CN110146326B - Core drilling machine - Google Patents

Abstract

The invention discloses a core drilling and taking machine, which is applied to the field of core drilling and taking machines and solves the technical problem that the core drilling and taking machines can only drill vertical holes but cannot simultaneously drill horizontal holes, and the technical scheme is characterized by comprising a support and a hole opening tank connected to the support, wherein a rotating shaft is rotatably connected to the support along the horizontal direction, a connecting plate is arranged on the rotating shaft, a guide post is arranged on the connecting plate along the direction vertical to the connecting plate, the connecting seat is connected to the guide post in a sliding manner, the hole opening tank is detachably connected to the connecting seat, a power element for driving the hole opening tank to rotate is arranged on the connecting seat, and a limiting assembly and a supporting assembly for fixing the guide post are arranged on the support; the technical effect who has is that can perpendicular to ground bore vertical hole, also can follow the perpendicular to wall and bore horizontally hole, and the function is various and can replace traditional manual work to bore horizontal hole, liberation labour.

Description

Core drilling machine

Technical Field

The invention relates to the field of core drilling and coring machines, in particular to a core drilling and coring machine.

Background

The core drilling machine is used for drilling holes in the ground, is suitable for spike installation, road pile installation, bridge drilling operation rules, integrated house pile foundation drilling and the like, and also has the core drilling function.

At present, Chinese patent with publication number CN207315272U discloses a concrete core drilling machine, which comprises a base and a pillar arranged on the base, wherein a drilling and coring device is arranged on the pillar, moving boxes with downward openings are arranged on two sides of one end of the base and the middle part of the other end of the base, casters are arranged in the moving boxes, and threaded rods penetrating through the top wall of the moving boxes are arranged on the casters; the four side plates of the movable box are internally provided with cavities which are communicated with each other and have downward openings, the outer side wall of the movable box is provided with air suction holes communicated with the cavities, the air suction holes are connected with air suction pipes, and the air suction pipes are connected with an air suction device.

The concrete drilling core-drilling machine has the technical scheme that after the trundles are taken in the moving box by rotating the threaded rods, the lower end face of the moving box is abutted to the road surface, the air exhaust device is started to exhaust air, the moving box can be tightly fixed on the ground, the concrete drilling core-drilling machine is not easy to move, and the effect of stably working is achieved. Many times we need punch on vertical wall body, conveniently let in various pipelines, however, above-mentioned concrete core drilling machine can only carry out the processing hole on the horizontal plane, and can not carry out the processing hole to vertical face to because ground also is not level and smooth, thereby the hole that leads to processing is also not level and smooth, consequently need design a drilling that can multi-angle punch and get core drilling machine.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide the core drilling machine, which has the advantages that vertical holes can be drilled perpendicular to the ground, horizontal holes can be drilled along the direction perpendicular to the wall surface, the functions are various, the traditional manual drilling of the horizontal holes can be replaced, and labor force is liberated.

The technical purpose of the invention is realized by the following technical scheme: the utility model provides a core machine is got in drilling, includes the support, connects the trompil jar on the support, it is connected with the pivot to rotate along the horizontal direction on the support, be equipped with the connecting plate in the pivot, follow the perpendicular to on the connecting plate the direction of connecting plate is equipped with the guide post, the connecting seat slides and connects on the guide post, the trompil jar can be dismantled and connect on the connecting seat, be equipped with on the connecting seat and be used for driving trompil jar pivoted power component, be equipped with on the support and be used for fixing the spacing subassembly and the supporting component of guide post.

Through above-mentioned technical scheme, power component is used for driving the trompil jar and rotates, and then realizes the function of drilling. Power component, trompil jar, connecting seat all set up on the connecting plate, and the connecting plate can rotate the position on the support through the pivot to make the trompil jar can level setting or vertical setting, and then can bore horizontally hole and vertical hole. The guide post is used for playing the effect of direction to the connecting seat for the in-process connecting seat of trompil can only move along vertical or horizontal direction. When the guide post is horizontally arranged, the supporting component is used for supporting the other end of the guide post, so that the guide post is more stable; when the guide post level set up, spacing subassembly is used for fixing the lower extreme of guide post and dies, prevents that the guide post from rocking for the process stability more that punches.

