Earthwork backfilling and tamping device

By integrating a soil replenishment mechanism and a crushing component, the soil backfilling and compaction device solves the problems of low operating efficiency and uneven compaction of soil backfilling devices, realizes automatic soil replenishment and crushing, and improves the compaction quality.

CN121992837APending Publication Date: 2026-05-08ANHUI SURVEY & DESIGN INST OF WATER CONSERVANCY & HYDROPOWER
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ANHUI SURVEY & DESIGN INST OF WATER CONSERVANCY & HYDROPOWER
Filing Date
2026-02-10
Publication Date
2026-05-08

AI Technical Summary

Technical Problem

Existing earthwork backfilling and compaction equipment is inefficient in terms of operation, making it difficult to automatically replenish soil and break up large particles in real time, resulting in uneven compaction and reduced quality.

Method used

An earthwork backfilling and compaction device was designed, which integrates a soil replenishment mechanism and a crushing component. It replenishes soil material evenly through an output pipe and crushes the soil material using a lifting frame and crushing teeth. Combined with a lifting control component and push plate adjustment, it achieves uniform output and compaction of soil material.

Benefits of technology

It enables automatic and uniform replenishment of soil during vehicle movement, crushes large particles, ensures that the soil is output in small particle form, and improves the uniformity and quality of compaction.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention discloses an earthwork backfilling and tamping device, and relates to the technical field of earthwork backfilling and tamping. Comprising a vehicle body, a mounting frame is mounted on the vehicle body, a compression roller is mounted on the mounting frame, a soil supplementing mechanism is mounted at the front end of the mounting frame, and the soil supplementing mechanism comprises a stock bin fixed to the front end of the mounting frame; the multiple output pipes are densely distributed at the bottom of the stock bin, and the bottom ends of the output pipes communicate with the interior of the stock bin; and the crushing assembly is installed in the stock bin and used for crushing the soil materials in the stock bin, so that the soil materials can be output through the bottom end of the output pipe. By arranging the soil supplementing mechanism, soil can be evenly supplemented through the soil supplementing mechanism in the running process of the vehicle body, the soil is output to the movement path of the pressing roller through the output pipe, and therefore the pressing roller is used for tamping.
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Description

Technical Field

[0001] This invention relates to the field of earthwork backfilling and compaction technology, and in particular to an earthwork backfilling and compaction device. Background Technology

[0002] Earthwork backfilling is a crucial process in construction engineering, encompassing various types such as foundation filling, pit (trench) or pipe trench backfilling, indoor floor backfilling, and outdoor site leveling. In road engineering, embankments, as roadbeds raised above the original ground level, require layered filling and compaction to support the pavement structure. Traditional compaction methods include rolling, tamping, vibratory compaction, and compaction using earthmoving equipment. Currently available earthwork backfilling and compaction equipment suffers from significant shortcomings in operational efficiency. An effective soil supply and particle control system is essential. Traditional compaction equipment requires manual pre-adjustment of soil distribution and struggles to automatically replenish soil during compaction, leading to uneven compaction. Furthermore, the presence of large particles affects compaction effectiveness, and existing equipment typically lacks integrated crushing capabilities, hindering real-time soil crushing and resulting in decreased compaction quality. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing an earthwork backfilling and compaction device.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: An earthwork backfilling and compaction device includes a vehicle body, a mounting frame mounted on the vehicle body, a pressure roller mounted on the mounting frame, and a soil-filling mechanism mounted at the front end of the mounting frame. The soil-filling mechanism includes: The hopper is fixed to the front end of the mounting frame; Output pipes: Multiple output pipes are densely distributed at the bottom of the hopper, and the bottom end of the output pipes is connected to the inside of the hopper. The crushing assembly is installed inside the hopper to crush the soil material inside, allowing it to be output through the bottom of the output pipe.

[0005] As a preferred embodiment of the present invention, the crushing component comprises: The lifting frame has guide rods installed on both sides, and side supports are installed on both sides of the top of the hopper. The guide rods slide up and down and are connected to the inner wall of the side supports. A spring, one end of which is fixed to the lifting frame and the other end of which is fixed to the side bracket; The crushing section is fixed at one end to the lifting frame and extends into the output pipe at the other end. The lifting control component is used to control the lifting and lowering of the lifting frame.

