Sanding trolley for assisting ramp starting of heavy haul railway

Abstract

The utility model discloses a stuccoing dolly that assists heavy haul railway ramp start, including sand storage box, sand unloading device, adjusting device, support device and clean push rolling device, sand storage box is located the upper side of sand unloading device, sand unloading device is connected with support device, adjusting device contacts with the side wall of sand unloading device, clean push rolling device is provided the lower side of support device, and the support device is connected with the support device. The adjusting device comprises a first adjusting rod, a second adjusting rod, a blocking piece, a supporting plate and adjusting pieces, the first adjusting rod is rotationally connected with the second adjusting rod, the second adjusting rod is connected with the blocking piece, the blocking piece makes contact with the sand discharging device, the supporting plate is connected with the supporting device, the adjusting pieces are arranged on the side wall of the supporting plate at intervals, and the second adjusting rod is detachably connected with the adjusting pieces. According to the sand paving machine, the sand discharging device, the adjusting device and the cleaning and pushing device are arranged, the sand discharging amount is adjusted through the adjusting device, the cleaning and pushing device cleans the rail surface and pushes and grinds the sand to be flat, sand paving operation integration is achieved, and the sand paving efficiency and the sand paving quality are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of railway transportation maintenance, in particular to a sand spreading trolley for assisting heavy-load railway ramp start-up. Background Art

[0002] With the development of railway transportation, heavy-load railway transportation has gradually become the mainstream. Heavy-loaded trucks with large axle weight and low deadweight are the current development direction of heavy-loaded trucks. Combined with the current status of heavy-load railways in China, heavy-load railway transportation lines have the characteristics of large altitude differences and large temperature differences, and there are many tunnels and bridges in the operating sections. Affected by line conditions and natural environment, heavy-load trains encounter bad weather such as rain and snow, which leads to reduced wheel-rail friction and idling of driving wheels. They need to stop and start on the uphill slope, and the staff get off the train to manually clean the track surface and lay sand to assist the train in starting on the slope. Due to the low work efficiency and uneven thickness of sand when manually cleaning the track and laying sand, the ramp start of heavy-loaded trains causes delays and rescue, which affects the order of railway traffic. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies in the above-mentioned prior art and provide a sand-spreading trolley for assisting heavy-load railway ramp starting. The trolley is provided with a sand-discharging device, an adjusting device and a cleaning and pushing device. According to the on-site conditions, the amount of sand discharged by the sand-discharging device is adjusted by the adjusting device so that the sand laying thickness of the track is appropriate. The cleaning and pushing device cleans the track surface before sand discharging. After sand discharging, the cleaning and pushing device pushes and rolls the sand to make it flat, thus realizing the integration of sand-spreading operations, improving the efficiency and quality of sand-spreading, and solving the problems of section delays and rescue caused by sand-spreading problems when heavy-load trains are starting on ramps.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a sand-spreading trolley for assisting heavy-load railway ramp starting, comprising a sand storage box, a sand discharging device, an adjusting device, a supporting device and a cleaning pushing and rolling device, wherein the sand storage box is located on the upper side of the sand discharging device, the sand discharging device is connected to the supporting device, the adjusting device contacts the side wall of the sand discharging device to adjust the size of the sand outlet of the sand discharging device, and the cleaning pushing and rolling device is arranged on the lower side of the supporting device, the adjusting device comprises a first adjusting rod, a second adjusting rod, a baffle, a first supporting plate and an adjusting member, the end of the first adjusting rod along the length direction is rotatably connected to the second adjusting rod, the end of the second adjusting rod away from the first adjusting rod is connected to the baffle, the side of the baffle away from the second adjusting rod is in contact with the side wall of the sand discharging device, the end of the first supporting plate along the length direction is connected to the top of the supporting device, the number of the adjusting members is multiple, and the multiple adjusting members are arranged on the side wall of the first supporting plate at intervals along the length direction of the first supporting plate, and the second adjusting rod is detachably connected to the adjusting member.

[0005] Preferably, the first adjusting rod is provided with a plurality of connecting holes, the plurality of connecting holes are arranged at intervals along the length direction of the first adjusting rod, and the plurality of connecting holes are located at an end of the first adjusting rod away from the second adjusting rod.

