A soil cleaning machine for Larsen steel sheet pile groove and its use method

Abstract

The invention discloses a soil cleaning machine for a Larsen steel sheet pile groove and a method for using the same. The machine comprises a vehicle frame, an electric hoist and a vibrating scraper. The vehicle frame comprises a chassis frame, an upper frame rotatably arranged on the chassis frame through a turntable, a wheel is arranged at the lower part of the chassis frame, the electric hoist is arranged on the upper frame, the vibrating scraper comprises a wedge-shaped steel shell, an exciter, a wedge nail, an electromagnet and a limiting wheel, the steel shell is a hollow structure, the front end blade corner part of the steel shell is a solid block structure, the exciter and the electromagnet are both arranged in the cavity of the steel shell, the exciter is fixed on the bottom plate of the steel shell, the wedge nail is telescopically arranged at the blade corner part of the steel shell and is perpendicular to the blade corner panel, there are four electromagnets, which are respectively arranged at the four corners of the inner side of the bottom plate of the steel shell, a plurality of limiting wheels are respectively arranged on the outside of the bottom plate of the steel shell and the outside of both sides, the tail end of the vibrating scraper is connected to the steel wire rope of the electric hoist and is suspended below the upper frame through a slide rail and a pulley system.

Description

Technical Field

[0001] The present invention relates to a soil cleaning machine for Larsen steel sheet pile grooves, which is a device for cleaning residual soil in a U-shaped groove of a Larsen steel sheet pile, and belongs to the technical field of civil engineering construction equipment. The present invention also relates to a method for using the soil cleaning machine for Larsen steel sheet pile grooves. Background Art

[0002] Larsen steel sheet piles, also known as U-shaped steel sheet piles, are used as a vertical retaining structure in bridge cofferdam construction, large pipeline laying, and temporary ditch excavation to retain soil and water. Larsen steel sheet piles are not only green and environmentally friendly for foundation pit or trench support, but also have fast construction speed, high reuse rate of steel sheet piles, low construction cost, and high efficiency. They are currently widely used in various projects.

[0003] Larsen SP-IV steel sheet piles are the most widely used in China. As a temporary support structure for foundation pits, steel sheet piles are inserted vertically into the soil through piling equipment, and the adjacent steel sheet piles on the left and right are interlocked. Since the U-shaped groove of the steel sheet pile has an opening width of about 35cm and a groove depth of 17cm, the soil in the U-shaped groove of the steel sheet pile cannot be removed by an excavator when excavating the foundation pit or trench.

[0004] At present, the residual soil in the groove of steel sheet piles is usually cleaned by workers standing at the edge or bottom of the foundation pit using shovels, spades or homemade simple tools. The depth of the foundation pit or trench is generally between 3m and 10m. Workers standing at the edge or inside the foundation pit to carry out high-intensity construction work is not only very inefficient, but also has huge safety hazards and is prone to casualties. Summary of the invention

[0005] In view of the above-mentioned defects existing in the prior art, the present invention provides a Larsen steel sheet pile groove soil cleaning machine which has high construction efficiency and can effectively clean the residual soil in the U-shaped groove of the Larsen steel sheet pile.

[0006] The present invention is realized through the following technical scheme: a soil cleaning machine for Larsen steel sheet pile groove, characterized in that it includes a vehicle frame, an electric hoist lifting mechanism, and a vibrating scraper, the vehicle frame includes a chassis frame, an upper disk frame, and a turntable, the upper disk frame is rotatably arranged on the chassis frame through the turntable, the lower part of the chassis frame is provided with wheels, the rear part of the vehicle frame is provided with handrails, the electric hoist lifting mechanism is arranged on the upper disk frame, the electric hoist lifting mechanism includes an electric hoist, the vibrating scraper includes a wedge-shaped steel shell, an exciter, a wedge nail, an electromagnet, and a limiting wheel, the cross section of the steel shell is consistent with the cross section shape of the groove of the Larsen steel sheet pile, and the steel shell The shell is a hollow structure, and the front end corner part of the steel shell is a solid block structure. The exciter and the electromagnet are both arranged in the cavity of the steel shell. The exciter is fixed on the bottom plate of the steel shell. The wedge nail is telescopically arranged at the corner part of the steel shell and perpendicular to the corner panel. There are four electromagnets, which are respectively arranged at the four corners of the inner side of the bottom plate of the steel shell. A plurality of limiting wheels are respectively arranged on the outside of the bottom plate and the outside of both sides of the steel shell. A slide rail and pulley system are arranged at the front end of the upper disc frame. The tail end of the vibrating scraper is connected to the wire rope of the electric hoist and is suspended below the upper disc frame through the slide rail and pulley system.

