CN112378703B

CN112378703B - Geodetic survey is with geotome

Info

Publication number: CN112378703B
Application number: CN202011351042.1A
Authority: CN
Inventors: 琚兵; 常结刚; 潘武根
Original assignee: Anqing Panshi Geotechnical Co ltd
Current assignee: Anqing Panshi Geotechnical Co ltd
Priority date: 2020-11-27
Filing date: 2020-11-27
Publication date: 2022-11-25
Anticipated expiration: 2040-11-27
Also published as: CN112378703A

Abstract

The application relates to a geodetic surveying device, which relates to the field of surveying equipment and comprises a fixed cylinder and a geodetic surveying cylinder arranged below the fixed cylinder, wherein a plugging hole is formed above the fixed cylinder; a connecting column is fixed at the upper end of the fixed cylinder; one end of the connecting column, which is far away from the fixed cylinder, is provided with a threaded hole; a threaded rod is connected with the inner thread of the threaded hole; one end of the threaded rod, which is close to the fixed cylinder, is provided with a plug which is abutted against the plugging hole; one end of the threaded rod, which is far away from the fixed cylinder, is provided with an adjusting column; the soil sampling cylinder comprises an outer cylinder and an inner cylinder, wherein the outer cylinder is detachably connected with the lower portion of the fixed cylinder, and the inner cylinder is inserted into the outer cylinder. This application has the effect that improves the efficiency of fetching earth.

Description

Geodetic survey is with geotome

Technical Field

The application relates to the field of survey equipment, in particular to geodetic survey.

Background

At present, the soil sampler is used for lifting undisturbed soil of lower layer test soil as a sample to know the property of the lower layer test soil, in order to enable more basic layer properties to be known, and in engineering geological exploration and exploration work, in order to obtain physical and mechanical property indexes of the foundation soil, the original sample soil is sometimes even needed to be sampled at a deeper position, the soil sampler is called as a soil sampler, the soil sampler generally comprises a handle, a fixed rod, a soil sampling drill bit and the like, when the soil sampler is used, the soil sampler is drilled into the soil to a required depth and then is pulled out, and the soil in the drill bit can be used as a test sample.

At present, chinese patent with publication number CN211013613U discloses a geotome for geological survey, including the geotome, the upper surface threaded connection of geotome has the backup pad, the last fixed surface of backup pad is connected with the outer pole, the surface swing joint of outer pole has adjusting bolt, the upper surface swing joint of outer pole has interior pole, the upper surface threaded connection of interior pole has the supporting shoe, the upper surface fixed connection of supporting shoe has the bracing piece, the upper surface fixed connection of bracing piece has the handspike.

In view of the above-mentioned related art, the inventor believes that when the soil sampler collects and lifts up soil, the soil is liable to drop from the soil sampler, and the soil sampling efficiency is not high.

Disclosure of Invention

In order to solve the problem that soil drops easily from the geotome when lifting the geotome, this application provides a geotome for geological survey.

The application provides a geodetic survey uses geodetic survey adopts following technical scheme:

a geodetic surveying geodetic apparatus comprises a fixed cylinder and a geodetic surveying cylinder arranged below the fixed cylinder, wherein a plugging hole is formed above the fixed cylinder; a connecting column is fixed at the upper end of the fixed cylinder; one end of the connecting column, which is far away from the fixed cylinder, is provided with a threaded hole; a threaded rod is connected with the inner thread of the threaded hole; one end of the threaded rod, which is close to the fixed cylinder, is provided with a plug which is abutted against the plugging hole; one end of the threaded rod, which is far away from the fixed cylinder, is provided with an adjusting column; the soil sampling cylinder comprises an outer cylinder and an inner cylinder, wherein the outer cylinder is detachably connected with the lower portion of the fixed cylinder, and the inner cylinder is inserted into the outer cylinder.

