A rail-mounted flat storage device

Abstract

The present application relates to a new type of track type flat warehouse device, including first track, second track and trolley, the second track is parallel with the first track and is located above the first track, the first track and the second track are provided with the bottom layer sliding block on the sliding, the bottom layer sliding block is installed on the third track which can move up and down, the locking structure is arranged between the bottom layer sliding block and the third track, the chassis is installed between the third track on both sides, the scraper seat is also arranged on the chassis, the side sliding block is arranged on the second track, the trolley includes the car body and the driving motor, the car body and the scraper seat are connected through the ball hinge to transmit power. When the grain surface height in the warehouse changes, the height of the chassis which crosses the full width of the warehouse changes as a whole, the power mechanism on the chassis and the auxiliary power provided by the trolley together push the scraper to walk and realize flat warehouse. The present application also has the advantages of high safety factor, stable structure, no flat warehouse dead angle, not easy to leave the track mark on the grain surface, and can be stored in a corner of the warehouse during idle time.

Description

Technical Field

[0001] This invention relates to a leveling device, specifically a track-mounted leveling device. Background Technology

[0002] The leveling of grain storage is mostly done manually, which is not only slow, wasteful of labor, and labor-intensive, but also makes it difficult to guarantee the quality of leveling. In particular, for grain piles with large height differences, leveling machines are needed to achieve leveling.

[0003] Chinese patent application number 2019113011647 discloses a grain leveling machine, including two tracks installed on both sides of the inner wall of a grain silo and a base plate located inside the tracks. Track wheels are installed on both sides of the base plate, and a motor is mounted on the base plate to drive the track wheels to rotate along the tracks. A leveling plate is provided at the lower end of the base plate. Leveling is achieved by the base plate moving along the tracks, causing the leveling plate to move along the length of the grain silo. Simultaneously, the leveling plate can be driven by a hydraulic rod to move up and down relative to the tracks to adjust the leveling height. In this prior art document, to avoid insufficient friction causing difficulty in moving the leveling device, a threaded rod and a propulsion motor are also provided between the base plate and one end wall along the length of the grain silo, providing additional power for the movement of the base.

[0004] The shortcomings of the existing technology are as follows: First, the grain silo is quite wide, and the flattening plate, which is the same width as the grain silo, experiences very high resistance during the actual leveling process; second, when the grain level inside the grain silo changes with the seasons and the type of grain being stored, if the flattening plate extends too far downwards, the overhanging length of the flattening plate is large, and the overturning moment on the bottom plate is large, which can easily lead to the bottom plate overturning and causing an accident; third, the threaded rod can only rotate along its own axis, but cannot be moved to the corners of the grain silo. The threaded rod, placed in the middle of the grain silo, divides the internal space of the grain silo along its length, and the work of grain storage, storage, aisle plate placement, and grain surface treatment will all be obstructed by the threaded rod, which is very inconvenient; fourth, the grain silo is quite long, and the processing and design of the threaded rod also presents challenges. Summary of the Invention

[0005] The purpose of this invention is to provide a track-type leveling device to overcome the shortcomings of existing track-type leveling devices.

[0006] Therefore, the track-type leveling device of the present invention adopts the following technical solution: A track-type leveling device includes two first tracks installed on both sides of the inner wall of a grain silo. The height of the first tracks corresponds to the grain loading line of the silo. A base frame and a first drive unit for driving the base frame to move along the first tracks are provided between the two first tracks. A second track is also provided on both sides of the inner wall of the grain silo. The second track is parallel to the first track and located above the first track. A bottom slider is slidably arranged on the first and second tracks. A third track is installed on the bottom slider. A surface slider is installed in the third track. The base frame is installed between the surface sliders on both sides. A scraper seat that can slide along the base frame is also provided. The second track is slidably provided with side sliders, and two sets of the side sliders are slidably provided on each second track, with the two sets of side sliders located on both sides of the surface slider. The side sliders are used to clamp and fix the third track from both sides. It also includes a trolley, which includes a chassis and a body that can float up and down relative to the chassis. The chassis is equipped with rollers that can roll along the grain surface, and the chassis is also equipped with a drive motor for driving the rollers to rotate. The body and the scraper seat are connected by a ball joint to transmit power, and the body and the scraper seat are detachably connected.

