A large diameter pipe pile rapid implantation device and method

Abstract

A large diameter pipe pile rapid implantation device and method, relates to pile foundation construction device and method, including a pile frame, a power head, a spiral drill rod, and a telescopic transmission rod, wherein at least one axial positioning connection structure is provided between the telescopic transmission rod and the spiral drill rod; a hammer frame is provided on the upper part of the spiral drill rod, a chuck and a support sleeve are provided on the hammer frame, a jacking seat is installed on the upper part of the support sleeve through a bearing, a hammer body is provided on the outer sleeve of the support sleeve, a lifting sleeve is provided on the upper part of the hammer body, a spiral lifting slide rail is provided on the inner wall of the lifting sleeve, a lifting arm is provided on the lifting seat, a telescopic transmission rod is key-connected with the lifting seat, and the telescopic transmission rod passes through the transmission rod jack and is connected to the power head. The above components cooperate with each other to quickly implant large diameter pipe piles into the ground. It has the advantages of simple structure, convenient use, low manufacturing cost, low use cost, etc.

Description

Technical Field

[0001] The invention relates to a pile foundation construction method and equipment, in particular to a large-diameter prestressed pipe pile construction method and equipment. Background Art

[0002] At present, hammering and static pressure are the most commonly used construction methods in the construction of prestressed pipe piles in the field of foundation construction. The hammering equipment is composed of a crawler or walking pile frame as the main machine, and a diesel hammer or hydraulic hammer is hung on it. The pile driver uses a counterweight to achieve the reaction force required for pile pressing, and uses static pressure to press the pile into the soil layer. The equipment is generally bulky, with high transfer costs and poor penetration capacity. They are usually suitable for pipe piles below 600. For large-diameter prestressed pipe pile construction, the implantation method is generally used more internationally. For example, we have introduced the Japanese mid-excavation method in recent years, but it has not been widely promoted in my country due to cost and technical reasons. With the rapid development of the construction industry, the bearing capacity requirements of piles have become increasingly larger. As a result, pipe piles have also begun to develop in the direction of large diameters. However, due to the limitation of the hammer's striking ability, the construction of large-diameter pipe piles has become more difficult. Static pressure is even more difficult to complete. Although there are existing imported construction technologies, the cost of imported equipment is high and the efficiency is low. For example, the construction of piles by the middle excavation method requires the drilling tool to be disassembled and assembled once for each pile. The whole process is not only inefficient but also dangerous and complicated. The drilling tool is also relatively complicated. For example, if it needs to be connected to the hydraulic system or the shotcrete system, leakage may occur due to problems such as manufacturing accuracy. These will seriously hinder the promotion and development of large-diameter pipe piles. Summary of the invention

[0003] The purpose of the present invention is to solve the above-mentioned deficiencies of the prior art and to provide a large-diameter pipe pile rapid implantation device and method which has a simple structure, is easy to use, has low manufacturing cost and low use cost.

[0004] The technical solution adopted by the present invention to solve the above-mentioned deficiencies in the prior art is:

[0005] A large-diameter pipe pile rapid implantation device comprises a pile frame, a power head and a spiral drill rod, the power head is installed on the pile frame, and is characterized in that a telescopic transmission rod is arranged in the spiral drill rod, and at least one axial positioning connection structure is arranged between the telescopic transmission rod and the spiral drill rod; a hammer frame matching with the pipe pile is sleeved on the upper part of the spiral drill rod, a chuck matching with the upper part of the spiral drill rod is arranged on the hammer frame, a support sleeve is arranged on the upper end of the hammer frame, a jacking seat is installed on the upper part of the support sleeve through a bearing, a transmission rod insertion hole is arranged in the center of the jacking seat, a hammer body matching with the upper end of the hammer frame is arranged on the outer sleeve of the support sleeve, a lifting sleeve is arranged on the upper part of the hammer body, at least one section of spiral lifting slide rail is arranged on the inner wall of the lifting sleeve, a lifting arm matching with the spiral lifting slide rail is arranged on the lifting seat, the telescopic transmission rod is key-connected or fixedly connected with the lifting seat, and the telescopic transmission rod is connected to the power head through the transmission rod insertion hole.

[0006] The structure of the telescopic transmission rod described in the present invention is: an axial installation cavity with an open upper end is provided in the spiral drill rod, the telescopic transmission rod can be installed in the axial installation cavity axially and freely slide, and mutually matching positioning connection structures are respectively provided between the upper and lower parts of the telescopic transmission rod and the upper part of the spiral drill rod.

[0007] A mutually cooperating positive locking and reverse unlocking positioning connection structure is provided between the upper part of the telescopic transmission rod and the upper part of the auger rod in the present invention; a mutually cooperating positive locking and reverse unlocking positioning connection structure is provided between the lower part of the telescopic transmission rod and the upper part of the auger rod.

