Ground rail bottom slope leveling device

Abstract

The invention discloses a subway rail bottom slope leveling device which comprises two end blocks, a disc, a limiting shaft and a leveling assembly, and the leveling assembly comprises a top block, a sliding block, a top rotating shaft, a top rolling wheel, a first chain wheel, a motor, a second chain wheel, a third chain wheel, a bottom rotating shaft, a roller type cutter, a fourth chain wheel, a second chain and a first chain. According to the device, the roller type cutter and the top roller rotate at the same time and are matched with reciprocating adjustment of the height of the hook-shaped sliding block, self-adaptive movement of the leveling assembly is achieved while the rail cant is leveled, and therefore rapid leveling of the rail cant is completed; and meanwhile, the angle adjusting mechanism and the height adjusting mechanism are arranged in a matched mode, the leveling assembly slides on the two limiting shafts, it is guaranteed that the inclination angles of the top faces of all the rail bottom slopes are consistent while height adjustment of the rail bottom slopes is successfully achieved, the structure is exquisite and efficient, and the leveling efficiency and the leveling precision are greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of track construction equipment, in particular to a subway track bottom slope leveling device. Background Art

[0002] Subways have now become standard in large cities. The construction process, especially the laying of rails, is crucial to the safe and stable operation of the subway.

[0003] Among them, the rails are laid on the rail bottom slope, and the rail bottom slope is cast on the roadbed at equal intervals. During the construction of the rail bottom slope, due to manual operation, it is impossible to ensure that the top surface of the rail bottom slope is in a flat state. According to the design requirements of the rails, the top surface of each rail bottom slope may be required to be inclined at a certain angle, but its top surface is still in a flat state. At the same time, the height of each rail bottom slope also needs to be adjusted according to the design requirements of the rails. However, it is difficult to ensure that the inclination angles of several rail bottom slopes remain consistent when manually pouring concrete, and the height adjustment is also inaccurate, which will cause the laying of the rails to fail to achieve the desired stability level and even affect the service life of the rails.

[0004] Therefore, a subway rail bottom slope leveling device is proposed, which is used for leveling the rail bottom slope with high efficiency and high precision. Summary of the invention

[0005] The object of the present invention is to provide a subway rail bottom slope leveling device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a subway rail bottom slope leveling device, comprising two end blocks, the opposite surfaces of the two end blocks are rotatably connected to a disc via a rotating bolt, two limit shafts are fixedly connected between the two discs, and a leveling component is slidably connected to the limit shaft.

[0007] The leveling assembly includes a top block, a sliding block is fixedly connected to the bottom of the top block, a top recess is opened on the top of the top block, the top block is rotatably connected to a top rotating shaft at the top recess, a top rotating shaft is sleeved with a top roller at the top recess, a first sprocket is sleeved on the end of the top rotating shaft located outside the top block, a motor is arranged between the top block and the sliding block, a second sprocket and a third sprocket are sleeved on the movable end of the motor, the sliding block is rotatably connected to a bottom rotating shaft, a roller-type tool is sleeved on the bottom rotating shaft located in the sliding block, a fourth sprocket is sleeved on the bottom rotating shaft outside the sliding block, the fourth sprocket and the third sprocket are connected by a second chain, and the second sprocket and the first sprocket are connected by a first chain.

[0008] The back side of the end block is fixedly connected to a side block, the bottom of the side block is slidably connected to a hook-shaped slider, the top surface of the side block is rotatably connected to a second threaded shaft, the second threaded shaft is threadedly connected to the hook-shaped slider, the top end of the second threaded shaft is sleeved with a top turntable, the top surface of the side block is fixedly connected to a limiting folding block, and the upper bottom surface of the limiting folding block is in contact with the top surface of the top turntable.

[0009] The end block is also provided with an angle adjustment mechanism and a height adjustment mechanism for adjusting the height of the end block and the angle of the plane formed by the two limiting axes.

