Device suitable for planting concrete sheet piles in hard geology and working method of device

Abstract

The invention discloses a device suitable for planting concrete sheet piles in hard geology and a working method of the device, and the integrated device suitable for planting the sheet piles in soft soil geology comprises a foundation cutting device, a walking vehicle, a sheet pile positioning and downward conveying mechanism and a working platform; the working platform is fixedly installed on the walking vehicle, the foundation cutting device is vertically arranged on one side of the walking vehicle, and the sheet pile positioning and downward conveying mechanism is installed on the working platform. The sheet pile positioning and downward conveying mechanism comprises a transverse and longitudinal adjusting mechanism and a downward conveying clamping jaw, the downward conveying clamping jaw is connected with the transverse and longitudinal adjusting mechanism, and an opening of the downward conveying clamping jaw points to the advancing direction of the walking vehicle. The downward feeding clamping jaw comprises a U-shaped base body, a driving downward feeding roller mechanism and a driven downward feeding roller mechanism, wherein the driving downward feeding roller mechanism and the driven downward feeding roller mechanism are arranged on opposite supporting jaws of the U-shaped base body respectively. A driving mechanism is arranged in the driving downward-feeding roller mechanism to achieve rotation, and a pushing cylinder is arranged behind the driven downward-feeding roller mechanism to achieve front-back stretching and retracting, so that the driven downward-feeding roller mechanism and the driving downward-feeding roller mechanism clamp a sheet pile.

Description

Technical Field

[0001] The invention belongs to the technical field of foundation treatment and infrastructure construction, and in particular relates to a device suitable for planting piles of hard geological concrete sheet piles and a working method thereof. Background Art

[0002] The TRD method is a construction method in which a chain saw-type blade port is vertically inserted into the ground to connect the blade chain saw. The chain saw blade drill moves up and down, and the main machine moves horizontally in the wall-building direction. A ditch is cut and a solidifying liquid is injected to mix it with the in-situ soil to construct an underground continuous wall of equal thickness.

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

[0004] The present invention provides a device and a working method suitable for planting concrete sheet piles in hard geological conditions. The device forms grooves through the TRD method and simultaneously installs precast concrete sheet piles, thereby solving the problem that precast concrete sheet piles cannot be used for construction in hard geological conditions and constructing a process for continuous concrete sheet piles. Summary of the invention

[0005] The present invention is mainly to overcome the deficiencies of the prior art and provides a device and a working method suitable for planting piles in hard geological concrete sheet piles.

[0006] The present invention is achieved through the following technical solutions:

[0007] A device for planting piles in hard geological concrete sheet piles and a working method thereof, the device for planting piles in hard geological concrete sheet piles comprising 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 digging a pile groove in hard geology is vertically arranged on one side of the traveling vehicle, and a sheet pile positioning and sending mechanism for positioning sheet piles and sending the sheet piles to a specified depth in the hard geology is installed on the working platform;

[0009] The foundation cutting device is a prior art in the TRD method, and the foundation cutting device is a cutting box with a cutting chain and a cutter head;

[0010] The sheet pile positioning and lowering mechanism comprises a transverse and longitudinal adjustment mechanism and a lowering claw, wherein the lowering claw is connected to the transverse and longitudinal adjustment mechanism, and the opening of the lowering claw points to the forward direction of the traveling vehicle;

[0011] The lower feeding claw comprises a U-shaped base and an active lower feeding roller mechanism and a driven lower feeding roller mechanism respectively arranged on the opposite claws of the U-shaped base; the active lower feeding roller mechanism is rotated by arranging a driving mechanism, and the driven lower feeding roller mechanism is extended and retracted forward and backward by arranging a push cylinder at the rear, thereby clamping the sheet pile with the active lower feeding roller mechanism;

[0012] The working method of the device suitable for hard geological concrete sheet pile planting comprises the following steps:

[0013] Step 1: first level the site, then drive the foundation cutting device into the designated depth at the designated position, the traveling vehicle drives to the rear side of the foundation cutting device, connects the foundation cutting device with the traveling vehicle, and pre-hangs a plurality of sheet piles to be driven into the pile grooves on the ground along the driving track of the traveling vehicle;

[0014] Step 2: Start the traveling vehicle, and the traveling vehicle moves in the direction where the pile groove needs to be set, thereby driving the foundation cutting device to cut the pile groove;

