A point rail grinding device for track maintenance vehicle

Abstract

The invention discloses a pointed rail grinding device for a track maintenance vehicle, which relates to the field of track maintenance and comprises a frame, a slide, a mounting frame, an adaptive device, a side grinding device, a top surface grinding device and a track maintenance vehicle; the frame is fixedly connected to the front side of the track maintenance vehicle, the bottom of the frame is slidably connected to two slides, the slides are connected to a mounting frame via a connecting assembly, the side grinding device is arranged on the mounting frame, and the top surface grinding device is also arranged on the mounting frame; by arranging the adaptive device, the resistance change of the sliding rheostat is utilized to indirectly reflect the distance between the slide and the mounting frame, thereby ensuring that the distance between the slide and the mounting frame is within a certain range, since the compression amount and elastic force of the spring are constant, the grinding wheel can maintain a constant pressure when contacting the rail, thereby adapting to different rail spacings, ensuring that the rust removal depth during grinding is uniform, and avoiding the situation where some grinding is incomplete and some grinding is excessive.

Description

Technical Field

[0001] The invention relates to the field of track maintenance, and in particular to a point rail grinding device for a track maintenance vehicle. Background Art

[0002] In the rail field, I-rails are widely used. After a period of use, micro cracks sometimes appear on the surface of the rails. If they are not polished at this time, the surface cracks will extend into the interior of the rails, causing greater damage to the rails. Secondly, if the rails are not used for a period of time, they will rust, so they also need to be polished and rust-removed, otherwise there will be safety hazards.

[0003] Existing grinding vehicles are divided into large grinding trains and small track maintenance vehicles. Large grinding trains are primarily used for grinding and maintaining entire sections of track, not specifically for rust removal. Due to their high cost, they are used less frequently and are rarely used for localized maintenance. Small track maintenance vehicles, powered by batteries or diesel engines, are used to maintain rails in localized areas. They can be equipped with a variety of maintenance equipment, are flexible, and are widely used.

[0004] The spacing between the rails varies slightly in different line sections, especially in the curved area where the stock rail and the point rail intersect. The spacing sometimes changes randomly due to the degree of wear of the rails. However, the existing side grinding devices used in track maintenance vehicles are fixed in position and are difficult to adapt to the track spacing and the spacing changes caused by wear. Naturally, it is also difficult to adjust the grinding pressure between the grinding wheel and the side of the rail according to the spacing changes, resulting in uneven grinding pressure and different surface rust removal depths. Summary of the Invention

[0005] The present invention discloses a point rail grinding device for a track maintenance vehicle, so as to solve the problems mentioned in the above background technology.

[0006] A point rail grinding device for a track maintenance vehicle comprises a frame, a slide, a mounting frame, an adaptive device, a side grinding device, a top surface grinding device, and a track maintenance vehicle;

[0007] The frame is fixedly connected to the front side of the track maintenance vehicle, and the bottom of the frame is slidably connected to two slides, and the slides are connected to a mounting frame through a connecting assembly. The side grinding device is provided on the mounting frame and is used to grind the sides of the stock rail and the point rail. The top surface grinding device is also provided on the mounting frame and is used to grind the top surfaces of the stock rail and the point rail.

[0008] The connecting assembly is linked with the adaptive device to automatically adjust the distance between the two slides according to the spacing between the base rails and between the base rails and the point rails, so that the interaction force between the slides and the mounting frame is kept within a certain range, and then the side grinding device is controlled to always maintain the contact pressure with the base rails and the point rails during grinding.

[0009] Preferably, the connecting assembly includes a baffle, and a vertical plate 1 and a vertical plate 2 are provided on the slide. The baffle is located between the vertical plate 1 and the vertical plate 2. Two support rods are fixedly connected to the baffle, and the support rods pass through the vertical plate 1 and are fixedly connected to the mounting frame. The support rods are slidably connected to the vertical plate 1, and a spring 1 is sleeved on the support rod between the mounting frame and the vertical plate 1.

