Vehicle-mounted soil paving device suitable for soft stratum

Abstract

The invention provides a vehicle-mounted soil paving device suitable for a soft stratum. The vehicle-mounted soil paving device comprises a vehicle hopper, a rotating roller, a soil ramming assembly and a soil grinding assembly. The car hopper is used for containing backfill soil, and a discharging opening is formed in the inner bottom face of the car hopper. The rotating roller is rotationally arranged in the car hopper and is in transmission connection with a first rotating driving component, and a plurality of soil storage grooves are formed in the peripheral wall of the rotating roller; the earth ramming assembly is arranged on the bottom face of the vehicle hopper and located on the rear side of the discharging opening so as to be used for ramming backfill earth on the ground. The soil grinding assembly is arranged on the rear side of the soil ramming assembly and connected with the vehicle hopper through an adjusting structure so as to be supported on the ground and grind the backfill soil in the rammed state. In addition, the adjusting structure can adjust the distance between the soil grinding assembly and the vehicle hopper so as to increase or reduce the acting force applied to the backfill soil by the soil grinding assembly. By means of the vehicle-mounted soil paving device suitable for the soft stratum, it can be guaranteed that the thickness of a soil paving surface of backfill soil paving construction is consistent, and it is guaranteed that the quality of the backfill soil paving construction is kept stable.

Description

Technical Field

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

[0002] In the field of engineering construction, especially when it comes to the treatment of soft strata, the use of fluidized backfill soil for soil laying is a vital task. Due to the physical characteristics of the soft strata themselves, such as low strength, high compressibility and unstable structure, higher requirements are placed on construction technology and equipment; specifically, when performing soil laying construction on soft strata, it is necessary to evenly spread the configured backfill soil materials with a certain fluidity in the area, which requires appropriate treatment of the soft strata in the early stage, and then evenly spread the fluidized backfill soil materials according to the thickness required by the design, so that the soil materials are evenly distributed in the construction area, so as to ensure that the backfill soil can form a uniform and stable structure after solidification.

[0003] In the prior art, backfill soil is transported to the soil paving area by a soil delivery vehicle. Specifically, the backfill soil is loaded in the soil delivery vehicle; when the soil delivery vehicle passes through the soil paving area, the reserved opening on the bottom of the vehicle bucket is opened, so that the backfill soil in the vehicle bucket is evenly discharged under the action of gravity.

[0004] The inventors discovered that during the backfill laying process, the soil in the truck bed will continue to decrease, the squeezing effect between the soil bodies will decrease, and the soil discharge efficiency will decrease, 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 laying 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 to ensure that the quality of the backfill soil paving construction remains stable.

[0006] To achieve the above purpose, the technical solution adopted in this application is: A vehicle-mounted soil spreading device suitable for soft strata is provided, comprising a bucket connected to the rear end of a vehicle body and used to accommodate 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: 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 driving member for driving it to rotate around the central axis, and a plurality of soil storage grooves are arranged at intervals along the circumference of the rotating roller and are used for backfill soil to enter; when the rotating roller rotates, part of the soil storage grooves face the discharge port, so that the backfill soil therein falls to the ground through the discharge port; A tamping assembly is disposed on the bottom surface of the truck bucket and at the rear side of the discharge port to tamp the backfill soil on the ground; and The soil rolling assembly is arranged at the rear side of the tamping assembly and is connected to the truck bucket through an adjustment structure, so as to be used for supporting the backfill soil in a rolling and compacted state on the ground; and the adjustment structure can adjust the distance between the soil rolling assembly and the truck bucket to increase or decrease the force applied by the soil rolling assembly to the backfill soil.

[0007] In a possible implementation, a receiving groove extending along the axial direction of the rotating roller is provided on the outer peripheral wall of the rotating roller, and a bulldozer block is slidably connected in the receiving groove; There is an elastic reset member between the bulldozer block and the bottom of the receiving groove, and the elastic reset member can drive the bulldozer block to move so that part of the bulldozer block extends out of the receiving groove and pushes the backfill soil in the discharge port or the bucket in the direction away from the central axis of the rotating roller; Furthermore, the extended end of the bulldozer block adopts an arc-shaped structure, so that when the extended 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.