The invention is further configured to: the limiting assembly comprises a bottom plate fixed on the support and a limiting sleeve fixed on the bottom plate, the guide post comprises a guide sleeve and a guide rod in threaded connection with the guide sleeve, and the length of the guide rod is greater than that of the guide sleeve.

Through above-mentioned technical scheme, the screw thread guide bar in the uide bushing to make and rotate the guide bar, the guide bar removes in the uide bushing. When the vertical setting of trompil jar, rotate the guide bar this moment for during the guide bar inserted the stop collar, and then die the lower end of guide post is fixed.

The invention is further configured to: the utility model discloses a rotary table, including guide bar, connecting plate, fixed plate, Z shape pole, rocking handle, connecting plate, Z shape pole is connected to the rotation of the same time the carousel with the centre of a circle department of fixed plate, the arm length of Z shape pole with the arm length of rocking handle equals and the syntropy sets up.

Through above-mentioned technical scheme, two guide posts prevent that the connecting seat from rotating at the in-process that reciprocates, further improve the stability of trompil jar. The Z-shaped rod is rotated to drive the rotary table to rotate, the rotary table drives the two rocking handles to rotate simultaneously, and the rocking handles drive the guide rods to rotate, so that the two guide rods synchronously rotate, and the assembling speed of the guide rods is improved.

The invention is further configured to: the supporting component is connected including rotating the bracing piece on the support, the bracing piece is close to the one end of guide bar is followed the radial direction and the axial direction of bracing piece are equipped with the first connecting hole and the second connecting hole of intercommunication respectively, it is connected with the latch segment to rotate in the first connecting hole, slide in the second connecting hole and connect spacing post, the cross-section of latch segment is oval, be equipped with on the guide post with spacing hole of spacing post complex.

Through above-mentioned technical scheme, rotate the locking piece for spacing post reciprocates in the second connecting hole, and then makes spacing post can cooperate in spacing hole, thereby restriction guide post breaks away from with the bracing piece, makes the trompil jar when boring the hole of getting the horizontally, and the position of guide post is stable, further ensures the position stability of trompil jar. The minimum interference of the limiting column is matched in the limiting hole, so that the guide column and the support rod cannot shake.

The invention is further configured to: the middle part of latch segment with all be equipped with the T-slot on the spacing post, the T-slot on the latch segment circularizes, the T-slot is sharply appears and follows on the spacing post the diameter direction setting of spacing post, the stopper with be equipped with the connecting piece of connecting the I shape between the latch segment, the both ends of connecting piece are connected respectively in the difference in the T-slot.

Through the technical scheme, the limiting column can be pushed upwards by rotating the locking block, and the minimum interference of the limiting column is matched in the limiting hole, so that the limiting column cannot be separated from the supporting rod. The connecting piece is used for connecting spacing post and latch segment for the latch segment drives spacing post and can reciprocate at the pivoted in-process.

The invention is further configured to: the two ends of the connecting piece are rotatably connected with rotating sleeves.

Through above-mentioned technical scheme, the connecting piece all slides and connects on latch segment and spacing post, changes the setting of cover, reduces the connecting piece card in the T-slot, and then just can rotate the latch segment with very big power.

The invention is further configured to: the bracing piece includes threaded sleeve, threaded connection at the connecting rod at threaded sleeve both ends, first connecting hole and second connecting hole set up one of them on the connecting rod.

Through above-mentioned technical scheme, rotate the thread bush for the connecting rod contracts or extends in the thread bush, and then can adjust the effect of bracing piece length, ensures that the guide bar is in the horizontally position.

The invention is further configured to: the connecting plate is further provided with a rack along the direction perpendicular to the connecting plate, the rack penetrates through the connecting seat, the connecting seat is provided with a motor, and an output shaft of the motor is provided with a gear meshed with the rack.

Through above-mentioned technical scheme, the motor is fixed on the connecting seat, and the rack is fixed on the connecting plate, and when motor drive gear rotated, the motor can drive the connecting seat and remove along the length direction of guide bar, and through the torsion of motor output shaft, exert pressure to the trompil jar like this, realize automatic punching.

The invention is further configured to: follow on the gear the axial direction of gear is equipped with the connecting axle, be equipped with the adapter sleeve on the output shaft of motor, the adapter sleeve with be equipped with high strength's torsional spring between the connecting axle, torsional spring interference fit is in on the connecting axle, the one end of torsional spring is fixed on the adapter sleeve.

