A geotechnical layer drilling apparatus

Abstract

The utility model relates to the technical field of geotechnical engineering drilling equipment, concretely to a kind of geotechnical layer drilling equipment, comprising: mobile frame, jacking cylinder, power box, drilling derrick and power source, and the bottom end of drilling derrick is equipped with locating plate, the top surface of locating plate is equipped with retainer, the side surface of locating plate is equipped with several dust baffle, dust baffle is obliquely arranged and encloses a closed space, and the top surface of retainer and dust baffle assembly is equipped with spray dust-settling component.The utility model, utilize dust baffle cooperation retainer, block vertically and obliquely fly out stone and dust, reduce the diffusion area of dust and stone, and reduce the risk brought by flying stone, conveniently clean up accumulation;By setting spray dust-settling component, utilize spray water, reduce dust diffusion, while spray above retainer, can reduce dust from retainer gap fly out;Dust baffle can also block mud, soil block and so on, reduce pollutant diffusion.

Description

Technical Field

[0001] This utility model relates to the technical field of drilling equipment for geotechnical engineering, specifically to a drilling equipment for geotechnical strata. Background Technology

[0002] In drilling operations in rock and soil layers, especially when using compressed air for dry drilling, a large amount of dust and rock fragments are ejected from the borehole when drilling in hard rock layers. Under the action of compressed air, these dust and rock fragments have a high initial velocity and spread and fly a long distance, which can cause serious dust pollution near the drilling rig. In addition, the high-speed flying rocks may injure equipment or personnel.

[0003] In existing technologies, a retainer is typically installed at the bottom of the drilling frame to keep the drill rod vertical and prevent vertically ejected rocks. However, this method cannot prevent dust and rocks that fly out at an angle.

[0004] Some equipment attempts to reduce dust pollution by adding independent dust removal devices. However, independent dust removal devices cannot handle high-speed flying gravel, and when they encounter mud layers, the flying mud will clog the dust removal devices. Therefore, they have a narrow range of applications and are not very practical. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a drilling device for rock and soil layers.

[0006] The technical solution of this utility model is:

[0007] A drilling device for soil and rock formations, comprising:

[0008] The system includes a mobile frame, a lifting cylinder, a power box, a drilling frame, and a power source. The power source is used to connect the drill rod and drill bit and drive them to rotate to achieve drilling. The bottom of the drilling frame is equipped with a positioning plate, the top surface of the positioning plate is equipped with a retainer, and the sides of the positioning plate are equipped with several dust baffles. The dust baffles are inclined and form a closed space. The top surface of the retainer and the dust baffle assembly is equipped with a spray dust suppression assembly.

[0009] Preferably, the positioning plate has a through hole in the center for the drill bit to pass through, and the positioning plate has a rotating frame on the side, and the dust baffle is rotatably connected to the rotating frame by a pin.

[0010] Preferably, the top surface of the positioning plate is provided with a guide plate, and the retainer is slidably installed between the guide plates. There are two retainers in total, and the two retainers are provided with semi-circular grooves on opposite sides.

[0011] Preferably, a limiting block is provided on the inner side of the top of the dust baffle, and the top surface of the limiting block abuts against the bottom surface of the positioning plate to limit the rotation angle of the dust baffle.

[0012] Preferably, there are at least four dust baffles, each dust baffle having an angle of 45-60° with the ground, and when the top surface of the limiting block abuts against the bottom surface of the positioning plate, the edges of two adjacent dust baffles abut against each other.

[0013] Preferably, the dust suppression spraying assembly includes a water tank located on a mobile frame for holding spraying water, and the water tank is connected to a spraying pump.

[0014] Preferably, the dust suppression spray assembly further includes a first spray pipe and a second spray pipe, the first spray pipe and the second spray pipe are respectively located on the top surface of the dust baffle and the retainer and are connected to the spray pump, and the first spray pipe and the second spray pipe are provided with a plurality of dust suppression nozzles.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention utilizes a dust baffle plate in conjunction with a retainer to shield vertically and obliquely flying stones and dust, reducing the area of ​​dust and stone diffusion and mitigating the risk posed by flying stones, thus facilitating the cleaning of accumulated materials. By incorporating a dust suppression spray system, water spray is used to reduce dust diffusion, while spraying water above the retainer further reduces dust escaping from the retainer's gaps. The dust baffle plate can also shield mud, soil, and other contaminants, reducing their spread. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 for Figure 1 Enlarged schematic diagram of the structure at point A in the middle;

[0019] Figure 3 This is a first schematic diagram of the structure of the spray dust suppression component in this utility model;

[0020] Figure 4 This is a second schematic diagram of the structure of the spray dust suppression component in this utility model;

[0021] Figure 5 This is a schematic diagram of the ash baffle structure of this utility model.