[0007] Furthermore, the third track can move up and down relative to the bottom slider, and a locking structure is provided between the bottom slider and the third track to fix their relative positions; the surface slider is installed in the third track in a guideable manner in the up and down direction.

[0008] Furthermore, the third track is fixed on the bottom slider, and the surface slider is installed in the third track in a guideable vertical direction. The lower end of the third track is not lower than the lower end of the first track. The surface slider is L-shaped and is installed in the third track through a horizontal section and fixed to the base frame through a vertical section.

[0009] Furthermore, a dovetail groove three is formed on the bottom slider, and the part of the third track that is inserted into the bottom slider is a dovetail-shaped locking block. The dovetail-shaped locking block matches the shape of the dovetail groove three and is inserted into it in a guided movement. The locking structure includes a toothed structure and a locking tongue that can be inserted between two adjacent teeth of the toothed structure. The toothed structure is formed at the bottom of the dovetail groove three and is located in the middle of the third track.

[0010] Furthermore, the back of the third track is provided with multiple locking tongues, which are spaced apart along the vertical direction; the locking tongues are electromagnetic locking tongues that retract when energized and extend when de-energized.

[0011] Furthermore, a floating connection structure is provided between the chassis and the vehicle body. The floating connection structure includes a guide rod and a guide column. The guide rod is fixed on one of the chassis and the vehicle body, and the guide column is fixed on the other. The guide rod is inserted into the guide column. The end of the guide rod is provided with a protrusion, and the corresponding end of the guide column is provided with an anti-detachment section to prevent the protrusion from detaching from the guide column. An elastic pad is provided on the inner circumference of the anti-detachment section, and the inner diameter of the elastic pad matches the size of the guide rod.

[0012] Furthermore, the floating connection structure is located in the middle of the chassis; the three sides of the anti-detachment section are provided with grooves for the corresponding parts of the elastic pad to be embedded; a tension spring is provided between the chassis and the vehicle body.

[0013] Furthermore, the vehicle is a tracked vehicle with two sets of rollers at the lower end of the chassis. The drive motor is used to drive one set of rollers to rotate, and a track is provided between the two sets of rollers to transmit power.

[0014] Furthermore, the base frame has grooves on both sides, and transverse track wheels are installed on both sides of the scraper seat. The transverse track wheels are embedded in the grooves. A transverse drive motor for driving the transverse track wheels to rotate on the base frame is also installed on the scraper seat. A dovetail groove is opened in the middle of the third track. The cross-sectional shape of the surface slider is adapted to the dovetail groove. The ball joint's ball head is hinged to the side of the scraper seat.

[0015] Furthermore, the side slider includes a clamping part, and the two sides of the third track are provided with protruding ridges. The clamping part is provided with a slot that matches the shape of the protruding ridges. The clamping part is connected to the third track by bolts. The bottom of the slot and the two side walls of the third track are provided with corresponding bolt holes. The inner side of the third track is provided with a recess around the bolt holes for the bolt head to be fully embedded. The bottom slider is installed on the first track and the second track in a wrapping manner from the outside. The lower side of the first track and the upper side of the second track are provided with a second groove. The bottom slider includes a claw that is adapted to the shape of the second groove to be engaged therein. A roller is installed on the claw. When the bottom slider moves along the first track and the second track, the roller rolls in the second groove. A ball is embedded on the side of the side slider that contacts the second track. The ball protrudes from the corresponding side of the side slider to roll along the second track.

[0016] Compared with the prior art, the advantages and beneficial effects of the present invention are as follows: 1. In this invention, a second track is provided above the first track. When the grain level changes within the grain silo, the entire base frame moves up and down to maintain a relatively constant height between the scraper seat and the grain surface. Then, side sliders connect the first, second, and third tracks as a single unit, ensuring that the force on the scraper seat is evenly distributed across all three tracks. Since the overall height of the base frame, spanning the entire width of the grain silo, changes, the overturning moment on the base frame is smaller compared to cases where only the scraper seat moves up and down. Furthermore, the even distribution of force across the first and second tracks enhances the safety and structural stability of this invention.

