A pile head breaking device for a wind power foundation precast pipe pile

Abstract

The application relates to a pile head breaking device for a wind power foundation prefabricated pipe pile, and relates to the technical field of pile head breaking. The device comprises a rack, an inner support assembly and an outer pressing assembly. The inner support assembly comprises an inner support block and a lifting piece. The cross section of the inner support block in the axial direction is polygonal. The side edges of the inner support block are used for one-to-one corresponding support at the positions where the internal main reinforcement of the prefabricated pipe pile is located. The outer pressing assembly comprises a ring support frame, a first lifting part, a plurality of driving cylinders and a plurality of extrusion blocks. The driving cylinders are used for driving the extrusion blocks to one-to-one corresponding crush the parts of the prefabricated pipe pile which are opposite to the side walls of the inner support block. The breaking assembly and the pressure cutting assembly are arranged at each side wall of the inner support block and on each extrusion block. The breaking assembly is used for breaking the pipe wall of the prefabricated pipe pile after crushing. The pressure cutting assembly is used for pressure cutting the pipe wall of the prefabricated pipe pile after breaking. The application can quickly break the pile head of the prefabricated pipe pile, and can also perfectly keep the main reinforcement at the pile head of the prefabricated pipe pile.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of pile head breaking, and in particular to a pile head breaking device for a prefabricated pipe pile of a wind power foundation. BACKGROUND

[0002] The prefabricated pipe pile is widely used as a concrete pile of a wind power foundation due to the advantages of high bearing capacity, high construction efficiency and low cost. After the prefabricated pipe pile is installed, the pile head part of the prefabricated pipe pile needs to be broken to enable the prefabricated pipe pile to be effectively anchored to the pile cap through the reinforcement.

[0003] At present, in order to quickly break the pile head of the prefabricated pipe pile, the pile head of the prefabricated pipe pile is mainly cut by a pile head cutting machine. Since the cutting ability of the blade of the pile head cutting machine is strong, the pile head cutting machine usually cuts off the main reinforcement and the concrete when cutting the pile head, so that the prefabricated pipe pile can only be connected to the pile cap through the reinforcement cage poured later. Although the effective connection between the pile foundation and the pile cap is achieved, the anchoring strength is lower than that of the direct connection between the main reinforcement of the prefabricated pipe pile and the pile cap. Therefore, there is an urgent need for a breaking device that can quickly break the pile head of the prefabricated pipe pile and perfectly retain the main reinforcement at the pile head of the prefabricated pipe pile. SUMMARY

[0004] In order to quickly break the pile head of the prefabricated pipe pile and perfectly retain the main reinforcement at the pile head of the prefabricated pipe pile, the application provides a pile head breaking device for a prefabricated pipe pile of a wind power foundation.

[0005] The application provides a pile head breaking device for a prefabricated pipe pile of a wind power foundation, which adopts the following technical scheme:

[0006] The pile head breaking device for the prefabricated pipe pile of the wind power foundation comprises:

[0007] a rack;

[0008] an inner support assembly comprising an inner support block and a lifting piece;

[0009] The inner support block is connected to the rack through the lifting piece, the lifting piece is used to drive the inner support block to move up and down in the prefabricated pipe pile, and the cross section of the inner support block in the axial direction is a polygon. When the inner support block is located in the prefabricated pipe pile, the side edges of the inner support block are correspondingly supported at the positions where the internal main reinforcement is located;

[0010] an outer pressing assembly comprising a ring support frame, a first lifting part, a plurality of driving cylinders and a plurality of pressing blocks;

[0011] The ring support frame is connected to the rack through a first lifting part, the first lifting part is used to drive the ring support frame to move up and down, the ring support frame is used to be sleeved on the prefabricated pipe pile, a driving cylinder is connected to the ring support frame, and an extrusion block is correspondingly connected to a movable end of the driving cylinder, the driving cylinder is used to drive the extrusion block to crush the part of the prefabricated pipe pile that is opposite to the side wall of the inner support block;

[0012] The crushing assembly is used to crush the pipe wall of the prefabricated pipe pile after crushing, and the pressure cutting assembly is used to pressure cut the pipe wall of the prefabricated pipe pile after crushing.