[0008] The positioning connection structure described in the present invention is: a positioning block is provided on the inner side wall of the auger rod, an axial slide groove matching with the positioning block is provided on the outer wall of the telescopic transmission rod, and a positioning groove matching with the positioning block is provided on the outer wall of the telescopic transmission rod on one side of the axial slide groove. When the telescopic transmission rod rotates forward, the positioning block can slide into the positioning groove, the telescopic transmission rod and the auger rod are axially positioned, and the telescopic transmission rod drives the auger rod to rotate forward; when the telescopic transmission rod rotates reversely, the positioning block can slide out of the positioning groove and slide into the axial slide groove, and the telescopic transmission rod and the auger rod can slide relative to each other axially. A positioning block is provided on the inner side wall of the upper part of the auger rod, and an upper positioning groove and a lower positioning groove matching with the positioning block are provided on the outer walls of the upper and lower parts of the telescopic transmission rod, respectively.

[0009] The hammer frame described in the present invention is cylindrical or cubic, with a mounting hole in the center, and the hammer frame is sleeved on the upper part of the auger rod through the mounting hole; a chuck for clamping the upper part of the auger rod is arranged in the mounting hole.

[0010] The upper end of the auger rod described in the present invention is located in the support sleeve. The telescopic transmission rod is inserted into the support sleeve from the upper end of the auger rod, and the telescopic transmission rod and the auger rod can rotate freely in the support sleeve. The lower end of the support sleeve is inserted into the installation through hole, and a supporting convex ring is provided on the outer wall of the lower part of the support sleeve, and a limiting convex ring cooperating with the supporting convex ring is provided on the inner wall of the installation through hole of the hammer frame below the supporting convex ring, and a buffering limiting convex ring cooperating with the limiting convex ring is provided on the outer wall of the support sleeve below the limiting convex ring, and a buffer zone is provided between the buffering limiting convex ring and the limiting convex ring. When the hammer body hammers the hammer frame downward, the hammer frame presses down and moves downward with the pipe pile, and the limiting convex ring can slide downward in the buffer zone. After the limiting convex ring moves downward until it contacts the buffering limiting convex ring, it can drive the support sleeve downward. The lower end face of the hammer body hammers on the upper end face of the hammer frame outside the supporting convex ring.

[0011] The inner wall of the lifting sleeve described in the present invention is evenly distributed with at least two sections of spiral lifting slide rails on the circumference, and the high end and the low end of the two adjacent sections of the spiral lifting slide rails are axially overlapped (the high end of one section of the spiral lifting slide rail is located directly above the low end of the other section of the spiral lifting slide rail); a lifting arm is provided on the lifting seat at a position opposite to each spiral lifting slide rail to cooperate with it (sliding on the lower side). Furthermore, a lifting pulley is provided on the lifting arm to cooperate with the spiral lifting slide rail (lower side); the lifting pulley can roll on the lower side of the spiral lifting slide rail to reduce friction resistance. The axial distance between the high end and the low end of a section of the spiral lifting slide rail is greater than the distance that the hammer body is lifted by the lifting arm.

[0012] The inner wall of the transmission rod insertion hole of the lifting seat described in the present invention is provided with a transmission key slot which is open at the upper end or passes through from top to bottom, and the upper outer wall of the telescopic transmission rod is provided with a transmission key which matches the transmission key slot. The transmission key can be inserted into the transmission key slot from the upper end of the transmission key slot to fix the telescopic transmission rod and the lifting seat circumferentially; the upper end of the transmission key slot is provided with a guiding inclined surface to facilitate the insertion of the transmission key into the transmission key slot.

[0013] The outer wall of the telescopic transmission rod in the present invention is provided with a transmission keyway which passes through from top to bottom, and the inner wall of the transmission rod insertion hole is provided with a transmission key which matches with the transmission keyway; the lifting seat is positioned circumferentially with the telescopic transmission rod through the cooperation of the transmission key and the transmission keyway.

[0014] The left and / or right sides of the lower end of the auger rod described in the present invention are hinged with expansion blades; the upper and lower ends of the auger rod on the upper and lower sides of the hinge shaft connecting the expansion blade to the auger rod are respectively provided with upper limiting bosses and lower limiting bosses that cooperate with the expansion blades. After the upper limiting boss blocks the expansion blade from rotating upward around the hinge shaft, it tilts upward from the hinge shaft to the tip; after the lower limiting boss blocks the expansion blade (naturally drooping) from rotating downward around the hinge shaft, it tilts vertically downward or toward the axis of the auger rod from the hinge shaft to the tip; the expansion blade is in the shape of a pin column with a tip, and when the expansion blade droops naturally, its entirety is within the radial range of the auger rod (the distance between any point on the expansion blade and the axis of the auger rod is less than the outer diameter of the auger rod), and after the expansion blade rotates upward around the hinge shaft, its tip extends out of the radial range of the auger rod (the distance between the tip of the expansion blade and the axis of the auger rod is greater than the outer diameter of the auger rod). The soil under the first section of the pipe pile can be stirred and loosened, and large-diameter pipe piles are easier to implant.

