Telescopic pedal structure of rail transit vehicle

Abstract

The utility model provides a telescopic pedal structure of a rail transit vehicle. The telescopic pedal structure of the rail transit vehicle comprises a mounting frame, the same movable frame is slidably mounted on the inner walls of the two sides of the mounting frame, a pedal is arranged in the movable frame, a square opening is formed in the outer wall of one side of the mounting frame, and the pedal penetrates through the square opening and is movably connected with the inner wall of the square opening; driven blocks are fixedly mounted on the inner walls of the two sides of the moving frame, the ends, away from each other, of the two driven blocks extend to the two sides of the mounting frame correspondingly, two shaft seats are fixedly mounted on the outer walls of the two sides of the mounting frame correspondingly, and the same lead screw is rotationally mounted on the two corresponding shaft seats; and servo motors are fixedly mounted on the two shaft seats far away from the square opening. The telescopic pedal structure of the rail transit vehicle has the advantages that the height of the pedal can be finely adjusted, the operation is simple, and the adjustment is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of pedals, in particular to a telescopic pedal structure of a rail transit vehicle. Background Art

[0002] Rail transit vehicles refer to vehicles that run along dedicated tracks. Rail transit vehicles are usually a certain distance away from the platform. When the distance between the rail transit vehicle and the platform is large, in order to protect the safety of passengers and improve the passenger experience, retractable pedals are installed in the rail transit vehicle to solve the problem.

[0003] After the telescopic pedal of the prior art rail transit vehicle is installed, its height position is usually fixed. When the telescopic pedal has an installation error and causes it to be too high or too low relative to the platform, it is difficult to fine-tune the pedal.

[0004] Therefore, it is necessary to provide a new telescopic pedal structure for rail transit vehicles to solve the above technical problems. Utility Model Content

[0005] The technical problem solved by the utility model is to provide a telescopic pedal structure for rail transit vehicles, which can finely adjust the height of the pedal, is simple to operate, convenient to adjust, and has small resistance during the extension or retraction of the pedal.

[0006] In order to solve the above technical problems, the telescopic pedal structure of a rail transit vehicle provided by the utility model includes: an installation frame, the same moving frame is slidably installed on the inner walls on both sides of the installation frame, a pedal is arranged in the moving frame, a square opening is opened on the outer wall of one side of the installation frame, the pedal passes through the square opening and is movably connected with the inner wall of the square opening, driven blocks are fixedly installed on the inner walls on both sides of the moving frame, the ends of the two driven blocks away from each other respectively extend to the two sides of the installation frame, two shaft seats are fixedly installed on the outer walls on both sides of the installation frame, the same screw rod is rotatably installed on the corresponding two shaft seats, servo motors are fixedly installed on the two shaft seats away from the square opening, and the two servo motors are The output ends are fixedly connected to one end of the corresponding screw rod, and a plurality of fixed sliding columns are fixedly installed in the moving frame, and the plurality of fixed sliding columns all penetrate the pedal and are slidably connected to the pedal. A plurality of screw rods are fixedly installed on the bottom inner wall of the moving frame, and a plurality of screw rods are threadedly sleeved with screw sleeves, the bottom of the pedal contacts with the tops of the plurality of screw sleeves, and a plurality of fixed rods are fixedly installed on the tops of the plurality of screw sleeves, and the plurality of fixed rods extend to the top of the moving frame, and a plurality of adjusting screws are threadedly installed on the top of the moving frame, and the bottom ends of the plurality of adjusting screws extend into the moving frame and are rotatably sleeved with contact plates, and the bottoms of the plurality of contact plates contact the top of the pedal.

[0007] Preferably, four L-shaped fixing ears distributed in a rectangular array are fixedly mounted on the outer walls on both sides of the installation frame, and two mounting holes are provided on the L-shaped fixing ears.

[0008] Preferably, a plurality of anti-slip convex grooves are provided on the top of the pedal.

[0009] Preferably, the top ends of the plurality of fixing rods and the plurality of adjusting screws are fixedly mounted with hexagonal heads, and the hexagonal heads are provided with inner hexagonal grooves.

