Matching device of mast type pile extractor applied to extracting waste piles

Abstract

The utility model discloses a matching device of a mast type pile extractor, which is applied to extracting waste piles and comprises a tool type steel guide pipe, the diameter of the tool type steel guide pipe is smaller than the inner diameter of a full casing and larger than the outer diameter of the waste piles, and the top of the tool type steel guide pipe is provided with a plurality of lifting lugs for fixing a pipe lifting steel wire rope to lift the steel guide pipe. A plurality of bottom ring sleeve clamping blocks with downward notches are arranged on the lower portion of the tool type steel guide pipe, and respective lifting rings are arranged at the top ends of two vertical steel wire ropes of a pile pulling steel wire rope used for tensioning a bottom ring sleeve and lifting waste piles. When the tool type steel guide pipe on the two lifting rings and the lifting pipe steel wire rope descends, the bottom ring sleeve is limited in the notches of the bottom ring sleeve clamping blocks, and when the tool type steel guide pipe is arranged on the periphery of the waste pile in a sleeving mode, binding is unfastened, so that the bottom ring sleeve is separated from the bottom ring sleeve clamping blocks under the self-weight acting force of the waste pile lifting steel wire rope and falls into a tying rope on the periphery of the waste pile. According to the auxiliary device, the visibility of the operation process of sleeving the waste pile with the bottom ring of the pile pulling steel wire rope is relatively high, and the accuracy and the reliability of sleeving the waste pile are relatively high.

Description

Technical Field

[0001] The utility model relates to the technical field of waste pile removal, in particular to a matching device of a mast type pile puller used for pulling out waste piles. Background Art

[0002] When carrying out foundation construction such as underground continuous walls in old urban areas and other areas, a large number of waste piles are often encountered. These waste piles are often buried deep and have thick backfill soil, and they need to be cleared before smooth construction can be carried out.

[0003] The pile pulling construction method widely used in the prior art is to use a mast-type pile pulling machine, and adopt a power head to rotate and sink the toothed steel casing in the supporting device, generally called the full casing, to the surrounding of the waste pile with high-pressure water flushing, and the bottom of the full casing is about 1 meter lower than the top of the waste pile. If the length of one section of the full casing is not enough, a flange and a plurality of bolts and nuts can be used to add one or more sections of the full casing, and then the bottom ring of the wire rope, whose lower end is annularly detachably engaged with the inner wall of the lower end of the full casing and whose upper end is engaged with the top of the full casing and extends out of the hanging ring, is hung on the waste pile, and then a hydraulic grab is used to flush and dig out the backfill soil in the full casing above the waste pile, and then the power head is hung with the hanging ring of the wire rope, and then the power head is lifted and the waste pile is pulled out through the wire rope.

[0004] However, the full sleeve in the above supporting device has major shortcomings in the actual construction process: 1. The process of hanging the waste pile with the bottom ring of the wire rope can only be a blind operation. Due to various reasons, such as the detachable clamping of the bottom ring of the wire rope and the bottom end of the full sleeve cannot be smoothly disengaged, the bottom ring of the wire rope cannot be completely fitted on the waste pile, etc., sometimes the bottom ring of the wire rope cannot firmly hang the waste pile, resulting in failure of pile pulling or safety accidents caused by disengagement in the middle. 2. Since the wire rope must be rotated and sunk with the full sleeve, it is easy to cause the detachable clamping part to be disengaged in advance, resulting in the above-mentioned failure of pile pulling or safety accidents, and the long-term rotation friction causes serious wear of the wire rope. For safety reasons, a new wire rope needs to be replaced after a period of wear, which greatly increases the construction cost. 3. In the case where the full sleeve needs to be extended, if the joint of the high-pressure flushing pipe at the flange connection is connected with a hard pipe such as a steel pipe, the joint will be very difficult to install. If a hose connection is used, it will be easily damaged during the rotation of the full sleeve and affect the normal flushing. Moreover, no matter it is a hard pipe joint or a hose joint, as the full sleeve is repeatedly rotated for a long time, its impact and wear make the failure rate higher. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a supporting device for a mast type pile pulling machine used for pulling out waste piles, which has relatively high visibility in the operation process of hanging waste piles with a pile pulling wire rope bottom ring, and relatively high accuracy and reliability in hanging waste piles.