[0006] As a preferred embodiment of the present invention, the crushing section comprises: A crushing rod, one end of which is fixed to the lifting frame; The crushing teeth are distributed on the outer side of the bottom end of the crushing rod, and multiple fixed blades are set on the inner side of the output tube. The end of the crushing rod with the crushing teeth extends into the output tube, and the crushing teeth and fixed blades are staggered.

[0007] As a preferred embodiment of the present invention, the lifting control component includes: Guide frame, the guide frame is fixed to the side wall of the mounting frame; The slide bar is slidably connected to the inner wall of the guide frame; The protrusion is fixed above the end of the slide bar. Multiple protrusions are linearly distributed. An end block is fixed at the bottom of the guide rod. The end block is located on the movement path of the protrusion. The linkage is fixed at the end of the slide rod away from the protrusion. The slide rod is connected to the roller shaft of the pressure roller based on the linkage, which converts the circular motion into the linear reciprocating motion of the slide rod.

[0008] As a preferred embodiment of the present invention, the linkage unit includes: A strip frame, fixed to the end of a slide bar, with a strip groove provided on the strip frame; A turntable is fixed on the roller shaft of the pressure roller. A lever is installed on the turntable, with one end of the lever extending into the strip groove.

[0009] As a preferred embodiment of the present invention, the front ends of the slide rods on both sides are detachably mounted with the same connecting frame.

[0010] As a preferred embodiment of the present invention: a first mounting base is fixed on the side of the hopper away from the pressure roller, a first push plate is mounted on the bottom of the first mounting base in an adjustable manner, and a first fixing knob for fixing the first push plate is connected to the inner wall of one side of the first mounting base by a thread.

[0011] As a preferred embodiment of the present invention: a second mounting base is mounted on the mounting bracket, a second push plate is mounted on the bottom of the second mounting base in an adjustable manner, and a second fixing knob for fixing the second push plate is connected to the inner wall of one side of the second mounting base by a thread.

[0012] As a preferred embodiment of the present invention: the turntable is provided with an adjustment groove, an adjustment block is adjustablely installed in the adjustment groove, a lever is fixed on the adjustment block, and the adjustment block is connected by a threaded fastening knob for fixing the adjustment block in the adjustment groove.

[0013] As a preferred embodiment of the present invention, the turntable is provided with scale lines, which are located on the side of the adjustment groove.

[0014] The beneficial effects of this invention are as follows: 1. By setting up a soil replenishment mechanism, the present invention can uniformly replenish soil material during vehicle travel. The soil material is output through the output pipe to the movement path of the pressure roller, thereby compacting it using the pressure roller.

[0015] 2. By setting up a crushing component, the present invention can crush the material at the output pipe based on the up and down movement of the lifting frame, and then crush the material through the crushing teeth and fixed blades, so that the material passing through the output pipe is output in small and uniform particles as much as possible; thus avoiding the situation where large particles of material are not compacted well.

[0016] 3. This invention, by setting up a lifting control component, can drive the turntable to rotate based on the rotation of the pressure roller. The rotation of the turntable can drive the lever to rotate. During the rotation of the lever, it can push the strip frame to move, so that the slide bar moves under the guidance of the guide frame, thereby realizing the circular motion of the lever, which drives the strip frame to perform linear reciprocating motion, realizing repeated contact between the protrusion and the end block, thereby making the lifting frame move up and down to achieve the crushing of soil. Since this motion is based on the motion of the pressure roller, it can adaptively cooperate at different moving speeds to ensure uniform output of soil.

[0017] 4. By setting up structures such as a first pusher plate and a second pusher plate, the present invention can adjust the height of the first pusher plate and the second pusher plate according to actual needs, thereby pushing and evenly distributing excess soil in a localized area, so as to facilitate uniform compaction.

