Subway safety bogie and using method thereof

Abstract

The invention discloses a subway safety bogie and a using method thereof, and belongs to the technical field of bogies. The subway safety bogie comprises two frameworks; the outer surface of one side of each framework is fixedly connected with an axle box; the number of the wheel pairs is two, each wheel pair is rotationally connected between the two frameworks, and one end of each axle box is fixedly connected with one end of the corresponding wheel pair; the traction seat is embedded between the two frameworks in a sliding mode, a limiting block is adjusted to be inserted between the wheel pair and the track through rotation of a fixing motor, meanwhile, a connecting threaded rod is made to rotate through movement of a rack, a connecting threaded cylinder is adjusted to push a fixing plate to move, the fixing plate is made to move to the side face of the wheel pair, and auxiliary fixing of the wheel pair is achieved; and through transmission of a gear and a toothed belt, a fixed threaded rod rotates, a cleaning rod is attached to the surface of the rail, and the cleaning rod rotates through rotation and transmission of a mounting motor to clean sundries on the surface of the rail.

Description

Technical Field

[0001] The present invention belongs to the technical field of bogies, and in particular relates to a subway safety bogie and a method for using the same. Background Art

[0002] The subway safety bogie is one of the core components of subway vehicles. Its design and function are crucial to ensuring the safe operation of subway trains. The bogie is the running part of a rail vehicle, like a person's legs. In a subway vehicle, the bogie not only bears the weight of the vehicle body, but is also responsible for transmitting various loads and forces, while ensuring that the train can run flexibly along a straight line and smoothly pass through curves. The design and optimization of the subway safety bogie is directly related to the driving stability, ride comfort and safety of the subway train.

[0003] The existing subway safety bogies may slip when the subway stops, and they cannot achieve the anti-slip function, resulting in poor safety. In addition, during the operation of the existing subway safety bogies, debris will remain on the track and it cannot be cleaned, resulting in bumpy driving or safety hazards, thereby reducing the overall driving stability of the subway train and the riding safety of passengers. Summary of the Invention

[0004] The purpose of the present invention is to provide a subway safety bogie and a method for using the same, wherein a fixed motor rotates, a fixed threaded rod rotates through transmission, a moving block moves on the fixed threaded rod, an installation box drives a limit block to move, until the limit block is inserted between the wheelset and the track, the installation box drives the rack to move in the connecting box, the rack and the rotating gear are engaged, the rotating gear drives the support rod to rotate, the support rod drives the transmission bevel gear to rotate, the transmission bevel gear and the connecting bevel gear are engaged, the connecting threaded rod rotates, the connecting cylinder moves on the connecting rod, the connecting threaded cylinder pushes the fixed plate to move, when the limit block is inserted between the wheelset and the track When the wheel is running, the fixed plate moves to the side of the wheel set to assist in fixing the wheel set, and drives one of the fixed gears to rotate through the fixed motor. Through the toothed belt transmission, the other fixed gear drives the fixed threaded rod to rotate. The fixed rod is limited to move the moving block, and the installation box is pushed to move by the fixed electric telescopic rod, so that the cleaning rod fits the track surface. The installation motor is turned on, and the installation motor rotates to drive one of the installation gears to rotate. The toothed belt transmission drives the other installation gear to rotate the installation rod, and the installation rod drives the installation bevel gear to rotate. The meshing of the installation bevel gear and the fixed bevel gear makes the cleaning rod rotate to clean the debris on the track surface.

[0005] The technical solution adopted by the present invention is as follows: A subway safety bogie comprises: a frame, wherein the frames are provided with a total of two; an outer surface of one side of each of the frames is fixedly connected to an axle box; a wheelset, wherein the wheelset is provided with a total of two, each of the wheelset is rotatably connected between the two frames, and one end of each axle box is fixedly connected to one end of the wheelset; a traction seat, wherein the traction seat is slidably embedded between the two frames; a buffer structure, wherein the buffer structure is provided with a total of four groups, and each group of the buffer structures is provided on the traction seat and the frame; a cleaning mechanism, wherein the cleaning mechanism is provided with a total of two groups, and each group of the cleaning mechanism includes an adjusting component, a pushing component, a rotating component, a transmission component, an installation component, a moving component and a limiting component, the adjusting component is provided on the frame, the pushing component and the installation component are both provided on the adjusting component, the rotating component and the transmission component are both provided on the pushing component, and the moving component and the limiting component are both provided on the installation component.

