Earthwork foundation pit backfill tamping machine

Abstract

The utility model relates to the field of engineering machinery discloses a kind of earthwork foundation pit backfill tamping machine, including mobile car, the front end of mobile car is provided with shell, the inside of shell is provided with tamping device, the tamping device includes pressing plate, the inner wall of shell is fixedly connected with pressing plate close to bottom, the top of pressing plate is fixedly connected with positioning rod, the top of positioning rod is fixedly connected with top plate, the top of top plate is fixedly connected with the inner wall of shell, the outside of positioning rod is provided with weight, the inside of weight and the outside of positioning rod are commonly provided with moving mechanism that drives weight to move up. In the utility model, through the setting of weight and tamping device, ensure that weight can fall naturally according to gravity when falling, so as to ensure that the point position of first contact with pressing plate is the area where original inclined surface of foundation pit is at higher position, so as to ensure that it can be naturally leveled during tamping, reach the effect of reducing subsequent leveling difficulty.

Description

Technical Field

[0001] This utility model relates to the field of engineering machinery, and in particular to a backfilling and compaction machine for earthwork foundation pits. Background Technology

[0002] A soil compactor, also known as a vibratory compactor or rammer, is a construction device that compacts soil through vibration and impact.

[0003] Currently, after backfilling earthwork foundation pits, it is often necessary to compact the soil inside the pit. During the compaction process, a heavy hammer is usually raised to a certain height, converting electrical energy or energy from other power sources into the hammer's gravitational potential energy. The hammer is then released and falls freely under gravity. During its descent, the gravitational potential energy is converted into kinetic energy. When the hammer strikes the ground, this immense kinetic energy is instantly applied to the surface. This powerful impact causes intense vibration and compression of the soil beneath the ground, rearranging soil particles and reducing porosity.

[0004] Foundation pit backfilling is a crucial step in building foundation construction. Its main function is to provide a stable base for high-rise buildings and residential buildings, ensuring their safety. However, currently, when compacting earth and stone foundation pits, if the pit itself has a slight inclination, the pressure plate, being in direct contact with the ground, often develops an angle consistent with the ground. Therefore, when the heavy hammer is dropped, it can easily cause the foundation pit to have an inclination angle, making subsequent leveling work more time-consuming. To address this issue, an earth and stone foundation pit backfilling and compaction machine is proposed. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides an earthwork foundation pit backfilling and compaction machine, which aims to improve the problem in the prior art that when the foundation pit itself has an inclination angle, the compacted foundation pit is prone to having an inclination angle, which affects subsequent construction.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a backfilling and compaction machine for earthwork foundation pits, comprising a mobile vehicle, a housing at the front end of the mobile vehicle, a compaction device inside the housing, a pressure plate, the pressure plate being fixedly connected to the inner wall of the housing near the bottom, a positioning rod being fixedly connected to the top of the pressure plate, a top plate being fixedly connected to the top of the positioning rod, the top of the top plate being fixedly connected to the inner wall of the housing, a counterweight being provided outside the positioning rod, a moving mechanism for driving the counterweight upward being provided inside the counterweight and outside the positioning rod, the moving mechanism comprising a moving tube, the inner wall of the moving tube being slidably connected to the outer wall of the positioning rod, a reset component being provided inside the moving tube, an upward moving component for driving the moving tube upward being provided inside the housing and outside the moving tube, and rollers being provided on the top of the pressure plate.

[0007] As a further description of the above technical solution: the outer wall of the moving tube is provided with a sliding groove, the inner wall of the sliding groove is slidably connected with a locking block, the end of the locking block near the positioning rod is elastically connected to the sliding groove by a spring, and the inner wall of the counterweight is provided with an annular groove.

[0008] As a further description of the above technical solution:

[0009] The reset assembly includes a movable groove, which is located at the top of the movable tube. The bottom of the movable groove is connected to a sliding groove. An insert is slidably connected to the inner wall of the movable groove, and an insertion port is provided at the top of the locking block.