[0015] Step 3: The traveling vehicle temporarily stops traveling, and the crane lifts the sheet pile so that the sheet pile is located above the pile groove. The horizontal and vertical adjustment mechanism is adjusted so that the sheet pile is located in the opening of the lower delivery claw. Then, the piston assembly of the push cylinder is extended until the driven lower delivery roller mechanism and the active lower delivery roller mechanism clamp the sheet pile. The crane cooperates with the horizontal and vertical adjustment mechanism to adjust until the sheet pile is driven to align above the position where the sheet pile is to be driven in the pile groove. At this time, the driving mechanism of the active lower delivery roller mechanism is started, driving the active lower delivery roller mechanism to rotate, and driving the sheet pile to move into the pile groove.

[0016] Step 5: Repeat steps 2 to 4 until all the sheet piles are planted in the pile grooves.

[0017] In the above technical solution, the foundation cutting device is installed on the traveling vehicle through a mounting plate.

[0018] In the above technical solution, the transverse and longitudinal adjustment mechanism is a translation unit for adjusting the lateral movement of the lower sending claw and a telescopic arm for adjusting the longitudinal movement of the lower sending claw, wherein the translation unit includes a folding and reverse slide table laterally installed on the working platform and a slider slidably installed on the folding and reverse slide table; the telescopic arm is fixedly installed above the slider, and the lower sending claw is fixedly connected to the action end of the telescopic arm.

[0019] In the above technical solution, the active downward feeding roller mechanism includes a driving motor, a gear set, a first downward feeding roller frame and a first downward feeding roller; the first downward feeding roller frame is fixedly mounted on an inner wall of a support claw of the U-shaped base, the first downward feeding roller is rotatably mounted on the first downward feeding roller frame, and the rotating shaft of the first downward feeding roller is connected to the output rotating shaft of the driving motor through a gear set.

[0020] In the above technical solution, the driven downward feeding roller mechanism includes an adjustment box, a spring, a second downward feeding roller frame, an anti-interference plate and a second downward feeding roller; a mounting hole along the thickness direction of the support claw is opened on the other support claw of the U-shaped base at the position corresponding to the active downward feeding roller mechanism, and the adjustment box of the driven downward feeding roller mechanism is slidably installed in the adjustment box body groove of the mounting hole, the cylinder body of the push cylinder is fixedly installed on the outer wall of the support claw of the U-shaped base, and the piston assembly of the push cylinder passes through the piston groove of the mounting hole and its action end is connected to the adjustment box.

[0021] In the above technical solution, one end of the second downward feeding roller frame is slidably installed in the adjustment box, and the other end is rotatably installed with the second downward 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 downward feeding roller frame.

[0022] In the above technical solution, an anti-interference plate is arranged in the second lower feeding roller frame at a position close to the second lower feeding roller.

[0023] In the above technical solution, two second lower feeding roller frames and two springs are slidably installed in the adjustment box, and each spring is correspondingly arranged behind the second lower feeding roller frame, and the front end of each second lower feeding roller frame is rotatably connected to the second lower feeding roller.

[0024] In the above technical solution, the outer surfaces of the first downward feeding roller and the second downward feeding roller are both made of anti-slip material.

[0025] In the above technical solution, a first support rod is arranged between the slider and the telescopic arm to stabilize the sheet pile positioning and lowering mechanism; a second support rod is arranged between the mounting plate and the working platform to stabilize the mounting plate and the foundation cutting device.

[0026] The advantages and beneficial effects of the present invention are:

[0027] (1) The present invention connects the lower feeding claw to the transverse and longitudinal adjustment mechanism, thereby being able to adjust the position of the lower feeding claw and thereby achieve a clamping and positioning function for the sheet pile.

[0028] (2) The active downward roller mechanism, the driven downward roller mechanism and the push rod of the present invention can clamp the sheet piles, and through the friction between the active downward roller mechanism and the driven downward roller mechanism and the sheet piles, can drive the sheet piles to move into the pile planting groove, thereby driving the sheet piles to a specified depth of the pile planting groove.

[0029] (3) The present invention realizes elastic clamping of the sheet pile by providing a spring in the driven lower feed roller mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a front view of the present invention.

[0031] Figure 2 It is a side view of the present invention.

