High-pressure jet grouting pile rotary drilling device for water-rich strata

Abstract

The utility model provides a high-pressure rotary jet pile rotary drilling device for water-rich strata, including a rotary jet drilling rig including a drilling rig and a trolley. A transfer mechanism is provided on one side of the rotary jet drilling rig, and a pushing mechanism is provided on the transfer mechanism. The pushing mechanism moves on the transfer mechanism. The drilling rig is installed on the pushing mechanism, and a rotating mechanism is provided on the drilling rig. The rotary jet drilling rig is provided with a connecting seat. The overall device has a high degree of automation. The overall device arranges multiple rotary jet piles in a circular array, avoiding the steps of laying out the positioning holes around the steel pipe piles in the early stage, optimizing the steps, and saving a lot of time. The overall device makes a circular rotation on the transfer mechanism through the drilling rig, avoiding the existing rotary jet drilling rig moving the position of the overall equipment, adjusting the position of the overall equipment multiple times, wasting a lot of time, and causing low construction efficiency. The overall device forms a water-stop curtain through multiple interlocking rotary jet piles to replace the structure of the steel casing wall, which can save a lot of construction costs.

Description

Technical Field

[0001] The utility model relates to the field of stratum rotary drilling, in particular to a rotary drilling device for high-pressure rotary jet piles in water-rich strata. Background Art

[0002] At present, in the process of industrial plant construction, bored cast-in-place piles are mostly used in the construction of the main structure pile foundation, and the conventional hole-making methods are mud wall drilling and dry drilling. However, when the groundwater level is located at the bottom range of the pile foundation, the bottom hole wall cannot be maintained stable by the dry drilling process, the mud wall drilling process is inefficient, and the overall steel casing wall is expensive. The steel casing can be waterproofed by using a circular array of multiple rows of jet pile water-stop curtains instead of steel casings. However, the existing jet pile water-stop curtain drilling is performed by drilling holes one by one by a jet drilling rig. After drilling a hole, the jet drilling rig needs to be moved. By moving the position of the jet drilling rig, the position of the drilling rig is adjusted multiple times so that the drilling rig is located above the drill hole. The position of the jet drilling rig is repeatedly adjusted in this way, and multiple jet piles are interlocked to form a water-stop curtain, which wastes a lot of time and has low construction efficiency. At the same time, the drilling rig needs to align the drilling position each time, which further reduces the construction efficiency. For this reason, we propose a high-pressure jet pile water-rich stratum rotary drilling device to solve the above problems. Utility Model Content

[0003] The utility model provides a rotary drilling device for high-pressure rotary jet piles in water-rich strata, which solves the problem that the rotary jet pile water-stop curtain drilling is performed by drilling holes at each position by a rotary jet drill rig. After drilling a hole, the rotary jet drill rig needs to be moved and the position of the rotary jet drill rig needs to be repeatedly adjusted, which wastes a lot of time and has low construction efficiency. At the same time, the drill rig needs to be aligned with the drilling position each time, which further reduces the construction efficiency.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a high-pressure rotary jet pile rotary drilling device for water-rich strata, including a rotary jet drilling rig including a drilling rig and a trolley, a transfer mechanism is provided on one side of the rotary jet drilling rig, a pushing mechanism is provided on the transfer mechanism, the pushing mechanism moves on the transfer mechanism, the drilling rig is installed on the pushing mechanism, the drilling rig is provided with a rotating mechanism, and the rotary jet drilling rig is provided with a connecting seat.

[0005] In a preferred solution, the track transfer mechanism includes a ring frame, a ring rail is provided on the ring frame, a first gear ring is provided on the inner side of the ring frame, a first gear is provided on one side of the first gear ring, a first motor is provided on the first gear, the first gear is meshed with the first gear ring, and the first motor is installed on the pushing mechanism.