[0010] Preferably, side panels are fixedly connected to both sides of the bottom surface of the top block, and bristles are arranged at the bottom ends of the side panels.

[0011] Preferably, sliding openings are provided on both sides of the sliding block, and the limiting shaft passes through the sliding openings.

[0012] Preferably: the angle adjustment mechanism includes a telescopic shaft slidably connected to the edge of the end block located at the disk, the end of the telescopic shaft close to the disk is fixedly connected to a clamping block, the end of the telescopic shaft located on the back of the end block is fixedly connected to a stop block, a spring is provided on the telescopic shaft between the back of the end block and the stop block, a plurality of side recesses are provided on the arc side surface of the disk at equal intervals around its central axis, and the disk limits its own rotation by being clamped into the side recesses by the clamping blocks.

[0013] Preferably, a through hole is provided on the end block at the edge of the disc and passes through the front and back sides of the end block, the telescopic shaft passes through the through hole, and the stop block and the clamping block cannot pass through the through hole.

[0014] Preferably: the height adjustment mechanism includes a bottom cavity opened on the bottom surface of the end block and facing upward, the top surface of the end block extends into the bottom cavity and is rotatably connected to a first threaded shaft, a telescopic block is slidably connected to the bottom cavity, the first threaded shaft and the telescopic block are threadedly connected, and the end block controls the telescopic movement of the telescopic block by rotating the first threaded shaft to adjust the height of the end block.

[0015] Preferably: two limit rings are sleeved on the first threaded shaft, and the two limit rings are respectively located on the inner top surface of the bottom cavity and the top surface of the end block. A rotating handle is sleeved on the top end of the first threaded shaft, and a fifth sprocket is also sleeved on the top end of the first threaded shaft. The fifth sprockets on the two end blocks are connected by a third chain.

[0016] Preferably, the hook-shaped sliding block controls its own height by rotating the top turntable.

[0017] Preferably, the two limit shafts are slidably connected to a leveling assembly.

[0018] Preferably: the height of the hook-shaped slider away from the side block is not lower than the heights of other components on the end block, the third chain passes through the top recess, a through groove is provided at the bottom of the top block, and the motor is located in the through groove.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. This device uses the settings of end blocks, discs and leveling components, utilizes the simultaneous rotation of drum-type cutters and top rollers, and cooperates with the reciprocating adjustment of the height of the hook-shaped slider to achieve adaptive movement of the leveling component while leveling the rail bottom slope, thereby completing the rapid leveling of the rail bottom slope. At the same time, with the settings of the angle adjustment mechanism and the height adjustment mechanism, and because the leveling component slides on two limit shafts, the height adjustment of the rail bottom slope is successfully achieved while ensuring the consistency of the top surface inclination angle of each rail bottom slope. The structure is sophisticated and efficient, suitable for promotion and use in leveling the rail bottom slope, greatly improving the leveling efficiency and leveling accuracy.

[0021] 2. This device uses the third chain to connect the fifth sprockets on the two end blocks through the setting and cooperation of the third chain, the fifth sprocket, etc., and successfully realizes the simultaneous adjustment of the heights of the two end blocks. The structure is simple and the operating convenience of the height adjustment mechanism is improved.

[0022] 3. This device uses the side panels, bristles and other devices to cooperate with each other, and uses the bristles to follow the movement of the leveling components, so as to clean the rail bottom slope before and after the leveling operation, which is more conducive to the leveling of the roller-type tool and the cleaning of the rail bottom slope after leveling. The structure is simple and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present invention will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings. Obviously, the drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] in:

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0026] Figure 2 for Figure 1 The enlarged schematic diagram of point A in the middle;

[0027] Figure 3 A schematic diagram of a three-dimensional structure from another viewing angle of the present invention;

[0028] Figure 4 A top view of the present invention;

[0029] Figure 5 It is a structural schematic diagram of the leveling component in the present invention;

[0030] Figure 6 It is a right side view of the leveling assembly in the present invention;

[0031] Figure 7 It is a left side view of the leveling assembly in the present invention;

[0032] Figure 8 It is a front view of the leveling assembly in the present invention;

[0033] Fig. 9 It is an exploded schematic diagram of the angle adjustment mechanism and the height adjustment mechanism in the present invention;

[0034] Fig.10 It is a cross-sectional view of the end block of the present invention;

[0035] Fig.11 It is a schematic diagram of the application of the present invention.

