A soil sample sampling device for construction

Abstract

The invention discloses a soil sample sampling device for construction, belongs to the technical field of soil sample sampling, solves the problem that it is inconvenient to sample soil layers with high fluidity and it is inconvenient to sample at a fixed depth. The device comprises an upper and a lower mounting frame, a support column is mounted at an equal angle between the two mounting frames, a longitudinal moving platform is arranged between the two mounting frames, a drilling sampling assembly is arranged below the longitudinal moving platform, the drilling sampling assembly comprises a drill rod, a drill bit unit is arranged at the bottom end of the drill rod, a sampling groove is arranged inside the drill rod, the sampling groove penetrates to the bottom end of the drill rod, a negative pressure chamber is arranged inside the drill rod, and the negative pressure chamber is arranged above the sampling groove; in the present invention, when the drilling part is moved to the sampling position required during operation, the drill rod moves upward and separates from the drilling part, so that the sampling groove is opened, and soil enters the sampling groove through the space between the drill rod and the drilling part to complete the sampling, thereby facilitating sampling at a soil layer at a required depth.

Description

Technical Field

[0001] The invention belongs to the technical field of soil sample sampling, and in particular relates to a soil sample sampling device for construction. Background Art

[0002] my country is a country with a long coastline. For example, Ningbo, Jiangsu, Cangzhou, Hebei, and Shanghai are all famous coastal cities. Under the influence of ocean currents and inland rivers, coastal cities are prone to sediment accumulation. The sediment particles are loose, highly fluid, and have a low carrying capacity. Therefore, during construction, it is necessary to sample the soil layer below the construction location. It is necessary to make certain adjustments to the foundation construction method according to the properties of the sediment at different soil depths at different construction locations. Therefore, it is necessary to sample the sediment at different soil depths at fixed points. The existing sampling equipment generally uses a hollow sampling tube. As the drill bit moves downward, the soil at the corresponding position is filled in the sampling tube to complete the sampling. However, there are still the following defects:

[0003] During sampling, due to the high fluidity of the sediment, when the sampling tube is pulled out, the sediment is discharged under the action of gravity, resulting in poor sampling effect and inconvenience in point sampling of the soil layer at the required depth. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a soil sample sampling device for construction, which effectively solves the problem of inconvenience in sampling highly fluid soil layers and inconvenience in deep fixed-point sampling.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a soil sample sampling device for construction, comprising two upper and lower mounting frames, a support column is installed at an equal angle between the two mounting frames, a longitudinal moving platform is arranged between the two mounting frames, and a drilling sampling assembly is arranged below the longitudinal moving platform;

[0006] The drilling sampling assembly includes a drill rod, a drill bit unit is arranged at the bottom end of the drill rod, a sampling groove is opened inside the drill rod, the sampling groove runs through to the bottom end of the drill rod, a negative pressure chamber is opened inside the drill rod, the negative pressure chamber is arranged above the sampling groove, a filter plate is installed between the sampling groove and the negative pressure chamber, an air supply chamber is opened inside the drill rod, a first connecting pipe and a second connecting pipe are respectively installed at the top end of the side wall of the drill rod, a clamping fixing unit is installed on the outside of the negative pressure chamber, and an exhaust pushing unit is installed at the bottom end of the air supply chamber.

[0007] Preferably, the air supply chamber is coaxially arranged on the outside of the negative pressure chamber, the first connecting tube is connected to the negative pressure chamber, the second connecting tube is connected to the air supply chamber, and an air pump is installed on the top of the mounting frame. When connection is needed, the suction end of the air pump is connected to the first connecting tube through a hose, and the exhaust end of the air pump is connected to the second connecting tube through a hose.

[0008] Preferably, the drill unit includes a drilling part arranged below the drill rod, the diameter of the drilling part is larger than the diameter of the drill rod, a drill head is installed at the bottom end of the drilling part, a spiral blade is installed on the outside of the drilling part, a bottom cone surface is provided at the bottom end of the drill rod, the bottom cone surface is inclined downward at one end close to the sampling slot, and the top wall of the drilling part is in close contact with the bottom wall of the bottom cone surface.

