Collapsible loess stratum deep hole detection equipment

Abstract

The utility model relates to the technical field of geological detection, in particular to collapsible loess stratum deep hole detection equipment which comprises a first telescopic rod, a reciprocating screw rod is rotatably connected in the first telescopic rod, a motor is fixedly connected to the top of the first telescopic rod, and the output end of the motor is fixedly connected with the reciprocating screw rod. And one side of the first telescopic rod is fixedly connected with an air outlet pipe, and the outer surface of the air outlet pipe is fixedly connected with a first valve. The soil sampling device has the advantages that due to the friction force between the second arc-shaped plate and the soil, the soil does not fall off when rising in the sampling rod, the pressure is reduced through the first spring, the situation that the soil is internally deformed and the stability of the soil is affected due to the fact that the pressure is too large is prevented, the soil can be more easily ejected out due to the gaps, and the soil sampling device is convenient to use. The pressure on the soil is reduced, and a worker takes out the soil from the sampling tube through a part of ejected soil, so that the soil can be conveniently taken out, and the stability of the soil is not damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of geological detection, in particular to deep hole detection equipment for collapsible loess strata. Background Art

[0002] Collapsible loess refers to soil that undergoes significant additional deformation due to structural destruction of the soil after immersion in water under the action of the self-weight stress of the overlying soil layer, or under the combined action of self-weight stress and additional stress. When collapsible loess is soaked in water under a certain pressure, the soil structure is rapidly destroyed and significant additional subsidence occurs.

[0003] In the related art, when carrying out construction on collapsible loess foundation, it is necessary to consider the possible harm to the project caused by additional settlement due to foundation collapse. Therefore, it is necessary to drill deep holes in the soil layer before construction and insert sampling rods into the deep holes for sampling. The sampling rods are hollow cylindrical rods.

[0004] The problems it has are: during the sampling process, loess samples are prone to fall off when the sampling rod is pulled out, and after the sampling tube has sampled the soil, the sampling tube and the soil are tightly fitted when the soil is separated. Improper operation of soil removal will destroy the overall structure of the soil, making it inconvenient to observe the soil layer structure.

[0005] In this regard, the utility model proposes a deep hole detection device for collapsible loess strata to solve the problem. Utility Model Content

[0006] The purpose of the present invention is to solve at least one of the above technical deficiencies.

[0007] To this end, one purpose of the utility model is to provide a deep hole detection device for collapsible loess strata to solve the problems mentioned in the background technology and overcome the shortcomings of the prior art.

[0008] In order to achieve the above-mentioned purpose, an embodiment of the utility model on one hand provides a deep hole detection device for collapsible loess strata, comprising a first telescopic rod, the interior of the first telescopic rod is rotatably connected to a reciprocating screw, the top of the first telescopic rod is fixedly connected to a motor, the output end of the motor is fixedly connected to the reciprocating screw, one side of the first telescopic rod is fixedly connected to an air outlet pipe, the outer surface of the air outlet pipe is fixedly connected to a first valve, one side of the first telescopic rod is fixedly connected to an air inlet pipe, and the outer surface of the reciprocating screw is threadedly connected to a second telescopic rod;

[0009] A sampling tube is fixedly connected to the bottom of the second telescopic rod, and four arc-shaped grooves are opened inside the sampling tube, and the four arc-shaped grooves are evenly distributed around the circumference. A pressure-applying component is slidably connected inside the four arc-shaped grooves. Two first connecting tubes are fixedly connected to the top of the sampling tube, and the other ends of the two first connecting tubes are fixedly connected to the first telescopic rod. A first airbag is fixedly connected to the outer surface of the two first connecting tubes. Interconnected communicating holes are opened inside the arc-shaped grooves, and the communicating holes are distributed around the inner wall of the sampling tube. A ejection component is arranged on the top of the sampling tube.

[0010] Preferably, any of the above schemes comprises a first arc-shaped plate, one end of which is fixedly connected to a plurality of first springs, the plurality of first springs are linearly and evenly distributed, one end of the plurality of first springs is fixedly connected to a second arc-shaped plate, and the curvature of the first arc-shaped plate is the same as that of the sampling tube.