[0006] In a preferred solution, a transverse groove is provided at the bottom of the drilling rig, the pushing mechanism comprises a transverse plate, a first arc-shaped slide groove is provided at the bottom of the transverse plate, and the ring rail abuts against the first arc-shaped slide groove.

[0007] In a preferred solution, a vertical rail is provided on the horizontal plate, the vertical rail abuts against the horizontal groove, and a cylinder is provided on the horizontal plate, one end of the cylinder is connected to the drilling rig.

[0008] In a preferred solution, the rotating mechanism comprises a rectangular column, which is mounted on the drilling rig, an annular column is arranged on the outer wall of the rectangular column, a second annular rail is arranged on the annular column, and a sliding seat is arranged on the second annular rail.

[0009] In a preferred solution, a second arcuate slot is provided on the sliding seat, the second ring rail abuts against the second arcuate slot, a second motor is provided on the sliding seat, a second gear is provided on the second motor, a second gear ring is provided on the inner wall of the ring column, and the second gear ring meshes with the second gear.

[0010] In a preferred solution, a rotating seat is provided on one side of the sliding seat, and a plurality of supporting columns are provided between the rectangular column and the ring column.

[0011] In a preferred embodiment, the connecting seat includes a second rotating seat, a rotating column is provided at the bottom of the second rotating seat, the rotating column is rotatably connected to the trolley, a second cylinder is provided at the bottom of the second rotating seat, a friction plate is provided at one end of the second cylinder, and the second rotating seat is installed on the trolley.

[0012] In a preferred solution, an oil cylinder is provided between the connecting seat and the rotating mechanism, one end of the oil cylinder is rotatably connected to the second rotating seat, and the other end of the oil cylinder is rotatably connected to the rotating mechanism.

[0013] In a preferred solution, a plurality of telescopic legs are provided at the bottom of the track switching mechanism, and universal wheels are provided at the bottom of the telescopic legs.

[0014] The beneficial effects of the utility model are as follows: the rotary jet drilling rig is moved so that the center of the transfer mechanism of the rotary jet drilling rig is located directly above the pile foundation to be made, the vertical rail of the pushing mechanism is driven to fix the center position of the drilling rig and the transfer mechanism, the drilling rig is driven to drill holes to form rotary jet piles, and after the drilling rig is completed, the first motor of the transfer mechanism is driven to rotate the drilling rig on the ring frame, and while driving the transfer mechanism, the rotating mechanism and the oil cylinder are driven to make the sliding seat close to one side of the trolley, the oil cylinder is contracted to rotate the connecting seat, and the second cylinder at the bottom of the connecting seat is driven to make the friction plate of the second cylinder abut against the bottom of the second rotating seat to fix the connecting seat, and the second hole is drilled by the drilling rig to form a rotary jet pile, and the second cylinder of the connecting seat is released after drilling, and the above steps are repeated until the drilling rig completes multiple circular arrays of rotary jet piles, and the multiple rotary jet piles are engaged with each other.

[0015] After the drilling rig completes an outer circle array of rotary jet piles, it drives the pushing mechanism to adjust the distance between the drilling rig and the center of the transfer mechanism. The overall device completes the inner circle array of rotary jet piles again. The inner circle rotary jet piles also engage with the outer circle rotary jet piles.

[0016] The overall device has a high degree of automation. It can drive the first motor with the same number of turns to make the hole spacing on the circle constant, so that multiple jet grouting piles can be arranged in a circular array, avoiding the steps of laying out the positioning holes around the steel pipe piles in the early stage, optimizing the steps and saving a lot of time. The overall device makes a circular rotation on the transfer mechanism through the drilling rig, avoiding the existing jet grouting drilling rig moving the position of the overall equipment, adjusting the position of the overall equipment multiple times, wasting a lot of time and causing low construction efficiency. The overall device forms a water-stop curtain through multiple interlocking jet grouting piles to replace the steel casing wall structure, which can save a lot of construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0018] Figure 1 It is an axial side view of the overall structure of the utility model;

