CN218971108U - Rotary drilling rig - Google Patents

Abstract

The utility model relates to the technical field of pile foundations, and provides a rotary drilling rig, which comprises a drilling rig main body, a rotary drilling method assembly, a grab bucket assembly and a pulley yoke, wherein the pulley yoke comprises a frame body, a first pulley and a second pulley, the frame body is arranged at the top end of a mast of the drilling rig main body, the first pulley and the second pulley are arranged on the frame body, a steel wire rope is wound on the pulley yoke, the steel wire rope is connected with the rotary drilling method assembly or the grab bucket assembly after sequentially bypassing the first pulley and the second pulley, and a space for preventing mutual interference is reserved between the steel wire rope and the mast; the position of the second pulley is adjustable along the length direction of the frame body. The steel wire rope is connected with the rotary construction method assembly or the grab bucket assembly, so that the rotary construction method assembly and the grab bucket assembly are switched for use, the rotary drilling rig can realize rotary drilling and continuous wall duplex operation, and different requirements on a construction range in different construction methods can be met only by adjusting the installation position of the second pulley, a pulley frame is not required to be replaced, and the manufacturing cost of the rotary drilling rig is reduced.

Description

Rotary drilling rig

Technical Field

The utility model relates to the technical field of pile foundations, in particular to a rotary drilling rig.

Background

The rotary drilling rig is pore-forming equipment for building pile foundation construction, the continuous wall grab bucket is groove-digging equipment for pile foundation engineering construction of high-rise buildings, subways and the like, and the two equipment belong to pile foundation construction equipment and have various similarities in operation and construction modes. However, both are basically produced professionally and manufactured separately. Thus, not only is the investment cost of enterprises increased because of the single function of the two devices, but also the transfer from one construction site to the other construction site is difficult because of the large volume and weight of the two devices.

Therefore, in order to reduce the cost and the transfer difficulty, the drilling tool of the rotary drilling rig is replaced to realize the conversion of two functions of drilling and grooving in the prior art, so that the rotary drilling rig has the continuous wall grab function; however, since the width of the grab bucket forming groove is generally larger than the radius of the rotary drilling bucket, the center of the working device is required to be farther from the section of the mast, and the center distance between the drilling bucket of the rotary drilling machine with the continuous wall grab bucket function in the prior art and the center distance between the drilling bucket of the rotary drilling machine and the continuous wall grab bucket are the same, so that the width of the grab bucket forming groove is limited.

Disclosure of Invention

The utility model provides a rotary drilling rig, which is used for solving the defect that the width of a formed groove of a grab bucket is limited due to the fact that the center distances of a drilling bucket and a continuous wall grab bucket of the rotary drilling rig with the continuous wall grab bucket function are the same in the prior art.

The utility model provides a rotary drilling rig, comprising:

a drill body;

a rotary digging construction method component;

a grapple assembly;

the pulley frame comprises a frame body, a first pulley and a second pulley, wherein the frame body is arranged at the top end of a mast of the drilling machine main body, and the first pulley and the second pulley are arranged on the frame body;

the pulley frame is wound with a steel wire rope, and the steel wire rope is connected with the rotary digging method assembly or the grab bucket assembly after sequentially bypassing the first pulley and the second pulley; a space for preventing mutual interference is reserved between the steel wire rope and the mast;

the position of the second pulley is adjustable along the length direction of the frame body.

According to the rotary drilling rig provided by the utility model, the frame body is provided with:

at least two mounting holes are distributed along the length direction of the frame body and are used for mounting the second pulley.

According to the rotary drilling rig provided by the utility model, the rotary drilling method assembly comprises the following steps:

the top end of the round drill rod is connected with the steel wire rope;

the drilling bucket is arranged at the bottom end of the round drill rod;

and the drill rod power head is used for driving the round drill rod to rotate, and is provided with a round hole matched with the round drill rod.