[0011] Preferably, from any of the above schemes, the ejection assembly includes a second airbag, the top of the second airbag is fixedly connected with two exhaust pipes, the two exhaust pipes are symmetrically distributed along the longitudinal axis of the first telescopic rod, the other ends of the two exhaust pipes are fixedly connected to the top of the first telescopic rod, the top of the second airbag is fixedly connected with two air supply pipes, each of the two air supply pipes is fixedly connected with a second valve, the other ends of the two air supply pipes are fixedly connected to the corresponding first connecting pipes, the bottom of the second airbag is fixedly connected with two second connecting pipes, and the other ends of the two second connecting pipes are fixedly connected to the top of the sampling tube.

[0012] Preferably, any of the above schemes is that a plurality of second springs are fixedly connected to the inner top wall of the second telescopic rod, a circular plate is fixedly connected to the other ends of the plurality of second springs, an outer surface of the circular plate overlaps the interior of the sampling tube, and a cavity is left between the circular plate and the inner bottom of the sampling tube.

[0013] Preferably, any of the above schemes is that two sliding grooves are provided on the inner wall of the first telescopic rod, and the two sliding grooves are symmetrically distributed along the longitudinal axis of the first telescopic rod; the outer surface of the second telescopic rod is fixedly connected to two slideways, and the two slideways are symmetrically distributed along the longitudinal axis of the second telescopic rod, and the slideways are slidably connected to the inside of the sliding grooves.

[0014] Preferably, any of the above solutions is that both ends of the first telescopic rod are fixedly connected to a handle, and the handle is located below the air outlet pipe.

[0015] Compared with the prior art, the advantages and beneficial effects of the utility model are:

[0016] 1. The squeezed air first squeezes the first arc plate, and the first arc plate is squeezed to press the first spring. The contraction of the first spring drives the first arc plate to move forward. In the present invention, because the first spring absorbs part of the pressure, the force of the second arc plate on the soil will not be very large. The second arc plate is moved to squeeze the small gap between the soil and the second arc plate, thereby increasing the contact area and friction between the soil and the second arc plate. The friction between the second arc plate and the soil prevents the soil from falling when it rises in the sampling stem. The pressure is reduced by the first spring to prevent excessive pressure from causing deformation inside the soil and affecting the stability of the soil.

[0017] 2. When the sampling tube is completely raised to the ground, the second valve on the air pipe can be opened, and the air will flow into the second air bag, and the air will be sent into the cavity through the second connecting tube. At this time, the negative pressure inside the cavity disappears, the second spring stretches, and the circular plate can push out the soil when it moves downward. Because the second arc plate has supported the soil before, a small gap is left between the soil and the second arc plate when the second arc plate is retracted. When the circular plate pushes out the soil, the existence of these gaps can make the soil easier to be pushed out, reducing the pressure on the soil. The staff takes the soil out of the sampling tube through a part of the pushed-out soil, which not only makes it convenient to take out the soil but also does not destroy the stability of the soil, achieving two goals at one stroke.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 It is a schematic diagram of the cross-sectional structure of the interior of the utility model;

[0021] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 3 According to the utility model Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0023] Figure 4 According to the utility model Figure 1 A schematic diagram of the enlarged structure at B in the middle;

[0024] Figure 5 It is a structural schematic diagram of the bottom of the second telescopic rod according to the utility model.