[0008] In a possible implementation, 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; the concave arc surface is provided with a reserved hole that penetrates in the front-to-back direction and is suitable for communicating with the accommodating groove, and the bucket further includes: The stop block is inserted into the reserved hole by sliding 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, which is fixedly arranged on a side of the stop block facing away from the rotating roller and is 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 receiving groove is connected to the reserved hole, the elastic driving member can drive the stop block to move into the receiving groove and cause the elastic reset member to be elastically compressed so as 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 located at the front side of the truck bucket, 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 surface of the stop block is concentrically arranged with the concave arc surface.

[0009] In a possible implementation, the elastic driving member includes: A bracket, which is arranged at the front side of the reserved hole and is fixedly connected to the front side of the bucket; and A second spring is fixedly connected to the side of the bracket facing the bucket and is 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; Among them, 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.

[0010] In a possible implementation, the rammed earth assembly includes: 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 of the second linear cylinders is arranged downward; and A plurality of rammed earth plates are arranged one by one on the lower sides of a plurality of the second linear cylinders, and each of the rammed earth plates is connected to a 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-right direction; when the linkage structure connects the two rammed earth plates and one of the rammed earth plates moves in the up-down direction, the other rammed earth plate moves synchronously to make the elastic telescopic member stretch or contract accordingly.

[0011] In a possible implementation, the linkage structure includes: A fixing seat, fixedly connected to one of the rammed earth plates, and having two vertical plates arranged in parallel along the front-to-back direction on its upper side; each of the vertical plates is provided with a positioning hole penetrating along the front-to-back direction, and the two positioning holes are coaxially connected; and a swing arm, hinged on the other rammed earth plate, and having a aligning hole extending through the swing end thereof in the front-to-back direction; 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 aligning hole is connected to the positioning hole; and A sliding arm is slidably connected to the fixing seat in a front-to-rear direction so as to be suitable for being 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 seat; 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.

[0012] In a possible implementation, the elastic expansion member includes: A sleeve is coaxially connected to the power output end of the second linear cylinder, adopts an internal hollow structure, and the lower end of the sleeve has a through hole communicating with the interior thereof; 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 against the inner bottom surface of the sleeve; and The third spring is arranged in the sleeve and sleeved on the outer periphery of the insertion rod so that the upper and lower ends thereof respectively abut against the blocking portion and the inner bottom surface of the sleeve.

[0013] In a possible implementation, the soil-milling assembly includes: A mounting frame is disposed below the vehicle bucket and connected to the vehicle bucket through the adjustment structure; and A rolling wheel is arranged at the lower side of the mounting frame, with its axial direction parallel to the left-right direction, and the rolling wheel is rotatably connected to the mounting frame along the left-right direction so as to roll along the paving surface; Wherein, the regulating structure comprises: A connecting arm is disposed between the bucket and the mounting frame, and its upper and lower ends are respectively connected to the bucket and the mounting frame for rotation along the left and right directions; and A swing seat is arranged in parallel with the connecting arm along the front-to-back direction, and is hinged to the truck bucket along 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 along the left-right direction.

[0014] In a possible implementation, the truck bucket adopts a structure that is open upward, and the truck bucket further includes: A strip shell is detachably connected to the rear end of the truck bucket, and has a soil discharge port on the side facing the truck bucket that is connected to the interior of the truck bucket; when the strip shell is connected to the truck bucket, the outer side of the truck bucket closes the soil discharge port; the strip shell is also provided with a strip hole that is connected to the interior of the truck bucket and extends in the left-right direction, and the two ends of the strip hole are respectively located on the left and right sides of the inner cavity of the truck bucket; A winding roller is arranged 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 for rotation along the left-right direction, and is connected to the second rotation driving member for transmission; and A translation bar is arranged on the upper side of the bucket, and its length direction is 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 with 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.

[0015] 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; a plurality of docking grooves are arranged at intervals along the front-to-back direction and are suitable for inserting the positioning bolts; Wherein, 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 the dustproof belt closing the opening of the truck box, the positioning bolt is suitable for being inserted into another of the docking grooves.

[0016] In the embodiment of the present application, the discharge port is closed by rotating the roller to ensure that the soil material will not be discharged along the discharge port when the bucket moves with the vehicle body; when the bucket moves to the point where the discharge port is above the soil paving area, the first rotating driving member drives the rotating roller to rotate, so that the backfill soil entering the soil storage tank falls out and falls into the soil paving area through the discharge port. Subsequently, the soil tamping assembly and the soil rolling assembly are used to tamp and roll the soil paving surface to ensure the flatness of the soil paving surface.

[0017] 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 on the backfill soil in real time to ensure the rolling effect.

