Motor train unit axle box spring overhaul stand

Abstract

The utility model discloses a motor train unit axle box spring overhaul stand, and relates to the technical field of spring overhaul stands, the motor train unit axle box spring overhaul stand comprises an overhaul working table, an operation table is fixedly arranged on one side of the overhaul working table, a U-shaped support is fixedly arranged on the top of the overhaul working table, and a limiting assembly is arranged in the overhaul working table. The U-shaped support is arranged on the base and used for limiting and fixing the to-be-overhauled spring, the dislocation phenomenon is avoided, the overhauling effect is improved, and the overhauling assembly is arranged on the U-shaped support and used for conducting elasticity detection and size detection on the to-be-overhauled spring. The rotating shaft rotates to drive the gear, the bevel gear, the rotating rod and the threaded rod to rotate mutually, so that the threaded block and the limiting rods horizontally move along the threaded rod, the two limiting rods move relatively and are separated, the two sides of the inner wall of a to-be-overhauled spring are clamped in an abutting mode, the to-be-overhauled spring is conveniently limited, and the service life of the to-be-overhauled spring is prolonged. And the dislocation phenomenon in the subsequent maintenance process is avoided, and the maintenance effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of spring repair platforms, in particular to an EMU axle box spring repair platform. Background Art

[0002] EMU refers to a train consisting of multiple vehicles that can run independently, usually running on high-speed railways, including high-speed EMUs, intercity EMUs, etc. In railway EMUs, the parts that are sleeved on the axle necks to connect the wheelset and the bogie frame or the two-axle vehicle body are referred to as axle boxes. Its function is to transfer the weight and load of the vehicle body to the wheelset, lubricate the axle necks, reduce friction, and reduce running resistance. The axle box contains springs, which need to be inspected using a spring inspection bench before installation.

[0003] For example, a maintenance platform for EMU axle box springs in Chinese patent application number CN202321882718.9 relates to the field of advanced maintenance technology for EMUs, and includes a main body, a table top is fixedly mounted on the upper part of the main body, two rotating devices are provided in the middle of the table top, a spring limit device is provided on the rotating device, and a measuring device is fixedly mounted on one side of the table top. The utility model enables the axle box spring size measurement and appearance maintenance to be completed on one workbench, and is combined with the existing test bench to reduce the number of times the axle box spring is transported during the maintenance process. At the same time, it has the function of automatically measuring and judging the verticality of the axle box spring, and makes appearance maintenance and other measurement operations more convenient, significantly improving the maintenance efficiency and quality of the EMU axle box springs.

[0004] However, in actual use, the above device is used to measure the size and inspect the appearance of the spring. Springs of different sizes cannot be limited and fixed during the measurement process, and positional deviation is likely to occur, thereby affecting the measurement or inspection work. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides an EMU axle box spring maintenance platform, which drives the gears, bevel gears, rotating rods and threaded rods to rotate relative to each other through the rotation of a rotating shaft, so that the threaded block and the limit rods move horizontally along the threaded rods, thereby realizing the relative movement and separation of the two limit rods, and clamping the two sides of the inner wall of the spring to be inspected, which is convenient for limiting the spring and avoiding misalignment during subsequent maintenance. The maintenance effect is improved, and the problems in the background technology can be effectively solved.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: an EMU axle box spring maintenance platform, comprising a maintenance workbench, an operating table is fixedly provided on one side of the maintenance workbench, and a U-shaped bracket is fixedly provided on the top of the maintenance workbench;

[0007] The interior of the maintenance workbench is provided with a limiting component for limiting and fixing the spring to be maintained, avoiding dislocation and improving the maintenance effect;

[0008] The U-shaped bracket is provided with a maintenance component for elastic detection and dimension detection of the spring to be maintained;

[0009] The limiting component includes two threaded rods. Two horizontally distributed slots are opened at the top end inside the maintenance workbench. Both ends of the threaded rods are respectively connected to both side walls inside the slots through bearings. A threaded block is threadedly connected to the threaded rod. A limiting rod is fixedly arranged at the top of the threaded block, and the top end of the limiting rod penetrates through the slot.

