Squeezing-off device of railway switch machine

Abstract

The embodiment of the invention relates to mechanical equipment for controlling a turnout, in particular to a squeezing-off device of a railway switch machine. The railway switch machine comprises locking iron, a movable contact group, a static contact group and an extrusion device. The extrusion device comprises a first action piece, a first installation piece and an extrusion indication piece. The first mounting piece is provided with a first mounting hole; the first action piece is located in the first mounting hole, the movable contact group comprises a matching piece matched with the first action piece, and the first action piece can move towards the direction of the matching piece along the first mounting hole when the locking iron generates displacement so as to jack up the matching piece, so that the movable contact group and the static contact group are electrically disconnected; at least part of the extrusion-off indication piece is located in the first installation hole, and when the locking iron generates displacement, the extrusion-off indication piece is pushed away from the first installation hole by the first action piece and is kept outside the first installation hole. According to the squeezing-off device provided by the embodiment of the invention, a worker can conveniently judge the reason of a squeezing-off accident from the appearance.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of mechanical equipment for operating turnouts, and in particular to a disengagement device for a railway switch machine. Background Art

[0002] The statements herein merely provide background information related to the present application and do not necessarily constitute prior art.

[0003] When the turnout and railway switch machine are working normally, the base rail and the point rail can fit tightly; but when there are foreign objects (such as rocks or ice) between the point rail and the base rail, the base rail and the point rail cannot fit tightly, and the railway switch machine will have an extrusion accident.

[0004] When a railway switch machine is in a state of being disengaged, the circuit is disconnected through the disengagement device inside the railway switch machine, so that the station staff can quickly obtain the accident information and go to the accident site for manual restoration. Summary of the invention

[0005] A brief overview of the present application is provided below in order to provide a basic understanding of certain aspects of the present application. It should be understood that this overview is not an exhaustive overview of the present application. It is not intended to identify the key or important parts of the present application, nor is it intended to limit the scope of the present application. Its purpose is merely to present certain concepts in a simplified form as a prelude to a more detailed description discussed later.

[0006] The embodiments of the present application provide an extrusion device and a railway switch machine using the same.

[0007] In the first aspect, an embodiment of the present application provides an extrusion device. A railway switch includes a locking iron, a moving contact group, and a static contact group. When an extrusion accident occurs, the locking iron will be displaced. The extrusion device is used to make the moving contact group be in a position where it is electrically disconnected from the static contact group when the locking iron is displaced. The extrusion device includes a first actuating member, a first mounting member, and an extrusion indicating member. Among them, the first mounting member is configured to have a first mounting hole; the first actuating member is disposed in the first mounting hole, the moving contact group includes a mating member for cooperating with the first actuating member, and the first actuating member is configured to be able to move along the first mounting hole toward the mating member of the moving contact group when the locking iron is displaced, so as to lift the mating member and disconnect the moving contact group from the static contact group electrically; at least part of the extrusion indicating member is disposed in the first mounting hole, and when the first actuating member moves along the first mounting hole toward the mating member of the moving contact group, the extrusion indicating member is pushed away from the first mounting hole by the first actuating member and is retained outside the first mounting hole.

[0008] In the event of an extrusion accident, the extrusion indicating member provided in the embodiment of the present application can remain outside the first mounting hole after being pushed away from the first mounting hole by the first actuating member, and the extrusion indicating member is not likely to return to the first mounting hole without the intervention of staff, thereby facilitating the staff to judge the cause of the extrusion accident from the appearance of the extrusion device.

[0009] In a second aspect, an embodiment of the present application provides a railway switch, which includes a locking iron, two moving contact groups, two static contact groups and two extrusion devices provided in the embodiment of the first aspect of the present application, wherein when an extrusion accident occurs, the locking iron will be displaced, and the two extrusion devices are used to make the two moving contact groups respectively be in a position where they are electrically disconnected from the two static contact groups when the locking iron is displaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Other objects and advantages of the present application will become apparent from the following description of the embodiments of the present application with reference to the accompanying drawings, and will help to provide a comprehensive understanding of the present application.