[0010] As a further description of the above technical solution:

[0011] The upward moving component includes a motor, the outer wall of which is fixedly connected to the outer wall of the housing. The output shaft of the motor passes through the inner wall of the housing and is fixedly connected to a take-up reel. A pull rope is fixedly connected to the outer wall of the take-up reel. A connecting block is fixedly connected to the outer wall of the moving tube. The end of the pull rope away from the take-up reel is fixedly connected to the connecting block. A directional control block is fixedly connected to the inner wall of the top of the housing, and the pull rope passes through the inner wall of the directional control block.

[0012] As a further description of the above technical solution:

[0013] The bottom end of the moving tube is provided with a frustum-shaped hollow protrusion, and the shape of the hollow part of the moving tube matches the shape of the positioning rod.

[0014] As a further description of the above technical solution:

[0015] The socket is triangular in shape, and the bottom end of the insert has an inclined chamfer, the shape of which matches the shape of the socket.

[0016] As a further description of the above technical solution:

[0017] The weight is ring-shaped, and its inner diameter is larger than the outer diameter of the positioning rod.

[0018] As a further description of the above technical solution:

[0019] The top of the pressure plate has a spherical groove, and the roller is disposed inside the groove, with the volume of the roller inside the groove being greater than half of its total volume.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, by setting up a hammer, positioning rod, moving groove, locking block, spring, annular groove, and moving groove, it is ensured that the hammer can fall naturally according to gravity when it falls, thereby ensuring that the point where it first contacts the pressure plate is the area where the original inclined surface of the foundation pit is at a higher position. This ensures that during compaction, the pressure on the higher position in the foundation pit is greater than that on the lower position, achieving natural leveling during the compaction process and reducing the difficulty of subsequent leveling.

[0022] 2. In this utility model, by setting up a moving tube, sliding groove, locking block, spring, annular groove, moving groove, insert, and socket, it is ensured that the weight can maintain a stable state under the joint limitation of the moving tube and locking block when the device moves as a whole. When it needs to fall, the locking block can be released by the insert entering the socket, so that the weight can fall freely. This achieves the effect of ensuring that the weight will not be damaged by the device itself due to deviation during the movement of the device. Attached Figure Description

[0023] Figure 1 is a three-dimensional structural diagram of the overall structure of this utility model;

[0024] Figure 2 is a three-dimensional cross-sectional view of the shell in this utility model;

[0025] Figure 3 is a three-dimensional cross-sectional view of part of the compaction device in this utility model;

[0026] Figure 4 is an enlarged three-dimensional structural diagram of part A in Figure 3 of this utility model.

[0027] Legend:

[0028] 1. Moving vehicle; 2. Housing; 3. Compactor; 4. Counterweight; 5. Roller; 31. Pressure plate; 32. Positioning rod; 33. Top plate; 34. Moving mechanism; 35. Reset assembly; 36. Upward moving assembly; 341. Moving tube; 342. Sliding groove; 343. Locking block; 344. Spring; 345. Annular groove; 351. Moving groove; 352. Insert strip; 353. Socket; 361. Motor; 362. Take-up reel; 363. Pull rope; 364. Connecting block; 365. Directional control block. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Referring to Figure 1, one embodiment of this utility model is provided: an earthwork foundation pit backfilling and compaction machine, including a mobile vehicle 1. By setting the mobile vehicle 1, it is ensured that the equipment can compact the soil at different locations in the foundation pit, so as to facilitate the movement of the compaction equipment. The front end of the mobile vehicle 1 is provided with a shell 2.

[0031] Refer to Figure 2- Figure 4 The interior of the shell 2 is equipped with a compaction device 3, which includes a pressure plate.

[0032] 31. The bottom end of the pressure plate 31 is set to be horizontal. When the pressure plate 31 is subjected to impact force, it can achieve the effect of compacting the soil through the horizontal bottom surface. The pressure plate 31 is fixedly connected to the inner wall of the shell 2 near the bottom. The top end of the pressure plate 31 is fixedly connected to the positioning rod 32. The positioning rod 32 is cylindrical. The top end of the positioning rod 32 is fixedly connected to the top plate 33. The top plate 33 is annular in shape, and the diameter of the top plate 33 is larger than the diameter of the positioning rod 32. The top end of the top plate 33 is fixedly connected to the inner wall of the shell 2.