According to the present utility model, there is provided a rotary drilling rig, the grapple assembly comprising:

the top end of the square guide rod is connected with the steel wire rope;

the grab bucket is arranged at the bottom end of the square guide rod;

the guide rotating device is used for driving the square guide rod to rotate and is provided with a square hole matched with the square guide rod.

According to the rotary drilling rig provided by the utility model, the guiding and rotating device comprises:

the guide frame body is connected with the mast in a sliding manner;

the power head sleeve is rotationally connected with the guide frame body and is provided with the square hole;

the rotary driving device is arranged on the guide frame body and is used for driving the power head sleeve to rotate.

According to the utility model, the grab bucket comprises:

the grab bucket frame body is connected with the bottom end of the square guide rod;

the grab bucket body comprises two grab bucket petals, and the first ends of the two grab bucket petals are both in rotary connection with the grab bucket frame body;

and the grab bucket driving device is used for driving the two grab bucket petals to rotate so as to enable the second ends of the two grab bucket petals to be closed or separated.

According to the rotary drilling rig provided by the utility model, the grab bucket driving device comprises:

the two grab bucket oil cylinders are arranged on two opposite sides of the grab bucket frame body, and piston rods of the two grab bucket oil cylinders are respectively connected with the two grab bucket petals in a rotating mode.

According to the rotary drilling rig provided by the utility model, the grab bucket assembly further comprises:

the two rubber pipes are respectively connected with the two grab bucket oil cylinders;

the two pipe coiling devices are arranged on the guiding rotating device and are respectively used for coiling and uncoiling the two rubber pipes.

According to the rotary drilling rig provided by the utility model, the grab bucket further comprises:

the sliding block is connected with the grab bucket frame body in a sliding way;

the first ends of the two push-pull rods are rotationally connected with the sliding blocks, and the second ends of the two push-pull rods are rotationally connected with the two grab bucket petals respectively.

According to the rotary drilling rig provided by the utility model, the grab bucket assembly further comprises a limiting device for limiting the rotation angle of the power head sleeve.

The utility model provides a rotary drilling rig, which comprises a drilling rig main body, a rotary drilling method assembly, a grab bucket assembly and a pulley frame, wherein the pulley frame is arranged at the top end of a mast of the drilling rig main body, the pulley frame can comprise a frame body, a first pulley and a second pulley, the frame body is arranged at the top end of the mast, the first pulley and the second pulley are arranged on the frame body, a steel wire rope can be wound on the pulley frame, and the steel wire rope is connected with the rotary drilling method assembly or the grab bucket assembly after sequentially bypassing the first pulley and the second pulley, so that the rotary drilling method assembly and the grab bucket assembly are switched for use, and the rotary drilling rig can realize rotary drilling and continuous wall duplex methods.

And the position of the second pulley is adjustable along the length direction of the frame body, so that the center distance of the rotary digging construction method assembly or the grab bucket assembly can be adjusted, the center distances of the rotary digging construction method assembly and the grab bucket assembly are different when the two working devices are used for realizing the two construction methods, and the grooving width of the grab bucket assembly is not limited.

So set up, only need adjust the mounted position of second pulley, can satisfy the different demands to the scope of construction under the different worker's state, need not to change the pulley yoke, be favorable to reducing the manufacturing cost of rotary drilling rig.

Drawings

In order to more clearly illustrate the utility model or the technical solutions of the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the utility model, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a rotary drilling rig (the working device is a rotary drilling method component);

FIG. 2 is a schematic structural view of the rotary drilling rig (the working device is a grab bucket assembly) provided by the utility model;

FIG. 3 is one of the schematic structural views of the pulley frame provided by the present utility model (when the second pulley is mounted in the first mounting hole);

FIG. 4 is a second schematic diagram of the pulley frame according to the present utility model (when the second pulley is mounted in the second mounting hole);

FIG. 5 is a front view of the guide rotation device and the pipe reeling device of the rotary drilling rig provided by the utility model;

FIG. 6 is a cross-sectional view of a guide rotation device and a pipe reeling device of the rotary drilling rig provided by the utility model;

FIG. 7 is a top view of the guide rotation device and the pipe reeling device of the rotary drilling rig provided by the utility model;

fig. 8 is a schematic structural view of the grab provided by the utility model.