[0006] Preferably, the sand storage box is a U-shaped structure, and a connecting piece is provided on the side wall of the sand storage box near the top, the connecting piece is plug-in connected to the connecting hole, and the connecting piece passes through the connecting hole to fix the position of the first adjusting rod.

[0007] Preferably, the supporting device includes a second supporting plate, an armrest and a footrest, the armrest is detachably mounted on the upper side of the second supporting plate, the footrest is mounted on the side wall of the second supporting plate, and the footrest is rotatably connected to the side wall of the second supporting plate.

[0008] Preferably, the sand lowering device includes a sand lowering table and a sand lowering pipe, the sand lowering table is arranged on the upper side of the second support plate, the sand lowering pipe is arranged on the lower side of the second support plate, the bottom of the sand storage box is provided with a first discharge port and the bottom of the sand storage box is embedded in the sand lowering table, the side wall of the sand lowering table in contact with the baffle is provided with a second discharge port, the first discharge port is connected with the second discharge port, the top of the sand lowering pipe is connected with the second discharge port through the second support plate, and the bottom of the sand lower pipe is in contact with the track surface.

[0009] Preferably, the cleaning pushing and rolling device includes a cleaning brush and a walking mechanism, the top of the cleaning brush is connected to the lower end of the second support plate, the bottom of the cleaning brush is in contact with the track, the walking mechanism is installed on the lower side of the second support plate away from the end of the cleaning brush, the walking mechanism includes walking wheels and a fixed plate, the number of the fixed plates is multiple, the multiple fixed plates are spaced apart at the bottom of the second support plate, a walking wheel is installed between two adjacent fixed plates, and the walking wheel is an H-shaped structure.

[0010] Preferably, the sand spreading trolley further comprises a protective baffle, and the number of the protective baffles is multiple, and the multiple protective baffles are respectively arranged on the left and right sides of the lower sand pipe, and each of the protective baffles is connected to the second support plate.

[0011] Preferably, the armrest is a retractable structure.

[0012] Compared with the prior art, the utility model has the following advantages:

[0013] 1. The utility model is provided with a sand-laying device, an adjusting device and a cleaning and pushing device. According to the on-site conditions, the amount of sand laid by the sand-laying device is adjusted by the adjusting device so that the sand laying thickness of the track is appropriate. The cleaning and pushing device cleans the track surface before sand laying. After sand laying, the cleaning and pushing device pushes and rolls the sand to make it flat, thus realizing the integration of sand laying operations, improving the efficiency and quality of sand laying, and solving the problems of section delays and rescue caused by sand laying problems when heavy-loaded trains start on slopes.

[0014] 2. The utility model is provided with a first adjusting rod and a second adjusting rod. The first adjusting rod drives the second adjusting rod to adjust the height of the baffle. The up and down movement of the first adjusting rod can also drive the second adjusting rod to further adjust the height of the baffle, thereby adjusting the size of the sand outlet, thereby controlling the amount of sand output and achieving the purpose of freely setting the sand laying thickness.

[0015] 3. The handrail frame and the supporting device of the utility model are detachably connected, which saves the space occupied by the sand-laying trolley and is convenient to carry.

[0016] 4. The handrail frame of the utility model is a retractable structure. The height of the handrail frame can be adjusted according to the height of the staff, thereby improving the applicability of the sand spreading trolley.

[0017] The present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model.

[0019] Description of reference numerals:

[0020] 1—sand storage box; 2—connection hole; 3—first adjustment rod;

[0021] 4—second adjusting rod; 5—blocking piece; 6—first supporting plate;

[0022] 7—adjusting member; 8—second supporting plate; 9—handrail frame;

[0023] 10—foot support; 11—lower sanding table; 12—lower sanding tube;

[0024] 13—first discharge port; 14—second discharge port; 15—travel wheel;

[0025] 16—fixed plate; 17—protective baffle; 18—connecting piece;

