A device and its working method for planting sheet piles in hard geological concrete.

Abstract

This invention discloses an apparatus and its working method for planting sheet piles in hard geological concrete. The integrated apparatus for planting sheet piles in soft soil includes a foundation cutting device, a traveling vehicle, a sheet pile positioning and lowering mechanism, and a working platform. The working platform is fixedly installed on the traveling vehicle, the foundation cutting device is vertically arranged on one side of the traveling vehicle, and the sheet pile positioning and lowering mechanism is installed on the working platform. The sheet pile positioning and lowering mechanism includes a horizontal and vertical adjustment mechanism and a lowering claw. The lowering claw is connected to the horizontal and vertical adjustment mechanism, and the opening of the lowering claw points in the forward direction of the traveling vehicle. The lowering claw includes a U-shaped base and an active lowering roller mechanism and a driven lowering roller mechanism respectively arranged on opposite claws of the U-shaped base. The active lowering roller mechanism is driven to rotate by a drive mechanism, and the driven lowering roller mechanism is extended and retracted by a pusher cylinder at the rear to clamp the sheet pile with the active lowering roller mechanism.

Description

Technical Field

[0001] This invention belongs to the field of foundation treatment and foundation construction technology, specifically relating to a device and its working method suitable for planting sheet piles in hard geological concrete. Background Technology

[0002] The TRD method is a construction method that involves vertically inserting a chainsaw-shaped cutter head into the ground, using the chainsaw's vertical movement to move the main unit horizontally along the wall-building direction, cutting out a trench, and injecting a curing liquid to mix it with the in-situ soil, thus constructing a continuous underground wall of uniform thickness.

[0003] Concrete sheet piles are commonly used in soft soil conditions. Compared with steel sheet piles, they have the advantages of better economy and durability. However, current technology cannot be used for construction in hard geological conditions, such as gravel layers and hard clay layers (spt>30). This is a technical problem that urgently needs to be solved.

[0004] This invention provides a device and its working method for planting concrete sheet piles in hard geological conditions. By using the TRD method to form trenches and simultaneously installing precast concrete sheet piles, it solves the problem that precast concrete sheet piles cannot be used in hard geological conditions, and constructs a process for building continuous concrete sheet piles. Summary of the Invention

[0005] The present invention aims to overcome the shortcomings of the prior art by providing a device and its working method suitable for planting sheet piles in hard geological concrete.

[0006] This invention is achieved through the following technical solution:

[0007] A device and its working method for planting sheet piles in hard geological concrete include a foundation cutting device, a traveling vehicle, a sheet pile positioning and lowering mechanism, and a working platform.

[0008] A working platform is fixedly installed on the traveling vehicle. A foundation cutting device for excavating planting trenches in hard geological conditions is vertically installed on one side of the traveling vehicle. A sheet pile positioning and lowering mechanism for positioning sheet piles and lowering them to a specified depth in hard geological conditions is installed on the working platform.

[0009] The foundation cutting device is an existing technology in the TRD method, and the foundation cutting device is a cutting box equipped with a cutting chain and a blade.

[0010] The sheet pile positioning and lowering mechanism includes a horizontal and vertical adjustment mechanism and a lowering claw. The lowering claw is connected to the horizontal and vertical adjustment mechanism, and the opening of the lowering claw points in the forward direction of the traveling vehicle.

[0011] The lowering claw includes a U-shaped base and an active lowering roller mechanism and a driven lowering roller mechanism respectively set on the opposite claws of the U-shaped base; the active lowering roller mechanism is driven to rotate by a driving mechanism, and the driven lowering roller mechanism is extended and retracted by a push cylinder set at the rear to clamp the sheet pile with the active lowering roller mechanism.

[0012] The working method of the device suitable for planting sheet piles in hard geological concrete includes the following steps:

[0013] Step 1: First, level the site, then drive the foundation cutting device into the designated location and depth. The traveling vehicle moves to the rear of the foundation cutting device, connects the foundation cutting device to the traveling vehicle, and places multiple sheet piles to be driven into the planting trench on the ground along the traveling vehicle's trajectory.

[0014] Step 2: Start the traveling vehicle. The traveling vehicle moves along the direction in which the planting trench needs to be dug, thereby driving the foundation cutting device to cut out the planting trench.

