Vehicle-mounted soil laying device suitable for soft ground

Abstract

The application provides a vehicle-mounted soil laying device suitable for soft ground, which comprises a vehicle hopper, a rotating roller, a tamping assembly and a soil rolling assembly; the vehicle hopper is used for containing backfill soil, and a discharge port is formed in the inner bottom surface thereof; the rotating roller is rotatably arranged in the vehicle hopper and is drivingly connected with a first rotating driving member, and a plurality of soil storage grooves are formed in the outer peripheral wall of the rotating roller; the tamping assembly is arranged on the bottom surface of the vehicle hopper and is located at the rear side of the discharge port, and is used for tamping the backfill soil on the ground; the soil rolling assembly is arranged at the rear side of the tamping assembly and is connected with the vehicle hopper through an adjusting structure, and is used for supporting the backfill soil in the tamping and rolling state on the ground; and the adjusting structure can adjust the distance between the soil rolling assembly and the vehicle hopper, so as to increase or reduce the acting force of the soil rolling assembly on the backfill soil. The vehicle-mounted soil laying device suitable for soft ground provided by the application can ensure the uniform thickness of the soil laying surface in the backfill soil laying construction, and ensure the stable quality of the backfill soil laying construction.

Description

Technical Field

[0001] The present application belongs to the field of building construction technology, and specifically relates to a vehicle-mounted soil-laying device suitable for soft strata. Background Art

[0002] In the field of engineering construction, especially when dealing with soft ground, the use of fluidized backfill for paving is a crucial task. Due to the physical characteristics of soft ground, such as low strength, high compressibility, and unstable structure, high requirements are placed on construction technology and equipment. Specifically, when paving soft ground, the prepared, fluid backfill material needs to be evenly spread across the area. This requires appropriate treatment of the soft ground in the early stages, and then the fluidized backfill material is evenly spread to the required thickness, ensuring that the soil is evenly distributed across the construction area to ensure that the backfill forms a uniform and stable structure after solidification.

[0003] In the prior art, backfill soil is transported to the paving area by a soil transport truck. Specifically, the backfill soil is loaded into the soil transport truck. When the soil transport truck passes the paving area, a reserved opening on the bottom of the truck bed opens, allowing the backfill soil in the truck bed to be evenly discharged under the action of gravity.

[0004] The inventors discovered that during the backfill laying process, the soil in the vehicle bed will continue to decrease, the squeezing effect between the soil bodies will decrease, and the soil discharge efficiency will be reduced, resulting in a technical defect of a weak subsequent paving surface, affecting the quality of the paving construction; at the same time, since the backfill discharge efficiency is not controlled, when the vehicle's driving speed changes (such as temporary parking, acceleration and deceleration, etc.), the thickness of the paving surface will also change accordingly, resulting in a technical problem of reduced quality of the backfill paving construction. Summary of the Invention

[0005] The embodiment of the present application provides a vehicle-mounted soil paving device suitable for soft strata, which aims to ensure that the thickness of the soil paving surface during backfill soil paving construction is consistent and that the quality of the backfill soil paving construction remains stable.

[0006] To achieve the above objectives, the technical solution adopted in this application is:

[0007] A vehicle-mounted soil spreading device suitable for soft ground is provided, comprising a bucket connected to the rear end of a vehicle body for accommodating backfill soil, wherein a discharge port is provided on the inner bottom surface of the bucket, and the vehicle-mounted soil spreading device further comprises:

[0008] A rotating roller is arranged in the vehicle hopper and rotates along the left-right direction, and its axial direction is parallel to the left-right direction to close the discharge port; the rotating roller is drivingly connected with a first rotating driving member for driving the rotating roller to rotate about the central axis, and a plurality of soil storage grooves are formed on the outer circumferential wall of the rotating roller and are arranged along the circumferential direction of the rotating roller to allow the backfill soil to enter; when the rotating roller rotates, part of the soil storage grooves are directed to the discharge port to allow the backfill soil in the soil storage grooves to fall out of the discharge port to the ground.

[0009] A tamping assembly is arranged on the bottom surface of the vehicle hopper and is located at the rear side of the discharge port to tamp the backfill soil on the ground; and

[0010] A soil rolling assembly is arranged at the rear side of the tamping assembly and is connected with the vehicle hopper through an adjusting structure to support the backfill soil in the tamped state on the ground and to roll the backfill soil; and the adjusting structure can adjust the distance between the soil rolling assembly and the vehicle hopper to increase or decrease the force applied by the soil rolling assembly to the backfill soil.

[0011] In a possible implementation, an accommodating groove is formed on the outer circumferential wall of the rotating roller and extends along the axial direction of the rotating roller, and a bulldozing block is slidingly connected in the accommodating groove;

[0012] The bulldozing block and the groove bottom of the accommodating groove are provided with an elastic return member, the elastic return member can drive the bulldozing block to move, so that part of the bulldozing block extends out of the accommodating groove and pushes the backfill soil in the discharge port or the vehicle hopper in a direction away from the central axis of the rotating roller;

[0013] In addition, the extending end of the bulldozing block adopts an arc structure, so that when the extending part of the bulldozing block abuts against the inner wall of the vehicle hopper, the bulldozing block is retracted into the accommodating groove and the elastic return member is elastically compressed.