[0013] Optionally, the crushing assembly is arranged in a crushing cavity arranged in the inner support block or the extrusion block, the crushing assembly comprises a crushing cylinder, a crushing plate and crushing blocks, the crushing cylinder is connected to a cavity wall of the crushing cavity, the crushing plate is connected to a movable end of the crushing cylinder and is slidingly arranged in the crushing cavity, the crushing blocks are arranged in plurality and are connected to the crushing plate, and the crushing blocks slidingly pass through the inner support block or the extrusion block, when the crushing cylinder is in a contraction state, the end surface of the crushing block away from the crushing plate is flush with the side surface of the inner support block or the side surface of the extrusion block.

[0014] Optionally, at least one reinforcing rod is arranged in the crushing plate, both ends of the reinforcing rod are connected to the cavity wall of the crushing cavity, the crushing plate is slidingly connected to the reinforcing rod, and the reinforcing rod is arranged in dislocation with the crushing blocks.

[0015] Optionally, the pressure cutting assembly comprises pressure cutting blocks and a power part, the pressure cutting blocks are arranged in plurality and are connected to the top end of the inner support block or the extrusion block, the pressure cutting blocks are provided with pressure cutting edges, the power part is arranged on the inner support block or the extrusion block, the power part is used to drive all the pressure cutting blocks to pressure cut the pipe wall of the prefabricated pipe pile through the pressure cutting edges, and the pressure cutting blocks on the inner support block are arranged in dislocation with the pressure cutting blocks on the extrusion block.

[0016] Optionally, the pressure cutting blocks are hinged to the top end of the inner support block or the extrusion block, the power part comprises push blocks and top blocks, the push blocks and the top blocks are arranged in plurality and are in one-to-one correspondence, the push blocks are in one-to-one correspondence with the pressure cutting blocks of the pressure cutting assemblies close to the push blocks, the push blocks are arranged in power grooves arranged on the top surface of the inner support block or the extrusion block, the power grooves are communicated with the crushing cavities, the push blocks are connected to the crushing plate, the top blocks are slidingly arranged in the power grooves, the top blocks are provided with power inclined surfaces, and the push blocks abut against the power inclined surfaces, when the push blocks slide with the crushing plate, the push blocks drive the top blocks to turn the pressure cutting blocks to the pipe wall of the prefabricated pipe pile through the power inclined surfaces.

[0017] Optionally, torsional springs are arranged at the hinge positions of the pressure cutting blocks, and the torsional springs are used to drive the pressure cutting blocks to turn away from the pipe wall of the prefabricated pipe pile.

[0018] Optionally, the lifting member is a hydraulic multi-stage telescopic cylinder.

[0019] Optionally, the first lifting part comprises a plurality of winding shafts and lifting ropes, the winding shafts and the lifting ropes are provided in one-to-one correspondence, the plurality of winding shafts are arranged in a ring shape and are rotationally connected to the frame, one end of the lifting rope is connected to and wound around the winding shaft, and the other end of the lifting rope is connected to the ring support frame.

[0020] Optionally, the winding shaft is connected with a worm gear, the worm gear is engaged with a worm rotationally connected to the frame, the worm is connected with a first bevel gear, all the first bevel gears are jointly engaged with a second bevel gear, and the second bevel gear is connected with a lifting motor mounted on the frame.

[0021] Optionally, the frame is connected with a plurality of lifting rings arranged in a ring shape.

[0022] To sum up, the present application has at least one of the following beneficial technical effects:

[0023] The pile head breaking device for the wind power foundation prefabricated pipe pile comprises a frame, an inner support assembly, an outer pressure assembly, a breaking assembly and a pressure cutting assembly. The inner support block can be inserted into the prefabricated pipe pile to support the main reinforcement of the prefabricated pipe pile by the side edges thereof. The extrusion block can crush the pipe wall of the prefabricated pipe pile on the side wall of the inner support block under the driving of the driving cylinder. Since the main reinforcement of the prefabricated pipe pile is protected by the side edges of the inner support block, the main reinforcement of the prefabricated pipe pile is not easily damaged in the crushing process. After the pipe wall of the prefabricated pipe pile is crushed, the breaking cylinder drives the breaking block to slide, so that the breaking block extrudes and breaks the pipe wall of the prefabricated pipe pile. Then, the breaking block and the extrusion block are reset, the inner support block and the ring support frame are lowered, and the process of crushing the pipe wall of the prefabricated pipe pile by the extrusion block and breaking the pipe wall of the prefabricated pipe pile by the breaking block is repeated. In the breaking process of the breaking block, the pressure cutting block can be driven by the breaking plate to turn to the pipe wall of the prefabricated pipe pile. The pressure cutting block can cut the steel wire and the pipe wall fragments hanging between the main reinforcements of the prefabricated pipe pile by the pressure cutting blade, so that the pipe wall of the prefabricated pipe pile is separated from the main reinforcement. Therefore, the pile head of the prefabricated pipe pile can be quickly broken, and the main reinforcement at the pile head of the prefabricated pipe pile can be well reserved. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a structural schematic view of the embodiment of the present application installed on a prefabricated pipe pile;