[0010] Preferably, a circular ring is rotatably mounted on the fixed rod, an indicator rod is fixedly mounted on the circular ring, a plurality of alignment markers are fixedly mounted on the top of the movable frame, a limited position slide is provided on the alignment marker, one end of the indicator rod away from the circular ring extends into the limited position slide, and is slidably connected to the inner wall of the limited position slide, and a scale is provided on the alignment marker.

[0011] Preferably, wheel grooves are provided on the inner walls on both sides of the installation frame, and four rollers distributed in a rectangular array are rotatably installed on the outer walls on both sides of the movable frame, the outer rings of the four rollers located at the top are in contact with the top inner walls of the corresponding wheel grooves, and the outer rings of the four rollers located at the bottom are in contact with the bottom inner walls of the corresponding wheel grooves.

[0012] Preferably, a ball is movably embedded in a central position on an outer wall of a side of the roller away from the movable frame, and the ball is in contact with an inner wall of a side of the corresponding wheel groove.

[0013] Compared with the related art, the telescopic pedal structure of the rail transit vehicle provided by the utility model has the following beneficial effects:

[0014] The utility model provides a telescopic pedal structure of a rail transit vehicle. The height position of the pedal can be fine-tuned by arranging a moving frame, a fixed sliding column, a screw rod, a screw sleeve, a fixed rod, an adjusting screw and a contact plate, thereby effectively solving the problem of large pedal installation error. In addition, when adjusting the height of the pedal, it is only necessary to screw the fixed rod and the adjusting screw from the top of the moving frame with an open-end wrench or an Allen wrench, and the operation is relatively simple and easy to use. By arranging rollers and balls, the resistance of the moving frame during movement can be effectively reduced, and the smoothness of the pedal during extension or retraction can be improved, which is beneficial to improving the service life of the telescopic pedal structure of the rail transit vehicle. By arranging the alignment mark rod and the indicator rod, the relevant operating personnel can know the height value of the pedal being lifted or lowered in real time, which is beneficial to improving the accuracy and convenience of fine-tuning. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1A structural schematic diagram of a preferred embodiment of a telescopic pedal structure for a rail transit vehicle provided by the utility model;

[0016] Figure 2 for Figure 1 A schematic diagram of the structure of the part shown;

[0017] Figure 3 for Figure 1 The structural schematic diagram of the mobile frame shown;

[0018] Figure 4 for Figure 3 The structural schematic diagram of the fixed rod and the indicator rod in the separated state shown;

[0019] Figure 5 for Figure 3 Schematic diagram of the assembly of the indicator rod and the alignment mark rod shown.

