Change-over switch for subway
By designing a subway transfer switch that includes a transfer switch assembly and a micro switch assembly, the problem of requiring manual operation of the power supply interlock control circuit in the existing technology has been solved, thus improving automatic control and electrical safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-23
- Publication Date
- 2026-03-27
AI Technical Summary
The existing subway transfer switch requires train operators to manually operate the switch of the depot power interlock control circuit when it is in the depot use position. This increases the workflow, poses a risk of forgetting to operate it, and affects electrical safety.
A changeover switch for subway use was designed, comprising a changeover switch assembly and a micro switch assembly. It achieves power supply and grounding protection through automatic switching, and can control the interlock control circuit for depot power supply and other circuit circuits, simplifying the operation process and avoiding potential hazards.
While achieving subway power supply and grounding protection, the automatic control system uses power interlock control circuits and other circuits to improve electrical safety and avoid safety hazards caused by oversight.
Smart Images
Figure CN224053041U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of subway switch, in particular to a subway change-over switch. BACKGROUND
[0002] Change-over switch is a kind of low-voltage switch that switches multiple circuits, multiple moving contacts are stacked on the shaft, and when the shaft rotates, the moving contacts are sequentially connected or disconnected with static contacts, so as to change the circuit from one set of connection to another set of connection in the electrical appliance, and change-over switch is a switch appliance that can be used for switching two or more power sources or loads.
[0003] The current subway change-over switch is generally a three-position change-over switch, which is placed in the running position, the cut-off position or the storage position, so as to realize the function of supplying power to the vehicle power trunk or grounding protection.
[0004] When the change-over switch is placed in the storage position, considering the safety of electricity use, the train attendant needs to open the switch of the control storage power interlocking control circuit to ensure the safety of electricity use when the subway uses the storage power source, which increases the work process of the train attendant and has the risk of forgetting. INVENTION CONTENTS
[0005] The utility model provides a kind of subway change-over switch to solve the technical problem proposed in the above background art.
[0006] The utility model provides a kind of subway change-over switch, the subway change-over switch includes switch installation bottom plate, change-over switch component and microswitch component, the change-over switch component is set in the top of the switch installation bottom plate, and for realizing the power supply or grounding protection of subway, the microswitch component is set in the top of the switch installation bottom plate, and it is located in the side of the switch installation bottom plate, the microswitch component is connected with the change-over switch component, and for controlling storage power interlocking control circuit or other circuit loop used by subway.
[0007] Optionally, the transfer switch assembly comprises mounting blocks, static blades, first copper bars, second copper bars, dynamic blades and connecting bolts, the mounting blocks are provided with three, the three mounting blocks are linearly and sequentially fixed on the top end of the switch mounting bottom plate, the static blades are provided with two, the two static blades are fixed on the top end of the switch mounting bottom plate and are fixedly connected with the two mounting blocks at the two ends of the switch mounting bottom plate, the first copper bars are provided with two, the two first copper bars correspond to the two static blades, the first copper bars are arranged on the top end of the mounting blocks and are bolted with the static blades, the second copper bars are located between the two first copper bars, the second copper bars pass through the switch mounting bottom plate and are fixedly connected with the mounting blocks, the dynamic blades are provided with two, the two dynamic blades are located on the two sides of the second copper bars and are rotatably connected with the second copper bars, and the connecting bolts are located on the ends of the dynamic blades away from the second copper bars and are connected with the two dynamic blades.
[0008] Optionally, the transfer switch assembly further comprises a handle, the handle is arranged on the end of the dynamic blade away from the second copper bar and is bolted with the two dynamic blades.
[0009] Optionally, a damping spring is arranged on the connecting bolt, the damping spring is sleeved on the bolt rod of the connecting bolt and is located on the side of the dynamic blade away from the other dynamic blade.
[0010] Optionally, the micro switch assembly comprises mounting plates, switch groups and a lever, the mounting plates are provided with two, the two mounting plates are vertically and fixedly installed on the top end of the switch mounting bottom plate and are located on the side of the switch mounting bottom plate, the switch groups are provided with two groups, the two groups of switch groups are arranged on the side walls of the two mounting plates close to the static blades, the switch groups are used for controlling the power interlock control loop of the library or other circuit loops of the subway, the lever is horizontally arranged, one end of the lever is fixedly connected with the side wall of the dynamic blade, and the other end of the lever is connected with the switch group.