Through above-mentioned technical scheme, when the motor just passes, drive the direction removal of connecting seat to keeping away from the connecting plate, when the trompil jar meets big resistance for when the speed of trompil jar trompil can not follow motor drive's speed, can cause motor output shaft to twist off. When the gear is fixed, the output shaft of the motor continues to rotate at the moment, so that the torsion spring is opened and separated from the connecting shaft, and the connecting shaft and the connecting sleeve are relatively slipped, so that the output shaft of the motor is prevented from being twisted off.

The invention is further configured to: the lower extreme of support is equipped with scissors shape crane, the crane includes lower plate, upper plate, connects the crossbar between lower plate and upper plate, the support can be dismantled and connect on the bottom plate.

Through above-mentioned technical scheme, when punching vertical wall, be used for rising the eminence with the support through the crane and punch.

In conclusion, the invention has the following beneficial effects:

1. the vertical punching and the horizontal punching can be realized, and the application occasions are improved;

2. the motor can exert pressure to the connecting seat to set up the upper limit through the torsional spring, and then prevent motor output shaft twist-off.

Drawings

Fig. 1 is an overall configuration diagram of the present embodiment.

Fig. 2 is a schematic structural view of the perforated tank of the present embodiment in a vertical state.

Fig. 3 is a schematic structural view of the guide bar of the present embodiment.

Fig. 4 is a schematic structural diagram of the special disc, the hand wheel and the rocking handle in the embodiment.

Fig. 5 is a schematic structural diagram of the motor, the gear and the rack in the embodiment.

Fig. 6 is a schematic structural view of the crane and the stand of the embodiment.

Fig. 7 is a schematic structural view of the perforated tank of the present embodiment horizontally disposed.

Fig. 8 is a schematic structural view of the support column, the locking block and the limiting column of the embodiment.

Fig. 9 is a schematic structural view of the locking block and the limiting column of the present embodiment.

Fig. 10 is a schematic structural view of the connector of the present embodiment.

Reference numerals: 1. a support; 11. opening a hole; 12. a power element; 13. a connecting seat; 14. a rotating shaft; 15. a connecting plate; 2. a guide post; 20. a guide sleeve; 21. a guide bar; 22. a rocking handle; 23. a turntable; 24. a fixing plate; 25. a strut; 26. a Z-shaped bar; 27. a hand wheel; 28. a limiting hole; 3. a limiting component; 31. a base plate; 32. a limiting sleeve; 4. a support assembly; 40. a support bar; 401. a connecting rod; 402. a threaded sleeve; 41. a first connection hole; 42. a second connection hole; 43. a limiting column; 44. a locking block; 45. a T-shaped slot; 46. a connecting member; 47. locking nails; 48. rotating the sleeve; 5. a motor; 51. a gear; 52. a rack; 53. a connecting shaft; 54. connecting sleeves; 55. a torsion spring; 56. a baffle plate; 6. a lifting frame; 61. a lower base plate; 62. an upper base plate; 63. a cross bar.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b): referring to fig. 1 and 2, a core machine is got in drilling, which comprises a bracket 1, connect trompil jar 11 on support 1, support 1 is improved level and is set up pivot 14, pivot 14 rotates to be connected on support 1, set up connecting plate 15 in pivot 14, connecting plate 15 is integrative with pivot 14, set up two guide posts 2 along the direction of perpendicular to connecting plate 15 on connecting plate 15, slide on guide post 2 and set up connecting seat 13, set up power component 12 in the upper end of connecting seat 13, the embodiment is specifically the motor, the output shaft of motor sets up along the direction that is on a parallel with guide post 2, the output shaft of motor passes connecting seat 13, the upper end of trompil jar 11 can be dismantled with the output shaft of motor and be connected. When the motor is rotated, the perforated tank 11 is driven to rotate, and at the same time, a force is applied to the connecting base 13, so that the connecting base 13 moves away from the connecting plate 15, and the perforated tank 11 is drilled toward the ground.

