A self-cleaning high-pressure jet grouting pile forming diameter detection device

Abstract

The utility model relates to diameter detection device technical field, and disclose a kind of self-cleaning high-pressure jet grouting pile diameter detection device, including detection device, the detection device is connected with first steel pipe, the first steel pipe is slidably sleeved with second steel pipe, the locking of locking groove on connecting piece is removed by the dolly movable slider driving locking block far from first steel pipe, to release the locking and fixing between mounting disc and movable collar, at this time, the dirt on the surface of first steel pipe and second steel pipe can be cleaned by sliding movable collar along the surface of first steel pipe and second steel pipe, and since the setting of reset spring, when cleaning second steel pipe, movable block is moved to the direction of second steel pipe by the elastic potential energy of reset spring, so that the brush head can be abutted to the surface of second steel pipe, so as to guarantee cleaning ability, movable collar is moved to the direction of mounting disc after use, and mounting disc and movable collar are locked and fixed by locking block.

Description

Technical Field

[0001] This utility model relates to the technical field of diameter detection devices, specifically a self-cleaning high-pressure jet grouting pile diameter detection device. Background Technology

[0002] In foundation pit support and foundation engineering construction, conventional high-pressure jet grouting piles are frequently used. This process involves using a nozzle to inject a high-pressure jet stream to cut the soil and form a pile, thereby reinforcing the soil. The RJP and MJS methods are improvements on the conventional high-pressure jet grouting pile process. The RJP method, also known as Rodin Jet Pile (ultra-high pressure jet grouting), is characterized by its use of pre-cutting and relay cutting techniques. It also allows for forced grout removal within the borehole, reducing the impact on the surrounding environment. The main working principle of conventional high-pressure jet grouting piles is the construction process of using a high-pressure jet stream to cut the soil and form a cement-soil pile.

[0003] The patent with publication number CN213926400U discloses a jet grouting pile diameter detection device, which includes a hollow tube, a vibration sensor 5, and a signal processing device 4; the hollow tube is provided at the edge position of the preset pile radius, parallel to the designed pile body, and at least two guide rails 6 are provided on the inner wall of the hollow tube in a direction parallel to the axial direction.

[0004] While the above-mentioned technology can obtain the pile quality corresponding to the pile height, is simple to operate, and allows for the recycling of steel pipes and sensors, the surface of the steel pipes used to detect the diameter of jet grouting piles will be covered with a lot of dirt. If the dirt cannot be scraped off in time, it will obscure the scale readings, thus affecting the diameter judgment. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a self-cleaning high-pressure jet grouting pile diameter detection device, thus solving the aforementioned technical problems.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a self-cleaning high-pressure jet grouting pile diameter detection device, comprising a detection device, a first steel pipe connected to the detection device, a second steel pipe slidably sleeved on the first steel pipe, graduated strips arranged on both the first and second steel pipes, an mounting plate arranged on the first steel pipe, a movable collar slidably sleeved on the first steel pipe, four sliding cavities opened along the circumferential direction on the inner sidewall of the movable collar, movable blocks slidably arranged in the sliding cavities, several brush heads arranged on the ends of the four movable blocks that are close to each other, a return spring arranged in the sliding cavity, one end of the return spring installed on the inner wall of the sliding cavity, the other end of the return spring installed on the movable block, a return groove opened on the mounting plate, a movable slider slidably arranged in the return groove, a locking block protruding on the movable slider, a connecting piece protruding on the end of the movable collar near the mounting plate, a locking groove adapted to the locking block being opened on the connecting piece.

[0009] Preferably, each of the four movable blocks has two mutually symmetrical limiting grooves, and a limiting block is slidably arranged in the limiting groove, with the limiting block installed in the sliding cavity.

[0010] Preferably, a rectangular opening is provided on the top inner wall of the reset slide, and an adjustment block is connected to the top of the movable slider through the rectangular opening.

[0011] Preferably, a compression spring is arranged inside the reset slide groove, with one end of the compression spring installed on the inner wall of the reset slide groove and the other end of the compression spring installed on the movable slider.

[0012] Preferably, the movable collar is provided with a connecting pipe, and a plurality of nozzles are arranged at intervals along the circumferential direction on the inner sidewall of the movable collar, and the nozzles are connected to the connecting pipe.

[0013] Preferably, the brush head is made of silicone and is distributed in a matrix pattern along the surface of the movable block near the first steel pipe.

[0014] Preferably, there are two connectors, and the distance between the two connectors is the same as the diameter of the mounting plate.

[0015] Compared with the prior art, this utility model provides a self-cleaning high-pressure jet grouting pile diameter detection device, which has the following beneficial effects:

[0016] 1. This utility model utilizes the coordinated structure of a movable collar, movable block, and brush head. By moving the movable slider, the locking block is moved away from the locking groove on the connector, thus releasing the locking between the mounting plate and the movable collar. At this time, the movable collar can slide along the surfaces of the first and second steel pipes, allowing the brush head on the movable block to clean the dirt on the surfaces of the first and second steel pipes. Due to the setting of the return spring, when cleaning the second steel pipe, the elastic potential energy of the return spring pushes the movable block towards the second steel pipe, allowing the brush head to abut against the surface of the second steel pipe, thereby ensuring cleaning capability. After use, the movable collar is moved towards the mounting plate, and the mounting plate and movable collar are locked together by the locking block. Since all actions are completed manually by a single person on the ground, no additional power or underground work is required. Therefore, even in a confined work area, a cleaning-inspection cycle can be completed within 2 minutes, making it fully engineering-operable. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0018] Figure 2 This is a cross-sectional schematic diagram of the movable block, brush head, and return spring of this utility model.