[0014] In a possible implementation, the rotating roller is located at the front end of the vehicle hopper, and the front side of the vehicle hopper has a concave arc surface adapted to the outer wall of the rotating roller; a reserved hole is formed in the concave arc surface and penetrates along the front-rear direction and is adapted to communicate with the accommodating groove, and the vehicle hopper further comprises:

[0015] A stop block is slidingly inserted into the reserved hole along the front-rear direction, and the rear end surface of the stop block adopts an arc surface structure adapted to the concave arc surface; a groove is formed in the upper side of the stop block, and the front side of the groove adopts an inclined surface inclined from bottom to top and towards the front side;

[0016] an elastic driving member, fixedly disposed on a side of the stop block facing away from the rotating roller and connected to the stop block so as to drive the stop block to move toward the rotating roller; when the rotating roller rotates until the accommodating groove is connected to the reserved hole, the elastic driving member can drive the stop block to move into the accommodating groove and elastically compress the elastic return member to limit the rotation of the rotating roller relative to the bucket; and

[0017] A transmission plate is slidably arranged on the upper side of the stop block in the up-down direction, and is transmission-connected to a first linear cylinder for driving it to move in the up-down direction;

[0018] Wherein, when the stop block is inserted into the accommodating groove, the front side surface of the groove is at the front side of the truck bed, so that the transmission plate abuts against the front side surface of the groove when moving downward, and drives the stop block to move toward the front side until it is out of the accommodating groove and the elastic driving member is elastically compressed; when the transmission plate abuts against the bottom of the groove, the rear end face of the stop block is concentrically arranged with the concave arc surface.

[0019] In a possible implementation, the elastic driving member includes:

[0020] a bracket, disposed in front of the reserved hole and fixedly connected to the front side of the bucket; and

[0021] a second spring fixedly connected to the side of the bracket facing the bucket and connected to the stop block, so that when the rear end surface of the stop block is concentrically arranged with the concave arc surface, the second spring is in an elastically compressed state or a balanced state;

[0022] In which, a slot is provided on the front end face of the stop block, and the bracket has a fixed shaft extending toward the stop block and inserted into the slot; the second spring is sleeved on the fixed shaft, and when the rear end face of the stop block is concentrically arranged with the concave arc surface, the extended end of the fixed shaft abuts against the bottom of the slot.

[0023] In one possible implementation, the rammed earth assembly includes:

[0024] A plurality of second linear cylinders are arranged in parallel on the bottom surface of the bucket along the left-right direction, and the power output end of each second linear cylinder is arranged downward; and

[0025] A plurality of rammed earth plates are arranged on the lower sides of the plurality of second linear cylinders in a one-to-one correspondence, and each of the rammed earth plates is connected to the power output end of the corresponding second linear cylinder via an elastic telescopic member;

[0026] Among them, there is a linkage structure between the two rammed earth plates adjacent to each other in the left and right directions; when the linkage structure connects the two rammed earth plates and one of the rammed earth plates moves in the up and down directions, the other rammed earth plate moves synchronously to make the elastic telescopic member stretch or shrink accordingly.

[0027] In a possible implementation, the linkage structure includes:

[0028] A fixing seat fixedly connected to one of the rammed earth plates, and having two vertical plates arranged side by side in the front-to-back direction on its upper side; each of the vertical plates is provided with a positioning hole extending through the front-to-back direction, and the two positioning holes are coaxially connected; and

[0029] a swing arm hinged to the other rammed earth plate, and having an alignment hole extending therethrough in the front-to-back direction at its swing end; when the upper side surfaces of the two rammed earth plates are coplanar, the swing arm is adapted to swing between the two upright plates so that the alignment hole communicates with the positioning hole; and

[0030] a sliding arm slidably connected to the fixing base in a front-to-rear direction, adapted to be inserted into the positioning hole and the alignment hole that are interconnected, and to limit the swinging of the swing arm relative to the fixing base;

[0031] Wherein, the sliding arm is suitable for passing through the two positioning holes and extending out, and a thread groove is provided on its extending end surface; a docking bolt is threadedly connected in the thread groove, and the head of the docking bolt is suitable for abutting the vertical plate to limit the sliding arm from withdrawing from the positioning hole and to limit the separation of the sliding arm and the swing arm.

[0032] In a possible implementation, the elastic expansion member includes:

[0033] a sleeve coaxially connected to the power output end of the second linear cylinder, adopting an internal hollow structure, and a through hole communicating with the interior of the sleeve at the lower end;

[0034] an insert rod fixedly connected to the upper side of the rammed earth plate and slidably inserted into the through hole; the outer peripheral wall of the insert rod is connected to the inner peripheral wall of the through hole, and the upper end of the insert rod has a blocking portion extending radially outward and suitable for abutting the inner bottom surface of the sleeve; and

[0035] The third spring is arranged in the sleeve and is sleeved on the outer periphery of the insertion rod so that its upper and lower ends respectively abut against the blocking portion and the inner bottom surface of the sleeve.

[0036] In one possible implementation, the soil-grinding assembly includes:

[0037] a mounting frame, disposed below the truck bucket and connected to the truck bucket via the adjustment structure; and

[0038] A rolling wheel is arranged on the lower side of the mounting frame, with its axial direction parallel to the left-right direction, and the rolling wheel is connected to the mounting frame for rotation in the left-right direction so as to roll along the paving surface;

[0039] Wherein, the regulating structure comprises:

[0040] a connecting arm, disposed between the bucket and the mounting frame, with upper and lower ends thereof respectively connected to the bucket and the mounting frame for rotation in left and right directions; and

[0041] A swing seat is arranged in parallel with the connecting arm in the front-to-back direction, and is hinged to the truck bucket in the left-right direction; a third linear cylinder is fixedly connected to the swing end face of the swing seat, the power output axis of the third linear cylinder is perpendicular to the hinge axis of the swing seat, and the power output end of the third linear cylinder is hinged to the mounting frame in the left-right direction.

