Sediment thickness detection equipment

Abstract

The invention discloses sediment thickness detection equipment, and relates to the technical field of engineering detection equipment, and the sediment thickness detection equipment comprises a winch, a sling coiled in the winch, a feeler lever installed at one end of the sling and a probe accommodated in the feeler lever, and a double-end electric push rod is installed in the feeler lever. The probe is fixedly connected with the lower end of the double-end electric push rod, and a positioning mechanism is arranged on the side face of the sling. A first-class correction mechanism is arranged on the outer side of the probe rod; an auxiliary correction mechanism is arranged at the bottom of the probe rod; the probe rod is preliminarily positioned through the positioning mechanism, and then the detection point position of the probe is finely positioned through the first-class correction mechanism and the auxiliary correction mechanism. The sediment thickness detection equipment disclosed by the invention has the effects of ensuring high accuracy of test data and multiple functions by multiple supporting and positioning.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering detection equipment, and particularly to a sediment thickness detection device. Background Art

[0002] Sediment thickness detection refers to the measurement process of the thickness of mud, debris or loose sediments deposited at the bottom of engineering foundations (such as pile foundations, caissons, diaphragm walls, etc.); this detection is mainly used to evaluate the construction quality of the foundation, ensure that the pile tip or base bearing capacity meets the design requirements, and avoid structural settlement or insufficient bearing capacity caused by too thick sediment.

[0003] During the construction of bored cast-in-place piles, the sediment phenomenon is an inevitable problem. The existence of sediment will greatly affect the bearing capacity and stability of the cast-in-place piles. In the "Technical Code for Building Pile Foundations" (JGJ94 - 2008), it is stipulated that for end-bearing piles, the sediment thickness at the bottom of the hole should not be greater than 50 mm; for friction piles, it should not be greater than 100 mm; for uplift and horizontal force-resistant piles, it should not be greater than 200 mm.

[0004] Currently, the traditional methods for measuring sediment thickness are affected by human factors and environmental factors, and it is difficult to guarantee the accuracy of the data. Most of the existing sediment thickness detection devices adopt a winch with a probe rod and probe structure, and use the probe rod to contact the sediment layer and the probe to insert into the sediment layer for detection. However, in actual operation, on the one hand, workers need to calibrate and position the points to be detected in advance, and the traditional positioning methods are rather cumbersome and inconvenient; on the other hand, when the probe rod contacts the sediment layer, as the probe extends, the force-bearing point of the probe is likely to change, resulting in the probe being easily tilted when inserted into the sediment layer, thus affecting the accuracy of the measurement data. Summary of the Invention

[0005] The present invention discloses a sediment thickness detection device, aiming to solve the technical problems that the existing sediment thickness detection devices are cumbersome and inconvenient to operate and their accuracy needs to be improved.

[0006] To achieve the above object, the present invention adopts the following technical solutions: A sediment thickness detection device includes a winch, a sling wound inside the winch, a probe rod installed at one end of the sling, and a probe received inside the probe rod. A double-headed electric push rod is installed inside the probe rod, the probe is fixedly connected to the output shaft at the lower end of the double-headed electric push rod, and a positioning mechanism is arranged on the side of the sling; A first type of correction mechanism is provided on the outer side of the probe rod. The first type of correction mechanism includes several sets evenly installed on the outer side of the top of the probe rod. A rack is slidably installed inside each set. The end of the rack penetrates into the probe rod and is fixedly connected to the output shaft at the upper end of the double-headed electric push rod. A gear is rotatably installed inside each set, and the gear is meshed with the rack; An auxiliary correction mechanism is provided at the bottom of the probe rod. The auxiliary correction mechanism includes several chambers evenly fixed on the outer side of the bottom of the probe rod. An expansion rod is provided on the side of the chamber, and both the expansion rod and the inside of the chamber are filled with hydraulic oil; The positioning mechanism is used to perform a preliminary positioning on the probe rod, and then the first type of correction mechanism and the auxiliary correction mechanism are used to perform a detailed positioning on the detection point of the probe.