[0025] In the figure: 1. first telescopic rod; 101. reciprocating screw; 102. motor; 103. air outlet pipe; 104. air inlet pipe; 105. slide; 106. first valve; 107. handle; 2. second telescopic rod; 201. sampling tube; 202. arc groove; 203. first connecting pipe; 204. first air bag; 205. slide; 206. cavity; 207. connecting hole; 208. bump; 3. pressure assembly; 301. first arc plate; 302. first spring; 303. second arc plate; 4. ejection assembly; 401. second air bag; 402. exhaust pipe; 403. air supply pipe; 404. second valve; 405. second connecting pipe; 406. round plate; 407. second spring. DETAILED DESCRIPTION

[0026] like Figures 1 to 5As shown, a deep hole detection device for collapsible loess strata comprises: a first telescopic rod 1, the interior of the first telescopic rod 1 is rotatably connected to a reciprocating screw 101, the top of the first telescopic rod 1 is fixedly connected to a motor 102, the motor 102 in the present invention drives the reciprocating screw 101 to rotate clockwise, at which time a second telescopic rod 2 moves downward, and then the second telescopic rod 2 is driven to rotate by the motor 102 again, and the second telescopic rod 2 moves upward, the output end of the motor 102 is fixedly connected to the reciprocating screw 101, one side of the first telescopic rod 1 is fixedly connected to an air outlet pipe 103, the outer surface of the air outlet pipe 103 is fixedly connected to a first valve 106, the first telescopic rod One side of the reciprocating screw 101 is fixedly connected with an air inlet pipe 104. In the present invention, a one-way valve is installed on the air inlet pipe 104, so that air can only enter but not exit. The outer surface of the reciprocating screw 101 is threadedly connected with the second telescopic rod 2. In the present invention, a sealing ring is fixedly connected to the outer surface of the second telescopic rod 2. A baffle is fixedly provided at the bottom of the reciprocating screw 101 to prevent the second telescopic rod 2 from rotating out of the first telescopic rod 1. Sealing rings are arranged on both sides of the threaded portion of the reciprocating screw 101, and the gap between the reciprocating screw 101 and the second telescopic rod 2 can be filled by the sealing ring. A sealing ring is arranged near the threaded portion to ensure that the thread gap can be filled when the reciprocating screw 101 and the second telescopic rod 2 rotate to prevent air from entering. In order to prevent leakage of the body, the present invention is firstly driven to rotate the reciprocating screw 101 by the motor 102 during use, and the reciprocating screw 101 drives the second telescopic rod 2 to move downward. When the second telescopic rod 2 moves downward, the air inside the second airbag 401 and the cavity 206 can be extracted through the exhaust pipe 402. The exhaust pipe 402 is equipped with a one-way valve, which only allows air to be discharged but not taken in. The extracted air enters the first telescopic rod 1. At this time, the air inside the second airbag 401 and the cavity 206 is evacuated, the second airbag 401 becomes flat, and negative pressure is formed inside the cavity 206. When negative pressure is formed in the cavity 206, the second spring 407 drives the circular plate 406 to contract. When the reciprocating screw When 101 drives the second telescopic rod 2 to move to the bottom of the air inlet pipe 104, the air inside the second airbag 401 and the cavity 206 is evacuated, and at this time, the reciprocating screw 101 drives the second telescopic rod 2 to move downward to inlet air into the first telescopic rod 1 through the air inlet pipe 104. When the top of the second telescopic rod 2 moves to the top of the baffle, the handle 107 can be used to push the device deep into the deep hole, because at this time the adjustable length of the second telescopic rod 2 has extended out of the first telescopic rod 1. When the bottom of the sampling tube 201 contacts the bottom of the deep hole, the sampling tube 201 can be pressed downward by the handle 107 to allow the sampling tube 201 to sample the soil in the deep hole.

