Equipment box cover limiting and fixing assembly of rail transit vehicle

Abstract

The utility model provides an equipment box cover limiting and fixing assembly of a rail transit vehicle. Relates to the technical field of rail transit auxiliary tools. The equipment box cover limiting and fixing assembly of the rail transit vehicle comprises a bearing plate, a first n-shaped frame and a second n-shaped frame are fixedly installed on the two sides of the bearing plate correspondingly, a two-way screw is rotatably installed in the first n-shaped frame, and two linkage plates are installed on the two-way screw in a threaded mode; connecting strips are fixedly mounted on the sides, away from each other, of the two linkage plates, transverse tables are fixedly mounted on the sides, away from each other, of the two connecting strips, n-shaped frames are fixedly mounted on the sides, close to each other, of the two transverse tables, and rotating shafts are rotatably mounted in the two n-shaped frames; and the two rotating shafts are fixedly sleeved with tooth-missing gears. The utility model has the advantages that the box cover can be prevented from falling off or being opened, and the limiting effect is better.

Description

Technical Field

[0001] The utility model relates to the technical field of rail transit auxiliary tools, in particular to a limit fixing component for an equipment box cover of a rail transit vehicle. Background Art

[0002] In rail trains, the electrical parts are mainly installed in the carriage in the form of screens, cabinets and boxes, or are suspended and fixed on the bottom frame of the car body. In order to make the best use of the carriage space, most of the electrical cabinets are installed under the car body. Therefore, the covers of these electrical cabinets are basically exposed outside.

[0003] However, during the long-term operation of the train, these box covers may fall off due to loose screws, or the box covers may be opened due to damaged door locks, which may bring relatively serious adverse consequences to the running train.

[0004] Therefore, it is necessary to provide a new limit fixing component for the equipment box cover of a rail transit vehicle to solve the above technical problems. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a limit fixing component for an equipment box cover of a rail transit vehicle, which can prevent the box cover from falling off or being opened and has a good limiting effect.

[0006] To solve the above technical problems, the limit fixing component for the equipment box cover of a rail transit vehicle provided by the utility model includes: a bearing plate, on both sides of which a U-shaped frame one and a U-shaped frame two are respectively and fixedly installed. A bidirectional screw is rotatably installed in the U-shaped frame one. Two linkage plates are threadedly installed on the bidirectional screw. On one side of each of the two linkage plates away from each other, a connecting strip is fixedly installed. On one side of each of the two connecting strips away from each other, a cross platform is fixedly installed. On one side of each of the two cross platforms close to each other, a U-shaped frame is fixedly installed. A rotating shaft is rotatably installed in each of the two U-shaped frames. A toothless gear is fixedly sleeved on each of the two rotating shafts. An extension arm is fixedly installed on each of the two toothless gears. A unidirectional screw one is threadedly installed on each of the two extension arms. One end of each of the two unidirectional screws one is rotatably installed with a pressing strip.

[0007] Preferably, an adapter rod is slidably installed on each of the two connecting strips. On one end of each of the two adapter rods close to the U-shaped frame, a tooth bar is fixedly installed. One side of each of the two tooth bars extends into the corresponding U-shaped frame and meshes with the corresponding toothless gear.

[0008] Preferably, a frame body is arranged in the U-shaped frame two. Two movable rods are slidably installed in the frame body. One end of each of the two movable rods away from each other extends outside the U-shaped frame two and is fixedly connected to the corresponding adapter rod, and the movable rod is movably connected to the U-shaped frame two.

[0009] Preferably, a one-way screw rod II is threadedly installed on one side of the C-shaped frame II away from the bearing plate, and one end of the one-way screw rod II close to the bearing plate is rotatably connected to the frame body.

[0010] Preferably, a motor is fixedly installed on the top of the C-shaped frame I, the output shaft of the motor is fixedly connected to the top end of the bidirectional screw rod, and two limiting rods I are fixedly installed inside the C-shaped frame I. The two limiting rods I penetrate through the two linkage plates and are slidably connected to the two linkage plates.