[0011] Figure 1 It is a cross-sectional schematic diagram of an extrusion device provided in an embodiment of the present application.

[0012] Figure 2 yes Figure 1 A partially enlarged schematic diagram of the extrusion device after the extrusion indicating member is pushed away from the first mounting hole by the first actuating member.

[0013] Figure 3 yes Figure 1 The schematic diagram of the structure of the extrusion device omits the first mounting member and the second mounting member.

[0014] Figure 4 yes Figure 1 Schematic diagram of the structure of the extrusion display component in the extrusion device.

[0015] Figure 5 It is a schematic diagram of the structure of a railway switch provided in an embodiment of the present application.

[0016] Figure 6 yes Figure 5 The schematic diagram of the structure of the railway switch machine after the static contact group and the moving contact are omitted, in which the railway switch machine has an extrusion accident.

[0017] Figure 7 yes Figure 6 Schematic diagram of the structure of the railway switch machine when no squeeze-out accident occurs.

[0018] Figure 8 yes Figure 6 Schematic diagram of the structure of the railway switch machine at another angle.

[0019] Description of reference numerals:

[0020] 100. Railway switch machine;

[0021] 10. Extrusion device; 11. First action member; 111. Protrusion; 12. First mounting member; 121. First mounting hole; 13. Extrusion indicator; 131. Plug body; 1311. Barb; 132. Cover body; 14. Second action member; 141. Concave portion; 15. Second mounting member; 151. Second mounting hole; 16. First force providing member; 17. Second force providing member;

[0022] 20. Locking iron; 30. Moving contact group; 31. Matching part; 32. Moving contact frame; 40. Static contact group; 41. Static contact; 50. Disc spring; 60. Mounting frame; 70. Connecting rod assembly; 71. Elastic part.

[0023] It should be noted that the drawings are not necessarily drawn to scale, but are merely shown in a schematic manner that does not affect the reader's understanding. DETAILED DESCRIPTION

[0024] Exemplary embodiments of the present application will be described below in conjunction with the accompanying drawings. For the sake of clarity and conciseness, not all features of the actual implementation are described in the specification. However, it should be understood that many implementation-specific decisions must be made in the process of developing any such actual implementation in order to achieve the developer's specific goals, such as meeting those constraints related to the system and business, and these constraints may vary from implementation to implementation. In addition, it should be understood that although the development work may be very complex and time-consuming, it is only a routine task for those skilled in the art who benefit from the content of this application.

[0025] It is also necessary to explain here that, in order to avoid obscuring the present application due to unnecessary details, only the device structure and / or processing steps closely related to the scheme according to the present application are shown in the accompanying drawings, while other details that are not very relevant to the present application are omitted.

[0026] The extrusion device in the related technology usually includes a rod. After the extrusion accident occurs, the rod is lifted from the initial position to separate the moving contact group from the static contact group to disconnect the circuit, so that the station staff can quickly obtain the information and go to manually restore it.

[0027] The inventor of the present application found that the rod may be reset (i.e., in the initial position) after being lifted due to other factors (such as vibration), so that the moving contact group and the static contact group are electrically connected again. In this way, when the station staff arrives at the accident site, since the rod is in the initial position, the station staff cannot determine whether extrusion has occurred from the appearance of the extrusion device and cannot quickly analyze the cause of the accident.

[0028] In order to solve the above-mentioned technical problems, an embodiment of the present application provides a railway switch machine extrusion device.

[0029] See also Figures 1 to 3 The extrusion device 10 provided in the embodiment of the present application may include a first action member 11, a first mounting member 12 and an extrusion indicating member 13. The first mounting member 12 is configured to have a first mounting hole 121; the first action member 11 is disposed in the first mounting hole 121.