[0017] 2. The trolley is only used to push or pull the scraper seat, providing auxiliary power for its movement. The leveling position is adjusted by moving the scraper seat laterally and longitudinally along the track. This ensures that there are no blind spots in the leveling work within the grain silo and provides sufficient power for the scraper seat to move, preventing it from becoming immobile due to insufficient power. Furthermore, the trolley, which only provides auxiliary power, has a simple structure, is relatively small and lightweight, and leaves shallow ruts when moving along the grain surface. Because it does not require turning, it also avoids leaving deep turning marks on the grain surface.

[0018] 3. The trolley moves along the track. When leveling is not required, the scraper seat can be pushed to a corner of the grain silo, and the trolley will move accordingly, occupying little space. The ball joint between the trolley and the scraper seat can also be removed. Therefore, this invention also has the effect of not obstructing grain entry and exit, the placement of walkway panels, and grain surface treatment.

[0019] 4. When the trolley travels along the grain surface, the body floats relative to the chassis. Therefore, when the trolley travels on uneven grain surfaces, the power of the trolley can still be transmitted to the scraper seat through the ball joint, without affecting its function of providing auxiliary power.

[0020] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of a first embodiment of the track-type leveling device of the present invention; Figure 2 This is a magnified view of a portion of point A; Figure 3 This is a schematic diagram of the side slider structure; Figure 4 This is a cross-sectional view of the area where the third track mates with the bottom slider. Figure 5This is a structural schematic diagram of a tracked vehicle; Figure 6 This is a cross-sectional view of the floating connection structure; Figure 7 This is a magnified view of a portion of point B. Figure 8 This is a schematic diagram of the surface slider in a second embodiment of the track-type leveling device of the present invention; The components are as follows: 1. Grain bin; 2. First track; 3. Bottom slider; 4. Third track; 5. Surface slider; 6. Tracked trolley; 7. Base frame; 8. Second track; 9. Scraper seat; 10. Side slider; 11. Ball joint; 13. Floating connection structure; 31. Claw; 41. Dovetail groove one; 42. Protruding ridge; 43. Limiting end; 51. Horizontal section; 52. Vertical section; 61. Chassis; 62. Body; 63. Roller; 64. Drive motor; 65. Track; 71. Groove one; 81. Dovetail groove two; 91. Lateral track wheel; 101. Clamping block; 102. Clamping block; 103. Slot; 131. Guide rod; 132. Guide column; 133. Protruding section; 134. Anti-detachment section; 135. Elastic pad; 136. Groove three. Detailed Implementation

[0022] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0023] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0024] Embodiment 1 of the track-type leveling device of the present invention: The specific structure of a track-type leveling device of the present invention is as follows: Figures 1 to 7As shown, the system includes a first track 2 extending along the length of the grain silo 1. A bottom slider 3, which can slide along the first track 2, is mounted on the first track 2. A third track 4, which can move up and down, is mounted on the bottom slider 3. A surface slider 5, which can slide along the third track 4, is mounted on the third track 4. A base frame 7 is installed between the surface sliders 5 on both sides of the grain silo 1. A scraper seat 9, which can move along the guide rail, is mounted on the base frame 7. The track-type leveling device of the present invention also includes a tracked trolley 6 that can travel along the grain surface. The tracked trolley 6 is connected to the scraper seat 9 for force transmission. A first drive unit drives the bottom slider 3 to slide along the first guide rail 2 to adjust the position of the scraper seat 9 in the length direction of the grain silo. The first drive unit is the main power mechanism for driving the base frame 7 to move. A second drive unit drives the scraper seat 9 to move along the guide rail 7 to adjust the position of the scraper seat 9 in the width direction of the grain silo 1. The second drive unit functions when adjusting the leveling width range. A third drive unit drives the surface slider 5 to move along the guide rail 4 to adjust the overall height of the base frame 7 while keeping the height of the third track 4 constant. When leveling operations are required, leveling scrapers can be installed on scraper seat 9 to carry out the operation. Tracked trolley 6 provides additional power for the movement of scraper seat 9, and scraper seat 9 guides tracked trolley 6.

