CN113324792A

CN113324792A - Sampling device for rock and soil detection

Info

Publication number: CN113324792A
Application number: CN202110600373.2A
Authority: CN
Inventors: 李彦龙
Original assignee: Xuchang University
Current assignee: Xuchang University
Priority date: 2019-05-22
Filing date: 2019-05-22
Publication date: 2021-08-31
Also published as: CN110082148A; CN110082148B

Abstract

The invention provides a sampling device for geotechnical detection, which solves the problem that a sample is easy to dope a soil sample at a non-set position in the traditional exploration engineering. When soil samples are sampled, fixed-point sampling can be carried out on the set positions, interference of soil samples at other positions is avoided, and the soil samples and the structures at the set positions can be more clearly and definitely indicated; when taking a sample, its control box is started and all relies on mechanical structure to accomplish, and its trigger and control process need not consider the drilling internal environment, in time to the drilling that has groundwater or mud, still can realize the sample to the position of formulating, and is stronger, maintain easily to abominable civil exploration engineering adaptability.

Description

Sampling device for rock and soil detection

The patent application is divisional application, the application number of a parent application is 201910427817X, and the application date of the parent application is 2019, 05 and 22.

Technical Field

The invention relates to the acquisition of soil samples in civil engineering, in particular to a sampling device for geotechnical detection.

Background

The geological prospecting soil sampling is an important step of geotechnical engineering, and the process is that a drilling mechanism drills a hole in a stratum, then samples soil samples which are close to an actual original structure along the depth of the hole, and judges the geological condition of a target area by directly observing the natural state of a rock-soil layer and the geological structure of each stratum.

The traditional soil sampling method is that a sample is carried through a cavity of a drill bit part, for example, a cylindrical cavity is formed in the center of a drill bit, soil enters the cavity and is compressed through external pressure in the drilling process, a drill floor is pulled out, and then the sample in the cavity is taken out; in the other method, the drilled soil is conveyed to the outside of the cavity through the drilling mechanism with the spiral conveying blade, the obtained soil sample is loose, the phenomenon of doping of the soil sample in a non-target area can be caused in the conveying process, and the phenomenon of interference on the type judgment of the soil sample still exists.

Disclosure of Invention

The invention provides a sampling device for geotechnical detection, which solves the problem that a sample is easy to dope a soil sample at a non-set position in the traditional exploration engineering.

The technical scheme is that the device comprises a drill bit part, wherein the drill bit part is configured to cut soil to realize feeding in the depth direction; the drilling device is characterized by further comprising an acquisition part detachably and fixedly connected with the drill bit part, wherein the acquisition part is provided with an outer peripheral wall opposite to the inner wall of the drilled hole, the outer peripheral wall is configured to comprise at least one part of scraping plates capable of expanding outwards or contracting inwards relative to the outer peripheral wall, and soil inlets are formed in the outer peripheral wall when the scraping plates expand outwards;

the storage box is configured to comprise a storage cavity which can be in communication fit with the soil inlet, and a soil sample entering from the soil inlet enters the storage box cavity for storage;

the control mechanism is configured to be a structure comprising a trigger end, and when sampling is needed, the trigger end descends and drives the scraper to expand outwards so as to open the soil inlet; when sampling is not needed, the trigger end ascends and prompts the scraper to recover the original position, and then the soil inlet is closed;

the transmission mechanism is configured to drive the storage box to be matched with the soil inlet to form a structure that the soil sample enters the cavity of the storage box from the soil inlet when the soil inlet is opened; when the soil inlet is closed, the transmission mechanism drives the storage box to restore the original position.

In the above or some embodiments, the obtaining part includes a cylinder section with one closed end and the other open end, the outer circumferential wall is located at the position of the cylinder section, the cavity is located in the cylindrical structure and located in the cylinder section, the storage box is coaxially sleeved in the cavity of the cylinder section, and the storage box and the cylinder section can rotate relatively.