[0015] Step 3: The traveling vehicle temporarily stops, and the crane lifts the sheet pile, positioning it above the planting trench. The horizontal and vertical adjustment mechanism is adjusted so that the sheet pile is positioned in the opening of the lowering jaw. Then, the piston assembly of the push cylinder extends until the driven lowering roller mechanism and the active lowering roller mechanism clamp the sheet pile. The crane and the horizontal and vertical adjustment mechanism work together to adjust until the sheet pile is aligned with the position above the planting trench where the sheet pile is to be driven. At this time, the drive mechanism of the active lowering roller mechanism is activated, causing the active lowering roller mechanism to rotate and move the sheet pile into the planting trench.

[0016] Step 4: The push cylinder retracts, driving the second lower delivery roller back to its initial position, and the telescopic arm retracts until it returns to its initial position.

[0017] Step 5: Repeat steps 2 through 4 until all sheet piles are inserted into the planting trench.

[0018] In the above technical solution, the foundation cutting device is mounted on the traveling vehicle via a mounting plate.

[0019] In the above technical solution, the horizontal and vertical adjustment mechanism is a translation unit for adjusting the horizontal movement of the lower feeding jaw and a telescopic arm for adjusting the vertical movement of the lower feeding jaw. The translation unit includes a folding slide plate horizontally installed on the work platform and a slider slidably installed on the folding slide plate. The telescopic arm is fixedly installed above the slider, and the lower feeding jaw is fixedly connected to the moving end of the telescopic arm.

[0020] In the above technical solution, the active feeding roller mechanism includes a drive motor, a gear set, a first feeding roller frame, and a first feeding roller; the first feeding roller frame is fixedly installed on the inner wall of a claw of the U-shaped base, and the first feeding roller is rotatably installed on the first feeding roller frame; the shaft of the first feeding roller is connected to the output shaft of the drive motor through the gear set.

[0021] In the above technical solution, the driven lowering roller mechanism includes an adjustment box, a spring, a second lowering roller frame, an anti-interference plate, and a second lowering roller; a mounting hole along the thickness direction of the claw is opened on the other claw of the U-shaped base at the position corresponding to the active lowering roller mechanism; the adjustment box of the driven lowering roller mechanism is slidably installed in the adjustment box groove of the mounting hole; the cylinder body of the push cylinder is fixedly installed on the outer wall of the claw of the U-shaped base; the piston assembly of the push cylinder passes through the piston groove of the mounting hole and its actuating end is connected to the adjustment box.

[0022] In the above technical solution, one end of the second lower feeding roller frame is slidably installed in the adjustment box, and the other end is rotatably installed with the second lower feeding roller; a spring is installed in the adjustment box, and the two ends of the spring are respectively connected to the inner wall of the adjustment box and the outer wall of the second lower feeding roller frame.

[0023] In the above technical solution, an anti-interference plate is provided in the second lower feed roller frame near the second lower feed roller.

[0024] In the above technical solution, two second lower feed roller frames and two springs are slidably installed inside the adjustment box, and each spring is correspondingly located behind the second lower feed roller frame. The front end of each second lower feed roller frame is rotatably connected to the second lower feed roller.

[0025] In the above technical solution, the outer surfaces of the first and second feed rollers are both made of anti-slip material.

[0026] In the above technical solution, a first support rod is provided between the slider and the telescopic arm to facilitate the stabilization of the sheet pile positioning and lowering mechanism; a second support rod is provided between the mounting plate and the working platform to facilitate the stabilization of the mounting plate and the foundation cutting device.

[0027] The advantages and beneficial effects of this invention are as follows:

[0028] (1) The present invention connects the lower feeding claw with the horizontal and vertical adjustment mechanism, thereby adjusting the position of the lower feeding claw and thus realizing the clamping and positioning function of the sheet pile.

[0029] (2) The active feeding roller mechanism, the driven feeding roller mechanism, and the push bar of the present invention can clamp the sheet pile, and through the friction between the active feeding roller mechanism and the driven feeding roller mechanism and the sheet pile, the sheet pile can be driven into the planting trench, thereby driving the sheet pile to the specified depth of the planting trench.