[0036] In the figure: 1, end block; 11, rotating bolt; 12, bottom cavity; 2, top block; 21, sliding block; 22, side plate; 23, bristles; 24, top rotating shaft; 25, top roller; 26, first sprocket; 27, first chain; 28, second sprocket; 29, motor; 210, third sprocket; 211, second chain; 212, bottom rotating shaft; 213, fourth sprocket; 214, drum-type tool; 215, sliding opening; 216, top recess ; 3. Disc; 31. Limiting shaft; 32. Side notch; 4. Telescopic block; 41. First threaded shaft; 42. Turning handle; 43. Fifth sprocket; 44. Limiting ring; 5. Telescopic shaft; 51. Stop block; 52. Spring; 53. Block; 54. Through-mouth; 6. Side block; 61. Hook-shaped slider; 62. Second threaded shaft; 63. Top turntable; 64. Limiting folding block; 7. Third chain; 8. Rail; 9. Roadbed; 91. Rail bottom slope. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0039] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0040] Reference Figure 1-11 As shown, the present invention provides a technical solution for a subway rail bottom slope leveling device:

[0041] A subway track bottom slope leveling device comprises two end blocks 1, the opposite surfaces of the two end blocks 1 are rotatably connected to a disc 3 via a rotating bolt 11, wherein, Fig. 9 As shown, the cross section of the rotating bolt 11 is T-shaped, and two limiting shafts 31 are fixedly connected between the two disks 3, and a leveling component is slidably connected to the limiting shaft 31.

[0042] Further, see Figure 5-8 As shown, the leveling assembly includes a top block 2, a sliding block 21 is fixedly connected to the bottom of the top block 2, a top recess 216 is opened on the top of the top block 2, a top rotating shaft 24 is rotatably connected to the top block 2 at the top recess 216, a top rotating shaft 24 is sleeved with a top roller 25 located in the top recess 216, a first sprocket 26 is sleeved at the end of the top rotating shaft 24 located outside the top block 2, a motor 29 is arranged between the top block 2 and the sliding block 21, a second sprocket 28 and a third sprocket 210 are sleeved at the movable end of the motor 29, the sliding block 21 is rotatably connected to the bottom rotating shaft 212, the bottom rotating shaft 212 is located in the sliding block 21 and sleeved with a roller-type tool 214, the bottom rotating shaft 212 is located outside the sliding block 21 and is sleeved with a fourth sprocket 213, the fourth sprocket 213 and the third sprocket 210 are connected by a second chain 211, and the second sprocket 28 and the first sprocket 26 are connected by a first chain 27.

[0043] It should be noted that the rotation of the active end of the motor 29 will drive the top rotating shaft 24 and the drum-type cutter 214 to rotate synchronously. Figure 5 As shown, the sliding block 21 is configured to be an inverted U-shape, and the roller-type tool 214 is composed of a roller and transverse scrapers arranged thereon at equal intervals. This is the prior art and will not be described in detail herein.

[0044] Reference Fig. 9 As shown, the back side of the end block 1 is fixedly connected to the side block 6, the bottom of the side block 6 is slidably connected to the hook-shaped slider 61, the top surface of the side block 6 is rotatably connected to the second threaded shaft 62, the second threaded shaft 62 is threadedly connected to the hook-shaped slider 61, the top of the second threaded shaft 62 is sleeved with a top turntable 63, the top surface of the side block 6 is fixedly connected to the limiting folding block 64, and the upper bottom surface of the limiting folding block 64 is in contact with the top surface of the top turntable 63.