[0030] See also Figures 4 to 8 The railway switch machine 100 includes a locking iron 20, a moving contact group 30 and a static contact group 40. When an extrusion accident occurs, the locking iron 20 will be displaced. The extrusion device 10 is used to make the moving contact group 30 be in a position where the electrical connection with the static contact group 40 is disconnected when the locking iron 20 is displaced.

[0031] The moving contact group 30 includes a mating piece 31 for mating with the first moving piece 11. The first moving piece 11 is configured to move along the first mounting hole 121 toward the mating piece 31 of the moving contact group 30 when the locking iron 20 is displaced, so as to lift the mating piece 31 and disconnect the moving contact group 30 from the static contact group 40 electrically. At least part of the extrusion indicating piece 13 is disposed in the first mounting hole 121. When the first moving piece 11 moves along the first mounting hole 121 toward the mating piece 31 of the moving contact group 30, the extrusion indicating piece 13 is pushed away from the first mounting hole 121 by the first moving piece 11 and is retained outside the first mounting hole 121.

[0032] The extrusion device 10 provided in the embodiment of the present application can, when an extrusion accident occurs, keep the extrusion indicator part 13 outside the first mounting hole 121 after being pushed away from the first mounting hole 121 by the first actuating part 11, and it is not easy for the extrusion indicator part 13 to return to the first mounting hole 121 without the intervention of staff, thereby facilitating the staff to judge the cause of the extrusion accident from the appearance of the extrusion device 10.

[0033] The railway switch machine 100 generally includes two movable contact groups 30 and two stationary contact groups 40. Figure 6 In some embodiments, the moving contact group 30 may further include a moving contact frame 32 and a plurality of moving contacts, and the mating member 31 is disposed on a side of the moving contact frame 32 facing another moving contact group 30 .

[0034] The moving contact frame 32 can swing to both sides, and a plurality of moving contacts are arranged on the moving contact frame 32, and can swing to both sides following the moving contact frame 32. In some embodiments, the static contact group 40 may include a plurality of static contacts 41 and a static contact frame, and the static contacts 41 are arranged on the static contact frame. The static contact frame is provided with a slot, and a plurality of static contacts 41 are arranged on both sides of the slot.

[0035] The movable contact can enter the slot to contact the stationary contact 41. Figure 7 When no extrusion accident occurs, the moving contact frame 32 drives the moving contact to swing, so that multiple moving contacts contact with the static contacts 41 on both sides of the slot. At this time, the moving contact group 30 is electrically connected with the static contact group 40, and the indication circuit is turned on.

[0036] In some embodiments, see Figure 6 When an extrusion accident occurs, the movement of the first actuating member 11 can push open the moving contact group 30, so that the moving contact group 30 cannot swing to the left or right but remains in a vertical and non-tilted state, so that the moving contact group 30 is electrically disconnected from the static contact group 40, thereby disconnecting the indicating circuit to alert the staff and make them aware of the extrusion accident.

[0037] In some embodiments, the surface of the mating piece 31 facing the first mounting piece 12 is an inclined surface, that is, the surface where the mating piece 31 abuts against the first actuating piece 11 is an inclined surface, thereby facilitating the first actuating piece 11 to lift the mating piece 31. At the same time, the inclined surface makes it easy for the moving contact group 30 to maintain a vertical and non-tilted state.

[0038] In some embodiments, after the staff arrives at the site for inspection, the squeeze-out indicating member 13 that has been separated from the first mounting hole 121 can be pushed back into the first mounting hole 121 .

[0039] In some embodiments, the first action member 11 may be a rod, and the matching member 31 may be a protrusion.

[0040] See also Figure 1 In some embodiments, the extrusion indicator 13 and the first mounting hole 121 may be an interference fit. The interference fit means that the size of the extrusion indicator 13 is larger than the size of the first mounting hole 121. The extrusion indicator 13 and the first mounting hole 121 are set to an interference fit, so that the extrusion indicator 13 will not easily detach from the first mounting hole 121, thereby preventing the extrusion indicator 13 from detaching from the first mounting hole 121 when no extrusion accident occurs; at the same time, the interference fit can also ensure that the extrusion indicator 13 after detachment will not easily return to the first mounting hole 121.

