Drill rod device

Abstract

The utility model discloses a drill rod device which comprises a drill bit, a driving device, a rod body and a hydraulic telescopic device, the drill bit is provided with a plurality of blades, a driving shaft of the driving device is connected with the drill bit to drive the drill bit to rotate, a cavity is formed in the rod body, the rod body is arranged on the periphery of the driving shaft, and the hydraulic telescopic device comprises a hydraulic telescopic rod. The hydraulic telescopic rod is connected with the rod body and used for driving the rod body to abut against the drill bit so that the drill bit can be tightly attached to the rock surface. According to the technical scheme, when the drill bit cuts a rock to form a hole, the hydraulic telescopic device enables the drill bit to be tightly attached to the rock surface, cut rock-soil body residues pass through the cavity of the rod body, the rock-soil body residues are conveyed from one side of the rod body to the other side of the rod body through the mutual extrusion force of rock-soil bodies, and therefore the dust amount is greatly reduced, and the service life of the rod body is prolonged. And the hole forming quality is high, the hole collapse risk is low, and important significance is achieved for drilling.

Description

Technical Field

[0001] The utility model relates to the technical field of rock drilling, and particularly relates to a drill rod device for cutting and drilling. Background Art

[0002] In recent years, with the rapid development of open-pit mining, highway construction, and railway construction, the number of slopes across the country has been increasing year by year, and the prevention and control of slopes brook no delay.

[0003] For slopes formed naturally and after excavation, they are long-term eroded by rainwater and groundwater, and are affected by vehicle loads and vibration loads, and are prone to hazards such as landslides, cracks, and debris flows. There are various ways to prevent and control slopes, and commonly used bolt support is adopted. Its principle is to anchor the bolts to the stable rock stratum to make them integrated, so as to play a role in strengthening the slope. However, when using bolt support, it is necessary to drill rock holes in the slope rock mass. Usually, rock drills and rock drilling jumbo are used to drill holes in the slope rock mass. Its working principle is mainly to use the impact pressure generated by the machine to break the rock mass to form holes, but it is easy to cause dust pollution and the phenomenon of hole collapse. At the same time, it is also difficult to clean the crushed stones and sundries in the hole.

[0004] Many scholars have conducted a large number of studies on the methods of slope rock drilling. At present, impact hole forming is the mainstream method of drilling, but the dust pollution in the operation area caused by its large impact force, and the impact force is difficult to control, which is easy to cause hole collapse in the hole, and the difficulty of hole cleaning operation is high, affecting the hole forming efficiency. The large impact reaction force poses a hidden danger to the life safety of front-line operators.

[0005] Therefore, although the impact hole forming has high efficiency, it is also accompanied by large safety hazards and problems of low hole forming quality. How to change the method of slope rock drilling, the industry has not given a good method at present. Content of the Utility Model

[0006] The main purpose of the utility model is to propose a drill rod device, aiming to solve the technical problems of safety hazards and low hole forming quality in rock drilling during slope bolt support.

[0007] To achieve the above purpose, the drill rod device proposed by the utility model includes:

[0008] A drill bit, which is provided with a plurality of blades;

[0009] A driving device, the driving shaft of which is connected to the drill bit to drive the drill bit to rotate;

[0010] A rod body, which has a cavity inside, the rod body is arranged on the outer periphery of the driving shaft, and,

[0011] The hydraulic telescopic device includes a hydraulic telescopic rod, and the hydraulic telescopic rod is connected to the rod body for driving the rod body to abut against the drill bit so that the drill bit is in close contact with the rock surface.

[0012] Optionally, the rod body includes a plurality of first sleeve rods connected to each other.

[0013] Optionally, the first sleeve rods are sequentially connected by threads.

[0014] Optionally, the rod body further includes a second sleeve rod, and the second sleeve rod and the drive shaft are connected by a bearing.

[0015] Optionally, one end of the hydraulic telescopic rod is connected to the first sleeve rod, and the other end is connected to the second sleeve rod.

[0016] Optionally, the first sleeve rod and the second sleeve rod are sleeved with each other so that they can slide relative to each other.

[0017] Optionally, the open end of the second sleeve rod is arranged close to the driving device.

[0018] Optionally, the second sleeve rod is provided with a slag discharge port.

[0019] Optionally, the hydraulic telescopic device further includes an oil pipe for injecting hydraulic oil into the hydraulic cylinder of the hydraulic telescopic rod.

[0020] Optionally, the driving device is an AC servo motor.

[0021] In the technical solution of the present utility model, when the drill bit cuts a hole in the rock, the hydraulic telescopic device makes the drill bit in close contact with the rock surface. The cut rock and soil slag are transported from one side of the rod body to the other side by using the extrusion force between the rock and soil through the cavity of the rod body, thereby greatly reducing the amount of dust, having high hole-forming quality and low risk of hole collapse, which is of great significance to drilling. Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings.

