Device for cleaning soil on drill rod of long spiral drilling machine

Abstract

The utility model relates to the technical field of long spiral drilling machines, in particular to a device for cleaning soil on a drilling rod of a long spiral drilling machine, which aims to solve the problem of cleaning the soil on the drilling rod of the long spiral drilling machine and comprises an air compressor mounted on a drilling machine body, and a drilling rod is arranged at the front end of the drilling machine body. The output end of the air compressor is connected with a breather pipe, the output end of the breather pipe is connected with a jet head, a valve is arranged on the breather pipe, the jet head is located at the lower end of the guide rail and arranged close to and spaced from a rod body of the drill rod, and an air outlet of the jet head points to the rod body of the drill rod. In the lifting process of the drill rod, high-pressure air sprayed out of the air spraying head makes contact with the drill rod, soil attached to the drill rod falls off immediately, along with lifting and rotating of the drill rod, the whole drill rod can be rapidly and thoroughly cleaned, the overall structure is simple, operation is convenient, the soil cleaning efficiency and quality are improved, and the potential safety hazard that the drill rod carries the soil to fall at a high position is eliminated.

Description

Technical Field

[0001] The utility model relates to the technical field of long spiral drilling machines, in particular to a device for cleaning mud from a drill rod of a long spiral drilling machine. Background Art

[0002] Long spiral drilling rigs are widely used in pile foundation construction in silty soil, thick loess layers, gravel layers and other strata. They have the characteristics of high construction efficiency, fast pile formation, less sediment at the bottom of the pile, less concrete waste and higher pile quality. However, during the construction process, the drill rod brings out a large amount of soil when it is lifted. Due to the squeezing of the drill rod during drilling, it is difficult for the soil to separate from the drill rod, thus affecting the construction efficiency. If the soil is not cleaned in time, it poses a great safety hazard.

[0003] In order to improve construction efficiency and eliminate potential safety hazards, two construction workers are usually arranged during the construction process to use shovels or other tools to clean the soil. However, manual operation to remove soil is inefficient, time-consuming, labor-intensive, and dangerous. It often happens that the soil that is not cleaned up is lifted to a high place with the drill rod, and the soil falls and injures the workers due to the failure to clean up the soil in time or incompletely. There are also schemes that use a motor in conjunction with a pulley and a rotating disk for cleaning (such as the automatic mud cleaning device for a long screw pile-driving drilling rig disclosed in CN201020279374.9), but the lifting speed of the drill rod needs to be adapted to the rotation speed of the mud cleaning, so the cleaning is not clean, and the mud will cause the pulley to jam, and the motor failure rate is high. Therefore, there is an urgent need for a simple, efficient, safe, and intelligent device to solve the problem of cleaning the soil with the drill rod of a long spiral drilling rig. Summary of the invention

[0004] The utility model provides a device for cleaning mud from a drill rod of a long spiral drill, which is convenient for quickly and effectively cleaning mud from the drill rod of the long spiral drill.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solution:

[0006] A device for cleaning mud from a drill rod of a long spiral drill comprises an air compressor installed on a drill rig body, a vertically arranged guide rail is provided at the front end of the drill rig body, a drill rod seat is provided on the guide rail, a drill rod with a vertically arranged rod body is installed at the lower end of the drill rod seat, a drill bit is provided at the bottom end of the drill rod, an air compressor is provided on the drill rig body, a vent pipe is connected to the output end of the air compressor, a jet head is connected to the output end of the vent pipe, a valve is provided on the vent pipe, the jet head is located at the lower end of the guide rail and is arranged adjacent to the rod body of the drill rod, and an air outlet of the jet head points to the rod body of the drill rod.

[0007] Furthermore, a pipe head is provided at the output end of the ventilation pipe, and the air injection head includes a sleeve, which is sleeved on the circumferential surface of the pipe head and arranged coaxially with the pipe head. The output end of the sleeve is connected to an air nozzle, and the interiors of the ventilation pipe, the pipe head, the sleeve and the air nozzle are connected in sequence, and the sleeve and the pipe head form a snap-fit ​​fit.

[0008] Furthermore, the air outlet of the air jet head is directed obliquely downward or is arranged perpendicular to the core direction of the drill pipe.

[0009] Furthermore, the spray head and the output end of the ventilation pipe are detachably arranged.

[0010] Furthermore, the outer circumferential surface of the tube head is tightly fitted with the inner circumferential surface of the sleeve and a sealing ring is arranged between the two. An annular groove coaxial with the tube head is provided on the outer circumferential surface of the tube head, and a sliding groove is provided on the inner circumferential surface of the sleeve along the radial direction of the sleeve. A locking block is provided inside the sliding groove and a dynamic connection is formed between the two. When one end of the locking block adjacent to the tube head is pressed into the inside of the annular groove and contacts with the wall of the annular groove, a spring is connected between the other end of the locking block and the opposite side of the sliding groove, and a pull ring movably sleeved on the outer circumferential surface of the sleeve is connected to the side of the locking block adjacent to the spring through a pull rope.