[0041] In some embodiments, the extrusion indicator 13 may be formed of an elastic material. The extrusion indicator 13 is configured to be made of an elastic material so that the extrusion indicator 13 can enter the first mounting hole 121 smaller than the extrusion indicator 13 through elastic deformation, thereby achieving an interference fit between the extrusion indicator 13 and the first mounting hole 121. In some embodiments, the elastic material may be rubber.

[0042] See also Figure 4 In some embodiments, the extrusion indicating member 13 may include a plug body 131 , which is sleeved on the first actuating member 11 and disposed in the first mounting hole 121 .

[0043] In some embodiments, the plug body 131 is provided with a barb 1311 structure. The barb 1311 structure on the plug body 131 can prevent the squeeze-out indicating member 13 from being separated from the first mounting hole 121 due to vibration when no squeeze-out accident occurs. At the same time, since the plug body 131 is provided with the barb 1311 structure, the size of the portion of the plug body 131 provided with the barb 1311 can be set larger, thereby preventing the squeeze-out indicating member 13 from returning to the first mounting hole 121 under the action of gravity after being separated from the first mounting hole 121.

[0044] See also Figure 4 In some embodiments, the extrusion indicating member 13 may further include a cover 132, which is connected to the plug 131, and is sleeved on the first actuating member 11, and abuts against the first mounting member 12. By providing the cover 132 abutting against the first mounting member 12, when the first mounting member 12 moves along the first mounting hole 121 toward the mating member 31 of the moving contact group 30, the first mounting member 12 can push the extrusion indicating member 13 to move.

[0045] See also Figure 1 In some embodiments, the length of the extrusion indicating member 13 is less than the length of the first actuating member 11 extending out of the first mounting hole 121 after moving along the first mounting hole 121 toward the mating member 31 of the moving contact assembly 30, so as to ensure that the extrusion indicating member 13 will not re-enter the first mounting hole 121 due to extrusion after being pushed out of the first mounting hole 121.

[0046] In some embodiments, there may be a clearance fit between the extrusion indicating member 13 and the first actuating member 11. In some embodiments, the first actuating member 11 may also be formed with a protrusion 111, which is used to drive the extrusion indicating member 13 to move toward the mating member 31 of the moving contact group 30 when the first actuating member 11 moves along the first mounting hole 121 toward the mating member 31 of the moving contact group 30.

[0047] See also Figures 1 to 3In some embodiments, the extrusion device 10 may further include a second actuating member 14 and a second mounting member 15. The second mounting member 15 is configured to have a second mounting hole 151; the second actuating member 14 is disposed in the second mounting hole 151, and the second actuating member 14 is configured to move along the second mounting hole 151 when the locking iron 20 is displaced, thereby driving the first actuating member 11 to move along the first mounting hole 121 toward the mating member 31 of the moving contact group 30.

[0048] See also Figure 1 In some embodiments, the second action member 14 may be a rod. In some embodiments, a depression 141 that is concave downward may be formed on the second action member 14, and one end of the first action member 11 away from the matching member 31 enters the depression 141. When the locking iron 20 is displaced, the second action member 14 moves along the second mounting hole 151, and at this time, one end of the first action member 11 away from the extrusion indicating member 13 moves out of the depression 141, so that the first action member 11 moves toward the matching member 31, and at the same time, the matching member 31 is lifted up, and the extrusion indicating member 13 is pushed away from the first mounting hole 121.

[0049] In some embodiments, the recessed portion 141 is formed with an inclined surface, and accordingly, the end of the first action member 11 away from the extrusion indicating member 13 is also formed with an inclined surface, and through the guiding effect of the inclined surface, when the second action member 14 moves along the second mounting hole 151, it is convenient for the first action member 11 to move out of the recessed portion 141. In some embodiments, the cross section of the recessed portion 141 can be an inverted trapezoid.