[0023] Figure 1 It is a three-dimensional structure diagram of an embodiment of the drill pipe device provided by the present utility model;

[0024] Figure 2 It is Figure 1 the bottom view of

[0025] Figure 3 is Figure 1 a side view of;

[0026] Figure 4 is Figure 3 a sectional view of the A-A section in;

[0027] In the figure: drill pipe device - 100, drill bit - 1, blade - 11, drive device - 2, drive shaft - 21, rod body - 3, first sleeve rod - 31, second sleeve rod - 32, slag discharge port - 32a, bearing - 321, hydraulic telescopic device - 4, hydraulic telescopic rod - 41, hydraulic cylinder - 411, pull rod - 412, oil pipe - 42.

[0028] The realization of the purpose, functional features and advantages of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Specific Embodiments

[0029] Next, the technical solutions in the embodiments of the present application will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without making creative efforts shall fall within the protection scope of the present application.

[0030] To better describe and illustrate the embodiments of the present application, one or more accompanying drawings may be referred to, but the additional details or examples used to describe the drawings should not be considered as limiting the scope of any of the inventive concepts of the present application, the currently described embodiments, or the preferred modes.

[0031] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and does not indicate that the device referred to must have a specific orientation or operate in a specific orientation. Therefore, it should not be construed as a limitation of the present utility model.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs. The terms used in the description of this application herein are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0033] Many scholars have conducted a great deal of research on the method of rock slope drilling. Currently, impact hole formation is the mainstream method for drilling. However, the large impact force generates dust that pollutes the working area, and it is difficult to control the impact force, which easily causes cave-ins in the hole, making the hole cleaning operation difficult and affecting the hole formation efficiency. The large impact reaction force poses a potential safety hazard to the lives of front-line workers.

[0034] In view of this, the present utility model provides a drill rod device. Figures 1-4 This is an embodiment of the drill rod device provided by the present utility model. Please refer to Figures 1-4 , the drill rod device 100 includes a drill bit 1, a driving device 2, a rod body 3, and a hydraulic telescopic device 4.

[0035] Specifically, the drill bit 1 is cylindrical, and it is evenly provided with 8 groups of transverse blades 11 along the circumferential direction. Each group of transverse blades 11 has several rotatably arranged blades 11. When the drill bit 1 contacts the rock and rotates, multiple groups of blades 11 rotate simultaneously, thereby enabling each blade 11 to cut the rock. The driving device 2 is arranged away from the drill bit 1, and its drive shaft 21 is fixedly connected to the drill bit 1 through threads to drive the drill bit 1 to rotate. The rod body 3 is arranged between the drill bit 1 and the driving device 2 and is sleeved outside the drive shaft 21. The interior of the rod body 3 has a cavity for accommodating and transporting the cut rock and soil residues. The hydraulic telescopic device 4 includes a hydraulic telescopic rod 41. The hydraulic telescopic rod 41 is connected to the rod body 3 and is used to drive the rod body 3 to abut against the drill bit 1 so that the drill bit 1 is closely attached to the rock surface. It should be noted that when using this drill rod device 100, it is necessary to manually or mechanically stably control the driving device 2 to enable it to smoothly advance in the direction of the hole.

[0036] In the technical solution of the present utility model, when the drill bit 1 cuts the rock to form a hole, the hydraulic telescopic device 4 makes the drill bit 1 closely attached to the rock surface. The cut rock and soil residues pass through the cavity of the rod body 3. By using the extrusion force between the rock and soil bodies, the rock and soil residues are transported from one side of the rod body 3 to the other side, thereby greatly reducing the amount of dust, having a high hole formation quality and a low risk of cave-in, which is of great significance for drilling. The hole formed by using the drill rod device 100 with this structure is a relatively regular circle, having good structural stability and a low risk of cave-in. Through the cutting action of the blades 11 of the drill bit 1, compared with the impact action, the dust on the working surface can be well controlled, and less labor is consumed.

[0037] To facilitate drilling of rocks at various depths, please refer to Figure 1 and Figure 4, in an embodiment of the present utility model, the rod body 3 includes a plurality of interconnected first sleeve rods 31; correspondingly, the length of the drive shaft 21 is also formed by connecting a plurality of sub-shafts. When the drilling depth is too large, one or more first sleeve rods 31 and sub-shafts can be selectively added, so that the drill bit 1 can drill into the rock and soil at a specified depth, and thus different depths of drilling can be satisfied.

