Tamping and reinforcing device for geotechnical engineering foundation treatment

Abstract

The tamping and reinforcing device comprises a shell, the lower end of the shell is open, rotating shafts are connected to the left side and the right side of the outer wall of the shell, walking wheels are rotationally connected to the ends of the rotating shafts, a first motor is connected to the top of the shell, and a lead screw is connected to the output end of the top of the first motor; the outer wall of the lead screw is in threaded connection with a nut seat, four L-shaped rods are connected to the outer wall of the nut seat in the circumferential direction, the vertical ends of the four L-shaped rods are jointly connected with a lifting seat, a first round through hole is formed in the center of the lifting seat, a vertical rod is movably inserted into the first round through hole, and the lower end of the vertical rod is connected with a tamping seat. The device is reasonable in structural design, the tamping force is regulated and controlled according to needs for the first time, the overall height of the device is small, the device is convenient to move, and tamping and reinforcing operation of a foundation can be effectively completed in a narrow space where traditional equipment cannot reach.

Description

Technical Field

[0001] The invention relates to the technical field of compaction devices, and in particular to a compaction reinforcement device for geotechnical engineering foundation treatment. Background Art

[0002] In geotechnical engineering, the foundation is an important carrier that supports the safety and stability of the upper buildings. Foundation treatment is a key step to ensure that the foundation can bear the load of the upper buildings and maintain its stability during use. Traditional foundation treatment methods mainly include excavation, compaction and replacement. In the compaction method, a tamping machine is usually used to tamp and compact the filled soil. Ensuring that the soil is fully compacted is the basis for ensuring the long-term safe service of the upper structure, and it is also the most core link of foundation treatment.

[0003] Ensuring that the soil is fully compacted is the basis for ensuring the long-term safe service of superstructures such as airports, roads, and buildings, and is also the most core link in foundation treatment. Currently, there are large-scale mechanical reinforcement and handheld mechanical reinforcement for foundation fill. The latter is mainly suitable for foundation boundaries with high sensitivity requirements and small disturbances. However, existing handheld machines mostly use the centrifugal force generated by the rotation of an eccentric hammer to drive the mechanical equipment to vibrate or impact compaction. The impact compaction stress cannot be adjusted as needed, and the equipment is relatively high, making it difficult to apply to height-restricted areas such as beams, under slabs, and in tunnels.

[0004] Through sufficient research and summary analysis, technical personnel in this field have found that most existing handheld tamping reinforcement equipment uses the method of rotating an eccentric wheel to drive the device to vibrate or jump up, and tamping the foundation by falling with its own weight. Although this type of equipment has a high reinforcement efficiency, it is impossible to adjust the size of the tamping force. If it is not operated properly, it is easy to cause leakage and underpressure. For example, a tamping reinforcement device for geotechnical engineering foundation treatment with application number 202410382427.6, this technical solution increases the tamping strength by setting a spring above the tamping hammer, and offsets the centrifugal force in the horizontal direction by setting a synchronous speed, which can avoid violent swinging of the device during operation and improve stability. However, this technical solution cannot adjust the specific tamping force when in use, resulting in limited applicable scenarios, which is not conducive to promotion and use. In addition, the overall height of the existing tamping reinforcement equipment is relatively large, and it is not applicable to the foundation treatment of height-restricted areas such as under the slabs and beams commonly seen in airports. For this reason, we propose a new tamping reinforcement device for geotechnical engineering foundation treatment. Summary of the invention

[0005] The purpose of the present invention is to provide a tamping reinforcement device for geotechnical engineering foundation treatment to overcome the technical problem in the prior art that the tamping force cannot be adjusted.