[0033] Reference Figures 2-4 A counterweight 4 is provided on the outside of the positioning rod 32. The counterweight 4 is ring-shaped, and its inner diameter is larger than that of the positioning rod 32. By setting the difference in diameter, it is ensured that when the counterweight 4 falls, if there is a small deviation between the direction of gravity and the actual placement direction of the positioning rod 32, the counterweight 4 will not contact the outer wall of the positioning rod 32 during the fall, thereby reducing the friction force on the counterweight 4 during the fall.

[0034] Reference Figures 2-4 The interior of the hammer 4 and the exterior of the positioning rod 32 are jointly provided with a moving mechanism 34 that drives the hammer 4 to move upward. The moving mechanism 34 includes a moving tube 341, which is annular in shape and has an outer diameter smaller than the inner diameter of the hammer 4. The inner wall of the moving tube 341 is slidably connected to the outer wall of the positioning rod 32. The moving tube 341 slides up and down relative to the positioning rod 32. The bottom end of the moving tube 341 is provided with a frustum-shaped hollow protrusion, and the shape of the hollow part of the moving tube 341 matches the shape of the positioning rod 32. By setting the frustum shape, it is ensured that when the bottom end of the moving tube 341 moves to the same plane as the top end of the hammer 4, it can force the hammer 4 to move exactly to the concentric position with the moving tube 341 when it moves downward.

[0035] Refer to Figure 2- Figure 4The outer wall of the moving tube 341 is provided with a sliding groove 342. A locking block 343 is slidably connected to the inner wall of the sliding groove 342. The bottom end of the locking block 343 is provided with an inclined chamfer on the side away from the positioning rod 32. By setting the inclined chamfer, it is ensured that the bottom inclined surface of the locking block 343 can move in the direction of entering the sliding groove 342 after being subjected to force. The end of the locking block 343 near the positioning rod 32 is elastically connected to the sliding groove 342 by a spring 344. One end of the spring 344 is fixedly connected to the end of the locking block 343 near the positioning rod 32, and the other end of the spring 344 is fixedly connected to the inner wall of the sliding groove 342. The elastic force of the spring 344 is less than the weight of the moving tube 341. The inner wall of the counterweight 4 is provided with an annular groove 345.

[0036] Reference Figures 2-4 The moving tube 341 is internally provided with a reset component 35, which includes a moving groove 351. The moving groove 351 is located at the top of the moving tube 341, and the bottom end of the moving groove 351 is connected to the sliding groove 342. An insert 352 is slidably connected to the inner wall of the moving groove 351. The sliding direction of the insert 352 relative to the moving groove 351 is up and down. The top of the locking block 343 is provided with an insertion port 353, which is triangular in shape. The bottom end of the insert 352 is provided with an inclined chamfer, and the shape of the chamfer matches the shape of the insertion port 353. By matching the shape and chamfer, it is ensured that when the bottom end of the insert 352 enters the insertion port 353, it can drive the locking block 343 to move.

[0037] Reference Figures 2-4The interior of housing 2 and the exterior of moving tube 341 are jointly provided with an upward moving component 36 that drives moving tube 341 upward. The upward moving component 36 includes a motor 361. The outer wall of motor 361 is fixedly connected to the outer wall of housing 2. The output shaft of motor 361 passes through the inner wall of housing 2 and is fixedly connected to a take-up reel 362. A pull rope 363 is fixedly connected to the outer wall of take-up reel 362. When take-up reel 362 rotates, pull rope 363 can be wound around the outer wall of take-up reel 362. A connecting block 364 is fixedly connected to the outer wall of moving tube 341. The end of pull rope 363 away from take-up reel 362 is fixedly connected to connecting block 364. A direction control block 365 is fixedly connected to the inner wall of the top of housing 2. Pull rope 363 passes through the inner wall of direction control block 365. The direction control block 365 ensures that the direction in which pull rope 363 drives connecting block 364 is upward. Pressure plate 31 A roller 5 is provided at the top of the pressure plate 31, and a spherical groove is provided at the top of the pressure plate 31. The roller 5 is located inside the groove, and the volume of the roller 5 inside the groove is greater than half of its total volume. By setting the roller 5, it is ensured that when the moving tube 341 moves to the area inside the hammer 4, the hammer 4 can be moved relatively easily, and it will not be unable to be pushed because of the large weight of the hammer 4.