[0009] Preferably, the drill rod is provided with plate grooves at equal angles inside, the plate grooves are arranged at equal angles on the circumference of the sampling groove, a bottom groove is provided at the bottom end of the plate groove, the bottom groove passes through to the bottom of the bottom conical surface, a sliding plate is slidably installed inside the plate groove, a bottom rod is fixedly installed at the bottom end of the sliding plate, the bottom end of the bottom rod passes through the bottom groove and is fixedly connected to the drilling part, an extrusion arc surface is provided at the top end of the sliding plate, and a card groove is provided on the side of the sliding plate close to the sampling groove.

[0010] Preferably, the snap-fit ​​fixing unit includes an outer movable groove opened on the side of the plate groove close to the negative pressure chamber, a clamping block is movably installed inside the outer movable groove, a first spring is symmetrically installed on the side of the clamping block close to the negative pressure chamber, one end of the first spring is fixedly connected to the inner wall of the end of the outer movable groove, a first pressure-bearing inclined surface is opened on the bottom of the other end of the clamping block, the bottom end of the first pressure-bearing inclined surface is inclined toward the side of the negative pressure chamber, and the other end of the clamping block is inserted into the inside of the clamping groove.

[0011] Preferably, inner movable grooves are opened at equal angles on the inner wall of the negative pressure chamber, the inner movable grooves correspond to the outer movable grooves one by one, a connecting groove is opened between the outer movable grooves and the inner movable grooves, a piston block is movably installed inside the inner movable groove, a connecting rod is installed between the piston block and the clamping block, and the connecting rod passes through the connecting groove.

[0012] Preferably, the exhaust pushing unit includes a receiving groove opened at the top of the plate groove, one end of the receiving groove passes through to the outside of the drill rod, a ventilation groove is opened at the top of the receiving groove, the top of the ventilation groove is connected with the air supply chamber, a moving block is movably installed inside the receiving groove, the outer wall of the moving block is tightly attached to the interior of the receiving groove, a second spring is symmetrically installed on one side of the moving block close to the negative pressure chamber, and one end of the second spring is fixedly connected to the end inner wall of the receiving groove.

[0013] Preferably, the movable block is located on the side of the ventilation groove away from the negative pressure chamber, a transverse exhaust groove is opened inside the movable block, one end of the transverse exhaust groove passes through to the side of the movable block close to the negative pressure chamber, longitudinal exhaust grooves are opened equidistantly inside the movable block, the top of the longitudinal exhaust groove is connected to the bottom of the end of the transverse exhaust groove away from the negative pressure chamber, the bottom end of the longitudinal exhaust groove passes through to the bottom of the movable block, a positioning groove is opened at the bottom end of the movable block, a second pressure-bearing slope is opened on the side of the positioning groove close to the negative pressure chamber, the positioning groove is located below the transverse exhaust groove and on the side of the longitudinal exhaust groove close to the negative pressure chamber, and the top end of the sliding plate is inserted into the interior of the positioning groove.

[0014] Preferably, the top end of the drill rod is connected to the output end of the rotating motor, the rotating motor is fixedly installed at the top end of the longitudinal moving platform, a guide rod is installed between the two mounting frames, the longitudinal moving platform is slidably connected to the guide rod, a screw is rotatably installed between the two mounting frames, the screw is threadedly connected to the longitudinal moving platform, the top end of the screw is fixedly connected to the output shaft of the driving motor, the driving motor is fixedly installed at the top end of the upper mounting frame, and moving wheels are installed at the four corners of the bottom end of the lower mounting frame.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1) During operation, the drilling part and the drill rod can be separated by the arrangement. During the drilling process, the card block is engaged with the card slot, so that the bottom end of the drill rod is tightly fixed to the top wall of the drilling part. When the sampling position is required, the card block is disengaged from the card slot, and the drill rod moves upward and separates from the drilling part, so that the sampling slot is opened, and the soil passes through the drill rod and the drilling part into the sampling slot to complete the sampling. After the sampling is completed, the drilling part and the drill rod are re-fixed, so as to facilitate the fixed-point sampling at the soil layer with the required depth, and facilitate the sampling of the soil with greater fluidity;

