Old pile pulling-out construction equipment and using method thereof

Abstract

The invention provides old pile pulling construction equipment and a using method thereof, and relates to the technical field of civil engineering. The soil separating device comprises a soil separating sleeve, a turning plate and a limiting hinge, and the soil separating sleeve can be arranged on a pile foundation in a sleeving mode; the turning plate is hinged to the inner wall of the soil separation sleeve through the limiting hinge, and the limiting hinge shaft can limit the side plate face, away from the top of the soil separation sleeve, of the turning plate to be attached to the inner wall of the soil separation sleeve. When the soil separation sleeve moves downwards in the soil body, the plate face of the side, close to the top of the soil separation sleeve, of the turning plate is attached to the inner wall of the soil separation sleeve, and when the soil separation sleeve moves upwards in the soil body, the end, away from the limiting hinge, of the turning plate can rotate downwards around the limiting hinge and cut off connection between the pile foundation and the soil body outside the soil separation sleeve. The pile pulling equipment has the advantages of being low in energy consumption and small in oil consumption during pile pulling.

Description

Technical Field

[0001] The present application relates to the field of civil engineering technology, and in particular to a construction device for removing old piles and a method for using the same. Background Art

[0002] In the construction of foundation and foundation pit engineering of civil engineering projects such as reconstruction and expansion, it is necessary to use old pile removal construction equipment to deal with abandoned pile foundations.

[0003] The existing construction equipment for removing old piles is generally a soil isolation sleeve. When dealing with abandoned pile foundations, construction workers will first put the soil isolation sleeve on the part of the pile foundation exposed in the soil, and then use a vibrating hammer to drive the soil isolation sleeve into the soil, so that the soil isolation sleeve can be used to cut off the connection between the pile foundation inside the soil isolation sleeve and the soil outside the soil isolation sleeve, and finally use pile pulling equipment to pull the pile foundation out of the soil isolation sleeve.

[0004] However, since the soil isolation sleeve cannot cut off the connection between the bottom of the pile foundation and the soil, the pile pulling equipment still needs to apply a large pulling force to the pile foundation to pull the pile foundation out of the soil isolation sleeve, which consumes a lot of energy.

[0005] In view of this, it is necessary to provide an old pile removal construction equipment and a use method thereof. Summary of the invention

[0006] In order to solve the problem that the existing old pile removal construction equipment cannot cut off the connection between the bottom of the old pile foundation and the soil, which causes the pile removal equipment to consume a lot of energy when removing the old pile foundation, the present application provides an old pile removal construction equipment and a method of using it.

[0007] In the first aspect, the present application provides a construction device for removing old piles, which adopts the following technical solution: comprising a soil isolation sleeve, a flap and a limit hinge, wherein the soil isolation sleeve can be sleeved on the pile foundation; The flap is hinged to the inner wall of the soil isolation sleeve via the limit hinge, and the limit hinge shaft can limit the side surface of the flap away from the top of the soil isolation sleeve to fit with the inner wall of the soil isolation sleeve; When the soil isolation sleeve moves downward in the soil, a side plate surface of the flap close to the top of the soil isolation sleeve fits with the inner wall of the soil isolation sleeve. When the soil isolation sleeve moves upward in the soil, an end of the flap away from the limit hinge can rotate downward around the limit hinge and cut off the connection between the pile foundation and the soil outside the soil isolation sleeve.

[0008] By adopting the above technical solution, the user can first insert the soil isolation sleeve into the soil around the pile foundation to be pulled out and make the depth of the end of the flap away from the limit hinge in the soil exceed the depth of the bottom end of the pile foundation, and then use a crane to hang a vibrating hammer to vibrate and pull out the soil isolation sleeve. When the soil isolation sleeve moves upward in the soil, the end of the flap away from the limit hinge can rotate downward around the limit hinge and cut off the connection between the pile foundation and the soil outside the soil isolation sleeve, and the soil isolation sleeve itself will cut off the connection between the soil inside the soil isolation sleeve and the soil outside the soil isolation sleeve, so that the pile pulling equipment can easily pull the soil isolation sleeve and the pile foundation out of the soil, thereby making the pile pulling equipment have low energy consumption and low fuel consumption when pulling piles.

[0009] Specifically, it also includes an elastic member, which is transmission-connected to the flap and can apply a force to the end of the flap away from the limit hinge to rotate downward around the limit hinge.

[0010] By adopting the above technical solution, the elastic member can apply a force to the end of the flap away from the limit hinge to rotate downward around the limit hinge, so as to drive the flap to flip downward.

[0011] Furthermore, a plate receiving groove adapted to the flap is provided on the inner wall of the soil isolation sleeve, and the flap is hinged to the bottom wall of the plate receiving groove via the limit hinge. When the soil isolation sleeve moves downward in the soil, the flap is located in the plate receiving groove.

