CN118148502A - Reaming device for geological investigation for engineering construction - Google Patents

Abstract

The invention discloses a reaming device for geological investigation for engineering construction, and relates to the technical field of engineering construction. The invention comprises an outer tube with two sliding rails on the inner side; the reamer part comprises shrinkage grooves respectively formed in two sides of the protection pipe, shrinkage frames are fixedly mounted on two sides of the protection pipe and located on the shrinkage grooves, and the reamer part is mounted on the protection pipe. The advantages are that: this reaming device passes through the setting of supplementary blade, can reduce the reaming board and rotate the resistance that receives when reaming to can improve device operating efficiency, improve reaming efficiency, the setting of rethread clean fluted roller can clean the flexible frame fast, thereby can improve reaming part operating stability, improve the high efficiency of geological survey, and through shrink ball and fixed part's setting, can realize forcing the recovery to reaming part, thereby can improve device reaming reliability, improve the device flexibility.

Description

Reaming device for geological investigation for engineering construction

Technical Field

The invention relates to the technical field of engineering construction, in particular to a reaming device for geological investigation for engineering construction.

Background

In engineering construction, geological exploration is a key step, and is helpful for understanding the properties of soil and rock, providing necessary information for engineering design and construction, and reaming is a common means in geological exploration for obtaining deeper soil or rock samples;

the existing reaming device for geological survey for engineering construction has the advantage of increasing the adaptability of the reaming device, but the following defects also exist at the same time: the reaming device cannot protect the reaming mechanism, when sundries such as stones in the drilling of the reaming mechanism are blocked (namely, the stones are clamped between the reaming component and the containing component), the reaming mechanism cannot be contracted into the drill pipe, the stability of the holes is easily damaged during recovery, and the rotary pipe cannot be recovered easily when the stability is serious; therefore, the reaming device for geological survey for engineering construction can be adopted to solve the defects in the prior art.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a reaming device for geological investigation for engineering construction, which solves the problem that the reaming device can not be recovered normally in the prior art.

In order to achieve the above purpose, the invention is realized by the following technical scheme: comprises an outer tube with two sliding rails arranged on the inner side; the device comprises a connecting part, a connecting part and a drilling part, wherein the connecting part is used for connecting all parts in series and transmitting rotating force and torque for all the parts, the connecting part comprises sliding blocks which are respectively and slidably arranged in two sliding rails, a telescopic pipe is fixedly arranged on each sliding block, an inner pipe is fixedly arranged in each telescopic pipe, a triggering part is arranged on each inner pipe, a pressure release part is arranged on each inner pipe, a protection pipe is fixedly communicated with the bottom of each telescopic pipe, a connecting pipe is slidably arranged at one end of each protection pipe, which is far away from each telescopic pipe, and a drilling part is arranged on each connecting pipe;

The reamer part is used for improving the rock stratum sampling quality, the rock stratum sampling quantity and the stability of the hole wall, and comprises shrinkage grooves respectively formed in two sides of a protection pipe, shrinkage frames are fixedly arranged on two sides of the protection pipe and are positioned on the shrinkage grooves, and reaming parts are arranged on the protection pipe;

And the prevention part is used for improving the fluency of the recovery of the reaming part and comprises a shrinkage ball, and the upper end and the lower end of the shrinkage ball are respectively connected with the inner pipe and the connecting pipe through sealing parts.

The invention provides a reaming device for geological survey for engineering construction, which has the following beneficial effects:

1. This reaming device has the advantage that reduces the hole-enlarging plate rotation resistance, through the setting of auxiliary blade on the hole-enlarging plate, can make the hole-enlarging plate when rotating fast and carry out the reaming operation, reduce the resistance that receives when its reaming, improve reaming efficiency, can improve the stability of pore wall simultaneously, improve geological prospecting efficiency.

2. This reaming device has the advantage that reduces impurity and blocks up the gap between shrink groove and the reaming board, through the setting of baffle, can make the reaming board when rotating, reduce the inside possibility of impurity entering protection pipe such as stone, improve the smoothness nature of device operation, can improve reaming efficiency simultaneously, make things convenient for reaming device to retrieve.