[0006] Wherein, each group of the buffer components includes a plurality of buffer springs and a plurality of buffers, each of the buffer springs and buffers is fixedly connected between the frame and the traction seat, and the buffer springs are sleeved on the outer surface of the buffer.

[0007] Wherein, the adjusting component includes a fixed box, a fixed motor, two fixed gears, a fixed threaded rod, a fixed rod and a moving block, an outer surface of one side of the fixed box is fixedly connected to the outer surface of one side of the frame, one end of the fixed threaded rod is rotatably connected to the inner wall of one side of the fixed box, one end of the fixed rod is fixedly connected to the inner wall of one side of the fixed box, the moving block is threadedly sleeved on the outer surface of the fixed threaded rod, and the moving block is slidably sleeved on the outer surface of the fixed rod, the fixed motor is fixedly connected to the outer surface of one side of the fixed box, one of the fixed gears is fixedly sleeved on the output end of the fixed motor, and the other fixed gear is fixedly sleeved on the outer surface of the fixed threaded rod, and the two fixed gears are mutually transmitted through a toothed belt.

[0008] Among them, the pushing component includes two fixed electric telescopic rods, an installation box and a limit block, one end of each fixed electric telescopic rod is fixedly connected to the bottom of the moving block, the top of the installation box is fixedly connected to the extended ends of the two fixed electric telescopic rods, and the outer surface of one side of the limit block is fixedly connected to the outer surface of one side of the installation box.

[0009] Among them, the rotating component includes a mounting motor, two mounting gears and a mounting rod. The mounting motor is fixedly connected to the upper inner wall of the mounting box. One of the mounting gears is fixedly sleeved on the output end of the mounting motor. The mounting rod is rotatably connected between the inner walls on both sides of the mounting box. The other mounting gear is fixedly sleeved on the outer surface of the mounting rod. The two mounting gears are transmitted to each other through a toothed belt.

[0010] Among them, the transmission components include two mounting bevel gears, two fixed bevel gears and two cleaning rods, each of the mounting bevel gears is fixedly sleeved on the outer surface of the mounting rod, one end of each cleaning rod rotates and passes through the outer surface of one side of the mounting box, each of the fixed bevel gears is fixedly sleeved on one end of the cleaning rod, and each fixed bevel gear and the mounting bevel gear transmit transmission to each other.

[0011] The installation component includes an electric telescopic rod and a connection box, one end of the electric telescopic rod is fixedly connected to the bottom of the fixing box, and the top of the installation box is fixedly connected to the extended end of the electric telescopic rod.

[0012] Among them, the moving part includes a rack, a rotating gear, a support rod and a transmission bevel gear. One end of the rack is fixedly connected to the outer surface of one side of the installation box, and the rack slides through the outer surface of one side of the connecting box. The support rod is rotatably connected between the upper and lower inner walls of the connecting box. The rotating gear is fixedly sleeved on the outer surface of the support rod, and the rotating gear and the rack transmit to each other. The transmission bevel gear is fixedly sleeved on the outer surface of the support rod.

[0013] Among them, the limiting component includes a connecting bevel gear, a connecting threaded rod, a connecting threaded cylinder, two connecting rods, two connecting cylinders and a fixed plate, one end of the connecting threaded rod rotates and passes through the outer surface of one side of the connecting box, the connecting bevel gear is fixedly sleeved on one end of the connecting threaded rod, and the connecting bevel gear and the transmission bevel gear are mutually transmitted, the connecting threaded cylinder is threadedly sleeved on the outer surface of the connecting threaded rod, and the outer surface of one side of the fixing plate is fixedly connected to one end of the connecting threaded cylinder, one end of each of the connecting rods is fixedly connected to the outer surface of one side of the connecting box, each of the connecting cylinders is slidably sleeved on the outer surface of the connecting rod, and one end of each connecting cylinder is fixedly connected to the outer surface of one side of the fixing plate.

