阅读说明：本技术 一种复合式手摇麻花钻起拔工具及其钻进起拔方法 (Combined type hand-operated twist drill pulling tool and drilling pulling method thereof ) 是由 段谟东 许思龙 程铁洪 蔡冻 黄磊 张久龙 王海飞 于 2020-12-30 设计创作，主要内容包括：一种复合式手摇麻花钻起拔工具及其钻进起拔方法,复合式手摇麻花钻起拔工具至少包括可拆卸底座、带螺纹的空心钢管、固定钢钉、夹持结构、夹持结构控制开关把手、钢制手柄、钻杆和麻花钻；带螺纹的空心钢管通过固定钢钉与钢制手柄连接,带螺纹的空心钢管以钢钉为圆心绕钢制手柄上下转动,可拆卸底座与带螺纹的空心钢管螺纹连接；钢制手柄中部设置凹槽,钻杆上端通过夹持结构夹持设置于凹槽处,夹持结构控制开关把手用于控制夹持结构拧紧和松开；钻杆下端与麻花取钻焊接固定。本发明将钻进与起拔工艺结合使用,解决了传统麻花钻每次加钻杆时需要拆卸钻杆上部旋转装置的问题,降低钻进周期,节约大量人力,显著提高钻进效率和质量。(A combined hand-operated twist drill pulling tool and a drilling pulling method thereof are provided, the combined hand-operated twist drill pulling tool at least comprises a detachable base, a threaded hollow steel pipe, a fixed steel nail, a clamping structure control switch handle, a steel handle, a drill rod and a twist drill; the threaded hollow steel pipe is connected with the steel handle through a fixed steel nail, the threaded hollow steel pipe rotates up and down around the steel handle by taking the steel nail as a circle center, and the detachable base is in threaded connection with the threaded hollow steel pipe; the middle part of the steel handle is provided with a groove, the upper end of the drill rod is clamped and arranged at the groove through a clamping structure, and a clamping structure control switch handle is used for controlling the clamping structure to be screwed and loosened; the lower end of the drill rod is welded and fixed with the twist drill. The invention combines the drilling and pulling processes, solves the problem that the upper rotating device of the drill rod needs to be disassembled when the drill rod is added each time in the traditional twist drill, reduces the drilling period, saves a large amount of manpower, and obviously improves the drilling efficiency and quality.)

1. A combined type hand-operated twist drill pulling tool is characterized by at least comprising a detachable base (1), a threaded hollow steel pipe (2), a fixed steel nail (3), a clamping structure (4), a clamping structure control switch handle (5), a steel handle (6), a drill rod (8) and a twist drill (9); the threaded hollow steel pipe (2) is hinged with the steel handle (6) through the fixed steel nail (3), the threaded hollow steel pipe (2) rotates up and down around the steel handle (6) by taking the fixed steel nail (3) as a circle center, and the detachable base (1) is in threaded connection with the threaded hollow steel pipe (2); a groove is formed in the middle front part of the steel handle (6), the upper end of the drill rod (8) is clamped and arranged in the groove in the middle front part of the steel handle (6) through a clamping structure (4), and a clamping structure control switch handle (5) is used for controlling the clamping structure (4) to be screwed and loosened; the lower end of the drill rod (8) is fixed with the twist drill (9) through welding.

2. The combined type hand twist drill extraction tool according to claim 1, wherein during the drilling and soil taking process of the tool, the threaded hollow steel pipe (2) is placed horizontally, the threaded hollow steel pipe (2) and the steel handle (6) are both used as handles, and field workers hold the steel handle (6) and the threaded hollow steel pipe (2) at two sides to rotate; when the tool is drilled to a certain depth and needs to be pulled out, the detachable base (1) is connected with the hollow steel pipe (2), and the detachable base (1) is taken as a fulcrum to be pulled out by rotating the threaded hollow steel pipe (2) to be vertical to the ground.

3. The composite hand twist drill extraction tool according to claim 1, further comprising a mating drill stem (10), wherein as the drilling process progresses, when the height of the drill stem (8) above the ground is insufficient, the mating drill stem (10) is directly connected to the drill stem (8) by a screw thread.

4. A combined hand twist drill extraction tool according to claim 1, wherein the length of the steel handle (6) is 4-6 times the distance between the fixed steel nails (3) at the front end of the steel handle (6) and the clamping structure (4).