[0006] The technical solution of the utility model is to provide a supporting device of a mast type pile pulling machine used for pulling out waste piles, comprising a full casing provided with a high-pressure water flushing structure; and also comprising a steel pipe assembly for hanging the bottom ring sleeve of a pile pulling wire rope on the waste pile: comprising a tool type steel pipe with a diameter smaller than the inner diameter of the full casing and larger than the outer diameter of the waste pile, a plurality of lifting ears for fixing the pipe hanging wire rope to lift the tool type steel pipe at the top of the tool type steel pipe, a plurality of bottom ring sleeve clamping blocks with notches facing downwards at the bottom of the tool type steel pipe, respective hanging structures at the top ends of two vertical steel wire ropes for tightening the bottom ring sleeve and for lifting the waste pile of the pile pulling wire rope, and a detachable connection structure for making the bottom ring sleeve be limited in the notches of the plurality of bottom ring sleeve clamping blocks when the tool type steel pipe is lowered, and being disassembled when the tool type steel pipe is sleeved on the outer periphery of the waste pile so that the bottom ring sleeve is separated from the bottom ring sleeve clamping blocks under the deadweight force of the pile pulling wire rope and falls into the outer periphery of the waste pile.

[0007] After adopting the above structure, the utility model is applied to the supporting device of the mast type pile puller for pulling out waste piles, which has the following advantages:

[0008] When the whole casing is sunk with high-pressure water jet, such as using a power head to rotate and sink to the surrounding of the waste pile and the bottom of the pipe is lower than the predetermined position of the top of the waste pile and the backfill soil in the whole casing on the top of the waste pile is removed, the whole casing is sunk around the waste pile and the bottom of the pipe is lower than the predetermined position of the top of the waste pile, such as the bottom of the pipe is about 1 meter lower than the top of the waste pile. At this time, the soil between the whole casing and the waste pile at a height of about 1 meter is basically turned into mud with the water and pumped out of the floor surface. Even if there is residual soil, it will not cause resistance to the steel pipe assembly. At this time, other lifting equipment such as the bucket of an excavator can be used to hang the pipe lifting wire rope and can assist manual use of the tool-type steel guide The pipe sinks to the periphery of the waste pile by its own gravity just above the waste pile. At this time, the top of the tool-type steel pipe is still above the top surface of the full casing. The detachable connection structure such as the tether described below is manually disassembled, and the bottom ring sleeve is detached from the bottom ring sleeve block under the deadweight of the pile pulling wire rope and falls into the periphery of the waste pile. Then the tool-type steel pipe is lifted away, and the lower end of the steel wire rope of the mast-type pile pulling machine power head is hung with the respective hanging structures at the top ends of the two vertical steel wire ropes, such as the two hooks at the lower end of the steel wire rope of the power head are hung with the two lifting rings at the top ends of the two vertical steel wire ropes, and then the power head is driven to rise and lift out the waste pile.

[0009] During the operation of using the steel guide tube assembly to put the bottom ring of the pile pulling wire rope around the waste pile, manual assistance can be provided, and people can look down from the top of the entire casing. The visibility of the operation process is relatively high, and the accuracy and reliability of hanging the waste pile are relatively high. It can basically guarantee the success of each pile pulling, and effectively prevent the safety accidents of the pile pulling wire rope being detached from the waste pile during the pile pulling process.

[0010] Since the operation of hanging the bottom ring of the pile pulling wire rope on the waste pile by using the steel pipe assembly is carried out when the whole casing is sunk with high-pressure water jetting, such as using the power head to rotate and sink to the periphery of the waste pile and the bottom of the pipe is lower than the predetermined position of the top of the waste pile and the backfill soil in the whole casing on the top of the waste pile is cleared, that is, it is carried out after all the above processes are completed. Therefore, the pile pulling wire rope avoids premature disengagement during the rotary sinking process of the prior art, which causes the above-mentioned pile pulling failure or safety accident, and avoids the long-term rotation friction of the pile pulling wire rope causing serious wear of the wire rope, and the need to replace new wire ropes more frequently, thereby increasing material costs, thereby significantly reducing construction costs.

[0011] Furthermore, the hanging structure is a lifting ring; the detachable connecting structure is a tether with two ends respectively tied to the lifting ring and the lifting pipe wire rope and can be untied. After adopting the above structure, the structures of the hanging structure and the detachable connecting structure are simple and more in line with the operating habits of workers, further ensuring the accuracy and reliability of hanging the waste piles.