[0022] The meanings of the labels in the diagram are as follows:

[0023] 1. Mobile frame; 2. Lifting cylinder; 3. Power box; 4. Drilling frame; 5. Drive cylinder; 6. Power source; 7. Positioning plate; 8. Cage; 9. Guide plate; 10. Dust baffle; 11. Rotating frame; 12. Pin; 13. Limiting block; 14. Water tank; 15. Spray pump; 16. First spray pipe; 17. Second spray pipe; 18. Dust suppression nozzle. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1:

[0026] Please see Figure 1-5 The present invention will describe the above technical solution in detail through the following embodiments:

[0027] A drilling device for soil and rock formations, comprising:

[0028] The mobile frame 1, lifting cylinder 2, power box 3, drilling frame 4 and power source 6 are provided. The power source 6 is used to connect the drill rod and drill bit and drive them to rotate to achieve drilling. The bottom of the drilling frame 4 is provided with a positioning plate 7. The top surface of the positioning plate 7 is provided with a retainer 8. The side of the positioning plate 7 is provided with several dust baffles 10. The dust baffles 10 are inclined and form a closed space. The top surface of the retainer 8 and the dust baffle assembly is provided with a spray dust suppression assembly.

[0029] The mobile chassis 1 adopts a tracked or wheeled drive structure for moving the device. In this embodiment, a tracked structure is used.

[0030] The lifting cylinders 2 are located on the side of the mobile frame 1, and there are at least four of them. They are used to lift the mobile frame 1 and prevent the mobile frame 1 from moving during the drilling process.

[0031] The power unit 3 provides power to the mobile frame 1, the lifting cylinder 2, and other hydraulic equipment. A diesel engine can be used for power.

[0032] Power source 6 uses a hydraulic motor, which has low speed and high torque, making it suitable for drilling operations.

[0033] The bottom back of the drilling rig 4 is rotatably connected to the mobile frame 1 and is equipped with a drive cylinder 5.

[0034] The drive cylinder 5 is a hydraulic cylinder used to drive the drilling rig 4 to rotate, so that the drilling rig 4 can switch between horizontal and vertical states.

[0035] The positioning plate 7 has a through hole in the center for the drill bit to pass through, and a rotating frame 11 is provided on the side of the positioning plate 7. The dust baffle 10 is rotatably connected to the rotating frame 11 by a pin 12.

[0036] Positioning plate 7 is used to assist in drill bit positioning.

[0037] The pin 12 facilitates the assembly and disassembly of the dust baffle 10. The dust baffle 10 can be removed during transportation or relocation.

[0038] The dust baffle 10 uses its own hardness and weight to withstand the impact of flying stones. Its rotatable installation method allows it to convert the kinetic energy of the impact into gravitational potential energy by rotating when subjected to a large impact, thus reducing the impact.

[0039] The top surface of the positioning plate 7 is provided with a guide plate 9, and the retainer 8 is slidably installed between the guide plates 9. There are two retainers 8 in total, and the two retainers 8 have semi-circular grooves on opposite sides.

[0040] The cage 8 adopts a horizontal sliding design, which helps to improve the ability to withstand vertical impacts.

[0041] A limiting block 13 is provided on the inner side of the top of the dust baffle 10. The top surface of the limiting block 13 abuts against the bottom surface of the positioning plate 7 to limit the rotation angle of the dust baffle 10.

[0042] The limiting block 13 can transmit the impact of the downward rotation of the dust baffle 10 to the positioning plate 7, reducing the impact on other dust baffles 10 and preventing deformation of the joint.

[0043] There are at least four dust baffles 10. Each dust baffle 10 has an angle of 45-60° with the ground. When the top surface of the limiting block 13 abuts against the bottom surface of the positioning plate 7, the edges of two adjacent dust baffles 10 abut against each other.

[0044] In this embodiment, the included angle is set to 60°. After the stone hits the dust-blocking plate 10, it will refract and may bounce back a second time after hitting the ground. The larger angle can reduce the distance that the stone moves outward after the second bounce, thus improving safety.

[0045] At the same time, the larger angle allows viscous impurities such as mud to slide off quickly after splashing onto the dust baffle 10, reducing adhesion.

[0046] The dust suppression spraying assembly includes a water tank 14, which is located on the mobile frame 1 and is used to hold spraying water. The water tank 14 is connected to a spraying pump 15.