[0007] By providing a positioning mechanism to assist the operator in performing a preliminary positioning on the downward probing point of the probe rod, the convenience of engineering operations is greatly improved. At the same time, a first type of correction mechanism and an auxiliary correction mechanism are additionally provided at the bottom of the probe rod. When the downward moving probe rod contacts the sediment layer, the first type of correction mechanism and the auxiliary correction mechanism on both sides of the probe rod will respectively provide lateral and longitudinal positioning supports, thereby preventing the probe from tilting when inserted into the sediment layer, and improving the detection accuracy of the device.

[0008] In a preferred solution, the positioning mechanism includes pile members symmetrically fixed on the ground. A V-shaped column is slidably sleeved on the outer sides of the two pile members. Two pulleys are symmetrically installed in the middle of the V-shaped column. The sling passes between the two pulleys. A number of positioning grooves are evenly formed on the outer side of the V-shaped column, and bolts are used to pass through the positioning grooves and squeeze and fix the pile members.

[0009] By providing a V-shaped column structure erected on the top of the pile member, the pile members are fixed on both sides of the point to be detected. The special V-shaped structure of the V-shaped column slides along the top of the pile member by itself, so as to achieve self-centering positioning. At the same time, the positioning groove is used to lock the V-shaped column after positioning, greatly improving the convenience of the traditional pre-detection positioning step.

[0010] In a preferred solution, the first type of correction mechanism further includes a sleeve rod fixedly installed on the outside of the gear, and a straight rod is slidably installed at the end of the sleeve rod.

[0011] By providing a sleeve rod structure driven by a gear and a rack on the outer side of the probe rod, the output shaft at the upper end of the double-headed electric push rod is used to drive all the racks to move together, thereby pushing the meshing gears to drive the sleeve rod and the straight rod to fold and squeeze against the inner wall of the shaft, performing a vertical positioning on the probe rod, so as to ensure the perpendicularity when the probe is inserted into the sediment layer and improve the detection accuracy of the device.

[0012] In a preferred embodiment, the auxiliary correction mechanism further includes a pressing plate fixedly installed at the end of the telescopic rod. A piston rod is slidably installed inside the chamber, and a connecting rod is rotatably installed between the piston rod and the sleeve rod.

[0013] By additionally providing a chamber structure at the bottom of the probe rod, the flipped sleeve rod drives the piston rod to move vertically along the inside of the chamber, causing the telescopic rod to extend and drive the pressing plate to move outward, pressing against the top of the sediment layer to form a positioning support for the probe, further improving the accuracy of the detection data of this device.

[0014] In a preferred embodiment, the pile member includes two connecting wheels symmetrically installed on both sides of the base. Both connecting wheels are slidably connected inside the V-shaped column. A number of longitudinal grooves are evenly formed along the longitudinal direction on the outside of the pile member. The base is fixed to the ground by inserting rivets into the inside of the longitudinal grooves. A number of transverse grooves are evenly formed along the transverse direction on the outside of the pile member. The base is fixed to the backing plate by inserting bolts into the inside of the transverse grooves.

[0015] By respectively providing longitudinal grooves and transverse groove structures at the top and side of the pile member, the longitudinal grooves and transverse groove structures can be used to fix this device to the ground and the backing plate respectively, so as to adapt to different application environments and improve the functionality of this device.

[0016] As can be seen from the above, a sediment thickness detection device provided by the present invention has the following technical effects.

[0017] Firstly: By providing a V-shaped column structure erected on the top of the pile member, using the special V-shaped structure and gravity of the V-shaped column, the V-shaped column slides automatically along the top of the pile member, thereby realizing central positioning independently. At the same time, cooperating with the positioning groove to lock the positioned V-shaped column, the convenience of the traditional pre-detection positioning step is greatly improved. Moreover, longitudinal grooves and transverse groove structures are respectively provided at the top and side of the pile member, and the longitudinal grooves and transverse groove structures can be used to fix this device to the ground and the backing plate respectively, so as to adapt to different application environments and improve the functionality of this device.

