular to a component and a switch cabinet for determining the position of a chassis vehicle. Background Art
[0002] Medium voltage switchgear is an important component of the power system. Medium voltage switchgear usually has a trolley-type circuit breaker. The trolley-type circuit breaker usually has a chassis and a circuit breaker. The circuit breaker is located on the chassis. The chassis includes a front bracket, a mobile frame and a screw. The mobile frame is provided with rollers, and the screw can drive the mobile frame to move. Guide rails are provided on the left and right sides of the cabinet body of the switchgear. The length of the guide rails extends in the front and back direction. When the trolley-type circuit breaker moves from the outside of the cabinet body to the inside of the cabinet body of the medium voltage switchgear, it first reaches the test position, and then the screw is rotated to make the roller of the mobile frame move along the guide rail so that the chassis reaches the working position, so that the moving contact of the circuit breaker contacts the static contact installed on the switchgear, completing the closing process.
[0003] During the movement of the chassis, it is necessary to determine whether the chassis has reached the test position or the working position. Utility Model Content
[0004] In view of this, the utility model proposes a component for determining the position of a chassis vehicle, the chassis vehicle comprising a front bracket and a mobile frame, the front bracket being provided with a locking device, and when the chassis vehicle is located in a test position, the locking device can extend into a locking hole of a switch cabinet where the chassis vehicle is located, and the component comprises:
[0005] The travel switch is located on the moving path of the movable frame in the switch cabinet. When the chassis vehicle reaches the target position, the chassis vehicle can trigger the state of the travel switch to change. The target position is a test position or a working position.
[0006] According to the utility model, by arranging a travel switch in the chassis vehicle, the travel switch can be triggered during the movement of the chassis vehicle to determine whether the target position is reached in the switch cabinet, without occupying a secondary plug-in and with low cost.
[0007] According to the components as described above, optionally, the chassis vehicle also includes a front roller, which is rotatably connected to the mobile frame and is located on the side away from the front bracket, and when the target position is a test position and the mobile frame is not away from the front bracket, the distance between the front roller and the locking device is equal to the distance between the travel switch and the locking hole.
[0008] According to the assembly as described above, optionally, it further comprises: a first bracket, which is fixed on the side wall of the switch cabinet and forms a receiving cavity between the first bracket and the side wall of the switch cabinet, the travel switch corresponding to the test position is located in the receiving cavity and fixed on the first bracket, and the roller of the travel switch extends out of the receiving cavity. Fixing the first switch in the switch cabinet by the first bracket is not only convenient for installation, but also convenient for maintenance.
[0009] According to the assembly as described above, optionally, it further comprises: a second bracket fixed in the switch cabinet, and a travel switch triggered corresponding to the working position is fixed to the second bracket. The second bracket is not only convenient for installation of the second switch corresponding to the second position, but also for maintenance.
[0010] According to the components described above, optionally, the chassis vehicle further comprises: a position switch located on the moving frame, and the position switch is used to determine whether the chassis vehicle has reached the target position according to the moving distance of the moving frame, which can play a role of double verification.
[0011] According to the above-mentioned assembly, optionally, it further comprises: a position indicator light, which is fixed on the panel of the switch cabinet, the position indicator light is connected to the travel switch and the position switch, and when the travel switch is triggered and the position switch determines that the chassis vehicle has reached the target position, the position indicator light is lit. The position indicator light is convenient for staff to observe.
[0012] According to the assembly as described above, optionally, the roller of the travel switch is a metal roller, which can increase the wear resistance of the contact with the chassis vehicle.
[0013] The utility model also includes a switch cabinet, comprising the components for determining the position of a chassis vehicle as described in any one of the above items. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that those skilled in the art will be more aware of the above and other features and advantages of the present invention. In the accompanying drawings:
[0015] Figure 1 It is a structural schematic diagram of a chassis vehicle in a test position according to an embodiment of the utility model.
[0016] Figure 2 It is a structural schematic diagram of the chassis vehicle and the travel switch of the utility model.
[0017] Figure 3 The utility model is a schematic structural diagram of a first bracket of a travel switch.
[0018] The reference numerals are as follows:
[0019] 1-Chassis vehicle
[0020] 11-Front bracket
[0021] 111-Retractable sheet
[0022] 112-Handle hole
[0023] 12-Mobile frame
[0024] 121-Front roller
[0025] 122-Rear roller
[0026] 121-Screw
[0027] 21-First switch
[0028] 211-Contact
[0029] 22- Second switch
[0030] 3-First bracket
[0031] 4-Second bracket
[0032] 5-position switch
[0033] 6-Locking hole
[0034] 7-Side wall of switch cabinet
[0035] 8-Slide rail DETAILED DESCRIPTION
[0036] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail with reference to the following embodiments. The nouns and pronouns related to people in this patent application are not limited to specific genders.