[0007] In the present invention, the cleaning machine can travel by means of wheels arranged at the lower part of the chassis frame, and the travel direction of the cleaning machine can be controlled by means of handrails arranged at the rear part of the chassis frame. The upper chassis frame can be manually pushed to rotate in a horizontal plane through a turntable, thereby driving the vibrating scraper to rotate to a working position. The vibrating scraper in the present invention can be attached to the Larsen steel sheet pile by means of the adsorption principle of an electromagnet, so that the scraper can move along the groove of the steel sheet pile in a vertical direction without falling off, and the vibrating scraper is limited in the groove of the Larsen steel sheet pile by means of a limiting wheel, so that the vibrating scraper moves in a vertical direction along the groove of the Larsen steel sheet pile. The blade angle of the vibrating scraper can cut into the gap between the soil and the steel sheet pile by its own weight, thereby accelerating the separation of the soil and the steel sheet pile. The vibrator installed in the vibrating scraper can make the vibrating scraper generate high-frequency vibration, and the residual soil attached to the groove of the steel sheet pile is separated from the steel sheet pile by high-frequency vibration. The retractable wedge nail can not only split the soil body through reciprocating motion, but also further support the broken soil blocks to fall. The electric hoist lifting mechanism is used to lift the vibrating scraper upward and assist the vibrating scraper to be lowered into place. When the present invention is used, the residual soil in the groove of the steel sheet pile can be cleaned from the top of the pile to the bottom of the foundation pit at one time.

[0008] Furthermore, the electric hoist is fixed to the rear lower part of the upper frame. The electric hoist is fixed to the rear lower part of the upper frame, which can effectively balance and lower the center of gravity of the frame and prevent the frame from tipping over during construction.

[0009] Furthermore, in order to facilitate the splitting of the soil and accelerate the separation of the soil, the wedge nails are arranged in a plurality of intervals, and the wedge nails are arranged in a row transversely along the blade angle panel of the steel shell. When the wedge nails are extended, the wedge nails arranged in a row can split a horizontal crack in the soil and can support the soil outward, which can accelerate the separation and falling of the soil.

[0010] Furthermore, in order to facilitate maintenance of the vibrator, electromagnet, etc. in the steel shell, a detachable top cover plate is provided on the top of the steel shell.

[0011] Furthermore, in order to facilitate walking, a lithium battery power source is used as a driving force.

[0012] Furthermore, a cam push rod mechanism is arranged in the steel housing, and the cam push rod mechanism is connected to the wedge pin. The cam push rod mechanism can push the wedge pin to reciprocate and extend.

[0013] Furthermore, in order to facilitate the splitting of the soil, the head end of the wedge nail is a blunt cone structure, and its expansion and contraction frequency is 10 to 20 times per minute.

[0014] The present invention also provides a method for using the above-mentioned Larsen steel sheet pile groove soil cleaning machine, which comprises the following steps:

[0015] (1) Move the cleaning machine to the working position near the Larsen steel sheet pile at the edge of the trench, and preliminarily adjust the distance between the cleaning machine frame and the steel sheet pile so that the frame is 10 to 15 cm away from the steel sheet pile. Keep the machine body stationary, and rotate the upper frame 90 degrees so that the vibrating scraper faces the working surface;

[0016] (2) The vibrating scraper is horizontally moved outward along the slide rail of the slide rail and pulley system so that the vibrating scraper is located directly above the groove of the Larsen steel sheet pile;

[0017] (3) Start the electric hoist to move the vibrating scraper down along the groove of the Larsen steel sheet pile to the working position, and the front edge of the vibrating scraper presses against the residual soil in the groove of the steel sheet pile;