[0018] 5. By setting up structures such as adjustment blocks, this invention can adjust the position of the adjustment blocks in the adjustment groove, thereby changing the rotation radius of the lever, and thus changing the reciprocating distance of the bar frame and slide bar, improving adjustability and practicality. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of an earthwork backfilling and compaction device proposed in this invention; Figure 2 This is a schematic diagram of the soil replenishment mechanism of an earthwork backfilling and compaction device proposed in this invention; Figure 3 This is a schematic diagram of the cross-section of the hopper and the crushing rod of the earthwork backfilling and compaction device proposed in this invention. Figure 4 This is a schematic diagram of the structure of the lever and the strip frame of the earthwork backfilling and compaction device proposed in Embodiment 2 of the present invention; Figure 5 This is a schematic diagram of the structure of a turntable for an earthwork backfilling and compaction device proposed in Embodiment 2 of the present invention.

[0020] In the diagram: 1-Car body; 2-Pressure roller; 3-Lifting frame; 4-Hopper; 5-Connecting frame; 6-First mounting seat; 7-First push plate; 8-First fixing knob; 9-Guide rod; 10-Guide frame; 11-Turntable; 12-Strip frame; 13-Mounting frame; 14-Slide rod; 15-End block; 16-Protrusion; 17-Second fixing knob; 18-Toggle lever; 19-Spring; 20-Crushing rod; 21-Crushing tooth; 22-Output pipe; 23-Fixing blade; 24-Scale line; 25-Fasting knob; 26-Adjusting block; 27-Adjusting groove; 28-Second mounting seat; 29-Second push plate. Detailed Implementation

[0021] The technical solution of the present invention will be further described in detail below with reference to specific embodiments.

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

[0023] Example 1: An earthwork backfilling and compaction device, such as Figure 1-5 As shown, the device includes a vehicle body 1, on which a mounting frame 13 is mounted, a pressure roller 2 is mounted on the mounting frame 13, and a soil-filling mechanism is mounted at the front end of the mounting frame 13. The soil-filling mechanism includes: Material bin 4 is fixed to the front end of mounting frame 13; Output pipe 22, multiple output pipes 22 are densely distributed at the bottom of the hopper 4, and the bottom end of the output pipe 22 is connected to the inside of the hopper 4; The crushing component is installed inside the hopper 4 and is used to crush the soil inside the hopper 4 so that it can be output through the bottom end of the output pipe 22. By setting up a soil replenishment mechanism, soil can be evenly replenished during the movement of the vehicle body 1. The soil is output through the output pipe 22 to the movement path of the pressure roller 2, thereby compacting it using the pressure roller 2.

[0024] To facilitate efficient crushing; such as Figure 3 As shown, the crushing component includes: The lifting frame 3 has guide rods 9 installed on both sides, and the top of the hopper 4 has side supports installed on both sides. The guide rods 9 are slidably connected to the inner wall of the side supports. Spring 19, one end of spring 19 is fixed to the lifting frame 3, and the other end of spring 19 is fixed to the side bracket; The crushing section is fixed at one end to the lifting frame 3 and extends into the output pipe 22 at the other end. The lifting control component is used to control the lifting of the lifting frame 3.

[0025] To facilitate efficient crushing; such as Figure 3 As shown, the crushing section includes: The crushing rod 20 is fixed at one end to the lifting frame 3; The crushing teeth 21 are distributed on the outer side of the bottom end of the crushing rod 20. Multiple fixed blades 23 are provided on the inner side of the output pipe 22. The end of the crushing rod 20 with the crushing teeth 21 extends into the output pipe 22. The crushing teeth 21 and the fixed blades 23 are misaligned. By setting up the crushing components, the material at the output pipe 22 can be crushed by the up and down movement of the lifting frame 3, and then by the crushing teeth 21 and the fixed blade 23, so that the material passing through the output pipe 22 is output in small and uniform particles as much as possible; thus avoiding the situation where large particles of material are not compacted well.