Reference numerals:

1. a drill body; 11. a mast; 2. a pulley frame;

21. a first pulley; 22. a frame body; 23. a second pulley;

24. a first mounting hole; 25. a second mounting hole; 26. a wire rope;

3. a rotary digging construction method component; 31. a circular drill rod; 32. a drill rod power head;

33. drilling bucket; 34. a rotary digging follow-up frame; 4. a grapple assembly;

41. square guide rod; 42. a guide rotating device; 43. a grab bucket;

44. a grab bucket follow-up frame; 45. a rubber tube; 46. a pipe coiling device;

421. a carriage; 422. a guide frame body; 423. a power head sleeve;

424. a rotation driving device; 425. a slewing bearing; 426. a limiting device;

461. a coil pipe disc; 462. a second motor; 431. a grab bucket frame body;

432. a connecting seat; 433. grab bucket segments; 434. grab bucket oil cylinder;

435. a slide block; 436. a push-pull rod; 437. and a sliding groove.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The rotary drilling machine of the present utility model is described below with reference to fig. 1 to 8.

As shown in fig. 1 and 2, the rotary drilling rig provided by the utility model comprises a drilling rig main body 1, a rotary drilling method assembly 3, a grab assembly 4 and a pulley frame 2.

Wherein the drill body 1 may comprise a chassis, an upper carriage rotatably arranged on the chassis, and a mast 11 arranged on the upper carriage.

The pulley frame 2 may be disposed at the top end of the mast 11 of the drill body 1, and the pulley frame 2 may include a frame 22, a first pulley 21 and a second pulley 23, the frame 22 being disposed at the top end of the mast 11, the first pulley 21 and the second pulley 23 being disposed on the frame 22.

In addition, the pulley frame 2 may be wound with a wire rope 26, and the wire rope 26 may be connected to the rotary working method assembly or the grab assembly 4 after passing around the first pulley 21 and the second pulley 23 in sequence. In this way, the rotary working method assembly and the grab assembly 4 can be switched to use, so that the rotary drilling rig can realize rotary drilling and continuous wall duplex operation.

In addition, along the length direction of the frame body 22, the position of the second pulley 23 is adjustable, so that the distance between the second pulley 23 and the mast 11 can be adjusted, and the center distance of the rotary digging method assembly 3 or the grab bucket assembly 4 can be adjusted, so that the center distances of the rotary digging method assembly 3 and the grab bucket assembly 4 are different when two working devices are used for realizing two methods, and the grooving width of the grab bucket assembly 4 is not limited.

Here, the second pulley 23 is detachably connected to the pulley frame 2 so as to adjust the position of the second pulley 23.

In addition, a space is reserved between the steel wire rope 26 and the mast 11, so that the steel wire rope 26 and the mast 11 are prevented from interfering with each other to influence the normal operation of the rotary drilling rig. Specifically, along the direction that the first pulley 21 is perpendicular to the length direction of the mast 11, a space is reserved between the first pulley 21 and the mast 11; along the direction that second pulley 23 is perpendicular to mast 11 length direction, leave the interval between second pulley 23 and the mast 11, like this, can guarantee through first pulley 21 and second pulley 23 that wire rope and the mast 11 of pulley yoke 2 both sides form certain space between to can avoid wire rope 26 and mast 11 to interfere each other, in order to guarantee that rotary drilling rig can normally work.