[0027] The bottom of the second telescopic rod 2 is fixedly connected to a sampling tube 201, and four arc grooves 202 are opened inside the sampling tube 201, and the four arc grooves 202 are evenly distributed around the circumference. A pressure component 3 is slidably connected inside the four arc grooves 202. Two first connecting tubes 203 are fixedly connected to the top of the sampling tube 201. The other ends of the two first connecting tubes 203 are fixedly connected to the first telescopic rod 1. The outer surfaces of the two first connecting tubes 203 are fixedly connected to a first airbag 204. The first airbag 204 in the present invention is fixedly connected to the first connecting tube 203. A solenoid valve is installed on the connecting pipe 203, and a pressure sensor is installed inside the first airbag 204. When the soil inside the sampling tube 201 has been taken out, the reciprocating screw 101 can be driven to rotate by the motor 102, and the reciprocating screw 101 drives the second telescopic rod 2 to rise. When the second telescopic rod 2 rises, it squeezes the air inside the first telescopic rod 1 into the first connecting pipe 203. The first connecting pipe 203 discharges the gas into the first airbag 204 and the arc groove 202 respectively. Because the arc groove 202 has been filled with air, the four The arc grooves 202 are interconnected through the connecting hole 207, and the air can also flow in the four arc grooves 202 through the connecting hole 207. The air inside the arc groove 202 will be squeezed to generate pressure. Because the pressure component 3 slides in the arc groove 202, the squeezed air will squeeze the pressure component 3. A part of the gas in the first connecting pipe 203 enters the first airbag 204. The first airbag 204 can play the role of storing gas. When the air inside the first airbag 204 reaches the maximum pressure, The sensor transmits a signal to the control box to close the solenoid valve on the first connecting pipe 203 through the control box. After closing the solenoid valve, the first valve 106 on the air outlet pipe 103 is manually opened to allow the remaining air inside the first telescopic rod 1 to be discharged from the air outlet pipe 103. The first valve 106 is closed except for being opened for exhaust. A connecting hole 207 is provided inside the arc groove 202. The connecting holes 207 are distributed along the circumference of the inner wall of the sampling tube 201. A ejection assembly 4 is provided on the top of the sampling tube 201.

[0028] The pressure-applying assembly 3 includes a first curved plate 301, one end of which is fixedly connected to a plurality of first springs 302, which are evenly distributed in a linear shape, one end of which is fixedly connected to a second curved plate 303, the curvature of the first curved plate 301 being the same as that of the sampling tube 201, the air being squeezed first squeezes the first curved plate 301, the first curved plate 301 is squeezed to apply pressure to the first spring 302, the first spring 302 contracts, and the contraction of the first spring 302 drives the first curved plate 301 to move forward, the first spring 302 can absorb part of the pressure of the first curved plate 301, and the remaining part of the pressure drives the second curved plate 303 to move toward the inside of the sampling tube 201, and the second curved plate 303 presses the sampling tube 201 is used to support the soil inside. The supported soil will not fall when it rises because of the pressure. In the present invention, since the first spring 302 absorbs part of the pressure, the force of the second arc plate 303 on the soil will not be very large, and it only serves to increase the contact area between the second arc plate 303 and the soil. Because the soil is loose, there will be some small gaps between the soil and the second arc plate 303. These small gaps are squeezed by moving the second arc plate 303, thereby increasing the contact area and friction between the soil and the second arc plate 303. By increasing the contact area and friction, the soil will not fall when it rises in the sampling stem. The first spring 302 is used to reduce the pressure to prevent excessive pressure from causing deformation inside the soil and affecting the stability of the soil.

[0029] The ejection assembly 4 includes a second airbag 401, and two exhaust pipes 402 are fixedly connected to the top of the second airbag 401, and the two exhaust pipes 402 are symmetrically distributed along the longitudinal axis of the first telescopic rod 1, and the other ends of the two exhaust pipes 402 are fixedly connected to the top of the first telescopic rod 1. Two air supply pipes 403 are fixedly connected to the top of the second airbag 401, and a second valve 404 is fixedly connected to each of the two air supply pipes 403, and the other ends of the two air supply pipes 403 are fixedly connected to the corresponding first connecting pipe 203. Two second connecting pipes 405 are fixedly connected to the bottom of the second airbag 401, and the other ends of the two second connecting pipes 405 are fixedly connected to the top of the sampling tube 201. When the sampling tube 201 is completely raised to the ground, the second valve 404 on the air supply pipe 403 can be opened, and the second valve 404 can only be opened when the first airbag is released. The air inside the first airbag 204 will be opened only when the second valve 404 is opened, and it will be closed for the rest of the time. After the second valve 404 is opened, the air inside the first airbag 204 and the air inside the arc groove 202 will flow into the second airbag 401. At this time, the air inside the arc groove 202 is released and no longer presses on the pressure component 3. The first spring 302 stretches the first arc plate 301 to return to its original position. The second arc plate 303 also returns to its original position driven by the first spring 302 and the first arc plate 301, and stops supporting the soil. The second airbag 401 in the present invention first enters the air, and then discharges the air into the cavity 206. The second airbag 401 can play a buffering role to prevent the gas from being directly discharged into the cavity 206, and then cause the second spring 407 to drive the circular plate 406 to have excessive impact and break the stability of the external soil.

