Down-the-hole drill equipment

Abstract

The utility model relates to the technical field of drilling equipment, and provides down-the-hole drill equipment which comprises a guide rail, and the stroke length of the guide rail is larger than or equal to the depth of a hole to be drilled. The down-the-hole drill is connected to the guide rail in a sliding manner; the down-the-hole drill comprises a drill bit and a drill rod, the drill rod is arranged in the length direction of the guide rail, and the length of the drill rod is larger than or equal to the depth of a hole to be drilled; the drill bit is connected to one end of the drill rod; the movable support is supported between the drill rod and the guide rail, one end of the movable support is connected to the guide rail in a sliding mode, and the other end of the movable support is used for supporting the drill rod; and the traction mechanism is used for pulling the down-the-hole drill to move along the guide rail. According to the down-the-hole drill, the defects that in the prior art, when the down-the-hole drill works, the drill rod needs to be repeatedly disassembled and assembled, the drill rod is prone to being locked, and the hole guiding work efficiency is low can be overcome.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling equipment, in particular to a down-the-hole drilling equipment. Background Art

[0002] A down-the-hole drill is a device used to drill holes in rock and is commonly used in hole-guiding operations. For example, a down-the-hole drill is used to guide holes on the ground during the injection process of a land plug-in machine. Existing down-the-hole drills generally include a down-the-hole drill main unit, a drill rod and a drill bit, wherein the drill rod is spliced ​​together from multiple segments. When drilling, new segments need to be manually spliced ​​as the drill bit continues to go deeper to increase the drill rod length accordingly, thereby maintaining the power transmission from the down-the-hole drill main unit to the drill bit. However, this approach requires a lot of manpower and material resources to disassemble and assemble the drill rod, resulting in low efficiency and long construction period for hole-guiding operations. On the other hand, the drill rod is prone to locking, especially when encountering hard interlayers, which requires increasing the injection time, injection intensity and injection frequency, thereby reducing the hole-guiding efficiency. At the same time, the drill rod needs to be disassembled and reassembled, which further slows down the construction speed. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings of the prior art that the drill rod needs to be repeatedly disassembled and assembled during down-the-hole drilling operation and the drill rod is easily locked, resulting in low efficiency of the hole-guiding operation, and to provide a down-the-hole drilling device.

[0004] In a first aspect, the present invention provides a down-the-hole drilling device comprising:

[0005] A guide rail, the travel length of which is greater than or equal to the depth of the hole to be drilled;

[0006] A down-the-hole drill rig is slidably connected to the guide rail; the down-the-hole drill rig comprises a drill bit and a drill rod, the drill rod being arranged along the length of the guide rail, the length of the drill rod being greater than or equal to the depth of the hole to be drilled; the drill bit is connected to one end of the drill rod;

[0007] A movable support is supported between the drill rod and the guide rail, one end of the movable support is slidably connected to the guide rail, and the other end of the movable support is used to support the drill rod;

[0008] The traction mechanism is used to pull the down-the-hole drill rig to move along the guide rail.

[0009] The traction mechanism includes but is not limited to a hydraulic telescopic rod, an electric telescopic rod, a combination of a motor and a travel wheel, etc.; the installation position of the traction mechanism depends on the type of traction mechanism. For example, if the traction mechanism is a combination of a motor and a travel wheel, the traction mechanism can be connected to a down-the-hole drill; if the traction mechanism is a hydraulic telescopic rod, the traction mechanism can be connected to the guide rail and the down-the-hole drill at both ends respectively.

[0010] The down-the-hole drilling equipment of this scheme connects the down-the-hole drill rig as a whole to the guide rail and is provided with a traction mechanism, and the length of the guide rail and the drill rod are both greater than or equal to the depth of the drill hole. Therefore, when drilling is required, the down-the-hole drill rig is moved along the guide rail by the traction of the traction mechanism, which can drive the drill rod and the drill bit to drill through to the maximum depth of the hole to be drilled at one time, completing the drilling operation of the hole to be drilled; then the traction mechanism is reversed to withdraw the drill rod and the drill bit as a whole from the completed hole, and the next drilling operation can be carried out; and the movable support can suppress the deformation of the drill rod, and avoid obstruction to the movement of the down-the-hole drill rig along the guide rail through its sliding connection with the guide rail.

[0011] As can be seen from the above, this solution achieves the lowering of the drill rod and drill bit through the movement of the guide rail and traction mechanism, without the need to continuously assemble the drill rod segments as in the prior art. Therefore, it can save a lot of manpower and material resources, and reduce the risk of the drill rod locking, thereby improving the operating efficiency and speed of the drilling operation.