5. A composite hand twist drill extraction tool according to claim 1, further comprising a hollow sleeve (7), the hollow sleeve (7) being inserted into the steel handle (6) for increasing the moment arm length.

6. A drilling and pulling method of the combined type hand-operated twist drill pulling tool as claimed in claims 1 to 5, characterized by comprising the following steps:

1) in the drilling and soil taking process, the threaded hollow steel pipe (2) is placed horizontally, the threaded hollow steel pipe (2) and the steel handles (6) are used as handles, field workers hold the steel handles (6) on two sides and the threaded hollow steel pipe (2) to rotate, and a drill rod (8) drives a twist drill (9) to rotate for drilling; when the height above the ground of the drill rod (8) is not enough, the matched drill rod (10) is directly connected with the drill rod (8) through a screw thread along with the deepening of the drilling process of the drill rod (8);

2) when the drill bit is drilled to a certain depth and needs to be pulled out, the threaded hollow steel pipe (2) is rotated to be vertical to the ground by taking the fixed steel nail (3) as a circle center, the threaded hollow steel pipe (2) is connected with the detachable base (1), and the detachable base (1) is used as a fulcrum to be pulled out;

3) in the pulling process, the clamping structure (4) and the drill rod (8) are tightly occluded by controlling the switch handle (5) of the clamping structure, and after the adjustment is finished, a field operator lifts upwards through the steel handle (6) to pull;

4) after the drill bit at the bottom of the hole is pulled up and loosened, the clamping structure is controlled to control the switch handle (5) to loosen the clamping structure (4), and the drill rod (8) is manually lifted out; if the drill bit is loosened after the bottom of the hole is pulled up, the manual pulling up is still difficult, and the clamping structure is readjusted to control the switch handle (5) to finish the continuous pulling up.

7. The method for pulling up a composite hand twist drill according to claim 6, wherein in step 3), a hollow sleeve (7) is inserted into the steel handle (6) to adjust the length of the force arm, in consideration of the insufficient pulling force caused by some special conditions.

Technical Field

The invention relates to the technical field of geotechnical engineering investigation and drilling of power transmission lines, in particular to a combined type hand-operated twist drill pulling tool and a drilling pulling method thereof.

Background

The geotechnical engineering investigation of the power transmission line is an important component of the investigation in the power industry, wherein the stability of a tower of the power transmission line is a basic condition for ensuring the normal operation of the overhead power transmission line, factors such as the landform and the landscape where the tower is preset, the type of the tower, the required foundation depth, the drilling cost and the like are comprehensively considered, and the most widely used drilling tool is still the most original hand-operated twist drill in the geotechnical engineering investigation of the power transmission line at present.

In actual drilling operation, along with the increase of drilling depth and the change of underground soil layer strength, sometimes after a twist drill bit carries soil, the drill rod is difficult to pull up, sometimes even 3-4 people cannot pull up, the drill rod has to be rotated in the opposite direction, and in the drilling process, when the drill rod needs to be increased, the upper rotating structure needs to be disassembled, and then the drill rod is assembled. Therefore, the drilling period is prolonged, a large amount of manpower is consumed, and after the soil turns reversely, the soil structure is seriously disturbed, so that field workers can misjudge the soil property, and the provided data is deviated.

Disclosure of Invention

The invention aims to solve the technical problem that the existing hand-operated twist drill is difficult to pull in the drilling process, and provides a combined hand-operated twist drill pulling tool and a drilling pulling method thereof.

The technical scheme adopted by the invention for solving the technical problems is as follows:

a combined hand-operated twist drill pulling tool at least comprises a detachable base, a threaded hollow steel pipe, a fixed steel nail, a clamping structure control switch handle, a steel handle, a drill rod and a twist drill; the threaded hollow steel pipe is hinged with the steel handle through a fixed steel nail, the threaded hollow steel pipe rotates up and down around the steel handle by taking the steel nail as a circle center, and the detachable base is in threaded connection with the threaded hollow steel pipe; the middle front part of the steel handle is provided with a groove, the upper end of the drill rod is clamped and arranged at the groove of the middle front part of the steel handle through a clamping structure, and a clamping structure control switch handle is used for controlling the clamping structure to be screwed and loosened; the lower end of the drill rod is fixed with the twist drill through welding.