[0010] Preferably, the adaptive device includes an electric push rod, a sliding rheostat and a guide rail. Two sliders are provided on the slide. Two guide rails are fixedly connected to the bottom of the frame. The sliders are slidably connected to the corresponding guide rails. The electric push rod is fixedly connected to the second vertical plate of one of the slides, and its output shaft is fixedly connected to the second vertical plate of the other slide. The sliding rheostat is fixedly connected to the slide on the left, and its slide is fixedly connected to the baffle on the left. The resistance data of the sliding rheostat is input into the controller to calculate the displacement of the baffle.

[0011] Preferably, the side grinding device includes a motor and a grinding wheel, the motor is fixedly connected to the mounting frame, the output shaft of the motor is fixedly connected to a driving pulley, the grinding wheel is vertically mounted on the bottom of the mounting frame and is rotatably connected to the mounting frame, the top of the grinding wheel is fixedly connected to a transmission pulley, and the driving pulley and the transmission pulley are connected by a belt.

[0012] Preferably, the top surface grinding device includes a driven pulley, which is rotatably connected to a rotating seat on the mounting frame, and is connected to the transmission pulley by a belt. The inner side of the driven pulley is provided with a rotating shaft that slides with it and can transmit torque, and a grinding disc is provided at the bottom of the rotating shaft.

[0013] Preferably, a spline is provided on the rotating shaft, and a spline groove for the spline to slide is provided on the inner side of the driven pulley. The top of the rotating shaft is rotatably connected to a limit plate, and two guide rods are provided on the limit plate. The guide rods pass through the bracket on the mounting frame and are connected to the block. A spring 2 is provided on the guide rod between the bracket and the limit plate.

[0014] The advantages of the present invention are:

[0015] By setting up an adaptive device, the change in the resistance of the sliding rheostat is used to indirectly reflect the distance between the slide and the mounting frame, thereby ensuring that the distance between the slide and the mounting frame is within a certain range. Since the compression amount and elastic force of the spring are constant, the grinding wheel can maintain a constant pressure when contacting the track, thereby adapting to different track spacings, ensuring a uniform rust removal depth during grinding, and avoiding incomplete grinding and excessive grinding. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a working schematic diagram of the present invention;

[0017] Figure 2 It is a schematic diagram of each structure on the rack;

[0018] Figure 3 This is the rear view of the rack;

[0019] Figure 4 for Figure 3 A partial enlarged view of point A in the middle;

[0020] Figure 5 Schematic diagram of the slide and the various structures on the mounting frame.

[0021] In the figure: 1, frame; 2, slide; 21, vertical board 1; 22, vertical board 2;

[0022] 3. Adaptive device; 31. Electric push rod; 32. Sliding rheostat; 33. Slider; 34. Guide rail; 35. Slide;

[0023] 4. Side grinding device; 41. Motor; 42. Grinding wheel; 43. Driving pulley; 44. Transmission pulley

[0024] 5. Top surface grinding device; 51. Driven pulley; 52. Rotating seat; 53. Rotating shaft; 54. Grinding disc; 55. Limit plate; 56. Guide rod; 57. Bracket; 58. Stopper; 59. Spring 2;

[0025] 6. Track maintenance vehicle; 7. Connecting assembly; 71. Baffle; 72. Support rod; 73. Spring 1; 8. Base rail; 9. Point rail; 10. Mounting frame. DETAILED DESCRIPTION

[0026] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0027] like Figures 1 to 5 As shown, a pointed rail 9 grinding device for a track maintenance vehicle 6 includes a frame 1, a slide 2, a mounting frame 10, an adaptive device 3, a side grinding device 4, a top surface grinding device 5 and a track maintenance vehicle 6;

[0028] The frame 1 is fixedly connected to the front side of the track maintenance vehicle 6, and the bottom of the frame 1 is slidably connected to two slides 2. The slide 2 is connected to a mounting frame 10 through a connecting assembly 7. The side grinding device 4 is provided on the mounting frame 10 for grinding the sides of the stock rail 8 and the point rail 9. The top surface grinding device 5 is also provided on the mounting frame 10 for grinding the top surfaces of the stock rail 8 and the point rail 9.