[0042] In a possible implementation, the truck bucket adopts an upwardly open structure, and the truck bucket further includes:

[0043] A strip-shaped shell is detachably connected to the rear end of the bucket, and has a soil discharge port on the side facing the bucket that is connected to the interior of the bucket; when the strip-shaped shell is connected to the bucket, the outer side of the bucket closes the soil discharge port; the strip-shaped shell is also provided with a strip-shaped hole that is connected to the interior of the bucket and extends in the left-right direction, and the two ends of the strip-shaped hole are respectively located on the left and right sides of the inner cavity of the bucket;

[0044] A winding roller is provided in the strip-shaped shell, and its axial direction is parallel to the left-right direction; the winding roller is connected to the strip-shaped shell in a rotational manner along the left-right direction, and is transmission-connected to a second rotation driving member; and

[0045] A translation bar is provided on the upper side of the bucket, with its length direction parallel to the left-right direction, and the left and right ends of the translation bar are respectively located on the left and right sides of the inner cavity of the bucket, and are both slidably connected to the bucket along the front-rear direction;

[0046] Wherein, a dustproof belt is wound on the winding roller; the dustproof belt passes through the strip hole and extends out, and the extended end of the dustproof belt is connected to the translation bar, so that when the translation bar moves toward the front, the dustproof belt is spread out and closes the opening of the truck bed.

[0047] In a possible implementation, a follower nut is fixedly connected to the translation bar, the axial direction of the follower nut is parallel to the up-down direction, and a positioning bolt is threadedly connected to the follower nut; the upper side surface of the truck bed is provided with a plurality of docking grooves arranged at intervals along the front-to-back direction and suitable for inserting the positioning bolts;

[0048] When the translation bar moves backward to abut against the strip shell, the positioning bolt is suitable for being inserted into one of the docking grooves; when the translation bar moves forward to close the opening of the truck bed by the dustproof belt, the positioning bolt is suitable for being inserted into the other docking groove.

[0049] In this embodiment, a rotating roller closes the discharge opening, ensuring that soil material does not discharge through the discharge opening as the bucket moves with the vehicle body. When the bucket moves to a point where the discharge opening is above the soil paving area, the first rotating drive member drives the rotating roller to rotate, causing backfill soil that has entered the soil storage trough to fall out through the discharge opening and onto the soil paving area. Subsequently, the paving surface is compacted and rolled by the tamping assembly and the rolling assembly, ensuring a smooth surface.

[0050] During the process of the soil rolling assembly rolling the soil surface, the weight of the soil in the truck bed is constantly decreasing and the center of gravity of the entire vehicle is shifted forward. Therefore, the distance between the soil rolling assembly and the truck bed can be controlled by adjusting the structure, so as to adjust the force applied by the soil rolling assembly to the backfill soil in real time to ensure the rolling effect.

[0051] Compared with the prior art, the vehicle-mounted soil paving device provided in this embodiment, which is suitable for soft strata, can ensure that the thickness of the soil paving surface during backfill soil paving construction is consistent, thereby ensuring that the quality of backfill soil paving construction remains stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0053] Figure 1 A schematic diagram of the three-dimensional structure of a vehicle-mounted soil-paving device provided in an embodiment of the present application;

[0054] Figure 2 for Figure 1 A partial enlarged schematic diagram of the upper circle A;

[0055] Figure 3 for Figure 1 A top view of

[0056] Figure 4for the section structure along the line B-B in the middle Figure 3 for the section structure along the line B-B in the middle

[0057] Figure 5 for the section structure along the line B-B in the middle Figure 4 for the section structure along the line B-B in the middle

[0058] Figure 6 for the section structure along the line B-B in the middle

[0059] Figure 7 for the section structure along the line B-B in the middle

[0060] Figure 8 for the section structure along the line B-B in the middle

[0061] Figure 9 for the section structure along the line B-B in the middle

[0062] Figure 10 for the section structure along the line B-B in the middle

[0063] Figure 11 for the section structure along the line B-B in the middle

[0064] Figure 12 for the section structure along the line B-B in the middle

[0065] Figure 13 for the section structure along the line B-B in the middle

[0066] Figure 14 for the section structure along the line B-B in the middle

[0067] Figure 15 for the section structure along the line B-B in the middle

[0068] Figure 16 for the section structure along the line B-B in the middle

[0069] Figure 17 for the section structure along the line B-B in the middle

[0070] Explanation of reference numerals: 1. bucket; 11. discharge port; 12. baffle; 13. support pad; 14. reserved hole; 15. stop block; 151. groove; 152. slot; 16. transmission plate; 161. first linear cylinder; 17. strip shell; 171. discharge port; 172. strip hole; 18. winding roller; 19. docking groove; 2. rotating roller; 21. soil storage trough; 22. receiving trough; 221. guide rod; 23. bulldozer; 231. guide groove; 24. elastic return member; 3. tamping assembly; 31. second linear cylinder; 32. tamping plate; 4. rolling assembly; 41. mounting frame; 42. rolling wheel; 5. adjusting structure; 51. connecting arm; 52. swing seat; 521. third linear cylinder; 6. elastic driving member; 61. Bracket; 611. Fixed shaft; 62. Second spring; 7. Elastic telescopic member; 71. Sleeve; 711. Through hole; 72. Insert rod; 721. Blocking part; 73. Third spring; 8. Linkage structure; 81. Fixed seat; 811. Vertical plate; 812. Positioning hole; 82. Swing arm; 821. Alignment hole; 83. Sliding arm; 831. Threaded groove; 832. Docking bolt; 9. Translation bar; 91. Follower nut; 92. Positioning bolt; 10. First rotating drive member; 101. First rotating motor; 1011. First driving gear; 102. First driven gear; 20. Second rotating drive member; 201. Second rotating motor; 2011. Second driving gear; 202. Second driven gear; 30. Dustproof belt. DETAILED DESCRIPTION

[0071] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0072] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0073] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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 cannot be understood as a limitation on this application.

[0074] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0075] Please also refer to Figures 1 to 17 The vehicle-mounted soil spreading device for soft ground provided by the present application is now described. The vehicle-mounted soil spreading device for soft ground proposed in the present application comprises a vehicle bucket 1, a rotating roller 2, a soil tamping assembly 3 and a soil rolling assembly 4.

[0076] The bucket 1 is connected to the rear end of the vehicle body so as to move synchronously with the movement of the vehicle body; and the bucket 1 has an internal structure for accommodating backfill soil, and a discharge port 11 opened on its inner bottom surface and communicating with the interior thereof.