In the above or some embodiments, the outer circumferential wall is provided with notches symmetrically arranged about the axis of the barrel section, the scraper is fixedly installed in the notches through a rotating shaft, one side of the scraper is rotatably connected with the barrel section through the rotating shaft, the other side of the scraper is a free end, and the outer surface of the scraper is flush with the outer circumferential wall; the storage box is of a cylindrical structure provided with a closed end and an open end, and the open end is in contact fit with the bottom of the cavity to form a structure that the storage box can rotate around the axis of the storage box; the rotating shaft is matched with a half gear in a rotation stopping way, a central gear meshed with the half gear is arranged in the center of the corresponding closed end, and when the scraper drives the rotating shaft to rotate, the half gear rotates along with the rotating shaft and stirs the central gear to rotate and drives the storage box to rotate; each pivot upper end still extends to the sun gear direction and is equipped with a control lever, the top of control lever is equipped with the touching pole that has the conical surface, touching pole and trigger end structure as an organic whole, and when the touching pole was down, conical surface extrusion control lever rotation realized the rotary motion of half-gear.

In the above or some embodiments, the cavity further includes a control plate and a fixing plate disposed in parallel and at an interval, the control plate is located below the control rod and is fixedly engaged with the inner wall of the cavity, a protruding thimble is disposed at a center of a lower surface of the control plate, the thimble is configured to press a center of the central gear at a constant pressure, and a tapered hole is disposed on an upper surface of the thimble and is engaged with the tapered surface; the fixed plate is located the top of control panel, and its center department is equipped with the slip hole with touching pole sliding fit, be equipped with the elastic component between trigger end and the fixed plate upper surface, form and push down behind the trigger end, the structure that the touch pole can resume the normal position under the elastic component elastic force effect.

In the above or some embodiments, the storage box is provided with a long groove in an elongated structure, the long groove is matched with the soil inlet, the long groove is communicated with the cavity of the storage box, and when the trigger end descends, the control mechanism drives the storage box to rotate while the long groove is opposite to the soil inlet, so as to form a structure for the sample soil to enter the storage box.

In the above-mentioned or some embodiments, barrel section below is equipped with the connector, the outer wall department of connector is equipped with the keyway of equally dividing the distribution for a plurality of recessed recesses, keyway or outer wall department are equipped with the bolt hole of indent, drill bit portion is equipped with the connecting hole that corresponds with the connector, the connecting hole pass through the spline, countersunk head bolt with connector fixed connection.

The soil sampling device has the advantages that when soil samples are sampled, fixed-point sampling can be carried out on the set position, the interference of soil samples at other positions is avoided, and the soil samples and the structures at the set position can be more clearly and definitely indicated; when taking a sample, its control box is started and all relies on mechanical structure to accomplish, and its trigger and control process need not consider the drilling internal environment, in time to the drilling that has groundwater or mud, still can realize the sample to the position of formulating, and is stronger, maintain easily to abominable civil exploration engineering adaptability.

Drawings

Fig. 1 is an exploded view of the components of the present invention.

Fig. 2 is a perspective view of the present invention.

Fig. 3 is a front view of the present invention.

Fig. 4 is a right side view of fig. 3.

Fig. 5 is a perspective view of the acquisition part of the present invention.

Fig. 6 is a front view of the acquisition part of the present invention.

Fig. 7 is a left side view of fig. 6.

Detailed Description

In order to more clearly and fully illustrate the core concepts of the present invention, the invention will be further described and illustrated with reference to specific embodiments. It should be noted that the following specific embodiments are intended to illustrate the inventive concept and are not intended to limit the implementation of the present invention, so the implementation of the present invention includes but is not limited to what is described in the present application, and the replacement and avoidance by those skilled in the art according to the inventive concept should be considered as falling within the scope of the present invention which is claimed or should not be granted.

In one embodiment, an externally controlled spreading-open or restoring scraper 202 is disposed at the capturing portion 200 connected to the drilling head portion 100, when spreading is performed, two or more scrapers 202 located on the outer peripheral wall 201 of the capturing portion 200 are outwardly opened, the free ends of the scrapers 202 form a structure for cutting and scraping soil samples on the inner wall of the drilled hole, as the drilling head portion 100 rotates, the scrapers 202 continuously cut and strip the inner wall of the drilled hole, and newly scraped pattern samples are mutually accumulated until the storage box 300 is fully accumulated.