[0011] Preferably, limiting rods II are slidably installed on both of the two extension arms, and the same-direction ends of the two limiting rods II are respectively fixedly connected to the two pressing strips.

[0012] Preferably, movable openings are formed in both the top and bottom of the C-shaped frame II, the two movable rods respectively penetrate through the two movable openings, a limiting rod III is slidably installed on one side of the C-shaped frame II away from the bearing plate, and one end of the limiting rod III close to the bearing plate is fixedly connected to the frame body.

[0013] Compared with the related art, the equipment box cover limit fixing assembly of the rail transit vehicle provided by the present utility model has the following beneficial effects:

[0014] The present utility model provides an equipment box cover limit fixing assembly for a rail transit vehicle. By arranging the pressing strips on the two extension arms, the pressing strips can be made to abut against the front of the box cover by rotating the one-way screw rod I, so that a good limit fixing effect can be achieved on the box cover, ensuring the driving process of the train. Moreover, the distance between the two extension arms can be adjusted according to the height of the equipment box to ensure that the two pressing strips can always press the edges of the top and bottom of the box cover, which facilitates people to open the box cover for maintenance and repair of the components inside the box body, and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of a preferred embodiment of the equipment box cover limit fixing assembly for a rail transit vehicle provided by the present utility model;

[0016] Figure 2 is a rear view three-dimensional structural diagram of the present utility model;

[0017] Figure 3 is a front view planar structural diagram of the present utility model;

[0018] Figure 4 is a sectional structural diagram of the U-shaped frame in the present utility model.

[0019] Numbers in the figure: 1. Load-bearing plate; 2. Profile frame 1; 3. Bidirectional screw; 4. Linkage plate; 5. Connecting strip; 6. Cross table; 7. Profile frame; 8. Rotating shaft; 9. Gear wheel with missing teeth; 10. Extension arm; 11. One-way screw 1; 12. Pressure strip; 13. Profile frame 2; 14. Frame; 15. Movable rod; 16. Connecting rod; 17. Toothed strip; 18. One-way screw 2. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0021] Please refer to Figure 1-Figure 4 ,in, Figure 1 A structural schematic diagram of a preferred embodiment of a device box cover limiting and fixing assembly for a rail transit vehicle provided by the utility model; Figure 2 It is a rear-view stereoscopic structural schematic diagram of the utility model; Figure 3 It is a front view planar structural schematic diagram of the utility model; Figure 4 It is a schematic diagram of the cross-sectional structure of the frame in the utility model. The equipment box cover limit fixing assembly of the rail transit vehicle includes: a bearing plate 1, a connecting plate metal is installed on the inner side of the bearing plate 1, and a mounting hole is opened on it to facilitate fixing the bearing plate 1 in a specified position, and a frame 1 2 and a frame 2 13 are fixedly installed on both sides of the bearing plate 1, a bidirectional screw 3 is rotatably installed in the frame 1 2, and a motor is fixedly installed on the top of the frame 1 2, and its output shaft is fixedly connected to the top of the bidirectional screw 3, and two linkage plates 4 are threadedly installed on the bidirectional screw 3, and two limit rods 1 are fixedly installed in the frame 1 2, and the two limit rods 1 pass through the two linkage plates 4 and are slidably connected to the two linkage plates 4, so that the movement trajectory of the linkage plates 4 can be guaranteed, and the two linkage plates 4 can be moved in a certain direction. A connecting strip 5 is fixedly installed on the side away from each other, a cross platform 6 is fixedly installed on the side where the two connecting strips 5 are away from each other, a shaped frame 7 is fixedly installed on the side where the two cross platforms 6 are close to each other, a rotating shaft 8 is rotatably installed in the two shaped frames 7, a missing tooth gear 9 is fixedly sleeved on the two rotating shafts 8, an extension arm 10 is fixedly installed on the two missing tooth gears 9, a one-way screw 11 is threadedly installed on the two extension arms 10, a pressure strip 12 is rotatably installed on one end of the two one-way screws 11, and a limiting rod 2 is slidably installed on the two extension arms 10, and the same-direction ends of the two limiting rods 2 are respectively fixedly connected to the two pressure strips 12, which limit the pressure strip 12 so that it will not rotate with the one-way screw 11.