[0077] In this embodiment, the bottom surface of the truck bed 1 is also connected to a baffle 12 fixed in front of the discharge opening 11. This ensures that the backfill, after being discharged, maintains a downward trajectory, or a rearwardly inclined trajectory, to prevent the backfill from contacting the vehicle's front wheels and deviating from the paving area due to the rotation of the front wheels. Furthermore, the inner bottom surface of the truck bed 1 is inclined, or supported by a support pad 13 with an inclined upper side, to ensure that the backfill contained within the truck bed 1 can move along the inclined surface to the discharge opening 11, ensuring efficient and stable discharge of the backfill.

[0078] The rotating roller 2 is arranged in the truck bucket 1, and its axial direction is parallel to the left-right direction; the rotating roller 2 is connected to the truck bucket 1 for rotation along the left-right direction, and is connected to a first rotating drive component 10 for driving it to rotate around the central axis; and the rotating roller 2 is embedded in the discharge port 11 to close the discharge port 11.

[0079] In this embodiment, the first rotating drive component 10 includes a first rotating motor 101 fixed on the outer wall of the truck bed 1, and a first driven gear 102 located on the outside of the truck bed 1 and coaxially connected to the rotating roller 2; wherein, the power output end of the first rotating motor 101 is connected to a first driving gear 1011 that is meshed with the first driven gear 102.

[0080] A plurality of soil storage troughs 21 are provided on the outer peripheral wall of the rotating roller 2, which are arranged at intervals along the circumference thereof and are used for receiving backfill soil. Each soil storage trough 21 extends along the axial direction of the rotating roller 2, so that when the soil storage trough 21 faces the backfill soil in the truck bed 1, the backfill soil will move along the inclined surface and fall into the soil storage trough 21 to fill the soil storage trough 21. Moreover, when the rotating roller 2 rotates, some of the soil storage troughs 21 face the discharge port 11, so that the backfill soil therein falls out to the ground through the discharge port 11.

[0081] The ramming assembly 3 is arranged on the bottom surface of the truck bed 1 and is located at the rear side of the discharge port 11 to compact the backfill soil on the ground; by timely compacting the backfill soil, damage to the paved surface caused by the rotation of the wheels (and the rolling wheels 42 proposed in this application) can be avoided.

[0082] The soil-rolling assembly 4 is arranged on the rear side of the tamping assembly 3 and is connected to the truck bed 1 through an adjustment structure 5, so as to support the backfill soil in the ground and compact it while the vehicle body moves forward; and the adjustment structure 5 can adjust the distance between the soil-rolling assembly 4 and the truck bed 1 to ensure that the center of gravity position does not change, so as to ensure the stability of the soil-rolling effect.

[0083] In this embodiment, rotating rollers 2 close the discharge opening 11, ensuring that soil material does not discharge through the discharge opening 11 when the truck bed 1 moves with the vehicle body. When the truck bed 1 moves to a point where the discharge opening 11 is above the soil paving area, the first rotating drive member 10 drives the rotating rollers 2 to rotate, causing backfill soil that has entered the soil storage trough 21 to fall out through the discharge opening 11 and onto the soil paving area. Subsequently, the soil tamping assembly 3 and the soil rolling assembly 4 are used to compact and roll the soil paving surface, ensuring a smooth surface.

[0084] During the process of the rolling assembly 4 rolling the soil surface, since the weight of the soil in the truck bed 1 is constantly decreasing and the center of gravity of the entire vehicle is shifted forward, the distance between the rolling assembly 4 and the truck bed 1 can be controlled by adjusting the structure 5, so as to adjust the force applied by the rolling assembly 4 to the backfill soil in real time to ensure the rolling effect.

[0085] Compared with the prior art, the vehicle-mounted soil paving device provided in this embodiment, which is suitable for soft strata, can ensure that the thickness of the soil paving surface during backfill soil paving construction is consistent, thereby ensuring that the quality of backfill soil paving construction remains stable.

[0086] In some embodiments, as Figure 5 、 Figure 13 and Figure 14 As shown, a receiving groove 22 extending along its axial direction is provided on the outer peripheral wall of the rotating roller 2, and a bulldozer block 23 is slidably connected in the receiving groove 22; wherein, according to the relative position of the bulldozer block 23 and the rotating roller 2, the bulldozer block 23 has a storage state in the receiving groove 22, and a protruding state partially extending out of the receiving groove 22.

[0087] There is an elastic reset member 24 between the bulldozer block 23 and the bottom of the accommodating groove 22. This elastic reset member 24 can drive the bulldozer block 23 to move so that part of the bulldozer block 23 extends out of the accommodating groove 22, that is, maintains a protruding state; in the process of the bulldozer block 23 switching to the protruding state, the bulldozer block 23 can push the backfill soil in the discharge port 11 or the truck bucket 1 in the direction away from the central axis of the rotating roller 2 to ensure that the backfill soil located on the periphery of the rotating roller 2 remains loose.

[0088] In addition, the protruding end of the bulldozer block 23 adopts an arc-shaped structure, so that when the protruding part of the bulldozer block 23 abuts the inner wall of the bucket 1, the bulldozer block 23 can be retracted into the accommodating groove 22 in time, that is, maintained in the stored state (in this state, the elastic return member 24 is elastically compressed), avoiding interference with the rotation of the rotating roller 2.

[0089] It should be noted that, in this embodiment, the bottom of the accommodating groove 22 has a guide rod 221 extending toward the opening, and the bulldozer block 23 has a guide groove 231 suitable for inserting the guide rod 221; based on this, the elastic return member 24 is a first spring sleeved on the outer periphery of the guide rod 221, and the two ends of this first spring are respectively in contact with the bottom of the accommodating groove 22 and the bulldozer block 23.