[0014] A method for using a subway safety bogie comprises the following steps:

[0015] Step 1: Clear away debris

[0016] Turn on the fixed motor, which drives one of the fixed gears to rotate. Through the toothed belt transmission, the other fixed gear drives the fixed threaded rod to rotate. The fixed rod is limited to move the moving block. The installation box is pushed to move through the fixed electric telescopic rod, so that the cleaning rod fits the track surface. Turn on the installation motor, and the installation motor rotates to drive one of the installation gears to rotate. Through the toothed belt transmission, the other installation gear drives the installation rod to rotate. The installation rod drives the installation bevel gear to rotate. The meshing of the installation bevel gear and the fixed bevel gear causes the cleaning rod to rotate to clean the debris on the track surface.

[0017] Step 2: Fixed limit

[0018] When the subway stops, the fixed motor is turned on, and the fixed threaded rod is rotated through transmission, so that the moving block moves on the fixed threaded rod, and the installation box drives the limit block to move until the limit block is inserted between the wheelset and the track for limiting position;

[0019] Step 3: Auxiliary fixation

[0020] When the mounting box moves, the mounting box drives the rack to move in the connecting box. Through the meshing of the rack and the rotating gear, the rotating gear drives the support rod to rotate, and the support rod drives the transmission bevel gear to rotate. Through the meshing of the transmission bevel gear and the connecting bevel gear, the connecting threaded rod rotates, and the connecting cylinder moves on the connecting rod, so that the connecting threaded cylinder pushes the fixed plate to move. When the limit block is inserted between the wheelset and the track, the fixed plate moves to the side of the wheelset to assist in fixing the wheelset.

[0021] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0022] (1) In the present invention, the fixed motor rotates, and the fixed threaded rod rotates through transmission, so that the moving block moves on the fixed threaded rod, and the installation box drives the limit block to move until the limit block is inserted between the wheelset and the track. The installation box drives the rack to move in the connecting box, and the rotating gear is engaged with the rack, so that the rotating gear drives the support rod to rotate, and the support rod drives the transmission bevel gear to rotate. The transmission bevel gear and the connecting bevel gear are engaged with the connecting threaded rod, and the connecting tube moves on the connecting rod, so that the connecting threaded tube pushes the fixed plate to move. When the limit block is inserted between the wheelset and the track, the fixed plate moves to the side of the wheelset to assist in fixing the wheelset and prevent the subway from slipping.

[0023] (2) In the present invention, a fixed motor drives one of the fixed gears to rotate, and the other fixed gear drives the fixed threaded rod to rotate through the toothed belt transmission. The fixed rod is limited to move the moving block, and the installation box is pushed to move by the fixed electric telescopic rod, so that the cleaning rod fits the track surface. The installation motor is turned on, and the installation motor rotates to drive one of the installation gears to rotate. The toothed belt transmission drives the other installation gear to rotate the installation rod, and the installation rod drives the installation bevel gear to rotate. The meshing of the installation bevel gear and the fixed bevel gear causes the cleaning rod to rotate, thereby cleaning the debris on the track surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a front perspective view of the present invention;

[0025] Figure 2 It is a partial side perspective cross-sectional view of the present invention;

[0026] Figure 3A top perspective sectional view of a cleaning mechanism portion of the present invention;

[0027] Figure 4 A top perspective sectional view of a portion of the cleaning mechanism of the present invention;

[0028] Figure 5 For the present invention Figure 4 A magnified view of part A;

[0029] Figure 6 A side perspective sectional view of a cleaning mechanism portion of the present invention;

[0030] Figure 7 It is a side perspective sectional view of a portion of the cleaning mechanism of the present invention.

[0031] Markings in the figure: 1. frame; 2. traction seat; 3. buffer spring; 4. buffer; 5. wheelset; 6. axle box; 7. cleaning mechanism; 701. fixed box; 702. fixed motor; 703. fixed gear; 704. fixed threaded rod; 705. fixed rod; 706. moving block; 707. fixed electric telescopic rod; 708. mounting box; 709. limit block; 710. mounting motor; 711. mounting gear; 712. mounting rod; 713. mounting bevel gear; 714. fixing bevel gear; 715. cleaning rod; 716. mounting electric telescopic rod; 717. rack; 718. connecting box; 719. rotating gear; 720. support rod; 721. transmission bevel gear; 722. connecting bevel gear; 723. connecting threaded rod; 724. connecting threaded cylinder; 725. connecting rod; 726. connecting cylinder; 727. fixing plate. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0033] Reference Figure 1-Figure 7: The present invention provides a technical solution: a subway safety bogie, comprising: a frame 1, two frames 1 are provided; an outer surface of one side of each frame 1 is fixedly connected to an axle box 6; a wheelset 5, two wheelsets 5 are provided, each wheelset 5 is rotatably connected between the two frames 1, and one end of each axle box 6 is fixedly connected to one end of the wheelset 5; a traction seat 2, the traction seat 2 is slidably embedded between the two frames 1; a buffer structure, four groups of buffer structures are provided, and each group of buffer structures is provided on the traction seat 2 and the frame 1; a cleaning mechanism 7, two groups of cleaning mechanisms 7 are provided, and each group of cleaning mechanisms 7 includes an adjusting component, a pushing component, a rotating component, a transmission component, an installation component, a moving component and a limiting component, the adjusting component is provided on the frame 1, the pushing component and the installation component are both provided on the adjusting component, the rotating component and the transmission component are both provided on the pushing component, and the moving component and the limiting component are both provided on the installation component.