[0019] Figure 2 It is a front view of the overall structure of the utility model;

[0020] Figure 3 It is an axial side view of the rail-switching mechanism of the utility model;

[0021] Figure 4 It is a front view of the rotating mechanism of the utility model;

[0022] Figure 5 It is an exploded view of the rotating mechanism of the utility model;

[0023] Figure 6 It is an axonometric view of a local structure of the utility model;

[0024] Figure 7 It is an axial side view of the drilling rig and the pushing mechanism of the utility model;

[0025] Figure 8 This utility model Figure 7 A magnified view of

[0026] In the figure: a rotary jet drilling rig 1; a drilling rig 101; a transverse groove 102; a trolley 103; a track switching mechanism 2; a ring frame 201; a ring rail 202; a first gear ring 203; a first motor 204; a first gear 205; a pushing mechanism 3; a transverse plate 301; a first arcuate chute 302; a vertical rail 303; a cylinder 304; a rotating mechanism 4; a rectangular column 401; a ring column 402; a second ring rail 403; a sliding seat 404; a second arcuate chute 4041; a second motor 405; a second gear 406; a rotating seat 407; a second gear ring 408; a connecting seat 5; a rotating column 501; a second rotating seat 502; a telescopic leg 6; a universal wheel 601; and a cylinder 7. DETAILED DESCRIPTION

[0027] Embodiment 1:

[0028] like Figure 1-8 In the invention, a high-pressure rotary jet pile rotary drilling device for water-rich strata comprises a rotary jet drilling rig 1 including a drilling rig 101 and a trolley 103. A transfer mechanism 2 is provided on one side of the rotary jet drilling rig 1. A pushing mechanism 3 is provided on the transfer mechanism 2. The pushing mechanism 3 moves on the transfer mechanism 2. The drilling rig 101 is installed on the pushing mechanism 3. A rotating mechanism 4 is provided on the drilling rig 101. A connecting seat 5 is provided on the rotary jet drilling rig 1. With this structure, the rotary jet drilling rig 1 is moved so that the center of the transfer mechanism 2 of the rotary jet drilling rig 1 is located directly above the pile foundation to be made, the vertical rail 303 of the pushing mechanism 3 is driven to fix the center position of the drilling rig 101 and the transfer mechanism 2, and the drilling rig 101 is driven to drill holes to form rotary jet piles. After the drilling rig 101 is completed, the first motor 204 of the transfer mechanism 2 is driven to rotate the drilling rig 101 on the ring frame 201. While driving the transfer mechanism 2, the rotating mechanism 4 and the cylinder 7 are driven to make the sliding seat 404 close to one side of the trolley 103, the cylinder 7 is retracted to rotate the connecting seat 5, and the second cylinder at the bottom of the connecting seat 5 is driven to make the friction plate of the second cylinder abut against the bottom of the second rotating seat 502 to fix the connecting seat 5, and the drilling rig 101 drills a second hole to form a rotary jet pile. After drilling, the second cylinder of the connecting seat 5 is released, and the above steps are repeated until the drilling rig 101 completes a plurality of circular arrays of rotary jet piles, and the plurality of rotary jet piles are engaged with each other.

[0029] After the drilling rig 101 completes an outer circle of circumferential array of jet grouting piles, it drives the pushing mechanism 3, adjusts the distance between the drilling rig 101 and the center of the switching mechanism 2, and the entire device completes the inner circle of circumferential array of jet grouting piles again. The inner circle of jet grouting piles also mesh with the outer circle of jet grouting piles.