By adjusting the installation position of the second pulley 23 of the pulley frame 2, the center distance can be adjusted, so that different requirements on the construction range under different construction method states can be met; for example, when the rotary drilling rig needs to perform a rotary drilling method, the rotary drilling method component 3 is connected with the steel wire rope 26, and the installation position of the second pulley 23 is adjusted, so that the second pulley 23 is arranged close to the mast 11, and the requirement of the rotary drilling method for construction center distance is met; when the rotary drilling rig needs to perform the continuous wall construction method, the grab bucket assembly 4 is connected with the steel wire rope 26, and the installation position of the second pulley 23 is adjusted, so that the second pulley 23 is far away from the mast 11, and the increase of the center distance can be realized, thereby meeting the requirement of the continuous wall construction method on the large center distance. The two construction method requirements can be met only by adjusting the installation position of the second pulley 23, and the pulley frame 2 does not need to be replaced, so that the manufacturing cost of the rotary drilling rig is reduced.

In an alternative embodiment of the present utility model, the frame 22 may be provided with at least two mounting holes for mounting the second pulley 23; further, the mounting holes may be distributed along the length direction of the frame 22. Thus, by installing the second pulley 23 in different mounting holes, adjustment of the spacing between the second pulley 23 and the mast 11, and thus adjustment of the center distance of the rotary drilling method assembly 3 or the grapple assembly 4, can be achieved.

In this embodiment, as shown in fig. 3 and 4, the frame 22 may be provided with two mounting holes, which are a first mounting hole 24 and a second mounting hole 25, respectively, the first mounting hole 24 may be disposed close to the mast 11, and the second mounting hole 25 may be disposed away from the mast 11.

And, when the second pulley 23 is installed in the first installation hole 24, the installation of the rotary drilling method assembly 3 can be adapted, so that the distance between the second pulley 23 and the mast 11 meets the center distance requirement of the rotary drilling method assembly 3.

When the second pulley 23 is mounted in the second mounting hole 25, the mounting of the grapple assembly 4 can be adapted such that the spacing of the second pulley 23 from the mast 11 meets the center-to-center distance requirement of the grapple assembly 4.

Here, the second pulley 23 may be detachably connected to the mounting hole through a pin shaft.

In an alternative embodiment of the utility model, the rotary drilling method assembly 3 may comprise a round drill rod 31, a drill bucket 33 and a drill rod power head 32, wherein the top end of the round drill rod 31 may be connected with the wire rope 26, in particular the top end of the round drill rod 31 may be connected with the wire rope 26 by means of an elevator. The drilling bucket 33 may be disposed at a bottom end of the circular drill pipe 31, and the drill pipe power head 32 is used for driving the circular drill pipe 31 to rotate so as to drive the drilling bucket 33 to perform drilling operation.

Here, the drill rod power head 32 may be provided with a circular hole adapted to the circular drill rod 31. Thus, the drill rod power head 32 can drive the circular drill rod 31 to rotate.

In an alternative embodiment, the rotary drilling method assembly 3 may further include a rotary drilling follower 34, where one end of the rotary drilling follower 34 is slidably connected to the mast 11, and the other end of the rotary drilling follower 34 is rotatably connected to the circular drill pipe 31 through a bearing, so as to perform a guiding and supporting function on the circular drill pipe 31.

In an alternative embodiment of the utility model, as shown in FIG. 2, the grapple assembly 4 may include a square guide bar 41, a grapple 43, and a guide rotation device 42.

Wherein the tip of the square guide bar 41 may be connected to the wire rope 26, specifically, the tip of the square guide bar 41 may be connected to the wire rope 26 by an elevator.

A grab 43 may be provided at the bottom end of the square guide bar 41 to facilitate the grooving operation.

The guiding and rotating device 42 is used for driving the square guide rod 41 to rotate so as to drive the grab bucket 43 to rotate, thereby changing the direction of the grab bucket 43 and meeting the construction requirements of grooving and groove repairing at different angles.

Here, the guide rotation means 42 may be provided with square holes, which may be adapted to the square guide rods 41. Thus, the steering rotation device 42 can rotate the square drill rod.