[0012] By adopting the above technical solution, when the soil isolation sleeve moves downward in the soil body, the flap is located in the plate receiving groove, so as to reduce the resistance encountered by the soil isolation sleeve when being inserted into the soil body.

[0013] Specifically, the soil isolation sleeve includes two splicing units, and the two splicing units can be combined to form the soil isolation sleeve, and each of the splicing units is provided with a connecting block on one end along the vertical direction, and each of the splicing units is provided with a connecting groove corresponding to the connecting block on the other end along the vertical direction, and the top of the connecting groove extends to the top of the corresponding splicing unit and forms an opening, and a connecting screw hole is provided on the bottom wall of the connecting groove, and a fixing hole corresponding to the connecting screw hole is provided on the connecting block, and a bolt can pass through the fixing hole and be screwed with the corresponding connecting screw hole to connect the two splicing units.

[0014] By adopting the above technical solution, the user can first insert the two splicing units into the soil in sequence, and then use bolts to pass through the fixing holes and screw them into the corresponding connecting screw holes to connect the two splicing units to form a soil isolation sleeve, so as to further reduce the resistance that the soil isolation sleeve needs to overcome when inserted into the soil, thereby making it easier for the user to insert the soil isolation sleeve into the soil.

[0015] Furthermore, the soil isolation sleeve also includes a vertical driving member, the splicing unit includes a fixed bent plate and a soil cutting member, the connecting block is arranged on one side plate edge of the fixed bent plate, the connecting groove is arranged on the other side plate edge of the fixed bent plate, and when the two fixed bent plates are combined to form the soil isolation sleeve, a solid soil space is formed between the plate edge of one of the two fixed bent plates and the plate surface of the other of the two fixed bent plates; One side of the soil cutting piece is slidably connected to one of the two fixed bent plates, the other side of the soil cutting piece extends into the solid soil space and can abut against the other of the two fixed bent plates, and a transverse cutting blade is provided on the top of the soil cutting piece, and the vertical driving piece is transmission-connected to the soil cutting piece and can drive the soil cutting piece to drive the transverse cutting blade to move in the vertical direction in the solid soil space.

[0016] By adopting the above technical solution, the user can drive the transverse cutting blade to move vertically in the solid soil space through the vertical driving member and cut the soil in the solid soil space, so as to cut off the connection between the soil inside the soil isolation sleeve and the soil outside the soil isolation sleeve.

[0017] Furthermore, the vertical driving member is a sliding rod, and a sliding groove is provided on a side plate edge of the fixed bent plate close to the solid soil space, the top of the sliding groove extends to the top plate edge of the fixed bent plate and forms an opening, one end of the sliding rod is inserted into the sliding groove through the opening and connected to the soil cutting member, and the other end of the sliding rod is provided with a pin connection hole for connecting to a pulling device.

[0018] By adopting the above technical solution, the user can connect the slide bar to the pulling device through the pin hole, and then drive the slide bar to move through the pulling device.

[0019] Furthermore, the soil isolation sleeve also includes a transverse driving member, and the soil cutting member includes a soil cutting plate and a connecting rod. The transverse cutting blade is provided on the top plate edge of the soil cutting plate, and a vertical cutting blade is provided on one side plate edge of the soil cutting plate. The other side plate edge of the soil cutting plate is connected to one end of the connecting rod, and a receiving groove is provided on the groove wall on the side away from the groove opening in the direction close to or away from the solid soil space. The end of the connecting rod away from the soil cutting plate is inserted into the receiving groove and is detachably connected to the transverse driving member. The transverse driving member can drive the connecting rod to move along the receiving groove. When the vertical cutting blade abuts against the plate surface of the fixed bent plate, the connecting rod is separated from the transverse driving member and enables the sliding rod to drive the connecting rod and the soil cutting plate to move in the vertical direction.

[0020] By adopting the above technical solution, the user can drive the cutting plate on the fixed curved plate on one side of the solid soil cavity to move closer to or away from the fixed curved plate on the other side of the solid soil cavity through the transverse driving member, which not only ensures that the soil partition plate can cut through all the soil in the solid soil cavity, but also enables the user to reduce the resistance encountered by the fixed curved plate when inserted into the soil by retracting the connecting rod into the receiving groove.

[0021] Furthermore, the transverse driving member is a piston rod, and a liquid receiving chamber is provided inside the fixed bent plate. The piston of the piston rod is arranged in the liquid receiving chamber and divides the liquid receiving chamber into a dry chamber and a wet chamber. A through hole leading to the receiving groove is provided on the inner wall of the dry chamber. The end of the piston rod away from its own piston passes through the through hole and extends into the receiving groove and is detachably connected to the connecting rod. A liquid inlet hole leading to the outside is provided on the inner wall of the wet chamber.