[0034] In this embodiment: the buffer structure is provided for buffering the decompression, the cleaning mechanism 7 is provided for clearing debris, the adjusting component is provided for adjusting the position of the pushing component, the pushing component is used for installing the rotating component and the transmission component, the rotating component is provided to rotate the transmission component, the transmission component can clear debris, the mounting component is provided for installing the moving component and the limiting component, the moving component is provided to adjust the position of the limiting component, and the limiting component is provided to assist in fixing the wheelset 5.

[0035] Specifically, each set of buffer components includes a plurality of buffer springs 3 and a plurality of buffers 4 . Each buffer spring 3 and buffer 4 is fixedly connected between the frame 1 and the traction seat 2 , and the buffer spring 3 is sleeved on the outer surface of the buffer 4 .

[0036] In this embodiment: a plurality of buffer springs 3 and a plurality of buffers 4 are used to buffer the decompression. The principle and structure of the buffer 4 are common knowledge to those skilled in the art and will not be introduced in detail here. The model can be selected according to actual usage.

[0037] Specifically, the adjusting components include a fixed box 701, a fixed motor 702, two fixed gears 703, a fixed threaded rod 704, a fixed rod 705 and a moving block 706. The outer surface of one side of the fixed box 701 is fixedly connected to the outer surface of one side of the frame 1, one end of the fixed threaded rod 704 is rotatably connected to the inner wall of one side of the fixed box 701, one end of the fixed rod 705 is fixedly connected to the inner wall of one side of the fixed box 701, the moving block 706 is threadedly sleeved on the outer surface of the fixed threaded rod 704, and the moving block 706 is slidably sleeved on the outer surface of the fixed rod 705, the fixed motor 702 is fixedly connected to the outer surface of one side of the fixed box 701, one of the fixed gears 703 is fixedly sleeved on the output end of the fixed motor 702, and the other fixed gear 703 is fixedly sleeved on the outer surface of the fixed threaded rod 704, and the two fixed gears 703 are mutually transmitted through a toothed belt.

[0038] In this embodiment: the fixed motor 702 rotates, and the fixed motor 702 drives one of the fixed gears 703 to rotate. Through the toothed belt transmission, the other fixed gear 703 drives the fixed threaded rod 704 to rotate. The fixed rod 705 is limited to move the movable block 706. The position of the movable block 706 can be adjusted by the forward and reverse rotation of the fixed motor 702, thereby adjusting the position of the pushing component. The principle and structure of the fixed motor 702 are common knowledge of technicians in this field and will not be introduced in detail here. Its model can be selected according to actual usage.

[0039] Specifically, the pushing component includes two fixed electric telescopic rods 707, an installation box 708 and a limit block 709. One end of each fixed electric telescopic rod 707 is fixedly connected to the bottom of the moving block 706. The top of the installation box 708 is fixedly connected to the extended ends of the two fixed electric telescopic rods 707. The outer surface of one side of the limit block 709 is fixedly connected to the outer surface of one side of the installation box 708.

[0040] In this embodiment, the fixed electric telescopic rod 707 can push the installation box 708 to move, and the position of the installation box 708 can be adjusted. The limit block 709 can limit the wheel set 5, thereby preventing the subway from slipping. The principle and structure of the fixed electric telescopic rod 707 are common knowledge among those skilled in the art and will not be described in detail here. The model can be selected according to actual usage.