[0030] (3) The present invention achieves elastic clamping of sheet piles by setting a spring in the driven lowering roller mechanism. Attached Figure Description

[0031] Figure 1 This is a front view of the present invention.

[0032] Figure 2 It is a side view of the present invention.

[0033] Figure 3 This is a top view of the feed claw of the present invention.

[0034] Figure 4 This is a side view of the feed claw of the present invention.

[0035] In the diagram, the components are: 1. Foundation cutting device; 2. Traveling vehicle; 3. Sheet pile positioning and lowering mechanism; 3. Translation unit; 3.1. Slider; 3.11. Folding slide table; 3.12. Telescopic arm; 3.2. Lowering claw; 3.3. U-shaped base; 3.31. Active lowering roller mechanism; 3.32. Drive motor; 321. Gear set; 322. First lowering roller frame; 323. First lowering roller; 324. Driven lowering roller mechanism; 3.33. Push cylinder; 331. Adjustment box; 332. Spring; 333. Second lowering roller frame; 334. Anti-interference plate; 335. Second lowering roller; 336. Working platform; 4. Mounting plate; 5. First support rod; 6. Second support rod; 7. Adjustment box groove; m. Piston groove; n. Mounting hole; 8.

[0036] For ordinary technicians in this field, other relevant drawings can be obtained based on the above drawings without any creative work. Detailed Implementation

[0037] To enable those skilled in the art to better understand the present invention, the technical solution of the present invention will be further described below with reference to specific embodiments.

[0038] Example 1

[0039] A device suitable for planting sheet piles in hard geological concrete, see appendix. Figure 1-4 It includes a foundation cutting device 1, a traveling vehicle 2, a sheet pile positioning and lowering mechanism 3, and a working platform 4.

[0040] See appendix Figure 1The working platform 4 is fixedly installed on the traveling vehicle 2. The foundation cutting device 1, which is used to excavate the pile planting trench in hard geology, is vertically set on one side of the traveling vehicle 2. The sheet pile positioning and lowering mechanism 3, which is used to position the sheet pile and lower it to a specified depth in the hard geology, is installed on the working platform 4.

[0041] See appendix Figure 1 -Appendix Figure 2 The foundation cutting device 1 is an existing technology in the TRD construction method. The foundation cutting device 1 is a cutting box 1.1 with a cutting chain and a cutter head 1.2. It is installed on the traveling vehicle 2 through the mounting plate 5. As the traveling vehicle 2 moves, it drives the foundation cutting device 1 to cut a pile planting trench in the hard geological conditions.

[0042] See appendix Figure 2 -Appendix Figure 3 The sheet pile positioning and lowering mechanism 3 includes a horizontal and vertical adjustment mechanism and a lowering claw 3.3. The lowering claw 3.3 is connected to the horizontal and vertical adjustment mechanism, and the lowering claw 3.3 can move laterally (along the direction of travel of the traveling vehicle) and longitudinally (perpendicular to the direction of travel of the traveling vehicle) through the connection with the horizontal and vertical adjustment mechanism. Further, the horizontal and vertical adjustment mechanism consists of a translation unit 3.1 for adjusting the lateral movement of the lowering claw 3.3 and a telescopic arm 3.2 for adjusting the longitudinal movement of the lowering claw 3.3. The translation unit 3.1 includes a folding slide 3.12 horizontally mounted on the working platform 4 and a slider 3.11 slidably mounted on the folding slide 3.12. The telescopic arm 3.2 is fixedly mounted above the slider 3.11, and the lowering claw 3.3 is fixedly connected to the moving end of the telescopic arm 3.2, with the opening of the lowering claw 3.3 pointing towards the forward direction of the traveling vehicle 2.