So set up, connect grab bucket 43 through square guide arm 41 to make direction rotary device 42 and square guide arm 41 looks adaptation, when grabbing the groove construction, can improve radial spacing to grab bucket 43, can reduce or eliminate the rocking of grab bucket 43, the dual direction of grab bucket follow-up frame 44 and direction rotary device 42 has effectively improved the straightness that hangs down of grooving.

In an alternative embodiment, the grapple assembly 4 may further include a grapple follower 44, one end of the grapple follower 44 being slidably coupled to the mast 11, and the other end of the grapple follower 44 being rotatably coupled to the square guide 41 via a bearing to support and guide the square guide 41.

In an alternative embodiment of the present utility model, as shown in fig. 5-7, the guide rotation device 42 may include a guide frame 422, a power head sleeve 423, and a rotation driving device 424.

The guiding frame 422 can be slidably connected with the mast 11, the power head sleeve 423 can be rotatably connected with the guiding frame 422, and the power head sleeve 423 is provided with a square hole for fixing the square guide rod 41; the rotary driving device 424 can be arranged on the guide frame 422, and the rotary driving device 424 is used for driving the power head sleeve 423 to rotate so as to drive the square guide rod 41 to rotate, and the angle of the grab bucket 43 is adjusted, so that the grab bucket 43 meets the construction requirements of grooving and repairing grooves at different angles, and the multi-angle construction of the working device (namely the grab bucket 43) when the rotary drilling rig performs a continuous wall construction method is realized.

In an alternative embodiment, the guide frame 422 may be slidably coupled to the mast 11 of the rig body 1 by a carriage 421 to enable up and down movement of the guide frame 422 and thus the grapple assembly 4.

In an alternative embodiment, the power head sleeve 423 and the guide frame 422 may be rotatably connected through a slewing bearing 425, specifically, an outer ring of the slewing bearing 425 is mounted on the power head sleeve 423, an inner ring of the slewing bearing 425 is mounted on the guide frame 422, and the rotation driving device 424 drives the outer ring and the inner ring of the slewing bearing 425 to rotate relatively, so as to drive the power head sleeve 423 to rotate, thereby driving the square guide rod 41 passing through a square hole of the power head sleeve 423 to rotate, and realizing rotation of the grab bucket 43 mounted at the bottom end of the square guide rod 41.

In an alternative embodiment, the rotation driving device 424 may be a first motor that is mounted on the guide frame 422 and drives the outer ring of the pivoting support 425 to rotate.

In an alternative embodiment of the utility model, as shown in FIG. 8, the grapple 43 may include a grapple frame 431, a grapple body, and a grapple drive.

Wherein, grab bucket support body 431 can be connected with square guide arm 41's bottom, and the bucket body can include two grab bucket petals 433, and the first end of two grab bucket petals 433 all can rotate with grab bucket support body 431 to be connected, and the second end of two grab bucket petals 433 can be closed mutually or the separation to can carry out the grooving operation.

The grab bucket driving device is used for driving the two grab bucket petals 433 to rotate so as to enable the second ends of the two grab bucket petals 433 to be closed or separated. Thus, the grab 43 can be driven by the grab driving device to perform the trenching operation.

In an alternative embodiment, the grab frame 431 may be fixedly connected to the bottom end of the square guide bar 41 through a connection socket 432.

In an alternative embodiment, the grapple driving device may include two grapple cylinders 434, the two grapple cylinders 434 may be disposed at opposite sides of the grapple frame 431, and piston rods of the two grapple cylinders 434 may be rotatably connected with the two grapple petals 433, respectively. In this way, the two grab bucket petals 433 can be respectively driven to rotate by the extension and retraction of the piston rods of the two grab bucket cylinders 434, so that the second ends of the two grab bucket petals 433 can be closed or separated, and the grab bucket 43 can perform a trenching operation.

Here, the cylinders of the two grapple cylinders 434 may be fixedly connected with the grapple frame 431 by fixing bolts.