Through adopting the above-mentioned technical scheme, when the operation of fetching earth, through knocking the geotome body, make the inner tube fill with the soil horizon, the regulation post is screwed up to the rethread, make the regulation post drive the plug and peg graft in the shutoff hole of solid fixed cylinder top, make the shutoff hole plugged up, form one section cavity between solid fixed cylinder inner chamber and the sample soil, when last geotome of fetching earth, the soil of inner tube can be because one section distance of gravity slip of self, make the cavity volume increase between solid fixed cylinder inner chamber and the sample soil, under the unchangeable condition of sample soil, make the interior negative pressure that forms of cavity, there is an ascending suction to sample soil, thereby can improve when the sampler lifts, the stability of sample soil in the geotome, sample soil is difficult for taking place to drop.

Preferably, the inner cylinder is formed by splicing two semi-cylindrical shells.

Through adopting above-mentioned technical scheme, accomplish the back at the sample operation, dismantle the sampler barrel from the solid fixed cylinder get off, can two semicylinder casings of direct separation, can inspect sample soil, can improve the protection to sample soil, reduce the disturbance of sample soil, improve the accuracy nature of experimental data.

Preferably, the outer surface of the semi-cylindrical shell is provided with a limiting strip; the length direction of the limiting strip is consistent with that of the semi-cylindrical shell; a limiting groove which is in plug-in fit with the limiting strip is formed in the inner side wall of the outer barrel; the upper groove wall of the limiting groove penetrates through the upper end face of the outer barrel.

Through adopting above-mentioned technical scheme, set up spacing in the outside of semicylinder casing, when can reduce the sample, take place relative pivoted phenomenon between inner tube and the urceolus, improve the disturbance that reduces sample soil, further improve the accuracy nature of sample data.

Preferably, a strip-shaped hole is formed in the outer side wall of the outer cylinder and is far away from the fixed cylinder; the strip-shaped hole and the limiting groove are positioned on the same radial line of the outer barrel; the outer barrel is provided with a jack; the jack is communicated with one end of the strip-shaped hole far away from the fixed cylinder; the diameter value of the jack is larger than the groove width value of the strip-shaped hole.

Through adopting above-mentioned technical scheme, after the sample, through an auxiliary rod of interpolation in the jack to the drive auxiliary rod removes to the direction of keeping away from the jack along the length direction in bar hole, makes the auxiliary rod promote the inner tube and takes place relative slip with the urceolus, thereby can drive the inner tube and break away from the urceolus, is convenient for detect sample soil.

Preferably, the lower end of the fixed cylinder is provided with a threaded sleeve; the end part of the outer cylinder is sleeved outside the threaded sleeve and is in threaded connection with the threaded sleeve; the upper end of the inner cylinder is connected with one end, far away from the fixed cylinder, of the threaded sleeve in an abutting mode.

Through adopting above-mentioned technical scheme, set up the thread bush, be convenient for connect urceolus and solid fixed cylinder, after the sample, can conveniently take off the sampler barrel, after screwing up the urceolus, the one end butt of solid fixed cylinder is kept away from with the thread bush to can fix the inner tube, when the sample, can carry on spacingly to the inner tube, reduce and make the inner tube enter into the possibility in the solid fixed cylinder under the extrusion of soil.

Preferably, a fixing device is arranged outside the fixing cylinder; the fixing device comprises a fixing plate fixed on the ground; the section of the fixing plate is circular; the fixed plate is provided with a sliding chute; the sliding grooves are arranged in a plurality at intervals relative to the axis of the fixing plate; a sliding block is arranged in the sliding groove in a sliding manner; an abutting spring is connected between the sliding block and the groove wall of the sliding groove; the sliding block is provided with a clamping block; and the adjusting column is provided with an adjusting component for driving the clamping block to tightly abut against the side wall of the fixed cylinder.