3. This reaming device has shrink frame self-cleaning's advantage, through helical gear and clean gear's setting, can clear up the impurity that is stained with on the shrink frame fast, improves the smoothness nature when reaming device retrieves, can improve the efficiency of geological investigation simultaneously, improves the stability and the high efficiency of device operation.

4. This reaming device has the advantage of forcing to retrieve the reaming board, uses through the cooperation of shrink ball and fixed part, can realize retrieving fast to reaming part, improves geological investigation efficiency, improves device operation smoothness nature, and simultaneously through triggering the part setting, realizes that the shrink ball drives the backup pad and removes to can realize the holistic flexibility to the device.

To sum up, this reaming device passes through the setting of auxiliary blade, and the resistance that receives when can reduce the reaming board and rotate the reaming, improves device operation and reaming efficiency, simultaneously through the setting of clean fluted roller, can clean flexible frame fast, can improve reaming part operating stability, improves the high efficiency of geological investigation to through shrink ball and fixed part's setting, can realize forcing the recovery to reaming part, thereby can improve device reaming reliability, improve device flexibility.

Drawings

The invention is described in further detail below with reference to the attached drawing figures, wherein:

fig. 1 is a schematic structural diagram of a reaming device for geological survey for engineering construction according to the present invention;

FIG. 2 is a schematic view of the internal structure of FIG. 1;

FIG. 3 is a schematic view of the external structure of FIG. 1;

FIG. 4 is a schematic view of the drilling assembly of FIG. 2;

FIG. 5 is a schematic view of the drive assembly configuration of the cleaning tooth roller;

FIG. 6 is a block diagram of a stationary component;

FIG. 7 is a schematic view of the internal structure of FIG. 2;

FIG. 8 is a block diagram of a reamer part;

FIG. 9 is a schematic diagram of the secondary blade related structure;

FIG. 10 is a schematic view of a structure of a connection portion;

FIG. 11 is a top view of a pressure relief component;

FIG. 12 is a cross-sectional view taken along the direction A-A in FIG. 11;

FIG. 13 is a perspective view of FIG. 12;

FIG. 14 is a side view of the reamer part;

FIG. 15 is a cross-sectional view taken in the direction B-B of FIG. 14;

Fig. 16 is a perspective view of fig. 15;

FIG. 17 is an enlarged view of portion E of FIG. 16;

FIG. 18 is a top view of FIG. 2;

FIG. 19 is a cross-sectional view taken along the direction C-C in FIG. 18;

FIG. 20 is a perspective view of FIG. 19;

FIG. 21 is a top view of the reamer part;

FIG. 22 is a cross-sectional view taken along the direction D-D in FIG. 21;

Fig. 23 is an enlarged view of the portion F in fig. 22;

FIG. 24 is a perspective view of FIG. 22;

FIG. 25 is a schematic diagram showing the peripheral structure of a reaming device for geological survey for engineering construction;

Fig. 26 is a schematic structural view of the stopper.

In the figure: 1 outer tube, 2 slide rail, 3 slide block, 4 telescopic tube, 5 inner tube, 6 protective tube, 7 shrink groove, 8 shrink frame, 9 shrink ball, 10 connecting tube, 11 groove, 12 trigger ball, 13 electric telescopic rod one, 14 compression spring, 15 support plate, 16 rotary tube, 17 drill bit, 18 threaded rod, 19 fixed tube, 20 shaft wheel, 21 support plate, 22 hydraulic cylinder, 23 expansion plate, 24 support shaft, 25 auxiliary blade, 26 fixed rod, 27 electric telescopic rod two, 28 toothed rod, 29 rotary roller, 30 helical gear one, 31 rotary shaft, 32 cleaning toothed roller, 33 toothed ring, 34 fixed ring, 35 screw rod, 36 helical gear two, 37 baffle plate, 38 small pointed cone, 39 rack, 40 driving motor, 41 bracket, 42 slotted hole, 43 limited block, 44 rubber pad, 45 pressure release hole, 46 pressure release spring, 47 pressure release plate.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.