[0050] In some embodiments, the extrusion device 10 may further include a first force providing member 16. The first force providing member 16 is used to provide a force to the first actuating member 11 to move in the direction of the second actuating member 14, so that the first actuating member 11 can be relatively stably located in the recessed portion 141, and the first actuating member 11 will not be moved out of the recessed portion 141 due to vibration.

[0051] In some embodiments, a recessed portion is provided on one side of the locking iron 20 facing the second actuating member 14, and one end of the second actuating member 14 enters the recessed portion. When the locking iron 20 is displaced, the second actuating member 14 moves along the second mounting hole 151 in a direction away from the locking iron 20 to be removed from the recessed portion 141. In some embodiments, the recessed portion of the locking iron 20 is formed with an inclined surface, and correspondingly, the corresponding end of the second actuating member 14 is also formed with an inclined surface. Through the guiding effect of the inclined surface, when the locking iron 20 is displaced, it is convenient for the second actuating member 14 to be removed from the recessed portion.

[0052] In some embodiments, the recessed portion on the locking iron 20 has the same shape as the recessed portion 141 of the second actuating member 14 .

[0053] See also Figure 1 and Figure 6 In some embodiments, the extrusion device 10 may further include a second force providing member 17. The second force providing member 17 is used to provide a force to the second action member 14 in a direction of movement toward the locking iron 20, so that the second action member 14 can be relatively stably located in the recessed portion and will not be moved out of the recessed portion due to vibration.

[0054] In some embodiments, the first force providing member 16 and the second force providing member 17 may both be compression springs.

[0055] In some embodiments, a step surface is formed at the end of the first actuating member 11 away from the mating member 31, and a step surface is formed on the side of the first mounting hole 121 facing the second mounting hole 151. The first force providing member 16 can be sleeved on an end of the first actuating member 11 close to the second actuating member 14 and abut against the two step surfaces to provide a force for the first actuating member 11 to move in the direction of the second actuating member 14.

[0056] In some embodiments, a step surface is formed on the side of the second actuating member 14 away from the locking iron 20, and the second force providing member 17 can be mounted on the end of the second actuating member away from the locking iron 20, and abut against the step surface and the bottom wall of one side hole of the second mounting hole to provide a force to the second actuating member 14 in the direction of movement toward the locking iron 20.

[0057] See also Figures 4 to 8 The embodiment of the present application also provides a railway switch machine 100, which may include a locking iron 20, two moving contact groups 30, two static contact groups 40 and two extrusion devices 10 provided by any embodiment of the present application, wherein when an extrusion accident occurs, the locking iron 20 will be displaced, and the two extrusion devices 10 are used to make the two moving contact groups 30 respectively in a position where the electrical connection with the two static contact groups 40 is disconnected when the locking iron 20 is displaced.

[0058] In some embodiments, the railway switch machine 100 may further include a mounting frame 60, and the locking iron 20, two movable contact groups 30, two static contact groups 40 and two extrusion devices 10 are mounted on the mounting frame 60. In some embodiments, the mounting frame 60 may be an integrally formed part.

[0059] In some embodiments, the first mounting member 12 , the second mounting member 15 and the mounting frame 60 are integrally formed.

[0060] See also Figure 8In some embodiments, the railway switch machine 100 may further include a connecting rod assembly 70, which may connect the two moving contact groups 30 to prevent the mating parts 31 of the two moving contact groups 30 from flipping outwards and electrically connecting to the outer static contacts 41 after being lifted up by the two first actuating parts 11 respectively.

[0061] In some embodiments, the connecting rod assembly 70 may include an elastic member 71, which is connected to the movable contact frames 32 of the two movable contact groups 30. When the two movable contact groups 30 are pushed apart by the first actuating member 11, the elastic member 71 is stretched, thereby providing a force for the two movable contact frames 32 to rotate inwardly, thereby preventing the two movable contact frames 32 from flipping outwardly. In some embodiments, the elastic member 71 may be a spring.