Through adopting above-mentioned technical scheme, set up fixing device, can support the geotome, carry out the hammering to the geotome and make the geotome peg graft in soil deeply, can improve the area of contact of geotome and ground to make the geotome can keep vertical state peg graft in soil, improve the accuracy of sample. Drive the lateral wall laminating of grip block and fixed cylinder through adjusting part, increase geotome and fixing device's area of contact to improve the stability of geotome when using.

Preferably, the adjusting assembly comprises a fixing ring rotatably arranged on the outer side wall of the adjusting column; and a connecting rope is connected between the fixing ring and the clamping block.

Through adopting above-mentioned technical scheme, before borrowing soil, rotate the regulation post for the lower extreme of adjusting the post is kept away from the solid fixed cylinder, and solid fixed ring rebound, thereby make the interval increase between solid fixed ring and the grip block, connect the rope and be in the state of tightening, make and connect rope pulling grip block to remove to the direction that is close to the solid fixed cylinder along the spout, support the lateral wall of solid fixed cylinder. Simple structure, convenient operation after borrowing soil, need adjust the post through the antiport for it drives the plug and pegs graft in the shutoff is downthehole to adjust the post, makes the interior negative pressure that forms of solid fixed cylinder, holds sample soil. After the plug is inserted into the plugging hole, the distance between the fixing ring and the clamping block is reduced, so that the connecting rope is loosened, and the clamping block is far away from the fixing barrel under the action of the abutting spring.

Preferably, the fixing plate is provided with a locking device for fixing the fixing plate on the ground; the locking device comprises a driving gear ring rotationally arranged on the fixing plate and an adjusting gear ring meshed with the outer side wall of the driving gear ring; a plurality of adjusting gear rings are arranged at intervals in the circumferential direction of the driving gear ring; the adjusting gear ring is rotatably arranged on the fixing plate, and the inner side of the adjusting gear ring is in threaded connection with an inserting rod inserted on the ground; positioning grooves are formed in the two opposite sides of the inserted rod; the length direction of the positioning groove is consistent with the height direction of the inserted rod; an installation groove is formed in the fixed plate and is positioned below the adjusting gear ring; a positioning block in sliding fit with the positioning groove is arranged in the mounting groove; and the fixed plate is provided with a driving assembly for driving the driving gear ring to rotate.

Through adopting above-mentioned technical scheme, set up locking device, be fixed in the fixed plate subaerially, can support the geotome for the geotome can be along vertical direction stable lift, improves the accuracy nature of sample. Through rotating the drive assembly, drive the drive ring gear and rotate, because drive ring gear meshes with the regulation ring gear mutually, thereby can drive the rotation of regulation ring gear, adjust the inboard and inserted bar threaded connection of ring gear, and the locating piece sliding fit in both sides of inserted bar and the mounting groove, can make to insert and peg graft in soil, the setting of drive ring gear, can drive a plurality of regulation ring gears in step and rotate, and then can peg graft in soil by a plurality of inserted bars of synchronous drive, improve the fixed effect to the fixed plate, and be favorable to improving the efficiency of installing the fixed plate.

Preferably, a tooth socket is formed in the position, close to the driving gear ring, on the fixing plate; the driving assembly comprises a first rod fixed in the tooth groove, a second rod sleeved outside the first rod and a gear column fixed on the second rod; the first rod is sleeved with a connecting spring; the second rod is in sliding fit with the first rod; a magnet used for adsorbing the bottom of the gear column is arranged in the tooth groove; the gear column is meshed with the driving gear ring.

Through adopting above-mentioned technical scheme, under normal condition, the lower extreme of gear post is located the top of tooth's socket, and the gear post can rotate, through rotating the gear post for the gear post drives the rotation of drive ring gear, thereby drives the inserted bar and is fixed in subaerially. After the inserted bar is fixed in ground, the gear post is pressed to the rethread for the gear post is pegged graft in the tooth's socket, and the lower extreme of gear post adsorbs on magnet, makes the fixed grafting of gear post in the tooth's socket, and the lateral wall of gear post meshes with drive ring gear mutually all the time, makes the difficult emergence of drive ring gear rotate, accomplishes the fixed of inserted bar. When the drive ring gear is adjusted to needs, only need to promote the gear post to the one side of keeping away from the tooth's socket for the gear post breaks away from the absorption of magnet, under coupling spring's effect, makes the gear post keep away from the tooth's socket, thereby can rotate the gear post and adjust the drive ring gear.