[0017] 2) During operation, after the drilling unit is drilled to the required depth, the air pump is connected to the first connecting pipe and the second connecting pipe, and negative pressure is generated in the negative pressure chamber by the air pump, which generates attraction to the piston block, so that the clamping block is disengaged from the clamping slot. At the same time, after the drilling unit is separated from the drill rod, the negative pressure generates suction to the soil, so that the soil enters the sampling slot, which is convenient for sampling;

[0018] 3) During operation, when the drilling part is separated from the drill rod, the sliding plate moves downward inside the plate groove and disengages from the positioning groove, and the moving block moves outward under the elastic force of the second spring. When the air pump is turned on, the air in the negative pressure chamber can be driven to spray downward toward the drill rod through the longitudinal exhaust groove, thereby pushing the soil around the drill rod downward, making it convenient to push the soil into the sampling groove, and further facilitating sampling;

[0019] 4) During operation, the top of the sliding plate is provided with an extrusion arc surface, and the upward movement of the sliding plate can generate a force on the first pressure-bearing inclined surface and the second pressure-bearing inclined surface, thereby facilitating the sliding plate to move back and make the card block engage with the card slot, and at the same time facilitating the moving block to move back to the inside of the accommodating slot, so as to facilitate the return of various components of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0021] In the attached picture:

[0022] Figure 1It is a schematic diagram of the structure of a soil sample sampling device for construction of the present invention;

[0023] Figure 2 It is a structural schematic diagram of the drilling sampling assembly of the present invention;

[0024] Figure 3 It is a schematic diagram of the internal structure of the drill rod of the present invention;

[0025] Figure 4 For the present invention Figure 3 The enlarged structural diagram at A in the middle;

[0026] Figure 5 It is a structural schematic diagram of a drill unit of the present invention;

[0027] Figure 6 It is a schematic diagram of the structure of the clamping fixing unit of the present invention;

[0028] Figure 7 For the present invention Figure 4 The enlarged structural diagram at B in the middle;

[0029] Figure 8 It is a schematic diagram of the moving block structure of the present invention.

[0030] In the figure: 1, mounting frame; 2, support column; 3, moving wheel; 4, longitudinal moving platform; 5, drilling sampling assembly; 501, drill rod; 502, drill unit; 5021, drilling unit; 5022, drill head; 5023, spiral blade; 5024, plate groove; 5025, bottom groove; 5026, sliding plate; 5027, bottom rod; 5028, extrusion arc surface; 5029, card slot; 503, sampling slot; 504, negative pressure chamber; 505, filter plate; 506, first connecting pipe; 507, air supply chamber; 508, second connecting pipe; 509, card fixing unit; 5091, Outer movable groove; 5092, inner movable groove; 5093, connecting groove; 5094, blocking block; 5095, first spring; 5096, first pressure inclined surface; 5097, piston block; 5098, connecting rod; 510, exhaust push unit; 5101, accommodating groove; 5102, ventilation groove; 5103, moving block; 5104, second spring; 5105, positioning groove; 5106, second pressure inclined surface; 5107, horizontal exhaust groove; 5108, longitudinal exhaust groove; 511, bottom cone; 6, rotating motor; 7, guide rod; 8, screw; 9, driving motor; 10, air pump. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0032] Depend on Figure 1-8 The present invention relates to a soil sample sampling device for construction, comprising two upper and lower mounting frames 1, a support column 2 is installed at an equal angle between the two mounting frames 1, a longitudinal moving platform 4 is arranged between the two mounting frames 1, and a drilling sampling component 5 is arranged below the longitudinal moving platform 4;