[0090] In some embodiments, as Figures 5 to 8 As shown, the rotating roller 2 is located at the front end of the truck bucket 1, and the front side surface of the truck bucket 1 has a concave arc surface suitable for connecting with the outer wall of the rotating roller 2; this concave arc surface is provided with a reserved hole 14 that passes through in the front-to-back direction and is suitable for communicating with the accommodating groove 22, and the truck bucket 1 also includes a stop block 15, an elastic driving member 6 and a transmission plate 16.

[0091] The stop block 15 is slidably inserted into the reserved hole 14 in the front-to-back direction, and its rear end face adopts an arc surface structure adapted to the concave arc surface, so that when the stop block 15 moves to the point where its rear end face coincides with the edge of the rear end of the reserved hole 14, the rear end face of the stop block 15 and the concave arc surface are concentrically arranged.

[0092] A groove 151 is formed on the upper side of the stop block 15 , and the front side of the groove 151 is an inclined surface that tilts from bottom to top toward the front side.

[0093] The elastic driving member 6 is fixedly arranged on the side of the stop block 15 facing away from the rotating roller 2, and is connected to the stop block 15 to drive the stop block 15 to move toward the rotating roller 2; based on this, when the rotating roller 2 rotates until the accommodating groove 22 is connected to the reserved hole 14, the elastic driving member 6 can drive the stop block 15 to move into the accommodating groove 22 and cause the elastic reset member 24 to undergo further elastic compression to fix the position of the rotating roller 2 and limit the rotation of the rotating roller 2 relative to the truck bucket 1.

[0094] The transmission plate 16 is slidably disposed on the upper side of the stop block 15 in the up-down direction, and is transmission-connected to a first linear cylinder 161 for driving the transmission plate 16 to move in the up-down direction.

[0095] When the stop block 15 is inserted into the receiving groove 22, the front side surface of the groove 151 is located at the front side of the truck bed 1, so that the transmission plate 16 can abut the front side surface of the groove 151 when it moves downward, and overcome the elastic force of the elastic driving member 6 (causing the elastic driving member 6 to be elastically compressed), and drive the stop block 15 to move toward the front side to disengage from the receiving groove 22.

[0096] When the transmission plate 16 abuts the bottom of the groove 151, the transmission plate 16 can limit the backward movement of the stop block 15 under the action of the elastic driving member 6, so as to ensure that the rear end face of the stop block 15 remains in a position concentric with the concave arc surface; at the same time, the transmission plate 16 can also limit the forward movement of the stop block 15, thereby ensuring that the stop block 15 does not move when the bulldozer 23 passes through the rear end face of the stop block 15 and generates a forward thrust.

[0097] In some embodiments, as Figure 6 As shown, the elastic driving member 6 includes a bracket 61 and a second spring 62 .

[0098] The bracket 61 is arranged on the front side of the reserved hole 14 and is fixedly connected to the front side of the bucket 1.

[0099] The second spring 62 is fixedly connected to the side of the bracket 61 facing the bucket 1 and is connected to the stop block 15 so that when the rear end surface of the stop block 15 is concentrically arranged with the concave arc surface, the second spring 62 is in an elastically compressed state or a balanced state.

[0100] A slot 152 is provided on the front end face of the stop block 15, and a fixed shaft 611 is provided on the bracket 61, which extends toward the stop block 15 and is inserted into the slot 152. Based on this, the aforementioned second spring 62 is sleeved on the fixed shaft 611, and when the rear end face of the stop block 15 is concentrically arranged with the concave arc surface, the extended end of the fixed shaft 611 abuts against the bottom of the slot 152, thereby achieving the technical purpose of limiting the relative movement of the stop block 15 and the bracket 61.

[0101] In some embodiments, as Figure 4 As shown, the ramming assembly 3 includes a plurality of second linear cylinders 31 and a plurality of ramming plates 32 .

[0102] A plurality of second linear cylinders 31 are arranged in parallel along the left-right direction on the bottom surface of the bucket 1 , and a power output end of each second linear cylinder 31 is arranged downward.

[0103] The plurality of rammed earth plates 32 are disposed on the lower sides of the plurality of second linear cylinders 31 in a one-to-one correspondence, and each rammed earth plate 32 is connected to the power output end of the corresponding second linear cylinder 31 via an elastic telescopic member 7 .

[0104] Among them, there is a linkage structure 8 between the two rammed earth plates 32 adjacent in the left and right directions; when the linkage structure 8 connects the two rammed earth plates 32 and one of the rammed earth plates 32 moves in the up and down directions, the other rammed earth plate 32 moves synchronously, so that the elastic telescopic member 7 stretches or contracts accordingly.

[0105] By adopting the above technical solution, when the second linear cylinder 31 is started, the corresponding rammed earth plate 32 moves in the up and down directions to contact the paved surface and achieve the technical effect of compacting the paved surface; during this process, the elastic telescopic member 7 is in a state of no deformation; based on this, when the rammed earth plate 32 in the moving state is connected to another rammed earth plate 32 through the linkage structure 8, the two rammed earth plates 32 will move synchronously, and since the second linear cylinder 31 corresponding to the rammed earth plate 32 in the follow-up state is not started, the elastic telescopic member 7 will undergo adaptive elastic deformation to avoid the force generated by the lifting and lowering directly acting on the second linear cylinder 31, thereby ensuring the stability of the second linear cylinder 31 in the self-locking state.

[0106] It should be noted that a single rammed earth plate 32 drives at least one other rammed earth plate 32 to move, which not only saves energy but also has the effect of balancing the edge ramming force, that is, the downward pressure is reduced by the force of the elastic telescopic member 7 to restore the deformation, so that it meets the requirement that the closer to the center of the rammed surface, the greater the pressure required.

[0107] In some embodiments, as Figure 9 As shown, the linkage structure 8 includes a fixed seat 81 , a swing arm 82 and a sliding arm 83 .

[0108] The fixing seat 81 is fixedly connected to one of the rammed earth plates 32, and its upper side has two vertical plates 811 arranged in parallel along the front-to-back direction; each vertical plate 811 is provided with a positioning hole 812 that passes through along the front-to-back direction, and the two positioning holes 812 are coaxially connected.