[0011] Optionally, the switch group comprises a static contact block, a dynamic contact block, a transmission rod, a button, a fixed plate and a reset spring, the static contact block is fixedly arranged on the side wall of the mounting plate close to the static blade, the dynamic contact block is located above the static contact block and is in sliding connection with the side wall of the mounting plate, the transmission rod penetrates the top end of the dynamic contact block and is fixedly connected with the dynamic contact block, the button is fixedly arranged on the top end of the transmission rod, the fixed plate is arranged in the dynamic contact block and is fixedly connected with the side wall of the mounting plate, and the reset spring is arranged in the dynamic contact block and is sleeved on the transmission rod, one end of the reset spring is fixedly connected with the fixed plate and the other end is fixedly connected with the transmission rod, and the reset spring is used for resetting the dynamic contact block.
[0012] The utility model discloses beneficial effects as follows:
[0013] The switch mounting bottom plate, the change-over switch assembly and the micro switch assembly are arranged on the top end of the switch mounting bottom plate, the change-over switch assembly is used for realizing power supply or grounding protection of the subway, the micro switch assembly is arranged on the top end of the switch mounting bottom plate and is located on one side of the switch mounting bottom plate, the micro switch assembly is connected with the change-over switch assembly and is used for controlling the power interlock control loop of the library or other circuit loops of the subway, and the change-over switch of the utility model can control the power interlock control loop of the library and other circuit loops of the subway while meeting the power supply and grounding protection functions, so that the power safety problem caused by the forgetting hidden danger is avoided. BRIEF DESCRIPTION OF DRAWINGS
[0014] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the drawings needed to be used in the embodiment description will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the utility model, and for the ordinary skilled in the art, other drawings can be obtained according to these drawings without creating creative labor.
[0015] Fig. 1 It is a structure schematic view of the change-over switch for subway provided by the utility model,
[0016] Fig. 2 It is a structure schematic view of the switch group.
[0017] Mark explanation:
[0018] 1, switch mounting base plate; 2, transfer switch assembly; 21, mounting block; 22, static blade; 23, first copper bar; 24, second copper bar; 25, moving blade; 26, connecting bolt; 27, handle; 28, shock absorbing spring; 3, micro switch assembly; 31, mounting plate; 32, switch group; 321, static contact block; 322, moving contact block; 323, transmission rod; 324, button; 325, fixed plate; 326, reset spring; 33, lever. DETAILED DESCRIPTION
[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described in the embodiments of the utility model combined with the drawings in the embodiments of the utility model. It can be understood that the specific embodiments described herein are only used to explain the utility model, and not limit the utility model. In addition, it should be noted that only the parts related to the utility model are shown in the drawings, not all the structures. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.
[0020] In this paper, the "embodiment" means that the specific features, structures or characteristics described in the embodiment can be contained in at least one embodiment of the utility model. The phrase appears in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment to other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.
[0021] Please refer to Figs. 1-2 The utility model discloses a transfer switch for subway includes switch mounting base plate 1, transfer switch assembly 2 and micro switch assembly 3,
[0022] Transfer switch assembly 2 is arranged at the top of switch mounting base plate 1, and is used to realize the power supply or grounding protection of subway, micro switch assembly 3 is arranged at the top of switch mounting base plate 1 and is located at one side of switch mounting base plate 1, micro switch assembly 3 is connected with transfer switch assembly 2, and is used to control the power interlock control loop for control library or other circuit loops for subway,
[0023] Among them, transfer switch assembly 2 can make subway automatic conversion in running position, cut-off position and library position, so as to realize the power supply of subway power trunk and grounding protection, transfer switch assembly 2 and micro switch assembly 3 are connected, transfer switch assembly 2 drives micro switch assembly 3 to work at the same time, so that the subway can control the power interlock control loop for control library and other circuit loops while meeting its power supply and grounding protection function, thereby avoiding the power safety problem existing due to the forgotten hidden danger.