[0011] Furthermore, a slope is arranged on the end surface of the locking block adjacent to the pipe head, the slope faces the pipe opening on the sleeve away from the air nozzle and the slope is adjacent to the edge of the slide groove and is located inside the slide groove.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The utility model starts the start-stop switch of the air compressor during the drilling rod lifting process, and the generated high-pressure air flow passes through the ventilation pipe and the high-pressure gas is sprayed out by the nozzle. The high-pressure gas contacts the drilling rod, and the mud attached to the drilling rod falls off immediately. As the drilling rod is lifted and rotated, the entire drilling rod can be quickly cleaned. The overall structure is simple and the operation is convenient, which improves the construction efficiency and quality and eliminates the safety hazard of the drilling rod carrying mud and falling from a height.

[0014] The spray head and the output end of the ventilation pipe of the utility model are detachably arranged, and the spray head can be conveniently replaced in consideration of the complex construction environment and the possibility of damage and blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the jet head;

[0017] Figure 3 This is a schematic diagram of the connection position between the jet head and the vent pipe;

[0018] Figure 4This is a schematic diagram showing the separation of the jet head and the vent pipe;

[0019] Figure 5 It is a cross-sectional view of the connection state between the nozzle and the ventilation pipe.

[0020] The meanings of the accompanying numbers are as follows: 1. drilling rig body; 2. guide rail; 3. drill rod seat; 4. drill rod; 41. drill bit; 5. air compressor; 6. ventilation pipe; 61. valve; 62. pipe head; 621. annular groove; 7. jet head; 71. casing; 72. air nozzle; 711. slide groove; 712. locking block; 713. spring; 714. pull ring; 715. pull rope; 80. sealing ring. DETAILED DESCRIPTION

[0021] The utility model will be further described below in conjunction with the accompanying drawings.

[0022] like Figure 1-5 As shown, a device for cleaning mud from a drill rod of a long spiral drilling rig is provided, a vertically arranged guide rail 2 is provided at the front end of a drilling rig body 1, a drill rod seat 3 is provided on the guide rail 2, a drill rod 4 with a vertically arranged rod body is movably mounted at the lower end of the drill rod seat 3 (the drill rod seat 3 can move up and down along the guide rail 2 under the drive of the long spiral drilling rig power mechanism, and the drill rod 4 can rotate, this part is the prior art, and is the conventional technology of the long screw drilling rig), a drill bit 41 is provided at the bottom end of the drill rod 4, an air compressor 5 is provided on the drilling rig body 1, an output end of the air compressor 5 is connected to a vent pipe 6, an output end of the vent pipe 6 is connected to a jet head 7, a valve 61 is provided on the vent pipe 6, the jet head 7 is located at the lower end of the guide rail 2 and is close to the rod body of the drill rod 4, the two are arranged at an interval, and the air outlet of the jet head 7 points to the rod body of the drill rod 4.

[0023] During the lifting process of the drill rod 4, the start-stop switch of the air compressor 5 is turned on, and the high-pressure airflow generated passes through the vent pipe 6 and the high-pressure gas is ejected by the nozzle 7. The high-pressure gas contacts the drill rod 4, and the soil attached to the drill rod 4 falls off immediately. When the drill rod seat 3 moves upward along the guide rail 2, as the drill rod 4 is lifted and rotated, the high-pressure gas ejected by the nozzle 7 can quickly clean the entire drill rod 4. The overall structure is simple and easy to operate, and the soil cleaning efficiency and cleaning quality are improved.

[0024] In order to ensure that the high-pressure gas ejected from the nozzle 7 effectively acts on the soil on the drill rod 4, the direction of the nozzle outlet of the nozzle 7 is obliquely downward or perpendicular to the rod core direction of the drill rod 4 (the position of the end of the vent pipe 6 can be limited by the air pipe mounting seat fixed at the lower part of the guide rail 2, and then the position of the nozzle 7 can be limited. This is a prior art and will not be described in detail). By setting the direction of the nozzle outlet of the nozzle 7, the soil blown off the drill rod 4 by the high-pressure gas will not splash, which is convenient for subsequent cleaning.

[0025] The nozzle 7 and the output end of the vent pipe 6 are detachably arranged, and a pipe head 62 is provided at the output end of the vent pipe 6. The nozzle 7 includes a sleeve 71, which is sleeved on the circumference of the pipe head 62 and arranged coaxially with the pipe head 62. The output end of the sleeve 71 is connected with a gas nozzle 72. The interiors of the vent pipe 6, the pipe head 62, the sleeve 71, and the gas nozzle 72 are sequentially connected, and the sleeve 71 and the pipe head 62 form a snap fit. By snapping, the nozzle 7 and the vent pipe 6 can be quickly connected, which is convenient and quick to install.