[0045] Reference Fig. 9 and Fig.10 It should be additionally explained that the side block 6 is configured to be an inverted U-shape, the side of the hook-shaped slider 61 close to the side block 6 slides at the bottom of the side block 6 , and the side away from the side block 6 is configured to be inclined upward away from the side block 6 .

[0046] Reference Fig. 9 As shown, the end block 1 is also provided with an angle adjustment mechanism and a height adjustment mechanism for adjusting the height of the end block 1 and the angle of the plane formed by the two limit axes 31 .

[0047] Through the arrangement of the end block 1, the disc 3 and the leveling component, etc., the device utilizes the simultaneous rotation of the drum-type tool 214 and the top roller 25, and cooperates with the reciprocating adjustment of the height of the hook-shaped slider 61, so as to realize the adaptive movement of the leveling component while leveling the rail bottom slope 91, thereby completing the rapid leveling of the rail bottom slope 91. At the same time, in conjunction with the arrangement of the angle adjustment mechanism and the height adjustment mechanism, and because the leveling component slides on the two limit shafts 31, the height adjustment of the rail bottom slope 91 is successfully achieved while ensuring that the top surface inclination angle of each rail bottom slope 91 is consistent. The structural arrangement is sophisticated and efficient, and is suitable for promotion and use when leveling the rail bottom slope 91, which greatly improves the leveling efficiency and leveling accuracy.

[0048] Reference Figure 7 As shown, in an optional embodiment, side panels 22 are fixedly connected to both sides of the bottom surface of the top block 2, and bristles 23 are provided at the bottom ends of the side panels 22.

[0049] Reference Figure 8 As shown, sliding openings 215 are formed on both sides of the sliding block 21 , and the limiting shaft 31 passes through the sliding openings 215 .

[0050] Reference Fig. 9 As shown, the angle adjustment mechanism includes a telescopic shaft 5 slidably connected to the edge of the end block 1 at the disk 3, a clamping block 53 is fixedly connected to one end of the telescopic shaft 5 close to the disk 3, and a stop block 51 is fixedly connected to the end of the telescopic shaft 5 located on the back of the end block 1. A spring 52 is provided on the telescopic shaft 5 between the back of the end block 1 and the stop block 51. A plurality of side recesses 32 are provided on the arc side surface of the disk 3 at equal intervals around its central axis, and the disk 3 is clamped into the side recess 32 by the clamping block 53 to limit its own rotation.

[0051] It should be noted that a through hole 54 is provided on the end block 1 at the edge of the disk 3 and passes through the front and back sides of the end block 1 . The telescopic shaft 5 passes through the through hole 54 , while the stop block 51 and the clamping block 53 cannot pass through the through hole 54 .

[0052] Reference Fig. 9 As shown, the height adjustment mechanism includes a bottom cavity 12 opened on the bottom surface of the end block 1 and facing upward. The top surface of the end block 1 extends into the bottom cavity 12 and is rotatably connected to a first threaded shaft 41. A telescopic block 4 is slidably connected to the bottom cavity 12. The first threaded shaft 41 and the telescopic block 4 are threadedly connected. The end block 1 controls the telescopic movement of the telescopic block 4 by rotating the first threaded shaft 41 to adjust the height of the end block 1.

[0053] Among them, it should be additionally explained that two limit rings 44 are sleeved on the first threaded shaft 41, and the two limit rings 44 are respectively located on the inner top surface of the bottom cavity 12 and the top surface of the end block 1, and a rotating handle 42 is sleeved on the top end of the first threaded shaft 41, and a fifth sprocket 43 is also sleeved on the top end of the first threaded shaft 41, and the fifth sprockets 43 on the two end blocks 1 are connected by a third chain 7.

[0054] Reference Figure 1 and Figure 2 As shown, the hook-shaped slider 61 controls its own height by rotating the top turntable 63, and the two limit shafts 31 are slidably connected to a leveling component.