[0030] The overall device has a high degree of automation. It can drive the first motor 204 with the same number of turns to make the hole spacing of the circle constant, so that multiple rotary jet piles are arranged in a circular array, avoiding the steps of laying out the positioning holes around the steel pipe piles in the early stage, optimizing the steps, and saving a lot of time. The overall device rotates in a circle on the switching mechanism 2 through the drilling rig 101, avoiding the existing rotary jet drilling rig moving the position of the overall equipment, adjusting the position of the overall equipment multiple times, wasting a lot of time, and low construction efficiency. The overall device forms a water-stop curtain through multiple interlocking rotary jet piles to replace the steel casing wall structure, which can save a lot of construction costs.

[0031] In a preferred solution, the rail-switching mechanism 2 includes a ring frame 201, a ring rail 202 is provided on the ring frame 201, a first gear ring 203 is provided on the inner side of the ring frame 201, a first gear 205 is provided on one side of the first gear ring 203, a first motor 204 is provided on the first gear 205, the first gear 205 is meshed with the first gear ring 203, and the first motor 204 is installed on the pushing mechanism 3. With this structure, the first motor 204 is driven to rotate the pushing mechanism 3 on the rail-switching mechanism 2, so that the drilling rig 101 rotates on the rail-switching mechanism 2.

[0032] Move the jet grouting drill 1 so that the center of the transfer mechanism 2 of the jet grouting drill 1 is located directly above the pile foundation to be made, drive the vertical rail 303 of the pushing mechanism 3 to fix the center position of the drilling rig 101 and the transfer mechanism 2, drive the drilling rig 101 to drill holes to form jet grouting piles, and after the drilling rig 101 is completed, drive the first motor 204 of the transfer mechanism 2 to rotate the drilling rig 101 on the ring frame 201, and while driving the transfer mechanism 2, drive the rotating mechanism 4 and the cylinder 7 to make the sliding seat 404 close to one side of the trolley 103.

[0033] In a preferred solution, a transverse groove 102 is provided at the bottom of the drilling rig 101 , the pushing mechanism 3 includes a transverse plate 301 , a first arc-shaped slide groove 302 is provided at the bottom of the transverse plate 301 , and the ring rail 202 abuts against the first arc-shaped slide groove 302 .

[0034] In the preferred solution, a vertical rail 303 is provided on the horizontal plate 301, the vertical rail 303 abuts against the horizontal groove 102, and a cylinder 304 is provided on the horizontal plate 301, one end of the cylinder 304 is connected to the drilling machine 101. According to this structure, the cylinder 304 is driven to slide the drilling machine 101 along the vertical rail 303 to adjust the distance between the drilling machine 101 and the center of the track transfer mechanism 2.

[0035] In a preferred solution, the rotating mechanism 4 includes a rectangular column 401, which is mounted on the drilling rig 101. A ring column 402 is provided on the outer wall of the rectangular column 401. A second ring rail 403 is provided on the ring column 402. A sliding seat 404 is provided on the second ring rail 403. With this structure, the rectangular column 401 is mounted on the drilling rig 101, so that the rotating mechanism 4 is mounted on the top of the drilling rig 101.

[0036] In the preferred solution, the sliding seat 404 is provided with a second arc-shaped slide groove 4041, the second ring rail 403 abuts against the second arc-shaped slide groove 4041, the sliding seat 404 is provided with a second motor 405, the second motor 405 is provided with a second gear 406, the inner wall of the ring column 402 is provided with a second gear ring 408, and the second gear ring 408 is meshed with the second gear 406. With this structure, the second motor 405 is driven to rotate the second gear 406, so that the sliding seat 404 slides along the second ring rail 403 to adjust the position of the sliding seat 404. The oil cylinder 7 is rotatably connected to the rotating seat 407. When the drilling rig 101 is drilling, the length of the oil cylinder 7 is constant, and the oil cylinder 7 plays a role in supporting the drilling rig 101.

[0037] In a preferred solution, a rotating seat 407 is provided on one side of the sliding seat 404 , and a plurality of supporting columns are provided between the rectangular column 401 and the annular column 402 .