Preferably, the upper end of the inserted bar is provided with a limiting piece.

Through adopting above-mentioned technical scheme, set up spacing piece, can carry out spacingly to the removal of inserted bar, reduce the inserted bar and remove too much and break away from with being connected of adjusting the ring gear.

In summary, the present application includes at least one of the following beneficial technical effects:

when the soil sampler is lifted, the soil sampler has an upward suction force on the sampled soil, so that the stability of the sampled soil in the soil sampler can be improved when the soil sampler is lifted, and the sampled soil is not easy to fall off;

the limiting strips are arranged on the outer side of the semi-cylindrical shell, so that the phenomenon of relative rotation between the inner cylinder and the outer cylinder during sampling can be reduced, the disturbance of sampling soil is reduced, and the accuracy of sampling data is further improved;

set up fixing device, can support the geotome, carry out the hammering to the geotome and make the geotome peg graft in soil deeply when, can improve the area of contact of geotome and ground to make the geotome can keep vertical state peg graft in soil, improve the accuracy of sample.

Drawings

Fig. 1 is a schematic structural diagram of the whole of the embodiment of the present application.

Fig. 2 is a schematic structural diagram of a soil sampling cylinder according to an embodiment of the present application.

Fig. 3 is an enlarged schematic view of a portion a in fig. 1.

Fig. 4 is a schematic structural diagram of a locking device according to an embodiment of the present application.

Fig. 5 is a schematic structural diagram of a driving assembly according to an embodiment of the present application.

Description of reference numerals: 1. a soil sampling cylinder; 11. an outer cylinder; 111. a limiting groove; 112. a strip-shaped hole; 113. a jack; 12. an inner barrel; 121. a semi-cylindrical housing; 122. a limiting strip; 13. a bottom cylinder; 2. a fixed cylinder; 21. a threaded sleeve; 22. plugging the hole; 3. connecting columns; 31. a through groove; 32. a threaded rod; 33. a plug; 34. an adjustment column; 35. a threaded hole; 4. a fixing device; 41. a fixing plate; 411. a chute; 412. mounting grooves; 413. positioning blocks; 414. a tooth socket; 42. a slider; 43. an abutment spring; 44. a clamping block; 45. an adjustment assembly; 451. a fixing ring; 452. connecting ropes; 453. a connector; 5. a locking device; 51. a drive gear ring; 52. adjusting the gear ring; 53. inserting a rod; 531. a limiting sheet; 532. positioning a groove; 54. a drive assembly; 541. a magnet; 542. a first lever; 543. a second lever; 544. a gear post; 545. a spring is connected.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses geodetic survey uses geodetic survey. Referring to fig. 1, the geodetic surveying geodetic apparatus comprises a geodetic cylinder 1, a fixed cylinder 2 and a connecting column 3 which are sequentially connected from bottom to top.