[0055] Reference Fig.11 As shown, the height of the hook-shaped slider 61 away from the side block 6 is not lower than the height of other components on the end block 1. Figure 1 and Figure 6 As shown, the third chain 7 passes through the top notch 216, a through slot is provided at the bottom of the top block 2, and the motor 29 is located in the through slot.

[0056] This device utilizes the third chain 7 to connect the fifth sprocket 43 on the two end blocks 1 through the arrangement and cooperation of the third chain 7, the fifth sprocket 43, etc., and successfully realizes the simultaneous adjustment of the heights of the two end blocks 1. The structure is simple and the operating convenience of the height adjustment mechanism is improved.

[0057] Through the arrangement and cooperation of the side panels 22, bristles 23, etc., the device utilizes the bristles 23 to follow the movement of the leveling component, thereby cleaning the rail bottom slope 91 before and after the leveling operation, which is more conducive to the leveling of the roller-type tool 214 and the cleaning of the rail bottom slope 91 after leveling, and has a simple structure and high efficiency.

[0058] Now, the working principle of this device is explained through its use process: Fig.11As shown, first of all, it is necessary to briefly describe the working environment of the device. In normal form, the rails 8 are laid on the rail bottom slope 91, and the rail bottom slope 91 is cast on the roadbed 9 at equal intervals. During the construction of the rail bottom slope 91, due to manual operation, it is impossible to ensure that the top surface of the rail bottom slope 91 is in a flat state. According to the design requirements of the rails 8, the top surface of each rail bottom slope 91 may be required to be inclined at a certain angle, but its top surface is still in a flat state. At the same time, the height of each rail bottom slope 91 also needs to be adjusted according to the design requirements of the rails 8. However, it is difficult to ensure that the inclination angles of several rail bottom slopes 91 remain consistent during manual casting, and the height adjustment is not accurate, which will cause the laying of the rails 8 to fail to achieve the desired stability level and even affect the service life of the rails 8. The application of the device is used to efficiently adjust the rail bottom slope 91, as shown below:

[0059] When using the device, first remove the rail 8 from the rail bottom slope 91, which is a prior art and will not be described in detail here. Place the rail 8 on top of two hook-shaped sliders 61 and the top roller 25, and place two end blocks 1 on both sides of several rail bottom slopes 91 to ensure that the bottom surface of the end block 1 is flat. This can be done by padding with a steel block with a flat top surface. The steel block is a prior art and will not be described in detail here.

[0060] When it is necessary to adjust the top surfaces of several rail bottom slopes 91 to a certain angle and keep them consistent, the following operations need to be performed first: press the push block 51, the spring 52 will be compressed, the telescopic shaft 5 will move from the back side of the end block 1 to the front side, and slide in the through-hole 54, so that the block 53 extends out of the side recess 32. At this time, the rough surface formed by the side recess 32 on the arc side of the disk 3 can be used to easily rotate the disk 3 to adjust the angle of the plane formed by the two limit shafts 31 on the disk 3. Since the side recesses 32 on the arc side of the disk 3 are arranged at equal intervals around the central axis of the disk 3, it can be used The rotation angle of the disk 3 is determined by the number of side recesses 32 that are rotated from the clamping block 53, so that the angle adjustment is more precise and the operation is simple. When the adjustment is in place, the block 51 is released, and under the elastic action of the spring 52, the clamping block 53 is re-inserted into the side recess 32 to complete the fixation of the disk 3 after the angle adjustment. It should be supplemented that the disks 3 on the two end blocks 1 need to be adjusted at the same time, and the other disk 3 does not need to be manually rotated. It is only necessary to press the block 51 to disengage the clamping block 53 thereon from the side recess 32. After the adjustment is completed, the two blocks 51 stop pressing at the same time.