In the above or some embodiments, the drill portion 100 is provided with blade portions for cutting soil, and chip removal grooves for removing chips towards the inner wall of the drill hole are arranged between the blade portions, and when drilling is performed, the drill portion 100 is used as a component directly acting on the bottom of the drill hole to cut soil and continuously feed the soil until reaching a specified position. Barrel section 203 below is equipped with connector 206, and the outer wall department of connector 206 is equipped with the keyway 207 of evenly dividing the distribution for a plurality of recessed equally, and keyway 207 or outer wall department are equipped with the bolt hole 208 of indent, drill bit portion 100 is equipped with the connecting hole that corresponds with connector 206, the connecting hole pass through the spline, countersunk head bolt with connector 206 fixed connection. The traditional drill bit parts 100 are mostly connected by adopting simple threads or bolts, when the drill bit cuts the drill bit completely, the drill bit needs to bear larger axial force and tangential force, for the drill bit parts 100 which are simply connected by the bolts, the bolt columns bear the shearing force generated by the tangential force, in the engineering field, due to the lack of effective detection means, the damage of the bolt columns is usually discovered only after the shearing occurs; the drill bit 100 connected by the pure bolt is often contacted with slurry, so that the bolt is easy to rust, and the later replacement and maintenance of the drill bit are difficult. In this patent application, the drill bit portion 100 adopts spline and bolt to realize the fixed of drill bit portion 100 simultaneously, and in the in-service use, the shearing action that its tangential force produced disperses by the spline bolt that the circumference distributes, makes its shearing force dispersed everywhere, reduces the effect of its shearing to in can bear bigger load, life is greatly increased also.

In the above or some embodiments, in order to realize the structure of the obtaining part 200, the obtaining part 200 includes a cylinder body 203 with one closed end and the other open end, the cylinder body 203 is a reducing hollow cylinder structure, a scraper 202 is installed at the smaller diameter position, a cylindrical cavity 204 in the cylinder body is used for installing a storage box 300, meanwhile, the cylinder body 203 is further provided with an outer peripheral wall 201, the storage box 300 is coaxially sleeved in the cavity 204 of the cylinder body 203, and the storage box 300 and the cylinder body 203 can rotate relatively. The outer peripheral wall 201 is provided with notches 205 symmetrically arranged about the axis of the cylinder body 203, the notches 205 include but are not limited to two, the scraping plates 202 are fixedly installed in the notches 205 through a rotating shaft 402, one side of each scraping plate 202 is rotatably connected with the cylinder body 203 through the rotating shaft 402, the other side of each scraping plate 202 is a free end, the rotating shaft 402 comprises a shaft head which is positioned below the scraping plate 202 and is rotatably matched with the frame of the notch 205, the scraping plate further comprises a transition part which is partially rotatably matched with the outer peripheral wall 201, a groove 209 matched with the transition part is arranged on the inner wall of the cylinder body 203 at the position with the larger diameter, one end of each groove 209 is of a closed structure, the other end of each groove 209 is used for assembling when the rotating shaft 402 is installed, and the transition part of the rotating shaft 402 is completely embedded in the groove 209 when the barrel is used; the outer surface of the scraper 202 is flush with the outer peripheral wall 201 in a normal state.

In the above or some embodiments, the storage case 300 is used to store soil samples and remove the samples from the boreholes.

Storage case 300 is a cylindrical hollow structure with a closed end 302 and an open end 303, the open end 303 is in contact fit with the bottom of the cavity 204 to form a structure that storage case 300 can rotate around its axis, for better rotation fit, a ball may be disposed between storage case 300 and cavity 204 of barrel section 203, including but not limited to a ball that can freely roll around the edge of open end 303 of storage case 300, long groove 304303 is disposed on storage case 300 and has an elongated structure that fits into the soil inlet, long groove 304303 is in communication with the cavity of storage case 300, when trigger end 401 descends, control mechanism 400 drives storage case 300 to rotate while long groove 304303 faces the soil inlet, forming a structure that sample soil enters storage case 300. A central gear 502 meshed with the half gear 501 is arranged at the center of the closed end 302 of the storage box 300, the rotating shaft 402 is fixedly matched with the half gear 501, when the scraper 202 drives the rotating shaft 402 to rotate, the half gear 501 rotates along with the rotating shaft and drives the central gear 502 to rotate, and the storage box 300 is driven to rotate around the axis of the storage box 300 relative to the cylinder body section 203; the upper end of each rotating shaft 402 is further provided with a control rod 403 extending towards the central gear 502, the extension line of the axis of the control rod 403 deviates from the axis of the central gear 502, a touch rod 404 with a conical surface 405 is arranged above the control rod 403, the axis of the touch rod 404 is overlapped with the axis of the central gear 502, the touch rod 404 and the trigger end 401 are of an integrated structure, and when the touch rod 404 moves downwards, the conical surface 405 extrudes the control rod 403 to rotate to realize the rotating motion of the half gear 501. For better use, when the tapered surface 405 on the touching rod 404 disengages from the pressing lever 403, the tension spring between the two levers 403 acts to urge the two levers 403 to return to the original state.