Referring to fig. 1 to 4, 7, 10 to 13, 18 to 20 and 25 to 26, a reaming device for geological survey for engineering construction comprises an outer tube 1 with two sliding rails 2 arranged on the inner side; the connecting part is mainly used for connecting all the components in series and transmitting the rotating force and the torque to all the components; the connecting portion includes the slider 3 of slidable mounting in two slide rails 2 respectively, and common fixed mounting has flexible pipe 4 on two sliders 3, and flexible pipe 4 internal fixation has inner tube 5, installs the triggering part on the inner tube 5, installs the pressure release part on the inner tube 5, and flexible pipe 4 bottom fixed intercommunication has protective tube 6, and protective tube 6 keeps away from flexible pipe 4 one end slidable mounting and has connecting pipe 10, installs on the connecting pipe 10 and bores the investigation part.

Through the arrangement of the sliding blocks 3 and the sliding rails 2, the telescopic pipe 4 can be quickly moved in the outer pipe 1, so that the geological survey depth is prolonged, the geological survey data accuracy is further improved, meanwhile, due to the arrangement of the outer pipe 1, borehole collapse can be prevented, and the borehole stability can be further improved;

the sliding rail 2 is fixedly provided with a hydraulic device (a device for transferring energy by utilizing liquid is a device for the prior art, and is not described herein, and not shown in the figure), the sliding block 3 is pushed by the hydraulic device to move in the sliding rail 2, and meanwhile, downward thrust can be applied to a drilling component, so that the drilling rate is improved.

The effect of the setting of trigger part mainly used control the flow of liquid inflow protection pipe 6 in the inner tube 5, improves each part in the protection pipe 6 and provides the protection, and the effect of the setting of boring the reconnaissance part mainly used bores the geological structure of reconnaissance stratum and soil simultaneously, is favorable to improving reconnaissance efficiency.

The triggering part comprises a groove 11 formed at one end of the inner pipe 5, an electric telescopic rod I13 is fixedly arranged on the inner wall of the inner pipe 5, a compression spring 14 is fixedly arranged in the telescopic pipe 4, one end, far away from the telescopic pipe 4, of the compression spring 14 is fixedly connected with a support plate 15 wedged with the groove 11, and the support plate 15 and the electric telescopic rod I13 are fixedly provided with a triggering ball 12 together; the trigger ball 12 is plastic material, and silt has been placed to its inside for overcome water buoyancy, and the diameter of trigger ball 12 equals the internal diameter of connecting pipe 10, through this mode, can retrieve reaming part fast, improves the stability of device operation.

The drilling and surveying component comprises a rotary pipe 16 which is rotatably connected to the connecting pipe 10, one end, far away from the connecting pipe 10, of the rotary pipe 16 is fixedly communicated with a drill bit 17, a water outlet hole is formed in the drill bit 17, a threaded rod 18 is fixedly arranged on the outer wall of the connecting pipe 10, a fixed pipe 19 is arranged on the threaded rod 18 in a threaded manner, the fixed pipe 19 is fixedly connected with the protection pipe 6, and a shaft wheel 20 is fixedly arranged on the connecting pipe 10; the rotary pipe 16 can quickly transfer kinetic energy transferred by the driving device to the drill bit 17, so that the energy utilization rate is improved, the shape of the drill bit 17 is an approximate semicircle sphere, the contact area of the drill bit 17 can be increased, the resistance of the drill bit 17 is reduced, the operation efficiency of the device is improved, the reaming efficiency of the device is improved, water flows into the drill bit 17 through the inner pipe 5 by the aid of the water outlet hole formed in the surface of the drill bit 17, the surface of the drill bit 17 is cooled by the aid of the external water pipe, and the service life of the drill bit is prolonged.

The pressure release part comprises a plurality of pressure release holes 45 formed in the inner pipe 5, a plurality of pressure release springs 46 are fixedly arranged on the telescopic pipe 4, and pressure release plates 47 corresponding to the pressure release holes 45 are fixedly arranged on the pressure release springs 46; the pressure release hole 45 is oval form, and the rivers flow out fast in this mode is convenient for inner tube 5, improves reaming part recovery efficiency, cooperates the setting of pressure release spring 46 simultaneously, can reduce the rivers and strike flexible pipe 4 to reduce drill bit 17 angular displacement, stability when improving the device operation, thereby improve drilling efficiency, improve the efficiency of geological investigation.