[0025] Figure 2 is a structural schematic view of the embodiment of the present application;

[0026] Figure 3 is a structural schematic view of the inner support assembly and the outer pressure assembly;

[0027] Figure 4 is a structural schematic view of the breaking assembly and the pressure cutting assembly on the inner support block;

[0028] Figure 5 is a structural schematic view of the breaking assembly and the pressure cutting assembly on the extrusion block.

[0029] BRIEF DESCRIPTION OF DRAWINGS

[0030] 1, rack; 11, lifting ring; 2, inner support assembly; 21, inner support block; 211, crushing cavity; 212, power groove; 22, lifting piece; 3, outer pressure assembly; 31, ring support frame; 32, first lifting part; 321, winding shaft; 322, lifting rope; 323, worm gear; 324, worm; 325, first bevel gear; 326, second bevel gear; 327, lifting motor; 328, dust cover; 33, drive cylinder; 34, extrusion block; 4, crushing assembly; 41, crushing cylinder; 42, crushing plate; 43, crushing block; 44, reinforcing rod; 5, pressure cutting assembly; 51, pressure cutting block; 511, pressure cutting blade; 52, power part; 521, push block; 522, top block; 5221, power inclined surface; 523, torsional spring. DETAILED DESCRIPTION

[0031] The following will be described in detail in combination with the accompanying drawings Figures 1-5 The application is further described in detail.

[0032] The embodiment of the application discloses a pile head breaking device for a wind power foundation prefabricated pipe pile. Figure 1 A pile head breaking device for a wind power foundation prefabricated pipe pile comprises a rack 1, an inner support assembly 2 and an outer pressure assembly 3.

[0033] The rack 1 is supported on the ground where the prefabricated pipe pile is located.

[0034] The inner support assembly 2 comprises an inner support block 21 and a lifting piece 22.

[0035] The inner support block 21 is connected to the rack 1 through the lifting piece 22, the lifting piece 22 is used for driving the inner support block 21 to move up and down in the prefabricated pipe pile, the cross section of the inner support block 21 in the axial direction is a polygon, when the inner support block 21 is located in the prefabricated pipe pile, the side edges of the inner support block 21 are correspondingly supported at the positions where the main steel bars in the prefabricated pipe pile are located; the side edges of the inner support block 21 can form support at the main steel bars of the prefabricated pipe pile, so that the main steel bars of the prefabricated pipe pile are not easy to bend.

[0036] The outer pressure assembly 3 comprises a ring support frame 31, a first lifting part 32, a plurality of drive cylinders 33 and a plurality of extrusion blocks 34.

[0037] The ring support frame 31 is connected to the rack 1 through the first lifting part 32, the first lifting part 32 is used to drive the ring support frame 31 to move up and down, and the ring support frame 31 is used to be sleeved on the prefabricated pipe pile; the driving cylinder 33 is fixedly connected to the ring support frame 31, and the extrusion blocks 34 are correspondingly fixedly connected to the movable ends of the driving cylinder 33, and the driving cylinder 33 is used to drive the extrusion blocks 34 to crush the positions of the prefabricated pipe pile which are opposite to the side walls of the inner support block 21; the circular arc pipe wall of the prefabricated pipe pile is easily crushed by the extrusion blocks 34 because of the space between the circular arc pipe wall and the side walls of the inner support block 21; in the embodiment, the driving cylinder 33 is a hydraulic cylinder.

[0038] In the embodiment, the driving cylinder 33 is a hydraulic cylinder. Figure 2 , the crushing assembly 4 is arranged on each side wall of the inner support block 21 and each extrusion block 34, and the crushing assembly 4 is used to crush the pipe wall of the prefabricated pipe pile after the pipe wall is crushed.