[0033] The drilling sampling assembly 5 includes a drill rod 501, a drill head unit 502 is provided at the bottom end of the drill rod 501, a sampling groove 503 is provided inside the drill rod 501, and the sampling groove 503 penetrates to the bottom end of the drill rod 501, a negative pressure chamber 504 is provided inside the drill rod 501, and the negative pressure chamber 504 is provided above the sampling groove 503, and a filter plate 505 is installed between the sampling groove 503 and the negative pressure chamber 504, an air supply chamber 507 is provided inside the drill rod 501, and a first connecting pipe 506 and a second connecting pipe 507 are respectively installed at the top of the side wall of the drill rod 501. Tube 508, a snap-on fixing unit 509 is installed on the outside of the negative pressure chamber 504, an exhaust pushing unit 510 is installed on the bottom end of the air supply chamber 507, the air supply chamber 507 is coaxially arranged on the outside of the negative pressure chamber 504, the first connecting tube 506 is connected to the negative pressure chamber 504, the second connecting tube 508 is connected to the air supply chamber 507, and an air pump 10 is installed on the top of the mounting frame 1. When connection is needed, the suction end of the air pump 10 is connected to the first connecting tube 506 through a hose, and the exhaust end of the air pump 10 is connected to the second connecting tube 508 through a hose.

[0034] The drill unit 502 includes a drilling portion 5021 disposed below the drill rod 501, the diameter of the drilling portion 5021 is larger than the diameter of the drill rod 501, a drill head 5022 is installed at the bottom end of the drilling portion 5021, a spiral blade 5023 is installed on the outer side of the drilling portion 5021, a bottom cone 511 is provided at the bottom end of the drill rod 501, and the end of the bottom cone 511 close to the sampling slot 503 is inclined downward, the top wall of the drilling portion 5021 is in close contact with the bottom wall of the bottom cone 511, and the interior of the drill rod 501 is provided with plate grooves 5024 at equal angles, and the plate grooves 5023 are provided at the bottom end of the drill rod 501. 024 is arranged at equal angles on the circumference of the sampling groove 503, a bottom groove 5025 is opened at the bottom end of the plate groove 5024, the bottom groove 5025 penetrates to the bottom of the bottom conical surface 511, a sliding plate 5026 is slidably installed inside the plate groove 5024, a bottom rod 5027 is fixedly installed at the bottom end of the sliding plate 5026, the bottom end of the bottom rod 5027 passes through the bottom groove 5025 and is fixedly connected with the drilling part 5021, an extrusion arc surface 5028 is arranged on the top of the sliding plate 5026, and a card groove 5029 is opened on the side of the sliding plate 5026 close to the sampling groove 503.

[0035] The clamping fixing unit 509 includes an outer movable groove 5091 opened on the side of the plate groove 5024 close to the negative pressure chamber 504, a clamping block 5094 is movably installed inside the outer movable groove 5091, and a first spring 5095 is symmetrically installed on the side of the clamping block 5094 close to the negative pressure chamber 504, one end of the first spring 5095 is fixedly connected to the inner wall of the end of the outer movable groove 5091, and a first pressure inclined surface 5096 is opened at the bottom of the other end of the clamping block 5094, and the bottom end of the first pressure inclined surface 5096 faces the negative pressure chamber 504. One side of the cavity 504 is inclined, and the other end of the block 5094 is inserted into the slot 5029, so that the drilling part 5021 and the drill rod 501 can be separated. During the drilling process, the block 5094 is engaged with the slot 5029, so that the bottom end of the drill rod 501 is tightly fixed to the top wall of the drilling part 5021. When it moves to the sampling position, the block 5094 is disengaged from the slot 5029, and the drill rod 501 moves upward and separates from the drilling part 5021, so that the sampling slot 503 is opened, and the soil passes through the drill rod 50 1 and the drilling part 5021 enter the sampling groove 503 to complete the sampling, so as to facilitate the sampling of the soil layer at the required depth. The inner wall of the negative pressure chamber 504 is provided with an inner movable groove 5092 at an equal angle. The inner movable groove 5092 corresponds to the outer movable groove 5091 one by one. A connecting groove 5093 is provided between the outer movable groove 5091 and the inner movable groove 5092. A piston block 5097 is installed in the inner movable groove 5092. A connecting rod 5093 is installed between the piston block 5097 and the clamping block 5094. 98. The connecting rod 5098 passes through the connecting groove 5093. After the drilling part 5021 drills to the required depth, the air pump 10 is connected to the first connecting pipe 506 and the second connecting pipe 508. The air pump 10 generates negative pressure in the negative pressure chamber 504, which generates attraction for the piston block 5097, so that the clamping block 5094 is disengaged from the clamping groove 5029. At the same time, after the drilling part 5021 is separated from the drill rod 501, the negative pressure generates suction for the soil, so that the soil enters the sampling groove 503, which is convenient for sampling.