1-2, 5-6, 8-9, 14-17 And 21-25, the reamer is primarily used to improve formation sampling quality and quantity and hole wall stability;

the reamer part comprises shrinkage grooves 7 which are respectively arranged on two sides of the protection pipe 6, shrinkage frames 8 are fixedly arranged on two sides of the protection pipe 6, the shrinkage frames 8 are positioned on the shrinkage grooves 7, and the reamer part is arranged on the protection pipe 6; the shrinkage groove 7 is arranged in a semicircular arc manner and is fixedly arranged on two sides of the protection pipe 6 in a welding manner, so that the protection and the preservation of the reaming part are facilitated, the service life of the device is prolonged, meanwhile, the protection pipe 6 is in a circular truncated cone shape, the stability of the drill bit 17 during rotation can be improved, and the drilling deviation angle is reduced; the function that reaming part set up is mainly the staff of being convenient for obtain underground rock stratum sample, is convenient for further know underground soil distribution and structure, provides more references to engineering construction's design and construction simultaneously.

The reaming part is including seting up the storage tank on shrink frame 8, the backup pad 21 is all installed through fixed subassembly to the protection pipe 6 both sides, equal fixed mounting has a plurality of hydraulic cylinder 22 on two backup pads 21, common fixed mounting has the baffle 37 that agrees with shrink groove 7 mutually on a plurality of hydraulic cylinder 22 on the same side, common fixed mounting in a plurality of hydraulic cylinder 22 tops on the same side expands orifice plate 23, equal fixed mounting in two expanding orifice plate 23 both sides tops has back shaft 24, a plurality of auxiliary blade 25 are all rotated on the two back shaft 24, the storage tank is used for accomodating auxiliary blade 25, the clean groove has all been seted up on two expanding orifice plate 23 both sides, install clean subassembly in the clean groove.

The arrangement of the hydraulic cylinder 22 is beneficial to overcoming the external resistance of the geology by the hole expansion plate 23, so that the hole expansion effect is improved, meanwhile, the arrangement of the auxiliary blade 25 can reduce the resistance of the hole expansion plate 23 during rotation, the rotation efficiency is improved, and the bottom of the supporting plate 21 is fixedly connected with the shrinkage ball 9, so that the protection of hole expansion parts is facilitated; the setting of clean subassembly is mainly used for cleaning debris such as remaining stone in the shrink frame 8, improves the hole expanding plate 23 recovery efficiency, improves the life of hole expanding plate 23, and the setting of fixed subassembly is mainly used for providing the supporting point for the hydraulic cylinder 22 on the backup pad 21 simultaneously, improves the stability when reaming part operates.

The fixing component comprises square grooves formed in two sides of the supporting plate 21, round shafts are fixedly arranged in the two square grooves, a fixing rod 26 is rotatably arranged on the round shafts, a plurality of slotted holes 42 are formed in the side wall of the protection tube 6, a second electric telescopic rod 27 is fixedly arranged in the plurality of slotted holes 42, a round hole is formed in one end, far away from the round shafts, of the fixing rod 26, and one end of the second electric telescopic rod 27 penetrates through the round hole in a sliding mode; the second electric telescopic rod 27 is extended, so that the supporting force of the supporting plate 21 to the hydraulic cylinder 22 can be realized, the stability of the reaming device during operation is improved, and the second electric telescopic rod 27 is contracted. The fixing rod 26 can be quickly separated from the fixing rod, so that the recovery of the reaming device is realized, and the operation flexibility of the device is improved.

The cleaning assembly comprises two toothed bars 28 fixedly arranged on the front side and the rear side of the shrinkage groove 7 respectively, driving grooves are formed in the front side and the rear side of the hole expanding plate 23, rotating rollers 29 are fixedly arranged in the two driving grooves, bevel gears I30 meshed with the corresponding toothed bars 28 are rotatably arranged on the two rotating rollers 29, rotating shafts 31 are rotatably arranged on the two cleaning grooves, a plurality of cleaning toothed rollers 32 are arranged on the two rotating shafts 31, the cleaning toothed rollers 32 on the same rotating shaft 31 are divided into two groups, one group of cleaning toothed rollers 32 is directly fixedly arranged on the rotating shaft 31, a plurality of racks 39 are fixedly arranged on the rotating shaft 31, the other group of cleaning toothed rollers 32 is rotatably arranged on the rotating shaft 31 through toothed rings 33, the toothed rings 33 are meshed with the racks 39, and bevel gears II 36 meshed with the bevel gears I30 are fixedly arranged on the two rotating shafts 31.