[0012] Furthermore, the bottom ring of the pile pulling wire rope includes a first half ring, the two ends of the first half ring are rings for passing two vertical wire ropes, and the bottom ends of the two vertical wire ropes are second half rings. After the bottom ring of the pile pulling wire rope adopts the above specific structure, the pile pulling wire rope can be disengaged from the notch of the bottom ring by its own weight, and the pile pulling wire rope can be lifted by the power head to be hung on the waste pile with great flexibility and reliability, and the hanging is very firm and stable, which further ensures the accuracy and reliability of hanging the waste pile, can ensure the success of each pile pulling, and can prevent the safety accident of the pile pulling wire rope being detached from the waste pile during the pile pulling process.

[0013] Furthermore, the full sleeve is a multi-section full sleeve formed by screwing a flange and a plurality of bolts and nuts. The high-pressure water pipes of the high-pressure flushing structure are two symmetrically arranged outside the full sleeve. The outsides of the two high-pressure water pipes are provided with steel protective pipes fixed on the outer wall of the full sleeve. The interruption of the steel protective pipe at the flange connection is provided with a high-pressure rigid connector. The high-pressure rigid water pipe joint in the steel protective pipe is connected to two high-pressure flexible connecting pipes with the high-pressure rigid connector, one of which passes through a pair of through holes reserved by the flange. The high-pressure rigid connector and the outsides of the two high-pressure flexible connecting pipes are provided with detachable fixed steel sheaths. After adopting the above structure, it can not only meet the needs of removing waste piles buried deep in the soil, but also facilitate the connection of the high-pressure water pipe at the flange connection, and ensure that the high-pressure rigid connector and the high-pressure flexible connecting pipe will not be impacted or damaged during the rotation of the full sleeve.

[0014] Furthermore, the steel jacket includes a pair of upper baffles fixed on the upper flange and the upper full sleeve, a vertically upward arc-shaped outer baffle screwed to the pair of upper baffles via multiple bolts and nuts, and a top cover fixed to the top of the vertically upward arc-shaped outer baffle; the steel jacket also includes a pair of lower baffles fixed on the lower flange and the lower full sleeve, a vertically downward arc-shaped outer baffle screwed to the pair of lower baffles via multiple bolts and nuts, and a bottom cover fixed to the bottom of the vertically downward arc-shaped outer baffle. After the steel jacket adopts the above specific structure, it is convenient to install and remove the steel jacket, and the structure is firm and reliable, which can further ensure the excellent performance and long service life of the high-pressure water pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a three-dimensional structural diagram of the steel conduit assembly in the supporting device of the utility model. Figure 1 (The middle one is the way of drawing with length omitted).

[0016] Figure 2 This is a three-dimensional structural diagram of the steel conduit assembly in the supporting device of the utility model. Figure 2 (The middle one is the way of drawing with length omitted).

[0017] Figure 3 yes Figure 1 and Figure 2 Schematic diagram of the structure of the pile pulling wire rope (the vertical wire rope is omitted in the drawing).

[0018] Figure 4 It is a three-dimensional structural schematic diagram of the entire sleeve in the supporting device of the utility model (the two ends are drawn with the length omitted).

[0019] Figure 5 yes Figure 4 Schematic diagram of the structure of the top cover of the steel casing and the vertical upper and lower arc-shaped outer baffles (the length of the two ends is omitted; the bolts that screw the arc-shaped outer baffles to the side baffles only show the nuts at the inner ends and the ends protruding from the nuts).

[0020] Figure 6 yes Figure 5 Schematic diagram of the explosion structure after the top cover and the vertically upward and downward arc-shaped outer baffles are turned 180°.