[0015] The pile frame of the present invention is provided with a vertical guide rail, and the power head, hammer frame and hammer body are respectively provided with guide slide seats matched with the guide rail. The guide slide seats limit the power head, hammer frame and hammer body to move up and down along the pile frame.

[0016] The power head and the hammer frame and / or the hammer body described in the present invention are provided with a fixed connection device, which is more convenient to install and use. The fixed connection device can be a pin and a cable connected by binding, or an electromagnetic lock, or a hook and a hook notch.

[0017] The length of the auger rod and the telescopic transmission rod described in the present invention is more than twice the length of the pipe pile. The height of the pile frame is greater than the sum of the length of the auger rod, the length of the pipe pile and the height of the power head component.

[0018] A method for quickly implanting large-diameter pipe piles, characterized by comprising the following steps:

[0019] Step 1: Place the first pipe pile vertically at the pile position;

[0020] Step 2: Insert the auger rod of the large-diameter pile quick implantation equipment into the pile hole from the top of the pile. The power head drives the telescopic transmission rod and the auger rod to rotate and drill into the ground until the hammer frame is placed on the upper end of the pile.

[0021] Step 3: The auger rod continues to rotate and drills into the ground, and the hammer repeatedly hammers the upper end of the pipe pile, hammering it into the ground to a height above the ground where the first pipe pile can be connected;

[0022] Step 4: Lift the telescopic transmission rod and the auger rod to connect the second pipe pile to the first pipe pile;

[0023] Step 5: Insert the auger rod of the large-diameter pipe pile rapid implantation equipment into the pipe pile hole from the top of the second pipe pile, and place the hammer frame on the upper end of the second pipe pile. The power head drives the telescopic transmission rod and the auger rod to rotate, and the hammer repeatedly hammers the upper end of the second pipe pile and hammers it into the ground to a height above the ground where the second pipe pile can be connected.

[0024] Step 6: Lift the auger rod and connect the third pipe pile to the second pipe pile;

[0025] Step 7: Insert the auger rod of the large-diameter pipe pile rapid implantation equipment into the pipe pile hole from the top of the third pipe pile, and place the hammer frame on the upper end of the third pipe pile. The chuck on the hammer frame clamps the upper part of the auger rod; open the axial positioning connection structure between the telescopic transmission rod and the auger rod, lift the power head, drive the telescopic transmission rod to slide upward relative to the auger rod to a height of two pipe piles, and use the axial positioning connection structure to axially lock the telescopic transmission rod and the auger rod;

[0026] Step 8, open the chuck, release the auger rod, and the power head moves down until the auger rod contacts the ground under the first pipe pile. The power head drives the telescopic transmission rod and the auger rod to rotate and drill into the ground until the telescopic transmission rod moves down to the transmission key inserted into the transmission key slot, and the rotation of the telescopic transmission rod drives the jacking seat to rotate;

[0027] Step 9: The auger rod continues to rotate and drills into the ground, and the hammer repeatedly hammers the upper end of the third pipe pile and hammers it into the ground until the third pipe pile is above the ground and the pile can be connected;

[0028] Step 10: Lift the power head to the upper part of the auger rod and insert it into the chuck on the hammer frame. The chuck clamps the upper part of the auger rod; open the axial positioning connection structure between the telescopic transmission rod and the auger rod, lower the power head, retract the telescopic transmission rod into the auger rod, and use the axial positioning connection structure to axially lock the telescopic transmission rod and the auger rod;

[0029] Step 11: Lift the auger rod and connect the fourth pipe pile to the three pipe piles;

[0030] Step 12. Insert the auger rod of the large-diameter pipe pile rapid implantation equipment into the pipe pile hole from the top of the fourth pipe pile, and place the hammer frame on the upper end of the fourth pipe pile. The power head drives the telescopic transmission rod and the auger rod to rotate, and the hammer body repeatedly hammers on the upper end of the fourth pipe pile to hammer it into the ground until it meets the elevation requirements.

[0031] Step 13: Lift the auger rod until it leaves the fourth pipe pile, and the large-diameter pipe pile implantation construction is completed.