[0020] Numbers in the figure: 1. Installation frame; 2. Moving frame; 3. Driven block; 4. Shaft seat; 5. Screw; 6. Servo motor; 7. Fixed slide column; 8. Pedal; 9. Screw; 10. Screw sleeve; 11. Fixed rod; 12. Adjusting screw; 13. Contact plate; 14. Roller; 15. Alignment mark; 16. Indicator rod; 101. Wheel groove. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0022] Please refer to Figure 1-Figure 5 ,in, Figure 1 A structural schematic diagram of a preferred embodiment of a telescopic pedal structure for a rail transit vehicle provided by the utility model; Figure 2 for Figure 1 A schematic diagram of the structure of the part shown; Figure 3 for Figure 1 The structural schematic diagram of the mobile frame shown; Figure 4 for Figure 3 The structural schematic diagram of the fixed rod and the indicator rod in the separated state shown; Figure 5 for Figure 3The assembly diagram of the indicator rod and the alignment mark rod is shown. The telescopic pedal structure of the rail transit vehicle includes: a mounting frame 1, on the inner walls of both sides of the mounting frame 1, the same moving frame 2 is slidably mounted. Specifically, in order to reduce the resistance encountered by the moving frame 2 when moving, wheel grooves 101 are provided on the inner walls of both sides of the mounting frame 1, and four rollers 14 distributed in a rectangular array are rotatably mounted on the outer walls of both sides of the moving frame 2. The outer rings of the four rollers 14 located at the top are in contact with the top inner walls of the corresponding wheel grooves 101, and the outer rings of the four rollers 14 located at the bottom are in contact with the bottom inner walls of the corresponding wheel grooves 101. Due to the gap between the rollers 14 and the inner walls of the wheel grooves 101, the outer rings of the rollers 14 and the inner walls of the wheel grooves 101 are in contact with each other. It is rolling friction, so the resistance encountered by the moving frame 2 when it moves is smaller, which is conducive to improving the smoothness of the movement of the moving frame 2. A pedal 8 is arranged in the moving frame 2, and a plurality of anti-slip convex grooves are arranged on the top of the pedal 8. A square opening is arranged on the outer wall of one side of the installation frame 1, and the pedal 8 passes through the square opening and is movably connected with the inner wall of the square opening. Driven blocks 3 are fixedly installed on the inner walls of both sides of the moving frame 2, and avoidance openings are arranged on the outer walls of both sides of the installation frame 1. The two avoidance openings are respectively connected with the two wheel grooves 101, and the ends of the two driven blocks 3 that are away from each other respectively pass through the corresponding wheel grooves 101 and extend to the two sides of the installation frame 1. Two shaft seats 4 are fixedly installed on the outer walls of both sides of the installation frame 1, and the same screw rod 5 is rotatably installed on the corresponding two shaft seats 4. Servo motors 6 are fixedly installed on the two shaft seats 4 away from the square mouth, and the output ends of the two servo motors 6 are fixedly connected to one end of the corresponding screw rod 5. A plurality of fixed slide columns 7 are fixedly installed in the moving frame 2, and the plurality of fixed slide columns 7 all penetrate the pedal 8 and are slidably connected to the pedal 8. A plurality of screw rods 9 are fixedly installed on the bottom inner wall of the moving frame 2, and a plurality of screw rods 9 are threadedly sleeved with screw sleeves 10, and the bottom of the pedal 8 contacts the top of the plurality of screw sleeves 10, and the plurality of screw sleeves 1 0 is fixedly installed with a fixing rod 11 on the top, and multiple fixing rods 11 extend to the top of the moving frame 2. A first circular hole is opened on the top of the moving frame 2, and multiple second circular holes are opened on the pedal 8. Multiple fixing rods 11 pass through the corresponding first circular hole and the second circular hole, and are movably connected with the inner walls of the corresponding first circular hole and the second circular hole. A threaded hole is opened on the top of the moving frame 2, and an adjusting screw 12 is threadedly installed in each threaded hole. The bottom ends of the multiple adjusting screws 12 extend into the moving frame 2, and are rotatably sleeved with a contact plate 13, and the bottoms of the multiple contact plates 13 are in contact with the top of the pedal 8.

[0023] In this embodiment, in order to facilitate the fixing of the installation frame 1, four L-shaped fixing ears distributed in a rectangular array are fixedly installed on the outer walls of both sides of the installation frame 1, and two mounting holes are provided on the L-shaped fixing ears.

[0024] In this embodiment, in order to facilitate the use of tools to screw the fixing rods 11 and the adjusting screws 12, the top ends of the fixing rods 11 and the adjusting screws 12 are fixedly mounted with hexagonal heads, and the hexagonal heads are provided with hexagonal grooves.

[0025] In this embodiment, in order to facilitate relevant personnel to determine the adjustment range of the pedal 8, a circular ring is rotatably sleeved on the fixed rod 11, and an indicator rod 16 is fixedly installed on the circular ring. A plurality of alignment markers 15 are fixedly installed on the top of the movable frame 2, and a limited position slide is provided on the alignment marker 15. The end of the indicator rod 16 away from the circular ring extends into the limited position slide and is slidably connected to the inner wall of the limited position slide. The alignment marker 15 is provided with a scale.

[0026] In this embodiment, in order to further reduce the resistance of the moving frame 2 during movement, a ball is movably embedded in the center of the outer wall of the roller 14 away from the moving frame 2 , and the ball contacts the inner wall of the corresponding wheel groove 101 .

