CN214423351U

CN214423351U - Pile hole protection structure of high-pressure jet grouting water stopping pile

Info

Publication number: CN214423351U
Application number: CN202120172511.7U
Authority: CN
Inventors: 陈树宏
Original assignee: Tianjin Construction Component Engineering Co ltd
Current assignee: Tianjin Construction Component Engineering Co ltd
Priority date: 2021-01-21
Filing date: 2021-01-21
Publication date: 2021-10-19
Anticipated expiration: 2031-01-21

Abstract

The utility model discloses a pile hole protective structure of a high-pressure jet grouting water stop pile, which relates to the technical field of jet grouting water stop pile construction, and comprises a supporting cylinder sleeved at the upper end of a pile hole, wherein the supporting cylinder is divided into a first cylinder body and a second cylinder body which are mutually butted, the first cylinder body comprises a jacking main body and a jacking auxiliary body which are mutually connected in a sliding way, a slide way is formed on the jacking main body, and a first helical rack is arranged in the slide way in a sliding way; a threaded rod is connected to the tightening main body in a threaded manner, the lower end of the threaded rod is rotatably connected with the first helical rack, and a hand wheel is fixedly arranged at the upper end of the threaded rod; and a second helical rack meshed with the first helical rack is fixedly connected to the tightening auxiliary body. The utility model provides a can avoid the stake hole upside to sink, and do benefit to mud discharge, convenient to use's a stake hole protective structure of stagnant water stake is spouted soon to high pressure.

Description

Pile hole protection structure of high-pressure jet grouting water stopping pile

Technical Field

The utility model relates to a spout stagnant water stake construction technical field soon, especially relate to a stake hole protective structure of stagnant water stake is spouted soon to high pressure.

Background

The high-pressure rotary jet pile is characterized by that it utilizes high-pressure rotating nozzle to spray cement slurry into soil layer and mix it with soil body to form continuous lapped cement reinforced body. The construction occupies less land, has small vibration and lower noise, but is easy to pollute the environment, has higher cost, is not suitable for special soil quality which can not solidify sprayed slurry, and in recent years, the high-pressure jet grouting pile is more and more widely applied to projects such as foundation reinforcement treatment, deep foundation pit waterproof curtains and the like.

The construction of the existing foundation pit support structure generally needs to drive a plurality of high-pressure jet grouting piles side by side around the edge of a foundation pit before excavation of the foundation pit, before the high-pressure jet grouting piles are driven, obstacles within meters below the ground of a construction site are cleared according to a selected pile driving place and the regional boundary line of the jet grouting piles are set out on site, then the obstacles are leveled and tamped, then a drilling machine is transported to a target position, a pile hole is drilled at the cleaned target jet grouting pile position, and finally jet grouting is carried out in the drilled pile hole when the pile hole reaches the target depth.

However, the high-pressure jet grouting pile is generally applied to an environment with soft soil, and when a drill is used for drilling, the upper side of a pile hole is collapsed due to vibration of the drill, so that the driving of the high-pressure jet grouting pile is not facilitated.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a high pressure spouts stake hole protective structure of stagnant water stake soon utilizes the tight main part in top that can carry out relative displacement and the tight auxiliary body in top will support a section of thick bamboo and push up tightly stake hole upper end, avoids in the work progress stake hole upper end to sink.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a pile hole protection structure of a high-pressure jet grouting water stop pile comprises a supporting cylinder sleeved at the upper end of a pile hole, wherein the supporting cylinder is divided into a first cylinder body and a second cylinder body, the first cylinder body comprises a jacking main body and a jacking auxiliary body which are connected in a sliding mode, a sliding way is formed in the jacking main body, and a first helical rack is arranged in the sliding way in a sliding mode; a threaded rod is connected to the tightening main body in a threaded manner, the lower end of the threaded rod is rotatably connected with the first helical rack, and a hand wheel is fixedly arranged at the upper end of the threaded rod; and a second helical rack meshed with the first helical rack is fixedly connected to the jacking auxiliary body.

Through adopting above-mentioned technical scheme, installer rotates during the hand wheel, the threaded rod will rotate together, with under the screw-thread fit effect of the tight main part in top, the threaded rod will reciprocate along the direction of height of the tight main part in top, and the first helical rack who rotates the connection with the threaded rod this moment will slide in the slide. Meanwhile, the second helical rack is pushed to move along the direction vertical to the moving direction of the first helical rack under the meshing action of the first helical rack, and the jacking auxiliary body and the jacking main body are subjected to relative displacement along the circumferential direction. When tight vice body in top and the tight main part in top take place relative displacement, first barrel will change along circumferential length, works as when first barrel increases along circumferential length, first barrel will produce the tight power in top to the second barrel and make the butt firm between second barrel and the first barrel, simultaneously first barrel also can outwards carry out the expansion in the certain limit and push up tightly with the soil layer to stake hole upper end, avoids the construction in-process stake hole upper end to sink.