[0032] In the present invention, after the hammer frame is implemented on the upper end of the pipe pile, the power head works to drive the telescopic transmission rod and the spiral drill rod to rotate; when the transmission key on the telescopic transmission rod is located in the transmission key groove, it can drive the jacking seat to rotate, drive the jacking arm to rotate on the lower side of the spiral jacking slide rail, jack up the lifting casing, and drive the hammer body to rise; when the jacking arm rotates to disengage from the lower end of the spiral jacking slide rail, the hammer body falls freely and hammers on the pipe pile.

[0033] The present invention can greatly reduce the resistance to pile sinking by drilling holes to obtain soil, so a small-tonnage light hammer can be used for hammering. The drill bit is provided with an expansion blade for expanding and cutting the soil under the pipe pile. The cut and extruded soil can be returned to the ground through the spiral blade. The sinking resistance of the end of the pipe pile is also reduced, which is more conducive to the smooth implantation of large-diameter prestressed pipe piles. The hollow part of the pipe pile after the pile is planted can also be backfilled with soil. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a structural schematic diagram of the present invention.

[0035] Figure 2 It is a structural schematic diagram of the hammer body and the hammer frame in the present invention.

[0036] Figure 3 It is a structural schematic diagram of the spiral drill rod in the present invention.

[0037] Figure 4 yes Figure 3 AA section enlarged view.

[0038] Figure 5 It is a structural schematic diagram of the telescopic transmission rod in the present invention.

[0039] Figure 6 yes Figure 5 Enlarged view of the BB section.

[0040] Figure 7 It is a schematic diagram of the process structure of the rapid implantation method of the present invention. DETAILED DESCRIPTION

[0041] like Figure 1-6The large diameter (600 mm or more) pipe pile rapid implantation equipment shown in the figure comprises a pile frame 1, a power head 4 of a long spiral pile driver and a spiral drill rod 9, the power head 4 being mounted on the pile frame 1, and the present invention is characterized in that: an axial mounting cavity with an open upper end is provided in the spiral drill rod 9, and a telescopic transmission rod 5 can be mounted in the axial mounting cavity slidably in the axial direction, a positioning block 21 is provided on the inner side wall of the axial mounting cavity of the spiral drill rod 9, and an axial slide groove 26 cooperating with the positioning block 21 is provided on the outer wall of the telescopic transmission rod 5, the positioning block 21 can slide freely in the axial slide groove 26 in the axial direction without affecting the axial sliding of the telescopic transmission rod 5 in the spiral drill rod 9, and a positioning groove cooperating with the positioning block 21 is provided on the outer wall of the telescopic transmission rod 5 on one side of the axial slide groove 26. When the telescopic transmission rod rotates forward, the positioning block 21 can slide into the positioning groove, the telescopic transmission rod and the spiral drill rod are axially positioned, and the telescopic transmission rod drives the spiral drill rod to rotate forward; when the telescopic transmission rod rotates reversely, the positioning block can slide out of the positioning groove and slide into the axial slide groove, and the telescopic transmission rod and the spiral drill rod can slide relative to each other in the axial direction. In this embodiment, a positioning block 21 is provided on the inner side wall of the upper end of the axial installation cavity of the auger rod, and an upper positioning groove 25 and a lower positioning groove 27 cooperating with the positioning block are provided on the outer walls of the upper and lower ends of the telescopic transmission rod 5, respectively. A hammer frame 8 cooperating with the upper end of the pipe pile 10 is sleeved on the upper part of the auger rod 9 (the bare rod), and a hydraulic chuck or an electric control chuck 17 cooperating with the upper part of the auger rod 9 is provided on the inner side of the hammer frame 8. A support sleeve 20 sleeved on the upper end of the auger rod and rotatable relative to it is provided on the upper end of the hammer frame 8. A jacking seat is installed on the upper end of the support sleeve 20 through a bearing, and a transmission rod jack 13 is provided in the center of the jacking seat. A support sleeve 20 is provided on the outer surface of the support sleeve 20, which can slide freely up and down and is compatible with the upper end of the hammer frame 8 (hammering). The hammer body 7 is matched, and a lifting sleeve 15 coaxial with the supporting sleeve is provided on the outer side of the upper part of the hammer body 7, and two sections of spiral lifting slide rails 14 are provided on the inner wall of the lifting sleeve 15. Two lifting arms 12 are provided on the lifting seat, which are respectively slidably matched with the lower side surfaces of the two sections of spiral lifting slide rails 14, and the lifting arm 12 is provided with a lifting pulley 11 matched with the lower side surface of the spiral lifting slide rail 14; the lifting pulley 11 can roll on the lower side surface of the spiral lifting slide rail 14 to reduce friction resistance. The axial distance between the high end and the low end of the (same section) spiral lifting slide rail is greater than the distance that the hammer body is lifted by the lifting arm. The inner wall of the transmission rod insertion hole 13 of the lifting seat is provided with a transmission key slot that runs through from top to bottom, and the outer wall of the upper part of the telescopic transmission rod 5 where the transmission rod insertion hole 13 is matched is provided with a transmission key 28 that matches the transmission key slot; the transmission key 28 can be inserted into the transmission key slot from the upper end of the transmission key slot to fix the telescopic transmission rod and the lifting seat circumferentially; the upper end of the transmission key slot is provided with a guiding inclined surface to facilitate the insertion of the transmission key 28 into the transmission key slot. The upper end of the telescopic transmission rod 5 passes through the transmission rod insertion hole 13 and is connected to the power head 4.