[0022] By adopting the above technical solution, the user can inject liquid into the wet chamber through the liquid inlet hole, so that the liquid can drive the piston rod to move, and then drive the connecting rod to extend out of the receiving groove or retract into the receiving groove.

[0023] Furthermore, a liquid hole is provided on the end of the piston rod away from the piston itself, and the liquid hole runs through the entire length direction of the piston rod. When the connecting rod is separated from the piston rod, the liquid in the wet chamber can pass through the liquid hole and enter into the solid soil cavity.

[0024] By adopting the above technical solution, the user can inject anti-friction liquid into the wet cavity through the liquid inlet hole. After the connecting rod and the piston rod are separated, the anti-friction liquid will pass through the liquid through hole into the solid soil cavity and fill the gaps in the soil body cut in the solid soil cavity, so that the friction between the soil isolation sleeve and the soil outside the soil isolation sleeve and the soil inside the soil isolation sleeve and the soil outside the soil isolation sleeve can be reduced by using the anti-friction liquid, thereby further reducing the energy consumption of the pile pulling equipment when pulling piles.

[0025] The second aspect of the present application provides a method for using an old pile removal construction equipment, which adopts the following technical solution: S1. First, a rotary drilling rig is used to drill a circle of holes around the pile foundation to be removed on the soil, and the depth of each of the holes exceeds the depth of the bottom end of the pile foundation. Then, a vibration hammer is used to drive two fixed bent plates into the soil from the positions of the circle of holes, and the top of the flap is lower than the bottom end of the pile foundation. Then, the connecting blocks and the connecting grooves on the two fixed bent plates are connected by bolts, so that the two fixed bent plates are combined to form the soil isolation sleeve; S2, using an infusion pump to inject friction-reducing liquid into the wet cavity from the liquid inlet hole until the friction-reducing liquid drives each piston rod to drive the vertical cutting blades on the corresponding cutting plates to abut against the fixed bent plate; S3, first connect the pulling device to the pin connection hole on the slide bar, then start the pulling device to pull up the slide bar, until the slide bar drives the corresponding transverse cutting blade on the cutting plate to cut the soil in the solid soil space, and in the process of the movement of the slide bar, the friction-reducing liquid is always injected into the wet cavity through the infusion pump; S4. Use a crane to hang a vibrating hammer to vibrate and lift the soil isolation sleeve until the pile foundation is pulled out of the soil.

[0026] By adopting the above technical solution, the pre-drilling process of the rotary drilling rig can facilitate the vibration hammer to drive the fixed bent plate into the soil.

[0027] In summary, the present application includes at least one of the following beneficial technical effects: 1. It includes a soil isolation sleeve, a flap and a limit hinge. The soil isolation sleeve can be sleeved on the pile foundation. The flap is hinged on the inner wall of the soil isolation sleeve via the limit hinge, and the limit hinge shaft can limit the side plate surface of the flap away from the top of the soil isolation sleeve to fit with the inner wall of the soil isolation sleeve. When the soil isolation sleeve moves downward in the soil, the side plate surface of the flap close to the top of the soil isolation sleeve fits with the inner wall of the soil isolation sleeve. When the soil isolation sleeve moves upward in the soil, the end of the flap away from the limit hinge can rotate downward around the limit hinge and cut off the connection between the pile foundation and the soil outside the soil isolation sleeve. The user can first insert the soil isolation sleeve to be removed. The soil around the pile foundation is made so that the depth of the end of the flap away from the limit hinge in the soil exceeds the depth of the bottom end of the pile foundation, and then a vibrating hammer is used to vibrate and pull up the soil isolation sleeve. When the soil isolation sleeve moves upward in the soil, the end of the flap away from the limit hinge can rotate downward around the limit hinge and cut off the connection between the pile foundation and the soil outside the soil isolation sleeve, and the soil isolation sleeve itself will cut off the connection between the soil inside the soil isolation sleeve and the soil outside the soil isolation sleeve, so that the pile pulling equipment can easily pull the soil isolation sleeve and the pile foundation out of the soil, thereby making the pile pulling equipment have low energy consumption and low fuel consumption when pulling piles; 2. The soil isolation sleeve also includes a transverse driving member, the soil cutting member includes a soil cutting plate and a connecting rod, a transverse cutting blade is provided on the top plate edge of the soil cutting plate, a vertical cutting blade is provided on one side plate edge of the soil cutting plate, and the other side plate edge of the soil cutting plate is connected to one end of the connecting rod, and a receiving groove is opened on the groove wall on the side away from the groove in the direction close to or away from the solid soil space, and the end of the connecting rod away from the soil cutting plate is inserted into the receiving groove and is detachably connected to the transverse driving member, and the transverse driving member can drive the connecting rod to move along the receiving groove. When the vertical cutting blade abuts against the plate surface of the fixed bent plate, the connecting rod is separated from the transverse driving member and the sliding rod can drive the connecting rod and the soil cutting plate to move in the vertical direction, so that the user can drive the soil cutting plate on the fixed bent plate on one side in the solid soil space through the transverse driving member to approach or move away from the fixed bent plate on the other side in the solid soil space, which not only ensures that the soil isolation plate can cut all the soil in the solid soil space, but also enables the user to reduce the resistance encountered when the fixed bent plate is inserted into the soil by retracting the connecting rod into the receiving groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a three-dimensional diagram of an old pile extraction construction equipment of the present application; Figure 2 is along Figure 1 A schematic cross-sectional view taken along the center axis in the length direction of the middle slide bar, wherein the pile foundation is not shown; Figure 3 yes Figure 2 A schematic enlarged view of region A showing the piston rod; Figure 4 is along Figure 2 A schematic cross-sectional view of the piston rod taken along the horizontal center axis, wherein the pile foundation is not shown.