[0109] The swing arm 82 is hinged on the other rammed earth plate 32, and its swing end has an alignment hole 821 that passes through in the front-to-back direction; when the upper side surfaces of the two rammed earth plates 32 are coplanar, the swing arm 82 is suitable for swinging to a horizontal state, and the swing arm 82 in the horizontal state is located between the two vertical plates 811, so that the alignment hole 821 is connected to the two positioning holes 812 at the same time.

[0110] The sliding arm 83 is slidably connected to the fixing seat 81 along the front-back direction so as to be suitable for being inserted into the positioning hole 812 and the alignment hole 821 that are connected to each other, and to limit the swinging of the swing arm 82 relative to the fixing seat 81 .

[0111] Among them, the sliding arm 83 is suitable for passing through the two positioning holes 812 and extending out, and a threaded groove 831 is provided on its extending end surface; a docking bolt 832 is threadedly connected to the inner thread of this threaded groove 831, and the head of the docking bolt 832 can abut against the vertical plate 811 to limit the sliding arm 83 from withdrawing from the positioning hole 812 and limit the separation of the sliding arm 83 and the swing arm 82.

[0112] In some embodiments, as Figure 4 and Figure 10 As shown, the elastic telescopic member 7 includes a sleeve 71 , an inserting rod 72 and a third spring 73 .

[0113] The sleeve 71 is coaxially connected to the power output end of the second linear cylinder 31 and has an internal hollow structure. The lower end of the sleeve 71 has a through hole 711 connected to the interior thereof. The aperture of the through hole 711 is smaller than the inner diameter of the sleeve 71 .

[0114] The insertion rod 72 is fixedly connected to the upper side of the rammed earth plate 32 and is slidably inserted into the through hole 711; the outer peripheral wall of the insertion rod 72 is connected to the inner peripheral wall of the through hole 711 to maintain the connection relationship and the stability of the sliding process, and the upper end of the insertion rod 72 has a blocking portion 721 extending radially outward, which is suitable for abutting the inner bottom surface of the sleeve 71 and limiting the separation of the sleeve 71 and the insertion rod 72.

[0115] The third spring 73 is disposed in the sleeve 71 and is sleeved on the outer periphery of the insertion rod 72 so that its upper and lower ends respectively abut against the blocking portion 721 and the inner bottom surface of the sleeve 71 .

[0116] Among them, in the process of the ramming plate 32 moving up and down along the power output end of the second linear cylinder 31, the upper side surface of the ramming plate 32 abuts the lower end surface of the sleeve 71, and the third spring 73 maintains a balanced state or an elastic contraction state; in the process of the ramming plate 32 moving up and down along with another ramming plate 32, the third spring 73 undergoes further elastic contraction, and the power output shaft of the second linear cylinder 31 remains stationary.

[0117] In some embodiments, as Figure 4 and Figure 15 As shown, the soil-milling assembly 4 includes a mounting frame 41 and a milling wheel 42 .

[0118] The mounting frame 41 is disposed below the truck bed 1 and is connected to the truck bed 1 via the aforementioned adjustment structure 5 .

[0119] The rolling wheel 42 is arranged at the lower side of the mounting frame 41, and its axial direction is parallel to the left-right direction. The rolling wheel 42 is connected to the mounting frame 41 for rotation along the left-right direction so as to be supported on the ground and roll along the paving surface.

[0120] Based on this, the adjustment structure 5 includes a connecting arm 51 and a swing seat 52 .

[0121] The connecting arm 51 is disposed between the bucket 1 and the mounting frame 41 , and its upper and lower ends are respectively connected to the bucket 1 and the mounting frame 41 in a rotatable manner along the left and right directions.

[0122] The swing seat 52 and the connecting arm 51 are arranged side by side in the front-to-back direction, and are hinged to the truck bed 1 in the left-right direction; and a third linear cylinder 521 is fixedly connected to the swing end face of the swing seat 52, and the power output axis of the third linear cylinder 521 is perpendicular to the hinge axis of the swing seat 52, and the power output end of the third linear cylinder 521 is hinged to the mounting frame 41 in the left-right direction, so that when the power output shaft of the third linear cylinder 521 is extended or retracted, the connecting arm 51 swings adaptively, and the horizontal plane of the rotating axis of the rolling wheel 42 rises or falls.

[0123] In some embodiments, as Figure 16 and Figure 17 As shown, the bucket 1 adopts an upwardly open structure to facilitate the feeding of backfill soil; in order to reduce dust caused by the rotation of the rotating roller 2, the bucket 1 also includes a strip shell 17, a winding roller 18 and a translation bar 9.

[0124] The strip shell 17 is detachably connected to the rear end of the truck bucket 1 , and has a soil discharge port 171 on the side facing the truck bucket 1 that is connected to the interior of the truck bucket 1 .

[0125] Based on this, when the strip shell 17 is connected to the truck bucket 1, the outer side of the truck bucket 1 closes the soil discharge port 171 to prevent the soil in the strip shell 17 from being discharged; after the strip shell 17 is separated from the truck bucket 1, the soil inside the strip shell 17 can be discharged from the soil discharge port 171 by shaking the strip shell 17.

[0126] The strip shell 17 is further provided with a strip hole 172 which is in communication with the interior thereof and extends in the left-right direction, and the two ends of the strip hole 172 are respectively located on the left and right sides of the inner cavity of the truck box 1 .

[0127] The winding roller 18 is disposed in the strip-shaped shell 17 , and its axial direction is parallel to the left-right direction; the winding roller 18 is rotatably connected to the strip-shaped shell 17 along the left-right direction, and is transmission-connected to a second rotation driving member 20 .

[0128] In this embodiment, the second rotating drive component 20 includes a second rotating motor 201 fixedly connected to the rear end face of the truck bed 1, with the power output axis parallel to the left and right directions, and a second driven gear 202 coaxially connected to the winding roller 18; wherein, the second rotating motor 201 is connected to a second driving gear 2011 that meshes with the second driven gear 202.