[0039] In use, the lifting part 22 drives the inner support block 21 to be inserted into the prefabricated pipe pile, so that the side edges of the inner support block 21 can be opposite to and support the main reinforcement inside the prefabricated pipe pile; the first lifting part 32 drives the ring support frame 31 to move downward, so that the extrusion blocks 34 can be moved to positions opposite to the inner support block 21; the driving cylinder 33 can drive the extrusion blocks 34 to extrude the pipe wall of the prefabricated pipe pile; because of the space between the pipe wall of the prefabricated pipe pile and the side walls of the inner support block 21, the extrusion blocks 34 easily crush the pipe wall of the prefabricated pipe pile and abut against the side walls of the inner support block 21; because the side edges of the inner support block 21 can support the main reinforcement of the prefabricated pipe pile, the main reinforcement of the prefabricated pipe pile is not easily bent under pressure, so that the prefabricated pipe pile can be crushed under the condition that the main reinforcement of the prefabricated pipe pile is protected.

[0040] After the pipe wall of the prefabricated pipe pile is crushed, the crushing assembly 4 arranged on the inner support block 21 and the extrusion blocks 34 can crush the crushed pipe wall; because the pipe wall of the prefabricated pipe pile is already in a crushed state, the crushing assembly 4 can crush the pipe wall of the prefabricated pipe pile without punching the pipe wall of the prefabricated pipe pile.

[0041] After the pipe wall of the prefabricated pipe pile is crushed, the pipe wall of the prefabricated pipe pile is still hung on the main reinforcement because the pipe wall of the prefabricated pipe pile contains the spiral steel wire in addition to the main reinforcement; the pressure cutting assembly 5 arranged on the inner support block 21 and the extrusion blocks 34 can cut the crushed pipe wall of the prefabricated pipe pile, so that the steel wire of the prefabricated pipe pile and the crushed pipe wall can be separated from the main reinforcement, so that the pipe wall of the prefabricated pipe pile can be repeatedly crushed from top to bottom, so that the pipe wall of the prefabricated pipe pile can be quickly crushed without damaging the main reinforcement.

[0042] Based on the above analysis, the extrusion block 34 can crush the pipe wall of the precast pipe pile under the condition that the main reinforcement of the precast pipe pile is protected, the crushing assembly 4 is easy to crush the pipe wall of the precast pipe pile, and the pressure cutting assembly 5 is easy to cut the crushed pipe wall of the precast pipe pile, so that the pipe wall of the precast pipe pile can be quickly broken through by crushing, crushing and pressure cutting, and the main reinforcement at the pile head of the precast pipe pile can be kept intact.

[0043] Specifically, referring to Figures 3-5 , the crushing assembly 4 is arranged in the crushing cavity 211 arranged in the inner support block 21 or the extrusion block 34, and the crushing assembly 4 comprises a crushing cylinder 41, a crushing plate 42 and a plurality of crushing blocks 43.

[0044] Referring to Figure 4 and Figure 5 , the crushing cylinder 41 is fixedly connected to the cavity wall of the crushing cavity 211, the crushing plate 42 is fixedly connected to the movable end of the crushing cylinder 41, the crushing plate 42 is slidingly arranged in the crushing cavity 211, and the crushing blocks 43 are arranged in plurality and are fixedly connected to the side of the crushing plate 42 away from the crushing cylinder 41. The crushing blocks 43 slidingly pass through the inner support block 21 or the extrusion block 34, and when the crushing cylinder 41 is in the contracted state, the end surface of the crushing blocks 43 away from the crushing plate 42 is flush with the side surface of the inner support block 21 or the side surface of the extrusion block 34.

[0045] Referring to Figure 4 , in this embodiment, the crushing cylinder 41 is a hydraulic cylinder; the side of the crushing plate 42 close to the crushing cylinder 41 is attached to the cavity wall of the crushing cavity 211; and the number of the crushing blocks 43 is six and arranged in two rows and three columns.

[0046] After the pipe wall of the precast pipe pile is crushed, the crushing cylinder 41 is started, the crushing cylinder 41 can drive the crushing plate 42 to slide, and the crushing plate 42 can drive the crushing blocks 43 to slide. Since the inner support block 21 and the extrusion block 34 are abutted against the crushed pipe wall of the precast pipe pile, the crushing blocks 43 can be directly extruded against the crushed pipe wall of the precast pipe pile after sliding out of the inner support block 21 or the extrusion block 34, and the crushing blocks 43 extrude and crush the crushed pipe wall of the precast pipe pile, so that the crushed pipe wall of the precast pipe pile is easy to be crushed.