[0018] (4) Activate the electromagnet in the vibrating scraper to make the vibrating scraper adsorb on the Larsen steel sheet pile;

[0019] (5) Turn off the electric hoist and put it in a no-load state;

[0020] (6) The vibrator and wedge of the vibrating scraper are started, and the vibrating scraper starts to work; the vibrating scraper is attached to the Larsen steel sheet pile and vibrates at a high frequency, so that the residual soil in the groove of the Larsen steel sheet pile is separated from the Larsen steel sheet pile, and the front blade of the vibrating scraper is inserted into the gap between the soil and the Larsen steel sheet pile, and the soil is further split by its own weight, and the wedge located on the blade is inserted and cut off to gradually complete the cleaning of the residual soil, and clean up to the bottom of the foundation pit;

[0021] (7) Turn off the vibrator and wedge of the vibrating scraper, turn off the electromagnet, and turn on the electric hoist to lift the vibrating scraper to a fixed position on the frame;

[0022] (8) Turn off the electric hoist, fix the vibrating scraper, move the cleaner to the next work station, and repeat the above operation process.

[0023] The beneficial effects of the present invention are:

[0024] 1. The cleaning machine of the present invention fully realizes mechanized operation, is easy to operate, has high construction efficiency, reduces the labor intensity of workers, and allows workers to stay away from the edge of the foundation pit, thus realizing safe operation.

[0025] 2. The technical principle of the present invention is to use a high-frequency vibrating scraper to remove residual soil in the groove of the steel sheet pile. Since the scraper is suspended on a frame located on the ground by a steel wire rope, the requirement for the flatness of the ground is not high, the positioning is fast, and the adaptability is wide. The present invention adopts a turntable design, and the upper mechanism can rotate in a horizontal plane, so that the moving direction of the vehicle body and the working surface of the scraper do not conflict with each other, and there is no need to repeatedly adjust the orientation of the vehicle body.

[0026] 3. The invention has a high degree of mechanical automation, flexible and simple operation, and can greatly reduce labor intensity. The invention upgrades traditional manual work to mechanized and automated work, which can be operated by 1 to 2 workers. For soils with different humidity and properties, the soil can be effectively loosened by adjusting the excitation frequency of the vibrating scraper to ensure construction efficiency.

[0027] 4. The present invention has high working efficiency and saves costs. According to calculations, under different soil conditions, a worker can clean 60 to 120 m of soil in the steel sheet pile groove in 8 hours, while the cleaning machine of the present invention can complete 300 to 600 m, which improves the work efficiency several times. In addition, the deeper the foundation pit, the fewer times the equipment is installed, disassembled and moved, and the more significant the efficiency advantage. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the soil cleaning machine for Larsen steel sheet pile groove of the present invention;

[0029] Figure 2 It is a plane position diagram of the working state of the soil cleaning machine in the Larsen steel sheet pile groove of the present invention;

[0030] Figure 3 It is a vertical view of the working state of the soil cleaning machine in the steel sheet pile groove of the present invention;

[0031] Figure 4 It is a plan view of the working state of the soil cleaning machine in the steel sheet pile groove of the present invention;

[0032] Figure 5It is a structural schematic diagram of the cam push rod mechanism in the present invention;

[0033] Figure 6 This is a cross-sectional view of a Larsen steel sheet pile;

[0034] In the figure, 1, frame; 1-1, wheels; 1-2, chassis frame; 1-3, turntable; 1-4, upper plate frame; 1-5, handrail; 2, electric hoist; 3, vibrating scraper; 3-1, wedge-shaped steel shell; 3-2, exciter; 3-3, wedge nail; 3-4, electromagnet; 3-5, limit wheel; 3-6, controller; 3-7, top cover plate; 4, lithium battery power supply; 5, slide rail and pulley system; 6, winding drum; 7, wire rope; 8, cable; 9, steel sheet pile; 10, ground; 11, cam; 12, push rod. DETAILED DESCRIPTION

[0035] The present invention will be further described below by way of non-limiting embodiments and in conjunction with the accompanying drawings:

[0036] As shown in the attached drawings, a soil cleaning machine for a Larsen steel sheet pile trench comprises a frame 1, an electric hoist lifting mechanism, a vibrating scraper 3, and a remote control operating system.