[0018] 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 in the backfill soil paving construction is consistent, and ensure that the quality of the backfill soil paving construction remains stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 paying creative labor.

[0020] 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; Figure 2 for Figure 1 A partial enlarged schematic diagram of the upper circle A; Figure 3 for Figure 1 A top view of Figure 4 For along Figure 3 The cross-sectional structure diagram of the middle BB line; Figure 5 for Figure 4 A partial enlarged schematic diagram of the middle circle C; Figure 6 A schematic diagram of the exploded structure of the elastic driving member used in the embodiment of the present application; Figure 7 This is a schematic diagram of the combined structure of the transmission plate and the first linear cylinder used in the embodiment of the present application; Figure 8 A schematic diagram of the exploded structure of the stop block and the transmission plate used in the embodiment of the present application in a cross-sectional view; Fig. 9 A schematic diagram of the structure of the linkage structure used in the embodiment of the present application; Fig.10 This is a schematic diagram of the exploded structure of the elastic telescopic member used in the embodiment of the present application; Fig.11 It is a partially enlarged schematic diagram of the truck box used in the embodiment of the present application in a cross-sectional perspective; Fig.12 It is a schematic diagram of the three-dimensional structure of the rotating roller and the first rotating driving member in the assembled state used in the embodiment of the present application; Fig.13 A schematic diagram of the three-dimensional structure of the rotating roller used in the embodiment of the present application; Fig.14 A schematic diagram of the exploded structure of the rotating roller used in the embodiment of the present application in a cross-sectional perspective; Fig.15 A schematic diagram of the three-dimensional structure of the soil-grinding assembly used in the embodiment of the present application; Fig.16 A schematic diagram of the combined structure of the strip-shaped shell and the translation strip used in the embodiment of the present application; Fig.17 A schematic diagram of the structure of the strip-shaped shell and the translation strip used in the embodiment of the present application in a cross-sectional view; 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 groove; 22. containing groove; 221. guide rod; 23. bulldozer; 231. guide groove; 24. elastic reset member; 3. ramming assembly; 31. second linear cylinder; 32. ramming plate; 4. rolling assembly; 41. mounting frame; 42. rolling wheel; 5. adjustment structure; 51. connecting arm; 52. swing seat; 521. third linear cylinder; 6. elastic driving member; 61. bracket; 611. fixed axis; 62. second spring; 7. elastic telescopic member; 71. sleeve; 711. through hole; 72. plug 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

[0021] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0022] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can 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 can be directly connected to the other element or indirectly connected to the other element.

[0023] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present 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 should not be understood as a limitation on the present application.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0025] Please also read 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 provided by the present application comprises a vehicle bucket 1, a rotating roller 2, a soil tamping assembly 3 and a soil rolling assembly 4.

[0026] The truck 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 truck 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.

[0027] In this embodiment, a baffle 12 fixed to the front side of the discharge port 11 is also connected to the bottom surface of the truck bucket 1 to ensure that the backfill soil can maintain a downward trajectory after being discharged, or the trajectory is tilted backward to prevent the backfill soil from contacting the front wheels of the vehicle and deviating from the soil-laying area due to the rotation of the front wheels. On the other hand, the inner bottom surface of the truck bucket 1 adopts an inclined surface, or is equipped with a support pad 13 with an inclined upper side surface, to ensure that the backfill soil contained in the truck bucket 1 can move along the inclined surface to the discharge port 11, thereby ensuring the discharge efficiency and stability of the backfill soil.

[0028] 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 rotatably connected to the truck bucket 1 along the left-right direction, and is transmission-connected with a first rotating driving member 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.

[0029] In this embodiment, the first rotating drive component 10 includes a first rotating motor 101 fixed on the outer wall of the vehicle bucket 1, and a first driven gear 102 located on the outside of the vehicle bucket 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 meshing with the first driven gear 102.

[0030] A plurality of soil storage grooves 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 backfill soil to enter; wherein each soil storage groove 21 extends along the axial direction of the rotating roller 2, so that when the soil storage groove 21 is facing the backfill soil in the truck bed 1, the backfill soil will fall into the soil storage groove 21 after moving along the inclined surface to fill the soil storage groove 21; and, when the rotating roller 2 rotates, part of the soil storage groove 21 is facing the discharge port 11, so that the backfill soil therein falls out to the ground through the discharge port 11.

[0031] The tamping assembly 3 is arranged on the bottom surface of the truck bed 1 and at the rear side of the discharge port 11, so as 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.