In an alternative embodiment, the grab 43 may further include a slider 435 and two push-pull rods 436, wherein the slider 435 may be slidably connected to the grab frame 431, a first end of each of the two push-pull rods 436 may be rotatably connected to the slider 435, and a second end of each of the two push-pull rods 436 may be rotatably connected to the two grab bucket petals 433, respectively. And, the second ends of the two push-pull rods 436 may be rotatably coupled to the two grapple cylinders 434, respectively.

When the piston rod of the grab bucket cylinder 434 extends out, the grab bucket petals 433 rotate downwards, the grab bucket cylinder 434 can drive the push-pull rod 436 to move downwards, and further the sliding block 435 is driven to slide downwards relative to the grab bucket frame 431, so that the grab bucket cylinder 434 and the push-pull rod 436 can both push the grab bucket petals 433 to push the second ends of the two grab bucket petals 433 to be closed, and the grab bucket 43 is closed;

when the piston rod of the grab bucket cylinder 434 is contracted, the grab bucket petals 433 are rotated upwards, the grab bucket cylinder 434 can drive the push-pull rod 436 to move upwards, and further the sliding block 435 is driven to slide upwards relative to the grab bucket frame 431, so that both the grab bucket cylinder 434 and the push-pull rod 436 can play a pulling role on the grab bucket petals 433, and the second ends of the two grab bucket petals 433 are pulled to be separated, and accordingly the grab bucket 43 is opened.

In an alternative embodiment, the grab frame 431 may be provided with a chute 437, the chute 437 being vertically disposed, and the slider 435 being slidably disposed within the chute 437 to achieve a sliding connection of the slider 435 with the grab frame 431.

Here, the chute 437 may be located at a middle position of the grab frame 431 to ensure the force balance of the two push-pull rods 436, thereby ensuring the force balance of the two grab bucket petals 433.

In an alternative embodiment of the present utility model, as shown in fig. 6, the grapple assembly 4 may further include two hoses 45, the two hoses 45 may be connected to the two grapple cylinders 434, respectively, and the two hoses 45 may be connected to a hydraulic system of the rotary drilling rig, such that the two grapple cylinders 434 may be supplied with hydraulic oil through the two hoses 45, respectively.

The grab bucket assembly 4 may further comprise two pipe reeling devices 46, and the two pipe reeling devices 46 may be used for respectively reeling and unreeling the two rubber pipes 45, so that the two rubber pipes 45 can be lifted and lowered synchronously with the grab bucket 43.

Also, the two pipe reeling devices 46 may be located at opposite sides of the guide rotating device 42, respectively, and in particular, the two pipe reeling devices 46 may be located at opposite sides of the power head sleeve 423, respectively, so that the oil supply or damage may be prevented from being affected by the twisting of the rubber pipe 45.

In an alternative embodiment, two hose reel units 46 may be disposed on the power head sleeve 423, such that rotation of the power head sleeve 423 may cause the two hose reel units 46 to rotate synchronously, thereby causing the two hoses 45 to rotate synchronously, so as to avoid damage to the hoses 45 due to twisting.

In an alternative embodiment, the hose reel 46 may include a hose reel 461 and a second motor 462, the hose reel 461 is rotatably mounted on the power head sleeve 423, the hose 45 is wound on the hose reel 461, and the second motor 462 is capable of driving the hose reel 461 to rotate, thereby driving the hose 45 to lift or lower with the forward and reverse directions of the hose reel 461, and further achieving synchronous up and down operation of the hose 45 with the square guide rod 41 and the grab 43.

It should be noted that, the first motor and the second motor 462 may be both deceleration motors.

In an alternative embodiment of the present utility model, the grapple assembly 4 may further include a limiting device 426, the limiting device 426 being used to limit the rotation angle of the power head sleeve 423.

In an alternative embodiment, the limiting device 426 may include a limiting block and a limiting stop, where the limiting block may be disposed on the power head sleeve 423, the limiting stop may be disposed on the guide frame 422, and the limiting block may be capable of abutting against the limiting stop.