[0037] The overall dimensions of the cleaning machine are designed to be 70cm long, 60cm wide and 90cm high. This is mainly because the top surface of the trench and foundation pit steel sheet piles is usually 30cm above the ground. In actual construction, affected by site conditions and construction errors, the height of the steel sheet piles above the ground is within the range of 10cm to 50cm. The total height of the equipment is 90cm, which can meet the construction needs.

[0038] The frame 1 includes a chassis frame 1-2, an upper frame 1-4, and a turntable 1-3. The frame 1 adopts a steel pipe frame, and the steel pipe frame of the frame uses a structural seamless steel pipe that meets the requirements of GB / T8162. According to the different forces of the various components of the frame, round tubes and square tubes with a diameter of Φ20mm to 40mm are selected, and each steel tube component is connected by welding. The chassis frame 1-2 is welded into a plane frame structure using a 40*40*3.5mm square tube to ensure that the chassis frame 1-2 is stable and does not deform. A turntable 1-3 is set at the center of the frame, and the upper frame 1-2 is rotatably set on the chassis frame 1-2 through the turntable 1-3. The function of the turntable 1-3 is to connect the chassis frame 1-2 and the upper frame 1-4, and to enable the upper frame 1-4 to rotate freely in a horizontal plane with the center of the turntable 1-3 as the axis. The rotation of the upper disc frame 1-4 is implemented manually. The upper disc frame 1-4 can be fixed by a slot and a buckle. Each time it rotates horizontally 90 degrees, it will automatically snap into the slot and be fixed by the buckle. After opening the buckle, it can continue to rotate 90 degrees. The lower part of the chassis frame 1-2 is provided with four wheels 1-1. The movement of this cleaning machine adopts electric drive, the front wheel is the driving wheel, and the rear wheel is the steering wheel. This cleaning machine uses a lithium battery as a driving power source, and the speed of the cleaning machine is controlled within 5km / h by a speed change gear. Due to the slow travel speed of the cleaning machine, vehicles can be used for long-distance off-site transfer. In order to better adapt to the complex working environment of the construction site, the wheel 1-1 adopts a large-diameter wide-body anti-slip rubber wheel design, and the wheel diameter is not less than 30cm. The lithium battery power supply 4 and the travel drive motor are both installed on the chassis frame 1-2. The rear part of the frame 1 is provided with a handrail 1-5. For the convenience of steering, a steering device can be provided between the handrail 1-5 and the wheel 1-1 (rear wheel). The direction of travel of the vehicle body can be adjusted by swinging the handrail 1-5 left and right. The steering device can adopt the existing technology. The start and stop button of the vehicle body and the speed adjustment operation button are both provided on the handrail 1-5.

[0039] A slide rail and pulley system 5 is provided at the front end of the upper rack 1-4.

[0040] The frame 1 of the cleaning machine adopts a design of upper and lower plates separated, mainly considering that the vehicle body moves along the edge of the groove or foundation pit. From the plane orientation relationship, it can be seen that the working surface of the scraper is located on the left and right sides of the vehicle body. In order to speed up the positioning speed of the scraper and avoid repeated adjustment of the direction of the vehicle body, the vehicle body is designed to be separated from the upper and lower plates. The main function of the lower plate and its auxiliary modules is to provide stable support and move the equipment, and the main function of the upper plate and its auxiliary modules is to clean the soil in the groove.

[0041] The electric hoist lifting mechanism is arranged on the upper disc frame 1-4, and the electric hoist lifting mechanism includes an electric hoist 2. The function of the electric hoist lifting mechanism is to lift the vibrating scraper 3 upwards, and at the same time assist the vibrating scraper 3 to be lowered into place. The electric hoist 2 is fixed to the lower part of the frame 1 close to the handrail 1-5, which can effectively balance and lower the center of gravity of the frame to prevent the frame from overturning during construction. For lightweight design, the electric hoist 2 uses an adjustable speed small winch with a power of 550W and a rated load of 200KG~500KG. The static load safety factor is more than 8 times, which can fully meet the requirements of load, stroke and safety reserve.