[0026] 19—Cleaning brush. DETAILED DESCRIPTION

[0027] like Figure 1As shown, the utility model includes a sand storage box 1, a sand discharging device, an adjusting device, a supporting device and a cleaning pushing and rolling device. The sand storage box 1 is located on the upper side of the sand discharging device, the sand discharging device is connected to the supporting device, the adjusting device contacts the side wall of the sand discharging device to adjust the size of the sand outlet of the sand discharging device, and the cleaning pushing and rolling device is arranged on the lower side of the supporting device. The adjusting device includes a first adjusting rod 3, a second adjusting rod 4, a baffle 5, a first supporting plate 6 and an adjusting member 7. The end of the first adjusting rod 3 along the length direction is rotatably connected to the second adjusting rod 4, the end of the second adjusting rod 4 away from the first adjusting rod 3 is connected to the baffle 5, and the side of the baffle 5 away from the second adjusting rod 4 contacts the side wall of the sand discharging device, the end of the first supporting plate 6 along the length direction is connected to the top of the supporting device, and the number of adjusting members 7 is multiple, and the multiple adjusting members 7 are arranged on the side wall of the first supporting plate 6 at intervals along the length direction of the first supporting plate 6, and the second adjusting rod 4 is detachably connected to the adjusting member 7.

[0028] The first adjusting rod 3 is rotatably connected with the second adjusting rod 4 through a rotating shaft or the first adjusting rod 3 is hinged with the second adjusting rod 4. A plurality of adjusting members 7 are arranged in the vertical direction. Each two adjusting members 7 are spaced apart and located at different heights. When the second adjusting rod 4 is connected with different adjusting members 7, the height of the second adjusting rod 4 is also different, and the height of the baffle 5 connected with the second adjusting rod 4 is also different. The size of the sand outlet of the sand discharge device can be adjusted by adjusting the height of the baffle 5. When the height of the baffle 5 needs to be adjusted, the first adjusting rod 3 is pulled upward or downward, and the second adjusting rod 4 is located at the adjusting member 7 of the target height through the first adjusting rod 3, and the second adjusting rod 4 is connected with the adjusting member 7.

[0029] In a possible embodiment, the adjusting member 7 is a clamping member, the adjusting member 7 is elastic, a plurality of adjusting members 7 are arranged at intervals on the first support plate 6, and a plurality of adjusting members 7 are arranged along the height direction of the first support plate 6, the adjusting member 7 is opened on one side away from the first support plate 6, and the first adjusting member 3 is pulled upward or downward to push the second adjusting member 4 to move toward the adjusting member 7 of the target height, and the second adjusting member 4 is pushed to move into the adjusting member 7 of the target height by the first adjusting member 3 until the second adjusting member 4 is clamped in the adjusting member 7, and the height adjustment of the second adjusting member 4 is completed.

[0030] In another possible embodiment, the adjusting member 7 is a rotating shaft, and the second adjusting member 4 is provided with a through hole matching the size of the rotating shaft. The end of the adjusting member 7 along the length direction is fixedly connected to the side wall of the first support plate 6, and multiple adjusting members 7 are arranged at intervals on the side wall of the first support plate 6, and multiple adjusting members 7 are arranged along the height direction of the first support plate 6. An elastic limiting component is provided at the end of the adjusting member 7 away from the first support plate 6. When adjusting the height of the second adjusting member 4, the first adjusting member 3 is pulled outward, and the second adjusting member 4 is driven to move outward by the first adjusting member 3, and the second adjusting member 4 is disengaged from the current adjusting member 7, and then the first adjusting member 3 is pulled downward or upward to make the second adjusting member 4 reach the target height, and then the second adjusting member 4 is driven to move in the direction close to the first support plate 6 by the first adjusting member 3, so that the adjusting member 7 passes through the through hole of the second adjusting member 4, and the height adjustment of the second adjusting member 4 is completed.

[0031] The first adjusting rod 3 is provided with a plurality of connection holes 2 , which are arranged at intervals along the length direction of the first adjusting rod 3 , and are located at the end of the first adjusting rod 3 away from the second adjusting rod 4 .

[0032] The sand storage box 1 is a U-shaped structure. A connector 18 is provided near the top of the side wall of the sand storage box 1. The connector 18 is plug-in connected to the connecting hole 2. The connector 18 passes through the connecting hole 2 to fix the position of the first adjusting rod 3.