[0061] When it is necessary to adjust the height of several rail bottom slopes 91, the following operations need to be performed first: turn the rotating handle 42 to make the first threaded shaft 41 start to rotate. Since the first threaded shaft 41 and the telescopic block 4 are threadedly connected, and the telescopic block 4 is located in the bottom cavity 12, the telescopic movement of the telescopic block 4 is controlled, thereby completing the precise adjustment of the height of the end block 1. At the same time, since the fifth sprockets 43 on the two end blocks 1 are connected by the third chain 7, that is, during the adjustment process, only the rotating handle 42 on the end block 1 on one side needs to be rotated to complete the simultaneous adjustment of the height of the two end blocks 1.

[0062] When the angle of the plane formed by the two limit shafts 31 and the height of the end block 1 are adjusted, the leveling operation can be performed, as follows:

[0063] Start the motor 29. The rotation of the output end of the motor 29 will drive the second sprocket 28 and the third sprocket 210 to start rotating. After the transmission of the first chain 27 and the second chain 211, the first sprocket 26 and the fourth sprocket 213 will start rotating, thereby driving the top rotating shaft 24 and the bottom rotating shaft 212 to start rotating, that is, the drum-type tool 214 starts to rotate and grind, and the top roller 25 starts to rotate. It should be supplemented that during the above operation, the user needs to repeatedly adjust the height of the hook-shaped slider 61, that is, by rotating the top turntable 63, the second threaded shaft 62 starts to rotate. Since the second threaded shaft 62 and the hook-shaped slider 61 are threadedly connected, the height of the hook-shaped slider 61 is adjusted. Since the top surface of the side of the hook-shaped slider 61 away from the side block 6 is in contact with the bottom surface of the rail 8 at the beginning, the purpose of the reciprocating adjustment of the height of the hook-shaped slider 61 is to make The top roller 25 is in intermittent contact with the bottom surface of the rail 8. The hook-shaped slider 61 is raised so that the top roller 25 is not in contact with the rail 8, and the hook-shaped slider 61 is lowered so that the top roller 25 is in contact with the rail 8. The intermittent contact between the top roller 25 and the rail 8 is because: since the top roller 25 is always in a rotating state, and the drum-type tool 214 needs time to grind the rail bottom slope 91 to make it smooth. If the top roller 25 continues to rotate, the wear between it and the rail 8 will increase significantly, which is not conducive to the long-term use of the device. When the top roller 25 is not in contact with the rail 8, the drum-type tool 214 grinds the rail bottom slope 91 at that location. When the top roller 25 is in contact with the rail 8, due to the rotation of the top roller 25, the leveling component has a tendency to slide on the limit shaft 31, so that the leveling component can adaptively move while leveling the rail bottom slope 91, greatly improving the leveling efficiency of the device.

[0064] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A subway rail bottom slope leveling device, characterized in that: It comprises two end blocks (1), the opposite surfaces of the two end blocks (1) are rotatably connected to disks (3) via rotating bolts (11), two limiting shafts (31) are fixedly connected between the two disks (3), and a leveling assembly is slidably connected to the limiting shafts (31); The leveling assembly comprises a top block (2), the bottom of the top block (2) is fixedly connected to a sliding block (21), the top of the top block (2) is provided with a top recess (216), the top block (2) is rotatably connected to a top rotating shaft (24) located at the top recess (216), the top rotating shaft (24) is located in the top recess (216) and is sleeved with a top roller (25), a motor (29) is provided between the top block (2) and the sliding block (21), the sliding block (21) is rotatably connected to a bottom rotating shaft (212), the bottom rotating shaft (212) is located in the sliding block (21) and is sleeved with a roller-type tool (214), and the rotation of the movable end of the motor (29) drives the top rotating shaft (24) and the roller-type tool (214) to rotate simultaneously.