The utility model discloses further set up to: the second barrel is provided with a slot with a circular section on the surface abutted against the first barrel, and the first barrel is provided with an inserting strip which is embedded and matched with the slot on the surface abutted against the second barrel.

Through adopting above-mentioned technical scheme, the cooperation of cutting and slot can be convenient for first barrel and install and dismantle, simultaneously slot and the circular shape of section of cutting keep effectual being connected with the second barrel when first barrel outwards expands.

The utility model discloses further set up to: the lower end of the slot is of a closed structure.

By adopting the technical scheme, after the first barrel and the second barrel are installed, the inserting grooves limit the inserting strips so that the first barrel and the second barrel are aligned in height.

The utility model discloses further set up to: and a limiting plate is fixedly arranged at the upper edge of the second barrel.

Through adopting above-mentioned technical scheme, the limiting plate can be around the stake hole soil property very soft, utilize the expansion of first barrel overlap joint in stake hole upper end when can't jack up tightly in stake hole upper end, avoid a support section of thick bamboo drops, effectively improves stake hole protective structure's use reliability.

The utility model discloses further set up to: and a mud groove is fixedly arranged on the second cylinder body and is communicated with the second cylinder body.

Through adopting above-mentioned technical scheme, mud groove can be convenient for go up the discharge that returns mud when carrying out the jet grouting in the stake hole to the mud discharge passage who combines the scene to set up discharges mud to appointed position, avoids causing environmental pollution, greatly improves stake hole protective structure's feature of environmental protection.

The utility model discloses further set up to: the top height of the first cylinder is higher than that of the second cylinder, and a baffle is fixedly arranged on the second cylinder.

Through adopting above-mentioned technical scheme, when the upward return volume of downthehole mud of stake is great, the baffle can enclose the fender to mud, avoids mud to spill over and cause environmental pollution, further improves stake hole protective structure's feature of environmental protection.

The utility model discloses further set up to: the second barrel comprises a first split body and a second split body which are mutually abutted, a groove is formed in the first split body, and a raised line which is embedded and matched with the groove is formed in the second split body.

Through adopting above-mentioned technical scheme, will behind the second barrel divide into two parts, dismantle at the end of the pile first components of a whole that can function independently and second components of a whole that can function independently fall fast conveniently during a supporting section of thick bamboo, cause the destruction to the pile wall when avoiding a supporting section of thick bamboo to dismantle.

The utility model discloses further set up to: handles are fixedly arranged on the first barrel and the baffle.

Through adopting above-mentioned technical scheme, the handle can effectively improve the dismouting convenience of a support section of thick bamboo.

To sum up, the utility model discloses a beneficial technological effect does:

(1) the supporting cylinder is used for jacking the upper end of the pile hole by utilizing the jacking main body and the jacking auxiliary body which can perform relative displacement, so that the upper end of the pile hole is prevented from collapsing in the construction process;

(2) the limiting plate is arranged on the second barrel body, so that the supporting barrel is prevented from being difficult to tightly push the pile hole and falling when encountering very soft soil, and the use reliability of the pile hole protecting structure is effectively improved;

(3) utilize the mud groove to go up the mud that returns with the stake hole and in time arrange the position of formulating, avoid causing environmental pollution, guarantee this stake hole protective structure's feature of environmental protection.

Drawings

Fig. 1 is a schematic view of the overall structure of an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a tightening main body in an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a pressing pair body in an embodiment of the present invention.

Reference numerals: 1. tightly pushing the main body; 2. tightly pushing the auxiliary body; 3. cutting; 4. a guide plate; 5. a guide groove; 6. a slideway; 7. A first helical rack; 8. a threaded rod; 9. a hand wheel; 10. a second helical rack; 11. a slurry tank; 12. a baffle plate; 13. a slot; 14. a second limiting plate; 15. a second cylinder; 151. a first split body; 152. a second body; 16. a convex strip; 17. a groove; 18. a handle.

Detailed Description

The present invention will now be described more fully hereinafter with reference to the accompanying examples.

