Movable foot stepping plate tool for metro vehicle maintenance

Abstract

The movable foot stepping plate tool for metro vehicle maintenance comprises a box-shaped foot stepping plate with the right side open, a threaded transverse drive expansion increasing assembly is rotationally installed on the inner wall of the left side of the box-shaped foot stepping plate, and the right side of the threaded transverse drive expansion increasing assembly extends out of the box-shaped foot stepping plate and is fixedly connected with a connecting base. And an output shaft of the driving motor is fixedly connected with the threaded transverse-drive increasing and expanding assembly, and the driving motor is fixedly mounted on the left side of the box-shaped foot plate. By arranging a series of structures, personnel can conveniently and easily move the whole device in metro vehicle maintenance work, the pedal ferry supporting area can be conveniently and flexibly expanded and adjusted according to use requirements, the size can be reduced after use so as to reduce the occupied area, the use flexibility is improved, and the maintenance cost is reduced. And automatic pressure control and precise braking after moving are facilitated, manual operation and alignment by personnel are not needed for pulling, inserting and braking, the fixing automation degree and the use convenience are improved, and personnel use is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of rail vehicle maintenance auxiliary equipment, in particular to a movable subway vehicle maintenance step board tooling. Background Art

[0002] When a rail vehicle is being repaired, the operator needs to straddle the two sides of the track with his legs, which is dangerous and difficult to operate. Therefore, a fixed repair step is used in the prior art. Since the tooling is heavy, the operator needs to move it constantly during maintenance, which consumes the operator's physical strength. In this regard, after searching, Publication No. CN217669361U discloses a movable subway vehicle repair step tooling, including a load-bearing welded steel pipe and a patterned steel plate. The side of the patterned steel plate is provided with an installation groove, and the load-bearing welded steel pipe is arranged in the installation groove of the patterned steel plate. A plurality of connecting pieces are provided on the front and rear sides of the bottom surface of the patterned steel plate, the connecting pieces are rotatably connected to a driving rod, both ends of the driving rod are provided with walking wheels, and the patterned steel plate is provided with a brake plug rod; the movable subway vehicle maintenance step board tooling is to put the driving rod into the connecting piece, install the walking wheel on the driving rod, and after the assembly is completed, the driving rod has a pin, and the brake plug rod is inserted from the patterned steel plate pedal and extended after the driving rod to achieve a braking effect. The movable subway vehicle maintenance step board tooling can increase work efficiency, save physical strength, and make it more convenient for the operator to work forward and backward.

[0003] The above technology discloses a movable subway vehicle maintenance step board tooling, which is convenient for easy and flexible movement in subway vehicle maintenance step board applications by arranging four running wheels at the bottom, and can be fixed after moving by arranging a pluggable brake rod. However, it still has the following shortcomings: 1. The length of the entire step board is fixed, and it cannot be flexibly expanded and adjusted according to usage requirements. Directly using a large-area step board will take up a large space when not in use; 2. The method of manually pulling out and plugging the brake rod for alignment operation after moving, the degree of fixation automation and convenience are not ideal; in view of this, we propose a movable subway vehicle maintenance step board tooling to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a movable subway vehicle maintenance step board tooling to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a movable subway vehicle maintenance step board tooling, comprising a box-shaped step board with an opening on the right side, a threaded horizontal drive expansion component is rotatably installed on the left inner wall of the box-shaped step board, the right side of the threaded horizontal drive expansion component extends to the outside of the box-shaped step board and is fixedly connected to a connecting seat, a driving motor whose output shaft is fixedly installed on the left side of the box-shaped step board and is fixedly connected to the threaded horizontal drive expansion component, the threaded horizontal drive expansion component is used to drive the connecting seat to move right and left to telescopically adjust the support width when the driving motor is started, and the box-shaped step board is used for personnel to step on and perform support work during subway vehicle maintenance work;

[0006] Two telescopic rotating support assemblies are rotatably installed between the bottom of the box-shaped step board and the bottom of the connecting seat, and both ends of the two telescopic rotating support assemblies are fixedly connected to running wheels. A circular sleeve is fixedly provided on the telescopic rotating support assembly located on the front side, and the telescopic rotating support assembly is used to perform rotation support without affecting the close or repulsive movement of the running wheels on both sides;

[0007] A pressure-controlled brake fixing component is embedded and fixed on the bottom of the box-shaped step board. The pressure-controlled brake fixing component is located above the circular sleeve and matches with the circular sleeve. The pressure-controlled brake fixing component is used for pressure-controlled brake fixing of the circular sleeve.