[0042] The hammer frame 8 described in the present invention is cylindrical or cubic, and a mounting hole is provided in the center of the hammer frame 8. The hammer frame 8 is sleeved on the upper part of the auger rod through the mounting hole, and the lower end of the hammer frame 8 can be in contact with the upper end surface of the pipe pile 10; a hydraulic chuck or an electric control chuck 17 that can clamp the upper part of the auger rod 9 is provided in the mounting hole.

[0043] The upper end of the auger rod described in the present invention is located in the support sleeve. The telescopic transmission rod is inserted downward from the upper end of the auger rod into the support sleeve, and the telescopic transmission rod and the auger rod can rotate freely in the support sleeve. The lower end of the support sleeve 20 can be inserted into the installation through hole in the center of the hammer frame 8 so as to slide up and down. A support convex ring 16 is provided on the outer wall of the lower part of the support sleeve 20, and a limiting convex ring 19 cooperating with the support convex ring 16 is provided on the inner wall of the installation through hole of the hammer frame below the support convex ring 16. A buffer limiting convex ring 18 cooperating with the limiting convex ring 19 is provided on the outer wall of the support sleeve below the limiting convex ring 19, and a buffer zone (buffer interval) is provided between the buffer limiting convex ring 18 and the limiting convex ring 19. When the hammer body hammers the hammer frame downward, the hammer frame presses down and moves downward with the pipe pile, and the limiting convex ring 19 can slide downward in the buffer zone (buffer interval). After the limiting convex ring moves downward to contact with the buffer limiting convex ring, it can drive the support sleeve downward. The lower end surface of the hammer body hits the upper end surface of the hammer frame outside the supporting convex ring.

[0044] The inner wall of the lifting sleeve described in the present invention can be evenly distributed with more than two sections of spiral jacking slide rails on the circumference, and the high end and the low end of two adjacent sections of the spiral jacking slide rails are axially overlapped (the high end of one section of the spiral jacking slide rail is located directly above the low end of another adjacent section of the spiral jacking slide rail); a jacking arm is provided on the jacking seat opposite to each spiral jacking slide rail and is slidably matched with the lower side surface thereof, and a jacking pulley is provided on the jacking arm. When the jacking seat rotates one circle, the hammer body can hammer the hammer frame multiple times (several times for the spiral jacking slide rails), and the pipe pile can be continuously implanted downward at a high frequency and a small distance.

[0045] This embodiment is further improved, the left and right sides of the lower end of the auger rod are hinged with expansion blades 24; the lower end of the auger rod on the upper and lower sides of the hinge shaft connecting the expansion blade 24 to the auger rod is respectively provided with a limit upper boss 22 and a limit lower boss 23 that cooperate with the expansion blade 24. The limit upper boss 22 blocks the expansion blade 24 from rotating upward around the hinge shaft, and the expansion blade 24 is tilted upward from the hinge shaft to the tip; the limit lower boss 23 blocks the expansion blade from drooping naturally or rotating downward around the hinge shaft, and the expansion blade 24 is vertically downward or tilted toward the axis of the auger rod from the hinge shaft to the tip; the expansion blade 24 is in the shape of a pin column with a tip, and when the expansion blade droops naturally, the entire expansion blade is within the radial range of the auger rod (the distance between any point on the expansion blade and the axis of the auger rod is less than the outer diameter of the auger rod), and after the expansion blade rotates upward around the hinge shaft, the tip of the expansion blade extends out of the radial range of the auger rod (the distance between the tip of the expansion blade and the axis of the auger rod is greater than the outer diameter of the auger rod). The soil under the first section of the pipe pile can be stirred and loosened, and the large diameter pipe pile is easier to implant. The pile frame 1 is provided with a vertical guide rail 2, and the power head 4, hammer frame 8 and hammer body 7 are respectively provided with a guide slide 3 that cooperates with the guide rail 2; the guide slide 3 limits the power head, hammer frame and hammer body to move up and down along the pile frame, and the operation is more stable.

[0046] The present invention is further improved, and a fixed connection device is provided between the power head and the hammer frame and / or the hammer body, so that the installation and use are more convenient. The fixed connection device can be a pin column and a cable connected by binding, or an electromagnetic lock. In this embodiment, the fixed connection device is a hook 6 provided on the power head, and a hook notch matching with the hook 6 is provided on the hammer frame. When the power head needs to drive the hammer body and the hammer frame to rise and fall together, the hook 6 is hooked on the hook notch to achieve a fixed connection, otherwise the hook is separated from the hook notch.