[0021] As shown in the figure:

[0022] 1. Full sleeve assembly, 11. Full sleeve, 111. Upper full sleeve, 112. Lower full sleeve, 12. High-pressure water pipe, 121. High-pressure rigid connector, 122. High-pressure flexible connector, 13. Flange, 131. Upper flange, 132. Lower flange, 14. Steel protective pipe, 15. Steel jacket, 151. Upper baffle, 152. Vertically upward arc-shaped outer baffle, 153. Top cover, 154. Lower baffle, 155. Vertically downward arc-shaped outer baffle, 156. Bottom cover, 16. First bolt, 17. First nut, 18. Strengthening rib, 19. Second bolt, 110. Second nut;

[0023] 2. Steel conduit assembly, 21. Tool-type steel conduit, 211. Lifting lug, 212. Bottom ring block, 2121. Notch, 22. Pile pulling wire rope, 221. Bottom ring, 2211. First half ring, 22111. Ring, 2212. Second half ring, 222. Vertical wire rope, 2221. Lifting ring, 23. Pipe hanging wire rope, 231. Hanging ring;

[0024] 3. Tie the rope. DETAILED DESCRIPTION

[0025] The specific implementation methods of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these specific implementation methods is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical means involved in each specific implementation method of the present invention described below can be combined with each other as long as there is no conflict between them.

[0026] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 shown.

[0027] The utility model is applied to a supporting device of a mast-type pile puller for pulling out waste piles, and includes a full sleeve 11 provided with a high-pressure water flushing structure. The full sleeve 11 is also called a steel sleeve. The inner diameter of the full sleeve 11 is generally greater than the outer diameter of the waste pile by about 500 mm. The bottom end of the full sleeve 11 is generally provided with a plurality of alloy teeth along the circumference. The alloy teeth can adopt a welding structure or a screw-connected replaceable structure. A circle of reinforcing hoop can be welded on the outer circle of the bottom end of the full sleeve 11. The high-pressure water flushing structure generally includes a high-pressure water pump connected to a water source such as a tap water pipe and a high-pressure water pipe 12, a high-pressure water pipe 12 arranged on the full sleeve 11, a plurality of high-pressure water flushing nozzles arranged at the bottom end of the full sleeve 11, a pumping pump and a mud pool for pumping back mud, etc. The high pressure is generally 2.6-4MPa. The whole casing 11 can be rotated and sunk to a predetermined position around the waste pile by using a power head in combination with high-pressure water flushing, or the whole casing 11 can be pressed to a predetermined position around the waste pile by using an impact hammer or a static pressure device in combination with high-pressure water flushing. The predetermined position is, for example, around the waste pile and the bottom of the whole casing 11 is about 1 meter lower than the top of the waste pile. The above is the prior art.

[0028] The utility model is applied to the supporting device of the mast type pile pulling machine for pulling out the waste pile, and also includes a steel pipe assembly 2 for hanging the waste pile with a bottom ring 221 of a pile pulling wire rope 22 when the full casing 11 is sunk into the periphery of the waste pile with high pressure water flushing and the bottom of the pipe is lower than the predetermined position of the top of the waste pile and the backfill soil in the full casing at the top of the waste pile is removed: the steel pipe assembly 2 includes a tool type steel pipe 21 with a diameter smaller than the inner diameter of the full casing 11 and a diameter larger than the outer diameter of the waste pile, a plurality of lifting ears 211 such as two lifting ears 211 for fixing the lifting wire rope 23 on the top of the tool type steel pipe 21, and a plurality of notches 21 at the bottom of the tool type steel pipe 21. The bottom ring block 212 facing downwards, the top ends of the two vertical steel wire ropes 222 for tightening the bottom ring block 221 and for lifting the waste pile have their own hanging structures, and the two hanging structures and the pipe lifting wire rope 23 or multiple pieces such as two lifting ears 211 are provided with a detachable connection structure that allows the bottom ring block 221 to be confined in the gaps 2121 of the multiple bottom ring block blocks 212 when the tool-type steel pipe 21 is lowered, and the bottom ring block 221 is disassembled when the tool-type steel pipe 21 is sleeved on the outer periphery of the waste pile, so that the bottom ring block 212 is separated from the bottom ring block 212 under the deadweight of the pile pulling wire rope 22 and falls into the outer periphery of the waste pile. The steel pipe assembly 2 can also be called a steel pipe structure. The pipe hanging wire rope 23 is fixed to the two hanging ears 211 and can be fixed by using respective hanging rings 231 to cover the hanging ears 211. The hanging ring 231 is formed by locking the end of the pipe hanging wire rope 23 with a wire rope lock.

[0029] The hanging structure is preferably a lifting ring 2221. The detachable structure is preferably a tether 3 with two ends respectively tied to the lifting ring 2221 and the pipe hanging wire rope 23 and can be untied. The tying can be understood as bundling, and the tool-type steel pipe 21 is tied when it is lowered, and it is untied when the pile pulling wire rope 22 is to be lowered. When the waste pile needs to be lifted, the two hooks at the lower end of the power head wire rope are hung on the two lifting rings 2221 and dragged upward so that the bottom ring sleeve 221 of the pile pulling wire rope 22 is wrapped around the waste pile to lift the waste pile.