[0006] In order to achieve the above technical objectives and the above technical effects, the present invention provides the following technical solutions:

[0007] A tamping reinforcement device for geotechnical engineering foundation treatment comprises a shell, the lower end of the shell is opened, the left and right sides of the outer wall of the shell are connected with a rotating shaft, the end of the rotating shaft is rotatably connected to a walking wheel, the top of the shell is connected to a first motor, the top output end of the first motor is connected to a screw rod, the outer wall of the screw rod is threaded with a nut seat, the outer wall of the nut seat is circumferentially connected with four L-shaped rods, the vertical ends of the four L-shaped rods are commonly connected to a lifting seat, the center of the lifting seat is provided with a circular through hole, a vertical rod is movably inserted in the circular through hole, the lower end of the vertical rod is connected to a tamping seat, and the outer side wall of the shell is connected to a battery.

[0008] Preferably, in a tamping reinforcement device for geotechnical engineering foundation treatment, the top of the lifting seat is connected to a fixed frame, the center of the fixed frame is provided with a second circular through hole, a hollow tube is connected between the first circular through hole and the second circular through hole through a bearing for common rotation, the vertical rod passes through the hollow tube, the upper part of the outer wall of the hollow tube is connected to two symmetrical bevel gear rings, the inner wall of the fixed frame is connected to a second motor, the output end of the second motor is connected to an incomplete bevel gear, the incomplete bevel gear periodically meshes with the bevel gear rings on the upper and lower sides, and the lower part of the outer wall of the hollow tube is connected to a circular rotating disk.

[0009] Preferably, in a tamping reinforcement device for geotechnical engineering foundation treatment, rectangular through grooves are symmetrically opened on the left and right parts of the lifting seat, a horizontal sliding rod is connected in the rectangular through groove, a sliding sleeve is provided on the outer wall of the horizontal sliding rod, a traction rod is hinged on the top of the sliding sleeve and the bottom of the circular rotating disk through a pin shaft, a linkage rod is connected to the lower end of the sliding sleeve, a side bracket is connected to the end of the linkage rod, a wheel axle is rotatably connected to the side of the side bracket close to the tamping seat, a spur gear is connected to the middle of the outer wall of the wheel axle, a worm gear is connected to the front end of the wheel axle, and the two linkage rods are arranged in a central symmetrical structure about the axis of the circular rotating disk.

[0010] Preferably, in a tamping reinforcement device for geotechnical engineering foundation treatment, the outer wall of the side bracket is provided with a worm motor, the output end of the worm motor is connected to a worm, the worm is meshedly connected to a worm wheel, the unfolded helix angle of the worm is smaller than the friction angle of contact between the worm wheel and the worm, and the two rectangular through grooves are connected to one side close to each other with a contact switch, and the contact switch electrically connects the worm motor and the battery.

[0011] Preferably, in a tamping reinforcement device for geotechnical engineering foundation treatment, the top of the vertical rod is connected to a cross plate, a limiting hole is provided at the end of the cross plate, the vertical part of the L-shaped rod passes through the limiting hole, and a tension spring is connected between the cross plate and the lifting seat, and the tension spring is sleeved on the outside of the vertical part of the L-shaped rod.

[0012] Preferably, in a tamping reinforcement device for geotechnical engineering foundation treatment, a accommodating chamber is provided in the tamping seat, the accommodating chamber is filled with a counterweight, a compartment door is installed at the front end of the accommodating chamber, and vertical tooth grooves are provided on the left and right side walls of the tamping seat, and the vertical tooth grooves and the spur gears are located in the same vertical plane.

[0013] Preferably, in a tamping reinforcement device for geotechnical engineering foundation treatment, an inspection door is installed at the front end of the shell, a handrail is connected to the rear end of the shell, a control panel is connected to the handrail, the control panel is electrically connected to the first motor, the second motor and the battery, the inner wall of the shell is symmetrically connected to guide rods, and the lifting seat is provided with guide holes that cooperate with the guide rods.

[0014] Preferably, in a tamping reinforcement device for geotechnical engineering foundation treatment, the outer walls of the traveling wheels on the same side are jointly sleeved with tracks.