[0047] Referring to Figure 4 , in order to improve the strength of the crushing cavity 211, two reinforcing rods 44 are arranged on the crushing plate 42, and the two ends of the reinforcing rods 44 are fixedly connected to the cavity wall of the crushing cavity 211. The crushing plate 42 is slidingly connected with the reinforcing rods 44, and the reinforcing rods 44 are arranged in a staggered manner with the crushing blocks 43.

[0048] The reinforcing rods 44 are arranged in a staggered manner with the crushing blocks 43, so that the reinforcing rods 44 can support at the positions in the crushing cavity 211 where the crushing blocks 43 are not arranged, the reinforcing rods 44 improve the strength of the positions in the crushing cavity 211 where the crushing blocks 43 are not arranged, so that the crushing cavity 211 is not easy to be deformed due to extrusion; the reinforcing rods 44 slide through the crushing plate 42, so that the reinforcing rods 44 can guide the sliding of the crushing plate 42, and the sliding of the crushing plate 42 is more stable.

[0049] Specifically, referring to Figure 4 , the cutting assembly 5 comprises a cutting block 51 and a power part 52.

[0050] Referring to Figure 4 and Figure 5 , the cutting block 51 is arranged on the top end of the inner supporting block 21 or the extruding block 34, and the cutting block 51 is provided with a cutting edge 511; the power part 52 is arranged on the inner supporting block 21 or the extruding block 34, and the power part 52 is used to drive all the cutting blocks 51 to cut the pipe wall of the precast pipe pile through the cutting edge 511, and the cutting blocks 51 on the inner supporting block 21 are arranged in a staggered manner with the cutting blocks 51 on the extruding block 34.

[0051] In the embodiment, the number of the cutting blocks 51 of each cutting assembly 5 on the inner supporting block 21 is one, and the number of the cutting blocks 51 on each extruding block 34 is two.

[0052] The power part 52 can drive the cutting blocks 51 to act, so that the cutting edge 511 of the cutting block 51 can cut the pipe wall of the precast pipe pile, and since the cutting blocks 51 on the inner supporting block 21 are arranged in a staggered manner with the cutting blocks 51 on the extruding block 34, the cutting blocks 51 can sufficiently cut the pipe wall of the precast pipe pile after crushing, so that the pipe wall of the precast pipe pile is easy to separate from the main reinforcement.

[0053] Specifically, referring to Figure 4 and Figure 5 , the cutting block 51 is hinged to the top end of the inner supporting block 21 or the extruding block 34, the power part 52 comprises a push block 521 and a top block 522, the push block 521 and the top block 522 are each provided with at least one, and one-to-one correspondence, and the push block 521 corresponds to the cutting block 51 of the cutting assembly 5 close to the push block 521.

[0054] The pushing block 521 is located in a power groove 212 formed on the top surface of the inner supporting block 21 or the extruding block 34, the power groove 212 is communicated with the crushing cavity 211, and the pushing block 521 is fixedly connected to the crushing plate 42; the top block 522 is slidingly arranged in the power groove 212, the sliding direction of the top block 522 is perpendicular to the sliding direction of the crushing plate 42, the top block 522 is provided with a power inclined surface 5221, the pushing block 521 abuts against the power inclined surface 5221, and when the pushing block 521 slides with the crushing plate 42, the pushing block 521 drives the top block 522 to rotate the pressing and cutting block 51 to the pipe wall of the precast pipe pile through the power inclined surface 5221.

[0055] With reference to Figure 5 In the embodiment, when the top block 522 slides out of the power groove 212, the side of the top block 522 close to the hinge of the pressing and cutting block 51 can be attached to the hinge of the pressing and cutting block 51.

[0056] When the crushing plate 42 drives the crushing block 43 to slide, the crushing plate 42 can also drive the pushing block 521 to move, the pushing block 521 can push the top block 522 to slide upward by means of the power inclined surface 5221, the top block 522 can drive the pressing and cutting block 51 to rotate, so that the pressing and cutting block 51 can rotate to the pipe wall of the precast pipe pile, and the pressing and cutting block 51 can press and cut the pipe wall of the precast pipe pile after crushing by the pressing and cutting edge 511, so that the pipe wall and the steel wire of the precast pipe pile can be separated from the main reinforcing steel bar.

