A reaming device for high pressure jetting rotary water cutting of soil

Abstract

The utility model provides a kind of high-pressure jet rotary water cutting soil's reaming device, bottom plate and the soil layer located below bottom plate, the bottom plate and the soil layer are all provided with opening part, the opening part radial outside of the soil layer is provided with reaming part, the reaming device includes: thin-walled drilling machine, the thin-walled drilling machine is replaceably connected with opening drill bit and reaming drill bit.This high-pressure jet rotary water cutting soil's reaming device, can realize the soil layer reaming below bottom plate under the premise that the size of bottom plate opening is not increased, only by controlling the lifting speed of rotating injection port can realize uniform reaming, utilize high-pressure jet water to carry out accurate cutting, reduce soil disturbance, while it can reduce the damage area of existing concrete bottom plate, avoid large-scale damage of reinforcement.

Description

Technical Field

[0001] This utility model relates to the field of geotechnical engineering technology, and in particular to a hole-enlarging device for high-pressure jet rotary water cutting of soil. Background Technology

[0002] In traditional foundation treatment, pile foundation construction, or underground engineering borehole enlargement operations, soil excavation is often carried out by methods such as mechanical drill bit cutting, impact drilling, or blasting. High-pressure water jet technology, due to its characteristics of no heat impact, low vibration, and precise cutting, has gradually been introduced into the field of soil excavation.

[0003] However, when forming large-diameter soil holes under a conventional base slab, a large area of ​​the base slab structure needs to be damaged. In addition, traditional hole-forming machinery is generally large in size and requires a large operating space. However, when constructing cultural relic protection buildings, the area of ​​the hole opening in the base slab is limited, so the structure cannot be damaged over a large area. Furthermore, the height of the machinery is limited. Although manual hole-forming can be operated in a smaller space, it is difficult to ensure the uniformity of the hole formation.

[0004] Therefore, in order to solve the above problems, this utility model proposes a high-pressure jet rotary water cutting device for soil enlarging, which has a small bottom plate opening area, can operate in a narrow space, and has a high degree of uniformity in enlarging the hole. Utility Model Content

[0005] To address the technical problems encountered when forming large-diameter soil holes under existing base plates, this utility model provides a hole-enlarging device for high-pressure jet rotary water cutting of soil.

[0006] According to one objective of this utility model, this utility model provides a hole-enlarging device for high-pressure jet rotary water cutting of soil, comprising a base plate and a soil layer located below the base plate, both the base plate and the soil layer having openings, and a hole-enlarging section located radially outward of the openings in the soil layer, the hole-enlarging device comprising:

[0007] A thin-walled drilling rig, on which a drilling bit and a reaming bit are interchangeably connected, the drilling bit being configured to form the opening portion in the base plate and the soil layer, the reaming bit being configured to pass through the opening portion in the base plate to the opening portion in the soil layer and form the reaming portion in the soil layer, the reaming bit being formed based on the drilling bit, the reaming bit having an injection port on its radially outer side, and the radial dimension of the reaming bit not being larger than that of the drilling bit;

[0008] A water supply component and a sewage discharge component are provided. The water supply component is connected to the jet nozzle. The input end of the sewage discharge component is located in the opening below the reaming drill bit. The output end of the sewage discharge component is located above the base plate. The thin-walled drilling rig, the water supply component, and the sewage discharge component are configured to operate synchronously.

[0009] A lifting mechanism is provided, on which the thin-walled drilling rig is mounted. The lifting mechanism has a lifting direction corresponding to the axial direction of the opening portion. The lifting mechanism is configured to drive the thin-walled drilling rig to move at a constant speed in the lifting direction.

[0010] Preferably, the lifting speed of the lifting mechanism is adjustable.

[0011] Preferably, the water pressure of the water supply component is adjustable.

[0012] Preferably, the water supply component is a pressure-adjustable booster pump, which is located at the upper end of the base plate. The thin-walled drilling rig is provided with a water inlet that connects to the jet nozzle. The water inlet is connected to the output end of the booster pump. The sewage discharge component is a sewage pump, which is installed on the thin-walled drilling rig.

[0013] Preferably, the hole-expanding device further includes a water purification component, and the water supply component, the sewage discharge component, and the water purification component are sequentially and circulated in connection.

[0014] Preferably, the water purification component is a three-stage sedimentation tank, which is located above the bottom plate. The output end of the sewage discharge component is connected to the three-stage sedimentation tank, and the purified water area on the three-stage sedimentation tank is connected to the input end of the water supply component.