[0029] Figure numerals: 1. Soil isolation sleeve; 11. Splicing unit; 111. Connecting block; 112. Fixed bent plate; 1121. Wet chamber; 1122. Liquid inlet hole; 113. Soil cutting plate; 1131. Horizontal cutting blade; 1132. Vertical cutting blade; 114. Connecting rod; 1141. T-shaped slider; 1142. T-shaped slot; 115. Abutment slot; 12. Sliding rod; 121. Pin hole; 13. Solid soil space; 14. Piston rod; 141. Liquid hole; 15. Plate collecting slot; 2. Flap; 3. Limit hinge; 31. Torsion spring; 4. Pile foundation. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-4 For further explanation: See also Figure 1 , Figure 2 and Figure 3 In one embodiment, an old pile extraction construction equipment is used to extract a pile foundation 4 with a square cross-section, including a soil isolation sleeve 1, two flaps 2 and two limit hinges 3. The soil isolation sleeve 1 includes two splicing units 11, two sliding rods 12 and two piston rods 14. Each splicing unit 11 includes a fixed bent plate 112, a soil cutting plate 113 and a connecting rod 114. A connecting block 111 is provided on one side plate edge of each fixed bent plate 112, and a connecting groove is provided on the other side plate edge of each fixed bent plate 112. The top of each connecting groove extends to the top of the corresponding fixed bent plate 112 and forms an opening. A connecting screw hole is provided on the bottom wall of each connecting groove, and a fixing hole corresponding to the connecting screw hole is provided on each connecting block 111, so that a user can connect the two fixed bent plates 112 by respectively passing two screws through the two fixing holes and screwing them into the corresponding connecting screw holes.

[0031] See also Figure 1 , Figure 2 and Figure 3A solid soil space 13 is formed between the inner plate surface of each fixed curved plate 112 and the plate edge on one side opposite to the inner plate surface of another fixed curved plate 112. A soil cutting plate 113 and a connecting rod 114 are provided in each solid soil space 13. The plate surface of the soil cutting plate 113 is arranged in the vertical direction. Horizontal cutting blades 1131 are provided on the upper and lower plate edges of the soil cutting plate 113. A vertical cutting blade 1132 is provided on one side of the soil cutting plate 113 along the horizontal direction. The soil cutting plate 113 along the other side of the horizontal direction is provided with a connecting rod 114. The plate edge is fixedly connected to one end of the connecting rod 114, and a slide groove is provided on the plate edge of the fixed bent plate 112 on one side close to the solid soil space 13. The top of the slide groove extends to the top plate edge of the fixed bent plate 112 and forms an opening, and the connecting block 111 is connected to the groove edges on both sides of the slide groove to form a limiting hole that can limit the horizontal movement of the slide rod 12. One end of the slide rod 12 is inserted into the slide groove through the opening, and the other end of the slide rod 12 is provided with a pin connection hole 121 for connecting to a pulling device such as a hydraulic cylinder.

[0032] See also Figure 3 and Figure 4 A receiving groove is provided on the groove wall on one side of the slide groove away from the groove opening in the direction close to or away from the solid soil space 13, a liquid receiving chamber is provided inside the fixed bent plate 112, the piston of the piston rod 14 is arranged in the liquid receiving chamber and divides the liquid receiving chamber into a wet chamber 1121 and a dry chamber, a liquid inlet hole 1122 leading to the outside is provided on the inner wall of the wet chamber 1121, and an end of the liquid inlet hole 1122 away from the wet chamber 1121 is provided at the top of the fixed bent plate 112; a through hole leading to the receiving groove is provided on the inner wall of the dry chamber, an end of the piston rod 14 away from its own piston passes through the through hole and extends into the receiving groove and a slot is provided at the end in the vertical direction, the top of the slot forms an opening and the cross section is T-shaped, the end of the connecting rod 114 away from the soil cutting plate 113 is inserted into the receiving groove and is provided with a T-shaped sliding block 1141 adapted to the slot of the piston rod 14, the T-shaped sliding block 1141 is inserted into the slot of the piston rod 14 and can slide along the slot.