[0037] The utility model provides a component for determining the position of a chassis vehicle 1, which can determine the position of the chassis vehicle 1 in a switch cabinet, for example, whether the chassis vehicle 1 is located in a test position or a working position. As an exemplary illustration, the chassis vehicle moves along a slide rail 8 in the switch cabinet.
[0038] like Figures 1 to 3As shown, the chassis vehicle 1 of the utility model includes a front bracket 11 and a mobile frame 12, and a locking device is provided on the front bracket 11. The screw rod 15 can drive the mobile frame 12 to move in a direction away from the front bracket 11 and in a direction close to the front bracket 11. When the chassis vehicle 1 is in the test position, the locking device can extend into the locking hole 6 of the switch cabinet where the chassis vehicle 1 is located. As an exemplary illustration, the locking device includes a retractable sheet 111, and when the chassis vehicle 1 moves to the test position, the retractable sheet 111 is snapped into the locking hole 6, so that the position of the front bracket 11 is fixed. Next, the handle can be inserted into the handle hole 112, and the handle is rotated to drive the screw rod 13 to rotate so that the mobile frame 12 can move forward and backward, for example, to the working position.
[0039] like Figure 1 and Figure 2 As shown, it is a schematic diagram of the structure of the chassis vehicle at the test position. The component used for judging the position of the chassis vehicle 1 includes a travel switch, which is located on the moving path of the moving frame 12 in the switch cabinet. When the chassis vehicle 1 reaches the target position, the chassis vehicle 1 can trigger the state of the travel switch 2 to change, and the target position is the test position or the working position. The number of the travel switches can be set according to actual needs and is not limited here.
[0040] Optionally, the travel switch used can be a magnetic blow travel switch 2, whose roller is made of metal, which can increase the wear resistance of the contact with the chassis 1. In addition, the travel switch with a roller is used, which is in point-to-point contact with the chassis 1, which can improve the accuracy of position judgment.
[0041] For the convenience of explanation, the travel switch corresponding to the test position is referred to as the first switch 21, and the travel switch for the working position is referred to as the second switch 22.
[0042] like Figures 1 to 3 As shown, for the first switch 21 corresponding to the test position, when the chassis vehicle 1 reaches the test position, the contact of the first switch 21 is pressed, thereby sending a signal. As an exemplary illustration, the chassis vehicle 1 also includes a front roller 121 and a rear roller 122. The front roller 121 is rotatably connected to the moving frame 12 and is located on the side away from the front bracket 11. When the target position is the test position and the moving frame 12 is not away from the front bracket 11, the distance between the front roller 121 and the locking device is equal to the distance between the first switch 21 and the locking hole 6. In the process of the chassis vehicle 1 moving from the outside of the switch cabinet to the inside of the cabinet, it first reaches the test position, the retractable piece 111 of the locking device enters the locking hole 6, the front frame 1 is positioned, and the front roller 121 of the chassis vehicle 1 presses the contact 211 of the first switch 21, as shown in FIG. Figure 1 and Figure 2As shown. In this way, the first switch 21 can trigger a signal representing that the chassis vehicle 1 is in the test position at this time. Figure 2 It can be seen that if the front roller 121 continues to move, the front roller 121 will be separated from the first switch 21, and the first switch 21 is not pressed. Then, it can be known through the first switch 21 that the chassis vehicle 1 has left the test position.
[0043] The second switch 22 located at the working position is also located on the moving path of the moving carriage 12 in the switch cabinet. Figure 2 It can be seen from the figure that the second switch 22 is located inside the cabinet, so that when the moving frame 12 reaches the working position, it can touch the contact of the second switch 22, thereby triggering the second switch 22.
[0044] The triggering of the travel switch of the present invention indicates that the state of the travel switch changes, for example, by pressing the contact 211. The contact 211 is specifically a roller.
[0045] According to the utility model, by setting a travel switch in the chassis 1, the travel switch can be triggered during the movement of the chassis 1 to determine whether the target position is reached in the switch cabinet, without occupying a secondary plug-in and with low cost.
[0046] As an exemplary illustration, the assembly for determining the position of the chassis vehicle 1 of the utility model further includes a first bracket 3, which is fixed to the side wall 7 of the switch cabinet and forms a receiving cavity between the first bracket 3 and the side wall 7 of the switch cabinet. The first switch 21 corresponding to the test position is located in the receiving cavity and fixed to the first bracket 3, and the contact 211 of the first switch 21 extends out of the receiving cavity. Figure 2 As shown, the first bracket 3 can be mounted on the side wall 7 of the switch cabinet by screws, and only the contact 211 of the first switch 21 extends out of the accommodating cavity, which can prevent other components from touching the first switch 21 as much as possible. In addition, the number of the first switches 21 corresponding to the test position can be 1 or 2, and the two first switches 21 can be symmetrically distributed. Fixing the first switch 21 in the switch cabinet by the first bracket 3 is not only convenient for installation, but also convenient for maintenance.