Referring to fig. 2 and 3, when carrying out vertical drilling to ground, the vertical setting of guide post 2, because connecting plate 15 can rotate to the one end that connecting plate 15 was kept away from to guide post 2 is not retrained, thereby makes connecting plate 15 can rock around pivot 14, and then leads to punching unstability, and the hole of beating out is not straight. Locating under guide post 2 on support 1 and setting up spacing subassembly 3, spacing subassembly 3 is including fixing bottom plate 31 on support 1, the stop collar 32 integrative with bottom plate 31, and guide post 2 includes uide bushing 20, threaded connection at the guide bar 21 in uide bushing 20, and the diameter of guide bar 21 equals with the internal diameter of stop collar 32. When the guide rod 21 is rotated, the guide rod 21 slides in the guide sleeve 20, so that the guide rod 21 is fitted in the stop sleeve 32, thereby restraining the guide post 2.

Referring to fig. 2 and 4, the number of the guide posts 2 is two, two guide sleeves 20 are welded on the connecting plate 15, two guide rods 21 penetrate through the connecting plate 15 and are provided with rocking handles 22, the two rocking handles 22 are identical, a circular rotating disc 23 is arranged on the rocking handles 22, a fixing plate 24 is arranged above the rotating disc 23, the fixing plate 24, the rotating disc 23 and the connecting plate 15 are parallel to each other, a support rod 25 is arranged between the fixing plate 24 and the connecting plate 15, and the support rod 25 is used for fixing the fixing plate 24 on the connecting plate 15. A Z-shaped rod 26 is arranged on the fixing plate 24, two ends of the Z-shaped rod 26 are respectively connected to the rotary table 23 and the fixing plate 24 in a rotating mode, a hand wheel 27 is arranged on the Z-shaped rod 26, the hand wheel 27 is fixedly connected with the Z-shaped rod 26, and the arm length of the Z-shaped rod 26 is equal to that of the rocking handle 22 and is arranged in the same direction.

Referring to fig. 2 and 4, when the handwheel 27 is rotated, the Z-shaped rod 26 is made to rotate around the axis of the handwheel 27, so as to drive the turntable 23 to rotate, the turntable 23 drives the two rocking handles 22 to rotate, the rocking handles 22 drive the guide rods 21 to rotate, so as to rotate the handwheel 27, so that the two guide rods 21 rotate synchronously, thereby increasing the rotating speed of the guide rods 21. A certain distance is left between the rotating disc 23 and the fixing plate 24, and the numerical value of the distance is more than or equal to the length of the limiting sleeve 32.

Referring to fig. 2 and 5, a rack 52 is provided on the connecting plate 15 in a direction perpendicular to the connecting plate 15, the motor 5 is fixedly connected to the connecting base 13, a gear 51 is provided on an output shaft of the motor 5, and the gear 51 and the rack 52 are engaged with each other. When motor 5 drive gear 51 rotated, drive connecting seat 13 and slide on guide post 2, realized the function of drilling at the in-process that slides, realized automatic punching like this. The output shaft of the motor 5 is provided with a connecting sleeve 54, the gear 51 is provided with a connecting shaft 53 along the axial direction of the gear 51, the connecting shaft 53 is integrated with the gear 51, the connecting shaft 53 is rotatably connected in the connecting sleeve 54, the connecting shaft 53 is sleeved with a torsion spring 55, the torsion spring 55 is in interference fit with the connecting shaft 53, and one end of the torsion spring 55 is fixed in the connecting sleeve 54, so that the gear 51 is driven to rotate by the friction force between the torsion spring 55 and the connecting shaft 53.

Referring to fig. 5, when the motor 5 is set to rotate forward, the motor 5 drives the connecting seat 13 to move downward; when the motor 5 rotates reversely, the connecting seat 13 is driven to move upwards. One end of the torsion spring 55 is fixed to the connecting sleeve 54, so that when the motor 5 rotates, the torsion spring 55 is driven to rotate together. When motor 5 is just passing, if trompil jar 11 drilling resistance is too big, lead to gear 51 to block not rotatory, motor 5 continues to rotate this moment for the number of turns of torsional spring 55 diminishes, and the internal aperture grow, thereby makes the frictional force between torsional spring 55 and the connecting axle 53 diminish, and then makes to skid relatively between adapter sleeve 54 and the connecting axle 53, prevents like this that motor 5's output shaft card from dying. When the baffle 56 is arranged at one side of the gear 51, the connecting shaft 53 is abutted against the baffle 56, and the baffle 56 is fixed on the connecting seat 13, so that the connecting shaft 53 and the connecting sleeve 54 are limited to be separated.