Referring to the attached drawing 1, a pile hole protection structure of high-pressure jet grouting water stop pile comprises a supporting cylinder sleeved at the upper end of a pile hole, wherein the supporting cylinder is divided into a first cylinder body and a second cylinder body 15, the first cylinder body comprises a jacking main body 1 and a jacking auxiliary body 2 which are mutually staggered, the attached drawing 2 and the attached drawing 3 are combined, one end, away from each other, of the jacking main body 1 and the jacking auxiliary body 2 is fixedly provided with an inserting strip 3 with a circular cross section, one side, away from the inserting strip 3, of the jacking main body 1 and the jacking auxiliary body 2 is fixedly provided with a guide plate 4, and the jacking main body 1 and the jacking auxiliary body 2 are respectively formed with a guide groove 5 which can be in sliding fit with the guide plate 4. In use, the guide plate 4 on the jacking main body 1 is inserted into the guide groove 5 on the jacking sub-body 2, and the guide plate 4 on the jacking sub-body 2 is inserted into the guide groove 5 on the jacking main body 1. The surface of the jacking main body 1, which is contacted with the jacking auxiliary body 2, is provided with a slideway 6, and a first helical rack 7 is vertically arranged in the slideway 6 in a sliding manner. The upper side of the jacking main body 1 is in threaded connection with a threaded rod 8, the lower end of the threaded rod 8 is rotatably connected with the first helical rack 7, and a hand wheel 9 is fixedly arranged at the upper end of the threaded rod 8. And a second helical rack 10 meshed with the first helical rack 7 is fixedly connected to the tightening auxiliary body. When the hand wheel 9 is rotated, the threaded rod 8 drives the first helical rack 7 to move in the slideway 6, and the second helical rack 10 meshed with the first helical rack 7 moves in a direction perpendicular to the moving direction of the first helical rack 7, so that the jacking auxiliary body 2 and the jacking main body 1 are relatively displaced.

Referring to fig. 1, a mud groove 11 is fixedly arranged on the second cylinder 15, and the mud groove 11 is communicated with the second cylinder 15. The top height of the first cylinder is higher than that of the second cylinder 15, and a baffle plate 12 with the top flush with the top of the first cylinder is fixedly arranged on the second cylinder 15. The second cylinder 15 has a slot 13 formed on a surface thereof abutting against the first cylinder and fitted with the insert 3. The lower end of the slot 13 is of a closed structure. The upper edge of the second cylinder 15 is fixedly provided with a second limit plate 14. The second cylinder 15 includes a first sub-body 151 and a second sub-body 152 abutted against each other, a groove 17 is formed on the first sub-body 151, and a protruding strip 16 fitted with the groove 17 is formed on the second sub-body 152. Handles 18 are fixedly arranged on the first cylinder and the baffle plate 12.

The working principle of the embodiment is as follows: when tight auxiliary body 2 in top and the tight main part 1 in top take place relative displacement, first barrel will change along the length of circumference, when first barrel increases along the length of circumference, first barrel will produce the tight power in top to second barrel 15 and make the butt firm between second barrel 15 and the first barrel, and first barrel also can outwards carry out the expansion in the certain limit in order to push up tightly the soil layer of stake hole upper end simultaneously, avoids the construction in-process stake hole upper end to sink.

The above, only do the preferred embodiment of the present invention, not limit the protection scope of the present invention according to this, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a stake hole protective structure of high pressure jet grouting stagnant water stake, locates a support section of thick bamboo of stake hole upper end including the cover, its characterized in that: the supporting cylinder is divided into a first cylinder body and a second cylinder body (15), the first cylinder body comprises a jacking main body (1) and a jacking auxiliary body (2) which are connected in a sliding mode, a sliding way (6) is formed on the jacking main body (1), and a first helical rack (7) is arranged in the sliding way (6) in a sliding mode; a threaded rod (8) is connected to the tightening main body (1) in a threaded manner, the lower end of the threaded rod (8) is rotatably connected with the first helical rack (7), and a hand wheel (9) is fixedly arranged at the upper end of the threaded rod (8); and a second helical rack (10) meshed with the first helical rack (7) is fixedly connected to the jacking auxiliary body (2).

2. The pile hole protection structure of the high-pressure jet grouting water pile according to claim 1, characterized in that: the second barrel (15) is provided with a slot (13) with a circular cross section on the surface abutted against the first barrel, and the first barrel is provided with an inserting strip (3) which is embedded and matched with the slot (13) on the surface abutted against the second barrel (15).

3. The pile hole protection structure of the high-pressure jet grouting water pile according to claim 2, characterized in that: the lower end of the slot (13) is of a closed structure.

4. The pile hole protection structure of the high-pressure jet grouting water pile according to claim 1, characterized in that: and a second limiting plate (14) is fixedly arranged at the upper edge of the second barrel (15).

5. The pile hole protection structure of the high-pressure jet grouting water pile according to claim 1, characterized in that: and a mud groove (11) is fixedly arranged on the second cylinder body (15), and the mud groove (11) is communicated with the second cylinder body (15).

6. The pile hole protection structure of the high-pressure jet grouting water pile according to claim 2, characterized in that: the top height of the first cylinder is higher than that of the second cylinder (15), and a baffle (12) is fixedly arranged on the second cylinder (15).

7. The pile hole protection structure of the high-pressure jet grouting water pile according to claim 1, characterized in that: the second barrel (15) comprises a first split body (151) and a second split body (152) which are mutually abutted, a groove (17) is formed in the first split body (151), and a protruding strip (16) which is embedded and matched with the groove (17) is formed in the second split body (152).

8. The pile hole protection structure of the high-pressure jet grouting water pile according to claim 4, characterized in that: handles (18) are fixedly arranged on the first cylinder body and the baffle (12).