[0025] In this embodiment, the base frame 7 has grooves 71 on both sides, and the scraper seat 9 has transverse track wheels 91 on both sides, which are embedded in the grooves 71. In this configuration, the scraper seat 9 is suspended below the base frame 7, and there is a guiding relationship between the scraper seat 9 and the base frame 7.

[0026] A second track 8 is also provided along the length of the grain silo 1. The height of the first track 2 is consistent with the grain loading line of the grain silo 1 to ensure that the first track 2 will not be buried by grain. The second track 8 is located above the first track 2, serving as an auxiliary fixation. Side sliders 10 are provided on the second track 8, and each second track 8 has two sets of side sliders 10, with the two sets of side sliders 10 located on both sides of the bottom slider 3. The side sliders 10 are used to clamp the third track 4 to connect the first track 2, the second track 8, and the third track 4 into one unit. In other embodiments, the side sliders 10 can also be provided on both the first track 2 and the second track 8 to further increase the structural strength.

[0027] In this embodiment, a dovetail groove 41 is formed on the third track 4, and the surface slider 5 is fitted into the dovetail groove 41. A dovetail groove 81 is provided on the inner side of the second track 8, and the side slider 10 is fitted into the dovetail groove 81 by a locking block 101 and can move accordingly. The two side sliders 10 clamp the third track 4 from both sides to evenly transfer the force on the third track 4 to the first track 2 and the second track 8, ensuring the stability of the overall structure.

[0028] To ensure that the two side sliders 10 can clamp the third track 4, protrusions 42 are provided on both sides of the third track 4. The side sliders 10 include clamping blocks 102 that protrude outward from the clamping blocks 101. The clamping blocks 102 also have grooves 103 that match the shape of the protrusions 42 on the side facing the surface slider 5. When the side sliders 10 clamp the third track 4 from both sides, the protrusions 42 on both sides of the third track 4 are engaged in the corresponding grooves 103 to restrict the degree of freedom of the third track 4 and the side sliders 10 in the direction perpendicular to the wall of the grain silo 1.

[0029] The bottom of the slot 103 and the protrusion 42 are respectively provided with bolt holes. After the protrusion 42 is inserted into the slot 103, the side slider 10 and the third track 4 can be connected by passing a bolt through the two bolt holes. It should be emphasized that the inner side of the third track 4 is provided with a groove at the opening of the bolt hole. The head of the bolt is completely sunk into the groove. Therefore, the installation of the bolt will not affect the sliding of the surface slider 5 in the third track 4.

[0030] Ball bearings are embedded on both the upper and lower surfaces of the side slider 10 to reduce the frictional resistance when the side slider 10 moves along the second track 8.

[0031] The third track 4 also includes a lower limiting end 43, which can limit the downward sliding position of the surface slider 5 and prevent the surface slider 5 from leaving the third track 4.

[0032] In this embodiment, grooves 2 are provided on the lower end face of the first track 2 and the upper end face of the second track 8. The bottom slider 3 is relatively long, and its two claws 31 at its upper and lower ends extend into the corresponding grooves 2. This design helps to increase the bonding strength between the bottom slider 3, the first track 2, and the second track 8. Rollers are installed on the claws 31. When the bottom slider 3 moves along the first track 2, the rollers roll over the grooves 2 to reduce the frictional resistance of the movement. A common drive motor is used as the first drive unit to drive the rollers to rotate in the grooves 21. The rotation of the rollers drives the bottom slider 3 to move along the first track 2 and the second track 8. In this structure, the power transmitted by the tracked trolley 6 will push the scraper seat 9 and the base frame 7 to translate, and the scraper seat 9 will not flip or twist.