[0015] The beneficial effects of the present invention are:

[0016] 1. The structure of the present invention is reasonable and easy to move. After the screw is rotated, the nut seat drives the L-shaped rod to lift vertically, and the height of the lifting seat can be adjusted as needed. The guide rod cooperates with the guide hole to limit the guide, and the lifting is more stable. The overall weight of the tamping seat is adjustable, which is convenient for adjusting the tamping force and moving the device;

[0017] 2. The present invention utilizes incomplete bevel gears to periodically mesh with the bevel gear rings on the upper and lower sides, so that the hollow tube drives the circular turntable to rotate reciprocatingly. After the traction rod is deflected, the inner side of the sliding sleeve moves back and forth along the horizontal sliding rod. When the spur gear is stuck in the vertical tooth groove, the worm meshes and drives the worm wheel. The spur gear meshes and drives the vertical tooth groove. The height of the tamping seat and the vertical rod rises, and the length of the tension spring increases. When the spur gear is disengaged from the vertical tooth groove, the tamping seat impacts downward under the action of its own weight and the elastic potential energy of the tension spring, which can effectively complete the tamping and reinforcement operation of the foundation.

[0018] 3. Compared with the existing equipment, the overall height of the present invention is relatively small, and it is applicable to the narrow spaces with limited height and width commonly found in projects such as airports, subways, and tunnels;

[0019] In summary, the present invention realizes the on-demand regulation of the tamping force for the first time. The overall height of the device is small and the device is easy to move. It can effectively complete the tamping and reinforcement operation of the foundation in a small space that traditional equipment cannot reach. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the description of the specific implementation methods will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the internal structure of the housing in the present invention;

[0023] Figure 3 This is a schematic diagram of the internal structure of the lifting seat in the present invention;

[0024] Figure 4 It is a top view of the structure of the circular turntable in the present invention;

[0025] Figure 5 It is a structural schematic diagram of the cross plate in the present invention;

[0026] Figure 6 It is a structural schematic diagram of the fixing frame in the present invention;

[0027] Figure 7 It is a schematic diagram of the impact stress of tamping on the soil surface according to the present invention.

[0028] In the figure: 1, housing; 2, rotating shaft; 3, walking wheel; 4, first motor; 5, screw rod; 6, nut seat; 7, L-shaped rod; 8, lifting seat; 9, round hole 1; 10, vertical rod; 11, tamping seat; 12, battery; 101, inspection door; 102, handrail; 103, control panel; 104, guide rod; 301, crawler; 701, cross plate; 702, limit hole; 703, tension spring; 801, fixing frame; 802, round hole 2; 803, hollow tube ; 804, bevel gear ring; 805, second motor; 806, incomplete bevel gear; 807, circular turntable; 811, rectangular through groove; 812, horizontal slide bar; 813, sleeve; 814, traction rod; 815, linkage rod; 816, side bracket; 817, axle; 818, spur gear; 819, worm gear; 861, worm motor; 862, worm; 863, contact switch; 111, accommodating chamber; 112, counterweight; 113, warehouse door; 114, vertical tooth groove. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Embodiment 1

[0031] See also Figure 1-6As shown, this embodiment is a tamping reinforcement device for geotechnical engineering foundation treatment, comprising a shell 1, the lower end of the shell 1 is opened, the left and right sides of the outer wall of the shell 1 are connected with a rotating shaft 2, the end of the rotating shaft 2 is rotatably connected with a walking wheel 3, the top of the shell 1 is connected with a first motor 4, the top output end of the first motor 4 is connected with a screw rod 5, the outer wall of the screw rod 5 is screwed with a nut seat 6, the outer wall of the nut seat 6 is circumferentially connected with four L-shaped rods 7, the vertical ends of the four L-shaped rods 7 are commonly connected with a lifting seat 8, the center of the lifting seat 8 is provided with a circular through hole 9, a vertical rod 10 is movably inserted in the circular through hole 9, the lower end of the vertical rod 10 is connected with a tamping seat 11, and the outer side wall of the shell 1 is connected with a battery 12.