[0042] The vibrating scraper 3 is the core component of the cleaning machine. The vibrating scraper 3 includes a wedge-shaped steel shell 3-1, an exciter 3-2, a wedge nail 3-3, an electromagnet 3-4, a limit wheel 3-5, and a controller 3-6. The cross-section of the steel shell 3-1 is consistent with the cross-sectional shape of the groove of the Larsen steel sheet pile, and the cross-sectional size is 6 to 12 mm smaller than the groove of the steel sheet pile, with a length of 35 to 40 cm and a thickness of 18 to 20 cm. The steel shell 3-1 is welded with steel plates, and the thickness of the steel plate of the steel shell 3-1 is 5 to 6 mm. The total weight of the vibrating scraper 3 is about 20 kg, ensuring that the scraper has enough deadweight to cut the soil. The steel shell 3-1 is a hollow structure, and the front edge corner of the steel shell 3-1 is a solid block structure to increase the splitting ability of the scraper. The exciter 3-2, the electromagnet 3-4, and the controller 3-6 are all arranged in the cavity of the steel shell 3-1. A removable top cover plate 3-7 is provided on the upper part of the steel shell 3-1 to facilitate maintenance of the internal devices such as the vibrator, electromagnet, controller, etc. on the inner wall.

[0043] The vibrator 3-2 is fixed on the bottom plate of the steel shell 3-1 and is powered by 380V AC. The vibrator 3-2 is a prior art. The vibrator principle is that an eccentric vibration system is installed inside. Driven by an electric motor, it rotates at high speed to generate unbalanced centrifugal force, which drives the scraper to perform high-frequency and slight reciprocating vibration. The vibration frequency and amplitude can be adjusted by a remote control device. The function of the vibrator 3-2 is to drive the scraper to perform high-frequency and slight reciprocating vibration to separate the steel sheet pile from the residual soil in the groove, so that the blade angle of the scraper can cut into the gap between the steel sheet pile and the soil.

[0044] The wedge nail 3-3 is arranged at the blade corner of the steel shell 3-1 and is perpendicular to the blade corner panel. Preferably, the wedge nail 3-3 is arranged in a plurality of intervals, and the wedge nails 3-3 are arranged in a row horizontally along the blade corner panel of the steel shell 3-1. In the present embodiment, preferably, a total of 4 wedge nails 3-3 are arranged at equal intervals. The wedge nail 3-3 is a retractable design with a retractable frequency of 10 to 20 times per minute, and the 4 wedge nails are retracted synchronously. The shape of the wedge nail 3-3 is a blunt-headed cone with a cross-sectional diameter of 2 cm and a maximum exposed length of 3 cm. The functions of the wedge nail 3-3 are, first, to split the soil and split a horizontal crack in the soil, and second, to support the soil outward to accelerate the separation and falling of the soil. The extension and retraction of the wedge nail 3-3 can be driven by any structural form in the prior art. In the present embodiment, the wedge nail 3-3 is reciprocated by a cam push rod mechanism arranged in the steel shell 3-1. The cam push rod mechanism is an existing technology, which drives the cam to rotate through the motor, drives the push rod to reciprocate through the cam, and all the wedge nails 3-3 are connected to the push rod of the cam push rod mechanism through a connecting piece, and the push rod drives all the wedge nails to reciprocate and extend synchronously. The power supply of the cam push rod mechanism adopts the alternating current at the construction site.

[0045] There are four electromagnets 3-4, which are respectively arranged at the four corners of the inner side of the bottom plate of the steel shell 3-1. Their function is to make the vibrating scraper 3 close to the steel sheet pile to prevent the scraper from falling out of the groove of the steel sheet pile or falling. The suction cup of the electromagnet 3-4 does not directly contact the steel sheet pile, but maintains a certain gap with the steel sheet pile. The model of the electromagnet 3-4 is selected according to the test to ensure that the scraper will not fall off due to too small adsorption force, nor will the travel resistance of the scraper increase due to too large adsorption force. The opening and closing of the electromagnet can be controlled by remote control.