[0036] The exhaust push unit 510 includes a receiving groove 5101 opened at the top of the plate groove 5024, one end of the receiving groove 5101 penetrates to the outside of the drill rod 501, a ventilation groove 5102 is opened at the top of the receiving groove 5101, and the top of the ventilation groove 5102 is connected to the air supply cavity 507. A moving block 5103 is movably installed inside the receiving groove 5101, and the outer wall of the moving block 5103 is tightly attached to the inside of the receiving groove 5101. A second spring 5104 is symmetrically installed on one side of the moving block 5103 close to the negative pressure cavity 504, and one end of the second spring 5104 is attached to the end of the receiving groove 5101. The movable block 5103 is fixedly connected to the wall, the movable block 5103 is located on the side of the ventilation groove 5102 away from the negative pressure chamber 504, a transverse exhaust groove 5107 is provided inside the movable block 5103, one end of the transverse exhaust groove 5107 penetrates to the side of the movable block 5103 close to the negative pressure chamber 504, longitudinal exhaust grooves 5108 are equidistantly provided inside the movable block 5103, the top of the longitudinal exhaust groove 5108 is connected to the bottom of one end of the transverse exhaust groove 5107 away from the negative pressure chamber 504, the bottom end of the longitudinal exhaust groove 5108 penetrates to the bottom of the movable block 5103, and a positioning groove 5107 is provided at the bottom of the movable block 5103. 05, a second pressure inclined surface 5106 is provided on one side of the positioning groove 5105 close to the negative pressure chamber 504, and an extrusion arc surface 5028 is provided on the top of the sliding plate 5026. The upward movement of the sliding plate 5026 can generate a force on the first pressure inclined surface 5096 and the second pressure inclined surface 5106, thereby facilitating the sliding plate 5026 to move back and make the block 5094 engage with the slot 5029, and at the same time facilitate the moving block 5103 to move back to the inside of the receiving groove 5101, so as to facilitate the return of various components of the equipment. The positioning groove 5105 is located below the horizontal exhaust groove 5107 and close to the longitudinal exhaust groove 5108. On the side near the negative pressure chamber 504, the top end of the sliding plate 5026 is inserted into the interior of the positioning groove 5105. When the drilling part 5021 is separated from the drill rod 501, the sliding plate 5026 moves downward inside the plate groove 5024 and disengages from the positioning groove 5105. The moving block 5103 moves outward under the elastic force of the second spring 5104. After the air pump 10 is turned on, it can drive the air in the negative pressure chamber 504 to spray downward toward the drill rod 501 through the longitudinal exhaust groove 5108, thereby pushing the soil around the drill rod 501 downward, making it convenient to push the soil into the sampling groove 503, further facilitating sampling.