Referring to fig. 2, the soil sampling barrel 1 includes an outer barrel 11 and an inner barrel 12, the outer barrel 11 is a hollow cylindrical shell with both ends open, a bottom barrel 13 is formed at the lower end of the outer barrel 11, both ends of the bottom barrel 13 are open, the bottom barrel 13 is in a hollow circular truncated cone shape, and the large end of the bottom barrel 13 is fixedly connected with the lower end of the outer barrel 11. A limiting groove 111 is formed in the inner side wall of the outer cylinder 11, an upper groove wall of the limiting groove 111 penetrates through the upper end face of the outer cylinder 11, the length direction of the limiting groove 111 is consistent with the height direction of the outer cylinder 11, and two limiting grooves 111 are symmetrically arranged about the axis of the outer cylinder 11. A strip-shaped hole 112 is formed in the outer side wall of the outer cylinder 11, and the strip-shaped hole 112 and the limiting groove 111 are located on the same radial line of the outer cylinder 11. An insertion hole 113 is formed in the outer cylinder 11, the insertion hole 113 is communicated with one end of the strip-shaped hole 112 far away from the fixed cylinder 2, and the diameter value of the insertion hole 113 is larger than the groove width value of the strip-shaped hole 112. The inner cylinder 12 is inserted into the outer cylinder 11 and is slidably disposed along the height direction of the outer cylinder 11. The inner cylinder 12 is formed by splicing two semi-cylindrical shells 121, a limiting strip 122 is formed on the outer surface of the semi-cylindrical shells 121, the length direction of the limiting strip 122 is consistent with the length direction of the semi-cylindrical shells 121, the limiting strip 122 is in plug-in fit with the limiting groove 111, and the limiting strip 122 can slide along the length direction of the limiting groove 111. When the inner cylinder 12 is inserted into the outer cylinder 11, the extension curved surface of the inner side wall of the inner cylinder 12 is located on the extension curved surface of the inner side wall of the small end of the bottom cylinder 13, the bottom of the inner cylinder 12 and the connecting lines of the two insertion holes 113 are arranged at intervals, an auxiliary rod can be conveniently passed through the two insertion holes 113, the inner cylinder 12 is stirred, the inner cylinder 12 can be separated from the outer cylinder 11, and sampling soil is taken out.

Referring to fig. 1 and 2, the fixed cylinder 2 is detachably connected to the upper end of the outer cylinder 11, the threaded sleeve 21 is fixed to the lower end of the fixed cylinder 2, the inner side wall of the outer cylinder 11 is in threaded connection with the threaded sleeve 21, the upper end surface of the inner cylinder 12 abuts against the lower end surface of the threaded sleeve 21, and the extension curved surface of the inner side wall of the inner cylinder 12 is located on the extension curved surface of the inner side wall of the threaded sleeve 21. The upper end of the fixed cylinder 2 is provided with a plugging hole 22.

Referring to fig. 1, the connecting column 3 is fixed to the upper end of the fixed cylinder 2, a threaded hole 35 is formed in one end, away from the fixed cylinder 2, of the connecting column 3, a through groove 31 is formed in one circumferential side of the connecting column 3, and the bottom of the through groove 31 penetrates through the side wall of the other side of the connecting column 3. There is threaded rod 32 at screw hole 35 female connection, and threaded rod 32 is fixed with plug 33 near the one end of a fixed section of thick bamboo 2, and plug 33 is the round platform form, and plug 33's tip towards shutoff hole 22, and the one end that fixed section of thick bamboo 2 was kept away from to threaded rod 32 is fixed with adjusts post 34, and the one end that fixed section of thick bamboo 2 was kept away from to adjust post 34 is seted up threaded hole, is convenient for be connected with other parts, and the drive geotome is whole to be pegged graft and is got soil in soil. The plug 33 is inserted into the plugging hole 22 and abuts against the wall of the plugging hole 22. By rotating the adjusting column 34, the plug 33 can be controlled to be plugged into the plugging hole 22. The provision of the through slot 31 facilitates the viewing of the adjustment of the plug 33.