[0012] Preferably, it further comprises a connecting rope, one end of which is connected to the down-the-hole drill, and the other end of which is connected to the movable support.

[0013] The movable support of this solution can move with the down-the-hole drill driven by the connecting rope, thereby maintaining the relative position of the movable support and the drill rod unchanged as much as possible to ensure the support effect and avoid the movable support from hindering the movement of the down-the-hole drill along the guide rail.

[0014] Preferably, the connecting cable comprises a chain.

[0015] Chains include but are not limited to ring chains, drag chains, and transmission chains.

[0016] This proposal recommends the specific structural form of the connecting cable.

[0017] Preferably, the traction mechanism includes a winch, and a cable is connected between the winch and the down-the-hole drill. The rotation of the winch can drive the down-the-hole drill to move along the guide rail.

[0018] Since the depth of the hole to be drilled is often large, the travel requirement of the guide rail is also large; this solution recommends the use of a winch as the traction mechanism; compared with other structural forms, such as hydraulic telescopic rods or electric telescopic rods, this solution is more conducive to achieving the larger travel requirement of the guide rail.

[0019] Preferably, the winch comprises at least two coils of cables, at least one coil of cable is used for pulling the down-the-hole drill forward, and at least one coil of cable is used for pulling the down-the-hole drill backward.

[0020] This solution enables the movement of the down-the-hole drill rig in both directions along the length direction of the guide rail to be pulled by the winch, thereby improving the movement efficiency of the down-the-hole drill rig and further improving the operating efficiency and speed of the drilling operation.

[0021] Preferably, the movable support includes a limiting hole, and the limiting hole is clearance-matched with the outer wall of the drill rod.

[0022] This solution enables the movable support to form complete support for the drill rod along the circumference of the drill rod, thereby ensuring the stability of the drill rod.

[0023] Preferably, the number of the movable supports is greater than one, and the movable supports are distributed at intervals along the length direction of the guide rail.

[0024] This solution can form multi-point support for the drill rod through multiple movable supports, thereby further suppressing the deformation of the drill rod.

[0025] Preferably, it further comprises a fixed support, one end of which is fixed to an end of the guide rail close to the drill bit, and the other end of the fixed support is used to support the drill rod.

[0026] Since the end of the guide rail close to the drill bit is not likely to interfere with the down-the-hole drill, this solution directly sets a fixed support at the end of the guide rail close to the drill bit, which can further suppress the deformation of the drill rod without causing the complexity of this solution to be too high.

[0027] Preferably, the guide rail comprises a profiled steel member.

[0028] Steel components include but are not limited to H-shaped steel, I-shaped steel, and channel steel.

[0029] This solution can ensure the rigidity of the guide rail through mature steel components and make the guide rail easy to manufacture.

[0030] Preferably, the vehicle further comprises a vehicle body, the vehicle body is connected to a support arm arranged in a vertical direction, and the guide rail is connected to the support arm.

[0031] The vehicle body includes but is not limited to a wheeled vehicle body, a tracked vehicle body, and a step-by-step vehicle body.

[0032] This solution installs the guide rail and the down-the-hole drill on a movable vehicle body, which is conducive to moving the down-the-hole drill equipment of this solution as a whole to the next hole to be drilled to continue operation after completing one hole, thereby improving the operating efficiency and speed during continuous drilling operations.

[0033] Compared with the existing technology, the beneficial effects of the present invention are:

[0034] The utility model provides a down-the-hole drilling device, which realizes the downward penetration of the drill rod and the drill bit through the movement of the guide rail and the traction mechanism, and suppresses the deformation of the drill rod through the movable support. There is no need to continuously assemble the drill rod segments as in the prior art, thereby saving a lot of manpower and material resources, reducing the risk of the drill rod locking, and thus improving the working efficiency and speed of the drilling operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1This is a schematic diagram of the three-dimensional structure of a down-the-hole drilling device of the present utility model;

[0036] Figure 2 This is a side view of the structure of a down-the-hole drilling device of the utility model. Figure 1 ;

[0037] Figure 3 This is a side view of the structure of a down-the-hole drilling device of the utility model. Figure 2 ;

[0038] Figure 4 This is a schematic diagram of the cross-sectional structure of a down-the-hole drilling device at a movable support portion of the present invention;

[0039] Figure 5 This is a side view of the structure of a down-the-hole drilling device of the utility model. Figure 3 ;

[0040] Icons: 1-guide rail; 2-down-the-hole drill; 21-drill body; 22-drill rod; 23-drill bit; 3-movable support; 31-connecting rope; 4-fixed support; 5-vehicle body; 51-support arm; 6-winch. DETAILED DESCRIPTION

[0041] The present invention will be further described in detail below in conjunction with test examples and specific embodiments. However, this should not be understood as limiting the scope of the present invention to the following embodiments, and all technologies implemented based on the present invention fall within the scope of the present invention.