[0037] The top end of the drill rod 501 is connected to the output end of the rotating motor 6, the rotating motor 6 is fixedly installed on the top end of the longitudinal moving platform 4, a guide rod 7 is installed between the two mounting frames 1, the longitudinal moving platform 4 is slidably connected to the guide rod 7, a screw rod 8 is rotatably installed between the two mounting frames 1, the screw rod 8 is threadedly connected to the longitudinal moving platform 4, the top end of the screw rod 8 is fixedly connected to the output shaft of the driving motor 9, the driving motor 9 is fixedly installed on the top end of the upper mounting frame 1, and moving wheels 3 are installed at the four corners of the bottom end of the lower mounting frame 1.

[0038] Working principle: When working, first select the drilling position, move the equipment to the drilling position through the moving wheel 3, and then turn on the rotating motor 6 and the driving motor 9. When the rotating motor 6 is turned on, it drives the drill rod 501 and the drilling part 5021 to rotate. When the driving motor 9 is turned on, it drives the screw 8 to rotate, and the screw 8 is threadedly connected to the longitudinal moving platform 4, thereby driving the drill rod 501 to move downward, so that the drill rod 501 continues to drill downward;

[0039] When the drill rod 501 moves downward until the bottom end of the drill rod 501 moves to the depth required for sampling, the rotating motor 6 and the driving motor 9 are powered off and stopped, and then the suction end of the air pump 10 is connected to the first connecting pipe 506 through a hose, and the exhaust end of the air pump 10 is connected to the second connecting pipe 508 through a hose, and the air pump 10 is turned on. At this time, since the bottom end of the bottom cone 511 is in close contact with the top wall of the drilling part 5021, negative pressure is generated inside the negative pressure chamber 504. Under the action of the negative pressure, suction is generated on the piston block 5097, thereby driving the piston block 5097 to move toward one side of the negative pressure chamber 504, thereby driving the clamping block 5094 to disengage from the clamping groove 5029 and completely enter the outer movable groove 5091.

[0040] Then, the driving motor 9 is turned on, and the driving motor 9 drives the drill rod 501 to move upward for a distance. Since the spiral blade 5023 is arranged on the outside of the drilling part 5021, the drilling part 5021 cannot move upward with the drill rod 501 due to the pressure of the soil, so that the drill rod 501 and the drilling part 5021 are separated. At this time, under the negative pressure generated by the air pump 10, the soil on the outside of the drill rod 501 is driven to pass between the bottom cone surface 511 and the drilling part 5021 and enter the sampling slot 503. Since a filter plate 505 is arranged between the sampling slot 503 and the negative pressure chamber 504, the soil will not enter the negative pressure chamber 504.

[0041] When the drill rod 501 moves upward, the sliding plate 5026 moves downward relative to the drill rod 501 in the plate groove 5024, so that the top end of the sliding plate 5026 leaves the interior of the positioning groove 5105. In the original state, the second spring 5104 is in a compressed state. At this time, the moving block 5103 moves outward under the elastic force of the second spring 5104, so that the end of the moving block 5103 moves to the outside of the longitudinal exhaust groove 5108, and the accommodating groove 5101 is connected with the air supply cavity 507 through the ventilation groove 5102. When the air pump 10 is turned on, the air in the negative pressure cavity 504 is driven to spray downward from the longitudinal exhaust groove 5108 to the vicinity of the drill rod 501, generating a downward driving force on the surrounding soil, making it convenient for the soil to enter the sampling groove 503 for convenient sampling.