[0057] Since the pressing and cutting edge 511 of the pressing and cutting block 51 applies a downward oblique pressing and cutting force to the pipe wall and the steel wire of the precast pipe pile, when the pressing and cutting force is transmitted to the main reinforcing steel bar through the steel wire, the pressing and cutting force can be decomposed into a pressing and cutting component force perpendicular to the main reinforcing steel bar and a pressing and cutting component force along the main reinforcing steel bar, and the pressing and cutting component force along the main reinforcing steel bar is difficult to cause the main reinforcing steel bar to be bent and deformed, so that under the condition that the pressing and cutting block 51 can normally press and cut the pipe wall of the precast pipe pile, the driving force of the pressing and cutting block 51 to bend the main reinforcing steel bar during pressing and cutting is reduced, and thus the main reinforcing steel bar of the precast pipe pile is more likely to remain in good condition.

[0058] Since the pipe wall at the bottom of the pile head of the precast pipe pile is close to the pile body of the precast pipe pile, in order to protect the pile body of the precast pipe pile from being damaged when the pile head is broken, the pipe wall at the bottom of the pile head of the precast pipe pile after crushing is manually broken.

[0059] With reference to Figure 4 and Figure 5 In order to facilitate automatic resetting of the pressing and cutting block 51, the hinge of the pressing and cutting block 51 is provided with a torsional spring 523, one end of the torsional spring 523 is fixedly connected to the pressing and cutting block 51, the other end is fixedly connected to the inner supporting block 21 or the extruding block 34, and the torsional spring 523 is used to drive the pressing and cutting block 51 to rotate away from the pipe wall of the precast pipe pile; during the resetting of the pushing block 521 with the crushing plate 42, the top block 522 can slide downward and reset under the action of gravity, and the elastic force accumulated in the torsional spring 523 can drive the pressing and cutting block 51 to rotate reversely, so that the pressing and cutting block 51 can be automatically reset.

[0060] Specifically, referring to Figure 2 , the lifting member 22 is a hydraulic multi-stage telescopic cylinder, the lifting member 22 is fixedly connected to the top end of the rack 1, and the smallest movable end of the lifting member 22 is fixedly connected to the inner supporting block 21. The hydraulic multi-stage telescopic cylinder has the advantages of small space occupation and large driving force, so that the lifting member 22 can not only drive the inner supporting block 21 to move up and down, but also help to reduce the height of the entire breaking device.

[0061] Specifically, referring to Figure 2 , the first lifting part 32 comprises a winding shaft 321 and a lifting rope 322.

[0062] The winding shaft 321 and the lifting rope 322 are provided in plurality and one-to-one correspondence. The plurality of winding shafts 321 are circumferentially arranged and are all rotationally connected to the top end of the rack 1. One end of the lifting rope 322 is fixedly connected and wound on the winding shaft 321, and the other end is fixedly connected to the ring support frame 31.

[0063] By rotating the winding shaft 321, the lifting rope 322 can be wound or unwound. When all the winding shafts 321 synchronously unwind the lifting rope 322, the ring support frame 31 can stably move downward horizontally, thereby facilitating the driving of the ring support frame 31 to descend.

[0064] Referring to Figure 2 , in order to facilitate the synchronous rotation of all the winding shafts 321, the winding shaft 321 is fixedly connected with a worm gear 323, the worm gear 323 is engaged with a worm 324 rotationally connected to the rack 1, the worm 324 is fixedly connected with a first bevel gear 325, all the first bevel gears 325 are jointly engaged with a second bevel gear 326, the second bevel gear 326 is connected with a lifting motor 327 installed on the rack 1, the lifting motor 327 is connected to the rack 1, and the output shaft of the lifting motor 327 is fixedly connected with the second bevel gear 326.

[0065] The lifting motor 327 can drive the second bevel gear 326 to rotate, the second bevel gear 326 can drive all the first bevel gears 325 to synchronously rotate, so that all the worms 324 can synchronously drive the winding shafts 321 connected thereto to rotate at the same speed, thereby facilitating the synchronous winding or unwinding of all the lifting ropes 322.

[0066] Referring to Figure 1 and Figure 2In the embodiment, the spool 321, the worm wheel 323, the worm 324, the first bevel gear 325 and the second bevel gear 326 are collectively covered by a dust cover 328 fixed to the frame 1, and the dust cover 328 is used to prevent dust or foreign matter from affecting the transmission of the worm wheel 323 and the worm 324 and the first bevel gear 325 and the second bevel gear 326; the lifting motor 327 is fixed to the dust cover 328, and the lifting motor 327 is connected to the frame 1 through the dust cover 328.