The cleaning tooth rollers 32 are divided into two groups, the two groups are arranged on the rotating shaft 31 in an adjacent and alternate mode, and the cleaning tooth rollers 32 are rotated through the arrangement of the first bevel gear 30, the second bevel gear 36 and the toothed bar 28, so that the shrinkage frame 8 can be quickly cleaned, the resistance to the shrinkage of the hole expansion plate 23 is reduced, the abrasion of the hole expansion plate 23 is reduced, and the service life of the hole expansion plate 23 is prolonged.

Referring to fig. 5 to 9, the preventing part is mainly used for improving the tool recovery smoothness of the reamer part; the prevention part comprises a shrinkage ball 9, and the upper end and the lower end of the shrinkage ball 9 are respectively connected with the inner pipe 5 and the connecting pipe 10 through sealing parts; the shrinkage ball 9 is elliptical, the contact area between the shrinkage ball 9 and the support plate 21 is conveniently increased, so that the stability between the support plate 21 and the shrinkage ball 9 is improved, circular rings are fixedly arranged at the upper end and the lower end of the shrinkage ball 9, the shrinkage ball is conveniently wedged with the connecting pipe 10, and the running stability of the device is improved.

The sealing component comprises fixing rings 34 fixedly arranged on the connecting pipe 10 and the inner pipe 5, rubber gaskets for sealing are fixedly arranged in the two fixing rings 34, threaded holes are formed in one ends of the two fixing rings 34, and screw rods 35 corresponding to the threaded holes are fixedly arranged in the other ends of the two fixing rings 34; by means of the arrangement of the rubber gasket and the fixing ring 34, the possibility that liquid in the inner pipe 5 overflows out of the pipe can be reduced, the overall tightness of the device is improved, the stability of the device in operation is further improved, meanwhile, the fixing ring 34 is further contracted by the arrangement of the screw 35 through the rotation of the screw 35, and therefore the tightness of the joint can be further improved.

Limiting blocks 43 are fixedly arranged at two ends of the two sliding rails 2, a driving motor 40 is connected with the top of the telescopic pipe 4 in a threaded manner, and a plurality of small pointed cones 38 are fixedly arranged on the drill bit 17 and the hole expanding plate 23; the setting of stopper 43 can prevent that drill bit 17 from droing, improves safety protection nature, and the little pointed cone 38 on the hole-expanding plate 23 and the drill bit 17 simultaneously can improve drilling efficiency, improves device work efficiency.

A rubber pad 44 is fixedly arranged at the bottom of the external bracket 41, and sand friction lines for increasing friction force are formed at the bottom of the rubber pad 44; the arrangement of the rubber pad 44 can reduce the vibration amplitude of the driving motor 40 during operation, improve the operation stability of the driving motor 40, and meanwhile, the friction force between the external bracket 41 and the ground can be increased by the sand friction lines, so that the stability of the device during operation of the driving component is further improved.

Further, the above-described fixed connection is to be understood in a broad sense, unless explicitly stated and defined otherwise, as being, for example, welded, glued, or integrally formed, as is well known to those skilled in the art.

When the invention is used, the driving motor 40 is started, water is injected into the inner tube 5 at the same time, the driving end of the driving motor 40 drives the telescopic tube 4 to rotate, the telescopic tube 4 drives the threaded rod 18 to rotate through the protection tube 6, so as to drive the drill bit 17 to rotate, the drill bit 17 drills downwards, when the drilling depth exceeds the length of the outer tube 1, the telescopic tube 4 moves downwards along the sliding rail 2 along with the sliding block 3, when the specified position is reached, the hydraulic cylinder 22 pushes the baffle 37 and the reaming plate 23, so that the distance between the reaming plates 23 is larger than the diameter of the drill bit 17, the reaming plate 23 rotates together with the telescopic tube 4, and after reaming is finished, the reaming part is contracted;