[0018] Secondly: By providing a sleeve rod structure driven by a gear and rack on the outside of the probe rod, the output shaft at the upper end of the double-headed electric push rod drives all the racks to move together, thereby pushing the meshing gears to drive the sleeve rod and the straight rod to fold and press against the inner wall of the shaft, providing lateral support and vertical positioning for the probe rod, so as to ensure the perpendicularity when the probe is inserted into the sediment layer and improve the detection accuracy of this device.

[0019] Thirdly, by additionally providing a chamber structure at the bottom of the probe rod, the flipping sleeve rod is used to drive the piston rod to move vertically along the inside of the chamber, so that the telescopic rod extends and drives the pressing plate to move outwards, squeezing the top of the sediment layer to provide longitudinal support and vertical positioning for the probe, thereby further improving the accuracy of the detection data of this device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure proposed by the present invention.

[0021] Figure 2 It is a schematic diagram of the structure of the positioning mechanism proposed by the present invention.

[0022] Figure 3 It is a schematic diagram of the pile member structure proposed by the present invention.

[0023] Figure 4 It is a schematic diagram of the outer side structure of the sleeve rod proposed by the present invention.

[0024] Figure 5 It is a sectional view of the sleeve rod structure proposed by the present invention.

[0025] Figure 6 It is a schematic diagram of the connection state of the double-headed electric push rod proposed by the present invention.

[0026] Figure 7 It is a schematic diagram of the internal structure of the kit proposed by the present invention.

[0027] Figure 8 It is an exploded view of the structure around the sleeve rod proposed by the present invention.

[0028] Figure 9 It is a sectional view of the structure of the auxiliary correction mechanism proposed by the present invention.

[0029] Figure 10 It is a schematic diagram of the position B of the pile member installation proposed by the present invention.

[0030] Figure 11 proposed by the present invention Figure 2 Enlarged schematic diagram at A in

[0031] Figure 12 It is a state diagram when a type of correction mechanism proposed by the present invention is operating.

[0032] Figure 13 It is a state diagram of a type of correction mechanism proposed by the present invention under normal conditions.

[0033] In the figure: 1, winch; 2, sling; 3, sounding rod; 4, probe; 401, double-headed electric push rod; 5, positioning mechanism; 501, pile member; 5011, connecting wheel; 5012, base; 5013, longitudinal groove; 5014, transverse groove; 502, V-shaped column; 503, pulley; 504, positioning groove; 6, first type of correction mechanism; 601, kit; 602, rack; 603, gear; 604, sleeve rod; 605, straight rod; 606, auxiliary wheel; 607, spring; 7, auxiliary correction mechanism; 701, chamber; 702, telescopic rod; 703, pressing plate; 704, piston rod; 705, connecting rod; 706, connecting piece. Detailed implementation manners

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0035] A sediment thickness detection device disclosed by the present invention is mainly applied to the scenario of detecting the thickness of the sediment layer in engineering projects.

[0036] Refer to Figures 1 to 13 , a sediment thickness detection device, including a winch 1, a sling 2 wound inside the winch 1, a sounding rod 3 installed at one end of the sling 2, and a probe 4 accommodated inside the sounding rod 3. A double-headed electric push rod 401 is installed inside the sounding rod 3, and the probe 4 is fixedly connected to the output shaft at the lower end of the double-headed electric push rod 401. A positioning mechanism 5 is arranged on the side of the sling 2; A first type of correction mechanism 6 is arranged on the outer side of the sounding rod 3. The first type of correction mechanism 6 includes a plurality of kits 601 evenly installed on the outer side of the top of the sounding rod 3. A rack 602 is slidably installed inside each kit 601. The end of the rack 602 penetrates into the sounding rod 3 and is fixedly connected to the output shaft at the upper end of the double-headed electric push rod 401. A gear 603 is rotatably installed inside each kit 601, and the gear 603 is meshed with the rack 602; An auxiliary correction mechanism 7 is arranged at the bottom of the sounding rod 3. The auxiliary correction mechanism 7 includes a plurality of chambers 701 evenly fixed on the outer side of the bottom of the sounding rod 3. A telescopic rod 702 is arranged on the side of the chamber 701, and hydraulic oil is filled in both the telescopic rod 702 and the chamber 701; The sounding rod 3 is initially positioned by the positioning mechanism 5, and then the detection points of the probe 4 are finely positioned by the first type of correction mechanism 6 and the auxiliary correction mechanism 7.