[0027] The working principle of the telescopic pedal structure of the rail transit vehicle provided by the utility model is as follows:

[0028] When it is necessary to extend the pedal 8, the two servo motors 6 are started to run, driving the two screw rods 5 to rotate. During the rotation of the two screw rods 5, the corresponding driven blocks 3 are driven to move in the direction of the square opening. Driven by the two driven blocks 3, the moving frame 2 gradually moves in the direction of the square opening. During the movement of the moving frame 2, the eight rollers 14 on both sides of the moving frame 2 will roll, and rolling friction will be generated with the mounting frame 1. The balls on the rollers 14 and the mounting frame 1 will also generate rolling friction. Therefore, the resistance generated during the movement of the moving frame 2 is smaller and smoother. At the same time, due to the above reasons, the service life of the telescopic spreader structure of the rail transit vehicle can also be increased. During the movement of the moving frame 2, the pedal 8 is driven to move, so that the pedal 8 can be extended out of the moving frame 2. When the moving frame 2 contacts the front inner wall of the mounting frame 1, the extended part of the pedal 8 reaches the maximum.

[0029] When there is a gap between the pedal 8 and the surface of the platform after it is extended, or it will hit the side wall of the platform, it means that there is a large error in the installation height of the stall board 8. In this case, the height of the pedal 8 can be adjusted to compensate. Taking the height adjustment of the pedal 8 as an example, first, multiple adjusting screws 12 are screwed counterclockwise with an open-end wrench or an Allen wrench. The adjusting screws 12 will move upward during the counterclockwise rotation, driving the contact plate 13 to move upward until the top of the contact plate 13 is in contact with the top inner wall of the moving frame 2. At this time, the top of the pedal 8 is not restricted, and then one of the fixing rods 11 is screwed counterclockwise with an open-end wrench or an Allen wrench. The fixing rod 11 drives the corresponding screw sleeve 10 to rotate. The screw sleeve 10 will move upward during the counterclockwise rotation. The screw sleeve 10 will push the pedal 8 upward during the rising process, thereby increasing the height of the pedal 8. The indicator rod 16 is driven to move upward. The relevant personnel can determine how high the pedal 8 has been lifted by observing the distance moved by the indicator rod 16 on the alignment mark rod 15. When the pedal 8 is lifted to an appropriate height, the fixing rod 11 is stopped. Thereafter, the nearby adjusting screw 12 is rotated clockwise with an open-end wrench or an Allen wrench until the contact plate 13 at the bottom end of the adjusting screw 12 contacts the pedal 8. In this way, the pedal 8 can be initially fixed. Then, another screw sleeve 10 is adjusted upward until its top contacts the bottom of the pedal 8, and then the nearest contact plate 13 is adjusted downward until the contact plate 13 contacts the top of the pedal 8. The cycle is repeated in sequence until all screw sleeves 10 and contact plates 13 are adjusted. In this way, the top of the pedal 8 is restricted by multiple contact plates 13, and the bottom is restricted by multiple screw sleeves 10, so that its adjusted height position can be maintained.

[0030] Compared with the related art, the telescopic pedal structure of the rail transit vehicle provided by the utility model has the following beneficial effects:

[0031] The utility model provides a telescopic pedal structure of a rail transit vehicle. Through the arrangement of a moving frame 2, a fixed sliding column 7, a screw rod 9, a screw sleeve 10, a fixed rod 11, an adjusting screw 12, and a contact plate 13, the height position of the pedal 8 can be fine-tuned, thereby effectively solving the problem of large pedal installation errors. In addition, when adjusting the height of the pedal 8, it is only necessary to screw the fixed rod 11 and the adjusting screw 12 from the top of the moving frame 2 with an open-end wrench or an Allen wrench, and the operation is relatively simple and easy to use. Through the arrangement of rollers 14 and balls, the resistance of the moving frame 2 during movement can be effectively reduced, and the smoothness of the pedal 8 during extension or retraction can be improved, which is beneficial to improving the service life of the telescopic pedal structure of the rail transit vehicle. Through the arrangement of the alignment mark rod 15 and the indicator rod 16, the relevant operating personnel can know the height value of the pedal 8 being raised or lowered in real time, which is beneficial to improving the accuracy and convenience of fine-tuning.