[0032] 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 adjusting structure 5, so as to be supported on the ground and compact the backfill soil in a compacted state while the vehicle body moves forward; and the adjusting 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. In the embodiment of the present application, the discharge port 11 is closed by the rotating roller 2 to ensure that the soil material will not be discharged along the discharge port 11 when the bucket 1 moves with the vehicle body; when the bucket 1 moves to the discharge port 11 above the soil paving area, the first rotating driving member 10 drives the rotating roller 2 to rotate, so that the backfill soil entering the soil storage tank 21 can fall out and fall into the soil paving area through the discharge port 11. Subsequently, the soil paving surface is compacted and rolled by the tamping assembly 3 and the rolling assembly 4 in turn to ensure the flatness of the soil paving surface.

[0033] During the process of the rolling component 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 component 4 and the truck bed 1 can be controlled by adjusting the structure 5, so as to adjust the force applied by the rolling component 4 to the backfill soil in real time to ensure the rolling effect.

[0034] 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 in the backfill soil paving construction is consistent, and ensure that the quality of the backfill soil paving construction remains stable.

[0035] In some embodiments, Figure 5 , Fig.13 and Fig.14As 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 different relative positions 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.

[0036] There is an elastic reset member 24 between the bulldozer block 23 and the bottom of the accommodating groove 22. The 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; when the bulldozer block 23 switches to the protruding state, the bulldozer block 23 can push the backfill soil in the discharge port 11 or in the 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.

[0037] In addition, the protruding end of the bulldozer block 23 adopts an arc 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, maintain the storage state (in this state, the elastic return member 24 is elastically compressed), avoiding interference with the rotation of the rotating roller 2.

[0038] It should be noted that, in the present 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.

[0039] In some embodiments, 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.

[0040] The stop block 15 is slidably inserted into the reserved hole 14 along 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.

[0041] 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 is inclined from bottom to top toward the front side.

[0042] 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.

[0043] 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.

[0044] 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 against the front side surface of the groove 151 when moving 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.

[0045] When the transmission plate 16 abuts against 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 to ensure that the rear end face of the stop block 15 maintains 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.

[0046] In some embodiments, Figure 6 As shown, the elastic driving member 6 includes a bracket 61 and a second spring 62 .

[0047] 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 .

[0048] 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.

[0049] 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.

[0050] In some embodiments, Figure 4As shown, the tamping assembly 3 includes a plurality of second linear cylinders 31 and a plurality of tamping plates 32 .

[0051] A plurality of second linear cylinders 31 are arranged in parallel on the bottom surface of the bucket 1 along the left-right direction, and the power output end of each second linear cylinder 31 is arranged downward.

[0052] The plurality of rammed earth plates 32 are arranged one by one at the lower side of the plurality of second linear cylinders 31 , 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 .

[0053] Among them, there is a linkage structure 8 between two rammed earth plates 32 adjacent to each other in the left-right direction; when the linkage structure 8 connects the two rammed earth plates 32 and one of the rammed earth plates 32 moves in the up-down direction, the other rammed earth plate 32 moves synchronously to make the elastic telescopic member 7 stretch or contract accordingly.

[0054] 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; in 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.

[0055] 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.

[0056] In some embodiments, Fig. 9 As shown, the linkage structure 8 includes a fixed seat 81 , a swing arm 82 and a sliding arm 83 .

[0057] 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 penetrating along the front-to-back direction, and the two positioning holes 812 are coaxially connected.

[0058] The swing arm 82 is hinged on the other rammed earth plate 32, and its swing end has an alignment hole 821 that penetrates along 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.

[0059] The sliding arm 83 is slidably connected to the fixing seat 81 along the front-rear direction so as to be 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 .

[0060] 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 opened on its extending end surface; a docking bolt 832 is threadedly connected to the inner thread of the 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 to limit the separation of the sliding arm 83 and the swing arm 82.

[0061] In some embodiments, Figure 4 and Fig.10 As shown, the elastic telescopic member 7 includes a sleeve 71 , an insert rod 72 and a third spring 73 .

[0062] 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 .

[0063] 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.

[0064] The third spring 73 is disposed in the sleeve 71 and is sleeved on the outer circumference of the insertion rod 72 so that the upper and lower ends thereof abut against the blocking portion 721 and the inner bottom surface of the sleeve 71 respectively.