[0038] Working principle: When it is necessary to compact the soil in the earthwork foundation pit, the staff first starts the motor 361, so that the output shaft of the motor 361 drives the take-up reel 362 to rotate, so that the take-up reel 362 releases the line during the rotation. At this time, because the take-up reel 362 releases the line, the moving tube 341 is not subjected to upward tension, so it moves downward under the action of gravity.

[0039] When the bottom end of the moving tube 341 moves to the same plane as the top end of the hammer 4, when the moving tube 341 moves downward, the stepped part of the moving tube 341 first enters the internal hole of the hammer 4, and as the moving tube 341 gradually moves downward, the moving tube 341 completely enters the interior of the hammer 4, and the hammer 4 finally moves to a position that is exactly concentric with the moving tube 341.

[0040] Since the bottom surface of the hammer 4 is in contact with the roller 5, the friction generated by the hammer 4 moving in the left and right directions is small, so the moving tube 341 can push the hammer 4.

[0041] During the downward movement of the moving tube 341, the locking block 343 moves synchronously with it. When the bottom surface of the locking block 343 contacts the inner wall of the counterweight 4, it can move towards the sliding groove 342 due to the force on its bottom end. After the locking block 343 moves with the moving tube 341 to a position that is exactly at the same height as the annular groove 345, it moves outward under the elastic force of the spring 344, so that the locking block 343 is inside the annular groove 345.

[0042] Once the locking block 343 is inside the annular groove 345, the operator moves the equipment by starting the moving vehicle 1. Since the positioning rod 32 is inside the counterweight 4 at this time, the counterweight 4 cannot be moved, so there is no possibility of damage to the equipment during the movement.

[0043] Once the device is moved to the appropriate position, the operator restarts the motor 361 and reverses the rotation direction of its output shaft. This causes the take-up reel 362 to rotate in the opposite direction, causing the pull rope 363 to wrap around the outer wall of the take-up reel 362. The pull rope 363 then drives the moving tube 341 upward, and during this upward movement, the counterweight 4 is moved upward via the locking block 343.

[0044] When the locking block 343 moves to the point where the insert 352 contacts the top plate 33, the take-up reel 362 continues to rotate, causing the moving tube 341 to continue moving upward. Since the insert 352 has no room to move, it remains stationary relative to the top plate 33, while the moving tube 341 continues to move relative to the top plate 33. Because the locking block 343 and the moving tube 341 move upward synchronously, the insert 352 moves downward relative to the locking block 343. Therefore, the insert 352 enters the insertion slot 353 and, through the inclined surface of the insertion slot 353, drives the locking block 343 to move in the direction of entering the moving slot 351.

[0045] Since the moving tube 341 slides relative to the positioning rod 32, it can only move up and down along the outer wall of the positioning rod 32. Therefore, it can ensure that multiple inserts 352 are fully inserted into the moving slot 351 at the same time. Since the inside of the counterweight 4 is in contact with the outer wall of the moving tube 341 when it is outside the moving tube 341, the counterweight 4 cannot tilt and fall at this time. It can only move outside the moving tube 341 in the direction of the moving tube 341 after all the locking blocks 343 have left the annular groove 345, and then fall naturally after it is outside the moving tube 341.

[0046] Since the outer diameter of the positioning rod 32 is smaller than the inner diameter of the hammer 4, the hammer 4 will not contact the outer wall of the positioning rod 32 during its descent when there is only a small tilt angle, that is, when the tilt angle is smaller than the angle between the automatic falling path of the hammer 4 and the axial direction of the positioning rod 32.