[0032] 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 telescopic pedal structure for a rail transit vehicle, comprising a mounting frame (1), characterized in that: The same moving frame (2) is slidably mounted on the inner walls on both sides of the installation frame (1), a pedal (8) is arranged inside the moving frame (2), a square opening is opened on the outer wall of one side of the installation frame (1), the pedal (8) passes through the square opening and is movably connected to the inner wall of the square opening, driven blocks (3) are fixedly mounted on the inner walls on both sides of the moving frame (2), and the ends of the two driven blocks (3) that are away from each other extend to the two sides of the installation frame (1), respectively, two shaft seats (4) are fixedly mounted on the outer walls on both sides of the installation frame (1), the same screw rod (5) is rotatably mounted on the corresponding two shaft seats (4), servo motors (6) are fixedly mounted on the two shaft seats (4) away from the square opening, the output ends of the two servo motors (6) are fixedly connected to one end of the corresponding screw rod (5), and the inner wall of the moving frame (2) is fixedly mounted with a servo motor (6). A plurality of fixed slide columns (7) are fixedly installed, and the plurality of fixed slide columns (7) all penetrate the pedal (8) and are slidably connected to the pedal (8). A plurality of screw rods (9) are fixedly installed on the inner wall of the bottom of the moving frame (2), and the plurality of screw rods (9) are threadedly sleeved with screw sleeves (10). The bottom of the pedal (8) contacts the top of the plurality of screw sleeves (10), and the top of the plurality of screw sleeves (10) are fixedly installed with fixed rods (11), and the plurality of fixed rods (11) extend to the top of the moving frame (2). A plurality of adjusting screw rods (12) are threadedly installed on the top of the moving frame (2), and the bottom ends of the plurality of adjusting screw rods (12) extend into the moving frame (2) and are rotatably sleeved with contact plates (13), and the bottoms of the plurality of contact plates (13) contact the top of the pedal (8).

2. The telescopic pedal structure of a rail transit vehicle according to claim 1, characterized in that: Four L-shaped fixing ears distributed in a rectangular array are fixedly mounted on the outer walls on both sides of the installation frame (1), and two mounting holes are provided on the L-shaped fixing ears.

3. The telescopic pedal structure of a rail transit vehicle according to claim 1, characterized in that: The top of the pedal (8) is provided with a plurality of anti-slip convex grooves.

4. The telescopic pedal structure of a rail transit vehicle according to claim 1, characterized in that: The top ends of the plurality of fixing rods (11) and the plurality of adjusting screw rods (12) are all fixedly mounted with hexagonal heads, and the hexagonal heads are provided with inner hexagonal grooves.

5. The telescopic pedal structure of a rail transit vehicle according to claim 1, characterized in that: A circular ring is rotatably sleeved on the fixed rod (11), an indicating rod (16) is fixedly mounted on the circular ring, a plurality of alignment rods (15) are fixedly mounted on the top of the movable frame (2), a limited position slideway is provided on the alignment rods (15), one end of the indicating rod (16) away from the circular ring extends into the limited position slideway and is slidably connected to the inner wall of the limited position slideway, and a scale is provided on the alignment rod (15).

6. The telescopic pedal structure of a rail transit vehicle according to claim 1, characterized in that: Wheel grooves (101) are provided on both inner walls of the installation frame (1), and four rollers (14) distributed in a rectangular array are rotatably mounted on both outer walls of the movable frame (2), the outer rings of the four rollers (14) located at the top are in contact with the top inner walls of the corresponding wheel grooves (101), and the outer rings of the four rollers (14) located at the bottom are in contact with the bottom inner walls of the corresponding wheel grooves (101).

7. The telescopic pedal structure of a rail transit vehicle according to claim 6, characterized in that: A ball is movably embedded at a central position on an outer wall of a side of the roller (14) away from the movable frame (2), and the ball is in contact with an inner wall of a side of the corresponding wheel groove (101).

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