[0010] Preferably, a U-shaped drive slot is opened inside the maintenance workbench, and the U-shaped drive slot is arranged at the bottom of the slot. Rotating rods are respectively connected to both inner side walls at the bottom of the U-shaped drive slot through bearings. One end of the threaded rod penetrates through the maintenance workbench and extends into the U-shaped drive slot and is connected to one end of the rotating rod through a belt drive component, facilitating the two threaded rods to drive the rotating rod to rotate.

[0011] Preferably, two rotating shafts are connected between the front inner side wall and the rear inner side wall inside the U-shaped drive slot through bearings. Two meshing bevel gears are fixedly arranged between the rotating shaft and one end of the adjacent rotating rod.

[0012] Preferably, two meshing gears are fixedly arranged on the front ends of the two rotating shafts. A crank is connected to the front side of the maintenance workbench through a bearing. The rear end of the crank penetrates through the maintenance workbench and is fixedly connected to the front end of one of the rotating shafts. A bolt for fixing between the crank and the maintenance workbench is threadedly connected to the crank, facilitating rotating the crank to drive the two threaded rods to rotate through the gears.

[0013] Preferably, the maintenance component includes an elastic pressing plate. The elastic pressing plate is arranged at the bottom of the U-shaped bracket. An electric push rod is fixedly arranged at the top of the U-shaped bracket. The piston rod of the electric push rod penetrates through the U-shaped bracket and is fixedly connected to the center of the top of the elastic pressing plate, facilitating the electric push rod to drive the elastic pressing plate to lift and lower.

[0014] Preferably, limiting slots matching the limiting rods are opened on both sides of the elastic pressing plate. A rubber pad is fixedly arranged at the bottom of the elastic pressing plate. A laser displacement sensor is embedded at the rear side of the bottom of the elastic pressing plate. An opposed plate is embedded at the rear side of the top of the maintenance workbench. A control panel is embedded at the front side of the top of the operating table, facilitating operating the control panel to control the electric push rod to work.

[0015] Compared with the prior art, the present utility model provides a maintenance bench for the axle box spring of a bullet train, having the following beneficial effects:

[0016] By moving the threaded block and the limit rod horizontally along the threaded rod, the relative movement and separation of the two limit rods are achieved, and the inner walls on both sides of the spring to be overhauled are abutted and clamped, facilitating the limitation of the spring and avoiding the phenomenon of dislocation during the subsequent overhaul process, thereby improving the overhaul effect. Description of the Drawings

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a rear view of the overall structure of the present invention;

[0019] Figure 3 It is a cross-sectional view of the overhaul workbench of the present invention;

[0020] Figure 4 It is a schematic diagram of the structure of the limit component of the present invention;

[0021] Figure 5 It is a schematic diagram of the structure of the overhaul component of the present invention.

[0022] In the figure: 1 overhaul workbench, 2 operation table, 3 control panel, 4 U-shaped bracket, 5 overhaul component, 6 limit component, 7 slotted opening, 8 U-shaped drive slot;

[0023] 51 elastic pressing plate, 52 rubber pad, 53 laser displacement sensor, 54 electric push rod, 55 opposed plate, 61 threaded rod, 62 threaded block, 63 limit rod, 64 rotating rod, 65 bevel gear, 66 rotating shaft, 67 crank, 68 gear. Detailed Embodiment

[0024] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0025] As Figures 1-5 shown, the present invention provides an overhaul bench for the axle box spring of a bullet train, including an overhaul workbench 1, on one side of which an operation table 2 is fixedly arranged, and a U-shaped bracket 4 is fixedly arranged on the top of the overhaul workbench 1.