[0046] A plurality of limiting wheels 3-5 are respectively arranged on the outside of the bottom plate and the outside of both sides of the steel shell 3-1. The limiting wheels 3-5 are designed as rollers. The functions are: first, to prevent the vibrating scraper from completely sticking to the steel sheet pile, to keep a gap of 3 to 5 mm between the vibrating scraper and the steel sheet pile, to prevent the vibrating scraper from being stuck due to deformation of the steel sheet pile, or to prevent the vibrating scraper from being difficult to move due to excessive adsorption magnetic force; second, to have a positioning and guiding function, to keep the vibrating scraper always running along the axis of the groove of the steel sheet pile.

[0047] The controller 3-6 is located in the steel housing 3-1 of the vibrating scraper and is used in conjunction with the remote control handle to adjust the working state of the vibrator 3-2 and the electromagnet 3-4 to achieve optimal working efficiency. The controller 3-6 is a prior art.

[0048] When the vibrating scraper 3 is working, the blade angle is downward and the tail end is upward. A hanging hole is set at the tail end, and the wire rope 7 passes through the pulley of the slide rail and pulley system 5 and is connected to the electric hoist 2. The vibrating scraper 3 is suspended below the upper disk frame 1-4. The driving cable of the vibrating scraper 3 is also connected from the tail end and connected to the winding drum 6 of the frame 1 through the pulley of the slide rail and pulley system 5.

[0049] The function of the remote control operating system is to control the start and stop of the vibrating scraper according to the construction operation steps, adjust the vibration frequency and amplitude of the vibrator, and turn on and off the electromagnet, which is the existing technology.

[0050] The method of using the Larsen steel sheet pile trench soil cleaning machine includes the following steps:

[0051] (1) Move the cleaning machine to the working position near the Larsen steel sheet pile at the edge of the trench, preliminarily adjust the distance between the cleaning machine frame and the steel sheet pile so that the frame is 10 to 15 cm away from the steel sheet pile, keep the machine body stationary, rotate the upper frame 1-4 90 degrees, and make the vibrating scraper 3 face the working surface;

[0052] (2) The vibrating scraper 3 is horizontally moved outward along the slide rail of the slide rail and pulley system 5 so that the vibrating scraper 3 is located directly above the groove of the Larsen steel sheet pile;

[0053] (3) Start the electric hoist 2 to move the vibrating scraper 3 down along the groove of the Larsen steel sheet pile to the working position, and the front edge of the vibrating scraper 3 bears against the residual soil in the groove of the steel sheet pile;

[0054] (4) activating the electromagnet 3-4 in the vibrating scraper 3 through the remote control system, so that the vibrating scraper 3 is adsorbed on the Larsen steel sheet pile;

[0055] (5) Turn off the electric hoist 2 to put it in a no-load state;

[0056] (6) The vibrator 3-2 and the wedge 3-3 of the vibrating scraper 3 are started through the remote control system, and the vibrating scraper 3 starts to work; the vibrating scraper 3 is attached to the Larsen steel sheet pile and vibrates at a high frequency, so that the residual soil in the groove of the Larsen steel sheet pile is separated from the Larsen steel sheet pile, and the front edge of the vibrating scraper 3 is inserted into the gap between the soil and the Larsen steel sheet pile, and the soil is further split by its own weight, and the wedge 3-3 located on the edge is inserted and cuts off the soil, and the residual soil is gradually cleaned up until the bottom of the foundation pit;

[0057] (7) Turn off the vibrator 3-2 and the wedge 3-3 of the vibrating scraper through the remote control system, turn off the electromagnet 3-4, and turn on the electric hoist 2 to lift the vibrating scraper 3 to a fixed position on the frame 1;

[0058] (8) Turn off the electric hoist 2, fix the vibrating scraper 3, move the cleaner to the next working position, and repeat the above operation process.

[0059] The other parts of this embodiment are all prior art and will not be described in detail here.