[0008] Preferably, the threaded transverse drive expansion component includes a screw rod rotatably installed on the left inner wall of the box-shaped treadle plate, a rectangular expansion plate is provided in a sliding sleeve inside the box-shaped treadle plate, the rectangular expansion plate is threadedly sleeved on the screw rod, the right side of the rectangular expansion plate extends outside the box-shaped treadle plate and is fixedly connected to the left side of the connecting seat, and the left end of the screw rod is fixedly connected to the right end of the output shaft of the driving motor; the driving motor is used to drive the screw rod to rotate, and the rotation of the screw rod drives the rectangular expansion plate to move right and left, and the rectangular expansion plate drives the connecting seat to move right and left to perform expansion and contraction support work.

[0009] Preferably, the telescopic rotating support assembly includes a rotating shaft rotatably installed at the bottom of the box-shaped step board, and two square rods are rotatably installed at the bottom of the connecting seat. The right ends of the two rotating shafts are provided with square holes, and the square rods are slidably sleeved in the corresponding square holes. The right ends of the two square rods are respectively fixedly connected to the left sides of the two walking wheels on the right side, and the left ends of the two rotating shafts are respectively fixedly connected to the right sides of the two walking wheels on the left side, and the circular sleeve is fixedly sleeved on the front rotating shaft; the principle that the square rods can slide horizontally inside the rotating shaft through the square holes is utilized to realize the rotating support work without affecting the close or repulsive movement of the walking wheels on both sides, and when the walking wheels rotate, the circular sleeves will be driven to rotate through the corresponding rotating shafts.

[0010] Preferably, the pressure-controlled brake fixing component includes an electric push rod embedded and fixed at the bottom of the box-shaped pedal board, a brake block is arranged above the circular sleeve, a pressure plate is fixedly connected to the top of the brake block, a pressure sensor is embedded and fixed to the top of the pressure plate, the top of the pressure sensor is fixedly connected to the protruding end of the electric push rod, and a controller is fixedly connected to the right side of the electric push rod, and the pressure sensor and the electric push rod are electrically connected to the controller; the electric push rod is used to drive the pressure plate to move downward through the pressure sensor, and the pressure plate drives the brake block to squeeze the circular sleeve, and the pressure sensor detects the extrusion force applied and controls the electric push rod to close through the controller when the preset pressure is reached, thereby achieving the effect of automatic pressure-controlled brake fixing of the circular sleeve.

[0011] Preferably, the top of the box-shaped step board and the connecting seat on one side that repel each other are fixedly connected with two hanging rings.

[0012] Preferably, a battery is fixedly installed at the bottom of the box-shaped step board, the drive motor, the electric push rod and the controller are all electrically connected to the battery, and a wireless remote control switch is fixed and electrically connected to the front side of the electric push rod.

[0013] Preferably, a thread groove threadably connected to the screw rod is provided on the left side of the rectangular expansion plate.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. This movable subway vehicle maintenance step board tooling, through the cooperation of the provided running wheels, the telescopic rotating support assembly, the box-shaped step board and the connecting seat, facilitates personnel to easily move the entire device during subway vehicle maintenance work, and utilizes the box-shaped step board for personnel to step on and perform support work during subway vehicle maintenance work;

[0016] 2. This movable subway vehicle maintenance step board tooling can flexibly expand and contract the step board support area according to the use requirements through the cooperation of the telescopic rotating support component, the box-shaped step board, the connecting seat, the driving motor and the threaded horizontal drive expansion component, and can shrink the volume after use to reduce the occupied area, thereby improving the flexibility of use;

[0017] 3. This movable subway vehicle maintenance step tooling, through the coordination of the telescopic rotating support component, the pressure-controlled brake fixing component and the round sleeve, can automatically control the pressure and accurately brake after moving, without the need for manual alignment and insertion and removal of the brake, thereby improving the degree of fixation automation and ease of use.

[0018] The utility model is provided with a series of structures, which makes it convenient for personnel to move the entire device easily during subway vehicle maintenance work, and is convenient for flexible expansion and extension of the step support area according to use requirements. It can also shrink the volume after use to reduce the occupied area, thereby improving the flexibility of use, facilitating automatic pressure control and precise braking after movement, and eliminating the need for manual alignment, plugging and unplugging of the brakes, thereby improving the degree of fixation automation and convenience of use, and making it convenient for personnel to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the main structure of a movable subway vehicle maintenance step board tooling proposed by the utility model;

[0020] Figure 2 This is a schematic cross-sectional structure diagram of a movable subway vehicle maintenance step tooling device proposed by the utility model;

[0021] Figure 3 For the utility model Figure 2 A schematic diagram of the enlarged structure of part A in the figure.