[0067] With reference to Figure 1 In order to facilitate the movement of the frame 1, a plurality of lifting rings 11 are fixed to the frame 1 and arranged around the frame 1, and the crane can directly lift the entire breaking device through the lifting rings 11, so that the breaking device is convenient to move between different precast pipe piles.

[0068] The implementation principle of the pile head breaking device for the wind power foundation precast pipe pile according to the embodiment of the application is as follows: in use, the lifting member 22 drives the inner support block 21 to be inserted into the precast pipe pile, the first lifting part 32 drives the ring support frame 31 to move downward to a position opposite to the inner support block 21, the driving cylinder 33 drives the extrusion block 34 to extrude the wall of the precast pipe pile, and the wall of the precast pipe pile is crushed on the side wall of the inner support block 21, the breaking cylinder 41 drives the breaking plate 42 to slide, so that the breaking block 43 is extruded on the crushed wall of the precast pipe pile, the breaking block 43 extrudes and breaks the wall of the precast pipe pile, and then the extrusion block 34 and the breaking block 43 are reset, the inner support block 21 and the ring support frame 31 are both moved downward, the driving cylinder 33 again drives the extrusion block 34 to crush the wall of the precast pipe pile, so that the wall of the precast pipe pile can be crushed layer by layer from top to bottom, the breaking cylinder 41 again drives the breaking plate 42 to make the breaking block 43 extrude and break the wall of the precast pipe pile, and at the same time, the breaking plate 42 can drive the pressing and cutting block 51 to press and cut the upper broken wall of the precast pipe pile through the pushing block 521 and the top block 522, so that the broken wall of the precast pipe pile can be separated from the main reinforcement after being pressed and cut, so that the pile head of the precast pipe pile can be quickly broken through the layer-by-layer crushing, breaking and pressing and cutting, and the main reinforcement of the pile head of the precast pipe pile is not easy to be damaged in the breaking process due to the support of the inner support block 21 to the main reinforcement of the precast pipe pile.

[0069] The above are the preferred embodiments of the application, which do not limit the protection scope of the application, and therefore: any equivalent changes made on the basis of the structure, shape and principle of the application should be covered within the protection scope of the application.

Claims

1. A pile head breaking device for a wind power foundation precast pipe pile, characterized in that, The utility model relates to a prefabricated pipe pile crushing device, which comprises a rack (1), an inner support assembly (2) comprising an inner support block (21) and a lifting piece (22), the inner support block (21) is connected to the rack (1) through the lifting piece (22), the lifting piece (22) is used for driving the inner support block (21) to move up and down in a prefabricated pipe pile, the cross section of the inner support block (21) in the axial direction is a polygon, when the inner support block (21) is located in the prefabricated pipe pile, the side edges of the inner support block (21) are correspondingly supported at the positions where the inner main reinforcement in the prefabricated pipe pile is located, an outer pressing assembly (3) comprising a ring support frame (31), a first lifting part (32), a plurality of driving cylinders (33) and a plurality of extrusion blocks (34), the ring support frame (31) is connected to the rack (1) through the first lifting part (32), the first lifting part (32) is used for driving the ring support frame (31) to move up and down, the ring support frame (31) is used for being sleeved on the prefabricated pipe pile, the driving cylinders (33) are connected to the ring support frame (31), the extrusion blocks (34) are correspondingly connected to the movable ends of the driving cylinders (33), and the driving cylinders (33) are used for driving the extrusion blocks (34) to correspondingly crush the positions of the prefabricated pipe pile and the side walls of the inner support block (21) that are opposite to each other, wherein a crushing assembly (4) and a pressing cutting assembly (5) are arranged at each side wall of the inner support block (21) and on each extrusion block (34), the crushing assembly (4) is used for crushing the pipe wall of the prefabricated pipe pile after crushing, and the pressing cutting assembly (5) is used for pressing and cutting the pipe wall of the prefabricated pipe pile after crushing. The crushing assembly (4) is arranged in a crushing cavity (211) formed in the inner support block (21) or the extrusion block (34), the crushing assembly (4) comprises a crushing cylinder (41), a crushing plate (42) and a plurality of crushing blocks (43), the crushing cylinder (41) is connected to the cavity wall of the crushing cavity (211), the crushing plate (42) is connected to the movable end of the crushing cylinder (41) and is slidably arranged in the crushing cavity (211), the crushing blocks (43) are arranged in plurality and are connected to the crushing plate (42), the crushing blocks (43) slide out of the inner support block (21) or the extrusion block (34), and when the crushing cylinder (41) is in a contracted state, the end face of the crushing blocks (43) away from the crushing plate (42) is flush with the side surface of the inner support block (21) or the side surface of the extrusion block (34). At least one reinforcing rod (44) is arranged on the crushing plate (42), both ends of the reinforcing rod (44) are connected to the cavity wall of the crushing cavity (211), the crushing plate (42) is slidably connected with the reinforcing rod (44), and the reinforcing rod (44) is arranged in a staggered mode with the crushing blocks (43). ​ ​ ​ ​ ​ 2. The pile head breaking device for the wind power foundation precast pipe pile according to claim 1, characterized in that: ​ 3. The pile head breaking device for the wind power foundation precast pipe pile according to claim 1, characterized in that: The pressure cutting assembly (5) comprises a pressure cutting block (51) and a power part (52), the pressure cutting block (51) is provided with at least one, the pressure cutting block (51) is connected to the top end of the inner support block (21) or the extrusion block (34), the pressure cutting blade (511) is arranged on the pressure cutting block (51), the power part (52) is arranged on the inner support block (21) or the extrusion block (34), the power part (52) is used for driving all the pressure cutting blocks (51) to cut the pipe wall of the prefabricated pipe pile through the pressure cutting blade (511), and the pressure cutting blocks (51) on the inner support block (21) are arranged in a staggered manner with the pressure cutting blocks (51) on the extrusion block (34).