[0024] In the embodiment, the switch assembly 2 comprises three mounting blocks 21, two static blades 22, two first copper bars 23, a second copper bar 24, two dynamic blades 25 and connecting bolts 26. The three mounting blocks 21 are linearly arranged on the top end of the switch mounting base plate 1. The two static blades 22 are arranged on the top end of the switch mounting base plate 1 and fixedly connected with the two mounting blocks 21 at the two ends of the switch mounting base plate 1. The two first copper bars 23 correspond to the two static blades 22 respectively. The first copper bars 23 are arranged on the top end of the mounting blocks 21 and bolted with the static blades 22. The second copper bar 24 is arranged between the two first copper bars 23 and penetrates through the switch mounting base plate 1 and is fixedly connected with the mounting blocks 21. The two dynamic blades 25 are arranged on the two sides of the second copper bar 24 and rotatably connected with the second copper bar 24. The connecting bolts 26 are arranged on the end of the dynamic blades 25 away from the second copper bar 24 and connected with the two dynamic blades 25.
[0025] The two first copper bars 23 and the second copper bar 24 are connected to the "operation", "storage" and "ground" positions respectively. When the dynamic blade 25 is rotated to the first copper bar 23 of the operation position, the connecting bolt 26 is in contact with the first copper bar 23, the metro uses the catenary power supply. When the dynamic blade 25 is rotated to the first copper bar 23 of the storage position, the metro uses the storage power supply. When the connecting bolt 26 is not in contact with the first copper bar 23, the metro cuts off the power supply, thereby realizing the function of power supply or power-off protection of the metro power supply trunk with different power sources.
[0026] In the embodiment, the switch assembly 2 further comprises a handle 27 arranged on the end of the dynamic blade 25 away from the second copper bar 24 and bolted with the two dynamic blades 25.
[0027] The handle 27 makes it easy for the user to rotate the dynamic blade 25, thereby making it easy for the metro to switch the power supply source.
[0028] In the embodiment, the connecting bolt 26 is provided with a damping spring 28, which is sleeved on the bolt rod of the connecting bolt 26 and located on the side of the dynamic blade 25 away from the other dynamic blade 25.
[0029] When the dynamic blade 25 is rotated to the first copper bar 23 and the connecting bolt 26 is in contact with the first copper bar, the damping spring 28 is deformed to absorb or store part of the energy, thereby reducing the vibration transmission to the surrounding structure.
[0030] In the embodiment, the micro switch assembly 3 comprises mounting plates 31, switch groups 32 and a lever 33, the mounting plates 31 are provided with two, both of which are vertically fixedly installed at the top end of the switch mounting bottom plate 1 and located at one side of the switch mounting bottom plate 1, the switch groups 32 are provided with two groups, both of which are arranged on the side wall of the two mounting plates 31 close to the static blade 22, the switch groups 32 are used for controlling the power interlock control loop for the library or other circuit loops for the subway, the lever 33 is horizontally arranged, one end of the lever 33 is fixedly connected with the side wall of the moving blade 25, and the other end is connected with the switch group 32.
[0031] Among them, the two groups of switch groups 32 are respectively connected with the pantograph control loop and the power interlock control loop for the library, when the moving blade 25 rotates to the first copper bar 23 at the connection running position, the lever 33 rotates with the moving blade 25, at this time, the lever 33 is connected with the switch group 32 connected with the pantograph control loop, when the moving blade 25 rotates to the first copper bar 23 at the connection library position, the lever 33 is connected with the switch group 32 of the power interlock control loop for the library, so that the train staff is more easy to control the subway.
[0032] In the embodiment, the switch group 32 comprises a static contact block 321, a moving contact block 322, a transmission rod 323, a button 324, a fixed plate 325 and a reset spring 326, the static contact block 321 is fixedly arranged on the side wall of the mounting plate 31 close to the static blade 22, the moving contact block 322 is located above the static contact block 321 and is slidably connected with the side wall of the mounting plate 31, the transmission rod 323 penetrates the top end of the moving contact block 322 and is fixedly connected with the moving contact block 322, the button 324 is fixedly arranged on the top end of the transmission rod 323, the fixed plate 325 is arranged in the moving contact block 322 and is fixedly connected with the side wall of the mounting plate 31, the reset spring 326 is arranged in the moving contact block 322 and is sleeved on the transmission rod 323, one end of the reset spring 326 is fixedly connected with the fixed plate 325, and the other end is fixedly connected with the transmission rod 323, the reset spring 326 is used for resetting the moving contact block 322.