[0022] In the figure: 1. Box-shaped step board; 2. Rectangular expansion plate; 3. Screw; 4. Drive motor; 5. Connecting seat; 6. Square rod; 7. Rotating shaft; 8. Traveling wheel; 9. Round sleeve; 10. Electric push rod; 11. Controller; 12. Pressing plate; 13. Brake block; 14. Pressure sensor; 15. Lifting ring; 16. Third bearing; 17. Second bearing. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] like Figures 1 to 3As shown, a movable subway vehicle maintenance step board tooling proposed in this embodiment includes a box-shaped step board 1 with an opening on the right side, a threaded horizontal drive expansion component is rotatably installed on the left inner wall of the box-shaped step board 1, the right side of the threaded horizontal drive expansion component extends to the outside of the box-shaped step board 1 and is fixedly connected to a connecting seat 5, a driving motor 4 with an output shaft fixedly connected to the threaded horizontal drive expansion component is fixedly installed on the left side of the box-shaped step board 1, two lifting rings 15 are fixedly connected to the top of the side where the box-shaped step board 1 and the connecting seat 5 repel each other, and the provided lifting ring 15 is used to connect with the lifting rope of the external lifting equipment when lifting is required, and the threaded horizontal drive expansion component is used to drive the connecting seat 5 to move right and left to telescopically adjust the support width when the driving motor 4 is started, and the box-shaped step board 1 is used for personnel to step on and perform support work during subway vehicle maintenance work;

[0025] Two telescopic rotating support assemblies are rotatably installed between the bottom of the box-shaped step board 1 and the bottom of the connecting seat 5. Both ends of the two telescopic rotating support assemblies are fixedly connected with walking wheels 8. A circular sleeve 9 is fixed on the telescopic rotating support assembly located on the front side. The telescopic rotating support assembly is used to provide rotational support without affecting the close or repulsive movement of the walking wheels 8 on both sides; a pressure-controlled brake fixing assembly is embedded and fixed at the bottom of the box-shaped step board 1. The pressure-controlled brake fixing assembly is located above the circular sleeve 9 and cooperates with the circular sleeve 9. The pressure-controlled brake fixing assembly is used to control the pressure and fix the circular sleeve 9.

[0026] Specifically, the threaded transverse drive expansion component includes a screw 3 rotatably mounted on the left inner wall of the box-shaped step board 1, wherein a rotation hole is opened on the left inner wall of the box-shaped step board 1, and a first bearing is fixedly sleeved in the rotation hole. The inner ring of the first bearing is fixedly sleeved with the outer side of the screw 3, which plays the effect of rotating the screw 3. The box-shaped step board 1 is internally slidably sleeved with a rectangular expansion plate 2, and the rectangular expansion plate 2 is threadedly sleeved on the screw 3, wherein a thread groove threadably connected to the screw 3 is opened on the left side of the rectangular expansion plate 2, and the screw 3 is used to rotate the screw 3. The threaded connection relationship with the thread groove facilitates the right-left displacement of the rectangular expansion plate 2 when the screw 3 rotates. The right side of the rectangular expansion plate 2 extends to the outside of the box-shaped stepping plate 1 and is fixedly connected to the left side of the connecting seat 5. The left end of the screw 3 is fixedly connected to the right end of the output shaft of the driving motor 4. The set screw 3 and the rectangular expansion plate 2 cooperate, and the driving motor 4 is used to drive the screw 3 to rotate. The rotation of the screw 3 drives the rectangular expansion plate 2 to move right and left, and the rectangular expansion plate 2 drives the connecting seat 5 to move right and left to perform the expansion and contraction support work.