[0033] The purpose of the vertical movement of the third track 4 is to meet the leveling requirements when the grain level is low, while preventing the grain from burying the third track 4 when the grain level is high, thus preventing the base frame 7 from sliding along the length of the grain bin 1. The vertical movement of the third track 4 relative to the bottom slider 3 is driven by a hydraulic cylinder or electric push rod. After adjustment, the relative position between the third track 4 and the bottom slider 3 is locked to prevent the third track 4 from accidentally sliding down. After the third track 4 is adjusted, bolts are used to connect the side slider 10 to the third track 4 as a whole, further enhancing the stability of the third track 4 in maintaining a constant height and making the overall structure more reliable.

[0034] A dovetail groove 3 is formed on the outer side of the bottom slider 3, and a matching dovetail-shaped locking block is provided on the back of the third track 4. The dovetail-shaped guiding and engaging structure enables the third track 4 to move relative to the bottom slider 3. In this embodiment, a toothed structure 32 is provided on the bottom slider 3 at the bottom of the dovetail groove 3, and a locking tongue 14 is provided on the third track 4 on the back of the dovetail-shaped locking block. The locking tongue 14 can be inserted into the toothed structure 32 to prevent the third track 4 from sliding uncontrollably relative to the bottom slider 3. In this application, the locking tongue 14 is an electromagnetic locking tongue. When energized, it retracts into the third track 4 so as not to affect the raising and lowering of the third track 4 relative to the bottom slider 3. When de-energized, it extends out of the third track 4 to lock between two adjacent teeth of the toothed structure 32. The mechanism of extending when de-energized allows the locking tongue of the present invention to maintain a locked state in the event of an accidental power failure, preventing the third track 4 from falling unexpectedly.

[0035] To ensure safety, the back of the third track 14 is provided with multiple locking tongues 14, all of which are located in the middle. Therefore, when the third track 14 rises to its upper limit position and falls to its lower limit position, the multiple locking tongues 14 can engage with the corresponding teeth to achieve a locking effect. In other embodiments, a bolt structure can be used instead of the locking structure composed of the locking tongues 14 and the toothed structure 32.

[0036] In this embodiment, no locking mechanism is provided between the surface slider 5 and the third track 4 to lock their positions. Instead, the height of the surface slider 5 is maintained by the holding capability of the third drive mechanism. This is because, under normal circumstances, when the height of the base frame 7 needs to be adjusted, it is achieved by adjusting the height of the third track 4. During this process, the lower end of the surface slider 5 is always supported by the limiting end 43. Only in the initial stage of leveling, when the grain surface height difference is particularly large, is it necessary to lift the surface slider 5 through the third drive mechanism to raise the base frame 7, so as to ensure that the base frame 7 can smoothly exceed the highest point of the grain surface to reach the other end of the grain silo to connect to the tracked trolley 6 located at the other end of the grain silo.

[0037] In this embodiment, the third driving mechanism is a hydraulic cylinder or an electric push rod, with its linear displacement output end fixed to the surface slider 5, and the housing portion fixed to the upper end of the third track 4. In this embodiment, to clearly illustrate the shape and structure of the third track 4, this part is not shown.

[0038] The tracked trolley 6 is connected to the scraper seat 9 via a ball joint 11. The ball housing of the ball joint 11 is fixed to the front end of the trolley body, and the ball joint rod is hinged to the scraper seat 9. Therefore, the tracked trolley 6 can both push and pull the scraper seat 9. Power can also be transmitted smoothly when the angle between the trolley body and the scraper seat 9 changes.

[0039] The tracked trolley 6 includes a chassis 61, a body 62, rollers 63, a drive motor 64, and tracks 65. The rollers 63 are rotatably mounted below the chassis 61, while the body 62 is floating above the chassis 61. The tracks 65 are wound between the front and rear sets of rollers 63 to increase the contact area between the tracked trolley 6 and the grain surface. The drive motor 64 drives the rollers 63 to rotate. The drive motor 64 transmits power to the rollers 63 through a gear structure (not shown in the figure). The spherical shell portion of the ball joint 11 is fixed to the front end of the body 62, and the ball joint rod is hinged to the scraper seat 9. It should be emphasized that when adjusting the height of the underframe 7, the ball joint 11 between the body 62 and the scraper seat 9 must first be disassembled. Therefore, the spherical shell portion can be detachably connected to the body 62, or the ball joint rod can be detachably connected to the scraper seat 9. This detachable connection can be achieved through bolted connections or other detachable connection methods found in the prior art.