4. The pile head breaking device for the wind power foundation precast pipe pile according to claim 3, characterized in that: The pressure cutting block (51) is hinged to the top end of the inner support block (21) or the extrusion block (34), the power part (52) comprises a push block (521) and a top block (522), the push block (521) and the top block (522) are each provided with at least one and one-to-one correspondence, the push block (521) corresponds to the pressure cutting block (51) of the pressure cutting assembly (5) close to itself, the push block (521) is located in the power groove (212) opened on the top surface of the inner support block (21) or the extrusion block (34), the power groove (212) is communicated with the crushing cavity (211), the push block (521) is connected to the crushing plate (42), the top block (522) is slidingly arranged in the power groove (212), the top block (522) is provided with a power inclined surface (5221), the push block (521) abuts against the power inclined surface (5221), when the push block (521) slides with the crushing plate (42), the push block (521) drives the top block (522) to make the pressure cutting block (51) turn to the pipe wall of the prefabricated pipe pile through the power inclined surface (5221).

5. A pile head breaking device for a wind power foundation precast pipe pile according to claim 4, characterized in that: The hinge of the pressure cutting block (51) is provided with a torsion spring (523), the torsion spring (523) is used to drive the pressure cutting block (51) to turn away from the pipe wall of the prefabricated pipe pile.

6. The pile head breaking device for the wind power foundation precast pipe pile according to claim 1, characterized in that: The lifting piece (22) is a hydraulic multi-stage telescopic cylinder.

7. The pile head breaking device for the wind power foundation precast pipe pile according to claim 1, characterized in that: The first lifting part (32) comprises a winding shaft (321) and a lifting rope (322), the winding shaft (321) and the lifting rope (322) are each provided with a plurality of and one-to-one correspondence, the plurality of winding shafts (321) are arranged in a ring and are all rotationally connected to the rack (1), one end of the lifting rope (322) is connected and wound on the winding shaft (321), and the other end is connected to the ring support frame (31).

8. A pile head breaking device for a wind power foundation precast pipe pile according to claim 7, characterized in that: The winding shaft (321) is connected with a worm wheel (323), the worm wheel (323) is meshed with a worm (324) rotationally connected to the rack (1), the worm (324) is connected with a first bevel gear (325), all the first bevel gears (325) are jointly meshed with a second bevel gear (326), and the second bevel gear (326) is connected with a lifting motor (327) mounted on the rack (1).

9. The pile head breaking device for the wind power foundation precast pipe pile according to claim 1, characterized in that: A plurality of lifting rings (11) are arranged in a ring on the rack (1).

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