[0037] In this embodiment: The worker moves the entire device to the location to be detected, places the winch 1 on the ground, and at the same time sets up the positioning mechanism 5 on top of the location to be detected. The positioning mechanism 5 operates to autonomously locate the central point to be detected. Then the worker passes the sling 2 through the middle of the positioning mechanism 5 and hangs the probe rod 3 at the bottom of the sling 2. At this time, the worker starts the winch 1, and the winch 1 slowly pays out the sling 2, moving the probe rod 3 at the bottom of the sling 2 below the liquid level of the location to be detected until the probe rod 3 reaches the top of the sediment layer below the liquid level. At this time, the worker starts the double-headed electric push rod 401, and the upper and lower output shafts of the double-headed electric push rod 401 extend outwards. While extending, it drives the first type of correction mechanism 6 and the auxiliary correction mechanism 7 to operate. The operating first type of correction mechanism 6 will straighten the rod body of the probe rod 3, causing the probe 4 inside the probe rod 3 to be vertically oriented towards the top of the sediment layer. At the same time, along with the extension of the output shaft at the lower end of the double-headed electric push rod 401, the probe 4 outside the output shaft at the lower end of the double-headed electric push rod 401 will be pushed, extending out from the inside of the probe rod 3 and gradually inserting into the inside of the sediment layer. During this process, the worker holds and observes the control tablet dynamically connected to the probe 4, and the tablet interface will display the real-time dynamic parameters of the probe 4. After the probe 4 extends 25 CM, it will be pulled by the double-headed electric push rod 401 to reset. Throughout the process, the current data of the entire process of the probe 4 will be displayed on the tablet, thereby obtaining the detection data result.

[0038] Among them, it should be supplemented and explained that: The pile member 501 includes two connecting wheels 5011 symmetrically installed on both sides of the base 5012, and both connecting wheels 5011 are slidably connected to the inside of the V-shaped column 502.

[0039] Furthermore, it is supplemented and explained that: When this device detects the thickness of the sediment layer in the pile hole, a number of longitudinal grooves 5013 are evenly opened along the longitudinal direction on the outside of the pile member 501, and the base 5012 is fixed to the ground by inserting rivets into the inside of the longitudinal grooves 5013; When this device is used to detect the thickness of the sediment layer below the liquid level at a location with an inner wall such as a shaft (at this time, additional circular pads are mostly installed on the top of the pile pit and shaft), a number of transverse grooves 5014 are evenly opened along the transverse direction on the outside of the pile member 501, and the base 5012 is fixed to the pad by inserting bolts into the inside of the transverse grooves 5014.

[0040] Refer to Figure 1 and Figure 2 , in a preferred embodiment, the positioning mechanism 5 includes pile members 501 symmetrically fixed on the ground. A V-shaped column 502 is slidably sleeved on the outside of the two pile members 501. Two pulleys 503 are symmetrically installed in the middle of the V-shaped column 502. The sling 2 passes between the two pulleys 503. A number of positioning grooves 504 are evenly opened on the outside of the V-shaped column 502, and the pile members 501 are fixed by squeezing through bolts passing through the positioning grooves 504.