[0129] The translation bar 9 is arranged on the upper side of the truck bucket 1, and its length direction is parallel to the left and right direction. The left and right ends of the translation bar 9 are respectively located on the left and right sides of the inner cavity of the truck bucket 1, and are both slidably connected to the truck bucket 1 along the front and rear directions.

[0130] Among them, a dustproof belt 30 is wound on the winding roller 18; the dustproof belt 30 passes through the strip hole 172 and extends out, and the extended end of the dustproof belt 30 is connected to the translation bar 9, so that when the translation bar 9 moves toward the front, the dustproof belt 30 is rolled out and closes the opening of the truck bed 1.

[0131] In some embodiments, as Figure 1 、 Figure 16 and Figure 17 As shown, a follower nut 91 is fixedly connected to the translation bar 9, the axial direction of the follower nut 91 is parallel to the up-down direction, and a positioning bolt 92 is threadedly connected to the follower nut 91; in this embodiment, the follower nut 91 is fixedly connected to the upper side surface of the translation bar 9, and the translation bar 9 has a through hole that passes through in the up-down direction and is connected to the hole body on the follower nut 91.

[0132] In addition, the upper side surface of the bucket 1 is provided with a plurality of docking grooves 19 spaced apart in the front-to-rear direction and suitable for inserting the positioning bolts 92 .

[0133] In actual use, when the translating bar 9 moves backward to abut the bar shell 17, the positioning bolt 92 is suitable for being inserted into one of the docking grooves 19; when the translating bar 9 moves forward to close the opening of the truck bed 1 with the dustproof belt 30, the positioning bolt 92 is suitable for being inserted into the other docking groove 19, so as to realize the locking of the translating bar 9 at two special positions.

[0134] The above content is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A vehicle-mounted soil spreading device suitable for soft ground, comprising a bucket connected to the rear end of the vehicle body for accommodating backfill soil, characterized in that: The inner bottom surface of the bucket is provided with a discharge port, and the vehicle-mounted soil spreading device further comprises: A rotating roller is arranged in the truck bucket and rotates in the left-right direction, and its axial direction is parallel to the left-right direction to close the discharge port; the rotating roller is drivingly connected to a first rotating drive member for driving it to rotate about its central axis, and a plurality of soil storage troughs are provided on the outer peripheral wall of the rotating roller, which are arranged at intervals along the circumference thereof and are used for receiving backfill soil; when the rotating roller rotates, some of the soil storage troughs are directed toward the discharge port, so that the backfill soil therein falls to the ground through the discharge port; a tamping assembly, disposed on the bottom surface of the truck bucket and located behind the discharge port, for tamping backfill soil on the ground; and a soil rolling assembly disposed at the rear side of the tamping assembly and connected to the bucket via an adjustment structure, for supporting the ground and rolling the compacted backfill; and the adjustment structure is capable of adjusting the distance between the soil rolling assembly and the bucket to increase or decrease the force applied by the soil rolling assembly to the backfill; The outer peripheral wall of the rotating roller is provided with a receiving groove extending along its axial direction, and a bulldozer block is slidably connected in the receiving groove; Wherein, an elastic reset member is provided between the bulldozer block and the bottom of the accommodating trough, and the elastic reset member can drive the bulldozer block to move so that part of the bulldozer block extends out of the accommodating trough and pushes the backfill soil in the discharge port or the bucket in a direction away from the central axis of the rotating roller; Furthermore, the protruding end of the bulldozer block adopts an arc-shaped structure, so that when the protruding portion of the bulldozer block abuts against the inner wall of the bucket, the bulldozer block is retracted into the accommodating groove and the elastic return member is elastically compressed.

2. The vehicle-mounted soil spreading device suitable for soft ground as claimed in claim 1, characterized in that: The rotating roller is located at the front end of the bucket, and the front side of the bucket has a concave arc surface suitable for connecting with the outer wall of the rotating roller; a reserved hole is opened on the concave arc surface that passes through in the front-to-back direction and is suitable for communicating with the receiving groove, and the bucket also includes: The stop block is slidably inserted into the reserved hole along the front-back direction, and its rear end surface adopts an arc surface structure adapted to the concave arc surface; the upper side surface of the stop block is provided with a groove, and the front side surface of the groove adopts an inclined surface inclined from bottom to top toward the front side; an elastic driving member, fixedly disposed on a side of the stop block facing away from the rotating roller and connected to the stop block so as to drive the stop block to move toward the rotating roller; when the rotating roller rotates until the accommodating groove is connected to the reserved hole, the elastic driving member can drive the stop block to move into the accommodating groove and elastically compress the elastic return member to limit the rotation of the rotating roller relative to the bucket; and A transmission plate is slidably arranged on the upper side of the stop block in the up-down direction, and is transmission-connected to a first linear cylinder for driving it to move in the up-down direction; Wherein, when the stop block is inserted into the accommodating groove, the front side surface of the groove is at the front side of the truck bed, so that the transmission plate abuts against the front side surface of the groove when moving downward, and drives the stop block to move toward the front side until it is out of the accommodating groove and the elastic driving member is elastically compressed; when the transmission plate abuts against the bottom of the groove, the rear end face of the stop block is concentrically arranged with the concave arc surface.

3. The vehicle-mounted soil spreading device suitable for soft ground as claimed in claim 2, characterized in that: The elastic driving member comprises: a bracket, disposed in front of the reserved hole and fixedly connected to the front side of the bucket; and a second spring fixedly connected to the side of the bracket facing the bucket and connected to the stop block, so that when the rear end surface of the stop block is concentrically arranged with the concave arc surface, the second spring is in an elastically compressed state or a balanced state; In which, a slot is provided on the front end face of the stop block, and the bracket has a fixed shaft extending toward the stop block and inserted into the slot; the second spring is sleeved on the fixed shaft, and when the rear end face of the stop block is concentrically arranged with the concave arc surface, the extended end of the fixed shaft abuts against the bottom of the slot.