[0033] See also Figure 2 and Figure 3 A T-slot 1142 is provided on the rod body of the connecting rod 114 along the length direction of the accommodating groove, and an opening is formed on the T-slot 1142 at one end away from the accommodating groove, and a slider matched with the T-slot 1142 is provided on the end of the sliding rod 12 away from the pin connection hole 121, and the slider is inserted into the T-slot 1142 and can slide along the T-slot 1142; a liquid through hole 141 is also provided on the end of the piston rod 14 away from its own piston, and the liquid through hole 141 runs through the entire length direction of the piston rod 14, so that the liquid in the wet chamber 1121 can pass through the liquid through hole 141 and enter the solid soil space 13 when the T-shaped slider 1141 of the connecting rod 114 leaves the slot of the piston rod 14.

[0034] See also Figure 2 and Figure 3 A plate receiving groove 15 is also provided on the inner plate surface of the two fixed bent plates 112, and a flap 2 is hinged on the bottom groove wall of each plate receiving groove 15 through a limit hinge 3. The limit hinge 3 can adopt a 90-degree limit hinge 3 to limit the side of the flap 2 away from the top of the soil isolation sleeve 1 to tilt downward along the horizontal plane; an elastic member is also provided on each limit hinge 3, and the elastic member is a torsion spring 31, so that a force can be applied to the flap 2 through the torsion spring 31, so that the end of the flap 2 away from the limit hinge 3 can rotate downward around the limit hinge 3, so that the user can first combine the two fixed bent plates 112 to form the soil isolation sleeve 1 is inserted into the soil around the pile foundation 4 to be pulled out and the depth of the end of the flap 2 away from the limit hinge 3 in the soil exceeds the depth of the bottom end of the pile foundation 4, and then the vibration hammer is hoisted by a crane to vibrate and pull up the soil isolation sleeve 1. When the soil isolation sleeve 1 moves upward in the soil, the end of the flap 2 away from the limit hinge 3 can rotate downward around the limit hinge 3 and cut off the connection between the pile foundation 4 and the soil outside the soil isolation sleeve 1, and the soil isolation sleeve 1 itself will cut off the connection between the soil inside the soil isolation sleeve 1 and the soil outside the soil isolation sleeve 1, so that the pile pulling equipment can easily pull the soil isolation sleeve 1 and the pile foundation 4 out of the soil, thereby making the pile pulling equipment have low energy consumption and low fuel consumption when pulling piles.

[0035] Preferably, a vertical groove can be provided on the inner plate surface of each fixed bent plate 112 along the vertical direction, and the vertical cutting blade 1132 of the cutting plate 113 can be inserted into the corresponding vertical groove and fit with the inner wall of the vertical groove.

[0036] The use process of the old pile removal construction equipment provided in this application is as follows: The user can first use a pile driving device such as a vibrating hammer to insert the two fixed bent plates 112 into the soil around the to-be-pulled pile foundation 4 in sequence, and before insertion, retract the two flaps 2 into the corresponding plate receiving grooves 15 and retract the two connecting rods 114 into the corresponding receiving grooves, so as to minimize the contact area between the bottom of the fixed bent plate 112 and the soil, thereby increasing the pressure applied to the soil by the fixed bent plate 112 when subjected to the same magnitude of downward pressure, making it easier to insert the fixed bent plate 112 into the soil; then, the two splicing units 11 are connected by bolts passing through the fixing holes and screwing them into the corresponding connecting screw holes. The soil isolation sleeve 1 is formed, and then a friction-reducing liquid such as water is injected into the wet cavity 1121 from two liquid inlet holes 1122 by using an infusion pump or other infusion equipment. The friction-reducing liquid first drives the piston rod 14 to move and drives the connecting rod 114 to extend out of the receiving groove, so that the vertical cutting blades 1132 on the two cutting plates 113 can move in the horizontal direction and cut the soil in the solid soil space 13; and because the slide bar 12 is limited by the limiting hole, when the connecting rod 114 extends out of the receiving groove, the slider on the slide bar 12 will slide from the opening between the T-slot 1142 on the connecting rod 114 and the cutting plate 113 into the T-slot 1142; After the two vertical cutting blades 1132 are in contact with the corresponding plate surfaces of the fixed bent plates 112, the opening of the slot on the piston rod 14 will extend from the receiving slot, so that the user can drive the connecting rod 114 and the cutting plate 113 to move upward by pulling up the sliding rod 12, and the T-shaped block of the connecting rod 114 will also leave the slot from the opening at the top of the slot, so that the vertical cutting blade 1132 at the top of the cutting plate 113 can move up in the vertical direction and cut the soil in the solid soil space 13, and the friction-reducing fluid in the wet chamber 1121 can pass through the liquid through hole 141 into the solid soil space 13 and fill the gap cut in the soil at the solid soil space 13, thereby These friction-reducing fluids can be used to reduce the friction between the soil isolation sleeve 1 and the soil outside the soil isolation sleeve 1, as well as the soil inside the soil isolation sleeve 1 and the soil outside the soil isolation sleeve 1, thereby further reducing the energy consumption of the pile pulling equipment during pile pulling. When the two cutting plates 113 are both moved up to the outside of the soil and the soil at the corresponding solid soil gaps 13 is completely cut, the user can use a crane to hang a vibrating hammer to vibrate and pull up the soil isolation sleeve 1. When the soil isolation sleeve 1 moves upward in the soil, the torsion spring 31 will drive the end of the flap 2 away from the limit hinge 3 to rotate downward around the limit hinge 3 and cut off the connection between the pile foundation 4 and the soil outside the soil isolation sleeve 1, so that the pile foundation 4 will not detach from the port below the soil isolation sleeve 1.