[0033] When the dial lever 33 rotates to the switch group 32 along with the blade 25, the dial lever 33 moves the button 324 downward, the transmission lever 323 moves downward along with the button 324, the transmission lever 323 drives the movable contact block 322 to move downward, the reset spring 326 is compressed and accumulates elastic force, when the movable contact block 322 contacts with the static contact block 321, the circuit loop is connected, when the dial lever 33 is separated from the button 324, the reset spring 326 restores under the action of the elastic force, the movable contact block 322 is separated from the static contact block 321, the circuit loop is disconnected, thereby realizing the control of the subway circuit loop.
[0034] The subway switch includes a switch mounting base plate 1, a switch assembly 2 and a micro switch assembly 3, the switch assembly 2 is arranged at the top end of the switch mounting base plate 1 and is used for realizing the power supply or grounding protection of the subway, the micro switch assembly 3 is arranged at the top end of the switch mounting base plate 1 and is located at one side of the switch mounting base plate 1, the micro switch assembly 3 is connected with the switch assembly 1 and is used for controlling the power interlock control loop of the library or other circuit loops of the subway, the subway switch of the utility model realizes the control of the power interlock control loop of the library and other circuit loops of the subway while meeting the power supply and grounding protection functions, thereby avoiding the power safety problem caused by the forgotten hidden danger.
[0035] The above-mentioned is only the embodiment of the utility model, and does not limit the patent range of the utility model, and equivalent structures or equivalent process transformations using the utility model specification and the drawings, or direct or indirect application in other related technical fields, are all included in the patent protection range of the utility model.
Claims
1. A changeover switch for subway use, characterized in that, include Switch mounting base plate; A changeover switch assembly is disposed at the top of the switch mounting base plate and is used to provide power supply or grounding protection for the subway. A micro switch assembly is disposed at the top of the switch mounting base plate and located on one side of the switch mounting base plate. The micro switch assembly is connected to the changeover switch assembly and is used to control the power interlock control circuit for the warehouse or other circuit circuits for the subway.
2. A subway changeover switch according to claim 1, characterized in that, The changeover switch assembly includes mounting blocks, stationary blades, a first copper busbar, a second copper busbar, moving blades, and connecting bolts. Three mounting blocks are linearly and sequentially fixed to the top of the switch mounting base plate. Two stationary blades are fixed to the top of the switch mounting base plate and respectively connected to two mounting blocks located at opposite ends of the base plate. Two first copper busbars are provided, each corresponding to one of the stationary blades. The first copper busbars are located at the top of the mounting blocks and bolted to the stationary blades. A second copper busbar is located between the two first copper busbars, passes through the switch mounting base plate, and is fixedly connected to the mounting blocks. Two moving blades are located on either side of the second copper busbar and are rotatably connected to it. The connecting bolts are located at the end of the moving blade furthest from the second copper busbar and are connected to both moving blades.
3. A subway changeover switch according to claim 2, characterized in that, The changeover switch assembly also includes a handle, which is located at the end of the moving blade away from the second copper busbar and is bolted to both moving blades.
4. A subway changeover switch according to claim 2, characterized in that, A shock-absorbing spring is provided on the connecting bolt. The shock-absorbing spring is sleeved on the bolt shank of the connecting bolt and is located on the side of the moving blade away from the other moving blade.
5. A subway changeover switch according to claim 2, characterized in that, The micro switch assembly includes a mounting plate, a switch group, and a lever. There are two mounting plates, both of which are vertically fixed on the top of the switch mounting base plate and located on one side of the switch mounting base plate. There are two switch groups, which are respectively set on the side walls of the two mounting plates near the stationary blade. The switch groups are used to control the power interlock control circuit for the warehouse or other circuits for the subway. The lever is horizontally set, with one end fixedly connected to the side wall of the moving blade and the other end connected to the switch group.
6. A subway changeover switch according to claim 5, characterized in that, The switch assembly includes a stationary contact block, a moving contact block, a transmission rod, a button, a fixing plate, and a return spring. The stationary contact block is fixedly mounted on the side wall of the mounting plate near the stationary blade. The moving contact block is located above the stationary contact block and is slidably connected to the side wall of the mounting plate. The transmission rod passes through the top of the moving contact block and is fixedly connected to the moving contact block. The button is fixedly mounted on the top of the transmission rod. The fixing plate is disposed inside the moving contact block and is fixedly connected to the side wall of the mounting plate. The return spring is disposed inside the moving contact block and sleeved on the transmission rod. One end of the return spring is fixedly connected to the fixing plate, and the other end is fixedly connected to the transmission rod. The return spring is used to reset the moving contact block.