4. The vehicle-mounted soil spreading device suitable for soft ground as claimed in claim 1, characterized in that: The rammed earth assembly comprises: A plurality of second linear cylinders are arranged in parallel on the bottom surface of the bucket along the left-right direction, and the power output end of each second linear cylinder is arranged downward; and A plurality of rammed earth plates are arranged on the lower sides of the plurality of second linear cylinders in a one-to-one correspondence, and each of the rammed earth plates is connected to the power output end of the corresponding second linear cylinder via an elastic telescopic member; Among them, there is a linkage structure between the two rammed earth plates adjacent to each other in the left and right directions; when the linkage structure connects the two rammed earth plates and one of the rammed earth plates moves in the up and down directions, the other rammed earth plate moves synchronously to make the elastic telescopic member stretch or shrink accordingly.

5. The vehicle-mounted soil spreading device suitable for soft ground as claimed in claim 4, characterized in that: The linkage structure includes: A fixing seat fixedly connected to one of the rammed earth plates, and having two vertical plates arranged side by side in the front-to-back direction on its upper side; each of the vertical plates is provided with a positioning hole extending through the front-to-back direction, and the two positioning holes are coaxially connected; and a swing arm hinged to the other rammed earth plate, and having an alignment hole extending therethrough in the front-to-back direction at its swing end; when the upper side surfaces of the two rammed earth plates are coplanar, the swing arm is adapted to swing between the two upright plates so that the alignment hole communicates with the positioning hole; and a sliding arm slidably connected to the fixing base in a front-to-rear direction, adapted to be inserted into the positioning hole and the alignment hole that are interconnected, and to limit the swinging of the swing arm relative to the fixing base; Wherein, the sliding arm is suitable for passing through the two positioning holes and extending out, and a thread groove is provided on its extending end surface; a docking bolt is threadedly connected in the thread groove, and the head of the docking bolt is suitable for abutting the vertical plate to limit the sliding arm from withdrawing from the positioning hole and to limit the separation of the sliding arm and the swing arm.

6. The vehicle-mounted soil spreading device suitable for soft ground as claimed in claim 4, characterized in that: The elastic expansion member comprises: a sleeve coaxially connected to the power output end of the second linear cylinder, adopting an internal hollow structure, and a through hole communicating with the interior of the sleeve at the lower end; an insert rod fixedly connected to the upper side of the rammed earth plate and slidably inserted into the through hole; the outer peripheral wall of the insert rod is connected to the inner peripheral wall of the through hole, and the upper end of the insert rod has a blocking portion extending radially outward and suitable for abutting the inner bottom surface of the sleeve; and The third spring is arranged in the sleeve and is sleeved on the outer periphery of the insertion rod so that its upper and lower ends respectively abut against the blocking portion and the inner bottom surface of the sleeve.

7. The vehicle-mounted soil spreading device suitable for soft ground as claimed in claim 1, characterized in that: The soil-milling assembly comprises: a mounting frame, disposed below the truck bucket and connected to the truck bucket via the adjustment structure; and A rolling wheel is arranged on the lower side of the mounting frame, with its axial direction parallel to the left-right direction, and the rolling wheel is connected to the mounting frame for rotation in the left-right direction so as to roll along the paving surface; Wherein, the regulating structure comprises: a connecting arm, disposed between the bucket and the mounting frame, with upper and lower ends thereof respectively connected to the bucket and the mounting frame for rotation in left and right directions; and A swing seat is arranged in parallel with the connecting arm in the front-to-back direction, and is hinged to the truck bucket in the left-right direction; a third linear cylinder is fixedly connected to the swing end face of the swing seat, the power output axis of the third linear cylinder is perpendicular to the hinge axis of the swing seat, and the power output end of the third linear cylinder is hinged to the mounting frame in the left-right direction.

8. The vehicle-mounted soil spreading device suitable for soft ground as claimed in claim 1, characterized in that: The bucket adopts a structure open toward the top, and the bucket further comprises: A strip-shaped shell is detachably connected to the rear end of the bucket, and has a soil discharge port on the side facing the bucket that is connected to the interior of the bucket; when the strip-shaped shell is connected to the bucket, the outer side of the bucket closes the soil discharge port; the strip-shaped shell is also provided with a strip-shaped hole that is connected to the interior of the bucket and extends in the left-right direction, and the two ends of the strip-shaped hole are respectively located on the left and right sides of the inner cavity of the bucket; A winding roller is provided in the strip-shaped shell, and its axial direction is parallel to the left-right direction; the winding roller is connected to the strip-shaped shell in a rotational manner along the left-right direction, and is transmission-connected to a second rotation driving member; and A translation bar is provided on the upper side of the bucket, with its length direction parallel to the left-right direction, and the left and right ends of the translation bar are respectively located on the left and right sides of the inner cavity of the bucket, and are both slidably connected to the bucket along the front-rear direction; Wherein, a dustproof belt is wound on the winding roller; the dustproof belt passes through the strip hole and extends out, and the extended end of the dustproof belt is connected to the translation bar, so that when the translation bar moves toward the front, the dustproof belt is spread out and closes the opening of the truck bed.

9. The vehicle-mounted soil spreading device suitable for soft ground as claimed in claim 8, characterized in that: A follower nut is fixedly connected to the translation bar, the axial direction of the follower nut is parallel to the up-down direction, and a positioning bolt is threadedly connected to the follower nut; the upper side surface of the truck bucket is provided with a plurality of docking grooves arranged at intervals along the front-to-back direction and suitable for inserting the positioning bolts; When the translation bar moves backward to abut against the strip shell, the positioning bolt is suitable for being inserted into one of the docking grooves; when the translation bar moves forward to close the opening of the truck bed by the dustproof belt, the positioning bolt is suitable for being inserted into the other docking groove.

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