[0030] Since the tether 3 will not be subjected to impact and wear, etc., ordinary hemp rope, palm rope, nylon rope, iron wire, etc. can be used. The lifting ring 2221 can be a lifting ring 2221 formed by locking the end of the pile pulling steel wire rope 22 itself with a steel wire rope lock, or a lifting ring formed by a closed loop formed by locking the end of the pile pulling steel wire rope 22 itself with a steel wire rope lock, and then sleeved with a round steel ring. The hanging structure can also be a hook formed by locking the end of the pile pulling steel wire rope 22 itself with a steel wire rope lock, and then sleeved with a hook. The detachable connection structure can also be a hook formed by locking the end of the pile pulling steel wire rope 22 itself with a steel wire rope lock, and then sleeved with a hook, and directly hung on the hanging pipe steel wire rope 23. The detachable connection structure can also be a spring with hooks fixed at both ends. The plurality of bottom ring sleeve clamping blocks 212 include two, but are preferably three or four as shown in the figure, and can be evenly distributed along the circumference.

[0031] The bottom ring sleeve 221 of the pile pulling wire rope 22 comprises a first half ring sleeve 2211 , both ends of the first half ring sleeve 2211 are rings 22111 for passing two vertical wire ropes, and the bottom ends of the two vertical wire ropes 222 are second half ring sleeves 2212 .

[0032] The pile pulling wire rope 22 is also called the waste pile lifting wire rope. The pipe hanging wire rope 23 is also called the tool type steel pipe lifting wire rope.

[0033] The full sleeve 11 is a multi-section full sleeve 11 formed by screwing a flange 13 and a plurality of bolts and nuts, such as a plurality of first bolts 16 and a plurality of first nuts 17. The high-pressure water pipes 12 of the high-pressure flushing structure are two symmetrically arranged outside the full sleeve 11. The outsides of the two high-pressure water pipes 12 have steel protection pipes 14 fixed, such as welded, on the outer wall of the full sleeve 11. The steel protection pipe interruption at the connection of the flange 13 has a high-pressure rigid connector 121. The high-pressure rigid water pipe joint in the steel protection pipe 14 is connected to the high-pressure rigid connector 121 by two high-pressure flexible connecting pipes 122, one of which passes through a pair of through holes reserved by the flange 13. The high-pressure rigid connector 121 and the outsides of the two high-pressure flexible connecting pipes 122 have a detachably fixed steel sheath 15. The steel protection pipe 14 can be a channel steel or a semicircular steel pipe as shown in the figure.

[0034] The flange 13 includes an upper flange 131 and a lower flange 132. The steel jacket 15 includes a pair of upper baffles 151 fixed such as welded on the upper flange 131 and the upper full sleeve 111, a vertically upward arc-shaped outer baffle 152 screwed to the pair of upper baffles 151 via multiple bolts and nuts, and a top cover 153 fixed such as welded to the top of the vertically upward arc-shaped outer baffle 152. The steel jacket 15 also includes a pair of lower baffles 154 fixed such as welded on the lower flange 132 and the lower full sleeve 112, a vertically downward arc-shaped outer baffle 155 screwed to the pair of lower baffles 154 via multiple bolts and nuts, and a bottom cover 156 fixed such as welded to the bottom of the vertically downward arc-shaped outer baffle 155. The specific structure of the side baffle plate and the vertical arc-shaped outer baffle plate being screwed together by multiple bolts and nuts can be as follows: there are multiple bolt through holes, such as two, on each of the two upper baffle plates 151, and there are multiple bolt through holes, such as two, on both sides of the vertical arc-shaped outer baffle plate 152, and the two bolt through holes on both sides of the vertical arc-shaped outer baffle plate 152 are welded with respective second nuts 110 on the inner sides, and the second bolts 19 are passed through the bolt through holes of the upper baffle plate 151 and the bolt through holes on the sides of the vertical arc-shaped outer baffle plate 152 one by one, and then tightened on the second nuts 110. There are multiple bolt holes, such as two, on the two lower baffles 154, and multiple bolt holes, such as two, on both sides of the vertically downward arc-shaped outer baffle 155. The inner sides of the two bolt holes on both sides of the vertically downward arc-shaped outer baffle 155 are welded with respective second nuts 110. The second bolts 19 pass through the bolt holes of the lower baffles 154 and the bolt holes on the sides of the vertically downward arc-shaped outer baffle 155 one by one and are tightened on the second nuts 110. Multiple reinforcing ribs 18 distributed along the circumference can be welded on the upper flange 131 and the upper full sleeve 111, and multiple reinforcing ribs 18 distributed along the circumference can also be welded on the lower flange 132 and the lower full sleeve 112. For ease of description, the parts described in this section and the previous section can be collectively referred to as the full sleeve assembly 1.