Referring to fig. 7 and 8, when the guide bar 21 is rotated by 90 degrees, the support assembly 4 is hinged at the lower end of the support frame 1 by the perforated can 11 being in a horizontal state, thereby facilitating drilling of a horizontal hole. When the guide post 2 is horizontally disposed, the support member 4 is rotated so that the end of the guide post 2 remote from the connecting plate 15 is fixed. The support assembly 4 comprises two support rods 40 pivotally connected to the frame 1. When the guide bar 21 is in the horizontal position, the rotational support bar 40 is in the vertical position so that the guide bar 21 is just landed on the support bar 40. One end of the support rod 40 close to the guide post 2 is respectively provided with a first connecting hole 41 and a second connecting hole 42 along the radial direction and the axial direction of the support rod 40, a locking block 44 is rotatably connected in the first connecting hole 41, a limiting post 43 is slidably connected in the second connecting hole 42, the cross section of the locking block 44 is oval, and a limiting hole 28 (refer to fig. 3) matched with the limiting post 43 is arranged on the guide post 2.

Referring to fig. 7 and 8, when the locking block 44 is rotated, the limiting column 43 moves up and down in the second connecting hole 42, and then the limiting column 43 can be fitted in the limiting hole 28, so as to limit the separation of the guide column 2 from the supporting rod 40, so that the position of the guide column 2 is stable when the perforated tank 11 is drilled, and the position of the perforated tank 11 is further stable. The stopper post 43 is fitted in the stopper hole 28 (refer to fig. 3) with a minimum interference so that there is no play between the guide post 2 and the support rod 40.

Referring to fig. 8 and 9, T-shaped grooves 45 are formed in the locking block 44 and the limiting column 43, the T-shaped grooves 45 in the locking block 44 are located in the middle of the locking block 44 and are annularly arranged, the T-shaped grooves 45 in the limiting column 43 are formed in the diameter direction of the limiting column 43, and the two T-shaped grooves 45 are located on the same vertical plane. An I-shaped connecting piece 46 is arranged in the T-shaped groove 45, and two ends of the connecting piece 46 are respectively connected in the T-shaped groove 45 in a sliding manner. When the locking block 44 is rotated, the locking block 44 can push up the limiting column 43 and pull down the limiting column 43.

Referring to fig. 9 and 10, the rotating sleeves 48 are arranged at the two ends of the connecting piece 46, the connecting piece 46 is connected to the locking block 44 and the limiting column 43 in a sliding manner, and the rotating sleeves 48 prevent the connecting piece 46 from being clamped in the T-shaped groove 45, so that the situation that the locking block 44 can be rotated only by a large force is avoided.

Referring to fig. 8, a locking pin 47 is threadedly received at the upper end of the support rod 40 in the radial direction of the support rod 40, and the locking pin 47 is disposed perpendicular to the locking block 44. When the latch segment 44 pushes up spacing post 43, rotate the latch nail 47 this moment for the latch nail 47 extends to in the first connecting hole 41 and contradicts in the side of latch segment 44, thereby restrict the latch segment 44 and rotate, ensure that the latch segment 44 can not rotate because of the vibration, drive spacing post 43 and guide post 2 and break away from, further ensure the stability of bracing piece 40 to the support of guide post 2.

Referring to fig. 7, the support bar 40 includes two connecting rods 401 and a threaded sleeve 402 threaded on the connecting rods 401, and there is a reverse thread between the two connecting rods 401, and when the threaded sleeve 402 is rotated, the two connecting rods 401 are contracted or extended in the threaded sleeve 402, thereby adjusting the length of the support bar 40 and further ensuring that the guide bar 21 is in a horizontal state.

Referring to fig. 6, a scissor-shaped crane 6 is provided at the lower end of the support 1, the crane 6 includes a lower base plate 61, an upper base plate 62, and a cross bar 63 connected between the lower base plate 61 and the upper base plate 62, and the support 1 is detachably connected to the base plate 31. When boring vertical hole to ground, do not need crane 6, directly put support 1 subaerial can, when the hole to the big horizontally of vertical wall, because the highly different of hole, need crane 6 to rise the height of difference with support 1 this moment.