[0026] To facilitate control of the vertical movement of the lifting frame 3; such as Figure 1 , Figure 2 As shown, the lifting control component includes: Guide frame 10, the guide frame 10 is fixed to the side wall of the mounting frame 13; Slide rod 14 is slidably connected to the inner wall of guide frame 10; A protrusion 16 is fixed above the end of the slide rod 14. Multiple protrusions 16 are linearly distributed. An end block 15 is fixed at the bottom of the guide rod 9. The end block 15 is located on the movement path of the protrusion 16. The linkage is fixed to the end of the slide rod 14 away from the protrusion 16. The slide rod 14 is connected to the roller shaft of the pressure roller 2 based on the linkage, which converts the circular motion into the linear reciprocating motion of the slide rod 14.

[0027] To control the reciprocating motion of slide bar 14; such as Figure 2 As shown, the linkage includes: A strip frame 12 is fixed to the end of the slide bar 14, and a strip groove is provided on the strip frame 12; Turntable 11 is fixed on the roller shaft of pressure roller 2. A lever 18 is installed on turntable 11, and one end of lever 18 extends into the strip groove. By setting up a lifting control component, the rotation of the pressure roller 2 can drive the turntable 11 to rotate via the roller shaft. The rotation of the turntable 11 can drive the lever 18 to rotate. During the rotation of the lever 18, it can push the strip frame 12 to move, so that the slide rod 14 moves under the guidance of the guide frame 10, thereby realizing the circular motion of the lever 18, pushing the strip frame 12 to make linear reciprocating motion, realizing the repeated contact between the protrusion 16 and the end block 15, thereby making the lifting frame 3 move up and down, realizing the crushing of soil. Since this motion is based on the motion of the pressure roller 2, it can adapt to different moving speeds to ensure uniform output of soil.

[0028] To improve structural stability; such as Figure 2 As shown, the front ends of the slide rods 14 on both sides are detachably mounted with the same connecting bracket 5.

[0029] To ensure the ground is as flat as possible; such as Figure 2 As shown, a first mounting base 6 is fixed on the side of the hopper 4 away from the pressure roller 2. A first push plate 7 is mounted on the bottom of the first mounting base 6 in an adjustable manner. A first fixing knob 8 for fixing the first push plate 7 is connected to the inner wall of one side of the first mounting base 6 by a thread.

[0030] To ensure the ground is as flat as possible; such as Figure 2 As shown, a second mounting base 28 is mounted on the mounting bracket 13. A second push plate 29 is mounted on the bottom of the second mounting base 28 in an adjustable manner. A second fixing knob 17 for fixing the second push plate 29 is connected to the inner wall of one side of the second mounting base 28 by a thread. By setting up structures such as the first push plate 7 and the second push plate 29, the height of the first push plate 7 and the second push plate 29 can be adjusted according to actual needs to even out excess soil in some areas, so as to facilitate uniform compaction.

[0031] Example 2: An earthwork backfilling and compaction device, such as Figure 1-5 As shown, this embodiment makes the following improvements based on embodiment 1: The turntable 11 is provided with an adjustment groove 27, and an adjustment block 26 is adjustablely installed in the adjustment groove 27. The lever 18 is fixed on the adjustment block 26, and the adjustment block 26 is connected by a fastening knob 25 for fixing the adjustment block 26 in the adjustment groove 27 via a thread. By setting up structures such as the adjustment block 26, the position of the adjustment block 26 in the adjustment groove 27 can be adjusted, thereby changing the rotation radius of the lever 18, which in turn changes the reciprocating distance of the bar frame 12 and the slide bar 14, improving adjustability and practicality.

[0032] like Figure 5 As shown, the turntable 11 is provided with scale lines 24, which are located on the side of the adjustment groove 27.

[0033] For the parts not disclosed in detail in this invention, such as necessary control modules, specific control methods, signal transmission methods, power supply methods, etc., those skilled in the art can ensure the smooth implementation of the solution of this invention based on common sense, normal thinking logic and existing technology.