[0032] Figure 3 It is a top view of the downward delivery claw of the present invention.

[0033] Figure 4 It is a side view of the downward delivery claw of the present invention.

[0034] In the figure, foundation cutting device 1, traveling vehicle 2, sheet pile positioning and sending mechanism 3, translation unit 3.1, slider 3.11, folding and reverse slide 3.12, telescopic arm 3.2, sending claw 3.3, U-shaped base 3.31, active sending roller mechanism 3.32, driving motor 321, gear set 322, first sending roller frame 323, first sending roller 324, driven sending roller mechanism 3.33, push cylinder 331, adjustment box 332, spring 333, second sending roller frame 334, anti-interference plate 335, second sending 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.

[0035] For ordinary technicians in this field, other relevant drawings can be obtained based on the above drawings without any creative work. DETAILED DESCRIPTION

[0036] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention is further described below in conjunction with specific embodiments.

[0037] Embodiment 1

[0038] A device suitable for planting piles in hard geological concrete sheet piles, see attached Figure 1-4 , including a foundation cutting device 1, a traveling vehicle 2, a sheet pile positioning and sending mechanism 3 and a working platform 4.

[0039] See attached Figure 1 A working platform 4 is fixedly installed on the traveling vehicle 2, a foundation cutting device 1 for digging a pile groove in hard geology is vertically arranged on one side of the traveling vehicle 2, and the sheet pile positioning and sending mechanism 3 for positioning the sheet piles and sending the sheet piles to a specified depth in the hard geology is installed on the working platform 4.

[0040] See attached Figure 1 -Attached Figure 2 The foundation cutting device 1 is a prior art in the TRD method. The foundation cutting device 1 is a cutting box 1.1 with a cutting chain and a cutter head 1.2, which is installed on the traveling vehicle 2 through a mounting plate 5. As the traveling vehicle 2 travels, the foundation cutting device 1 is driven to cut a pile groove in the hard geology.

[0041] See attached Figure 2 -Attached Figure 3 The sheet pile positioning and lowering mechanism 3 includes a transverse and longitudinal adjustment mechanism and a lowering claw 3.3; the lowering claw 3.3 is connected to the transverse and longitudinal adjustment mechanism, and the lowering claw 3.3 realizes the transverse (along the traveling direction of the trolley) movement and the longitudinal (perpendicular to the traveling direction of the trolley) movement of the lowering claw 3.3 by connecting to the transverse and longitudinal adjustment mechanism. Further, the transverse and longitudinal adjustment mechanism is a translation unit 3.1 for adjusting the transverse movement of the lowering claw 3.3 and a telescopic arm 3.2 for adjusting the longitudinal movement of the lowering claw 3.3, wherein the translation unit 3.1 includes a folding and reversing slide 3.12 transversely mounted on the working platform 4 and a slider 3.11 slidably mounted on the folding and reversing slide 3.12; the telescopic arm 3.2 is fixedly mounted above the slider 3.11, the lowering claw 3.3 is fixedly connected to the action end of the telescopic arm 3.2, and the opening of the lowering claw 3.3 points to the forward direction of the trolley 2.