In the above or some embodiments, the cylinder section 203 has a larger diameter, the cavity 204 further includes a control board 406 and a fixing board 407 arranged in parallel and at an interval, the control board 406 is located below the control rod 403 and is fixedly engaged with the inner wall of the cavity 204, a protruding pin 408 is arranged at the center of the lower surface of the control board 406, the pin 408 is configured to press the center of the central gear 502, the pin 408 presses the central gear 502 to fix the position of the storage box 300, and a circular hole corresponding to the pin 408 may be arranged at the center of the corresponding central gear 502 to facilitate the structure of the storage box 300 rotating relative to the cylinder section 203; the upper surface of thimble 408 is equipped with the bell mouth 409 of the relative complex with conical surface 405, and the bell mouth 409 is used for conical surface 405 to remove the cooperation rather than when descending, and fixed plate 407 is located the top of control panel 406, and its center department is equipped with the sliding hole with touch pole 404 sliding fit, be equipped with elastic component 410 between trigger end 401 and the fixed plate 407 upper surface, form and push down behind the trigger end 401, touch pole 404 can resume the structure of normal position under the elastic force effect of elastic component 410.

In specific use, the storage box 300 is firstly loaded into the cavity 204 from the open end 303 of the cylinder body section 203, then the transition part of the rotating shaft 402 is loaded, in specific practice, the transition part, the control rod 403 and the half gear 501 are integrated components, when the transition part is installed, the central gear 502 and the half gear 501 are assembled to be completely meshed, then the control board 406 is placed into the cavity 204 in parallel, a limiting shaft shoulder part is arranged on the inner wall of the cavity 204 of the cylinder body section 203 and forms with the edge of the control board 406, in order to better realize specific position between the fixing plate 407 and the control board 406 and realize fixing of the fixing plate 407, sleeves 210 with different heights can be arranged between the control board 406 and the fixing plate 407, the sleeves are in sliding fit with the inner wall of the cavity 204, and the fixing plate 407 is installed after the sleeves are loaded. When the device is used, the acquisition part 200 is fixed at the end part of a hollow drill rod through bolts or other fixing modes, the acquisition part 200 moves along with the drill rod, meanwhile, the trigger end 401 is positioned in the hollow drill rod, when the drill head part 100 reaches a set position and is stable, the trigger end 401 is extruded by a second eating mode to control the scraper blade 202 to be opened at the peripheral wall 201 to form a soil inlet, a soil sample at the set position is continuously stripped by utilizing the rotation action of the drill rod, and the soil sample enters the cavity of the storage box 300 from the soil inlet to be stored; when it is desired to remove the drill rod from the borehole, the access portion 200 is removed from the drill rod, and the storage case 300 is removed, such that the storage case 300 can be used to assist in removing the sample soil via the elongated slot 304303.

Claims

1. Sampling device for geotechnical detection, comprising a drill bit part (100), wherein the drill bit part (100) is configured to cut soil to realize feeding in depth direction; the device is characterized by further comprising an acquisition part (200) detachably and fixedly connected with the drill head part (100), wherein the acquisition part (200) is provided with a peripheral wall (201) opposite to the inner wall of the drill hole, the peripheral wall (201) is configured to comprise a scraper (202) at least part of which can expand outwards or contract inwards relative to the peripheral wall (201), and a soil inlet is formed at the peripheral wall (201) when the scraper (202) expands outwards; the storage box (300) is positioned in the cavity (204) inside the obtaining part (200) and can be matched with the obtaining part (200) in a relatively rotating mode, the storage box (300) is configured to comprise a storage cavity (301) which can be matched with the soil inlet in a communicating mode, and a soil sample entering from the soil inlet enters the cavity of the storage box (300) to be stored; the device also comprises a control mechanism (400) for controlling the scraper (202) to expand or contract, wherein the control mechanism (400) is configured into a structure comprising a trigger end (401), and when sampling is needed, the trigger end (401) descends and drives the scraper (202) to expand outwards so as to open the soil inlet; when sampling is not needed, the trigger end (401) ascends and prompts the scraper (202) to recover to the original position, and then the soil inlet is closed; the soil sample storage device further comprises a transmission mechanism (500) between the scraper blade (202) and the storage box (300), wherein the transmission mechanism (500) is configured to drive the storage box (300) to be matched with the soil inlet to form a structure that the soil sample enters the cavity of the storage box (300) from the soil inlet when the soil inlet is opened; when the soil inlet is closed, the transmission mechanism (500) drives the storage box (300) to restore the original position.