[0043] See appendix Figure 3 -Appendix Figure 4The lowering jaw 3.3 includes a U-shaped base 3.31 and an active lowering roller mechanism 3.32 and a driven lowering roller mechanism 3.33 respectively disposed on opposite jaws of the U-shaped base 3.31. The active lowering roller mechanism 3.32 rotates via a drive mechanism. Specifically, the active lowering roller mechanism 3.32 includes a drive motor 321, a gear set 322, a first lowering roller frame 323, and a first lowering roller 324. The first lowering roller frame 323 is fixedly mounted on the inner wall of one jaw of the U-shaped base 3.31, and the first lowering roller 324 is rotatably mounted on the first lowering roller frame 323. The shaft of the first lowering roller 324 is connected to the output shaft of the drive motor 321 via the gear set 322. The driven lowering roller mechanism 3.33 achieves forward and backward extension via a rear-mounted push cylinder 331, thereby clamping the sheet pile with the active lowering roller mechanism 3.32. More specifically, the driven lowering roller mechanism 3.33 includes an adjustment box 332, a spring 333, a second lowering roller frame 334, an anti-interference plate 335, and a second lowering roller 336. A mounting hole along the thickness direction of the claw is formed on the other claw of the U-shaped base 3.31 at the position corresponding to the active lowering roller mechanism 3.32. 8. The adjusting box 332 of the driven lowering roller mechanism 3.33 is slidably installed in the adjusting box groove m of the mounting hole. The cylinder body of the push cylinder 331 is fixedly installed on the outer wall of the claw of the U-shaped base 3.31. The piston assembly of the push cylinder 331 passes through the piston groove n of the mounting hole and its actuating end is connected to the adjusting box 332. The push cylinder 331 can drive the adjusting box 332 to slide relative to each other in the adjusting box groove m. One end of the second lowering roller frame 334 is slidably installed in the adjusting box 332. Inside, a second lowering roller 336 is rotatably installed at the other end; a spring 333 (the spring is sleeved in a telescopic sleeve) is installed inside the adjusting box 332, and the two ends of the spring 333 are respectively connected to the inner wall of the adjusting box 332 and the outer wall of the second lowering roller frame 334. When the sheet pile is located in the opening of the lowering claw 3.3, the push cylinder 331 can drive the driven lowering roller mechanism 3.33 to push against the outer wall of the sheet pile, thereby causing the driven lowering roller mechanism 3.33 and the active lowering roller mechanism 3.32 to clamp the sheet pile. The outer wall of the pile is also equipped with a spring 333 to allow the lowering claw 3.3 to hold the sheet pile elastically, preventing the jacking cylinder 331 from over-extending and causing excessive hard clamping force that could damage the sheet pile. An anti-interference plate 335 is installed inside the second lowering roller frame 334 near the second lowering roller 336 to prevent the outer wall of the adjusting box 332 from contacting the second lowering roller 336 when the second lowering roller frame 334 slides within the adjusting box 332, thus affecting the rotation of the second lowering roller 336. Preferably, see the appendix. Figure 4In order to better achieve elastic clamping of sheet piles, two second lower feeding roller frames 334 and two springs 333 are slidably installed in the adjustment box 332, and each spring 333 is correspondingly arranged behind the second lower feeding roller frame 334. The front end of each second lower feeding roller frame 334 is rotatably connected to the second lower feeding roller 336.

[0044] When the crane lifts the sheet pile and positions it above the planting trench, the telescopic boom 3.2 extends until the opening of the lowering jaw 3.3 aligns with the side of the sheet pile. The translation unit then moves the lowering jaw 3.3 until the sheet pile is positioned within the opening of the lowering jaw 3.3. At this point, the piston assembly of the push cylinder 331 extends until the active lowering roller mechanism 3.32 and the driven lowering roller mechanism 3.33 of the lowering jaw 3.3 clamp the relative outer walls of the sheet pile. Afterward, the crane and telescopic boom... Arm 3.2 and translation unit 3.1 are adjusted together until the sheet pile is aligned with the position above the planting trench where the sheet pile is to be driven. At this time, the drive motor 321 of the active lowering roller mechanism 3.32 starts, causing the first lowering roller 324 to rotate. Since the outer surfaces of the first lowering roller 324 and the second lowering roller 336 are made of anti-slip material, the friction between the first lowering roller 324 and the second lowering roller 336 and the sheet pile drives the sheet pile to move into the planting trench.

[0045] Preferably, a first support rod 6 is provided between the slider 3.11 and the telescopic arm 3.2 to facilitate the stabilization of the sheet pile positioning and lowering mechanism 3.

[0046] Preferably, a second support rod 7 is provided between the mounting plate 5 and the working platform 4 to facilitate the stability of the mounting plate 5 and the foundation cutting device 1.