According to the scheme, the threaded hollow steel pipe is horizontally placed in the earth taking process of the tool drilling, the threaded hollow steel pipe and the steel handle are both used as handles (the functions are consistent), and field workers hold the steel handles on two sides and the threaded hollow steel pipe to rotate; when the tool is drilled to a certain depth and needs to be pulled out, the detachable base is connected with the threaded hollow steel pipe, and the detachable base is pulled out by rotating the threaded hollow steel pipe to be perpendicular to the ground and taking the detachable base as a fulcrum.

According to above-mentioned scheme, still including supporting drilling rod, along with boring the process deepening, when the drilling rod is high more than the ground when not enough, directly be connected supporting drilling rod with the drilling rod through the screw thread (solved the problem that traditional twist drill need dismantle drilling rod upper portion rotary device when adding the drilling rod at present stage every time).

According to the scheme, the length of the steel handle is 4-6 times of the distance between the steel nail at the front end of the handle and the clamping structure, namely 5 times of labor is saved.

According to the scheme, the device also comprises a hollow sleeve, and the hollow sleeve is inserted into the steel handle and used for increasing the length of the force arm.

The initial calculation shows that the pulling force basically meets the requirements of field operation, but in consideration of some special conditions, a hollow sleeve is configured, and the steel handle can be designed into a pulling structure to adjust the length of the force arm. Through the design of the clamping structure, the device has the function of continuous pulling.

The invention also provides a drilling and pulling method of the combined type hand-operated twist drill pulling tool, which comprises the following steps:

1) in the drilling and soil taking process, the threaded hollow steel pipe is placed horizontally, the threaded hollow steel pipe and the steel handles are both used as handles, field workers hold the steel handles on two sides and the threaded hollow steel pipe to rotate, and a drill rod drives a twist drill to rotate for drilling; when the height above the ground of the drill rod is not enough, the matched drill rod is directly connected with the drill rod through a screw thread;

2) when the drill bit needs to be pulled out after drilling to a certain depth, the threaded hollow steel pipe is rotated to be vertical to the ground by taking the fixed steel nail as a circle center, the threaded hollow steel pipe is connected with the detachable base, and the detachable base is used as a fulcrum to be pulled out;

3) in the pulling process, the switch handle is controlled to tightly engage the clamping structure and the drill rod by controlling the clamping structure, and after the adjustment is finished, a field operator lifts upwards through the steel handle to pull;

4) after the drill bit at the bottom of the pull-out hole is loosened, the clamping structure is controlled to control the switch handle to loosen the clamping structure, and the drill rod is manually pulled out (the pull-out speed is increased); if the drill bit is loosened after the bottom of the hole is pulled up, the manual pulling up is still difficult, the clamping structure can be readjusted to control the switch handle, and the continuous pulling up is completed.

According to the scheme, in the step 3), when the pulling force is insufficient due to some special conditions, a hollow sleeve is inserted into the steel handle, and the length of the force arm is adjusted.

Compared with the prior art, the invention has the beneficial effects that:

1. the hand-operated twist drill drilling and pulling processes are combined for use, the combined tool has the functions of drilling and continuous pulling, soil can be taken for drilling, whether the continuous pulling function is required or not can be selected by combining with the actual soil layer condition, the drilling period is shortened, a large amount of manpower is saved, the drilling efficiency and the drilling quality can be obviously improved, and the tool is simple to operate and convenient to carry and has a better market application prospect;

2. the drilling process still selects a static pressure rotation method of the traditional twist drill, the pulling process occludes the drill rod through the clamping structure and utilizes the lever principle to pull, along with the deepening of the drilling process, when the height of the drill rod above the ground is not enough, the matched drill rod can be directly connected with the drill rod, and the problem that the upper rotating device of the drill rod needs to be detached when the drill rod is added to the traditional twist drill at the current stage every time is solved.

Drawings

FIG. 1 is a schematic view of a drilling process of a combined hand twist drill extraction tool according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a combined type hand twist drill extraction tool in the extraction process according to an embodiment of the present invention;

in the figure, 1-a detachable base, 2-a threaded hollow steel pipe, 3-a fixed steel nail, 4-a clamping structure, 5-a clamping structure control switch handle, 6-a steel handle, 7-a hollow sleeve, 8-a drill rod, 9-a twist drill and 10-a matched drill rod.