[0032] The tamping seat 11 has a receiving chamber 111 therein, the receiving chamber 111 is filled with a counterweight 112, a door 113 is installed at the front end of the receiving chamber 111, and vertical tooth grooves 114 are formed on the left and right side walls of the tamping seat 11, and the vertical tooth grooves 114 and the spur gear 818 are located in the same vertical plane.

[0033] An inspection door 101 is installed at the front end of the shell 1, and a handrail frame 102 is connected to the rear end of the shell 1. A control panel 103 is connected to the handrail frame 102. The control panel 103 is electrically connected to the first motor 4, the second motor 805 and the battery 12. The inner wall of the shell 1 is symmetrically connected to a guide rod 104, and a guide hole matching the guide rod 104 is opened on the lifting seat 8.

[0034] The outer walls of the running wheels 3 on the same side are jointly sleeved with a crawler track 301 .

[0035] The specific implementation of the present invention is:

[0036] When the device is in use, the shell 1 can be moved to the geotechnical engineering foundation treatment area through the handrail frame 102 and the walking wheel 3. The crawler 301 is installed on the outside of the walking wheel 3, which is more convenient to move. The first motor 4 drives the screw rod 3 to rotate, and the nut seat 6 drives the L-shaped rod 7 to rise and fall vertically, so that the height of the lifting seat 8 can be adjusted. The guide rod 104 is used in conjunction with the guide hole limit guide to make the lifting of the lifting seat 8 more stable. The vertical rod 10 is used to drive the tamping seat 11 to move. When the tamping seat 11 moves down, the foundation can be tamped and fixed. After opening the warehouse door 113, the counterweight block 112 can be filled into the accommodating chamber 111, which can change the overall weight of the tamping seat 11, so as to facilitate the adjustment of the tamping force.

[0037] Embodiment 2

[0038] On the basis of the first embodiment, the top of the lifting seat 8 is connected to a fixing frame 801, and a round through hole 2 802 is opened in the center of the fixing frame 801. A hollow tube 803 is connected between the round through hole 1 9 and the round through hole 2 802 for common rotation through a bearing. The vertical rod 10 passes through the hollow tube 803. Two symmetrical bevel gear rings 804 are connected to the upper part of the outer wall of the hollow tube 803. The inner wall of the fixing frame 801 is connected to a second motor 805. The output end of the second motor 805 is connected to an incomplete bevel gear 806. The incomplete bevel gear 806 periodically meshes with the bevel gear rings 804 on the upper and lower sides. The lower part of the outer wall of the hollow tube 803 is connected to a circular rotating disk 807.

[0039] The left and right parts of the lifting seat 8 are symmetrically provided with rectangular through grooves 811, and a horizontal sliding rod 812 is connected in the rectangular through groove 811. A sliding sleeve 813 is movably sleeved on the outer wall of the horizontal sliding rod 812. A traction rod 814 is hinged between the top of the sliding sleeve 813 and the bottom of the circular rotating disk 807 through a pin shaft. The lower end of the sliding sleeve 813 is connected with a linkage rod 815, and the end of the linkage rod 815 is connected with a side bracket 816. The side bracket 816 is rotatably connected with a wheel axle 817 on the side close to the tamping seat 11. A spur gear 818 is connected to the middle of the outer wall of the wheel axle 817, and a worm gear 819 is connected to the front end of the wheel axle 817. The two linkage rods 815 are arranged in a centrally symmetrical structure about the axis of the circular rotating disk 807.

[0040] The outer wall of the side bracket 816 has a worm motor 861, and the output end of the worm motor 861 is connected to a worm 862, and the worm 862 is meshed with a worm wheel 819. The unfolded helix angle of the worm 862 is smaller than the friction angle of the worm wheel 819 and the worm 862 in contact with each other. The two rectangular through grooves 811 are each connected to a contact switch 863 on one side, and the contact switch 863 electrically connects the worm motor 861 and the battery 12.