Referring to fig. 1 and 3, a fixing device 4 is attached to the outside of the fixing cylinder 2 in order to improve stability of the soil sampler when soil is sampled. The fixing device 4 includes a fixing plate 41, a slider 42, an abutment spring 43, a clamping block 44, and an adjustment assembly 45. The fixing plate 41 has a circular cross-section, and the fixing cylinder 2 passes through the center of the fixing plate 41 and is slidably fitted to the fixing plate 41. The fixing plate 41 is provided with four sliding slots 411, the sliding slots 411 are spaced apart from each other with respect to an axis of the fixing plate 41, and an extension line of the sliding slots 411 passes through a center of the fixing plate 41. The sliding block 42 is slidably connected in the sliding slot 411, and the sliding block 42 is a dovetail block. The two ends of the abutting spring 43 are respectively fixedly connected with one side of the sliding block 42 away from the center of the fixed plate 41 and the groove wall of the sliding groove 411. The clamping block 44 is fixedly mounted on the upper end surface of the sliding block 42, and one side of the clamping block 44 is attached to the outer side wall of the fixed cylinder 2. The adjusting component 45 is mounted on the adjusting column 34 and is used for driving the clamping block 44 to abut against the side wall of the fixed cylinder 2. The adjusting component 45 comprises a fixing ring 451 and a connecting rope 452, the fixing ring 451 is sleeved on the adjusting column 34 and is in running fit with the adjusting column 34, two ends of the connecting rope 452 are fixed with a connecting head 453, the connecting head 453 comprises the fixing ring 451 and a threaded column, the end part of the connecting rope 452 is fixedly connected with the fixing ring 451, and the threaded column is fixed on one side of the fixing ring 451. One end of one threaded post is inserted and fixed in the circumferential direction of the fixing ring 451, and one end of the other threaded post is screwed to the upper end surface of the holding block 44.

Referring to fig. 1 and 4, a locking device 5 is installed on the fixing plate 41 to fix the fixing plate 41 to the ground. The locking device 5 comprises a driving gear ring 51, an adjusting gear ring 52, a plunger 53 and a driving assembly 54, wherein the driving gear ring 51 is rotatably connected to the fixed plate 41, and the center of the driving gear ring 51 is coincident with the center of the fixed plate 41. The adjusting ring gear 52 is rotatably connected to the fixed plate 41, the adjusting ring gear 52 is engaged with an outer side wall of the driving ring gear 51, and the adjusting ring gear 52 is provided in plurality at intervals in the circumferential direction of the driving ring gear 51. The inner side wall of the adjusting gear ring 52 is tapped with internal threads, and the circumferential direction of the insert rod 53 is tapped with external threads matched with the adjusting gear ring 52 in a threaded manner. The stopper 531 is fixed to the upper end of the plunger 53, and can restrict the plunger 53 from being disconnected from the adjustment ring gear 52. The opposite both sides of inserted bar 53 all offer along the constant head tank 532 that inserted bar 53 length direction extended the setting, and the mounting groove 412 has been seted up to the below that just is located regulation ring gear 52 on fixed plate 41, and the lower extreme of inserted bar 53 passes mounting groove 412 and with mounting groove 412 sliding fit, is fixed with locating piece 413 in mounting groove 412, and locating piece 413 is provided with two about the circumference symmetry of mounting groove 412, locating piece 413 and constant head tank 532 sliding fit.

Referring to fig. 5, the driving assembly 54 drives the driving ring gear 51 to rotate, so that the driving ring gear 51 drives the inserting rod 53 to be inserted into the soil. The fixed plate 41 is provided with a tooth space 414 at a position close to one side of the driving ring gear 51, the driving assembly 54 comprises a magnet 541, a first rod 542, a second rod 543 and a gear column 544, the magnet 541 is fixed at the bottom of the tooth space 414, the lower end of the first rod 542 passes through the magnet 541 and is fixed at the bottom of the tooth space 414, and the axis of the first rod 542 coincides with the axis of the tooth space 414. The upper end of the first rod 542 is fixed with a connecting piece, and a connecting spring 545 is sleeved on the first rod 542 and below the connecting piece. A coupling ring slidably engaged with the first lever 542 is fixed to a lower end of the second lever 543, and a lower end of the coupling spring 545 is fixedly coupled to an upper end surface of the coupling ring. The outer side wall of the connecting piece is in sliding fit with the inner side wall of the second rod 543. The gear column 544 is fixed to the second rod 543, and the gear column 544 has a tooth width larger than that of the driving ring gear 51, and the gear column 544 is engaged with the driving ring gear 51. Under the state of not receiving external force, the lower terminal surface of gear column 544 and the upper end surface of fixed plate 41 set up at an interval, gear column 544 meshes with drive ring gear 51, can drive ring gear 51 through rotating gear column 544 and rotate, when needing to fix drive ring gear 51, press gear column 544, make gear column 544 overcome the elasticity of connecting spring 545, peg graft in tooth's socket 414, and adsorb the lower extreme of gear column 544 through magnet 541, make gear column 544 fix in tooth's socket 414 and can not rotate, because the tooth width of gear column 544 is greater than the tooth width of drive ring gear 51, can make gear column 544 mesh with drive ring gear 51 all the time, gear column 544 pegs graft in tooth's socket 414 and can not rotate, make drive ring gear 51 also fixed.