[0041] The worker moves the entire device to the location to be detected, places the winch 1 on the ground, and at the same time measures the diameter length of the location to be detected (the liquid level where the sediment thickness is to be detected) in advance with measuring tools such as a tape measure and marks it. Then, the worker holds the V-shaped column 502 by hand and transports the V-shaped column 502 to the top of the location to be detected. After that, the two pile members 501 are respectively fixed at the pre-marked points. As the worker releases the support for the V-shaped column 502, the V-shaped column 502 affected by its own weight will slide centrally along the tops of the two pile members 501 to autonomously locate the center point to be detected. After the V-shaped column 502 is stationary, the worker holds a bolt and rotates it from the side of the V-shaped column 502 and the positioning groove 504 on the pile member 501 at the same horizontal line until the bolt and the pile member 501 are squeezed to form a fixation. After that, the worker passes one end of the sling 2 through the two pulleys 503 and hangs the probe 3 at the bottom of the sling 2.

[0042] Refer to Figure 1 、 Figures 4 to 8 In a preferred embodiment, a type of correction mechanism 6 further includes a sleeve rod 604 fixedly installed outside the gear 603, and a straight rod 605 is slidably installed at the end of the sleeve rod 604.

[0043] The worker starts the winch 1, and the winch 1 slowly pays out the sling 2 to move the probe 3 at the bottom of the sling 2 below the liquid level of the location to be detected until the probe 3 reaches the top of the sediment layer below the liquid level. At this time, the worker starts the double-headed electric push rod 401, and the output shaft at the upper end of the double-headed electric push rod 401 extends outwards. While extending, it pushes several racks 602, causing the racks 602 to move along the inside of the kit 601. While moving, it pushes the meshing gear 603, causing the gear 603 to drive the sleeve rod 604 and the straight rod 605 to turn outwards and squeeze against the inner wall of the location to be detected, thereby correcting the probe 3 in multiple directions so that the probe 3 is perpendicular to the top of the sediment layer. Among them, an auxiliary wheel 606 is rotatably installed at the outer end of the straight rod 605, and the auxiliary wheel 606 is in extrusion contact with the inner wall of the shaft. Along with the movement of the probe 3, it slides along the inner wall of the shaft. A spring 607 is fixedly connected between the straight rod 605 and the sleeve rod 604. When the outwards-folded straight rod 605 is in extrusion contact with the inner wall of the shaft, the spring 607 will be compressed according to the diameter of the shaft to adjust the relative length of the straight rod 605 and the sleeve rod 604.

[0044] It should be added that: This device is applicable to two usage scenarios. One is a pile hole without protrusions on the ground, and the other is a scenario with protrusions on the surface such as a pile pit or a shaft.

[0045] Refer to Figure 1 、 Figures 4 to 6 、 Figure 9, in a preferred embodiment, the auxiliary correction mechanism 7 further includes a pressing plate 703 fixedly installed at the end of the telescopic rod 702. A piston rod 704 is slidably installed inside the chamber 701, and a connecting rod 705 is rotatably installed between the piston rod 704 and the sleeve rod 604.

[0046] When the sleeve rod 604 flips, it will drive the connecting rod 705 to move downward. The connecting rod 705 will push the piston rod 704, causing the piston rod 704 to move vertically inside the chamber 701, thereby pressurizing the hydraulic oil located inside the chamber 701 and the telescopic rod 702, causing the telescopic rod 702 in the contracted state to extend, thereby pushing the pressing plate 703, causing the pressing plate 703 to extend outward. Thus, along with the vertical movement of the probe 3, it contacts the top of the sediment layer, increasing the contact area between the probe 3 and the top of the sediment layer and improving stability; wherein, a connecting piece 706 is sleeved and fixed on the outer side of the sleeve rod 604, and the connecting piece 706 is rotatably connected to the connecting rod 705.

[0047] Among them, the double-headed electric push rod 401 is a prior art, and its upper and lower output shafts can be independently controlled for telescoping. Its internal structure is specifically: two sets of motors arranged in opposite directions, the output end of the motor is connected to a lead screw, and a telescopic rod is threadedly connected to the outer surface of the lead screw. By independently controlling the rotation of the corresponding motor, the telescoping of a single head can be achieved, which will not be elaborated here.