[0022] In the above manner, in order to drive the missing tooth gear 9 to rotate so as to rotate the extension arm 10 out from the front of the box cover, a connecting rod 16 is slidably installed on the two connecting bars 5, and a toothed bar 17 is fixedly installed on one end of the two connecting rods 16 close to the shaped frame 7. One side of the two toothed bars 17 extends into the two shaped frames 7 respectively and meshes with the corresponding missing tooth gear 9. In addition, a frame 14 is provided in the shaped frame 13, and two movable rods 15 are slidably installed in the frame 14. The ends of the two movable rods 15 that are away from each other extend to the outside of the shaped frame 13 and mesh with the corresponding connecting rods. The rod 16 is fixedly connected, and the movable rod 15 is movably connected to the molded frame 13. A one-way screw 18 is threadedly installed on the side of the molded frame 13 away from the load-bearing plate 1. The end of the one-way screw 18 close to the load-bearing plate 1 is rotatably connected to the frame 14, and a limiting rod 3 is slidably installed on the side of the molded frame 13 away from the load-bearing plate 1. The end of the limiting rod 3 close to the load-bearing plate 1 is fixedly connected to the frame 14. In this way, the tooth bar 17 can be moved horizontally by rotating the one-way screw 18, thereby driving the missing tooth gear 9 to rotate, and finally bringing the extension arm 10 out from the front of the box cover.

[0023] In the above method, the movable rod 15 and the mold frame 13 are movable by opening movable openings at the top and bottom of the mold frame 13, and the two movable rods 15 are respectively passed through the two movable openings, so that there will be no interference between the movable rod 15 and the mold frame 13.

[0024] The working principle of the equipment box cover limit fixing assembly of the rail transit vehicle provided by the utility model is as follows:

[0025] When the cover of the equipment box is limited and fixed, the bearing plate 1 is first installed on the bottom frame of the train, and the two extension arms 10 are placed in front of the cover, and the overall height of the equipment box is smaller than the minimum spacing between the two tooth-missing gears 9. At this time, the two pressure strips 12 are facing the cover but not in contact with it. Then, the two one-way screws 11 are rotated to move the two pressure strips 12 toward the cover until they collide with the cover, so that the cover can be limited and fixed.

[0026] When it is necessary to open the box cover to inspect and maintain the components inside the equipment box, in order to prevent the pressure strip 12 from hindering the opening of the box cover, the two one-way screws 11 can be rotated counterclockwise to separate the pressure strip 12 from the box cover, and then the one-way screw 2 18 can be rotated clockwise, and the frame 14 will move in the direction of the carrying plate 1, and then the two connecting rods 16 can be driven to make the two toothed bars 17 move horizontally. During the movement, the meshing mode of the toothed bars 17 and the missing tooth gear 9 can be used to drive the two missing tooth gears 9 to rotate. At this time, the two extension arms 10 start to rotate until the extension arms 10 rotate to a horizontal state with the horizontal platform 6, and then the one-way screw 2 18 stops rotating. At this time, there is no obstacle in front of the box cover, and then it can be opened for inspection and maintenance;

[0027] In later use, when it is necessary to limit the use of a higher equipment box, the distance between the two extension arms 10 can be adjusted according to the height of the equipment box. During adjustment, the motor is started, and its output shaft drives the bidirectional screw 3 to rotate. Through the sliding relationship between the movable rod 15 and the frame 14, the two linkage plates 4 move away from each other, and then can move with the horizontal platform 6. At this time, the distance between the two extension arms 10 gradually increases until the minimum distance between the two tooth-missing gears 9 is greater than the overall height of the equipment box. Then the motor is turned off, and the box cover can be limited and fixed.