[0042] After the sampling is completed, the air pump 10 is turned off, and the drill rod 501 is driven downward by the driving motor 9, so that the drill rod 501 moves toward the drilling part 5021. Since the bottom end of the drill rod 501 is provided with a bottom cone 511, the bottom cone 511 can push away the soil between the bottom cone 511 and the drilling part 5021, so that the bottom end of the bottom cone 511 contacts the top wall of the drilling part 5021. At this time, the sliding plate 5026 moves upward along the plate groove 5024 to its original position. After the air pump 10 is turned off, the air pressure returns to normal. At this time, the block 5094 moves back under the elastic force of the first spring 5095. When the plate 5026 moves upward, the extrusion arc surface 5028 generates pressure on the first pressure inclined surface 5096, pushing the block 5094 into the outer movable groove 5091, so that the sliding plate 5026 can move upward smoothly. After moving to the original position, the block 5094 moves back and is inserted into the groove 5029, thereby re-fixing the drilling part 5021 to prevent the sample from being discharged. At the same time, the extrusion arc surface 5028 on the top of the sliding plate 5026 acts on the second pressure inclined surface 5106, pushing the moving block 5103 completely into the receiving groove 5101, and completing the return movement of each component;

[0043] Then, the drill rod 501 is moved upward to above the ground by driving the motor 9, and the drilling portion 5021 and the drill rod 501 are separated to obtain a sample.

[0044] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A soil sample sampling device for construction, comprising two upper and lower mounting frames (1), characterized in that: A support column (2) is installed at an equal angle between the two mounting frames (1), a longitudinal moving platform (4) is arranged between the two mounting frames (1), and a drilling sampling assembly (5) is arranged below the longitudinal moving platform (4); The drilling sampling assembly (5) comprises a drill rod (501), a drill bit unit (502) is arranged at the bottom end of the drill rod (501), a sampling groove (503) is arranged inside the drill rod (501), the sampling groove (503) penetrates to the bottom end of the drill rod (501), a negative pressure chamber (504) is arranged inside the drill rod (501), the negative pressure chamber (504) is arranged above the sampling groove (503), a filter plate (505) is installed between the sampling groove (503) and the negative pressure chamber (504), an air supply chamber (507) is arranged inside the drill rod (501), a first connecting pipe (506) and a second connecting pipe (508) are respectively installed at the top end of the side wall of the drill rod (501), a clamping fixing unit (509) is installed on the outside of the negative pressure chamber (504), and an exhaust pushing unit (510) is installed at the bottom end of the air supply chamber (507); The drill head unit (502) comprises a drilling part (5021) arranged below the drill rod (501), the diameter of the drilling part (5021) is larger than the diameter of the drill rod (501), a drill head (5022) is installed at the bottom end of the drilling part (5021), a spiral blade (5023) is installed on the outside of the drilling part (5021), a bottom conical surface (511) is arranged at the bottom end of the drill rod (501), one end of the bottom conical surface (511) close to the sampling groove (503) is arranged to be inclined downward, the top wall of the drilling part (5021) is in close contact with the bottom wall of the bottom conical surface (511), and plate grooves (5024) are provided at equal angles inside the drill rod (501), and the plate grooves (5024) are provided on the outside of the drill rod (501). 024) are arranged at equal angles on the circumference of the sampling groove (503), a bottom groove (5025) is provided at the bottom end of the plate groove (5024), the bottom groove (5025) penetrates to the bottom of the bottom conical surface (511), a sliding plate (5026) is slidably installed inside the plate groove (5024), a bottom rod (5027) is fixedly installed at the bottom end of the sliding plate (5026), the bottom end of the bottom rod (5027) passes through the bottom groove (5025) and is fixedly connected to the drilling part (5021), an extrusion arc surface (5028) is provided at the top end of the sliding plate (5026), and a clamping groove (5029) is provided on the side of the sliding plate (5026) close to the sampling groove (503).

2. A soil sample sampling device for construction according to claim 1, characterized in that: The air supply chamber (507) is coaxially arranged on the outside of the negative pressure chamber (504); the first connecting tube (506) is connected to the negative pressure chamber (504); the second connecting tube (508) is connected to the air supply chamber (507); an air pump (10) is installed on the top of the mounting frame (1); when connection is required, the air suction end of the air pump (10) is connected to the first connecting tube (506) via a hose, and the air discharge end of the air pump (10) is connected to the second connecting tube (508) via a hose.