[0015] Preferably, the radial dimension of the drilling bit and the radial dimension of the reaming bit are the same.

[0016] Preferably, the reaming drill bit has an injection port on each of its radially opposite sides.

[0017] Preferably, the injection port is recessed inward relative to the radial outer side of the reaming drill bit.

[0018] Preferably, the depth of the opening is greater than the depth of the enlarged opening.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] This high-pressure jet rotary water cutting soil enlargement device can enlarge the soil layer below the base plate without increasing the opening size of the base plate. Uniform enlargement can be achieved by simply controlling the lifting speed of the rotary jet nozzle. High-pressure jet water is used for precise cutting, reducing soil disturbance and minimizing the damage area to the existing concrete base plate, thus avoiding large-scale damage to the reinforcing steel.

[0021] The high-pressure jet rotary water cutting device for soil enlargement can directly replace the existing hole-opening drill bit on the thin-walled drilling machine with an enlargement drill bit, without the need to replace it with a larger-sized hole-opening device for hole enlargement operations, thus solving the problem of limited mechanical operation height in confined spaces.

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the working condition of the high-pressure jet rotary water cutting soil enlargement device described in this utility model;

[0024] Figure 2 This is a schematic diagram of the second working condition of the high-pressure jet rotary water cutting soil enlargement device described in this utility model;

[0025] Figure 3 This is a schematic diagram of the working condition three of the high-pressure jet rotary water cutting soil enlargement device described in this utility model;

[0026] Figure 4 This is a schematic diagram of the working condition four of the high-pressure jet rotary water cutting soil enlargement device described in this utility model;

[0027] Figure 5 This is a schematic diagram of working condition five of the high-pressure jet rotary water cutting soil enlargement device described in this utility model. Detailed Implementation

[0028] The following description is intended to provide a detailed account of the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0029] Please see Figure 4 This utility model provides a technical solution: a hole-enlarging device for high-pressure jet rotary water cutting of soil, comprising a base plate 100 and a soil layer 200 located below the base plate 100, both the base plate 100 and the soil layer 200 being provided with opening portions 300, and a hole-enlarging portion 400 being provided radially outward of the opening portion 300 of the soil layer 200, the hole-enlarging device comprising:

[0030] A thin-walled drilling rig 500 is replaceably connected with a hole-opening drill bit 501 and a hole-reaming drill bit 502. The hole-opening drill bit 501 is configured to form the hole portion 300 on the base plate 100 and the soil layer 200. The hole-reaming drill bit 502 is configured to pass through the hole portion 300 on the base plate 100 to the hole portion 300 on the soil layer 200 and form a hole-reaming portion 400 on the soil layer 200. The hole-reaming drill bit 502 can be formed based on the hole-opening drill bit 501. The radially outer side of the hole-reaming drill bit 502 has an injection port 5021. The radial dimension of the hole-reaming drill bit 502 is not greater than that of the hole-opening drill bit 501.

[0031] The water supply component 600 and the sewage discharge component 700 are connected to the jet port 5021. The input end of the sewage discharge component 700 is located in the opening portion 300 below the reaming drill bit 502, and the output end of the sewage discharge component 700 is located above the base plate 100. The thin-walled drilling rig 500, the water supply component 600 and the sewage discharge component 700 are configured to operate synchronously.

[0032] A lifting mechanism 800 is disposed on the upper end of the base plate 100. The thin-walled drilling rig 500 is mounted on the lifting mechanism 800. The lifting mechanism 800 is provided with a lifting direction corresponding to the axial direction of the opening portion 300. The lifting mechanism 800 is configured to drive the thin-walled drilling rig 500 to move at a constant speed in the lifting direction.

[0033] Furthermore, the lifting speed of the lifting mechanism 800 and the water pressure of the water supply component 600 are both adjustable, so that the device can be used under different working conditions. The ratio of the drill rod lifting speed to the water pressure can be adjusted according to the soil layer 200, making it suitable for various soil layers 200.

[0034] Specifically, the water supply component 600 is a pressure-adjustable booster pump, which is located on the upper end of the base plate 100. The thin-walled drilling rig 500 is provided with an inlet 5022 that connects to the jet port 5021. The inlet 5022 is connected to the output end of the booster pump. The sewage discharge component 700 is a sewage pump, which is installed on the thin-walled drilling rig 500. In use, the sewage pump can move with the thin-walled drilling rig 500 within the hole to reduce the length requirement of the pipeline on the sewage pump.