[0040] A floating connection structure 13 is provided between the chassis 61 and the body 62. The floating connection structure 13 includes a guide rod 131 fixed above the chassis 61 and a guide post 132 fixed below the body 62. The guide rod 131 is inserted into the guide post 132 along the axis. The upper end of the guide rod 131 protrudes outward with a protruding section 133. The guide post 132 includes an anti-detachment section 134. When the body 62 is raised relative to the chassis 61, the anti-detachment section 134 can cooperate with the protruding section 133 to prevent the body 62 from detaching from the chassis 61. An elastic pad 135 is fitted on the inner circumferential surface of the anti-detachment section 134. The anti-detachment section 134 has grooves 136 on three sides for corresponding parts of the elastic pad 135 to be inserted to increase the bonding strength between the elastic pad 135 and the anti-detachment section 134.

[0041] In this embodiment, both the guide rod 131 and the guide post 132 are fixed to the corresponding base by bolts and flanges.

[0042] The inner diameter of the elastic pad 135 matches the size of the guide rod 131, but the elastic pad 135 itself has a certain deformation capacity. Therefore, the guide rod 131 can slide up and down within the guide post 132 and also rotate slightly. When the chassis 61 travels along an uneven grain surface, the floating of the vehicle body 62 relative to the chassis 61 is not straight up and down, but can swing slightly within a certain range, allowing the vehicle body 62 to float smoothly without getting stuck.

[0043] In this embodiment, only two sets of rollers 63 are provided. This is because the direction of the trolley is controlled by the base plate 4, and the trolley does not need to turn separately. On the other hand, this structure can increase the contact area between the rollers 63 and the grain surface.

[0044] Understandably, the tracks 65 in the tracked trolley 6 increase the contact area with the grain surface, which is beneficial for increasing friction. In other embodiments, the tracked trolley 6 can also be replaced by a conventional roller trolley without tracks.

[0045] In other embodiments, the scraper may also be mounted on the body of the tracked trolley 6.

[0046] Embodiment 2 of the track-type leveling device of the present invention: The difference between Example 2 and Example 1 is that, The third track 4 is fixed to the bottom slider 3. The lower end of the third track 4 is always kept flush with or higher than the lower end of the first track 2 to ensure that the lower end of the third track 4 is not buried by the grain during storage. To reduce the height of the base frame 7 and meet the leveling requirements when the grain surface is low, the surface slider 5 is processed into... Figure 8 In the indicated state, the base frame 7 is fixed to the vertical section 52 extending downward from the surface slider 5. The horizontal section 51 of the surface slider 5 is a dovetail-shaped claw that matches the dovetail groove 41.

[0047] Embodiment 3 of the track-type leveling device of the present invention: The difference between Example 3 and Example 1 is that... A tension spring is provided between the chassis 61 and the body 62. When the chassis 61 moves to the concave section of the grain surface, the body 62 floats relative to the chassis 61 and stretches the tension spring. When the chassis 61 moves to the convex section of the grain surface, the tension spring returns to its original position and drives the body 62 to return to its original position.

[0048] It should be emphasized that, in order to ensure the consistency of force on all parts of the vehicle body 62, multiple sets of tension springs are symmetrically arranged around the floating connection structure 7 as the center.

Claims

1. A track-type leveling device, comprising two first tracks installed on both sides of the inner wall of a grain silo, the height of the first tracks corresponding to the grain loading line of the grain silo, a base frame and a first drive unit for driving the base frame to move along the first tracks are provided between the two first tracks, characterized in that: The inner walls of the grain silo are also provided with a second track on both sides. The second track is parallel to the first track and located above the first track. A bottom slider is slidably arranged on the first track and the second track. A third track is installed on the bottom slider. A surface slider is installed in the third track. The base frame is installed between the surface sliders on both sides. A scraper seat that can slide along the base frame is also provided. The second track is slidably provided with side sliders, and two sets of the side sliders are slidably provided on each second track, with the two sets of side sliders located on both sides of the surface slider. The side sliders are used to clamp and fix the third track from both sides. It also includes a trolley, which includes a chassis and a body that can float up and down relative to the chassis. The chassis is equipped with rollers that can roll along the grain surface, and the chassis is also equipped with a drive motor for driving the rollers to rotate. The body and the scraper seat are connected by a ball joint to transmit power, and the body and the scraper seat are detachably connected.