3. A construction soil sample sampling device according to claim 1, characterized in that: The clamping and fixing unit (509) comprises an outer movable groove (5091) provided on a side of the plate groove (5024) close to the negative pressure chamber (504); a clamping block (5094) is movably installed inside the outer movable groove (5091); a first spring (5095) is symmetrically installed on a side of the clamping block (5094) close to the negative pressure chamber (504); one end of the first spring (5095) is fixedly connected to the inner wall of the end of the outer movable groove (5091); a first pressure-bearing inclined surface (5096) is provided at the bottom of the other end of the clamping block (5094); the bottom end of the first pressure-bearing inclined surface (5096) is inclined toward the side of the negative pressure chamber (504); and the other end of the clamping block (5094) is clamped into the inside of the clamping groove (5029).

4. A soil sample sampling device for construction according to claim 3, characterized in that: An inner movable groove (5092) is provided at an equal angle on the inner wall of the negative pressure chamber (504), the inner movable groove (5092) corresponds to the outer movable groove (5091) one by one, a connecting groove (5093) is provided between the outer movable groove (5091) and the inner movable groove (5092), a piston block (5097) is movably installed inside the inner movable groove (5092), a connecting rod (5098) is installed between the piston block (5097) and the clamping block (5094), and the connecting rod (5098) passes through the connecting groove (5093).

5. The soil sample sampling device for construction according to claim 1, characterized in that: The exhaust pushing unit (510) comprises a receiving groove (5101) provided at the top of the plate groove (5024), one end of the receiving groove (5101) passes through the outside of the drill rod (501), a ventilation groove (5102) is provided at the top of the receiving groove (5101), the top of the ventilation groove (5102) is connected to the air supply cavity (507), a moving block (5103) is movably installed inside the receiving groove (5101), the outer wall of the moving block (5103) is tightly attached to the inside of the receiving groove (5101), a second spring (5104) is symmetrically installed on one side of the moving block (5103) close to the negative pressure cavity (504), and one end of the second spring (5104) is fixedly connected to the inner wall of the end of the receiving groove (5101).

6. A construction soil sample sampling device according to claim 5, characterized in that: The moving block (5103) is located on a side of the ventilation groove (5102) away from the negative pressure chamber (504); a transverse exhaust groove (5107) is provided inside the moving block (5103); one end of the transverse exhaust groove (5107) extends through a side of the moving block (5103) close to the negative pressure chamber (504); longitudinal exhaust grooves (5108) are provided inside the moving block (5103) at equal intervals; the top of the longitudinal exhaust groove (5108) is connected to the bottom of one end of the transverse exhaust groove (5107) away from the negative pressure chamber (504); The bottom end of the longitudinal exhaust groove (5108) passes through to the bottom of the moving block (5103), a positioning groove (5105) is provided at the bottom of the moving block (5103), a second pressure-bearing inclined surface (5106) is provided on the side of the positioning groove (5105) close to the negative pressure chamber (504), the positioning groove (5105) is located below the transverse exhaust groove (5107) and on the side of the longitudinal exhaust groove (5108) close to the negative pressure chamber (504), and the top end of the sliding plate (5026) is inserted into the interior of the positioning groove (5105).

7. The soil sample sampling device for construction according to claim 1, characterized in that: The top end of the drill rod (501) is connected to the output end of the rotating motor (6), the rotating motor (6) is fixedly mounted on the top end of the longitudinal moving platform (4), a guide rod (7) is mounted between the two mounting frames (1), the longitudinal moving platform (4) and the guide rod (7) are slidably connected, a screw rod (8) is rotatably mounted between the two mounting frames (1), the screw rod (8) is threadedly connected to the longitudinal moving platform (4), the top end of the screw rod (8) is fixedly connected to the output shaft of the driving motor (9), the driving motor (9) is fixedly mounted on the top end of the upper mounting frame (1), and moving wheels (3) are mounted at the four corners of the bottom end of the lower mounting frame (1).

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