[0047] It can also be said that the hook and the hook notch cooperate. The length of the auger rod and the telescopic transmission rod is more than twice the length of the pipe pile. The height of the pile frame is greater than the sum of the length of the auger rod, the length of the pipe pile and the height of the power head component.

[0048] like Figure 7 The large diameter pipe pile rapid implantation method shown comprises the following steps:

[0049] Step 1: Place the first pipe pile vertically at the pile position (i.e. in the preparation state). Figure 7 As shown in the ready state;

[0050] Step 2: Insert the auger rod of the large diameter pile quick implantation equipment into the pile hole from the top of the pile (the length of the auger rod is equal to twice the length of the pile). The power head drives the telescopic transmission rod and the auger rod to rotate and drill into the ground until the hammer frame is placed on the upper end of the pile. At this time, the transmission key is inserted into the transmission key slot. Figure 7 As shown in the A and B states;

[0051] Step 3: The power head drives the auger rod to continue rotating and drilling into the ground. The hammer repeatedly hits the hammer frame on the first pipe pile, hammering the first pipe pile (from the outside of the auger rod) into the ground to a height position above the ground where the first pipe pile can be connected. Figure 7 As shown in the B and C states;

[0052] Step 4: Lift the telescopic transmission rod and the auger rod to a certain height, and connect the second pipe pile to the first pipe pile. Figure 7 As shown in the D state;

[0053] Step 5: Insert the auger rod of the large-diameter pile quick implantation equipment into the pile hole from the top of the second pile, and place the hammer frame on the upper end of the second pile. The power head drives the telescopic transmission rod and the auger rod to rotate, and the hammer repeatedly hammers on the hammer frame on the upper end of the second pile, hammering the second pile into the ground to a height position above the ground where the second pile can be connected. Figure 7 As shown in the E and F states;

[0054] Step 6: Lift the telescopic transmission rod and the auger rod to a certain height, and connect the third pipe pile to the second pipe pile. Figure 7 As shown in the G state;

[0055] Step 7. Insert the auger rod of the large-diameter pipe pile rapid implantation equipment into the pipe pile hole from the top of the third pipe pile, and place the hammer frame on the upper end of the third pipe pile. The chuck on the hammer frame clamps the upper part of the auger rod; rotate the telescopic transmission rod in the opposite direction, and the positioning block slides out of the upper positioning groove into the axial sliding groove, lift the power head, and drive the telescopic transmission rod to slide upward relative to the auger rod to the height of two pipe piles (the positioning block corresponds to the lower positioning groove), and rotate the telescopic transmission rod forward, and the positioning block slides from the axial sliding groove into the lower positioning groove, and the telescopic transmission rod is axially positioned with the auger rod; during this process, the hammer body and the hammer frame are always at the upper end of the third pipe pile. When the telescopic transmission rod moves upward, the transmission key comes out of the transmission key groove, and the rotation of the telescopic transmission rod no longer drives the jacking seat to rotate; Figure 7 As shown in the H and I states.

[0056] Step 8. Open the chuck and release the auger rod. After the power head moves down until the auger rod contacts the ground below the first pile, the power head drives the telescopic transmission rod and the auger rod to rotate and drill into the ground until the telescopic transmission rod moves down to the transmission key inserted into the transmission key slot and the rotation of the telescopic transmission rod drives the jacking seat to rotate. Figure 7 As shown in the J state.

[0057] Step 9: The power head drives the auger rod to continue rotating and drilling into the ground. The hammer repeatedly hits the hammer frame at the upper end of the third pipe pile, hammering the third pipe pile into the ground until the third pipe pile is above the ground and the height position where the pile can be connected is reached. Figure 7 As shown in the K state.

[0058] Step 10. Lift the power head to the upper part of the auger rod (the bare rod) and insert it into the chuck on the hammer frame. The chuck clamps the upper part of the auger rod; rotate the telescopic transmission rod in the opposite direction, the positioning block slides out from the lower positioning groove to the axial sliding groove, lower the power head, retract the telescopic transmission rod into the auger rod, rotate the telescopic transmission rod forward, the positioning block slides from the axial sliding groove into the upper positioning groove, and the telescopic transmission rod is axially positioned with the auger rod; Figure 7 As shown in the L and M states.

[0059] Step 11: Lift the telescopic transmission rod and the auger rod to a certain height, and connect the fourth pipe pile to the three pipe piles; Figure 7 As shown in the N state.