The implementation principle of the geodetic surveying device in the embodiment of the application is as follows: when soil is taken, the inner cylinder 12 is inserted into the outer cylinder 11 from the upper end of the outer cylinder 11, the outer cylinder 11 is in threaded connection with the fixed cylinder 2, so that the soil taking cylinder 1 is fixedly connected with the fixed cylinder 2, and then soil taking operation is carried out.

Before the operation of borrowing soil, rotate the regulation post 34 for the fixed ring 451 increases with the distance of grip block 44, connects rope 452 and is in the state of tightening, thereby can draw grip block 44 and the lateral wall of solid fixed cylinder 2 to draw close through connecting rope 452, supports solid fixed cylinder 2, can stabilize vertical decline when feasible solid fixed cylinder 2 fetches soil.

After the inner tube 12 is filled with the sampling soil, the distance between the fixing ring 451 and the clamping block 44 is reduced by reversely rotating the adjusting column 34, so that the connecting rope 452 is loosened, the clamping block 44 is driven to be away from the fixing tube 2 under the action of the abutting spring 43, and the support for the fixing tube 2 is loosened. And adjust 34 drive plug 33 and peg graft in shutoff hole 22 of post, make shutoff hole 22 plugged up, form one section cavity between 2 inner chambers of solid fixed cylinder and the sample soil, when last soil ware of drawing, the soil of inner tube 12 can be because one section distance of self gravity slip, make the cavity volume increase between 2 inner chambers of solid fixed cylinder and the sample soil, under the unchangeable condition of sample soil, make and form the negative pressure in the cavity, there is an ascending suction to sample soil, thereby when can improving the sampler and lift, the stability of sample soil in the soil sampler, sample soil is difficult for taking place to drop.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a geodetic survey uses geodetic survey, includes solid fixed cylinder (2), sets up in solid fixed cylinder (2) below geodetic survey section of thick bamboo (1), its characterized in that: a plugging hole (22) is formed above the fixed cylinder (2); a connecting column (3) is fixed at the upper end of the fixed cylinder (2); one end of the connecting column (3) far away from the fixed cylinder (2) is provided with a threaded hole (35); a threaded rod (32) is connected with the threaded hole (35) in an internal thread manner; one end of the threaded rod (32) close to the fixed cylinder (2) is provided with a plug (33) which is abutted against the plugging hole (22); one end of the threaded rod (32) far away from the fixed cylinder (2) is provided with an adjusting column (34); the soil sampling cylinder (1) comprises an outer cylinder (11) detachably connected with the lower part of the fixed cylinder (2) and an inner cylinder (12) inserted in the outer cylinder (11);

a fixing device (4) is arranged outside the fixed cylinder (2); the fixing device (4) comprises a fixing plate (41) fixed on the ground; the section of the fixing plate (41) is circular; the fixed plate (41) is provided with a sliding chute (411); the sliding grooves (411) are arranged in a plurality at intervals relative to the axis of the fixing plate (41); a sliding block (42) is arranged in the sliding groove (411) in a sliding manner; an abutting spring (43) is connected between the sliding block (42) and the groove wall of the sliding groove (411); a clamping block (44) is arranged on the sliding block (42); the adjusting column (34) is provided with an adjusting component (45) for driving the clamping block (44) to be tightly abutted against the side wall of the fixed cylinder (2);

the adjusting assembly (45) comprises a fixing ring (451) rotatably arranged on the outer side wall of the adjusting column (34); a connecting rope (452) is connected between the fixing ring (451) and the clamping block (44).