2. A subway rail bottom slope leveling device according to claim 1, characterized in that: The end of the top rotating shaft (24) located outside the top block (2) is sleeved with a first sprocket (26), the movable end of the motor (29) is sleeved with a second sprocket (28) and a third sprocket (210), the bottom rotating shaft (212) is located outside the sliding block (21) and is sleeved with a fourth sprocket (213), the fourth sprocket (213) and the third sprocket (210) are connected via a second chain (211), and the second sprocket (28) and the first sprocket (26) are connected via a first chain (27); The back side of the end block (1) is fixedly connected to a side block (6), the bottom of the side block (6) is slidably connected to a hook-shaped slider (61), the top surface of the side block (6) is rotatably connected to a second threaded shaft (62), the second threaded shaft (62) is threadedly connected to the hook-shaped slider (61), the top end of the second threaded shaft (62) is sleeved with a top turntable (63), the top surface of the side block (6) is fixedly connected to a limit folding block (64), the bottom surface of the upper layer of the limit folding block (64) is in contact with the top surface of the top turntable (63); The end block (1) is also provided with an angle adjustment mechanism and a height adjustment mechanism for adjusting the height of the end block (1) and the angle of the plane formed by the two limiting axes (31).

3. A subway rail bottom slope leveling device according to claim 2, characterized in that: Side plates (22) are fixedly connected to both sides of the bottom surface of the top block (2), and bristles (23) are arranged at the bottom ends of the side plates (22). Sliding openings (215) are provided on both sides of the sliding block (21), and the limiting shaft (31) passes through the sliding openings (215).

4. A subway rail bottom slope leveling device according to claim 3, characterized in that: The angle adjustment mechanism comprises a telescopic shaft (5) slidably connected to the edge of the end block (1) at the disk (3); a clamping block (53) is fixedly connected to one end of the telescopic shaft (5) close to the disk (3); a stopper (51) is fixedly connected to the end of the telescopic shaft (5) located at the back of the end block (1); a spring (52) is arranged on the telescopic shaft (5) between the back of the end block (1) and the stopper (51); a plurality of side recesses (32) are provided on the arc side surface of the disk (3) at equal intervals around its central axis; the disk (3) is restricted from rotating by being clamped into the side recesses (32) by the clamping block (53).

5. The subway rail bottom slope leveling device according to claim 4, characterized in that: The end block (1) is provided with a through opening (54) at the edge of the disc (3) and passes through the front and back sides of the end block (1); the telescopic shaft (5) passes through the through opening (54); and the stop block (51) and the clamping block (53) cannot pass through the through opening (54).

6. A subway rail bottom slope leveling device according to claim 2 or 5, characterized in that: The height adjustment mechanism comprises a bottom cavity (12) opened on the bottom surface of the end block (1) and facing upwards; the top surface of the end block (1) extends into the bottom cavity (12) and is rotatably connected to a first threaded shaft (41); a telescopic block (4) is slidably connected to the bottom cavity (12); the first threaded shaft (41) and the telescopic block (4) are threadedly connected; the end block (1) controls the telescopic movement of the telescopic block (4) by rotating the first threaded shaft (41) to adjust the height of the end block (1).

7. A subway rail bottom slope leveling device according to claim 6, characterized in that: Two limiting rings (44) are sleeved on the first threaded shaft (41), and the two limiting rings (44) are respectively located on the inner top surface of the bottom cavity (12) and the top surface of the end block (1). A rotating handle (42) is sleeved on the top end of the first threaded shaft (41). A fifth sprocket (43) is also sleeved on the top end of the first threaded shaft (41). The fifth sprockets (43) on the two end blocks (1) are connected via a third chain (7).

8. The subway rail bottom slope leveling device according to claim 1, characterized in that: The hook-shaped sliding block (61) controls its own height by rotating the top rotating disk (63).

9. A subway rail bottom slope leveling device according to claim 8, characterized in that: The two limiting shafts (31) are slidably connected to a leveling component.

10. A subway rail bottom slope leveling device according to claim 1 or 9, characterized in that: The height of the hook-shaped slider (61) away from the side block (6) is not lower than the height of other components on the end block (1), the third chain (7) passes through the top notch (216), a through groove is formed at the bottom of the top block (2), and the motor (29) is located in the through groove.

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