2. The track-type leveling device according to claim 1, characterized in that: The third track can move up and down relative to the bottom slider, and a locking structure is provided between the bottom slider and the third track to fix their relative positions; the surface slider is installed in the third track in a guideable manner in the up and down direction.

3. The track-type leveling device according to claim 2, characterized in that: The third track is fixed on the bottom slider, and the surface slider is installed in the third track in a guideable manner in the vertical direction. The lower end of the third track is not lower than the lower end of the first track. The surface slider is L-shaped and is installed in the third track through a horizontal section and fixed to the base frame through a vertical section.

4. A track-type leveling device according to claim 2, characterized in that: The bottom slider has a dovetail groove three. The part of the third track that is inserted into the bottom slider is a dovetail-shaped block. The dovetail-shaped block matches the shape of the dovetail groove three and is inserted into it in a guided movement. The locking structure includes a toothed structure and a locking tongue that can be inserted between two adjacent teeth of the toothed structure. The toothed structure is opened at the bottom of the dovetail groove three and is located in the middle of the third track.

5. A track-type leveling device according to claim 4, characterized in that: The back of the third track is provided with multiple locking tongues, which are spaced apart along the vertical direction; the locking tongues are electromagnetic locking tongues that retract when energized and extend when de-energized.

6. A track-type leveling device according to claim 1, characterized in that: A floating connection structure is provided between the chassis and the vehicle body. The floating connection structure includes a guide rod and a guide column. The guide rod is fixed on one of the chassis and the vehicle body, and the guide column is fixed on the other. The guide rod is inserted into the guide column. The end of the guide rod is provided with a protrusion. The corresponding end of the guide column is provided with an anti-detachment section to prevent the protrusion from detaching from the guide column. An elastic pad is provided on the inner circumference of the anti-detachment section. The inner diameter of the elastic pad matches the size of the guide rod.

7. A track-type leveling device according to claim 6, characterized in that: The floating connection structure is located in the middle of the chassis; the anti-detachment section has grooves on three sides for the corresponding parts of the elastic pad to be embedded; a tension spring is provided between the chassis and the vehicle body.

8. A track-type leveling device according to claim 1, characterized in that: The trolley is a tracked trolley with two sets of rollers at the bottom of the chassis. The drive motor is used to drive one set of rollers to rotate, and a track is set between the two sets of rollers to transmit power.

9. A track-type leveling device according to claim 1, characterized in that: The base frame has grooves on both sides, and transverse track wheels are installed on both sides of the scraper seat. The transverse track wheels are embedded in the grooves. The scraper seat is also equipped with a transverse drive motor for driving the transverse track wheels to rotate on the base frame. A dovetail groove is opened in the middle of the third track. The cross-sectional shape of the surface slider is adapted to the dovetail groove so that the surface slider can be guided to move in the vertical direction in the third track. The ball joint is hinged to the side of the scraper seat.

10. A track-type leveling device according to any one of claims 1 to 7, characterized in that: The side slider includes a clamping part. The two sides of the third track have protruding ridges. The clamping part has a groove that matches the shape of the protruding ridges. The clamping part is connected to the third track by bolts. Bolt holes are correspondingly provided on the bottom of the groove and on the two side walls of the third track. A recessed groove is provided around the bolt holes on the inner side of the third track to allow the bolt head to be fully embedded. The bottom slider is mounted on the first and second tracks in a wrapping manner. A second groove is formed on the lower side of the first track and the upper side of the second track. The bottom slider includes a claw that is adapted to the shape of the second groove for engaging. A roller is mounted on the claw. When the bottom slider moves along the first and second tracks, the roller rolls within the second groove. A ball is embedded on the side of the side slider that contacts the second track. The ball protrudes from the corresponding side of the side slider to roll along the second track.

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