[0029] The connecting assembly 7 is linked with the adaptive device 3 to automatically adjust the distance between the two slides 2 according to the spacing between the basic rails 8 and the spacing between the basic rails 8 and the point rail 9, so that the interaction force between the slide 2 and the mounting frame 10 is maintained within a certain range, and then the side grinding device 4 is controlled to always maintain the contact pressure with the basic rail 8 and the point rail 9 during grinding.

[0030] In this embodiment, the connecting assembly 7 includes a baffle 71. The carriage 2 is provided with a first riser 21 and a second riser 22. The baffle 71 is positioned between the first riser 21 and the second riser 22. Two support rods 72 are fixedly connected to the baffle 71. The support rods 72 pass through the first riser 21 and are fixedly connected to the mounting frame 10. The support rods 72 are slidably connected to the first riser 21. A spring 73 is sleeved on the support rods 72 between the mounting frame 10 and the first riser 21. The connecting assembly 7 ensures that the grinding wheel 42 on the mounting frame 10 is in contact with the side of the track. When the mounting frame 10 cannot move further, the carriage 2 can continue to move, thereby increasing the pressure between the grinding wheel 42 and the side of the track.

[0031] In this embodiment, the adaptive device 3 includes an electric push rod 31, a sliding rheostat 32, and a guide rail 34. The slide 2 is provided with two sliders 33. The bottom of the frame 1 is fixedly connected to two guide rails 34. The sliders 33 are slidably connected to their corresponding guide rails 34. The electric push rod 31 is fixedly connected to the second vertical plate 22 of one slide 2, and its output shaft is fixedly connected to the second vertical plate 22 of the other slide 2. The sliding rheostat 32 is fixedly connected to the left slide 2, and its slider 35 is fixedly connected to the left baffle 71. The resistance data of the sliding rheostat 32 is input into the controller to calculate the displacement of the baffle 71. The resistance value of one sliding rheostat 32 is preset as the operating resistance value, and the change in resistance value is used to control the electric push rod 31, which in turn automatically restores the resistance value of the sliding rheostat 32 to the preset value, thereby achieving automatic adjustment of the position of the slide 2 and the spacing between the two slides 2.

[0032] In this embodiment, the side grinding device 4 includes a motor 41 and a grinding wheel 42. The motor 41 is fixedly connected to the mounting frame 10. The output shaft of the motor 41 is fixedly connected to a driving pulley 43. The grinding wheel 42 is vertically installed at the bottom of the mounting frame 10 and is rotatably connected to the mounting frame 10. The top of the grinding wheel 42 is fixedly connected to a transmission pulley 44. The driving pulley 43 and the transmission pulley 44 are connected by a belt.

[0033] In this embodiment, the top surface grinding device 5 includes a driven pulley 51, which is rotatably connected to a rotating seat 52 on the mounting frame 10. The driven pulley 51 is connected to the transmission pulley 44 through a belt. The inner side of the driven pulley 51 is provided with a rotating shaft 53 that slides with it and can transmit torque, and a grinding disc 54 is provided at the bottom of the rotating shaft 53.

[0034] In this embodiment, the rotating shaft 53 is provided with a spline, and the inner side of the driven pulley 51 is provided with a spline groove for the spline to slide. The spline and the spline groove can ensure that the driven pulley 51 drives the rotating shaft 53 to rotate while allowing the rotating shaft 53 to slide inside the driven pulley 51, so that the grinding disc 54 can be closely attached to the top surface of the track under the action of the spring 1 73. The top of the rotating shaft 53 is rotatably connected to the limit plate 55. The limit plate 55 is provided with two guide rods 56. The guide rods 56 pass through the bracket 57 on the mounting frame 10 and are connected to the block 58. The guide rods 56 between the bracket 57 and the limit plate 55 are sleeved with a spring 2 59. The provision of the spring 2 59 can ensure that the grinding disc 54 is in close contact with the top surface of the track.