[0047] Preferably, the vehicle 2 is a tracked vehicle.

[0048] Example 2

[0049] A method for using a device suitable for planting sheet piles in hard geological concrete includes the following steps:

[0050] Step 1: First, level the site, then drive the foundation cutting device 1 into the designated location and depth. The traveling vehicle 2 drives to the rear of the foundation cutting device 1 and connects the foundation cutting device to the traveling vehicle. The multiple sheet piles to be driven into the planting trench are pre-suspended on the ground along the travel trajectory of the traveling vehicle 2.

[0051] Step 2: Start the traveling vehicle 2. The traveling vehicle 2 travels along the direction in which the planting trench needs to be dug, thereby driving the foundation cutting device 1 to cut out the planting trench.

[0052] Step 3: The traveling vehicle 2 temporarily stops moving, and the crane lifts the sheet pile, positioning it above the planting trench. The telescopic arm 3.2 extends until the opening of the lowering jaw 3.3 aligns with the side of the sheet pile. The translation unit moves the lowering jaw 3.3 until the sheet pile is positioned within the opening of the lowering jaw 3.3. At this point, the piston assembly of the push cylinder 331 extends until the active lowering roller mechanism 3.32 and the driven lowering roller mechanism 3.33 of the lowering jaw 3.3 clamp the relative outer walls of the sheet pile. Afterwards... The crane and telescopic boom 3.2 and translation unit 3.1 are adjusted together until the sheet pile is aligned with the position above the pile driving trench. At this time, the drive motor 321 of the active lowering roller mechanism 3.32 starts, which drives the first lowering roller 324 to rotate. Since the outer surfaces of the first lowering roller 324 and the second lowering roller 336 are made of anti-slip material, the friction between the first lowering roller 324 and the second lowering roller 336 and the sheet pile drives the sheet pile to move into the pile driving trench.

[0053] Step 4: The push cylinder 331 retracts, driving the second lower delivery roller 336 back to its initial position, and the telescopic arm 3.2 retracts until it returns to its initial position.

[0054] Step 5: Repeat steps 2 through 4 until all sheet piles are inserted into the planting trench.

[0055] For ease of explanation, spatial relative terms such as “up,” “down,” “left,” and “right” are used in the embodiments to describe the relationship of one element or feature shown in the figures relative to another element or feature. It should be understood that, in addition to the orientations shown in the figures, spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figures is inverted, an element described as being “down” of other elements or features would be positioned “up” of those other elements or features. Therefore, the exemplary term “down” can encompass both up and down orientations. The device may be positioned in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0056] Moreover, relational terms such as “first” and “second” are used merely to distinguish one component from another that has the same name, without necessarily requiring or implying any such actual relationship or order between the components.

[0057] The present invention has been described above by way of example. It should be noted that any simple modifications, alterations or other equivalent substitutions that can be made by those skilled in the art without creative effort without departing from the core of the present invention fall within the protection scope of the present invention.

Claims

1. A device suitable for planting sheet piles in hard geological concrete, characterized in that: Includes foundation cutting device, traveling vehicle, sheet pile positioning and lowering mechanism and working platform; A working platform is fixedly installed on the traveling vehicle. A foundation cutting device for excavating pile planting trenches in hard geology is vertically set on one side of the traveling vehicle. A sheet pile positioning and lowering mechanism is installed on the working platform for positioning sheet piles and lowering the sheet piles to a specified depth in hard geology. The foundation cutting device is an existing technology in the TRD method, and the foundation cutting device is a cutting box equipped with a cutting chain and a blade. The sheet pile positioning and lowering mechanism includes a horizontal and vertical adjustment mechanism and a lowering claw. The lowering claw is connected to the horizontal and vertical adjustment mechanism, and the opening of the lowering claw points in the forward direction of the traveling vehicle. The lowering claw includes a U-shaped base and an active lowering roller mechanism and a driven lowering roller mechanism respectively set on the opposite claws of the U-shaped base; the active lowering roller mechanism is driven to rotate by a driving mechanism, and the driven lowering roller mechanism is extended and retracted by a push cylinder set at the rear to clamp the sheet pile with the active lowering roller mechanism. The active feed roller mechanism includes a drive motor, a gear set, a first feed roller frame, and a first feed roller; the first feed roller frame is fixedly installed on the inner wall of a claw of the U-shaped base, and the first feed roller is rotatably installed on the first feed roller frame; the shaft of the first feed roller is connected to the output shaft of the drive motor through the gear set. The driven feed roller mechanism includes an adjustment box, a spring, a second feed roller frame, an anti-interference plate, and a second feed roller. A mounting hole is formed on the other claw of the U-shaped base at a position corresponding to the active feed roller mechanism, along the thickness direction of the claw. The adjustment box of the driven feed roller mechanism is slidably installed in the adjustment box groove of the mounting hole. The cylinder body of the push cylinder is fixedly installed on the outer wall of the claw of the U-shaped base. The piston assembly of the push cylinder passes through the piston groove of the mounting hole, and its actuating end is connected to the adjustment box.