[0035] Furthermore, the hole-expanding device also includes a water purification component 900. The water supply component 600, the sewage discharge component 700, and the water purification component 900 are sequentially connected in a circulating manner. In use, the water supply component 600 injects pressurized water into the hole opening 300 through the spray nozzle 5021 to form the hole-expanding part 400. Mud is generated in the hole opening 300 and the hole-expanding part 400. The sewage discharge component 700 discharges the mud and transfers it to the water purification component 900. The water purification component 900 treats the mud to form clean water, which is then further supplied to the water supply component 600 for use, realizing the reuse of construction water.

[0036] Specifically, the water purification component 900 is a three-stage sedimentation tank, which is located above the bottom plate 100. The output end of the sewage discharge component 700 is connected to the three-stage sedimentation tank, and the purified water area on the three-stage sedimentation tank is connected to the input end of the water supply component 600.

[0037] In this embodiment, the opening drill bit 501 and the reaming drill bit 502 have the same specifications, that is, the radial dimensions of the opening drill bit 501 and the reaming drill bit 502 are the same. The reaming drill bit 502 has a spray nozzle 5021 on each of its opposite radially opposite sides, and the spray nozzle 5021 is recessed relative to the radial outer side of the reaming drill bit 502. During processing, the reaming drill bit 502 can be modified from the opening drill bit 501, which is simple to operate and has low cost. Specifically, two recessed spray nozzles 5021 are cut and machined from a regular opening drill bit 501. In addition, the pressurized water pump can be modified from a small pressurized car wash machine; the parts are inexpensive, easy to purchase, and easy to operate. After simple processing and assembly, the hole-reaming function can be achieved. The recessed spray nozzles 5021 can, to a certain extent, prevent the spray nozzles 5021 from being blocked, and the symmetrically arranged multiple spray nozzles can improve the efficiency and uniformity of hole reaming during the process.

[0038] Furthermore, the depth of the opening portion 300 is greater than the depth of the enlarged portion 400.

[0039] The use of this reaming device includes the following steps:

[0040] S1. Thin-walled drilling rig, 500mm base plate, 100mm opening.

[0041] See Figure 1 and 2 After determining the location, a thin-walled drilling rig 500 was used to drill a hole in the base plate 100. After core sampling of the base plate 100, the extension rod was used to continue drilling into the soil layer 200 below the base plate 100. The hole depth in the soil layer 200 exceeded the design requirement by 10cm.

[0042] S2. Combined connection

[0043] See Figure 3 and4 Remove the opening drill bit 501 from the thin-walled drilling rig 500 and replace it with the reaming drill bit 502. Adjust the jet nozzle 5021 to the specified height using the lifting mechanism 800 and then fix it. Then connect the pressurized water pump and the inlet 5022 to enable it to perform rotary water cutting of the soil. Finally, place the sewage pump in the hole through the thin-walled drilling rig 500 and fix the sewage pump's drain pipe in the three-stage sedimentation tank. At this point, the preparatory work before reaming is completed.

[0044] S3. Uniform orifice enlargement is achieved by controlling the lifting speed of the rotating injection nozzle 5021.

[0045] See also Figure 4 Adjust the pressure value of the booster water pump to meet the calculation requirements. After the adjustment is completed, turn on the booster water pump, the reaming drill bit 502 and the sewage pump at the same time. The jet nozzle 5021 continuously sprays high-pressure water and the reaming drill bit 502 slowly advances downward until the lower surface of the jet nozzle 5021 reaches the specified depth of the hole. During this period, ensure that the sewage pump operates normally and place a backup pump on site to discharge the mud to the three-stage sedimentation tank. Then, inject the settled water from the inlet 5022 to realize the reuse of construction water.

[0046] S4. Inspect the hole enlargement results, repeat the process until the target is met.

[0047] Using an L-shaped steel ruler, lower it to a specified height 100mm below the base plate, and rotate it close to the soil wall of the hole below the base plate 100mm below to determine if there is any obstruction. If there is obstruction, this height needs to be repeated in step S3 to enlarge and adjust the hole. If there is no soil resistance, it means that the hole enlargement meets the design requirements.

[0048] After the hole is enlarged, see Figure 5 Remove any remaining water from the hole promptly to prevent it from collapsing due to prolonged immersion.

[0049] In summary, this hole-enlarging device can enlarge the soil layer 200 below the base plate 100 by using high-pressure jet rotating water to cut the soil without increasing the opening size of the base plate 100. Uniform hole enlargement can be achieved simply by controlling the lifting speed of the rotating jet nozzle 5021. Precise cutting is achieved by using high-pressure jet water, reducing disturbance to the soil layer 200, and at the same time reducing the area of ​​damage to the existing concrete base plate 100, thus avoiding large-scale damage to the reinforcing steel.