[0060] Step 12: Insert the auger rod of the large-diameter pipe pile rapid implantation equipment into the pipe pile hole from the top of the fourth pipe pile, and place the hammer frame on the upper end of the fourth pipe pile. The power head drives the telescopic transmission rod and the auger rod to rotate, and the hammer repeatedly hammers on the upper end of the fourth pipe pile to hammer it into the ground until it meets the elevation requirements. Figure 7 As shown in the O and P states.

[0061] Step 13: Lift the auger rod until it leaves the fourth pipe pile, and the implantation of four large-diameter pipe piles is completed. Figure 7 As shown in the Q state.

[0062] In the present invention, after the hammer frame is placed on the upper end of the pipe pile, the power head works to drive the telescopic transmission rod and the spiral drill rod to rotate; when the transmission key on the telescopic transmission rod is located in the transmission key slot, it can drive the jacking seat to rotate, drive the jacking arm to rotate on the lower side of the spiral jacking slide rail, jack up the lifting casing, and drive the hammer body to rise; when the jacking arm rotates to disengage from the lower end of the spiral jacking slide rail, the hammer body falls freely and hits the hammer frame on the pipe pile.

[0063] The present invention has a simple structure, is easy to operate, has a small pile frame height requirement, has a low hammer weight requirement, and has a low manufacturing cost. Since drilling holes to obtain soil can greatly reduce the resistance to pile sinking, a small-tonnage light hammer can be used for hammering. The drill bit is provided with an expansion blade for expanding the soil under the cut pipe pile. The cut and squeezed soil can be returned to the ground through the spiral blade. The sinking resistance of the end of the pipe pile is also reduced, which is more conducive to the smooth implantation of large-diameter prestressed pipe piles. The hollow part of the pipe pile after the pile is planted can also be backfilled with soil.

Claims

1. A large diameter pipe pile rapid implantation device, comprising a pile frame, a power head and a spiral drill rod, wherein the power head is installed on the pile frame, characterized in that A telescopic transmission rod is arranged in the auger rod, and at least one axial positioning connection structure is arranged between the telescopic transmission rod and the auger rod; a hammer frame matching with the pipe pile is sleeved on the upper part of the auger rod, a chuck matching with the upper part of the auger rod is arranged on the hammer frame, a support sleeve is arranged on the upper end of the hammer frame, a jacking seat is installed on the upper part of the support sleeve through a bearing, a transmission rod jack is arranged in the center of the jacking seat, a hammer body matching with the upper end of the hammer frame is arranged on the outer sleeve of the support sleeve, a lifting sleeve is arranged on the upper part of the hammer body, at least one spiral lifting slide rail is arranged on the inner wall of the lifting sleeve, and a lifting seat is provided with a lifting guide which matches with the spiral lifting slide rail. A lifting arm matched with a rail, a telescopic transmission rod is key-connected or fixedly connected to the lifting seat, and the telescopic transmission rod passes through a transmission rod jack and is connected to a power head; the structure of the telescopic transmission rod is as follows: an axial mounting cavity with an open upper end is arranged in the auger rod, and the telescopic transmission rod can be axially freely slidably installed in the axial mounting cavity, and a mutually matched positive locking and reverse unlocking positioning connection structure is arranged between the upper part of the telescopic transmission rod and the upper part of the auger rod; a mutually matched positive locking and reverse unlocking positioning connection structure is arranged between the lower part of the telescopic transmission rod and the upper part of the auger rod.

2. The large diameter pipe pile rapid implantation device according to claim 1 is characterized in that The positioning connection structure is as follows: a positioning block is provided on the inner side wall of the upper part of the spiral drill rod, an axial sliding groove cooperating with the positioning block is provided on the outer wall of the telescopic transmission rod, and an upper positioning groove and a lower positioning groove cooperating with the positioning block are respectively provided on the outer walls of the upper and lower parts of the telescopic transmission rod on one side of the axial sliding groove.

3. The large diameter pipe pile rapid implantation device according to claim 1 is characterized in that The hammer frame is cylindrical or cubic, with a mounting hole in the center, and is sleeved on the upper part of the auger rod through the mounting hole; a chuck for clamping the upper part of the auger rod is arranged in the mounting hole.

4. The large diameter pipe pile rapid implantation device according to claim 1 is characterized in that The upper end of the auger rod is located in the supporting sleeve; the telescopic transmission rod is inserted into the supporting sleeve from the upper end of the auger rod, and the telescopic transmission rod and the auger rod can rotate freely in the supporting sleeve; the lower end of the supporting sleeve is inserted in the mounting through hole, and a supporting convex ring is provided on the outer side wall of the lower part of the supporting sleeve, and a limiting convex ring cooperating with the supporting convex ring is provided on the inner wall of the mounting through hole of the hammer frame below the supporting convex ring, and a buffer limiting convex ring cooperating with the limiting convex ring is provided on the outer side wall of the supporting sleeve below the limiting convex ring, and a buffer belt is provided between the buffer limiting convex ring and the limiting convex ring.