[0027] Furthermore, the telescopic rotating support assembly includes a rotating shaft 7 rotatably installed at the bottom of the box-shaped step board 1, wherein the bottom of the box-shaped step board 1 is rectangular and fixedly connected with four first support rods, the bottom end of the first support rod is fixedly connected with a second bearing 17, the outer side of the rotating shaft 7 is fixedly fitted with the inner rings of the two corresponding second bearings 17, which plays the effect of rotatably installing the rotating shaft 7, and the bottom of the connecting seat 5 is rotatably installed with two square rods 6, wherein the bottom of the connecting seat 5 is fixedly connected with two second support rods, the bottom end of the second support rod is fixedly connected with a third bearing 16, the inner side of the inner ring of the third bearing 16 is fixedly connected with the outer side of the corresponding square rod 6, which plays the effect of rotatably installing the other rods. 6 Rotational installation effect, square holes are opened at the right ends of the two rotating shafts 7, the square rods 6 are slidably sleeved in the corresponding square holes, the right ends of the two square rods 6 are respectively fixedly connected to the left sides of the two walking wheels 8 on the right side, the left ends of the two rotating shafts 7 are respectively fixedly connected to the right sides of the two walking wheels 8 on the left side, and the round sleeves 9 are fixedly sleeved on the rotating shafts 7 on the front side; the rotating shafts 7, square rods 6 and square holes are matched, and the square rods 6 can slide horizontally inside the rotating shafts 7 through the square holes to realize the rotation support work without affecting the close or repulsive movement of the walking wheels 8 on both sides. When the walking wheels 8 rotate, the round sleeves 9 will be driven to rotate through the corresponding rotating shafts 7.

[0028] Furthermore, the pressure-controlled brake assembly includes an electric push rod 10 embedded and fixed at the bottom of the box-shaped pedal board 1, wherein an embedding groove is provided at the bottom of the box-shaped pedal board 1, and the top inner wall of the embedding groove is fixedly connected to the top of the electric push rod 10. The electric push rod 10 is embedded and fixed to the bottom of the box-shaped pedal board 1 through the embedding groove. A brake block 13 is provided above the circular sleeve 9, and a pressure plate 12 is fixedly connected to the top of the brake block 13. A pressure sensor 14 is embedded and fixed to the top of the pressure plate 12, and the top of the pressure sensor 14 is fixedly connected to the protruding end of the electric push rod 10. A controller 11 is fixedly connected to the right side of the electric push rod 10, and the pressure sensor 14 and the electric push rod 10 are both electrically connected to the controller 11. A battery is fixedly installed at the bottom of the box-shaped pedal board 1, and a drive motor 4. The electric push rod 10 and the controller 11 are electrically connected to the battery, which serves to power the drive motor 4, the electric push rod 10 and the controller 11. A wireless remote control switch is fixed and electrically connected to the front side of the electric push rod 10, wherein the wireless remote control switch is matched with an external remote control; the set electric push rod 10, the pressure sensor 14, the pressure plate 12, the brake block 13 and the controller 11 cooperate, and the electric push rod 10 drives the pressure plate 12 to move downward through the pressure sensor 14, and the pressure plate 12 drives the brake block 13 to squeeze the circular sleeve 9. The pressure sensor 14 detects the extrusion force applied and controls the electric push rod 10 to close through the controller 11 when the preset pressure is reached, thereby realizing the effect of automatic pressure control and braking of the circular sleeve 9, thereby further realizing the effect of braking the walking wheel 8.

[0029] The method of using this embodiment is as follows: four running wheels 8 are used for support at the bottom, so that personnel can easily move the entire device during subway vehicle maintenance work. When moving, the four running wheels 8 rotate at the bottom and drive the two rotating shafts 7 and the two square rods 6 to rotate synchronously. The closing pressure value of the electric push rod 10 is pre-set using the controller 11 according to the braking requirements. When it moves to a suitable position, personnel control the electric push rod 10 to start forward. The electric push rod 10 drives the pressure plate 12 to move downward through the pressure sensor 14. The pressure plate 12 drives the brake block 13 to squeeze the circular sleeve 9. The brake block 13 is used to The friction force with the round sleeve 9 is used to brake and stop the vehicle. The pressure sensor 14 detects the extrusion force applied by the electric push rod 10 and transmits the pressure value to the controller 11. When the preset pressure value is reached, the controller 11 controls the electric push rod 10 to automatically close, so as to achieve the effect of automatic pressure control and braking of the round sleeve 9. In this way, the effect of pressure control and braking of the running wheel 8 is further achieved through the rotating shaft 7. There is no need for personnel to manually align and pull out the brake, which improves the degree of automation and convenience of use. After fixing, the box-shaped step board 1 and the connecting seat 5 can be used for personnel to step on and support work during the maintenance of subway vehicles;