[0062] In some embodiments, the railway switch machine 100 may also include a disc spring 50, which is arranged above the locking iron 20. The disc spring 50 is arranged so that the locking iron 20 will only be displaced when the locking iron 20 is subjected to a force exceeding a preset range (such as more than tens of kilonewtons), so as to avoid displacement of the locking iron 20 due to vibration caused by the passing of vehicles.

[0063] Regarding the embodiments of the present application, it should also be noted that, in the absence of conflict, the embodiments of the present application and the features therein can be combined with each other to obtain new embodiments.

[0064] The above are only specific implementation methods of the present application, but the protection scope of the present application is not limited thereto. The protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A railway switch extrusion device, the railway switch comprising: The locking iron, the moving contact group and the static contact group, when an extrusion accident occurs, the locking iron will be displaced, and the extrusion device is used to make the moving contact group be in a position where the electrical connection with the static contact group is disconnected when the locking iron is displaced, characterized in that: The extrusion device comprises: a first action member, a first mounting member and an extrusion indicating member, The first mounting member is configured to have a first mounting hole; The first action member is arranged in the first mounting hole, the moving contact group includes a matching member for matching with the first action member, and the first action member is arranged to move along the first mounting hole toward the matching member of the moving contact group when the locking iron is displaced, so as to lift the matching member and disconnect the moving contact group from the static contact group electrically; At least part of the extrusion indicating member is disposed in the first mounting hole. When the first actuating member moves along the first mounting hole toward the mating member of the moving contact group, the extrusion indicating member is pushed away from the first mounting hole by the first actuating member and is retained outside the first mounting hole.

2. The extrusion device according to claim 1, characterized in that: The extrusion indicating member and the first mounting hole are in interference fit.

3. The extrusion device according to claim 1, characterized in that: The extrusion indicating member is formed of an elastic material.

4. The extrusion device according to claim 1, characterized in that: The extrusion indicating member comprises: The plug body is sleeved on the first actuating member and arranged in the first mounting hole, and the plug body is provided with a barb structure.

5. The extrusion device according to claim 4, characterized in that: The extrusion indicating member further comprises: The cover body is connected with the plug body, the cover body is sleeved on the first action piece, and the cover body abuts against the first mounting piece.

6. The extrusion device according to claim 1, characterized in that: The length of the extrusion indicating member is less than the length of the first actuating member extending out of the first mounting hole after the first actuating member moves along the first mounting hole toward the mating member of the moving contact group.

7. The extrusion device according to claim 1, characterized in that: There is a clearance fit between the extrusion indicating member and the first actuating member; and / or The first action member is further formed with a protrusion for driving the extrusion indicating member to move toward the mating member of the moving contact group when the first action member moves along the first mounting hole toward the mating member of the moving contact group.

8. The extrusion device according to claim 1, characterized in that: Also includes: a second actuating member and a second mounting member, wherein the second mounting member is configured to have a second mounting hole; The second actuating member is disposed in the second mounting hole, and is configured to move along the second mounting hole when the locking iron is displaced, thereby driving the first actuating member to move along the first mounting hole toward the mating member of the moving contact group.

9. The extrusion device according to claim 8, characterized in that: Also includes: a first force providing member, for providing a force for the first action member to move in a direction toward the second action member; The second force providing member is used to provide a force to the second action member in a direction of movement of the locking iron.

10. A railway switch machine, characterized in that: include: A locking iron, two moving contact groups, two static contact groups and two extrusion devices as described in any one of claims 1 to 9, wherein the locking iron will be displaced when an extrusion accident occurs, and the two extrusion devices are used to place the two moving contact groups in positions where they are electrically disconnected from the two static contact groups when the locking iron is displaced.

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