[0041] Specifically, the rotating parts include a mounting motor 710, two mounting gears 711 and a mounting rod 712. The mounting motor 710 is fixedly connected to the upper inner wall of the mounting box 708. One of the mounting gears 711 is fixedly sleeved on the output end of the mounting motor 710. The mounting rod 712 is rotatably connected between the inner walls on both sides of the mounting box 708. The other mounting gear 711 is fixedly sleeved on the outer surface of the mounting rod 712. The two mounting gears 711 are mutually transmitted through a toothed belt.

[0042] In this embodiment: the installation motor 710 rotates to drive one of the installation gears 711 to rotate, and the other installation gear 711 drives the installation rod 712 to rotate through the transmission of the toothed belt. The principle and structure of the installation motor 710 are common knowledge to those skilled in the art and will not be introduced in detail here. Its model can be selected according to actual usage.

[0043] Specifically, the transmission components include two mounting bevel gears 713, two fixed bevel gears 714 and two cleaning rods 715. Each mounting bevel gear 713 is fixedly sleeved on the outer surface of the mounting rod 712. One end of each cleaning rod 715 rotates and passes through the outer surface of one side of the mounting box 708. Each fixed bevel gear 714 is fixedly sleeved on one end of the cleaning rod 715, and each fixed bevel gear 714 and the mounting bevel gear 713 transmit power to each other.

[0044] In this embodiment, the mounting rod 712 drives the mounting bevel gear 713 to rotate, and the meshing of the mounting bevel gear 713 and the fixed bevel gear 714 causes the cleaning rod 715 to rotate to clean the debris on the track surface.

[0045] Specifically, the installation components include an electric telescopic rod 716 and a connection box 718 . One end of the electric telescopic rod 716 is fixedly connected to the bottom of the fixing box 701 , and the top of the installation box 708 is fixedly connected to the extended end of the electric telescopic rod 716 .

[0046] In this embodiment, the electric telescopic rod 716 is installed to push the connection box 718 to move and adjust the position of the connection box 718. The principle and structure of installing the electric telescopic rod 716 are common knowledge to those skilled in the art and will not be introduced in detail here. The model can be selected according to actual usage.

[0047] Specifically, the moving parts include a rack 717, a rotating gear 719, a support rod 720 and a transmission bevel gear 721. One end of the rack 717 is fixedly connected to the outer surface of one side of the installation box 708, and the rack 717 slides through the outer surface of one side of the connecting box 718. The support rod 720 is rotatably connected between the upper and lower inner walls of the connecting box 718. The rotating gear 719 is fixedly sleeved on the outer surface of the support rod 720, and the rotating gear 719 and the rack 717 transmit transmission to each other. The transmission bevel gear 721 is fixedly sleeved on the outer surface of the support rod 720.

[0048] In this embodiment, the rack 717 and the rotating gear 719 are engaged, so that the rotating gear 719 drives the support rod 720 to rotate, and the support rod 720 drives the transmission bevel gear 721 to rotate, thereby playing a transmission role.

[0049] Specifically, the limiting components include a connecting bevel gear 722, a connecting threaded rod 723, a connecting threaded cylinder 724, two connecting rods 725, two connecting cylinders 726 and a fixing plate 727. One end of the connecting threaded rod 723 rotates and passes through the outer surface of one side of the connecting box 718. The connecting bevel gear 722 is fixedly sleeved on one end of the connecting threaded rod 723, and the connecting bevel gear 722 and the transmission bevel gear 721 transmit transmission to each other. The connecting threaded cylinder 724 is threadedly sleeved on the outer surface of the connecting threaded rod 723. The outer surface of one side of the fixing plate 727 is fixedly connected to one end of the connecting threaded cylinder 724. One end of each connecting rod 725 is fixedly connected to the outer surface of one side of the connecting box 718. Each connecting cylinder 726 is slidably sleeved on the outer surface of the connecting rod 725, and one end of each connecting cylinder 726 is fixedly connected to the outer surface of one side of the fixing plate 727.

[0050] In this embodiment: through the engagement of the transmission bevel gear 721 and the connecting bevel gear 722, the connecting threaded rod 723 rotates, the connecting cylinder 726 moves on the connecting rod 725, and the connecting threaded cylinder 724 pushes the fixing plate 727 to move. When the limit block 709 is inserted between the wheelset 5 and the track, the fixing plate 727 moves to the side of the wheelset 5 to assist in fixing the wheelset 5.