[0034] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A backfilling and compaction device for earthwork, characterized in that, The vehicle includes a body (1), on which a mounting frame (13) is mounted, and a pressure roller (2) is mounted on the mounting frame (13). A soil-filling mechanism is mounted at the front end of the mounting frame (13), and the soil-filling mechanism includes: The hopper (4) is fixed to the front end of the mounting frame (13); Output pipe (22), multiple output pipes (22) are densely distributed at the bottom of the silo (4), and the bottom end of the output pipe (22) is connected to the inside of the silo (4); The crushing assembly is installed inside the silo (4) to crush the soil inside the silo (4) so ​​that it can be output through the bottom of the output pipe (22).

2. The earthwork backfilling and compaction device according to claim 1, characterized in that, The crushing component includes: Lifting frame (3), guide rods (9) are installed on both sides of the lifting frame (3), and side supports are installed on both sides of the top of the hopper (4). The guide rods (9) slide up and down to the inner wall of the side supports. Spring (19), one end of spring (19) is fixed to the lifting frame (3), and the other end of spring (19) is fixed to the side bracket; The crushing section is fixed at one end to the lifting frame (3) and extends to the inside of the output pipe (22) at the other end. The lifting control component is used to control the lifting of the lifting frame (3).

3. The earthwork backfilling and compaction device according to claim 2, characterized in that, The crushing section includes: A crushing rod (20) is fixed at one end to a lifting frame (3); The crushing teeth (21) are distributed on the outer side of the bottom end of the crushing rod (20). Multiple fixed blades (23) are provided on the inner side of the output tube (22). The end of the crushing rod (20) with the crushing teeth (21) extends into the output tube (22). The crushing teeth (21) and the fixed blades (23) are misaligned.

4. The earthwork backfilling and compaction device according to claim 3, characterized in that, The lifting control component includes: Guide frame (10), the guide frame (10) is fixed to the side wall of the mounting frame (13); The slide rod (14) is slidably connected to the inner wall of the guide frame (10); The protrusion (16) is fixed above the end of the slide bar (14). Multiple protrusions (16) are linearly distributed. The bottom end of the guide rod (9) is fixed with an end block (15). The end block (15) is located on the movement path of the protrusion (16). The linkage part is fixed at the end of the slide rod (14) away from the protrusion (16). The slide rod (14) is connected to the roller shaft of the pressure roller (2) based on the linkage part, and the circular motion is converted into the linear reciprocating motion of the slide rod (14).

5. The earthwork backfilling and compaction device according to claim 4, characterized in that, The linkage unit includes: A strip frame (12) is fixed to the end of a slide bar (14), and a strip groove is provided on the strip frame (12); Turntable (11) is fixed on the roller shaft of pressure roller (2). A lever (18) is installed on the turntable (11), and one end of the lever (18) extends into the strip groove.

6. The earthwork backfilling and compaction device according to claim 4, characterized in that, The front ends of the slide bars (14) on both sides are detachably mounted with the same connecting bracket (5).

7. The earthwork backfilling and compaction device according to claim 1, characterized in that, The hopper (4) is fixed with a first mounting base (6) on the side away from the pressure roller (2). The bottom of the first mounting base (6) is equipped with a first push plate (7) that can be adjusted up and down. The inner wall of one side of the first mounting base (6) is connected by a first fixing knob (8) for fixing the first push plate (7) by thread.

8. The earthwork backfilling and compaction device according to claim 1, characterized in that, The mounting bracket (13) is equipped with a second mounting seat (28). The bottom of the second mounting seat (28) is equipped with a second push plate (29) that can be adjusted up and down. The inner wall of one side of the second mounting seat (28) is connected by a second fixing knob (17) for fixing the second push plate (29) through a thread.

9. The earthwork backfilling and compaction device according to claim 5, characterized in that, The turntable (11) is provided with an adjustment groove (27), and an adjustment block (26) is installed in the adjustment groove (27). A lever (18) is fixed on the adjustment block (26), and the adjustment block (26) is connected by a threaded fastening knob (25) for fixing the adjustment block (26) in the adjustment groove (27).

10. The earthwork backfilling and compaction device according to claim 9, characterized in that, The turntable (11) is provided with scale lines (24), which are located on the side of the adjustment groove (27).