Claims

1. A soil cleaning machine for Larsen steel sheet pile trench, characterized by: The invention comprises a vehicle frame (1), an electric hoist lifting mechanism, and a vibrating scraper (3). The vehicle frame (1) comprises a chassis frame (1-2), an upper disk frame (1-4), and a turntable (1-3). The upper disk frame (1-4) is rotatably arranged on the chassis frame (1-2) via the turntable (1-3). A wheel (1-1) is arranged at the lower part of the chassis frame (1-2). A handrail (1-5) is arranged at the rear part of the vehicle frame (1). The electric hoist lifting mechanism is arranged on the upper disk frame (1-4). The electric hoist lifting mechanism comprises an electric hoist (2). The vibrating scraper (3) comprises a wedge-shaped steel shell (3-1), an exciter (3-2), a wedge nail (3-3), an electromagnet (3-4), and a limiting wheel (3-5). The cross section of the steel shell (3-1) is consistent with the cross section shape of the groove of the Larsen steel sheet pile. The steel shell (3-1) is a hollow structure. The front edge corner portion of the steel shell (3-1) is a solid block structure. The exciter (3-2) and the electromagnet (3-4) are both arranged in the cavity of the steel shell (3-1). The exciter (3-2) is fixed on the bottom plate of the steel shell (3-1). The wedge nail (3-3) is telescopically arranged at the edge corner portion of the steel shell (3-1) and is perpendicular to the edge corner panel. The electromagnet (3-4) consists of four pieces, which are respectively arranged at the four corners of the inner side of the bottom plate of the steel shell (3-1). A plurality of limiting wheels (3-5) are respectively arranged on the outside of the bottom plate and the outside of both sides of the steel shell (3-1). A slide rail and pulley system (5) is arranged at the front end of the upper disk frame (1-4). The tail end of the vibrating scraper (3) is connected to the steel wire rope of the electric hoist (2) and is suspended below the upper disk frame (1-4) through the slide rail and pulley system (5). The electric hoist (2) is fixed to the rear lower part of the upper plate frame (1-4); The wedge nails (3-3) are multiple and arranged at intervals, and the wedge nails (3-3) are arranged in a row transversely along the edge angle panel of the steel shell (3-1); A cam push rod mechanism is arranged in the steel housing (3-1), and the cam push rod mechanism is connected to the wedge nail (3-3); The head end of the wedge nail (3-3) is a blunt-headed conical structure, and its extension and retraction frequency is 10 to 20 times per minute.

2. The soil cleaning machine for Larsen steel sheet pile trench according to claim 1 is characterized in that: A detachable top cover plate (3-7) is provided at the top end of the steel shell (3-1).

3. The soil cleaning machine for Larsen steel sheet pile trench according to claim 1 is characterized by: Lithium battery power is used as the driving force.

4. The method for using the soil cleaning machine for Larsen steel sheet pile trench according to any one of claims 1 to 3, characterized in that: The steps include: (1) Move the cleaning machine to the working position near the Larsen steel sheet pile at the edge of the trench, and preliminarily adjust the distance between the cleaning machine frame and the steel sheet pile so that the frame is 10 to 15 cm away from the steel sheet pile. Keep the machine body stationary, and rotate the upper frame 90 degrees so that the vibrating scraper faces the working surface; (2) The vibrating scraper is horizontally moved outward along the slide rail of the slide rail and pulley system so that the vibrating scraper is located directly above the groove of the Larsen steel sheet pile; (3) Start the electric hoist to move the vibrating scraper down along the groove of the Larsen steel sheet pile to the working position, and the front edge of the vibrating scraper presses against the residual soil in the groove of the steel sheet pile; (4) Start the electromagnet in the vibrating scraper to make the vibrating scraper adsorb on the Larsen steel sheet pile; (5) Turn off the electric hoist and put it in a no-load state; (6) Start the vibrator and wedge of the vibrating scraper, and the vibrating scraper starts working; the vibrating scraper is attached to the Larsen steel sheet pile and vibrates at a high frequency, so that the residual soil in the groove of the Larsen steel sheet pile is separated from the Larsen steel sheet pile, and the front blade of the vibrating scraper is inserted into the gap between the soil and the Larsen steel sheet pile, and the soil is further split by its own weight. The wedge located on the blade is inserted and cuts off the soil, and the residual soil is gradually cleaned up until the bottom of the foundation pit; (7) Turn off the vibrator and wedge of the vibrating scraper, turn off the electromagnet, and turn on the electric hoist to lift the vibrating scraper to a fixed position on the frame; (8) Turn off the electric hoist, fix the vibrating scraper, move the cleaner to the next work station, and repeat the above steps.

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