[0033] After the height adjustment of the second adjusting rod 4 is completed, the height of the baffle 5 can be further adjusted by rotating the second adjusting rod 4 up and down in the horizontal direction. The height of the bottom of the first adjusting rod 3 can be adjusted by connecting the connecting piece 18 with different connecting holes 2, and then the height of the baffle 5 can be adjusted by the second adjusting rod 4. The baffle 5 is fixedly connected to the end of the second adjusting rod 4 away from the first adjusting rod 3. When the height of the second adjusting rod 4 changes, the height of the baffle 5 changes synchronously. Therefore, by connecting the connecting piece 18 with connecting holes 2 of different heights, the height of the baffle 5 can be adjusted, that is, the size of the sand outlet of the sand discharge device can be adjusted.

[0034] A transparent sand box cover can be provided on the sand storage box 1, through which the amount of sand stored in the sand storage box 1 can be observed, and the transparent sand box cover also has the effect of preventing rain and moisture on rainy days.

[0035] In the embodiment in which the above-mentioned adjusting member 7 is a clamping member, the adjusting member 7 is rotatably connected to the first support plate 6, and the adjusting member 7 can rotate in the horizontal direction. The second adjusting rod 4 is clamped with the adjusting member 7 of the target height, and the first adjusting rod 3 is pushed upward or downward. The first adjusting rod 3 drives the adjusting member 7 clamped with the second adjusting rod 4 to rotate, and the second adjusting rod 4 rotates synchronously. The baffle 5 moves downward or upward synchronously under the drive of the second adjusting rod 4. After the baffle 5 moves to the target position, the connecting member 18 is passed through the connecting hole 2 matching the height of the connecting member 18, and a limiting component is set at the end of the connecting member 18 away from the storage box 1, so that the first adjusting rod 3 maintains the current height, then the height of the baffle 5 remains unchanged, and the size adjustment of the sand outlet of the sand discharging device is completed.

[0036] In the embodiment in which the above-mentioned adjusting member 7 is a rotating shaft, the second adjusting rod 4 is rotatably connected to the adjusting member 7, pushing the first adjusting rod 3 upward or downward, and the first adjusting rod 3 drives the second adjusting rod 4 to rotate around the adjusting member 7. When the second adjusting rod 4 rotates downward at the connection with the first adjusting rod 3, the baffle 5 moves upward. When the second adjusting rod 4 rotates upward at the connection with the first adjusting rod 3, the baffle 5 moves downward. After the baffle 5 moves to the target position, the position of the first adjusting rod 3 is fixed by the connecting member 18 and the connecting hole 2 matching the connecting member 18, so that the height of the baffle 5 is fixed, and the size adjustment of the sand outlet of the sand discharging device is completed.

[0037] Furthermore, the baffle 5 is slidably connected to the second adjustment rod 4, and a T-shaped slot is provided at the end of the second adjustment rod 4 near the baffle 5, and the T-shaped slot is perpendicular to the horizontal direction. A T-shaped slider is provided on the side of the baffle 5 near the second adjustment rod 4, and the T-shaped slider can slide up and down along the T-shaped slot to adjust the height of the baffle 5. After the height adjustment of the baffle 5 is completed, the position of the baffle 5 can be locked. Therefore, the size of the sand outlet of the sand discharge device can be adjusted by sliding the baffle 5 up and down along the T-shaped slot.

[0038] The supporting device includes a second supporting plate 8, an armrest 9 and a foot support 10. The armrest 9 is detachably mounted on the upper side of the second supporting plate 8. The foot support 10 is mounted on the side wall of the second supporting plate 8 and is rotatably connected to the side wall of the second supporting plate 8.

[0039] The second support plate 8 is provided with a through hole, which is located at the sand discharging device. The handrail frame 9 is detachably mounted on the upper side of the second support plate 8, and the handrail frame 9 is located on the side of the adjustment device away from the sand storage box 1. The sand spreading trolley can be controlled to move forward along the track through the handrail frame 9. When in use, the handrail frame 9 is installed on the second support plate 8. After use, the handrail frame 9 can be removed to save the space occupied by the sand spreading trolley.