[0047] As an exemplary illustration, the assembly for determining the position of the chassis vehicle 1 of the present invention further includes a second bracket 4, which is fixed in the switch cabinet, and a second switch 22 corresponding to the working position is fixed to the second bracket 4. Figure 2 As shown, the second bracket 4 can be fixed in the switch cabinet by bolts. The second bracket 4 is used to facilitate not only the installation of the second switch 22 corresponding to the second position, but also the maintenance.
[0048] In addition, the chassis vehicle 1 may further include a position switch 5, which can determine whether the chassis vehicle 1 has reached the target position according to the moving distance of the moving frame 12. Figure 1 and Figure 2 As shown, the position switch 5 is fixed on the moving frame 12 of the chassis 1, and the position of the chassis 1 can be determined by the movement of the moving frame 12. However, the position switch 5 cannot determine whether the chassis 1 is located in the switch cabinet, that is, when the chassis 1 moves outside the switch cabinet, the position switch 5 will send out an erroneous signal due to the moving distance of the moving frame 12. Therefore, the existence of the first switch 21 or the second switch 22 can play a double verification role. As a specific example, two position switches 5 are provided on the chassis 1, one of which is used to determine whether the chassis 1 has reached the test position, and the other position switch 5 is used to determine whether the chassis 1 has reached the working position.
[0049] Optionally, the component for determining the position of the chassis 1 also includes a position indicator light (not shown in the figure), which can be fixed on the panel of the switch cabinet. The position indicator light can be connected to the travel switch and the position switch 5, and can be connected to the travel switch and the position switch 5 through a physical line, so that it can be determined whether it is lit according to the signal of the travel switch and the position switch 5, which can be realized by a physical circuit, which will not be repeated here. As a specific illustration, when the chassis 1 enters the switch cabinet and moves to the test position, the first switch 21 and the position switch 5 used to determine whether the chassis 1 has reached the test position send a signal at the same time, and the position indicator light is lit. At this time, it can be determined that the chassis 1 has reached the test position; when the chassis 1 enters the switch cabinet and moves to the working position, the second switch 22 and the position switch 5 used to determine whether the chassis 1 has reached the working position send a signal at the same time, and the position indicator light is lit. At this time, it can be determined that the chassis 1 has reached the working position. Specifically, different colors can be used to represent the test position and the working position. The position indicator light is convenient for staff to observe.
[0050] The utility model also provides a switch cabinet, which includes any one of the aforementioned components for determining the position of a chassis vehicle 1. As an exemplary illustration, the switch cabinet is an air-insulated switch cabinet.
[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A component for determining the position of a chassis vehicle (1), the chassis vehicle (1) comprising a front bracket and a moving frame (12), the front bracket being provided with a locking device, and when the chassis vehicle (1) is located in a test position, the locking device can extend into a locking hole (6) of a switch cabinet where the chassis vehicle (1) is located, characterized in that: The components include: A travel switch is located on a moving path of the movable frame (12) in the switch cabinet, and when the chassis vehicle (1) reaches a target position, the chassis vehicle (1) can trigger a change in the state of the travel switch, wherein the target position is a test position or a working position.
2. The assembly according to claim 1, characterized in that The chassis vehicle (1) further comprises a front roller (121), the front roller (121) being rotatably connected to the movable frame (12) and being located at a side away from the front bracket, and when the target position is a test position and the movable frame (12) is not away from the front bracket, the distance between the front roller (121) and the locking device is equal to the distance between the travel switch and the locking hole (6).
3. The assembly according to claim 2, characterized in that Also includes: A first bracket (3) is fixed on a side wall (7) of the switch cabinet and forms a receiving cavity between the first bracket and the side wall (7) of the switch cabinet; the travel switch corresponding to the test position is located in the receiving cavity and fixed on the first bracket (3); and the contact (211) of the travel switch extends out of the receiving cavity.
4. The assembly according to claim 1, characterized in that Also includes: A second bracket (4) is fixed in the switch cabinet, and a travel switch triggered corresponding to the working position is fixed to the second bracket (4).
5. The assembly according to claim 1, characterized in that The chassis vehicle (1) further comprises: A position switch (5) is located on the moving frame (12), and the position switch (5) is used to determine whether the chassis vehicle (1) has reached the target position according to the moving distance of the moving frame (12).
6. The assembly according to claim 5, characterized in that Also includes: A position indicator light is fixed on a panel of the switch cabinet, the position indicator light is connected to the travel switch and the position switch (5), and when the travel switch is triggered and the position switch (5) determines that the chassis vehicle (1) has reached the target position, the position indicator light is lit.
7. The assembly according to any one of claims 1 to 6, characterized in that The roller of the travel switch is a metal roller.
8. A switch cabinet, characterized in that: A component for determining the position of a chassis vehicle (1) comprising any one of claims 1 to 7.