[0050] This hole-reaming device can directly replace the hole-opening drill bit 501 on the original thin-walled drilling machine 500 with the hole-reaming drill bit 502, without the need to replace it with a larger hole-opening device for hole-reaming operations, thus solving the problem of limited mechanical operation height in confined spaces.

[0051] The embodiments described above are only used to illustrate the technical ideas and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. The scope of patent application of this utility model should not be limited by these embodiments. That is, any equivalent changes or modifications made in accordance with the spirit disclosed in this utility model still fall within the patent scope of this utility model.

Claims

1. A hole-enlarging device for high-pressure jet rotary water cutting of soil, comprising a base plate (100) and a soil layer (200) located below the base plate (100), wherein both the base plate (100) and the soil layer (200) are provided with openings (300), and a hole-enlarging part (400) is provided radially outward of the openings (300) in the soil layer (200), characterized in that, The hole-reaming device includes: A thin-walled drilling rig (500) is replaceably connected to an opening drill bit (501) and a reaming drill bit (502). The opening drill bit (501) is configured to form the opening portion (300) on the base plate (100) and the soil layer (200). The reaming drill bit (502) is configured to pass through the opening portion (300) on the base plate (100) to the opening portion (300) on the soil layer (200) and form an enlarged portion (400) on the soil layer (200). The reaming drill bit (502) can be formed based on the opening drill bit (501). The reaming drill bit (502) has a jet port (5021) on its radially outer side. The radial dimension of the reaming drill bit (502) is not greater than that of the opening drill bit (501). A water supply component (600) and a sewage discharge component (700) are provided. The water supply component (600) is connected to the jet nozzle (5021). The input end of the sewage discharge component (700) is located in the opening portion (300) below the reaming drill bit (502). The output end of the sewage discharge component (700) is located above the base plate (100). The thin-walled drilling rig (500), the water supply component (600), and the sewage discharge component (700) are configured to operate synchronously. A lifting mechanism (800) is provided on which the thin-walled drilling rig (500) is mounted. The lifting mechanism (800) has a lifting direction corresponding to the axial direction of the opening portion (300). The lifting mechanism (800) is configured to drive the thin-walled drilling rig (500) to move at a constant speed in the lifting direction.

2. The hole-enlarging device for high-pressure jet rotary water cutting of soil according to claim 1, characterized in that, The lifting speed of the lifting mechanism (800) is adjustable.

3. The hole-enlarging device for high-pressure jet rotary water cutting of soil according to claim 1, characterized in that, The water pressure of the water supply unit (600) is adjustable.

4. A hole-enlarging device for high-pressure jet rotary water cutting of soil according to claim 3, characterized in that, The water supply component (600) is a pressure-adjustable booster pump. The water supply component (600) is located on the upper end of the base plate (100). The thin-walled drilling rig (500) is provided with an inlet (5022) that connects to the jet nozzle (5021). The inlet (5022) is connected to the output end of the booster pump. The sewage discharge component (700) is a sewage pump, which is installed on the thin-walled drilling rig (500).

5. A hole-enlarging device for high-pressure jet rotary water cutting of soil according to claim 1, characterized in that, The hole-expanding device also includes a water purification component (900), and the water supply component (600), the sewage discharge component (700) and the water purification component (900) are sequentially and circulated in connection.

6. A hole-enlarging device for high-pressure jet rotary water cutting of soil according to claim 5, characterized in that, The water purification component (900) is a three-stage sedimentation tank, which is located above the bottom plate (100). The output end of the sewage discharge component (700) is connected to the three-stage sedimentation tank, and the purified water area on the three-stage sedimentation tank is connected to the input end of the water supply component (600).

7. A hole-enlarging device for high-pressure jet rotary water cutting of soil according to claim 1, characterized in that, The radial dimension of the drilling bit (501) is the same as that of the reaming bit (502).

8. A hole-enlarging device for high-pressure jet rotary water cutting of soil according to claim 1, characterized in that, The reaming drill bit (502) has an injection port (5021) on each of its radially opposite sides.

9. A hole-enlarging device for high-pressure jet rotary water cutting of soil according to claim 1, characterized in that, The injection port (5021) is recessed on the radially outer side of the reaming drill bit (502).

10. A hole-enlarging device for high-pressure jet rotary water cutting of soil according to claim 1, characterized in that, The depth of the opening (300) is greater than the depth of the enlarged opening (400).

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