[0065] Among them, in the process of the rammed earth plate 32 moving up and down along the power output end of the second linear cylinder 31, the upper side surface of the rammed earth plate 32 abuts against the lower end surface of the sleeve 71, and the third spring 73 maintains a balanced state or an elastically contracted state; in the process of the rammed earth plate 32 moving up and down along with another rammed earth plate 32, the third spring 73 undergoes further elastic contraction, and the power output shaft of the second linear cylinder 31 remains stationary.

[0066] In some embodiments, Figure 4 and Fig.15As shown, the soil milling assembly 4 includes a mounting frame 41 and a milling wheel 42 .

[0067] The mounting frame 41 is disposed below the vehicle bucket 1 and is connected to the vehicle bucket 1 via the aforementioned adjustment structure 5 .

[0068] 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 rotatably connected to the mounting frame 41 along the left-right direction so as to be supported on the ground and roll along the paved surface.

[0069] Based on this, the adjusting structure 5 includes a connecting arm 51 and a swing seat 52 .

[0070] The connecting arm 51 is disposed between the bucket 1 and the mounting frame 41 , and the upper and lower ends thereof are respectively connected to the bucket 1 and the mounting frame 41 in a rotatable manner along the left-right direction.

[0071] The swing seat 52 and the connecting arm 51 are arranged in parallel along the front-to-back direction, and are hinged to the truck bucket 1 along 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 along 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 where the rotating axis of the rolling wheel 42 is located rises or falls.

[0072] In some embodiments, Fig.16 and Fig.17 As shown, the truck bed 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 truck bed 1 also includes a strip shell 17, a winding roller 18 and a translation bar 9.

[0073] The strip shell 17 is detachably connected to the rear end of the bucket 1 , and has a soil discharge port 171 on the side facing the bucket 1 that is connected to the interior of the bucket 1 .

[0074] Based on this, when the strip shell 17 is connected to the truck bucket 1, the outer side surface 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.

[0075] The strip-shaped shell 17 is also provided with a strip-shaped hole 172 which is connected to the interior thereof and extends in the left-right direction, and the two ends of the strip-shaped hole 172 are respectively located at the left and right sides of the inner cavity of the truck box 1 .

[0076] 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 rotationally connected to the strip-shaped shell 17 along the left-right direction, and is transmission-connected to a second rotation driving member 20 .

[0077] 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 bucket 1, with the power output axis parallel to the left-right direction, 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 meshing with the second driven gear 202.

[0078] The translation bar 9 is arranged on the upper side of the truck bucket 1, and its length direction is parallel to the left-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-rear direction.

[0079] 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 spread out and closes the opening of the truck box 1.

[0080] In some embodiments, Figure 1 , Fig.16 and Fig.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 penetrates along the up-down direction and is connected to the hole body on the follower nut 91.

[0081] In addition, the upper side surface of the truck bed 1 is provided with a plurality of docking grooves 19 which are arranged at intervals along the front-to-rear direction and are suitable for inserting the positioning bolts 92 .

[0082] In actual use, when the translation 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 translation bar 9 moves forward to close the opening of the truck bucket 1 with the dustproof belt 30, the positioning bolt 92 is suitable for being inserted into another docking groove 19, so as to realize the locking of the translation bar 9 at two special positions.

[0083] The above content is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope 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 driving member for driving it to rotate around the central axis, and a plurality of soil storage grooves are arranged at intervals along the circumference of the rotating roller and are used for backfill soil to enter; when the rotating roller rotates, part of the soil storage grooves face the discharge port, so that the backfill soil therein falls to the ground through the discharge port; A tamping assembly is disposed on the bottom surface of the truck bucket and at the rear side of the discharge port to tamp the backfill soil on the ground; and The soil rolling assembly is arranged at the rear side of the tamping assembly and is connected to the truck bucket through an adjustment structure, so as to be used for supporting the backfill soil in a rolling and compacted state on the ground; and the adjustment structure can adjust the distance between the soil rolling assembly and the truck bucket to increase or decrease the force applied by the soil rolling assembly to the backfill soil.

2. The vehicle-mounted soil spreading device suitable for soft ground as claimed in claim 1, characterized in that: The outer peripheral wall of the rotating roller is provided with a receiving groove extending along the axial direction thereof, and a bulldozer block is slidably connected in the receiving groove; There is an elastic reset member between the bulldozer block and the bottom of the receiving groove, and the elastic reset member can drive the bulldozer block to move so that part of the bulldozer block extends out of the receiving groove and pushes the backfill soil in the discharge port or the bucket in the direction away from the central axis of the rotating roller; Furthermore, the extended end of the bulldozer block adopts an arc-shaped structure, so that when the extended 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.