[0030] A plurality of second springs 407 are fixedly connected to the inner top wall of the second telescopic rod 2, and a circular plate 406 is fixedly connected to the other end of the plurality of second springs 407. The outer surface of the circular plate 406 overlaps with the interior of the sampling tube 201, and a cavity 206 is left between the circular plate 406 and the inner bottom of the sampling tube 201. Because there is a negative pressure in the cavity 206, air will be sent into the cavity 206 through the second connecting pipe 405. At this time, the negative pressure inside the cavity 206 disappears, and the second spring 407 stretches out. The second spring 407 drives the circular plate 406 to move. When the circular plate 406 moves downward, the soil can be ejected. Because the second arc plate 303 has previously supported the soil, when the second arc plate 303 is retracted, the soil and the second arc plate 303 are connected. A small amount of gap is left in between, and when the circular plate 406 pushes out the soil, the existence of these gaps allows the soil to be pushed out more easily. The distance that the soil is pushed out of the novel invention is the distance that the second spring 407 moves, and a part of the soil is pushed out of the outside of the sampling tube 201, and the soil is taken out of the sampling tube 201 by manual removal. Because if all the soil is pushed out by the second spring 407, the soil will be subjected to greater pressure, causing deformation inside the soil and affecting the stability of the soil. The novel invention reduces the pressure on the soil by pushing out a part of the soil, and the staff takes the soil out of the sampling tube 201 through the pushed-out part of the soil, which not only makes it convenient to take out the soil but also does not destroy the stability of the soil, achieving two goals at one stroke.

[0031] Two slide grooves 105 are provided on the inner wall of the first telescopic rod 1, and the two slide grooves 105 are symmetrically distributed along the longitudinal axis of the first telescopic rod 1. Two slideways 205 are fixedly connected to the outer surface of the second telescopic rod 2, and the two slideways 205 are symmetrically distributed along the longitudinal axis of the second telescopic rod 2. The slideway 205 is slidably connected to the inside of the slide groove 105. By cooperating with the slide groove 105 and the slideway 205, the stability between the first telescopic rod 1 and the second telescopic rod 2 can be improved, and the second telescopic rod 2 can be prevented from causing the sampling tube 201 to vibrate. If vibration occurs, the soil will be unstable.

[0032] In the present invention, a protrusion 208 is installed inside the arc groove 202 to prevent the first arc plate 301 from falling out of the arc groove 202 when not in operation, and an arc ring 408 is provided on the circular plate 406. The arc ring 408 is provided along the outer circumference of the circular plate 406, so that the circular plate 406 can better cooperate with the second arc plate 303 when moving downward, and prevent the circular plate 406 from conflicting with the second arc plate 303. Because the second arc plate 303 has not been completely retracted into the arc groove 202 during the downward movement of the circular plate 406, the outer side of the circular plate 406 will conflict with the top of the second arc plate 303. The arc ring 408 allows the circular plate 406 to directly pass through the second arc plate 303 to squeeze the soil.

[0033] Both ends of the first telescopic rod 1 are fixedly connected with a handle 107 . The handle 107 is located below the air outlet pipe 103 . When in use, the staff needs to hold the handle 107 with both hands throughout the whole process.

[0034] The first connecting pipe 203, the exhaust pipe 402 and the gas delivery pipe 403 in the present invention are all hoses, which will not affect the extension and retraction between the first telescopic rod 1 and the second telescopic rod 2, nor will they affect the normal flow of gas.