[0041] A cross plate 701 is connected to the top of the vertical rod 10, and a limiting hole 702 is opened at the end of the cross plate 701. The vertical part of the L-shaped rod 7 passes through the limiting hole 702. A tension spring 703 is connected between the cross plate 701 and the lifting seat 8, and the tension spring 703 is sleeved on the outside of the vertical part of the L-shaped rod 7.

[0042] The specific implementation of the present invention is:

[0043] In this embodiment, after the device is moved to the working area, the height of the lifting seat 8 is adjusted, and the second motor 805 is used to drive the incomplete bevel gear 806 to rotate. The incomplete bevel gear 806 periodically meshes with the bevel gear rings 804 on the upper and lower sides, so that the hollow tube 803 drives the circular rotating disk 807 to reciprocate. One end of the traction rod 814 rotates with the circular rotating disk 807, and the other end pushes and pulls the sliding sleeve 813. The sliding sleeve 813 moves along the horizontal sliding rod 812 in the rectangular through groove 811. When the sliding sleeve 813 abuts the contact switch 863, the spur gear 818 is stuck in the vertical tooth groove 114, and the worm motor 861 drives The movable worm 862 rotates, and the worm 862 engages with the transmission worm wheel 819, so that the wheel shaft 817 drives the spur gear 818 to rotate, and the spur gear 818 engages with the transmission vertical tooth groove 114, so that the height of the tamping seat 11 rises, the cross plate 701 moves up along the L-shaped rod 7, and the length of the tension spring 703 increases. As the sliding sleeve 813 moves to disengage from the contact switch 863, the linkage rod 815 drives the side bracket 816 to move, and the spur gear 818 disengages from the vertical tooth groove 114. The tamping seat 11 impacts downward under the action of its own weight and the elastic potential energy of the tension spring 703, and can complete the tamping and reinforcement operation of the foundation.

[0044] Embodiment 3

[0045] In order to verify the applicability of the present invention, a field test was carried out based on the foundation treatment project of the airport terminal under construction. First, a 30 cm thick loose soil filler was laid as the foundation to be reinforced, with a length of 3 meters and a width of 1 meter. We recorded the specific data of the impact force of the tamping reinforcement device on the soil, and tamped it 20 times in total. The specific tamping stress is as follows Figure 7 As shown, the horizontal axis is time, the vertical axis is the impact stress of the rammer on the soil surface, and DC-1 refers to the first ramming.

[0046] The temporal and spatial distribution of a single tamping event was analyzed, and the tamping process was described: the tamping hammer was first raised to a specified height, and then it was free-fallen by unhooking to produce an impact on the foundation soil. After the impact came into contact with the soil, it first increased, then decreased, and finally tended to zero over time ( Figure 7 ), indicating that the impact of the rammer on the soil is similar to a pulse load, which in turn causes the soil to compact and ultimately produces a reinforcement effect. Among them, the impact stress is the core of the soil compaction reinforcement effect and determines the final reinforcement effect.

[0047] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0048] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A tamping reinforcement device for geotechnical engineering foundation treatment, comprising a housing (1), characterized in that: The lower end of the shell (1) is open, and the left and right sides of the outer wall of the shell (1) are connected to a rotating shaft (2), and the end of the rotating shaft (2) is rotatably connected to a walking wheel (3). The top of the shell (1) is connected to a first motor (4), and the top output end of the first motor (4) is connected to a screw rod (5). The outer wall of the screw rod (5) is screwed with a nut seat (6), and the outer wall of the nut seat (6) is circumferentially connected with four L-shaped rods (7), and the vertical ends of the four L-shaped rods (7) are commonly connected to a lifting seat (8). The center of the lifting seat (8) is provided with a circular through hole (9), and a vertical rod (10) is movably inserted in the circular through hole (9), and the lower end of the vertical rod (10) is connected to a tamping seat (11), and the outer wall of the shell (1) is connected to a battery (12).

