Slurry specific gravity monitoring device for quality control of super-long cast-in-situ bored pile

Abstract

The utility model discloses an overlong cast-in-situ bored pile quality control mud specific gravity monitoring device which comprises a base, a machine frame is fixedly installed on the top of the base, a control host and an audible and visual alarm are fixedly installed on the outer wall of the machine frame, and a supporting arm is connected to the machine frame through a height adjusting mechanism. A servo motor used for driving the height adjusting mechanism is installed on the top of the machine frame, and a liquid level sensor is installed on the supporting arm in a penetrating mode. According to the utility model, the control host monitors the distance between the mud liquid level and the support arm through the liquid level sensor before mud specific gravity measurement every time, and controls the servo motor to drive the height adjusting mechanism to operate, so that the support arm and the mud liquid level keep a preset distance size; then the distance between the top face of the limiting block and the laser ranging probe is measured through the laser ranging probe, the accuracy of mud specific gravity detection can be ensured, when the measured mud specific gravity data exceed a set value, the control host can start the audible and visual alarm to give an alarm, and the use effect is good.

Description

Technical Field

[0001] This utility model relates to the field of mud ratio monitoring technology, specifically a mud ratio monitoring device for quality control of ultra-long bored piles. Background Technology

[0002] Mud specific gravity refers to the ratio of solid particles to liquid in the drilling mud. During the construction of ultra-long bored piles, it is crucial to continuously monitor the mud specific gravity, as changes directly impact drilling quality and efficiency. If the mud specific gravity is too low, the drill bit cannot stably penetrate the formation, affecting drilling speed and borehole stability. Conversely, if the mud specific gravity is too high, drill bit wear will increase, leading to higher energy consumption and further affecting drilling speed and construction quality. Furthermore, changes in mud specific gravity can reflect the geological conditions. A sudden increase in mud specific gravity indicates the encounter of a formation with a high specific gravity, requiring timely adjustments to the drilling process to ensure smooth construction. Therefore, continuously monitoring the mud specific gravity during bored pile construction helps engineers identify problems promptly, make timely adjustments, and ensure successful construction.

[0003] A search revealed that patent CN221377584U discloses a mud specific gravity monitoring and adjustment device for pile foundation engineering. This device uses a height adjustment mechanism where a horizontal plate moves up and down within a channel, thereby changing the initial height of the float. This allows the device to adjust its height to adapt to mud pools of different heights and enhances stability after height adjustment. The design of the guide hole and guide rod ensures that the connecting rod drives the float to move vertically, preventing deviation and guaranteeing the accuracy of the monitoring values ​​and the adjustment of the mud specific gravity.

[0004] While the above-mentioned solution allows for adjusting the initial height of the float via a height adjustment mechanism to measure the specific gravity of the mud using the combination of the float, slide plate, and scale plate, the mud in the mud pit is constantly being poured into the pile hole and then flowing back out. Therefore, the liquid level in the mud pit is constantly changing. Since the initial height of the float and scale plate cannot be adjusted according to the mud level, the accuracy of mud specific gravity monitoring is difficult to guarantee and requires improvement. Utility Model Content

[0005] The purpose of this invention is to provide a mud specific gravity monitoring device for quality control of ultra-long bored cast-in-place piles, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A mud specific gravity monitoring device for quality control of ultra-long bored piles includes a base, a frame fixedly mounted on the top of the base, a control host and an audible and visual alarm fixedly mounted on the outer wall of the frame, a support arm connected to the frame via a height adjustment mechanism, a servo motor for driving the height adjustment mechanism mounted on the top of the frame, a liquid level sensor mounted on the support arm, a sliding rod slidably mounted on the top of the support arm, a float fixedly connected to the bottom end of the sliding rod, a limit block detachably connected to the top end of the sliding rod, and a laser ranging probe mounted on the top of the support arm via a bracket, the laser ranging probe being located directly above the limit block.

[0008] As a further embodiment of this utility model: the height adjustment mechanism includes a lead screw rotatably mounted in the frame, a slider slidably connected in the frame, the slider being fitted onto the lead screw through a threaded hole, the slider being fixedly connected to the support arm, and the output shaft of the servo motor being fixedly connected to the top end of the lead screw.

[0009] As a further embodiment of this utility model: a guide rod is slidably inserted through a through hole at the top of the slider, and the guide rod is fixedly connected to the inner wall of the frame.

[0010] As a further embodiment of this utility model: the top end of the slide rod is provided with an external thread, and the bottom of the limiting block is fitted onto the top end of the slide rod through a threaded hole.

[0011] As a further embodiment of this utility model: a linear bearing is fixedly inserted through the top of the support arm, and the slide rod is slidably inserted through the linear bearing.