[0038] It should be noted that, in this embodiment, each of the first sleeve rods 31 is connected to each other by threads, and each of the sub-shafts is also connected to each other by threads, and the rotation direction of the drill bit 1 is the same as the direction of thread tightening.

[0039] For the convenience of the hydraulic telescopic rod 41 to push the rod body 3, please refer to Figure 1 and Figure 4 , in an embodiment of the present utility model, the rod body 3 further includes a second sleeve rod 32. The second sleeve rod 32 is sleeved on the outer periphery of the drive shaft 21 and is fixedly connected to the drive shaft 21 through a bearing 321 and does not rotate with the drive shaft 21.

[0040] Furthermore, please refer to Figure 1 and Figure 4 , in this embodiment, one end of the hydraulic telescopic rod 41 is connected to the first sleeve rod 31, and the other end is connected to the second sleeve rod 32. It should be understood that the hydraulic telescopic rod 41 includes a pull rod 412 and a hydraulic cylinder 411 that are hermetically connected to each other. Hydraulic oil enters the hydraulic cylinder 411 through a oil pipe 42, and then pushes the pull rod 412 to expand and contract. Among them, the pull rod 412 is connected to the first sleeve rod 31, and the hydraulic cylinder 411 is connected to the second sleeve rod 32.

[0041] Among them, it should be noted that the pull rod 412 can drive the first sleeve rod 31 to abut against the drill bit 1, so that the drill bit 1 is closer to the rock surface, and a part of the first sleeve rod 31 is sleeved on the outer periphery of the drill bit 1.

[0042] For the convenience of the first sleeve rod 31 to expand and contract relative to the second sleeve rod 32, please refer to Figure 1 and Figure 4 , in an embodiment of the present utility model, the first sleeve rod 31 and the second sleeve rod 32 are sleeved with each other, and within the moving stroke of the first sleeve rod 31, the first sleeve rod 31 can slide relative to the second sleeve rod 32 and will not break away from the second sleeve rod 32.

[0043] For the convenience of discharging the rock and soil slag, please refer to Figure 1 and Figure 4 , in an embodiment of the present utility model, the open end of the second sleeve rod 32 is close to the driving device 2.

[0044] Furthermore, please refer to Figure 1 and Figure 4, in this embodiment, the second sleeve rod 32 is provided with a slag discharge port 32a. When the rock and soil slag enters the first sleeve rod 31 through the gap of the drill bit 1, by using the mutual extrusion force of the rock and soil mass, the rock and soil slag is discharged to the slag discharge port 32a of the second sleeve rod 32 by itself.

[0045] As a preferred embodiment, the driving device 2 is an AC servo motor, which is suitable for the high-speed and high-torque working state in rock and soil drilling.

[0046] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0047] The above embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A drill rod device, characterized in that: include: A drill bit (1), wherein the drill bit (1) is provided with a plurality of blades (11); A driving device (2), wherein a driving shaft (21) of the driving device (2) is connected to the drill bit (1) to drive the drill bit (1) to rotate; A shaft (3) having a cavity therein, the shaft (3) being arranged on the outer periphery of the drive shaft (21), and The hydraulic telescopic device (4) comprises a hydraulic telescopic rod (41), wherein the hydraulic telescopic rod (41) is connected to the rod body (3) and is used to drive the rod body (3) to abut against the drill bit (1) so that the drill bit (1) is closely fitted to the rock surface.

2. The drill rod device according to claim 1, characterized in that: The rod shaft (3) comprises a plurality of first sets of rods (31) connected to each other.

3. The drill rod device according to claim 2, characterized in that: The first sleeve rods (31) are threadedly connected in sequence.

4. The drill rod device according to claim 2, characterized in that: The rod body (3) further comprises a second set of rods (32), and the second set of rods (32) and the driving shaft (21) are connected via a bearing.

5. The drill rod device according to claim 4, characterized in that: One end of the hydraulic telescopic rod (41) is connected to the first set of rods (31), and the other end is connected to the second set of rods (32).

6. The drill rod device according to claim 4 or 5, characterized in that: The first sleeve rod (31) and the second sleeve rod (32) are sleeved together so as to enable the two to slide relative to each other.

7. The drill rod device according to claim 4, characterized in that: The open end of the second sleeve rod (32) is arranged close to the driving device (2).

8. The drill rod device according to claim 7, characterized in that: The second sleeve rod (32) is provided with a slag discharge port (32a).

9. The drill rod device according to claim 1, characterized in that: The hydraulic telescopic device (4) further comprises an oil pipe (42) for injecting hydraulic oil into the hydraulic cylinder (411) of the hydraulic telescopic rod (41).

10. The drill rod device according to claim 1, characterized in that: The driving device (2) is an AC servo motor.

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