[0026] As Figures 1-4 shown, a limit component 6 is arranged inside the overhaul workbench 1 for limiting and fixing the spring to be overhauled, avoiding the phenomenon of dislocation, and improving the overhaul effect. The limit component 6 includes two threaded rods 61. Two horizontally distributed slotted openings 7 are opened at the top end inside the overhaul workbench 1. Both ends of the threaded rod 61 are respectively connected to the two side walls inside the slotted opening 7 through bearings. A threaded block 62 is threadedly connected to the threaded rod 61. A limit rod 63 is fixedly arranged on the top of the threaded block 62, and the top end of the limit rod 63 penetrates through the slotted opening 7.

[0027] Inside the maintenance workbench 1, a U-shaped drive groove 8 is formed, and the U-shaped drive groove 8 is arranged at the bottom of the grooving 7. On both inner walls of the bottom of the U-shaped drive groove 8, a rotating rod 64 is connected through a bearing. One end of the threaded rod 61 penetrates through the maintenance workbench 1 and extends into the U-shaped drive groove 8, and is connected with one end of the rotating rod 64 through a belt transmission assembly, which is convenient for the two threaded rods 61 to drive the rotating rod 64 to rotate. Between the front inner wall and the rear inner wall of the U-shaped drive groove 8, two rotating shafts 66 are connected through bearings. Between the rotating shaft 66 and one end of the adjacent rotating rod 64, two meshing bevel gears 65 are fixedly arranged.

[0028] On the front ends of the two rotating shafts 66, two meshing gears 68 are fixedly arranged. On the front side of the maintenance workbench 1, a crank 67 is connected through a bearing. The rear end of the crank 67 penetrates through the maintenance workbench 1 and is fixedly connected with the front end of one of the rotating shafts 66. A bolt for fixing between the crank 67 and the maintenance workbench 1 is threadedly connected to the crank 67, which is convenient for rotating the crank 67 to drive the two threaded rods 61 to rotate through the gears 68.

[0029] By setting the limiting component 6, take the spring workpiece to be maintained, insert its bottom into the two limiting rods 63. At the same time, according to the spring workpieces of different sizes, unscrew the bolt on the crank 67, manually rotate the crank 67 to drive the rotating shaft 66 to rotate and drive the two gears 68 to mesh and rotate with each other, and then drive the two groups of bevel gears 65 to mesh and rotate with each other respectively;

[0030] At the same time, drive the two rotating rods 64 to rotate in opposite directions inside the U-shaped drive groove 8 respectively, and drive the two threaded rods 61 to rotate in opposite directions inside the two groovings 7 respectively according to the belt transmission assembly, and finally drive the threaded blocks 62 and the limiting rods 63 thereon to move horizontally along the threaded rods 61, so as to realize the relative movement and separation of the two limiting rods 63, and resist and clamp the two sides of the inner wall of the spring to be maintained, which is convenient for limiting it and avoiding the phenomenon of dislocation during the subsequent maintenance process, and improving the maintenance effect.

[0031] As Figures 1-3 As shown in FIGS. 4 and 5, a maintenance component 5 is arranged on the U-shaped bracket 4, which is used for elastic detection and dimensional detection of the spring to be maintained. The maintenance component 5 includes an elastic pressing plate 51. The elastic pressing plate 51 is arranged at the bottom of the U-shaped bracket 4. An electric push rod 54 is fixedly arranged on the top of the U-shaped bracket 4. The piston rod of the electric push rod 54 penetrates through the U-shaped bracket 4 and is fixedly connected with the center of the top of the elastic pressing plate 51, which is convenient for the electric push rod 54 to drive the elastic pressing plate 51 to lift and lower. Limiting grooves matching with the limiting rods 63 are formed on both sides of the elastic pressing plate 51.

[0032] A rubber pad 52 is fixedly provided at the bottom of the elastic pressing plate 51. A laser displacement sensor 53 is embedded at the rear side of the bottom of the elastic pressing plate 51. An opposed plate 55 is embedded at the rear side of the top of the maintenance workbench 1. A control panel 3 is embedded at the front side of the top of the operation table 2, which is convenient for operating the control panel 3 to control the operation of the electric push rod 54.