[0051] The following is a detailed description of a method for using a subway safety bogie and a method for using the same provided by an embodiment of the present invention. The method for using the bogie includes the following steps: Step 1, cleaning debris: Turn on the fixed motor 702, the fixed motor 702 drives one of the fixed gears 703 to rotate, and through the toothed belt transmission, the other fixed gear 703 drives the fixed threaded rod 704 to rotate, and the fixed rod 705 is limited to move the moving block 706, and the installation box 708 is pushed to move by the fixed electric telescopic rod 707, so that the cleaning rod 715 fits the track surface, and turns on the installation motor 710. The installation motor 710 rotates to drive one of the installation gears 711 to rotate, and the other installation gear 711 is driven by the toothed belt transmission to drive the installation rod 712 to rotate, and the installation rod 712 drives the installation bevel gear 713 to rotate, and the meshing of the installation bevel gear 713 and the fixed bevel gear 714 causes the cleaning rod 715 to rotate, thereby cleaning debris on the track surface; Step 2, fixing Fixed limit: When the subway stops, turn on the fixed motor 702, and the fixed threaded rod 704 rotates through the transmission, so that the moving block 706 moves on the fixed threaded rod 704, so that the installation box 708 drives the limit block 709 to move until the limit block 709 is inserted between the wheelset 5 and the track for limiting. Step 3, auxiliary fixation: When the installation box 708 moves, the installation box 708 drives the rack 717 to move in the connecting box 718, and the rack 717 and the rotating gear 719 are rotated. The engagement causes the rotating gear 719 to drive the support rod 720 to rotate, and the support rod 720 drives the transmission bevel gear 721 to rotate. Through the engagement of the transmission bevel gear 721 and the connecting bevel gear 722, the connecting threaded rod 723 rotates, and the connecting cylinder 726 moves on the connecting rod 725, so that the connecting threaded cylinder 724 pushes the fixing plate 727 to move. When the limit block 709 is inserted between the wheelset 5 and the track, the fixing plate 727 moves to the side of the wheelset 5 to assist in fixing the wheelset 5.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A subway safety bogie, characterized in that: include: A frame, two frames are provided; an axle box is fixedly connected to the outer surface of one side of each frame; Wheel sets, there are two wheelsets in total, each wheel set is rotatably connected between the two frames, and one end of each axle box is fixedly connected to one end of the wheel set; A traction seat, which is slidably embedded between the two frames; Buffer structure, there are four groups of buffer structures, each group of buffer structures is arranged on the traction seat and the frame; The cleaning mechanism is provided with two groups, each group of cleaning mechanisms comprises an adjusting component, a pushing component, a rotating component, a transmission component, an installation component, a moving component and a limiting component. The adjusting component is arranged on the frame, the pushing component and the installation component are both arranged on the adjusting component, the rotating component and the transmission component are both arranged on the pushing component, and the moving component and the limiting component are both arranged on the installation component.

2. A subway safe turning device and a method of using the same as claimed in claim 1, characterized in that: Each group of buffer components includes a plurality of buffer springs and a plurality of buffers. Each buffer spring and buffer is fixedly connected between the frame and the traction seat. The buffer spring is sleeved on the outer surface of the buffer.

3. A subway safety bogie as claimed in claim 2, characterized in that: The adjusting component includes a fixed box, a fixed motor, two fixed gears, a fixed threaded rod, a fixed rod and a moving block. One side outer surface of the fixed box is fixedly connected to one side outer surface of the frame. One end of the fixed threaded rod is rotatably connected to one side inner wall of the fixed box. One end of the fixed rod is fixedly connected to one side inner wall of the fixed box. The moving block is threadedly sleeved on the outer surface of the fixed threaded rod, and the moving block is slidably sleeved on the outer surface of the fixed rod. The fixed motor is fixedly connected to one side outer surface of the fixed box, one of the fixed gears is fixedly sleeved on the output end of the fixed motor, and the other fixed gear is fixedly sleeved on the outer surface of the fixed threaded rod. The two fixed gears are mutually transmitted through a toothed belt.

4. A subway safety bogie as claimed in claim 3, characterized in that: The pushing component includes two fixed electric telescopic rods, a mounting box and a limit block, one end of each fixed electric telescopic rod is fixedly connected to the bottom of the moving block, the top of the mounting box is fixedly connected to the extended ends of the two fixed electric telescopic rods, and the outer surface of one side of the limit block is fixedly connected to the outer surface of one side of the mounting box.