[0012] As a further embodiment of this utility model: a stainless steel cylinder is detachably installed at the bottom of the support arm and at the corresponding position of the liquid level sensor and the linear bearing. Several through holes are provided through the outer wall of the stainless steel cylinder, and the float is located inside the corresponding stainless steel cylinder.

[0013] As a further improvement of this utility model: the bottom of the support arm and the corresponding positions of the liquid level sensor and linear bearing are all fixedly installed with external threaded pipes, and the top opening of the stainless steel cylinder is sleeved on the corresponding external threaded pipe through internal thread.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] In this invention, before each mud specific gravity measurement, the control host monitors the distance between the mud surface and the support arm through a liquid level sensor, and controls the servo motor to drive the height adjustment mechanism to maintain a preset distance between the support arm and the mud surface. Then, the distance between the top surface of the limit block and the laser ranging probe is measured through a laser ranging probe, which ensures the accuracy of mud specific gravity detection. When the measured mud specific gravity data exceeds the set value, the control host can activate an audible and visual alarm to provide a warning, resulting in good performance. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a mud specific gravity monitoring device for quality control of ultra-long bored piles.

[0017] Figure 2 for Figure 1 A sectional view.

[0018] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0019] Figure 4 This is a structural block diagram of a mud specific gravity monitoring device for quality control of ultra-long bored piles.

[0020] The components include: base 1, frame 2, lead screw 3, servo motor 4, slider 5, guide rod 6, support arm 7, liquid level sensor 8, linear bearing 9, slide rod 10, float 11, limit block 12, bracket 13, laser rangefinder 14, external threaded pipe 15, stainless steel cylinder 16, through hole 17, control host 18, and audible and visual alarm 19. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-4In this embodiment of the present invention, a mud specific gravity monitoring device for quality control of ultra-long bored piles includes a base 1, a frame 2 fixedly installed on the top of the base 1, a control host 18 and an audible and visual alarm 19 fixedly installed on the outer wall of the frame 2, a support arm 7 connected to the frame 2 via a height adjustment mechanism, a servo motor 4 for driving the height adjustment mechanism installed on the top of the frame 2, a liquid level sensor 8 mounted on the support arm 7, a sliding rod 10 slidably mounted on the top of the support arm 7, a float 11 fixedly connected to the bottom end of the sliding rod 10, a limit block 12 detachably connected to the top end of the sliding rod 10, a laser ranging probe 14 mounted on the top of the support arm 7 via a bracket 13, the laser ranging probe 14 being located directly above the limit block 12, and the laser ranging probe 14, the servo motor 4, the liquid level sensor 8 and the audible and visual alarm 19 being electrically connected to the control host 18 via wires.

[0023] By adopting the above-described solution, this utility model, in use, places the device on one side of the mud tank, starts the servo motor 4, which drives the support arm 7 to move downwards, and monitors the distance between the support arm 7 and the liquid surface in the mud tank through the liquid level sensor 8. When the distance between the support arm 7 and the liquid surface is adjusted to a preset size, and the float 11 is in stable contact with the mud, the distance between the top of the limiting block 12 and the laser ranging probe 14 is measured through the laser ranging probe 14. The specific gravity of the mud can then be calculated from this distance, and the main control unit 18 is controlled. Before each mud specific gravity measurement, the distance between the mud surface and the support arm 7 is monitored by the liquid level sensor 8, and the servo motor 4 is controlled to drive the height adjustment mechanism to maintain the preset distance between the support arm 7 and the mud surface. Then, the distance between the top surface of the limit block 12 and the laser distance probe 14 is measured by the laser distance probe 14, which ensures the accuracy of mud specific gravity detection. When the measured mud specific gravity data exceeds the set value, the control host 18 can activate the audible and visual alarm 19 to provide a warning, which has a good effect.

[0024] Specific combination Figure 1 and Figure 2 In one embodiment of this utility model, the height adjustment mechanism includes a lead screw 3 rotatably mounted in the frame 2, a slider 5 slidably connected in the frame 2, the slider 5 being fitted onto the lead screw 3 through a threaded hole, the slider 5 being fixedly connected to the support arm 7, and the output shaft of the servo motor 4 being fixedly connected to the top end of the lead screw 3.

[0025] By starting the servo motor 4 to drive the lead screw 3 to rotate, the lead screw 3 can be used to drive the slider 5 to move up and down within the frame 2 through the cooperation between the threaded hole on the slider 5 and the slider 5, so as to adjust the height of the support arm 7.

[0026] Specific combination Figure 2In one embodiment of this utility model, a guide rod 6 is slidably inserted through a through hole at the top of the slider 5. The guide rod 6 is fixedly connected to the inner wall of the frame 2. Through the cooperation between the guide rod 6 and the through hole, the slider 5 can be guided to move up and down within the frame 2, thereby improving the stability of the slider 5.