[0030] When it is necessary to increase the supporting area of ​​the step board during use, the drive motor 4 is started in the forward direction to drive the screw 3 to rotate. The rotation of the screw 3 drives the rectangular expansion plate 2 to slide to the right in the box-shaped step board 1, and the rectangular expansion plate 2 drives the connecting seat 5 to move to the right. The connecting seat 5 drives the two square rods 6 to slide to the right in the corresponding square holes respectively, and the square rod 6 drives the right walking wheel 8 to move to the right. At this time, the total step board support area formed by the box-shaped step board 1, the rectangular expansion plate 2 and the connecting seat 5 is increased. After adjustment, the drive motor 4 can be turned off, which is convenient for flexible expansion and expansion of the step board support area according to usage requirements. When the occupied area needs to be reduced after use, the drive motor 4 is started in the reverse direction. Similarly, the movement direction of the drive motor 4 is completely opposite to that of the above-mentioned forward start. At this time, the rectangular expansion plate 2 moves back to the left and shrinks into the box-shaped step board 1 to reduce its volume, thereby reducing the occupied area when not in use.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A movable subway vehicle maintenance step board tooling, comprising a box-shaped step board (1) with an opening on the right side, characterized in that: A threaded transverse drive expansion component is rotatably mounted on the left inner wall of the box-shaped step board (1); the right side of the threaded transverse drive expansion component extends outside the box-shaped step board (1) and is fixedly connected to a connecting seat (5); and a driving motor (4) whose output shaft is fixedly connected to the threaded transverse drive expansion component is fixedly mounted on the left side of the box-shaped step board (1); Two telescopic rotating support assemblies are rotatably mounted between the bottom of the box-shaped step board (1) and the bottom of the connecting seat (5), both ends of the two telescopic rotating support assemblies are fixedly connected to walking wheels (8), and a circular sleeve (9) is fixedly sleeved on the telescopic rotating support assembly located on the front side; A pressure control brake fixing component is embedded and fixed on the bottom of the box-shaped step board (1), and the pressure control brake fixing component is located above the circular sleeve (9) and matches with the circular sleeve (9).

2. The movable subway vehicle maintenance step tool according to claim 1 is characterized in that: The threaded transverse drive expansion assembly comprises a screw (3) rotatably mounted on the left inner wall of the box-shaped treadle (1); a rectangular expansion plate (2) is slidably sleeved inside the box-shaped treadle (1); the rectangular expansion plate (2) is threadedly sleeved on the screw (3); the right side of the rectangular expansion plate (2) extends outside the box-shaped treadle (1) and is fixedly connected to the left side of the connecting seat (5); the left end of the screw (3) is fixedly connected to the right end of the output shaft of the driving motor (4).

3. The movable subway vehicle maintenance step tool according to claim 2 is characterized in that: The telescopic rotating support assembly comprises a rotating shaft (7) rotatably mounted at the bottom of the box-shaped step board (1); two square rods (6) are rotatably mounted at the bottom of the connecting seat (5); the right ends of the two rotating shafts (7) are each provided with a square hole; the square rods (6) are slidably sleeved in the corresponding square holes; the right ends of the two square rods (6) are respectively fixedly connected to the left sides of the two running wheels (8) on the right side; the left ends of the two rotating shafts (7) are respectively fixedly connected to the right sides of the two running wheels (8) on the left side; and a round sleeve (9) is fixedly sleeved on the rotating shaft (7) on the front side.

4. The movable subway vehicle maintenance step tool according to claim 3 is characterized in that: The pressure-controlled brake assembly comprises an electric push rod (10) embedded and fixed at the bottom of a box-shaped pedal board (1); a brake block (13) is arranged on the top of the circular sleeve (9); a pressure plate (12) is fixedly connected to the top of the brake block (13); a pressure sensor (14) is embedded and fixed to the top of the pressure plate (12); the top of the pressure sensor (14) is fixedly connected to the protruding end of the electric push rod (10); a controller (11) is fixedly connected to the right side of the electric push rod (10); and the pressure sensor (14) and the electric push rod (10) are both electrically connected to the controller (11).

5. The movable subway vehicle maintenance step tool according to claim 1 is characterized in that: The tops of the repelling sides of the box-shaped tread plate (1) and the connecting seat (5) are both fixedly connected with two hanging rings (15).

6. The movable subway vehicle maintenance step tool according to claim 4 is characterized in that: A storage battery is fixedly installed at the bottom of the box-shaped step board (1); the drive motor (4), the electric push rod (10) and the controller (11) are all electrically connected to the storage battery; and a wireless remote control switch is fixed and electrically connected to the front side of the electric push rod (10).

7. The movable subway vehicle maintenance step tool according to claim 2 is characterized in that: A thread groove which is threadably connected to the screw rod (3) is provided on the left side of the rectangular expansion plate (2).

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