Specifically, the limiting device 426 may include two limiting plates, and the positions of the two limiting plates may be set according to the angle actually required, for example, the grab 43 needs to rotate between 90 degrees, so that the included angle between the positions of the two limiting plates is 90 degrees.

In an alternative embodiment, the stop 426 may be an angle measurement device that measures the angle of rotation of the powerhead cartridge 423.

Here, the angle measuring device may be an infrared angle measuring device, or an angle sensor, or other devices capable of detecting an angle, and specifically, the angle measuring device is not limited, and only the rotation angle may be detected.

In an alternative embodiment, wear-resistant keys may be provided on the outer wall of the square guide bar 41 to improve the wear resistance of the square guide bar 41 and the vertical accuracy of the grooving.

The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present utility model without undue burden.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims (9)

1. A rotary drilling rig, comprising:

a drill body;

a rotary digging construction method component;

a grapple assembly;

the pulley frame comprises a frame body, a first pulley and a second pulley, wherein the frame body is arranged at the top end of a mast of the drilling machine main body, and the first pulley and the second pulley are arranged on the frame body;

the pulley frame is wound with a steel wire rope, and the steel wire rope is connected with the rotary digging method assembly or the grab bucket assembly after sequentially bypassing the first pulley and the second pulley; a space for preventing mutual interference is reserved between the steel wire rope and the mast;

along the length direction of support body, the position of second pulley is adjustable, be provided with two at least mounting holes on the support body, along the length direction distribution of support body, the mounting hole is used for installing the second pulley, wherein, the second pulley is installed in the difference in the mounting hole, the second pulley with the interval of mast is different, in order to realize different centre distances.

2. The rotary drilling machine of claim 1, wherein the rotary drilling method assembly comprises:

the top end of the round drill rod is connected with the steel wire rope;

the drilling bucket is arranged at the bottom end of the round drill rod;

and the drill rod power head is used for driving the round drill rod to rotate, and is provided with a round hole matched with the round drill rod.

3. The rotary drilling rig of claim 1, wherein the grapple assembly comprises:

the top end of the square guide rod is connected with the steel wire rope;

the grab bucket is arranged at the bottom end of the square guide rod;

the guide rotating device is used for driving the square guide rod to rotate and is provided with a square hole matched with the square guide rod.

4. A rotary drilling rig according to claim 3, wherein the pilot rotation means comprises:

the guide frame body is connected with the mast in a sliding manner;

the power head sleeve is rotationally connected with the guide frame body and is provided with the square hole;

the rotary driving device is arranged on the guide frame body and is used for driving the power head sleeve to rotate.

5. The rotary drilling machine of claim 3 or 4, wherein the grapple comprises:

the grab bucket frame body is connected with the bottom end of the square guide rod;

the grab bucket body comprises two grab bucket petals, and the first ends of the two grab bucket petals are both in rotary connection with the grab bucket frame body;

and the grab bucket driving device is used for driving the two grab bucket petals to rotate so as to enable the second ends of the two grab bucket petals to be closed or separated.

6. The rotary drilling rig of claim 5, wherein the grapple drive comprises:

the two grab bucket oil cylinders are arranged on two opposite sides of the grab bucket frame body, and piston rods of the two grab bucket oil cylinders are respectively connected with the two grab bucket petals in a rotating mode.

7. The rotary drilling rig of claim 6, wherein the grapple assembly further comprises:

the two rubber pipes are respectively connected with the two grab bucket oil cylinders;

the two pipe coiling devices are arranged on the guiding rotating device and are respectively used for coiling and uncoiling the two rubber pipes.

8. The rotary drilling rig of claim 5, wherein the grapple further comprises:

the sliding block is connected with the grab bucket frame body in a sliding way;

the first ends of the two push-pull rods are rotationally connected with the sliding blocks, and the second ends of the two push-pull rods are rotationally connected with the two grab bucket petals respectively.

9. The rotary drilling rig of claim 4, wherein the grapple assembly further comprises a stop device for limiting the angle of rotation of the power head sleeve.

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