[0028] Compared with the related art, the equipment box cover limit fixing assembly for rail transit vehicles provided by the utility model has the following beneficial effects:

[0029] The utility model provides a limiting and fixing component for an equipment box cover of a rail transit vehicle. By arranging a pressure strip 12 on two extension arms 10, the pressure strip 12 can be made to contact the front of the box cover by rotating a one-way screw rod 11, so that the box cover can be effectively limited and fixed, and the travel process of the train can be guaranteed. In addition, the spacing between the two extension arms 10 can be adjusted according to the height of the equipment box to ensure that the two pressure strips 12 can always press the top and bottom edges of the box cover, so that people can open the box cover conveniently to inspect and maintain the components inside the box body, and the utility model has a wide range of applications.

[0030] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A limiting and fixing assembly for a device box cover of a rail transit vehicle, comprising a bearing plate, characterized in that: On both sides of the bearing plate, a U-shaped frame one and a U-shaped frame two are respectively and fixedly installed. A bidirectional screw rod is rotatably installed in the U-shaped frame one. Two linkage plates are threadedly installed on the bidirectional screw rod. On the side of each of the two linkage plates away from each other, a connecting bar is fixedly installed. On the side of each of the two connecting bars away from each other, a transverse platform is fixedly installed. On the side of each of the two transverse platforms close to each other, a U-shaped frame is fixedly installed. A rotating shaft is rotatably installed in each of the two U-shaped frames. A toothless gear is fixedly sleeved on each of the two rotating shafts. An extension arm is fixedly installed on each of the two toothless gears. A unidirectional screw rod one is threadedly installed on each of the two extension arms. One end of each of the two unidirectional screw rod ones is rotatably installed with a pressing strip.

2. The equipment box cover limiting and fixing assembly for rail transit vehicles according to claim 1, characterized in that: An adapter bar is slidably installed on each of the two connecting bars. At one end of each of the two adapter bars close to the U-shaped frame, a toothed bar is fixedly installed. One side of each of the two toothed bars extends into each of the two U-shaped frames respectively and meshes with the corresponding toothless gear.

3. The equipment box cover limiting and fixing assembly for rail transit vehicles according to claim 2, characterized in that: A frame body is arranged in the U-shaped frame two. Two movable rods are slidably installed in the frame body. One end of each of the two movable rods away from each other extends outside the U-shaped frame two and is fixedly connected to the corresponding adapter bar, and the movable rod is movably connected to the U-shaped frame two.

4. The equipment box cover limiting and fixing assembly for rail transit vehicles according to claim 3, characterized in that: A unidirectional screw rod two is threadedly installed on the side of the U-shaped frame two away from the bearing plate. One end of the unidirectional screw rod two close to the bearing plate is rotatably connected to the frame body.

5. The equipment box cover limiting and fixing assembly for rail transit vehicles according to claim 1, characterized in that: A motor is fixedly installed on the top of the U-shaped frame one. The output shaft of the motor is fixedly connected to the top end of the bidirectional screw rod. Two limiting rods one are fixedly installed in the U-shaped frame one. The two limiting rods one penetrate through the two linkage plates and are slidably connected to the two linkage plates.

6. The equipment box cover limiting and fixing assembly for rail transit vehicles according to claim 1, characterized in that: Two limiting rods two are slidably installed on each of the two extension arms. The same-direction ends of the two limiting rods two are respectively fixedly connected to the two pressing strips.

7. The equipment box cover limiting and fixing assembly for rail transit vehicles according to claim 3, characterized in that: An activity opening is formed in both the top and bottom of the U-shaped frame two. The two movable rods respectively penetrate through the two activity openings. A limiting rod three is slidably installed on the side of the U-shaped frame two away from the bearing plate. One end of the limiting rod three close to the bearing plate is fixedly connected to the frame body.

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