[0040] A foot support accommodating chamber is provided on the side wall of the second support plate 8, and a connecting rod is provided in the foot support accommodating chamber, and a spring is provided on the connecting rod. A connecting hole is provided at one end of the foot support 10. After the connecting rod passes through the connecting hole on the foot support 10, a limiting component is installed at the end of the connecting rod away from the second support plate 8 to prevent the foot support 10 from slipping out of the connecting rod. When the sand-spreading trolley is working, the foot support 10 rotates around the connecting rod into the foot support accommodating chamber. At this time, the spring on the connecting rod is in a normal state, and the end of the spring contacts the side wall of the second support plate 8. When the sand-spreading trolley finishes working, the foot support 10 rotates around the connecting rod, and the end of the foot support 10 away from the connecting hole contacts the ground. At this time, the spring on the connecting rod is in a compressed state. The foot support 10 compresses the spring on the connecting rod so that the foot support 10 has an angle with the ground. The foot support 10, the ground and the cleaning pushing and rolling device form a triangular structure, so that the sand-spreading trolley can be stably supported on the ground.

[0041] The sand unloading device includes a sand unloading platform 11 and a sand unloading pipe 12. The sand unloading platform 11 is arranged on the upper side of the second support plate 8, and the sand unloading pipe 12 is arranged on the lower side of the second support plate 8. A first discharge port 13 is arranged at the bottom of the sand storage box 1, and the bottom of the sand storage box 1 is embedded in the sand unloading platform 11. A second discharge port 14 is arranged on the side wall of the sand unloading platform 11 in contact with the baffle 5. The first discharge port 13 is communicated with the second discharge port 14. The top of the sand unloading pipe 12 is communicated with the second discharge port 14 through the second support plate 8, and the bottom of the sand unloading pipe 12 is in contact with the track surface.

[0042] The lower sand table 11 is fixedly arranged on the second support plate 8, and a sand outlet channel is arranged in the lower sand table 11. The second support plate 8 is provided with a through hole at the second outlet 14, and the aperture of the through hole is consistent with the aperture of the lower sand pipe 12. The sand in the sand storage box 1 passes through the first outlet 13 and then reaches the second outlet 14 along the sand outlet channel in the lower sand table 11, passes through the sand outlet formed by the second outlet 14 and the baffle 5, and reaches the through hole of the second support plate 8, and then passes through the through hole of the second support plate 8 to reach the lower sand pipe 12, and the sand reaches the track surface through the lower sand pipe 12. The lower sand pipe 12 is made of a stainless steel casing with a rubber nozzle installed, and the stainless steel casing is connected to the second support plate 8, and a rubber nozzle is arranged near the track surface of the stainless steel casing.

[0043] The size of the baffle 5 matches the size of the side wall of the lower sand table 11, so that the baffle 5 can block the second discharge port 14. By adjusting the height of the baffle 5, the size of the blocking portion of the second discharge port 14 is adjusted, thereby achieving the purpose of adjusting the size of the sand discharge port.

[0044] Furthermore, a guide plate can be arranged on the upper side of the through hole of the second support plate 8. The guide plate is arranged on the side of the through hole of the second support plate 8 away from the second discharge port 14 to prevent sand from overflowing from the second discharge port 14 and ensure that all the sand flowing through the second discharge port 14 reaches the track surface through the lower sand pipe 12, thereby improving the utilization rate of the sand.

[0045] The cleaning pushing and rolling device includes a cleaning brush 19 and a traveling mechanism. The top of the cleaning brush 19 is connected to the lower end of the second support plate 8, and the bottom of the cleaning brush 19 is in contact with the track. The traveling mechanism is installed on the lower side of the second support plate 8 away from the end of the cleaning brush 19. The traveling mechanism includes traveling wheels 15 and fixed plates 16. There are multiple fixed plates 16, and multiple fixed plates 16 are spaced apart at the bottom of the second support plate 8. A traveling wheel 15 is installed between two adjacent fixed plates 16, and the traveling wheel 15 is an H-shaped structure.