[0042] See attached Figure 3 -Attached Figure 4The lower feeding claw 3.3 includes a U-shaped base 3.31 and an active lower feeding roller mechanism 3.32 and a driven lower feeding roller mechanism 3.33 respectively arranged on the opposite claws of the U-shaped base 3.31. The active lower feeding roller mechanism 3.32 is rotated by arranging a driving mechanism. Specifically, the active lower feeding roller mechanism 3.32 includes a driving motor 321, a gear set 322, a first lower feeding roller frame 323 and a first lower feeding roller 324; the first lower feeding roller frame 323 is fixedly mounted on the inner wall of a claw of the U-shaped base 3.31, the first lower feeding roller 324 is rotatably mounted on the first lower feeding roller frame 323, and the rotating shaft of the first lower feeding roller 324 is connected to the output rotating shaft of the driving motor 321 through the gear set 322. The driven lower feeding roller mechanism 3.33 is extended forward and backward by a push cylinder 331 arranged at the rear, so as to clamp the sheet pile with the active lower feeding roller mechanism 3.32. Further, the driven lower feeding roller mechanism 3.33 includes an adjustment box 332, a spring 333, a second lower feeding roller frame 334, an anti-interference plate 335 and a second lower feeding roller 336; a mounting hole along the thickness direction of the claw is provided on the other claw of the U-shaped base 3.31 at a position corresponding to the active lower feeding roller mechanism 3.32 8. The adjustment box 332 of the driven downward delivery roller mechanism 3.33 is slidably mounted in the adjustment box body groove m of the mounting hole. The cylinder body of the push cylinder 331 is fixedly mounted on the outer wall of the support 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 action end is connected to the adjustment box 332. The push cylinder 331 can drive the adjustment box 332 to slide relatively in the adjustment box body groove m. One end of the second downward delivery roller frame 334 is slidably mounted on the adjustment box 332. A spring 333 is installed in the adjusting box 332 (the spring is sleeved in a telescopic sleeve), 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 lower feeding roller frame 334. When the sheet pile is located in the opening of the lower feeding claw 3.3, the push cylinder 331 can drive the driven lower feeding roller mechanism 3.33 to push against the outer wall of the sheet pile so that the driven lower feeding roller mechanism 3.33 and the active lower feeding roller mechanism 3.32 clamp the sheet pile. The outer wall of the pile, and the spring 333 is arranged to make the clamping of the sheet pile by the lower feeding claw 3.3 elastic, so as to prevent the over-extension of the push cylinder 331 and the excessive rigid holding force on the sheet pile, which may damage the sheet pile; an anti-interference plate 335 is arranged at a position near the second lower feeding roller 336 in the second lower feeding roller frame 334, so as to prevent the outer wall of the adjustment box from contacting the second lower feeding roller 336 when the second lower feeding roller frame 334 slides in the adjustment box 332, thereby affecting the rotation of the second lower feeding roller 336. As a preferred embodiment, see the attached Figure 4In order to better realize the elastic clamping of the sheet pile, 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 at the rear of the second lower feeding roller frame 334, and the front end of each second lower feeding roller frame 334 is rotatably connected to the second lower feeding roller 336.

[0043] When the crane lifts the sheet pile so that the sheet pile is located above the pile groove, the telescopic arm 3.2 extends until the opening of the lower delivery claw 3.3 is aligned with the side of the sheet pile, and the translation unit drives the lower delivery claw 3.3 to translate until the sheet pile is located in the opening of the lower delivery claw 3.3; at this time, the piston assembly of the push cylinder 331 extends until the active lower delivery roller mechanism 3.32 and the driven lower delivery roller mechanism 3.33 of the lower delivery claw 3.3 clamp the relative outer wall of the sheet pile; then, the crane and the telescopic arm 3.2 extend to align the opening of the lower delivery claw 3.3 with the side of the sheet pile, and the translation unit drives the lower delivery claw 3.3 to translate until the sheet pile is located in the opening of the lower delivery claw 3.3; at this time, the piston assembly of the push cylinder 331 extends until the active lower delivery roller mechanism 3.32 and the driven lower delivery roller mechanism 3.33 of the lower delivery claw 3.3 clamp the relative outer wall of the sheet pile; The arm 3.2 and the translation unit 3.1 cooperate and adjust until the sheet pile is driven to align above the position where the sheet pile is to be driven in the pile planting groove. At this time, the driving motor 321 of the active lower feeding roller mechanism 3.32 is started, driving the first lower feeding roller 324 to rotate. Since the outer surfaces of the first lower feeding roller 324 and the second lower feeding roller 336 are made of anti-slip material, the friction between the first lower feeding roller 324 and the second lower feeding roller 336 and the sheet pile drives the sheet pile to move into the pile planting groove.

[0044] Preferably, a first support rod 6 is provided between the sliding block 3.11 and the telescopic arm 3.2 to stabilize the sheet pile positioning and lowering mechanism 3.

[0045] Preferably, a second support rod 7 is provided between the mounting plate 5 and the working platform 4 to stabilize the mounting plate 5 and the foundation cutting device 1 .

[0046] Preferably, the traveling vehicle 2 is a tracked vehicle.