[0038] In a preferred solution, the connecting seat 5 includes a second rotating seat 502, a rotating column 501 is provided at the bottom of the second rotating seat 502, the rotating column 501 is rotatably connected to the trolley 103, a second cylinder is provided at the bottom of the second rotating seat 502, a friction plate is provided at one end of the second cylinder, and the second rotating seat 502 is mounted on the trolley 103. With this structure, when the drilling rig 101 is drilling, the length of the oil cylinder 7 is constant, and the second cylinder is extended so that the friction plate at one end of the second cylinder abuts against the bottom of the second rotating seat 502, so that the position of the connecting seat 5 is determined.

[0039] In a preferred solution, an oil cylinder 7 is provided between the connecting seat 5 and the rotating mechanism 4 , one end of the oil cylinder 7 is rotatably connected to the second rotating seat 502 , and the other end of the oil cylinder 7 is rotatably connected to the rotating mechanism 4 .

[0040] In the preferred solution, a plurality of telescopic legs 6 are provided at the bottom of the track switching mechanism 2, and a universal wheel 601 is provided at the bottom of the telescopic legs 6. According to this structure, the telescopic legs 6 include an outer sleeve and an inner sleeve, the inner sleeve slides against the outer sleeve, and an extension cylinder is provided between the outer sleeve and the inner sleeve.

[0041] Embodiment 2:

[0042] In combination with Example 1, the construction method of the rotary drilling device for high-pressure jet grouting piles in water-rich strata is further described. S1: First, remove organic residues, turf, crop roots, and dig out all tree roots. According to the site leveling elevation, use excavation to level the site to reduce the transportation of waste soil.

[0043] S2: Set a jet grouting water-stop curtain 250mm outside the pile foundation contour line, set a jet grouting pile reinforcement and seepage-proof pile inside the pile foundation, and the groundwater level is 1.5m below the pile bottom as a solid pile. Determine the spacing of the jet grouting pile holes to determine the number of rotations of the first motor 204, and the error of each hole is no more than 5cm, drive multiple telescopic legs 6, and accurately measure the ground elevation of the hole mouth.

[0044] S3: Use a single-weight pipe, and follow the order of constructing the water-stop curtain first and then the reinforced seepage-proof piles. Aim the jetting drill 1 at the hole, first conduct a ground test jetting to adjust the jetting pressure, control the drilling speed to no more than 1m / min, and lower the jetting pipe to the jetting depth. The lifting speed is no more than 20cm / min.

[0045] S4: The jet pipe of the drilling rig 101 is lowered to the designed depth and the prepared slurry is fed in. During grouting, the slurry is injected at high pressure through the pipeline of the grouting pump, and the pumping pressure is 25-35 MPa. The grouting starts from top to bottom, and the grouting is rotated and lifted until the designed final grouting height is reached and the grouting stops.

[0046] S5: After the high-pressure jet grouting pile passes the strength test, consolidated soil is formed around the periphery and bottom of the pile foundation to effectively block groundwater, and the jet grouting drill 1 is used to complete the pile foundation construction according to the dry operation hole-forming process. S6: Drive the transfer mechanism 2 structure to rotate the drilling rig 101 on the transfer mechanism 2, move the position of the drilling rig 101, drive the pushing mechanism 3, move the position of the drilling rig 101 relative to the center of the transfer mechanism 2, so that the drilling rig 101 is aligned with the drill hole, drive the transfer mechanism 2, and drive the rotating mechanism 4 and the oil cylinder 7 at the same time, so that the sliding seat 404 is close to the side of the trolley 103, and the oil cylinder 7 is retracted to rotate the connecting seat 5, and the second cylinder at the bottom of the connecting seat 5 is driven so that the friction plate of the second cylinder is against the bottom of the second rotating seat 502 to fix the connecting seat 5.

[0047] Repeat S1 to S6 to perform high-pressure jet grouting pile drilling on multiple positioning holes.