[0019] Figure 3 This is a side cross-sectional view of the structure of the movable block, brush head, and movable slider of this utility model.

[0020] Figure 4 For the present utility model Figure 3 Enlarged schematic diagram of the structure at point A in the middle.

[0021] The components include: 1. Detection device; 2. Mounting plate; 3. Movable collar; 4. Connector; 5. Connecting pipe; 6. First steel pipe; 7. Second steel pipe; 8. Scale bar; 9. Movable block; 10. Sliding cavity; 11. Limiting groove; 12. Limiting block; 13. Nozzle; 14. Return spring; 15. Brush head; 16. Return slide groove; 17. Compression spring; 18. Rectangular opening; 19. Movable slider; 20. Locking block; 21. Locking groove; 22. Adjusting block. Detailed Implementation

[0022] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0023] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Please see Figure 1-4 A self-cleaning high-pressure jet grouting pile diameter detection device includes a detection device 1, a first steel pipe 6 connected to the detection device 1, a second steel pipe 7 slidably sleeved on the first steel pipe 6, graduation strips 8 arranged on both the first steel pipe 6 and the second steel pipe 7, an mounting plate 2 arranged on the first steel pipe 6, and a movable collar 3 slidably sleeved on the first steel pipe 6. Four sliding cavities 10 are formed along the circumferential direction on the inner sidewall of the movable collar 3, and movable blocks 9 are slidably arranged within the sliding cavities 10, with the four movable blocks 9 close to each other. A number of brush heads 15 are arranged on one end, and a return spring 14 is arranged in the sliding cavity 10. One end of the return spring 14 is installed on the inner wall of the sliding cavity 10, and the other end of the return spring 14 is installed on the movable block 9. A return slide groove 16 is provided on the mounting plate 2. A movable slider 19 is slidably arranged in the return slide groove 16. A locking block 20 is protruding on the movable slider 19. A connecting piece 4 is protruding on the end of the movable collar 3 near the mounting plate 2. A locking groove 21 that matches the locking block 20 is provided on the connecting piece 4.

[0026] Through the coordinated arrangement of the movable collar 3, movable block 9, and brush head 15, the locking block 20 can be moved away from the locking groove 21 on the connector 4 by moving the movable slider 19, thereby releasing the locking between the mounting plate 2 and the movable collar 3. At this time, the movable collar 3 can slide along the surfaces of the first steel pipe 6 and the second steel pipe 7, allowing the brush head 15 on the movable block 9 to clean the dirt on the surfaces of the first steel pipe 6 and the second steel pipe 7. Furthermore, due to the setting of the return spring 14, when cleaning the second steel pipe 7, the elastic force of the return spring 14 can be used to clean the dirt. The movable block 9 can be moved towards the second steel pipe 7, allowing the brush head 15 to contact the surface of the second steel pipe 7, thus ensuring cleaning capability. After use, the movable collar 3 is moved towards the mounting plate 2, and the mounting plate 2 and the movable collar 3 are locked and fixed by the locking block 20. This device is only used during the window period after the high-pressure jet grouting pile injection is completed but before the steel pipe is pulled out of the ground. At this time, the first steel pipe 6 and the second steel pipe 7 are still located in the pile hole, and the cement slurry stains attached to their outer walls will obscure the scale strip 8, making it impossible for ground personnel to directly read the corresponding scale of burial depth and diameter. This device, through the movable collar 3 that slides axially along the outer wall of the steel pipe, completes the stain removal in one go before pulling out the pipe and immediately reads the scale, thus avoiding the misjudgment of hole collapse and diameter reduction caused by "pulling out the pipe first and then testing".

[0027] Specifically, in this embodiment, each of the four movable blocks 9 has two mutually symmetrical limiting grooves 11, and a limiting block 12 is slidably arranged in the limiting groove 11. The limiting block 12 is installed in the sliding cavity 10.

[0028] By cooperating with the limiting groove 11 and the limiting block 12, the moving direction and range of the movable block 9 can be restricted, thus preventing the movable cover block from detaching from the sliding cavity 10.

[0029] Specifically, in this embodiment, a rectangular opening 18 is provided on the top inner wall of the reset slide 16, and an adjustment block 22 is connected to the top of the movable slider 19 through the rectangular opening 18.

[0030] With the rectangular opening 18 and the adjusting block 22 provided, the movable slider 19 can be moved by moving the adjusting block 22, and the movement range of the adjusting block 22 can be limited by the rectangular opening 18, thereby limiting the movement range of the movable slider 19.