[0047] Embodiment 2

[0048] A working method of a device suitable for planting piles in hard geological concrete sheet piles, comprising the following steps:

[0049] Step 1: first level the site, then drive the foundation cutting device 1 into the designated position and the designated depth, the traveling vehicle 2 drives to the rear side of the foundation cutting device 1, and connects the foundation cutting device to the traveling vehicle; a plurality of sheet piles to be driven into the pile grooves are pre-suspended on the ground along the driving track of the traveling vehicle 2;

[0050] Step 2, start the traveling vehicle 2, and the traveling vehicle 2 moves in the direction where the pile groove needs to be set, thereby driving the foundation cutting device 1 to cut the pile groove;

[0051] Step 3: The traveling vehicle 2 temporarily stops traveling, and the crane lifts the sheet pile so that the sheet pile is located above the pile groove. The telescopic arm 3.2 extends until the opening of the lower delivery claw 3.3 is aligned with the side of the sheet pile, and the translation unit drives the lower delivery claw 3.3 to translate until the sheet pile is located in the opening of the lower delivery claw 3.3; at this time, the piston assembly of the push cylinder 331 extends until the active lower delivery roller mechanism 3.32 and the driven lower delivery roller mechanism 3.33 of the lower delivery claw 3.3 clamp the relative outer wall of the sheet pile; then The crane cooperates with the telescopic arm 3.2 and the translation unit 3.1 to adjust until the sheet pile is aligned with the position above the pile groove where the sheet pile is to be driven. At this time, the driving motor 321 of the active lower feeding roller mechanism 3.32 is started, driving the first lower feeding roller 324 to rotate. Since the outer surfaces of the first lower feeding roller 324 and the second lower feeding roller 336 are both made of anti-slip material, the friction between the first lower feeding roller 324 and the second lower feeding roller 336 and the sheet pile drives the sheet pile to move into the pile groove;

[0052] Step 4: The push cylinder 331 retracts, driving the second lower delivery roller 336 back to the initial position, and the telescopic arm 3.2 retracts until it returns to the initial position;

[0053] Step 5: Repeat steps 2 to 4 until all the sheet piles are planted in the pile grooves.

[0054] For ease of explanation, spatial relative terms such as "upper", "lower", "left", "right" and the like are used in the embodiments to illustrate the relationship of one element or feature shown in the figure relative to another element or feature. It should be understood that, in addition to the orientation shown in the figure, the spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figure is inverted, the element described as being "under" other elements or features will be positioned "on" other elements or features. Therefore, the exemplary term "under" can include both upper and lower orientations. The device can be positioned in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used here can be interpreted accordingly.

[0055] Furthermore, relational terms such as “first” and “second” and the like are merely used to distinguish one component from another having the same name, but do not necessarily require or imply any such actual relationship or order between these components.

[0056] The present invention is described above by way of example. It should be noted that, without departing from the core of the present invention, any simple deformation, modification or other equivalent replacement that can be made by those skilled in the art without inventive effort falls within the protection scope of the present invention.

Claims

1. A device for planting piles in hard geological concrete sheet piles and a working method thereof, wherein the device for planting piles in hard geological concrete sheet piles is characterized in that: It 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 digging a pile groove in hard geology is vertically arranged on one side of the traveling vehicle, and a sheet pile positioning and sending mechanism for positioning sheet piles and sending the sheet piles to a specified depth in the hard geology is installed on the working platform; The foundation cutting device is a prior art in the TRD method, and the foundation cutting device is a cutting box with a cutting chain and a cutter head; The sheet pile positioning and lowering mechanism comprises a transverse and longitudinal adjustment mechanism and a lowering claw, wherein the lowering claw is connected to the transverse and longitudinal adjustment mechanism, and the opening of the lowering claw points to the forward direction of the traveling vehicle; The lower feeding claw comprises a U-shaped base and an active lower feeding roller mechanism and a driven lower feeding roller mechanism respectively arranged on the opposite claws of the U-shaped base; the active lower feeding roller mechanism is rotated by arranging a driving mechanism, and the driven lower feeding roller mechanism is extended and retracted forward and backward by arranging a push cylinder at the rear, thereby clamping the sheet pile with the active lower feeding roller mechanism; The working method of the device suitable for hard geological concrete sheet pile planting comprises the following steps: Step 1: first level the site, then drive the foundation cutting device into the designated depth at the designated position, the traveling vehicle drives to the rear side of the foundation cutting device, connects the foundation cutting device with the traveling vehicle, and pre-hangs a plurality of sheet piles to be driven into the pile grooves on the ground along the driving track of the traveling vehicle; Step 2: Start the traveling vehicle, and the traveling vehicle moves in the direction where the pile groove needs to be set, thereby driving the foundation cutting device to cut the pile groove; Step 3: The traveling vehicle temporarily stops traveling, and the crane lifts the sheet pile so that the sheet pile is located above the pile groove. The horizontal and vertical adjustment mechanism is adjusted so that the sheet pile is located in the opening of the lower delivery claw. Then, the piston assembly of the push cylinder is extended until the driven lower delivery roller mechanism and the active lower delivery roller mechanism clamp the sheet pile. The crane cooperates with the horizontal and vertical adjustment mechanism to adjust until the sheet pile is driven to align above the position where the sheet pile is to be driven in the pile groove. At this time, the driving mechanism of the active lower delivery roller mechanism is started, driving the active lower delivery roller mechanism to rotate, and driving the sheet pile to move into the pile groove. Step 4: The push cylinder 331 retracts, driving the second lower delivery roller 336 back to the initial position, and the telescopic arm 3.2 retracts until it returns to the initial position; Step 5: Repeat steps 2 to 4 until all the sheet piles are planted in the pile grooves.