When the reaming part is normally recovered: the baffle 37 and the hole expanding plate 23 are pulled by the hydraulic cylinder 22 to approach the shrinkage frame 8, in the moving process of the hole expanding plate 23, the first bevel gear 30 on the hole expanding plate 23 rotates under the action of the toothed bar 28, the first bevel gear 30 drives the rotating shaft 31 to rotate through the second bevel gear 36, the rotating shaft 31 drives the toothed ring 33 to rotate through the rack 39, and the rotating shaft 31 and the toothed ring 33 drive the adjacent cleaning toothed rollers 32 to rotate in different directions, so that the surface of the shrinkage frame 8 is cleaned and is shrunk to coincide with the shrinkage frame 8.

When the reaming part is recovered abnormally: the expansion plate 23 can not be retracted through the hydraulic cylinder 22, the electric telescopic rod II 27 starts to shrink, the fixed rod 26 is separated from the electric telescopic rod II 27, meanwhile, the electric telescopic rod I13 starts to shrink, the trigger ball 12 falls to the joint of the connecting pipe 10 and the inner pipe 5 under the action of self gravity and blocks the connecting pipe 10, the compression spring 14 pushes the support plate 15 to be wedged with the groove 11 under the action of elastic potential energy of the compression spring, water in the inner pipe 5 pushes the pressure release plate 47 to move through water pressure, the pressure release plate 47 compresses the pressure release spring 46, water in the inner pipe 5 flows out of the pressure release hole 45 and overflows into the protection pipe 6, and when the external water pressure of the shrinkage ball 9 is increased and the internal water pressure is reduced, the shrinkage ball 9 pulls the two side support plates 21 and the fixed connecting parts on the support plates to move due to the internal water pressure and the external water pressure, and the shrinkage ball 9 is completely recovered into the shrinkage frame 8.

After reaming is completed, the driving motor 40 and water are stopped, and the reaming device is taken out.

The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.

Claims (10)

1. The reaming device for geological investigation for engineering construction is characterized by comprising an outer pipe (1) with two sliding rails (2) arranged on the inner side; the automatic drilling device is characterized by further comprising a connecting part, wherein the connecting part comprises sliding blocks (3) which are respectively and slidably arranged in the two sliding rails (2), telescopic pipes (4) are fixedly arranged on the sliding blocks (3) together, an inner pipe (5) is fixedly arranged in the telescopic pipes (4), a triggering part is arranged on the inner pipe (5), a pressure release part is arranged on the inner pipe (5), a protection pipe (6) is fixedly communicated with the bottom of the telescopic pipe (4), a connecting pipe (10) is slidably arranged at one end, far away from the telescopic pipes (4), of the protection pipe (6), and a drilling part is arranged on the connecting pipe (10);

The reamer part comprises shrinkage grooves (7) which are respectively formed in two sides of the protective tube (6), shrinkage frames (8) are fixedly arranged on two sides of the protective tube (6), the shrinkage frames (8) are positioned on the shrinkage grooves (7), and reamer parts are arranged on the protective tube (6);

the prevention part comprises a shrinkage ball (9), and the upper end and the lower end of the shrinkage ball (9) are respectively connected with the inner tube (5) and the connecting tube (10) through sealing parts.

2. The reaming device for geological survey for engineering construction according to claim 1, wherein the triggering component comprises a groove (11) formed in one end of the inner pipe (5), an electric telescopic rod I (13) is fixedly installed on the inner wall of the inner pipe (5), a compression spring (14) is fixedly installed in the telescopic pipe (4), a support plate (15) wedged with the groove (11) is fixedly connected to one end, away from the telescopic pipe (4), of the compression spring (14), and a trigger ball (12) is fixedly installed together with the electric telescopic rod I (13).

3. The reaming device for geological survey for engineering construction according to claim 1, wherein the drilling component comprises a rotary pipe (16) rotatably connected to the connecting pipe (10), one end of the rotary pipe (16) far away from the connecting pipe (10) is fixedly communicated with a drill bit (17), a water outlet hole is formed in the drill bit (17), a threaded rod (18) is fixedly arranged on the outer wall of the connecting pipe (10), a fixed pipe (19) is arranged on the threaded rod (18) in a threaded manner, the fixed pipe (19) is fixedly connected with the protecting pipe (6), and a shaft wheel (20) is fixedly arranged on the connecting pipe (10).