[0033] By arranging the maintenance assembly 5, after the spring to be maintained is limited and fixed, the staff operates the control panel 3 to control the operation of the electric push rod 54 on the U-shaped bracket 4. The piston rod of the electric push rod 54 drives the elastic pressing plate 51 and the rubber pad 52 to lift and contact and press the top of the limited spring, so as to realize the elastic detection of the spring, facilitate obtaining the detection result and convenient for maintenance.

[0034] Meanwhile, during the process of the elastic pressing plate 51 pressing the spring to be compressed, the laser displacement sensor 53 can be operated to emit laser to the opposed plate 55, and the overall length of the spring and the final elastic compression length can be obtained, which is convenient for dimension detection and improves the use effect.

[0035] The above shows and describes the basic principle, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. An EMU axle box spring maintenance platform, comprising a maintenance workbench (1), an operating table (2) fixedly provided on one side of the maintenance workbench (1), characterized in that: A U-shaped bracket (4) is fixedly provided on the top of the maintenance workbench (1); The maintenance workbench (1) is provided with a limit assembly (6) inside, which is used to limit and fix the spring to be repaired, thereby avoiding misalignment and improving the maintenance effect; The U-shaped bracket (4) is provided with a maintenance component (5) for performing elasticity testing and dimensional testing on the spring to be repaired; The limit assembly (6) comprises two threaded rods (61). Two horizontally distributed slots (7) are provided at the top of the interior of the maintenance workbench (1). Two ends of the threaded rod (61) are respectively connected to two side walls of the interior of the slot (7) via bearings. A threaded block (62) is threadedly connected to the threaded rod (61). A limit rod (63) is fixedly provided at the top of the threaded block (62), and the top of the limit rod (63) passes through the slot (7).

2. The EMU axle box spring inspection platform according to claim 1 is characterized by: A U-shaped drive groove (8) is provided inside the maintenance workbench (1), and the U-shaped drive groove (8) is provided at the bottom of the slot (7). The inner walls on both sides of the bottom of the U-shaped drive groove (8) are connected to a rotating rod (64) via a bearing. One end of the threaded rod (61) passes through the maintenance workbench (1) and extends into the U-shaped drive groove (8), and is connected to one end of the rotating rod (64) via a belt transmission assembly.

3. The EMU axle box spring inspection platform according to claim 2 is characterized in that: Two rotating shafts (66) are connected between the inner front side wall and the inner rear side wall of the U-shaped driving groove (8) via bearings, and two mutually meshing bevel gears (65) are fixedly provided between the rotating shaft (66) and one end of the adjacent rotating rod (64).

4. The EMU axle box spring inspection platform according to claim 3 is characterized by: Two mutually meshing gears (68) are fixedly provided on the front ends of the two rotating shafts (66); a crank (67) is connected to the front side of the maintenance workbench (1) via a bearing; a rear end of the crank (67) passes through the maintenance workbench (1) and is fixedly connected to the front end of one of the rotating shafts (66); a bolt for fixing the crank (67) and the maintenance workbench (1) is threadedly connected to the crank (67).

5. The EMU axle box spring inspection platform according to claim 1, characterized in that: The inspection assembly (5) comprises an elastic pressure plate (51), wherein the elastic pressure plate (51) is arranged at the bottom of the U-shaped bracket (4), and an electric push rod (54) is fixedly arranged at the top of the U-shaped bracket (4), wherein the piston rod of the electric push rod (54) passes through the U-shaped bracket (4) and is fixedly connected to the center of the top of the elastic pressure plate (51).

6. The EMU axle box spring inspection platform according to claim 5, characterized in that: Limiting grooves matching the limiting rods (63) are provided on both sides of the elastic pressing plate (51); a rubber pad (52) is fixedly provided on the bottom of the elastic pressing plate (51); a laser displacement sensor (53) is embedded on the rear side of the bottom of the elastic pressing plate (51); a counter-radiation plate (55) is embedded on the rear side of the top of the maintenance workbench (1); and a control panel (3) is embedded on the front side of the top of the operating table (2).

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