5. The large diameter pipe pile rapid implantation device according to claim 1 is characterized in that At least two sections of spiral lifting slide rails are evenly distributed on the inner wall of the lifting sleeve, and the high ends and low ends of two adjacent sections of spiral lifting slide rails overlap axially; a lifting arm matching with each spiral lifting slide rail is respectively provided on the lifting seat.

6. The large diameter pipe pile rapid implantation device according to claim 1 is characterized in that The inner wall of the transmission rod insertion hole of the jacking seat is provided with a transmission key slot which is open at the upper end or penetrates from top to bottom, and the upper outer wall of the telescopic transmission rod is provided with a transmission key which matches with the transmission key slot.

7. The large diameter pipe pile rapid implantation device according to claim 1 is characterized in that The left and / or right side of the lower end of the auger rod is hinged with an expansion blade; the lower end of the auger rod on the upper and lower sides of the hinge shaft connecting the expansion blade and the auger rod is respectively provided with an upper limiting boss and a lower limiting boss cooperating with the expansion blade.

8. The large diameter pipe pile rapid implantation device according to claim 1 is characterized in that The pile frame is provided with a vertical guide rail, and the power head, hammer frame and hammer body are respectively provided with guide slide seats matched with the guide rail; a fixed connection device is provided between the power head and the hammer frame and / or hammer body.

9. A method for rapid implantation of large diameter pipe piles using the large diameter pipe pile rapid implantation device according to claim 1, characterized in that The steps include: Step 1: Place the first pipe pile vertically at the pile position; Step 2: Insert the auger rod of the large-diameter pile quick implantation equipment into the pile hole from the top of the pile, and the power head drives the telescopic transmission rod and the auger rod to rotate and drill into the ground until the hammer frame is placed on the upper end of the pile; Step 3: The auger rod continues to rotate and drill into the ground, and the hammer repeatedly hammers the upper end of the pile and hammers it into the ground to the height above the ground where the first pile can be connected; Step 4: Lift the telescopic transmission rod and the auger rod to connect the second pipe pile to the first pipe pile; Step 5: Insert the auger rod of the large-diameter pipe pile rapid implantation equipment into the pipe pile hole from the top of the second pipe pile, and place the hammer frame on the upper end of the second pipe pile. The power head drives the telescopic transmission rod and the auger rod to rotate, and the hammer repeatedly hammers the upper end of the second pipe pile and hammers it into the ground to a height above the ground where the second pipe pile can be connected. Step 6: Lift the auger rod and connect the third pipe pile to the second pipe pile; Step 7: Insert the auger rod of the large-diameter pipe pile rapid implantation equipment into the pipe pile hole from the top of the third pipe pile, place the hammer frame on the upper end of the third pipe pile, and clamp the upper part of the auger rod with the chuck on the hammer frame; Open the axial positioning connection structure between the telescopic transmission rod and the auger rod, lift the power head, drive the telescopic transmission rod to slide upward relative to the auger rod to a height of two pipe piles, and use the axial positioning connection structure to axially lock the telescopic transmission rod and the auger rod; Step 8, open the chuck, release the auger rod, and the power head moves down until the auger rod contacts the ground under the first pipe pile. The power head drives the telescopic transmission rod and the auger rod to rotate and drill into the ground until the telescopic transmission rod moves down to the transmission key inserted into the transmission key slot, and the rotation of the telescopic transmission rod drives the jacking seat to rotate; Step 9: The auger rod continues to rotate and drills into the ground, and the hammer repeatedly hammers the upper end of the third pipe pile and hammers it into the ground until the third pipe pile is above the ground and the pile can be connected; Step 10: Lift the power head to the upper part of the auger rod and insert it into the chuck on the hammer frame. The chuck clamps the upper part of the auger rod; Open the axial positioning connection structure between the telescopic transmission rod and the auger rod, lower the power head, retract the telescopic transmission rod into the auger rod, and use the axial positioning connection structure to axially lock the telescopic transmission rod and the auger rod; Step 11: Lift the auger rod and connect the fourth pipe pile to the three pipe piles; Step 12: Insert the auger rod of the large-diameter pipe pile rapid implantation equipment into the pipe pile hole from the top of the fourth pipe pile, and place the hammer frame on the upper end of the fourth pipe pile. The power head drives the telescopic transmission rod and the auger rod to rotate, and the hammer repeatedly hammers the upper end of the fourth pipe pile to hammer it into the ground until it meets the elevation requirements. Step 13: Lift the auger rod until it leaves the fourth pipe pile, and the large-diameter pipe pile implantation construction is completed.

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