[0035] The above unmarked parts, structures or quantities are not shown in the drawings, and some parts are not marked in the drawings. The drawings are only for reference. If there is any inconsistency between the drawings and the text description or between the drawings, the text description shall prevail.

[0036] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A supporting device for a mast-type pile puller used for pulling out waste piles, comprising a full casing provided with a high-pressure water flushing structure; characterized in that: The utility model also comprises a steel conduit assembly for hanging the bottom ring sleeve of the pile pulling wire rope on the waste pile: the utility model steel conduit comprises a diameter smaller than the inner diameter of the full casing and larger than the outer diameter of the waste pile, a plurality of lifting ears for fixing the pipe lifting wire rope on the top of the utility model steel conduit for lifting the utility model steel conduit, a plurality of bottom ring sleeve clamping blocks with notches facing downwards on the lower part of the utility model steel conduit, a respective hanging structure is arranged on the top ends of two vertical steel wire ropes of the pile pulling wire rope for tightening the bottom ring sleeve and lifting the waste pile, a detachable connecting structure is arranged on the two hanging structures and the pipe lifting wire rope or a plurality of lifting ears, so that the bottom ring sleeve is confined in the notches of the plurality of bottom ring sleeve clamping blocks when the utility model steel conduit is lowered, and the utility model steel conduit is disassembled when it is sleeved on the outer periphery of the waste pile, so that the bottom ring sleeve is separated from the bottom ring sleeve clamping blocks under the deadweight force of the pile pulling wire rope and falls into the outer periphery of the waste pile.

2. The supporting device of the mast type pile puller used for pulling out waste piles according to claim 1, characterized in that: The hanging structure is a lifting ring; the detachable connecting structure is a tether with two ends respectively tied to the lifting ring and the lifting pipe wire rope and can be untied.

3. The supporting device of the mast type pile puller used for pulling out waste piles according to claim 1, characterized in that: The bottom ring sleeve of the pile pulling wire rope comprises a first half ring sleeve, the two ends of the first half ring sleeve are rings for wearing two vertical wire ropes, and the bottom ends of the two vertical wire ropes are a second half ring sleeve.

4. The supporting device of the mast type pile puller used for pulling out waste piles according to claim 1, characterized in that: The full sleeve is a multi-section full sleeve formed by screwing a flange and multiple bolts and nuts. The high-pressure water pipes of the high-pressure flushing structure are two symmetrically arranged on the outside of the full sleeve. The outsides of the two high-pressure water pipes are provided with steel protective pipes fixed on the outer wall of the full sleeve. The interruption of the steel protective pipe at the flange connection is provided with a high-pressure rigid connector. The high-pressure rigid water pipe joint in the steel protective pipe is connected to the high-pressure rigid connector with two high-pressure flexible connecting pipes, one of which passes through a pair of through holes reserved by the flange. The high-pressure rigid connector and the outsides of the two high-pressure flexible connecting pipes are provided with a detachable and fixed steel sheath.

5. The supporting device of the mast type pile puller used for pulling out waste piles according to claim 4, characterized in that: The steel jacket includes a pair of upper side baffles fixed on the upper flange and the upper full sleeve, a vertically upward arc-shaped outer baffle screwed to the pair of upper side baffles via multiple bolts and nuts, and a top cover fixed to the top of the vertically upward arc-shaped outer baffle; it also includes a pair of lower side baffles fixed on the lower flange and the lower full sleeve, a vertically downward arc-shaped outer baffle screwed to the pair of lower side baffles via multiple bolts and nuts, and a bottom cover fixed to the bottom of the vertically downward arc-shaped outer baffle.

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