Detailed Description

The technical scheme of the invention is described in detail in the following with reference to the attached drawings and examples.

Referring to fig. 1-2, the combined hand twist drill pulling tool comprises a detachable base 1, a threaded hollow steel pipe 2, a fixed steel nail 3, a clamping structure 4, a clamping structure control switch handle 5, a steel handle 6, a hollow sleeve 7, a drill rod 8, a twist drill 9 and a matched drill rod 10; the threaded hollow steel pipe 2 is connected with a steel handle 6 through a fixed steel nail 3, the threaded hollow steel pipe 2 can rotate up and down around the steel handle 6 by taking the steel nail 3 as a circle center, the detachable base 1 is in threaded connection with the threaded hollow steel pipe 2, the detachable base 1 is connected with the hollow steel pipe 2 when pulling is needed, the threaded hollow steel pipe 2 is perpendicular to the ground through rotation, and the detachable base 1 is used as a fulcrum to pull; the middle front part of the steel handle 6 is provided with a groove for connecting the clamping structure 4, the upper end of the drill rod 8 is clamped and arranged at the groove of the middle front part of the steel handle 6 through the clamping structure 4, and the clamping structure control switch handle 5 is used for controlling the clamping structure 4 to be screwed and loosened; the hollow sleeve 7 can be inserted into a steel handle 6 and is used for increasing the length of the force arm if necessary; the lower end of the drill rod 8 is fixed with the twist drill 9 by welding, and the matched drill rod 10 is connected with the drill rod 8 by screw threads.

According to actual requirements, the steel handle 6 can be designed into a drawing structure, and the length of the force arm can be adjusted.

According to actual requirements, the hollow steel tube 2 can be designed into a multi-section pulling mode and fixed by bolts, and the height of the composite tool can be adjusted.

The drilling and pulling method of the combined type hand-operated twist drill pulling tool provided by the embodiment of the invention specifically comprises the following steps:

1) in the drilling and soil taking process, the threaded hollow steel pipe 2 is placed horizontally to achieve the same function as the steel handle 6, the two sides of the handle can be held by hands to rotate, and the drill rod 8 drives the twist drill 9 to rotate for drilling; along with the deepening of the drilling process of the drill rod 8, when the height of the drill rod 8 above the ground is not enough, the matched drill rod 10 can be directly connected with the drill rod 8 through a screw thread, and the problem that a rotating device at the upper part of the drill rod needs to be disassembled when the drill rod is added to the traditional twist drill at each time at the present stage is solved;

2) when the drill bit needs to be pulled out after drilling to a certain depth, the threaded hollow steel pipe 2 is rotated to be vertical to the ground by taking the fixed steel nail 3 as a circle center, the threaded hollow steel pipe 2 is connected with the detachable base 1, and the detachable base 1 is used as a fulcrum to be pulled out;

3) in the pulling process, the clamping structure 4 and the drill rod 8 are tightly occluded by controlling the clamping structure control switch handle 5, after the adjustment is finished, a field operator lifts upwards through the steel handle 6 to pull, the length of the steel handle 6 is designed to be about 5 times of the distance between the steel nail 3 at the front end of the handle and the clamping structure 4 at present, namely 5 times of labor is saved, the pulling force can basically meet the requirements of field operation through preliminary calculation, but a hollow sleeve 7 is configured in consideration of some special conditions, the steel handle 6 can also be designed into a pulling structure to adjust the length of the force arm, and the equipment has the continuous pulling function through the design of the clamping structure;

4) after the drill bit at the bottom of the pulling hole is loosened, the clamping structure can be controlled to control the switch handle 5 to loosen the clamping structure 4, the drill rod 8 is manually lifted, and the pulling rate is increased; if the drill bit is loosened after the bottom of the hole is pulled up and pulled out, the manual pulling up and pulling out is still difficult, the clamping structure can be readjusted to control the switch handle 5, the operation is repeated, and the continuous pulling up and pulling out is carried out until one-time operation is completed.

The combined tool has the functions of drilling and continuous pulling, and solves the problem that a rotating device at the upper part of a drill rod needs to be disassembled when the drill rod is added to the traditional twist drill each time.

It should be understood that the above examples are only for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Obvious variations or modifications to the present invention, which would be apparent to a person of ordinary skill in the art, would nevertheless fall within the scope of the present invention.