[0037] Based on the structure of the above-mentioned old pile removal construction equipment, the second aspect of the present application further provides a method for using the old pile removal construction equipment, which is implemented using the above-mentioned old pile removal construction equipment. The method specifically includes: S1. First, a rotary drilling rig is used to drill a circle of holes around the pile foundation 4 to be removed in the soil, and the depth of each hole exceeds the depth of the bottom end of the pile foundation 4. Then, a vibrating hammer is used to drive two fixed bent plates 112 into the soil from the positions of the circle of holes, and the top of the flap 2 is lower than the bottom end of the pile foundation 4. Then, the connecting blocks 111 and the connecting grooves on the two fixed bent plates 112 are connected by bolts, so that the two fixed bent plates 112 are combined to form a soil isolation sleeve 1; S2, use an infusion pump to inject the friction-reducing liquid into the wet chamber 1121 from the liquid inlet 1122, until the friction-reducing liquid drives each piston rod 14 to drive the vertical cutting blades 1132 on the corresponding cutting plates 113 to abut against the fixed bent plate 112; S3, first connect the pulling device to the pin hole 121 on the slide bar 12, then start the pulling device to pull up the slide bar 12, until the slide bar 12 drives the corresponding cross cutting blade 1131 on the cutting plate 113 to cut the soil in the solid soil space 13, and inject the friction reducing liquid into the wet cavity 1121 through the infusion pump during the movement of the slide bar 12; S4. Use a crane to hang the vibrating hammer and vibrate to lift the soil isolation sleeve 1 until the pile foundation 4 is pulled out of the soil.

[0038] Since the method for using the old pile removal construction equipment of the present application is implemented by adopting the above-mentioned old pile removal construction equipment, it can also have all the technical effects of the above-mentioned old pile removal construction equipment, especially the pre-drilling process of the rotary drilling rig can facilitate the vibratory hammer to drive the fixed bent plate 112 into the soil, thereby reducing the noise and dust generated when the vibratory hammer hits the fixed bent plate 112.

[0039] It should be noted that the above-mentioned rotary drilling rig can use the Sany Heavy Industry SR280R model with strong stability and maneuverability. It is equipped with a maximum diameter drill rod of 95 cm, which can easily cope with most common specifications of aging piles; and the above-mentioned infusion pump can use the ZLJ5141THB-E electric hydraulic pump station produced by Zoomlion Heavy Industry Science and Technology Co., Ltd. with a corresponding high-pressure hose system to ensure the smooth delivery of the friction-reducing fluid; before the rotary drilling rig operates, geological radar can also be used to detect the distribution of underground pipelines to ensure that there are no power cables or other important facilities in the soil before starting the operation.