[0047] Since the hammer 4 falls naturally and the pressure plate 31 is in contact with the ground, when the foundation pit has an inclination, the hammer 4 first contacts the higher part of the inclination position of the pressure plate 31, thus ensuring that the higher part of the pressure plate 31 is subjected to greater force. This ensures that the pressure plate 31 applies greater pressure to the slightly higher part during the compaction process. During the compaction process, since the soil can move in the direction of less pressure after being compacted, it can achieve the effect of natural leveling during the compaction process.

[0048] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A backfilling and compaction machine for earthwork foundation pits, comprising a mobile vehicle (1), characterized in that: The front end of the mobile vehicle (1) is provided with a shell (2), and a compaction device (3) is provided inside the shell (2). The compaction device (3) includes a pressure plate (31), which is fixedly connected to the inner wall of the shell (2) near the bottom. A positioning rod (32) is fixedly connected to the top of the pressure plate (31), and a top plate (33) is fixedly connected to the top of the positioning rod (32). The top of the top plate (33) is fixedly connected to the inner wall of the shell (2). A weight (4) is provided on the outside of the positioning rod (32). A moving mechanism (34) for driving the weight (4) to move upward is provided inside the weight (4) and outside the positioning rod (32). A roller (5) is provided on the top of the pressure plate (31).

2. The earthwork foundation pit backfilling and compaction machine according to claim 1, characterized in that: The moving mechanism (34) includes a moving tube (341), the inner wall of which is slidably connected to the outer wall of the positioning rod (32), a reset component (35) is provided inside the moving tube (341), and an upward moving component (36) that drives the moving tube (341) to move upward is provided inside the housing (2) and outside the moving tube (341). A sliding groove (342) is provided on the outer wall of the moving tube (341), and a locking block (343) is slidably connected to the inner wall of the sliding groove (342). The end of the locking block (343) near the positioning rod (32) is elastically connected to the sliding groove (342) by a spring (344). An annular groove (345) is provided on the inner wall of the counterweight (4).

3. The earthwork foundation pit backfilling and compaction machine according to claim 2, characterized in that: The reset assembly (35) includes a moving groove (351), which is located at the top of the moving tube (341). The bottom of the moving groove (351) is connected to the sliding groove (342). The inner wall of the moving groove (351) is slidably connected with a strip (352). The top of the locking block (343) is provided with a socket (353).

4. The earthwork foundation pit backfilling and compaction machine according to claim 2, characterized in that: The upward moving component (36) includes a motor (361), the outer wall of which is fixedly connected to the outer wall of the housing (2), the output shaft of which passes through the inner wall of the housing (2) and is fixedly connected to a take-up reel (362), the outer wall of which is fixedly connected to a pull rope (363), the outer wall of which is fixedly connected to a connecting block (364), the outer wall of which is fixedly connected to a connecting block (364), the end of which is away from the take-up reel (362) is fixedly connected to the connecting block (364), the inner wall of the top of the housing (2) is fixedly connected to a control block (365), and the pull rope (363) passes through the inner wall of the control block (365).

5. The earthwork foundation pit backfilling and compaction machine according to claim 2, characterized in that: The bottom end of the moving tube (341) is provided with a frustum-shaped hollow protrusion, and the shape of the hollow part of the moving tube (341) matches the shape of the positioning rod (32).

6. The earthwork foundation pit backfilling and compaction machine according to claim 3, characterized in that: The socket (353) is triangular in shape, and the bottom end of the insert (352) is provided with an inclined chamfer, the shape of which matches the shape of the socket (353).

7. The earthwork foundation pit backfilling and compaction machine according to claim 1, characterized in that: The weight (4) is ring-shaped, and the inner diameter of the weight (4) is larger than the outer diameter of the positioning rod (32).

8. The earthwork foundation pit backfilling and compaction machine according to claim 1, characterized in that: The top of the pressure plate (31) is provided with a spherical groove, the roller (5) is disposed inside the groove, and the volume of the roller (5) inside the groove is greater than half of its total volume.

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