5. A subway safety bogie as claimed in claim 4, characterized in that: The rotating component includes a mounting motor, two mounting gears and a mounting rod. The mounting motor is fixedly connected to the upper inner wall of the mounting box. One of the mounting gears is fixedly sleeved on the output end of the mounting motor. The mounting rod is rotatably connected between the inner walls on both sides of the mounting box. The other mounting gear is fixedly sleeved on the outer surface of the mounting rod. The two mounting gears are mutually transmitted through a toothed belt.

6. A subway safety bogie as claimed in claim 5, characterized in that: The transmission component includes two mounting bevel gears, two fixed bevel gears and two cleaning rods. Each mounting bevel gear is fixedly sleeved on the outer surface of the mounting rod. One end of each cleaning rod rotates and passes through the outer surface of one side of the mounting box. Each fixed bevel gear is fixedly sleeved on one end of the cleaning rod, and each fixed bevel gear and the mounting bevel gear transmit each other.

7. A subway safety bogie as claimed in claim 6, characterized in that: The installation component comprises an electric telescopic rod and a connection box, one end of the electric telescopic rod is fixedly connected to the bottom of the fixing box, and the top of the installation box is fixedly connected to the extended end of the electric telescopic rod.

8. A subway safety bogie as claimed in claim 7, characterized in that: The moving component includes a rack, a rotating gear, a support rod and a transmission bevel gear. One end of the rack is fixedly connected to the outer surface of one side of the installation box, and the rack slides through the outer surface of one side of the connecting box. The support rod is rotatably connected between the upper and lower inner walls of the connecting box. The rotating gear is fixedly sleeved on the outer surface of the support rod, and the rotating gear and the rack transmit to each other. The transmission bevel gear is fixedly sleeved on the outer surface of the support rod.

9. A subway safety bogie as claimed in claim 8, characterized in that: The limiting component includes a connecting bevel gear, a connecting threaded rod, a connecting threaded cylinder, two connecting rods, two connecting cylinders and a fixed plate. One end of the connecting threaded rod rotates and passes through the outer surface of one side of the connecting box. The connecting bevel gear is fixedly sleeved on one end of the connecting threaded rod, and the connecting bevel gear and the transmission bevel gear are mutually transmitted. The connecting threaded cylinder is threadedly sleeved on the outer surface of the connecting threaded rod. The outer surface of one side of the fixing plate is fixedly connected to one end of the connecting threaded cylinder. One end of each connecting rod is fixedly connected to the outer surface of one side of the connecting box. Each connecting cylinder is slidably sleeved on the outer surface of the connecting rod, and one end of each connecting cylinder is fixedly connected to the outer surface of one side of the fixing plate.

10. A method for using a subway safety bogie, applied to the subway safety bogie according to claim 9, characterized in that: The following steps are involved: S1. Clean up the debris The fixed motor is turned on, and the fixed motor drives one of the fixed gears to rotate. Through the toothed belt transmission, the other fixed gear drives the fixed threaded rod to rotate. The fixed rod is limited to move the moving block. The installation box is pushed to move through the fixed electric telescopic rod, so that the cleaning rod fits the track surface. The installation motor is turned on, and the installation motor rotates to drive one of the installation gears to rotate. Through the toothed belt transmission, the other installation gear drives the installation rod to rotate. The installation rod drives the installation bevel gear to rotate. Through the meshing of the installation bevel gear and the fixed bevel gear, the cleaning rod rotates to clean the debris on the track surface. S2, fixed limit When the subway stops, the fixed motor is turned on, and the fixed threaded rod is rotated through transmission, so that the moving block moves on the fixed threaded rod, and the installation box drives the limit block to move until the limit block is inserted between the wheel set and the track for limiting; S3, auxiliary fixation When the installation box moves, the installation box drives the rack to move in the connecting box, and the rotating gear drives the support rod to rotate through the meshing of the rack and the rotating gear, and the support rod drives the transmission bevel gear to rotate. Through the meshing of the transmission bevel gear and the connecting bevel gear, the connecting threaded rod rotates, and the connecting cylinder moves on the connecting rod, so that the connecting threaded cylinder pushes the fixed plate to move. When the limit block is inserted between the wheelset and the track, the fixed plate moves to the side of the wheelset to assist in fixing the wheelset.

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