[0040] The implementation principle of the old pile removal construction equipment described in this application is: The user can first use a pile driving device such as a vibrating hammer to insert the two fixed bent plates 112 into the soil around the to-be-pulled pile foundation 4 in sequence, and before insertion, retract the two flaps 2 into the corresponding plate receiving grooves 15 and retract the two connecting rods 114 into the corresponding receiving grooves, so as to minimize the contact area between the bottom of the fixed bent plate 112 and the soil, thereby increasing the pressure applied to the soil by the fixed bent plate 112 when subjected to the same magnitude of downward pressure, making it easier to insert the fixed bent plate 112 into the soil; then, the two splicing units 11 are connected by bolts passing through the fixing holes and screwing them into the corresponding connecting screw holes. The soil isolation sleeve 1 is formed, and then a friction-reducing liquid such as water is injected into the wet cavity 1121 from two liquid inlet holes 1122 by using an infusion pump or other infusion equipment. The friction-reducing liquid first drives the piston rod 14 to move and drives the connecting rod 114 to extend out of the receiving groove, so that the vertical cutting blades 1132 on the two cutting plates 113 can move in the horizontal direction and cut the soil in the solid soil space 13; and because the slide bar 12 is limited by the limiting hole, when the connecting rod 114 extends out of the receiving groove, the slider on the slide bar 12 will slide from the opening between the T-slot 1142 on the connecting rod 114 and the cutting plate 113 into the T-slot 1142; After the two vertical cutting blades 1132 are in contact with the corresponding plate surfaces of the fixed bent plates 112, the opening of the slot on the piston rod 14 will extend from the accommodating slot, so that the user can drive the connecting rod 114 and the cutting plate 113 to move upward by pulling up the sliding rod 12, and the T-shaped block of the connecting rod 114 will also leave the slot from the opening at the top of the slot, so that the vertical cutting blade 1132 on the top of the cutting plate 113 can move up in the vertical direction and cut the soil in the solid soil space 13, and the friction-reducing fluid in the wet chamber 1121 can pass through the liquid through hole 141 into the solid soil space 13 and fill the gap in the soil at the solid soil space 13, so that the friction-reducing fluid can be used to reduce the friction between the soil isolation sleeve 1 and the soil outside the soil isolation sleeve 1 and the soil inside the soil isolation sleeve 1 The friction between the soil body and the soil outside the soil isolation sleeve 1 further reduces the energy consumption of the pile pulling equipment when pulling out the pile; when the two cutting plates 113 are moved up to the outside of the soil body and the soil at the corresponding solid soil space 13 is completely cut, the user can use a crane to hang a vibrating hammer to vibrate and pull up the soil isolation sleeve 1. When the soil isolation sleeve 1 moves upward in the soil, the torsion spring 31 will drive the end of the flap 2 away from the limit hinge 3 to rotate downward around the limit hinge 3 and cut off the connection between the pile foundation 4 and the soil outside the soil isolation sleeve 1, and the soil isolation sleeve 1 itself will cut off the connection between the soil inside the soil isolation sleeve 1 and the soil outside the soil isolation sleeve 1, so that the pile pulling equipment can easily pull the soil isolation sleeve 1 and the pile foundation 4 out of the soil, thereby making the pile pulling equipment have low energy consumption and low fuel consumption when pulling out the pile.

[0041] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An old pile removal construction equipment, used for removing pile foundations (4) driven into soil, characterized in that: It comprises a soil isolation sleeve (1), a flap (2) and a limit hinge (3), wherein the soil isolation sleeve (1) can be sleeved on the pile foundation (4); The flap (2) is hinged to the inner wall of the soil isolation sleeve (1) via the limit hinge (3), and the limit hinge shaft can limit the side surface of the flap (2) away from the top of the soil isolation sleeve (1) to fit with the inner wall of the soil isolation sleeve (1); When the soil isolation sleeve (1) moves downward in the soil, a side plate surface of the flap (2) close to the top of the soil isolation sleeve (1) fits with the inner wall of the soil isolation sleeve (1); when the soil isolation sleeve (1) moves upward in the soil, an end of the flap (2) away from the limit hinge (3) can rotate downward around the limit hinge (3) and cut off the connection between the pile foundation (4) and the soil outside the soil isolation sleeve (1).

2. The old pile removal construction equipment according to claim 1 is characterized by: It also comprises an elastic member, which is in transmission connection with the flap (2) and is capable of applying a force to the end of the flap (2) away from the limit hinge (3) to rotate downward around the limit hinge (3).

3. The old pile removal construction equipment according to claim 2 is characterized by: The inner wall of the soil isolation sleeve (1) is provided with a plate receiving groove (15) adapted to the flap (2); the flap (2) is hinged to the bottom wall of the plate receiving groove (15) via the limit hinge (3); when the soil isolation sleeve (1) moves downward in the soil, the flap (2) is located in the plate receiving groove (15).

4. The old pile removal construction equipment according to claim 1 is characterized by: The soil isolation sleeve (1) comprises two splicing units (11), and the two splicing units (11) can be combined to form the soil isolation sleeve (1), and each of the splicing units (11) is provided with a connecting block (111) at one end along the vertical direction, and each of the splicing units (11) is provided with a connecting groove corresponding to the connecting block (111) at the other end along the vertical direction, and the top of the connecting groove extends to the top of the corresponding splicing unit (11) and forms an opening, and a connecting screw hole is provided on the bottom wall of the connecting groove, and a fixing hole corresponding to the connecting screw hole is provided on the connecting block (111), and a bolt can pass through the fixing hole and be screwed with the corresponding connecting screw hole to connect the two splicing units (11).