The action process is as follows: vertically punching, namely vertically arranging the guide post 2, rotating a hand wheel 27 to insert the guide rod 21 into the limiting sleeve 32, and starting the power element 12 and the motor 5 to punch; when punching horizontally, when rotating guide post 2 to the level, rotate bracing piece 40 for bracing piece 40 is located the lower extreme of guide post 2, and locks through spacing post 43.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims (8)

1. A core drilling and taking machine comprises a support (1) and a hole opening tank (11) connected to the support (1), and is characterized in that a rotating shaft (14) is rotatably connected to the support (1) in the horizontal direction, a connecting plate (15) is arranged on the rotating shaft (14), a guide post (2) is arranged on the connecting plate (15) in the direction perpendicular to the connecting plate (15), a connecting seat (13) is arranged on the guide post (2) in a sliding manner, the hole opening tank (11) is detachably connected to the connecting seat (13), a power element (12) for driving the hole opening tank (11) to rotate is arranged on the connecting seat (13), and a limiting assembly (3) and a supporting assembly (4) for fixing the guide post (2) are arranged on the support (1); the limiting assembly (3) comprises a bottom plate (31) fixed on the support (1) and a limiting sleeve (32) fixed on the bottom plate (31), the guide column (2) comprises a guide sleeve (20) and a guide rod (21) in threaded connection with the guide sleeve (20), and the length of the guide rod (21) is greater than that of the guide sleeve (20); support assembly (4) are connected including rotating bracing piece (40) on support (1), bracing piece (40) are close to the one end of guide bar (21) is followed the radial direction and the axial direction of bracing piece (40) are equipped with first connecting hole (41) and second connecting hole (42) of intercommunication respectively, it has latch segment (44) to rotate in first connecting hole (41), slide in second connecting hole (42) and connect spacing post (43), the cross-section of latch segment (44) is oval, be equipped with on guide post (2) with spacing post (43) complex spacing hole (28).

2. The core drilling and taking machine as claimed in claim 1, wherein the two guide rods (21) are arranged in parallel, rocking handles (22) are arranged at the upper ends of the two guide rods (21), a circular rotating disc (23) is arranged on each rocking handle (22), a fixing plate (24) is arranged above each rotating disc (23), a support rod (25) is arranged between each connecting plate (15) and each fixing plate (24), a Z-shaped rod (26) is rotatably connected to each fixing plate (24), the Z-shaped rods (26) are simultaneously rotatably connected to the rotating discs (23) and the fixing plates (24), and the arm lengths of the Z-shaped rods (26) and the arm lengths of the rocking handles (22) are equal and in the same direction.

3. The core drilling and coring machine as set forth in claim 1, wherein T-shaped grooves (45) are formed in the middle of the locking block (44) and the limiting column (43), the T-shaped grooves (45) in the locking block (44) are annular, the T-shaped grooves (45) in the limiting column (43) are linear and are arranged along the diameter direction of the limiting column (43), a connecting member (46) connecting the T-shapes is arranged between the limiting column (43) and the locking block (44), and two ends of the connecting member (46) are respectively connected to different T-shaped grooves (45).

4. Core drilling and coring machine according to claim 3, characterized in that the connecting piece (46) is rotatably connected at both ends with a rotating sleeve (48).

5. Core drilling and coring machine according to claim 4, characterized in that said supporting rod (40) comprises a threaded bushing (402), a connecting rod (401) threaded at both ends of the threaded bushing (402), said first connecting hole (41) and second connecting hole (42) being provided on one of said connecting rods (401).

6. Core drilling and coring machine as claimed in claim 1, characterized in that a rack (52) is further provided on the connecting plate (15) along a direction perpendicular to the connecting plate (15), the rack (52) passes through the connecting seat (13), the connecting seat (13) is provided with a motor (5), and an output shaft of the motor (5) is provided with a gear (51) engaged with the rack (52).

7. The core drilling and extracting machine as claimed in claim 6, characterized in that a connecting shaft (53) is arranged on the gear (51) along the axial direction of the gear (51), a connecting sleeve (54) is arranged on the output shaft of the motor (5), a high-strength torsion spring (55) is arranged between the connecting sleeve (54) and the connecting shaft (53), the torsion spring (55) is in interference fit with the connecting shaft (53), and one end of the torsion spring (55) is fixed on the connecting sleeve (54).

8. Core drilling and coring machine as claimed in claim 1, characterized in that the lower end of the support (1) is provided with a scissor-shaped lifting frame (6), said lifting frame (6) comprising a lower base plate (61), an upper base plate (62), a cross bar (63) connected between the lower base plate (61) and the upper base plate (62), said support (1) being detachably connected to said base plate (31).

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