[0026] As a preferred embodiment, the outer circumference of the tube head 62 is tightly fitted with the inner circumference of the sleeve 71 and a sealing ring 8 is arranged therebetween. An annular groove 621 coaxial with the tube head 62 is provided on the outer circumference of the tube head 62, and a slide groove 711 is provided on the inner circumference of the sleeve 71 along the radial direction of the sleeve 71. A locking block 712 is arranged inside the slide groove 711 and a dynamic connection is formed between the two. One end of the locking block 712 adjacent to the tube head 62 presses into the inside of the annular groove 621 and cooperates with the groove wall of the annular groove 621. A spring 713 is connected between the other end of the locking block 712 and the opposite side of the slide groove 711. A pull ring 714 movably sleeved on the outer circumference of the sleeve 71 is connected to the side of the locking block 712 adjacent to the spring 713 by a pull rope 715. The locking block 712 is pressed against the inside of the annular groove 621 to limit the relative displacement of the sleeve 71 and the tube head 62 in the tube core direction. Under the elastic force of the spring 713, the locking block 712 is stably pressed against the inside of the annular groove 621, thereby connecting and fixing the sleeve 71 and the tube head 62. When the air jet head 7 needs to be replaced, the pull ring 714 can be pulled to drive the locking block 712 to move inside the slide groove 711 along the radial direction of the sleeve 71 through the pull rope 715, and the locking block 712 can be further completely separated from the annular groove 621, and the fixing effect between the sleeve 71 and the tube head 62 is lost, so that the sleeve 71 and the air nozzle 72 can be removed from the tube head 62 to realize the disassembly of the air jet head 7. On the contrary, by controlling the locking block 712 to move inside the slide groove 711 , when the sleeve 71 is sleeved on the pipe head 62 , the locking block 712 is pressed into the inside of the annular groove 621 , thereby realizing the connection between the sleeve 71 and the pipe head 62 .

[0027] Furthermore, a bevel is provided on the end surface of the locking block 712 near the tube head 62, the bevel faces the tube opening of the sleeve 71 away from the air nozzle 72, and the bevel is close to the edge of the slide groove 711 and is located inside the slide groove 711. When the air jet head 7 is connected to the tube head 62, the tube head 62 is inserted into the tube cavity of the sleeve 71. During the process, the outer edge of the port of the tube head 62 will be pressed against the bevel of the locking block 712. The bevel of the locking block 712 is pressed to force the locking block 712 to move naturally into the slide groove 711, so that the protruding part of the locking block 712 will not affect the insertion process of the tube head 62. As the tube head 62 is inserted, the annular groove 621 is opposite to the locking block 712. Under the elastic force of the spring 713, the locking block 712 automatically presses into the inside of the annular groove 621, thereby limiting the relative displacement of the sleeve 71 and the tube head 62 in the direction of the tube core, and the connection between the nozzle 7 and the ventilation pipe 6 is more convenient and quick.

Claims

1. A device for cleaning mud from a long spiral drilling rod, comprising an air compressor (5) mounted on a drilling rig body (1), a drilling rod (4) being arranged at the front end of the drilling rig body (1), characterized in that: The output end of the air compressor (5) is connected to a vent pipe (6), and the output end of the vent pipe (6) is detachably connected to a nozzle (7). The vent pipe (6) is provided with a valve (61), and the air outlet of the nozzle (7) points to the shaft of the drill pipe (4). The output end of the vent pipe (6) is provided with a pipe head (62), and the nozzle (7) comprises a sleeve (71), which is sleeved on the pipe head (62) and arranged coaxially with the pipe head (62). The output end of the sleeve (71) is connected to an air nozzle (72), and the sleeve (71) and the pipe head (62) form a snap fit.

2. A device for cleaning mud from a long spiral drilling rod according to claim 1, characterized in that: The air outlet of the air jet head (7) points in a direction obliquely downward or perpendicular to the core direction of the drill rod (4).

3. A device for cleaning mud from a long spiral drilling rod according to claim 1 or 2, characterized in that: The outer circumference of the tube head (62) is tightly fitted with the inner circumference of the sleeve (71) and a sealing ring (8) is arranged therebetween. An annular groove (621) coaxial with the tube head (62) is provided on the outer circumference of the tube head (62). A slide groove (711) is provided on the inner circumference of the sleeve (71) along the radial direction of the sleeve (71). A locking block (712) is arranged inside the slide groove (711). One end of the locking block (712) adjacent to the tube head (62) is pressed into the inside of the annular groove (621) and contacts the groove wall of the annular groove (621). A spring (713) is connected between the other end of the locking block (712) and the opposite side of the slide groove (711). A pull ring (714) movably sleeved on the outer circumference of the sleeve (71) is connected to the side of the locking block (712) adjacent to the spring (713) via a pull rope (715).

4. A device for cleaning mud from a long spiral drilling rod according to claim 3, characterized in that: The locking block (712) is provided with an inclined surface on its end surface adjacent to the pipe head (62), the inclined surface facing the pipe opening side of the sleeve (71) away from the air nozzle (72), and the edge of the inclined surface adjacent to the slide groove (711) is located inside the slide groove (711).

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