5. The old pile removal construction equipment according to claim 4 is characterized in that: The soil isolation sleeve (1) further comprises a vertical driving member, the splicing unit (11) comprises a fixed bent plate (112) and a soil cutting member, the connecting block (111) is arranged on one side plate edge of the fixed bent plate (112), the connecting groove is arranged on the other side plate edge of the fixed bent plate (112), and when the two fixed bent plates (112) are combined to form the soil isolation sleeve (1), a solid soil space (13) is formed between the plate edge of one of the two fixed bent plates (112) and the plate surface of the other of the two fixed bent plates (112); One side of the soil cutting piece is slidably connected to one of the two fixed curved plates (112), and the other side of the soil cutting piece extends into the solid soil space (13) and can abut against the other of the two fixed curved plates (112), and a transverse cutting blade (1131) is provided on the top of the soil cutting piece, and the vertical driving piece is transmission-connected to the soil cutting piece and can drive the soil cutting piece to drive the transverse cutting blade (1131) to move in the vertical direction in the solid soil space (13).

6. The old pile removal construction equipment according to claim 5 is characterized by: The vertical driving member is a slide rod (12), and a slide groove is provided on a side plate edge of the fixed bent plate (112) close to the solid soil space (13). The top end of the slide groove extends to the top plate edge of the fixed bent plate (112) and forms an opening. One end of the slide rod (12) passes through the opening and is inserted into the slide groove and connected to the soil cutting member. The other end of the slide rod (12) is provided with a pin connection hole (121) for connecting to a pulling device.

7. The old pile removal construction equipment according to claim 6 is characterized by: The soil isolation sleeve (1) also includes a transverse driving member, the soil cutting member includes a soil cutting plate (113) and a connecting rod (114), the top plate edge of the soil cutting plate (113) is provided with the transverse cutting blade (1131), the side plate edge of the soil cutting plate (113) is provided with a vertical cutting blade (1132), the other side plate edge of the soil cutting plate (113) is connected to one end of the connecting rod (114), and a receiving groove is provided on the groove wall on one side away from the groove opening in a direction close to or away from the solid soil space (13). The end of the connecting rod (114) away from the cutting plate (113) is inserted into the receiving groove and is detachably connected to the transverse driving member. The transverse driving member can drive the connecting rod (114) to move along the receiving groove. When the vertical cutting blade (1132) abuts against the plate surface of the fixed bent plate (112), the connecting rod (114) is separated from the transverse driving member and enables the sliding rod (12) to drive the connecting rod (114) and the cutting plate (113) to move in the vertical direction.

8. The old pile removal construction equipment according to claim 7 is characterized by: The transverse driving member is a piston rod (14), a liquid receiving chamber is provided inside the fixed bent plate (112), a piston of the piston rod (14) is provided in the liquid receiving chamber and divides the liquid receiving chamber into a dry chamber and a wet chamber (1121), a through hole leading to the receiving groove is provided on the inner wall of the dry chamber, an end of the piston rod (14) away from its own piston passes through the through hole and extends into the receiving groove and is detachably connected to the connecting rod (114), and a liquid inlet hole (1122) leading to the outside is provided on the inner wall of the wet chamber (1121).

9. The old pile removal construction equipment according to claim 8, characterized in that: A liquid through hole (141) is provided on the end of the piston rod (14) away from the piston itself. The liquid through hole (141) runs through the entire length direction of the piston rod (14). When the connecting rod (114) is separated from the piston rod (14), the liquid in the wet chamber (1121) can pass through the liquid through hole (141) and enter into the solid soil space (13).

10. A method for using an old pile removal construction equipment, implemented by using the old pile removal construction equipment according to claim 9, characterized in that: include: S1. First, a rotary drilling rig is used to drill a circle of holes in the soil around the pile foundation (4) to be removed, and the depth of each of the holes exceeds the depth of the bottom of the pile foundation (4). Then, a vibrating hammer is used to drive two fixed bent plates (112) into the soil from the positions of the circle of holes, and the top of the flap (2) is lower than the bottom of the pile foundation (4). Then, the connecting blocks (111) and the connecting grooves on the two fixed bent plates (112) are connected by bolts, so that the two fixed bent plates (112) are combined to form the soil isolation sleeve (1); S2, using an infusion pump to inject friction-reducing liquid into the wet chamber (1121) from the liquid inlet hole (1122), until the friction-reducing liquid drives each piston rod (14) to drive the vertical cutting blades (1132) on the corresponding cutting plates (113) to abut against the fixed bent plate (112); S3, first connect the pulling device to the pin hole (121) on the slide bar (12), then start the pulling device to pull up the slide bar (12), until the slide bar (12) drives the corresponding transverse cutting blade (1131) on the cutting plate (113) to cut the soil in the solid soil space (13), and in the process of the movement of the slide bar (12), the friction-reducing liquid is always injected into the wet cavity (1121) through the infusion pump; S4, using a crane to suspend a vibrating hammer to vibrate and lift the soil isolation sleeve (1) until the pile foundation (4) is pulled out of the soil.

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