2. The sampling device for geotechnical detection according to claim 1, characterized in that said capturing part (200) comprises a cylinder section (203) with one end closed and the other end open, said outer peripheral wall (201) is located at the position of the cylinder section (203), said cavity (204) is located in a cylindrical structure and located in the cylinder section (203), said storage box (300) is coaxially sleeved in the cavity (204) of the cylinder section (203), and said storage box (300) and the cylinder section (203) can rotate relatively.

3. The sampling device for geotechnical detection according to claim 2, characterized in that the outer peripheral wall (201) is provided with notches (205) symmetrically arranged about the axis of the cylinder section (203), the scraper (202) is fixedly installed in the notches (205) through a rotating shaft (402), one side of the scraper (202) is rotatably connected with the cylinder section (203) through the rotating shaft (402), the other side of the scraper (202) is a free end, and the outer surface of the scraper (202) is flush with the outer peripheral wall (201); the storage box (300) is of a cylindrical structure provided with a closed end (302) and an open end (303), the open end (303) is in contact fit with the bottom of the cavity (204), and a structure that the storage box (300) can rotate around the axis of the storage box is formed; the rotating shaft (402) is matched with a half gear (501) in a rotation stopping manner, a central gear (502) meshed with the half gear (501) is arranged in the center of the corresponding closed end, and when the scraper (202) drives the rotating shaft (402) to rotate, the half gear (501) rotates along with the rotating shaft and stirs the central gear (502) to rotate and drives the storage box (300) to rotate; each pivot (402) upper end still extends to sun gear (502) direction and is equipped with a control lever (403), the top of control lever (403) is equipped with a touching pole (404) that has conical surface (405), touching pole (404) and trigger end (401) structure as an organic whole, and when touching pole (404) down, conical surface (405) extrusion control lever (403) are rotatory to be realized the rotary motion of half-gear (501).

4. The sampling device for geotechnical detection according to claim 3, characterized in that the cavity (204) further comprises a control plate (406) and a fixing plate (407) which are arranged in parallel and spaced, the control plate (406) is located below the control rod (403) and is fixedly matched with the inner wall of the cavity (204), a protruding thimble (408) is arranged at the center of the lower surface of the control plate (406), the thimble (408) is configured to be fixed-pressure at the center of the central gear (502), and a tapered hole (409) which is oppositely matched with the tapered surface (405) is arranged on the upper surface of the thimble (408); fixed plate (407) are located the top of control panel (406), and its center department is equipped with the sliding hole with touching pole (404) sliding fit, be equipped with elastic component (410) between trigger end (401) and fixed plate (407) upper surface, form and push down trigger end (401) back, touch pole (404) can be at the structure of elastic component (410) elastic force effect recovery normal position down.

5. The sampling device for geotechnical detection according to claim 3 or 4, characterized in that the storage box (300) is provided with a long groove (304) with a long strip structure matched with the soil inlet, the long groove (304) is communicated with the cavity of the storage box (300), when the trigger end (401) descends, the control mechanism (400) drives the storage box (300) to rotate, and the long groove (304) is opposite to the soil inlet, so that the sample soil enters the storage box (300) in a structure.

6. The sampling device for geotechnical detection according to claim 5, characterized in that cylinder section (203) below is equipped with connector (206), the outer wall department of connector (206) is equipped with recessed keyway (207) of a plurality of evenly distributed, keyway (207) or outer wall department are equipped with the bolt hole (208) of indent, drill bit portion (100) is equipped with the connecting hole that corresponds with connector (206), the connecting hole pass through the spline, countersunk head bolt with connector (206) fixed connection.