2. The tamping reinforcement device for geotechnical engineering foundation treatment according to claim 1, characterized in that: The top of the lifting seat (8) is connected to a fixing frame (801), and a second round through hole (802) is provided at the center of the fixing frame (801). A hollow tube (803) is connected between the first round through hole (9) and the second round through hole (802) for common rotation via a bearing. The vertical rod (10) passes through the hollow tube (803). Two symmetrical bevel gear rings (804) are connected to the upper part of the outer wall of the hollow tube (803). The inner wall of the fixing frame (801) is connected to a second motor (805), and an output end of the second motor (805) is connected to an incomplete bevel gear (806). The incomplete bevel gear (806) periodically meshes with the bevel gear rings (804) on the upper and lower sides. The lower part of the outer wall of the hollow tube (803) is connected to a circular rotating disk (807).

3. The tamping reinforcement device for geotechnical engineering foundation treatment according to claim 2, characterized in that: The left and right parts of the lifting seat (8) are symmetrically provided with rectangular through grooves (811), a horizontal sliding rod (812) is connected in the rectangular through groove (811), a sliding sleeve (813) is movably sleeved on the outer wall of the horizontal sliding rod (812), a traction rod (814) is hingedly connected between the top of the sliding sleeve (813) and the bottom of the circular rotating disk (807) through a pin shaft, a linkage rod (815) is connected at the lower end of the sliding sleeve (813), a side bracket (816) is connected at the end of the linkage rod (815), a wheel shaft (817) is rotatably connected at one side of the side bracket (816) close to the tamping seat (11), a spur gear (818) is connected in the middle of the outer wall of the wheel shaft (817), a worm gear (819) is connected at the front end of the wheel shaft (817), and the two linkage rods (815) are centrally symmetrically arranged about the axis of the circular rotating disk (807).

4. The tamping reinforcement device for geotechnical engineering foundation treatment according to claim 3, characterized in that: The outer wall of the side bracket (816) is provided with a worm motor (861), the output end of the worm motor (861) is connected to a worm (862), the worm (862) is meshedly connected to a worm wheel (819), the unfolded helix angle of the worm (862) is smaller than the friction angle of the worm wheel (819) and the worm (862) in contact, and the two rectangular through slots (811) are connected to a contact switch (863) on one side thereof, and the contact switch (863) electrically connects the worm motor (861) and the storage battery (12).

5. The tamping reinforcement device for geotechnical engineering foundation treatment according to claim 1, characterized in that: The top of the vertical rod (10) is connected to a cross plate (701), a limiting hole (702) is provided at the end of the cross plate (701), the vertical portion of the L-shaped rod (7) passes through the limiting hole (702), a tension spring (703) is connected between the cross plate (701) and the lifting seat (8), and the tension spring (703) is sleeved on the outer side of the vertical portion of the L-shaped rod (7).

6. The tamping reinforcement device for geotechnical engineering foundation treatment according to claim 3, characterized in that: The tamping seat (11) is provided with a receiving chamber (111), the receiving chamber (111) is filled with a counterweight (112), a door (113) is installed at the front end of the receiving chamber (111), and vertical tooth grooves (114) are provided on the left and right side walls of the tamping seat (11), and the vertical tooth grooves (114) and the spur gear (818) are located in the same vertical plane.

7. The tamping reinforcement device for geotechnical engineering foundation treatment according to claim 2, characterized in that: The front end of the shell (1) is provided with an inspection door (101), the rear end of the shell (1) is connected with a handrail frame (102), the handrail frame (102) is connected with a control panel (103), the control panel (103) is electrically connected with a first motor (4), a second motor (805) and a battery (12), the inner wall of the shell (1) is symmetrically connected with a guide rod (104), and the lifting seat (8) is provided with a guide hole matched with the guide rod (104).

8. The tamping reinforcement device for geotechnical engineering foundation treatment according to claim 1, characterized in that: The outer walls of the running wheels (3) on the same side are jointly sleeved with a crawler track (301).

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