2. The device for planting sheet piles in hard geological concrete according to claim 1, characterized in that: The foundation cutting device is mounted on the traveling vehicle via a mounting plate; The horizontal and vertical adjustment mechanism comprises a translation unit for adjusting the lateral movement of the lower feeding jaw and a telescopic arm for adjusting the longitudinal movement of the lower feeding jaw. The translation unit includes a folding slide plate horizontally mounted on the work platform and a slider slidably mounted on the folding slide plate. The telescopic arm is fixedly mounted above the slider, and the lower feeding jaw is fixedly connected to the moving end of the telescopic arm.

3. The device for planting sheet piles in hard geological concrete according to claim 1, characterized in that: One end of the second lower feed roller frame is slidably installed inside the adjustment box, and the other end is rotatably installed with the second lower feed roller; a spring is installed inside the adjustment box, and the two ends of the spring are respectively connected to the inner wall of the adjustment box and the outer wall of the second lower feed roller frame.

4. The device for planting sheet piles in hard geological concrete according to claim 3, characterized in that: An anti-interference plate is installed inside the second lower feed roller frame near the second lower feed roller.

5. The device for planting sheet piles in hard geological concrete according to claim 4, characterized in that: Two second lower feed roller frames and two springs are slidably installed inside the adjustment box, and each spring is correspondingly located behind the second lower feed roller frame. The front end of each second lower feed roller frame is rotatably connected to the second lower feed roller.

6. The device for planting sheet piles in hard geological concrete according to claim 1, characterized in that: The outer surfaces of both the first and second feed rollers are made of anti-slip material.

7. The device for planting sheet piles in hard geological concrete according to claim 2, characterized in that: A first support rod is provided between the slider and the telescopic arm to facilitate the stabilization of the sheet pile positioning and lowering mechanism; a second support rod is provided between the mounting plate and the working platform to facilitate the stabilization of the mounting plate and the foundation cutting device.

8. A method for operating the device for planting sheet piles in hard geological concrete as described in any one of claims 1-7, characterized in that: Includes the following steps: Step 1: First, level the site, then drive the foundation cutting device into the designated location and depth. The traveling vehicle moves to the rear of the foundation cutting device, connects the foundation cutting device to the traveling vehicle, and places multiple sheet piles to be driven into the planting trench on the ground along the traveling vehicle's trajectory. Step 2: Start the traveling vehicle. The traveling vehicle moves along the direction in which the planting trench needs to be dug, thereby driving the foundation cutting device to cut out the planting trench. Step 3: The traveling vehicle temporarily stops, and the crane lifts the sheet pile, positioning it above the planting trench. The horizontal and vertical adjustment mechanism is adjusted so that the sheet pile is positioned in the opening of the lowering jaw. Then, the piston assembly of the push cylinder extends until the driven lowering roller mechanism and the active lowering roller mechanism clamp the sheet pile. The crane and the horizontal and vertical adjustment mechanism work together to adjust until the sheet pile is aligned with the position above the planting trench where the sheet pile is to be driven. At this time, the drive mechanism of the active lowering roller mechanism is activated, causing the active lowering roller mechanism to rotate and move the sheet pile into the planting trench. Step four: The push cylinder retracts, driving the second lower delivery roller back to its initial position, and the telescopic arm retracts until it returns to its initial position; Step 5: Repeat steps 2 through 4 until all sheet piles are inserted into the planting trench.

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