3. The vehicle-mounted soil spreading device suitable for soft ground as claimed in claim 2, 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; the concave arc surface is provided with a reserved hole that penetrates in the front-to-back direction and is suitable for communicating with the accommodating groove, and the bucket also includes: The stop block is inserted into the reserved hole by sliding 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, which is fixedly arranged on a side of the stop block facing away from the rotating roller and is 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 receiving groove is connected to the reserved hole, the elastic driving member can drive the stop block to move into the receiving groove and cause the elastic reset member to be elastically compressed so as 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 located at the front side of the truck bucket, 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 surface of the stop block is concentrically arranged with the concave arc surface.

4. The vehicle-mounted soil spreading device suitable for soft ground as claimed in claim 3, characterized in that: The elastic driving member comprises: A bracket, which is arranged at the front side of the reserved hole and is fixedly connected to the front side of the bucket; and A second spring is fixedly connected to the side of the bracket facing the bucket and is 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; Among them, 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.

5. 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 of the second linear cylinders is arranged downward; and A plurality of rammed earth plates are arranged one by one on the lower sides of a plurality of the second linear cylinders, and each of the rammed earth plates is connected to a 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-right direction; when the linkage structure connects the two rammed earth plates and one of the rammed earth plates moves in the up-down direction, the other rammed earth plate moves synchronously to make the elastic telescopic member stretch or contract accordingly.

6. The vehicle-mounted soil spreading device suitable for soft ground as claimed in claim 5, 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 in parallel along the front-to-back direction on its upper side; each of the vertical plates is provided with a positioning hole penetrating along the front-to-back direction, and the two positioning holes are coaxially connected; and a swing arm, hinged on the other rammed earth plate, and having a aligning hole extending through the swing end thereof in the front-to-back direction; 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 aligning hole is connected to the positioning hole; and A sliding arm is slidably connected to the fixing seat in a front-to-rear direction so as to be suitable for being 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 seat; 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.

7. The vehicle-mounted soil spreading device suitable for soft ground as claimed in claim 5, characterized in that: The elastic expansion member comprises: A sleeve is coaxially connected to the power output end of the second linear cylinder, adopts an internal hollow structure, and the lower end of the sleeve has a through hole communicating with the interior thereof; 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 against the inner bottom surface of the sleeve; and The third spring is arranged in the sleeve and sleeved on the outer periphery of the insertion rod so that the upper and lower ends thereof respectively abut against the blocking portion and the inner bottom surface of the sleeve.

8. 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 is disposed below the vehicle bucket and connected to the vehicle bucket through the adjustment structure; and A rolling wheel is arranged at the lower side of the mounting frame, with its axial direction parallel to the left-right direction, and the rolling wheel is rotatably connected to the mounting frame along the left-right direction so as to roll along the paving surface; Wherein, the regulating structure comprises: A connecting arm is disposed between the bucket and the mounting frame, and its upper and lower ends are respectively connected to the bucket and the mounting frame for rotation along the left and right directions; and A swing seat is arranged in parallel with the connecting arm along the front-to-back direction, and is hinged to the truck bucket along 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 along the left-right direction.

9. The vehicle-mounted soil spreading device suitable for soft ground as claimed in claim 1, characterized in that: The bucket adopts a structure open upwards, and the bucket further comprises: A strip shell is detachably connected to the rear end of the truck bucket, and has a soil discharge port on the side facing the truck bucket that is connected to the interior of the truck bucket; when the strip shell is connected to the truck bucket, the outer side of the truck bucket closes the soil discharge port; the strip shell is also provided with a strip hole that is connected to the interior of the truck bucket and extends in the left-right direction, and the two ends of the strip hole are respectively located on the left and right sides of the inner cavity of the truck bucket; A winding roller is arranged 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 for rotation along the left-right direction, and is connected to the second rotation driving member for transmission; and A translation bar is arranged on the upper side of the bucket, and its length direction is 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 with 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.

10. The vehicle-mounted soil spreading device suitable for soft ground as claimed in claim 9, 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; a plurality of docking grooves are arranged at intervals along the front-back direction and are suitable for inserting the positioning bolts. Wherein, 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 the dustproof belt closing the opening of the truck box, the positioning bolt is suitable for being inserted into another of the docking grooves.

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