Claims

1. A deep hole detection device for collapsible loess strata, characterized by: The invention comprises a first telescopic rod (1), wherein a reciprocating screw (101) is rotatably connected inside the first telescopic rod (1), a motor (102) is fixedly connected to the top of the first telescopic rod (1), an output end of the motor (102) is fixedly connected to the reciprocating screw (101), one side of the first telescopic rod (1) is fixedly connected to an air outlet pipe (103), an outer surface of the air outlet pipe (103) is fixedly connected to a first valve (106), one side of the first telescopic rod (1) is fixedly connected to an air inlet pipe (104), and the outer surface of the reciprocating screw (101) is threadedly connected to a second telescopic rod (2); The bottom of the second telescopic rod (2) is fixedly connected to a sampling tube (201), the interior of the sampling tube (201) is provided with four arcuate grooves (202), the four arcuate grooves (202) are evenly distributed around the circumference, the interior of each of the four arcuate grooves (202) is slidably connected to a pressure-applying assembly (3), the top of the sampling tube (201) is fixedly connected to two first connecting tubes (203), the other ends of the two first connecting tubes (203) are fixedly connected to the first telescopic rod (1), the outer surfaces of the two first connecting tubes (203) are fixedly connected to a first air bag (204), the interior of the arcuate groove (202) is provided with interconnected communicating holes (207), the communicating holes (207) are distributed around the inner wall of the sampling tube (201), and the top of the sampling tube (201) is provided with an ejection assembly (4).

2. The deep hole detection equipment for collapsible loess strata according to claim 1 is characterized by: The pressure-applying assembly (3) comprises a first arc-shaped plate (301), one end of the first arc-shaped plate (301) is fixedly connected to a plurality of first springs (302), the plurality of first springs (302) are evenly distributed in a linear shape, one end of the plurality of first springs (302) is fixedly connected to a second arc-shaped plate (303), and the curvature of the first arc-shaped plate (301) is the same as that of the sampling tube (201).

3. The deep hole detection equipment for collapsible loess strata according to claim 2 is characterized by: The ejection assembly (4) comprises a second airbag (401), the top of the second airbag (401) is fixedly connected to two exhaust pipes (402), the two exhaust pipes (402) are symmetrically distributed along the longitudinal axis of the first telescopic rod (1), the other ends of the two exhaust pipes (402) are fixedly connected to the top of the first telescopic rod (1), the top of the second airbag (401) is fixedly connected to two air supply pipes (403), the two air supply pipes (403) are fixedly connected to a second valve (404), the other ends of the two air supply pipes (403) are fixedly connected to the corresponding first connecting pipe (203), the bottom of the second airbag (401) is fixedly connected to two second connecting pipes (405), the other ends of the two second connecting pipes (405) are fixedly connected to the top of the sampling tube (201).

4. The deep hole detection equipment for collapsible loess strata according to claim 3 is characterized by: A plurality of second springs (407) are fixedly connected to the inner top wall of the second telescopic rod (2); a circular plate (406) is fixedly connected to the other ends of the plurality of second springs (407); an outer surface of the circular plate (406) overlaps the interior of the sampling tube (201); and a cavity (206) is left between the circular plate (406) and the inner bottom of the sampling tube (201).

5. The deep hole detection equipment for collapsible loess strata according to claim 4 is characterized by: Two slide grooves (105) are provided on the inner wall of the first telescopic rod (1), and the two slide grooves (105) are symmetrically distributed along the longitudinal axis of the first telescopic rod (1). Two slideways (205) are fixedly connected to the outer surface of the second telescopic rod (2), and the two slideways (205) are symmetrically distributed along the longitudinal axis of the second telescopic rod (2). The slideways (205) are slidably connected to the inside of the slide grooves (105).

6. The deep hole detection equipment for collapsible loess strata according to claim 5 is characterized by: Both ends of the first telescopic rod (1) are fixedly connected to a handle (107), and the handle (107) is located below the air outlet pipe (103).

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