[0031] Specifically, in this embodiment, a compression spring 17 is arranged inside the reset slide 16. One end of the compression spring 17 is installed on the inner wall of the reset slide 16, and the other end of the compression spring 17 is installed on the movable slider 19.

[0032] By setting the compression spring 17, it can be ensured that the movable slider 19 can always be pressed against the inner wall of the reset slide groove 16, thereby achieving the purpose of the locking block 20 always being pressed against the locking groove 21.

[0033] Specifically, in this embodiment, a connecting pipe 5 is provided on the movable collar 3, and a plurality of nozzles 13 are arranged at intervals along the circumferential direction on the inner sidewall of the movable collar 3, and the nozzles 13 are connected to the connecting pipe 5.

[0034] By setting up the nozzle 13 and the connecting pipe 5, when cleaning the first steel pipe 6 and the second steel pipe 7, the connecting pipe 5 can be connected to the water pipe, so that several nozzles 13 can spray clean water or cleaning liquid, thereby improving the cleaning efficiency of the first steel pipe 6 and the second steel pipe 7.

[0035] Specifically, in this embodiment, the brush head 15 is made of silicone and is distributed in a matrix pattern along the surface of the movable block 9 near the first steel pipe 6.

[0036] Specifically, in this embodiment, there are two connectors 4, and the distance between the two connectors 4 is the same as the diameter of the mounting plate 2.

[0037] The specific operating steps are as follows:

[0038] Step S1: After the jet grouting is completed, keep the first steel pipe 6 and the second steel pipe 7 in place and turn off the high-pressure pump;

[0039] Step S2: The ground operator holds the adjusting block 22 and presses down with his thumb to disengage the locking block 20 from the locking groove 21, at which point the compression spring 17 is compressed;

[0040] Step S3: Manually push the movable collar 3 downwards, with a pushing stroke of 0.5-1.0m (corresponding to the length of a single cleaning cycle) and a pushing speed of approximately 0.2m / s. During the pushing process, the return spring 14 continuously presses the movable block 9 and the silicone brush head 15 against the outer wall of the steel pipe. At the same time, the connecting pipe 5 is connected to the 0.3-0.5MPa clean water pipe on site through the quick connector. The nozzle 13 forms a ring-shaped water curtain, and the brushing and rinsing are completed simultaneously.

[0041] Step S4: After reaching the target depth, lift the movable collar 3 to the initial position, release the adjusting block 22, the compression spring 17 returns to its original position, the locking block 20 is locked into the locking groove 21 again, and the movable collar 3 is locked below the mounting plate 2.

[0042] Step S5: Ground personnel directly visually read the exposed scale bar 8 and record the pile diameter at that depth;

[0043] Step S6: Repeat S2-S5 until all detection depths are completed, then remove the tube normally.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for detecting the diameter of a self-cleaning high-pressure jet grouting pile, comprising a detection device, characterized in that: The detection device is connected to a first steel pipe, and a second steel pipe is slidably sleeved on the first steel pipe. Both the first and second steel pipes are equipped with scale strips. A mounting plate is mounted on the first steel pipe, and a movable collar is slidably sleeved on the first steel pipe. Four sliding cavities are formed along the circumferential direction on the inner sidewall of the movable collar. Movable blocks are slidably arranged in the sliding cavities. Several brush heads are arranged on the ends of the four movable blocks that are close to each other. A return spring is arranged in the sliding cavity. One end of the return spring is installed on the inner wall of the sliding cavity, and the other end of the return spring is installed on the movable block. A return groove is formed on the mounting plate, and a movable slider is slidably arranged in the return groove. A locking block is protruding on the movable slider. A connecting piece is protruding on the end of the movable collar that is close to the mounting plate. A locking groove that matches the locking block is formed on the connecting piece.

2. The self-cleaning high-pressure jet grouting pile diameter detection device according to claim 1, characterized in that: Each of the four movable blocks has two mutually symmetrical limiting grooves, and a limiting block is slidably arranged in the limiting groove and installed in the sliding cavity.

3. The self-cleaning high-pressure jet grouting pile diameter detection device according to claim 1, characterized in that: A rectangular opening is provided on the top inner wall of the reset slide, and an adjustment block is connected to the top of the movable slider through the rectangular opening.

4. The self-cleaning high-pressure jet grouting pile diameter detection device according to claim 1, characterized in that: A compression spring is arranged inside the reset slide groove. One end of the compression spring is installed on the inner wall of the reset slide groove, and the other end of the compression spring is installed on the movable slider.

5. The self-cleaning high-pressure jet grouting pile diameter detection device according to claim 1, characterized in that: The movable collar is equipped with a connecting pipe, and several nozzles are arranged at intervals along the circumference on the inner side wall of the movable collar. The nozzles are connected to the connecting pipe.

6. The self-cleaning high-pressure jet grouting pile diameter detection device according to claim 1, characterized in that: The brush head is made of silicone and is distributed in a matrix pattern along the surface of the movable block near the first steel pipe.

7. The self-cleaning high-pressure jet grouting pile diameter detection device according to claim 1, characterized in that: There are two connectors, and the distance between the two connectors is the same as the diameter of the mounting plate.

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