[0048] Working principle: During use, the worker moves the entire device to the place to be detected, places the winch 1 on the ground, and at the same time measures the diameter of the pile hole in advance through measuring tools such as a tape measure, and marks the intersection point B of the diameter and the pile hole (as Figure 10 shown). Thereafter, the two pile members 501 are respectively fixed at the pre-marked point B, and at the same time, the V-shaped column 502 is carried to the top of the pile member 501. As the worker releases the support for the V-shaped column 502, the V-shaped column 502 affected by its own weight will slide centrally along the top of the connecting wheels 5011 on the sides of the two pile members 501, so that the two pulleys 503 are located at the central position of the pile hole to be measured. Until the V-shaped column 502 is stationary, the worker holds a bolt and rotates it from the positioning groove 504 on the side of the V-shaped column 502 and at the same horizontal line as the pile member 501 until the bolt presses against the connecting wheel 5011 to form a fixation; After that, the worker passes one end of the sling 2 through between the two pulleys 503 and suspends the sounding rod 3 at the bottom of the sling 2. Then the worker starts the winch 1, and the winch 1 slowly pays out the sling 2, moving the sounding rod 3 at the bottom of the sling 2 below the liquid level of the point to be detected until the sounding rod 3 reaches the top of the sediment layer below the liquid level. At this time, the worker starts the double-headed electric push rod 401. The output shaft at the upper end of the double-headed electric push rod 401 extends outwards. While extending, it pushes several racks 602, causing the racks 602 to move along the inside of the kit 601. While moving, it pushes the meshing gear 603, causing the gear 603 to drive the sleeve rod 604 and the straight rod 605 to turn outwards and press against the inner wall of the place to be detected, so as to correct the sounding rod 3 in multiple directions, causing the sounding rod 3 to be perpendicular to the top of the sediment layer. While the sleeve rod 604 turns, it will drive the connecting rod 705 to push downwards. The connecting rod 705 will push the piston rod 704, causing the piston rod 704 to move vertically along the inside of the chamber 701, thereby pressurizing the hydraulic oil in the chamber 701 and the telescopic rod 702, causing the telescopic rod 702 in the contracted state to extend, thereby pushing the pressing plate 703, causing the pressing plate 703 to extend outwards. Thus, along with the vertical movement of the sounding rod 3, it contacts the top of the sediment layer. And through the extension of the pressing plate 703, the contact area with the sediment layer is increased, ensuring the stability of the subsequent vertical downward movement of the probe 4 and reducing the possibility of its inclination. At the same time, along with the extension of the output shaft at the lower end of the double-headed electric push rod 401, the probe 4 located outside the output shaft of the double-headed electric push rod 401 will be pushed, extending out from the inside of the sounding rod 3 and gradually inserting into the inside of the sediment layer. During this process, the worker holds and observes the control tablet dynamically connected to the probe 4. The tablet interface will display the real-time dynamic parameters of the probe 4. After the probe 4 extends 25 CM, it will be pulled by the output shaft at the lower end of the double-headed electric push rod 401 to reset. During the whole process, the current data of the whole process of the probe 4 will be displayed on the tablet, so as to obtain the detection data result; The above working principle of the probe 4 is the prior art. Specifically: when the sounding rod 3 contacts the surface of the sediment layer inside the pile hole, the built-in probe 4 will extend out and enter the sediment layer at a constant speed. When the probe 4 contacts the bearing stratum, the force on the probe increases, and the change curve of the internal current value will show an obvious mutation phenomenon. Since the movement speed of the probe 4 remains constant, by recording the time from when the probe 4 starts to extend until it contacts the bearing stratum, the movement length of the probe 4 can be calculated, and this length is the thickness of the sediment layer.