4. A reaming device for geological survey for engineering construction according to claim 3, characterized in that, the reaming part is including seting up the storage tank on shrink frame (8), backup pad (21) are all installed through fixed subassembly to the both sides of protection pipe (6), two all fixed mounting has a plurality of hydraulic cylinder (22) on backup pad (21), is located a plurality of on same side hydraulic cylinder (22) on common fixed mounting have baffle (37) and reaming board (23) that agree with shrink groove (7), two reaming board (23) both sides top all fixed mounting have back shaft (24), two all rotate on back shaft (24) and install a plurality of auxiliary blade (25), two all set up clean groove on reaming board (23) both sides, install clean subassembly in the clean groove.

5. The reaming device for geological survey for engineering construction according to claim 4, wherein the fixing assembly comprises fixing rods (26) rotatably arranged at two sides of the supporting plate (21), a plurality of slots (42) are formed in the side wall of the protecting pipe (6), and two electric telescopic rods (27) are fixedly arranged in the slots (42);

Square grooves are formed in two sides of the supporting plate (21), round shafts are fixedly arranged in the two square grooves, and the fixing rods (26) are rotatably arranged on the corresponding round shafts;

A round hole is formed in one end, far away from the round shaft, of the fixing rod (26), and one end of the second electric telescopic rod (27) penetrates through the round hole in a sliding mode.

6. The reaming device for geological survey for engineering construction according to claim 5, wherein the cleaning assembly comprises two toothed bars (28) fixedly installed on the front side and the rear side of the shrinkage groove (7), rotating rollers (29) are fixedly installed on the front side and the rear side of the reaming plate (23), a bevel gear I (30) meshed with the corresponding toothed bars (28) is rotatably installed on each rotating roller (29), a rotating shaft (31) is rotatably installed in each cleaning groove, and a plurality of cleaning toothed rollers (32) are installed on each rotating shaft (31);

The cleaning tooth rollers (32) on the same rotating shaft (31) are divided into two groups, one group of the cleaning tooth rollers (32) is directly and fixedly installed with the rotating shaft (31), a plurality of racks (39) are fixedly installed on the rotating shaft (31), the other group of the cleaning tooth rollers (32) is rotatably installed with the rotating shaft (31) through a tooth ring (33), the tooth ring (33) is meshed with the racks (39), and two bevel gears (36) meshed with the first bevel gears (30) are fixedly installed on the two rotating shafts (31);

Drive grooves are formed in the front side and the rear side of the reaming plate (23), and the rotating rollers (29) are fixedly arranged in the corresponding drive grooves.

7. The reaming device for geological survey for engineering construction according to claim 1, wherein the sealing member comprises fixing rings (34) fixedly mounted on the connecting pipe (10) and the inner pipe (5), the fixing rings (34) are arranged in a major arc, one ends of the fixing rings (34) are provided with threaded holes, and the other ends of the fixing rings are rotatably provided with threaded rods (35) corresponding to the threaded holes;

Rubber gaskets for sealing are fixedly arranged in the two fixing rings (34).

8. The reaming device for geological survey for engineering construction according to claim 1, wherein the pressure relief component comprises a plurality of pressure relief holes (45) formed in the inner pipe (5), a plurality of pressure relief springs (46) are fixedly mounted on the telescopic pipe (4), and pressure relief plates (47) corresponding to the pressure relief holes (45) are fixedly mounted on the pressure relief springs (46).

9. The reaming device for geological survey for engineering construction according to claim 4, wherein limiting blocks (43) for limiting the telescopic tube (4) are fixedly arranged at two ends of each sliding rail (2), a driving motor (40) is fixedly arranged at the top of the telescopic tube (4), the driving motor (40) is fixedly arranged on a support (41) arranged outside, and a plurality of small pointed cones (38) are fixedly arranged on each drill bit (17) and each reaming plate (23).

10. A geological survey reaming device according to claim 1, characterized in that said constricting channel (7) is arranged in a semi-circular arc.