[0046] The lower side of the second support plate 8 is provided with a cleaning brush 19, a lower sand pipe 12, and a running wheel 15 from front to back. The cleaning brush 19 first cleans the track surface, and then the sand reaches the track surface through the lower sand pipe 12. The running wheel 15 flattens the sand and the track surface to increase the friction of the track surface.

[0047] There are two fixed plates 16, which are fixedly connected to the second support plate 8. The walking wheel 15 is installed between the two fixed plates 16. There is a distance between the walking wheel 15 and the second support plate 8. When the walking wheel 15 moves along the track, the bottom of the lower sand pipe 12 and the cleaning brush 19 are in contact with the track surface.

[0048] The cleaning brush 19 adopts a detachable brush, so that the brush on the cleaning brush 19 can be replaced at any time, ensuring the cleaning efficiency of the cleaning brush 19 on the track surface.

[0049] The sand spreading trolley further includes a plurality of protective baffles 17 , which are respectively arranged on the left and right sides of the lower sand pipe 12 , and each protective baffle 17 is connected to the second support plate 8 .

[0050] The inner side wall of the lower part of the protective baffle 17 is in contact with the side wall of the track, and the top of the protective baffle 17 is connected to the second support plate 8. Multiple protective baffles 17 are respectively arranged on the left and right sides of the lower sand pipe 12 to prevent sand from sliding down after reaching the track surface through the lower sand pipe 12, or less sand is retained on the track surface due to external environmental factors.

[0051] The handrail frame 9 is a retractable structure.

[0052] The armrest frame 9 can be extended upward or downward. When the armrest frame 9 is extended upward, it can be suitable for workers with taller heights. When the armrest frame 9 is retracted downward, it can be suitable for workers with shorter heights. The armrest frame 9 is set as a retractable structure, which improves the applicability and comfort of the sand spreading trolley.

[0053] When in use, the sand storage box 1 is filled with sand, the sand output of the sand spreading trolley is determined according to the current environment and the track surface conditions, the height of the baffle 5 is adjusted according to the sand output of the sand spreading trolley, the first adjusting rod 3 is disengaged from the connecting piece 18, the first adjusting rod 3 is pulled, and the second adjusting rod 4 is driven to disengage from the adjusting piece 7 through the first adjusting rod 3, and then the position of the second adjusting rod 4 is determined according to the sand output, and the adjusting piece 7 of the target height is determined according to the position of the second adjusting rod 4, and the second adjusting rod 4 is driven by the first adjusting rod 3 to reach the adjusting piece 7 of the target height, so that the second adjusting rod 4 is connected to the adjusting piece 7 of the target height, and then the height of the baffle 5 is adjusted, the first adjusting rod 3 is pushed upward or downward, and the baffle 5 moves downward or upward synchronously. After the baffle 5 moves to the appropriate height, the connecting piece 18 is passed through the connecting hole 2 at the same height as the connecting piece 18, and the limiting component is installed at the end of the connecting piece 18 outside the connecting hole 2 to prevent the first adjusting rod 3 from sliding out of the connecting piece 18. At this point, the height adjustment of the baffle 5 is completed. After the sand reaches the track surface through the second discharge port 14 and the lower sand pipe 12, the running wheel 15 rolls the sand onto the track surface, increasing the friction of the track surface and the adhesion between the wheel and the rail, thus avoiding the problem of unsuccessful starting caused by idling of the locomotive.

[0054] The above is only a preferred embodiment of the present invention and does not constitute any limitation to the present invention. Any simple modification, change and equivalent structural transformation made to the above embodiments according to the technical essence of the present invention shall still fall within the protection scope of the technical solution of the present invention.