2. The device and working method for pile planting in hard geological concrete sheet piles according to claim 1, characterized in that: The foundation cutting device is installed on the traveling vehicle through a mounting plate.

3. The device and working method for pile planting in hard geological concrete sheet piles according to claim 1, characterized in that: The transverse and longitudinal adjustment mechanism is a translation unit for adjusting the lateral movement of the lower sending claw and a telescopic arm for adjusting the longitudinal movement of the lower sending claw, wherein the translation unit includes a folding and reverse slide table laterally installed on the working platform and a slider slidably installed on the folding and reverse slide table; the telescopic arm is fixedly installed above the slider, and the lower sending claw is fixedly connected to the action end of the telescopic arm.

4. The device and working method for pile planting in hard geological concrete sheet piles according to claim 1, characterized in that: The active downward feeding roller mechanism comprises a driving motor, a gear set, a first downward feeding roller frame and a first downward feeding roller; the first downward feeding roller frame is fixedly mounted on an inner wall of a support claw of the U-shaped base, the first downward feeding roller is rotatably mounted on the first downward feeding roller frame, and the rotating shaft of the first downward feeding roller is connected to the output rotating shaft of the driving motor through a gear set.

5. The device and working method for pile planting in hard geological concrete sheet piles according to claim 1, characterized in that: The driven downward feeding roller mechanism includes an adjustment box, a spring, a second downward feeding roller frame, an anti-interference plate and a second downward feeding roller; a mounting hole along the thickness direction of the support claw is opened at the position corresponding to the active downward feeding roller mechanism on the other support claw of the U-shaped base, and the adjustment box of the driven downward feeding roller mechanism is slidably installed in the adjustment box body groove of the mounting hole, and the cylinder body of the push cylinder is fixedly installed on the outer wall of the support claw of the U-shaped base, and the piston assembly of the push cylinder passes through the piston groove of the mounting hole and its action end is connected to the adjustment box.

6. The device and working method for pile planting in hard geological concrete sheet piles according to claim 5, characterized in that: One end of the second downward delivery roller frame is slidably installed in the adjustment box, and the other end is rotatably installed with the second downward delivery 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 downward delivery roller frame.

7. The device and working method for pile planting in hard geological concrete sheet piles according to claim 6, characterized in that: An anti-interference plate is arranged at a position close to the second lower feeding roller in the second lower feeding roller frame.

8. The device and working method for pile planting in hard geological concrete sheet piles according to claim 7, characterized in that: Two second lower feeding roller frames and two springs are slidably installed in the regulating box, and each spring is correspondingly arranged at the rear of the second lower feeding roller frame, and the front end of each second lower feeding roller frame is rotatably connected to the second lower feeding roller.

9. The device and working method for pile planting in hard geological concrete sheet piles according to claim 4, characterized in that: The outer surfaces of the first downward feeding roller and the second downward feeding roller are both made of anti-slip material.

10. The device and working method for pile planting in hard geological concrete sheet piles according to claim 3, characterized in that: A first support rod is arranged between the slide block and the telescopic arm to stabilize the sheet pile positioning and lowering mechanism; a second support rod is arranged between the mounting plate and the working platform to stabilize the mounting plate and the foundation cutting device.

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