[0049] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A sediment thickness detection device, comprising a winch (1), a sling (2) wound inside the winch (1), a probe (3) installed at one end of the sling (2), and a probe (4) received inside the probe (3), characterized in that: A double-headed electric push rod (401) is installed inside the probe rod (3), the probe (4) is fixedly connected to the output shaft at the lower end of the double-headed electric push rod (401), and a positioning mechanism (5) is provided on the side of the sling (2); A correction mechanism (6) is arranged on the outside of the probe rod (3), and the correction mechanism (6) comprises a plurality of sets (601) evenly mounted on the outside of the top of the probe rod (3), a rack (602) is slidably mounted inside each set (601), an end of the rack (602) penetrates into the inside of the probe rod (3) and is fixedly connected to the output shaft at the upper end of the double-headed electric push rod (401), and a gear (603) is rotatably mounted inside each set (601), and the gear (603) is meshingly connected to the rack (602); An auxiliary correction mechanism (7) is provided at the bottom of the probe rod (3), and the auxiliary correction mechanism (7) comprises a plurality of chambers (701) uniformly fixed to the outside of the bottom of the probe rod (3), and a telescopic rod (702) is provided on the side of the chamber (701), and the interior of the telescopic rod (702) and the chamber (701) are both filled with hydraulic oil; The positioning mechanism (5) is used to preliminarily position the probe rod (3), and then the detection point of the probe (4) is precisely positioned by the first-class correction mechanism (6) and the auxiliary correction mechanism (7).

2. A sediment thickness detection device according to claim 1, characterized in that: The positioning mechanism (5) comprises pile members (501) symmetrically fixed on the ground, the outer sides of the two pile members (501) are slidably sleeved with a V-shaped column (502), the middle of the V-shaped column (502) is symmetrically mounted with two pulleys (503), the sling (2) passes between the two pulleys (503), and the outer sides of the V-shaped column (502) are evenly provided with a plurality of positioning grooves (504), and bolts are passed through the positioning grooves (504) and squeezed to fix the pile members (501).

3. A sediment thickness detection device according to claim 1, characterized in that: The first type of correction mechanism (6) further comprises a sleeve rod (604) fixedly mounted on the outside of the gear (603), and a straight rod (605) is slidably mounted on the end of the sleeve rod (604).

4. A sediment thickness detection device according to claim 3, characterized in that: The auxiliary correction mechanism (7) further comprises a pressure plate (703) fixedly mounted on the end of the telescopic rod (702); a piston rod (704) is slidably mounted inside the chamber (701); and a connecting rod (705) is rotatably mounted between the piston rod (704) and the sleeve rod (604).

5. The sediment thickness detection device according to claim 2, characterized in that: The pile member (501) comprises two connecting wheels (5011) symmetrically mounted on both sides of a base (5012), and the two connecting wheels (5011) are both slidably connected to the inside of the V-shaped column (502).

6. A sediment thickness detection device according to claim 5, characterized in that: The outer side of the pile member (501) is uniformly provided with a plurality of longitudinal grooves (5013) along the longitudinal direction, and the base (5012) is fixed to the ground by inserting rivets into the longitudinal grooves (5013).

7. The sediment thickness detection device according to claim 5, characterized in that: The outer side of the pile member (501) is uniformly provided with a plurality of transverse grooves (5014) in the transverse direction, and the base (5012) is fixed to the pad by bolts inserted into the transverse grooves (5014).

8. The sediment thickness detection device according to claim 3, characterized in that: An auxiliary wheel (606) is rotatably mounted on the outer end of the straight rod (605), and the auxiliary wheel (606) is pressed and contacted with the inner wall of the shaft.

9. The sediment thickness detection device according to claim 3, characterized in that: A spring (607) is fixedly connected between the straight rod (605) and the sleeve rod (604).

10. The sediment thickness detection device according to claim 4, characterized in that: A connecting piece (706) is sleeved and fixed on the outer side of the sleeve rod (604), and the connecting piece (706) and the connecting rod (705) are rotatably connected.

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