[0035] Working process and principle:

[0036] The electric push rod 31 is initially in a shortened state, so that the two carriages 2 approach each other. As the two carriages 2 approach each other, the spacing between the two grinding wheels 42 becomes smaller, and then the positions of the two carriages 2 are adjusted so that the grinding wheels 42 are both located between the two tracks.

[0037] At this time, the grinding disc 54 contacts the top surface of the track, and the track causes the grinding disc 54 to rise a certain distance. The rotating shaft 53 with splines slides upward in the driven pulley 51, the distance between the stop block 58 and the bracket 57 is shortened, and the spring 2 59 is compressed, so that the grinding disc 54 can always be close to the track.

[0038] Then, the electric push rod 31 is activated to move the two slides 2 away from each other, and the slides 2 push the mounting frame 10 to move toward the track. The original baffle 71 is tightly attached to the vertical plate 121 under the action of the spring 1 73. As the electric push rod 31 continues to extend, when the grinding wheel 42 contacts the side of the track, the grinding wheel 42 and the mounting frame 10 cannot continue to move outward, but the slide 2 can still move outward. At this time, the slide 2 compresses the spring, causing the baffle 71 to move away from the vertical plate 121, and the baffle 71 drives the slider 35 of the sliding rheostat 32 to move to the right. Here, the resistance between the right end point of the sliding rheostat 32 and the slider 35 is selected as the resistance to be detected. When the slider 35 moves to the right, the resistance increases, and when the slider 35 moves to the left, the resistance decreases. The distance between the vertical plate 121 and the mounting frame 10 decreases, the spring compression increases, and the pressure of the grinding wheel 42 on the side of the track increases. A distance between the vertical plate 121 and the mounting frame 10 is preset as the working distance, that is, a suitable pressure between the grinding wheel 42 and the side of the track when working is determined, and this pressure value corresponds to an output resistance of the sliding rheostat 32. When the output resistance of the sliding rheostat 32 reaches the preset resistance, it means that the pressure between the grinding wheel 42 and the side of the rail reaches the preset value, and the electric push rod 31 stops extending.

[0039] During this process, when the grinding wheel 42 on one side contacts the track first, the presence of spring 1 73 will cause the slide 2 on that side to stop moving, and the slide 2 on the other side will continue to move until both grinding wheels 42 contact the side of the track. Because the elastic force of spring 1 73 is the same, spring 1 73 can move the two slides 2 to a symmetrical position in the middle.

[0040] Subsequently, the track maintenance vehicle 6 is started, driving the frame 1 forward, the motor 41 is started, the driving pulley 43 rotates, and then the transmission pulley 44 rotates via the belt, which in turn rotates the grinding wheel 42 to grind the side of the track. At the same time, the transmission pulley 44 rotates the driven pulley 51 via the belt. Since the spline and spline groove transmit torque between the driven pulley 51 and the rotating shaft 53, the grinding wheel 54 can grind the top surface of the track.

[0041] When the grinding device moves to the place where the pointed rail 9 contacts the base rail 8, the distance between the pointed rail 9 and the base rail 8 will change due to the curved route. If the distance becomes larger, the grinding wheel 42 and the mounting frame 10 will continue to expand outward, so that the block 58 drives the slider 35 to move left. At this time, the resistance value becomes larger, and the electric push rod 31 automatically extends when receiving the information of the increased resistance value, so that the slider 35 moves right to return to the position corresponding to the preset resistance value, thereby realizing a dynamic position change.

[0042] After the grinding is completed, the electric push rod 31 is shortened and the two slides 2 are reset, so that the grinding wheel 42 is no longer in contact with the rail, making it easy to remove the entire device from the rail.

[0043] It is understood from common technical knowledge that the present invention may be implemented by other embodiments that do not depart from its spirit or essential features. Therefore, the embodiments disclosed above are, in all respects, merely illustrative and not exclusive. All modifications within the scope of the present invention or equivalent to the scope of the present invention are intended to be encompassed by the present invention.