[0047] The dust suppression spray assembly also includes a first spray pipe 16 and a second spray pipe 17. The first spray pipe 16 and the second spray pipe 17 are located on the top surface of the dust baffle plate 10 and the retainer 8, respectively, and are connected to the spray pump 15. The first spray pipe 16 and the second spray pipe 17 are provided with a plurality of dust suppression nozzles 18.

[0048] The dust suppression nozzles 18 on the first spray pipe 16 are parallel to the dust baffle 10 and are used to cover the dust flying out from the gap between the bottom of the dust baffle 10 and the ground.

[0049] The dust suppression nozzles 18 on the second spray pipe 17 are tilted upward at 30-60 degrees to cover the dust flying out from the gap between the retainer 8 and the drill rod.

[0050] Since there is virtually no dust in non-rocky conditions, the spray pump 15 can be manually controlled by the operator.

[0051] The spray pump 15 is connected to the first spray pipe 16 and the second spray pipe 17 by a flexible hose.

[0052] Working principle:

[0053] Upon reaching the drilling point, the hydraulic cylinder 5 is used to erect the drilling rig 4.

[0054] Secure the dust baffle 10 in place using pins 12.

[0055] After installing the drill rod, push the retainer 8 towards the center to cover the through hole in the center of the positioning plate 7.

[0056] The spray pump 15 is connected to the first spray pipe 16 and the second spray pipe 17 using a hose.

[0057] Control power source 6 to start drilling.

[0058] When encountering a rock layer, dust and rocks are ejected from the borehole. At this time, the spray pump 15 is controlled to work, and water is sprayed from the dust suppression nozzle 18 to suppress the dust.

[0059] During drilling, flying rocks and mud are blocked by the retainer 8 and the dust baffle 10, accumulating below them and requiring periodic cleaning by operators. During cleaning, the presence of the dust baffle 10 protects operators from flying rocks or mud.

[0060] After drilling is completed, the dust baffle 10 and retainer 8 need to be cleaned, which can be done by directly rinsing with water. When the drilling operation aims to drill a well, compressed air can be used to blow out the groundwater for flushing.

[0061] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A drilling device for rock and soil layers, characterized in that, include: The mobile frame (1), lifting cylinder (2), power box (3), drilling frame (4) and power source (6) are provided. The power source (6) is used to connect the drill rod and drill bit and drive them to rotate to achieve drilling. The bottom end of the drilling frame (4) is provided with a positioning plate (7). The top surface of the positioning plate (7) is provided with a retainer (8). The side of the positioning plate (7) is provided with several dust baffles (10). The dust baffles (10) are inclined and form a closed space. The top surface of the retainer (8) and the dust baffle assembly is provided with a spray dust suppression assembly.

2. The drilling equipment for rock and soil layers as described in claim 1, characterized in that: The positioning plate (7) has a through hole in the center for the drill bit to pass through. The positioning plate (7) has a rotating frame (11) on its side. The dust baffle (10) is rotatably connected to the rotating frame (11) by a pin (12).

3. The drilling equipment for rock and soil layers as described in claim 2, characterized in that: The top surface of the positioning plate (7) is provided with a guide plate (9), and the retainer (8) is slidably installed between the guide plates (9). There are two retainers (8), and the two retainers (8) are provided with semi-circular grooves on opposite sides.

4. The drilling equipment for rock and soil layers as described in claim 2, characterized in that: The top inner side of the dust baffle (10) is provided with a limiting block (13), the top surface of the limiting block (13) abuts against the bottom surface of the positioning plate (7) to limit the rotation angle of the dust baffle (10).

5. The drilling equipment for rock and soil layers as described in claim 4, characterized in that: There are at least four dust baffles (10), and the angle between each dust baffle (10) and the ground is 45-60°. When the top surface of the limiting block (13) abuts against the bottom surface of the positioning plate (7), the edges of two adjacent dust baffles (10) abut against each other.

6. The drilling equipment for rock and soil layers as described in claim 1, characterized in that: The dust suppression spraying assembly includes a water tank (14), which is located on a mobile frame (1) and is used to hold spraying water. The water tank (14) is connected to a spraying pump (15).

7. The drilling equipment for soil and rock layers as described in claim 6, characterized in that: The dust suppression spray assembly also includes a first spray pipe (16) and a second spray pipe (17). The first spray pipe (16) and the second spray pipe (17) are located on the top surface of the dust baffle (10) and the retainer (8) respectively and are connected to the spray pump (15). The first spray pipe (16) and the second spray pipe (17) are provided with a plurality of dust suppression nozzles (18).

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