[0048] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limitations of the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. High-pressure jet grouting pile water-rich stratum rotary drilling device, characterized by: The invention comprises a rotary jet drilling rig (1) comprising a drilling rig (101) and a trolley (103); a track transfer mechanism (2) is provided on one side of the rotary jet drilling rig (1); a pushing mechanism (3) is provided on the track transfer mechanism (2); the pushing mechanism (3) moves on the track transfer mechanism (2); the drilling rig (101) is mounted on the pushing mechanism (3); a rotating mechanism (4) is provided on the drilling rig (101); and a connecting seat (5) is provided on the rotary jet drilling rig (1); the track transfer mechanism (2) comprises a ring frame (201); a ring rail (202) is provided on the ring frame (201); a first gear ring (203) is provided on the inner side of the ring frame (201); a first gear (205) is provided on one side of the first gear ring (203); a first motor (204) is provided on the first gear (205); the first gear (205) is meshed with the first gear ring (203); and the first motor (204) is mounted on the pushing mechanism (3).

2. According to claim 1, the high-pressure jet grouting pile water-rich stratum rotary drilling device is characterized by: A transverse groove (102) is provided at the bottom of the drilling machine (101), and the pushing mechanism (3) comprises a transverse plate (301). A first arc-shaped sliding groove (302) is provided at the bottom of the transverse plate (301), and the ring rail (202) abuts against the first arc-shaped sliding groove (302).

3. According to claim 2, the high-pressure jet grouting pile water-rich stratum rotary drilling device is characterized by: A vertical rail (303) is provided on the horizontal plate (301), and the vertical rail (303) abuts against the horizontal groove (102). A cylinder (304) is provided on the horizontal plate (301), and one end of the cylinder (304) is connected to the drilling machine (101).

4. According to claim 1, the high-pressure jet grouting pile water-rich stratum rotary drilling device is characterized by: The rotating mechanism (4) comprises a rectangular column (401), the rectangular column (401) is mounted on the drilling machine (101), a ring column (402) is provided on the outer wall of the rectangular column (401), a second ring rail (403) is provided on the ring column (402), and a sliding seat (404) is provided on the second ring rail (403).

5. According to claim 4, the high-pressure jet grouting pile water-rich stratum rotary drilling device is characterized by: A second arc-shaped slide groove (4041) is provided on the sliding seat (404), the second ring rail (403) abuts against the second arc-shaped slide groove (4041), a second motor (405) is provided on the sliding seat (404), a second gear (406) is provided on the second motor (405), a second gear ring (408) is provided on the inner wall of the ring column (402), and the second gear ring (408) meshes with the second gear (406).

6. According to claim 4, the high-pressure jet grouting pile water-rich stratum rotary drilling device is characterized by: A rotating seat (407) is provided on one side of the sliding seat (404), and a plurality of supporting columns are provided between the rectangular column (401) and the ring column (402).

7. According to claim 1, the high-pressure jet grouting pile water-rich stratum rotary drilling device is characterized by: The connecting seat (5) comprises a second rotating seat (502), a rotating column (501) is provided at the bottom of the second rotating seat (502), the rotating column (501) is rotatably connected to the trolley (103), a second cylinder is provided at the bottom of the second rotating seat (502), a friction plate is provided at one end of the second cylinder, and the second rotating seat (502) is mounted on the trolley (103).

8. According to claim 7, the high-pressure jet grouting pile water-rich stratum rotary drilling device is characterized by: An oil cylinder (7) is provided between the connecting seat (5) and the rotating mechanism (4); one end of the oil cylinder (7) is rotatably connected to the second rotating seat (502), and the other end of the oil cylinder (7) is rotatably connected to the rotating mechanism (4).

9. The high-pressure jet grouting pile water-rich stratum rotary drilling device according to claim 1 is characterized by: A plurality of telescopic legs (6) are provided at the bottom of the track transfer mechanism (2), and a universal wheel (601) is provided at the bottom of the telescopic legs (6).

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