Claims

1. A sand spreading trolley for assisting heavy-load railway ramp start, characterized in that: The invention comprises a sand storage box (1), a sand discharging device, an adjusting device, a supporting device and a cleaning pushing and rolling device, wherein the sand storage box (1) is located on the upper side of the sand discharging device, the sand discharging device is connected to the supporting device, the adjusting device contacts the side wall of the sand discharging device to adjust the size of the sand outlet of the sand discharging device, the cleaning pushing and rolling device is arranged on the lower side of the supporting device, the adjusting device comprises a first adjusting rod (3), a second adjusting rod (4), a baffle (5), a first supporting plate (6) and an adjusting member (7), the end of the first adjusting rod (3) along the length direction is connected to the second adjusting rod (4) The rod (4) is rotatably connected, the end of the second adjusting rod (4) away from the first adjusting rod (3) is connected to the baffle (5), and the side of the baffle (5) away from the second adjusting rod (4) contacts the side wall of the sand lowering device, the end of the first supporting plate (6) along the length direction is connected to the top of the supporting device, the number of the adjusting members (7) is multiple, and the multiple adjusting members (7) are arranged on the side wall of the first supporting plate (6) at intervals along the length direction of the first supporting plate (6), and the second adjusting rod (4) and the adjusting member (7) are detachably connected.

2. A sand spreading trolley for assisting heavy-load railway ramp start according to claim 1, characterized in that: The first adjusting rod (3) is provided with a plurality of connection holes (2), the plurality of connection holes (2) are arranged at intervals along the length direction of the first adjusting rod (3), and the plurality of connection holes (2) are located at the end of the first adjusting rod (3) away from the second adjusting rod (4).

3. A sand spreading trolley for assisting heavy-load railway ramp start according to claim 2, characterized in that: The sand storage box (1) is of a U-shaped structure. A connecting piece (18) is provided on the side wall of the sand storage box (1) near the top. The connecting piece (18) is plug-in-connected to the connecting hole (2). The connecting piece (18) passes through the connecting hole (2) to fix the position of the first adjusting rod (3).

4. A sand spreading trolley for assisting heavy-load railway ramp start according to claim 1, characterized in that: The supporting device comprises a second supporting plate (8), an armrest frame (9) and a foot support (10), wherein the armrest frame (9) is detachably mounted on the upper side of the second supporting plate (8), and the foot support (10) is mounted on the side wall of the second supporting plate (8), and the foot support (10) is rotatably connected to the side wall of the second supporting plate (8).

5. A sand spreading trolley for assisting heavy-load railway ramp start according to claim 4, characterized in that: The sand lowering device comprises a sand lowering platform (11) and a sand lowering pipe (12), wherein the sand lowering platform (11) is arranged on the upper side of the second supporting plate (8), and the sand lowering pipe (12) is arranged on the lower side of the second supporting plate (8). The bottom of the sand storage box (1) is provided with a first discharge port (13), and the bottom of the sand storage box (1) is embedded in the sand lowering platform (11). The side wall of the sand lowering platform (11) in contact with the baffle (5) is provided with a second discharge port (14), the first discharge port (13) is connected to the second discharge port (14), the top of the sand lowering pipe (12) is connected to the second discharge port (14) through the second supporting plate (8), and the bottom of the sand lowering pipe (12) is in contact with the track surface.

6. A sand spreading trolley for assisting heavy-load railway ramp start according to claim 4, characterized in that: The cleaning pushing and rolling device comprises a cleaning brush (19) and a walking mechanism, wherein the top of the cleaning brush (19) is connected to the lower end of the second support plate (8), and the bottom of the cleaning brush (19) is in contact with the track. The walking mechanism is installed at the lower side of the second support plate (8) away from the end of the cleaning brush (19). The walking mechanism comprises a walking wheel (15) and a fixed plate (16). The number of the fixed plates (16) is multiple, and the multiple fixed plates (16) are arranged at intervals at the bottom of the second support plate (8). A walking wheel (15) is installed between two adjacent fixed plates (16), and the walking wheel (15) is an H-shaped structure.

7. A sand spreading trolley for assisting heavy-load railway ramp start according to claim 5, characterized in that: The sand spreading trolley further comprises a protective baffle (17), wherein the number of the protective baffles (17) is plural, and the plurality of protective baffles (17) are respectively arranged on the left and right sides of the lower sand pipe (12), and each of the protective baffles (17) is connected to the second support plate (8).

8. A sand spreading trolley for assisting heavy-load railway ramp start according to claim 4, characterized in that: The handrail frame (9) is a retractable structure.

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