[0027] Specific combination Figure 3 In one embodiment of this utility model, a linear bearing 9 is fixedly inserted through the top of the support arm 7, and the slide rod 10 is slidably inserted through the linear bearing 9 to improve the smoothness of the slide rod 10 sliding up and down. The top of the slide rod 10 is provided with an external thread, and the bottom of the limiting block 12 is fitted onto the top of the slide rod 10 through a threaded hole, thereby facilitating the disassembly and assembly of the limiting block 12 at the top of the slide rod 10, and then facilitating the complete extraction of the slide rod 10 from the linear bearing 9, and cleaning the slide rod 10 and the float 11.

[0028] Specific combination Figure 1-3 In one embodiment of this utility model, a stainless steel cylinder 16 is detachably installed at the bottom of the support arm 7 and at the corresponding positions of the liquid level sensor 8 and the linear bearing 9. A plurality of through holes 17 are provided through the outer wall of the stainless steel cylinder 16, and the float 11 is located inside the corresponding stainless steel cylinder 16.

[0029] By setting a stainless steel cylinder 16 with through holes on its surface, when the liquid level in the mud tank becomes unstable due to the feeding and discharging of mud, the mud level in the stainless steel cylinder 16 can still remain relatively stable, thereby avoiding large fluctuations in the data detected by the liquid level sensor 8 and the laser ranging probe 14, and improving the accuracy of mud specific gravity detection.

[0030] Specific combination Figure 3 Based on the previous embodiment, further, specifically, the bottom of the support arm 7 and the corresponding positions of the liquid level sensor 8 and the linear bearing 9 are all fixedly installed with external threaded pipes 15, and the top opening of the stainless steel cylinder 16 is sleeved on the corresponding external threaded pipe 15 through internal threads.

[0031] The stainless steel cylinder 16 and the external threaded pipe 15 make it easy to disassemble and assemble the stainless steel cylinder 16 at the bottom of the support arm 7, thus facilitating the cleaning of the stainless steel cylinder 16.

[0032] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A mud specific gravity monitoring device for quality control of ultra-long bored cast-in-place piles, characterized in that: The device includes a base (1), a frame (2) is fixedly installed on the top of the base (1), a control host (18) and an audible and visual alarm (19) are fixedly installed on the outer wall of the frame (2), a support arm (7) is connected to the frame (2) through a height adjustment mechanism, a servo motor (4) for driving the height adjustment mechanism is installed on the top of the frame (2), a liquid level sensor (8) is installed on the support arm (7), a slide rod (10) is slidably installed on the top of the support arm (7), a float (11) is fixedly connected to the bottom end of the slide rod (10), a limit block (12) is detachably connected to the top of the slide rod (10), and a laser ranging probe (14) is installed on the top of the support arm (7) through a bracket (13), the laser ranging probe (14) is located directly above the limit block (12).

2. The mud specific gravity monitoring device for quality control of ultra-long bored piles according to claim 1, characterized in that: The height adjustment mechanism includes a lead screw (3) that is rotatably installed in the frame (2), a slider (5) that is slidably connected in the frame (2), the slider (5) being fitted onto the lead screw (3) through a threaded hole, the slider (5) being fixedly connected to the support arm (7), and the output shaft of the servo motor (4) being fixedly connected to the top end of the lead screw (3).

3. The mud specific gravity monitoring device for quality control of ultra-long bored piles according to claim 2, characterized in that: The top of the slider (5) is slidably fitted with a guide rod (6) through a through hole, and the guide rod (6) is fixedly connected to the inner wall of the frame (2).

4. The mud specific gravity monitoring device for quality control of ultra-long bored piles according to claim 1, characterized in that: The top end of the slide rod (10) is provided with an external thread, and the bottom of the limiting block (12) is fitted onto the top end of the slide rod (10) through a threaded hole.

5. The mud specific gravity monitoring device for quality control of ultra-long bored cast-in-place piles according to claim 1, characterized in that: A linear bearing (9) is fixedly inserted at the top of the support arm (7), and the slide rod (10) is slidably inserted inside the linear bearing (9).

6. The mud specific gravity monitoring device for quality control of ultra-long bored piles according to claim 1, characterized in that: Stainless steel cylinders (16) are detachably installed at the bottom of the support arm (7) and at the corresponding positions of the liquid level sensor (8) and the linear bearing (9). Several through holes (17) are provided through the outer wall of the stainless steel cylinder (16), and the float (11) is located inside the corresponding stainless steel cylinder (16).

7. The mud specific gravity monitoring device for quality control of ultra-long bored cast-in-place piles according to claim 6, characterized in that: The bottom of the support arm (7) is fixedly installed with an external threaded pipe (15) at the corresponding position of the liquid level sensor (8) and the linear bearing (9). The top opening of the stainless steel cylinder (16) is sleeved on the corresponding external threaded pipe (15) through an internal thread.

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