Claims

1. A rail grinding device for a track maintenance vehicle, characterized in that: It includes a frame (1), a slide (2), a mounting frame (10), an adaptive device (3), a side grinding device (4), a top surface grinding device (5) and a track maintenance vehicle (6); The frame (1) is fixedly connected to the front side of the track maintenance vehicle (6); the bottom of the frame (1) is slidably connected to two slides (2); the slides (2) are connected to a mounting frame (10) via a connecting assembly (7); the side grinding device (4) is provided on the mounting frame (10) and is used for grinding the side surfaces of the base rail (8) and the point rail (9); the top surface grinding device (5) is also provided on the mounting frame (10) and is used for grinding the top surfaces of the base rail (8) and the point rail (9); The connecting assembly (7) is linked with the adaptive device (3) to automatically adjust the distance between the two slides (2) according to the spacing between the basic rails (8) and between the basic rails (8) and the point rails (9), so that the interaction force between the slides (2) and the mounting frame (10) is kept within a certain range, and then the side grinding device (4) is controlled to always maintain the contact pressure with the basic rails (8) and the point rails (9) during grinding; The connecting assembly (7) includes a baffle (71), a vertical plate 1 (21) and a vertical plate 2 (22) are provided on the slide (2), the baffle (71) is located between the vertical plate 1 (21) and the vertical plate 2 (22), two support rods (72) are fixedly connected to the baffle (71), the support rods (72) pass through the vertical plate 1 (21) and are fixedly connected to the mounting frame (10), the support rods (72) are slidably connected to the vertical plate 1 (21), and a spring 1 (73) is sleeved on the support rod (72) between the mounting frame (10) and the vertical plate 1 (21); The adaptive device (3) includes an electric push rod (31), a sliding rheostat (32) and a guide rail (34). Two sliders (33) are provided on the slide (2). The bottom of the frame (1) is fixedly connected to the two guide rails (34). The sliders (33) are slidably connected to the corresponding guide rails (34). The electric push rod (31) is fixedly connected to the second vertical plate (22) of one of the slides (2), and its output shaft is fixedly connected to the second vertical plate (22) of the other slide (2). The sliding rheostat (32) is fixedly connected to the left slide (2), and its slide (35) is fixedly connected to the left baffle (71). The resistance data of the sliding rheostat (32) is input into the controller, thereby calculating the displacement of the baffle (71).

2. A point rail grinding device for a track maintenance vehicle according to claim 1, characterized in that: The side grinding device (4) comprises a motor (41) and a grinding wheel (42), wherein the motor (41) is fixedly connected to the mounting frame (10), the output shaft of the motor (41) is fixedly connected to a driving pulley (43), the grinding wheel (42) is vertically mounted on the bottom of the mounting frame (10) and is rotationally connected to the mounting frame (10), the top of the grinding wheel (42) is fixedly connected to a transmission pulley (44), and the driving pulley (43) and the transmission pulley (44) are connected via a belt.

3. The point rail grinding device for a track maintenance vehicle according to claim 1, characterized in that: The top surface grinding device (5) comprises a driven pulley (51), the driven pulley (51) being rotatably connected to a rotating seat (52) on a mounting frame (10), the driven pulley (51) being connected to a transmission pulley (44) via a belt, a rotating shaft (53) being provided on the inner side of the driven pulley (51) and being able to slide with the driven pulley and transmit torque, and a grinding disc (54) being provided at the bottom of the rotating shaft (53).

4. The point rail grinding device for a track maintenance vehicle according to claim 3, characterized in that: The rotating shaft (53) is provided with a spline, and the inner side of the driven pulley (51) is provided with a spline groove for the spline to slide. The top of the rotating shaft (53) is rotatably connected to a limit plate (55), and the limit plate (55) is provided with two guide rods (56). The guide rods (56) pass through a bracket (57) on the mounting frame (10) and are connected to a stopper (58). A second spring (59) is sleeved on the guide rod (56) between the bracket (57) and the limit plate (55).

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