2. The geodetic surveying device of claim 1, wherein: the inner cylinder (12) is formed by splicing two semi-cylindrical shells (121).

3. The geodetic surveying device of claim 2, wherein: a limiting strip (122) is arranged on the outer surface of the semi-cylindrical shell (121); the length direction of the limiting strip (122) is consistent with that of the semi-cylindrical shell (121); a limiting groove (111) which is in plug-in fit with the limiting strip (122) is formed in the inner side wall of the outer barrel (11); the upper groove wall of the limiting groove (111) penetrates through the upper end face of the outer cylinder (11).

4. The geodetic surveying device as defined in claim 3, wherein: a strip-shaped hole (112) is formed in the outer side wall of the outer cylinder (11) and is far away from the fixed cylinder (2); the strip-shaped hole (112) and the limiting groove (111) are positioned on the same radial line of the outer cylinder (11); the outer barrel (11) is provided with an insertion hole (113); the insertion hole (113) is communicated with one end of the strip-shaped hole (112) far away from the fixed cylinder (2); the diameter value of the insertion hole (113) is larger than the groove width value of the strip-shaped hole (112).

5. The geodetic surveying device of claim 1, wherein: the lower end of the fixed cylinder (2) is provided with a threaded sleeve (21); the end part of the outer cylinder (11) is sleeved outside the threaded sleeve (21) and is in threaded connection with the threaded sleeve (21); the upper end of the inner cylinder (12) is abutted against one end, far away from the fixed cylinder (2), of the threaded sleeve (21).

6. The geodetic surveying device of claim 1, wherein: the fixing plate (41) is provided with a locking device (5) for fixing the fixing plate (41) on the ground; the locking device (5) comprises a driving gear ring (51) rotationally arranged on the fixing plate (41) and an adjusting gear ring (52) meshed with the outer side wall of the driving gear ring (51); the adjusting gear rings (52) are arranged in plurality at intervals in the circumferential direction of the driving gear ring (51); the adjusting gear ring (52) is rotatably arranged on the fixing plate (41), and the inner side of the adjusting gear ring (52) is in threaded connection with an inserting rod (53) inserted on the ground; positioning grooves (532) are formed in two opposite sides of the inserted rod (53); the length direction of the positioning groove (532) is consistent with the height direction of the inserted rod (53); an installation groove (412) is formed in the fixed plate (41) and is positioned below the adjusting gear ring (52); a positioning block (413) in sliding fit with the positioning groove (532) is arranged in the mounting groove (412); and a driving component (54) for driving the driving gear ring (51) to rotate is arranged on the fixed plate (41).

7. The geodetic surveying device of claim 6, wherein: a tooth groove (414) is formed in the position, close to the driving gear ring (51), on the fixed plate (41); the driving assembly (54) comprises a first rod (542) fixed in the tooth groove (414), a second rod (543) sleeved outside the first rod (542), and a gear column (544) fixed on the second rod (543); the first rod (542) is sleeved with a connecting spring (545); the second rod (543) is in sliding fit with the first rod (542); a magnet (541) used for adsorbing the bottom of the gear column (544) is arranged in the tooth groove (414); the gear column (544) is meshed with the driving gear ring (51).

8. The geodetic surveying device as defined in claim 6, wherein: the upper end of the inserted bar (53) is provided with a limiting piece (531).