[0042] Unless otherwise specified, in the description of the specific embodiments of the present invention, the terms indicating orientation or positional relationships such as "upper," "lower," "left," "right," "center," "inside," and "outside" are based on the orientation or positional relationships shown in the accompanying drawings, or are the orientation or positional relationships in which the inventive product / device / apparatus is typically placed when in use. These terms indicating orientation or positional relationships are merely for the purpose of facilitating the description of the present invention or simplifying the description of the specific embodiments to facilitate a quick understanding of the solutions by technicians. They do not indicate or imply that a particular device / component / element must have a specific orientation or be constructed and operated in a specific positional relationship, and therefore should not be construed as limiting the present invention.

[0043] In addition, if the terms "horizontal", "vertical", "overhanging", "parallel" and the like appear, it does not mean that the corresponding devices / components / elements are required to be absolutely horizontal or vertical or overhanging or parallel, but may be slightly tilted or have deviations. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but may be slightly tilted. Alternatively, it can be simply understood that the corresponding devices / components / elements are set in directions such as "horizontal", "vertical", "overhanging", and "parallel", and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably an error / deviation within ±8%, more preferably an error / deviation within ±6%, more preferably an error / deviation within ±5%, and more preferably an error / deviation within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its role in the solution of the present invention.

[0044] In addition, the expressions "first", "second", "third", etc. that appear in the terms are merely descriptions used to distinguish the same or similar components and should not be understood as emphasizing or implying the relative importance of specific components.

[0045] In addition, in the description of the embodiments of the present invention, "several," "plurality," and "a number" represent at least two. It can also be any number such as two, three, four, five, six, seven, eight, nine, or even more than nine.

[0046] Furthermore, in the description of the technical solution of the present invention, unless otherwise expressly specified, defined, or limited, the terms "disposed," "installed," "connected," "connected," "provided with," "laid," and "arranged" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections. They may be welded, riveted, bolted, threaded, or other commonly used connection methods in the art. Such connections may be mechanical, electrical, or communicative; they may be direct, indirect via an intermediate medium, or internally connected between two components.

[0047] Example 1

[0048] like Figures 1 to 5As shown, a down-the-hole drilling equipment includes a guide rail 1, a down-the-hole drill rig 2, a movable support 3 and a traction mechanism; the stroke length of the guide rail 1 is greater than or equal to the depth of the hole to be drilled; the down-the-hole drill rig 2 is slidably connected to the guide rail 1; the down-the-hole drill rig 2 includes a drill bit 23, a drill rod 22 and a drill body 21; the drill rod 22 is arranged along the length direction of the guide rail 1, and the length of the drill rod 22 is greater than or equal to the depth of the hole to be drilled; the drill bit 23 is connected to one end of the drill rod 22; the drill body 21 can drive the drill bit 23 to rotate through the drill rod 22; the movable support 3 is supported between the drill rod 22 and the guide rail 1, one end of the movable support 3 is slidably connected to the guide rail 1, and the other end of the movable support 3 is used to support the drill rod 22; the traction mechanism is used to tow the down-the-hole drill rig 2 to move along the guide rail 1.

[0049] In an optional embodiment, if Figure 4 As shown, the movable support 3 faces one end of the guide rail 1, i.e. Figure 4 The upper end of the middle part has a limiting groove whose shape matches the cross-sectional shape of the guide rail 1. By sleeved on the guide rail 1, the sliding connection between the movable support 3 and the guide rail 1 can be realized; a limiting hole is provided in the middle part of the movable support 3, and the limiting hole is matched with the outer wall gap of the drill rod 22, so that the drill rod 22 can be fully supported along the circumference of the drill rod 22.

[0050] In an optional embodiment, the number of the movable supports 3 is greater than one, and the movable supports 3 are spaced apart along the length direction of the guide rail 1. Figures 1 to 3 As shown, in this embodiment, two movable supports 3 are arranged at intervals along the length direction of the guide rail 1.

[0051] In an optional embodiment, if Figures 1 to 3 As shown, it also includes a fixed support 4, one end of the fixed support 4 is fixed to the end of the guide rail 1 close to the drill bit 23, that is, the guide rail 1 is Figures 1 to 3 the other end of the fixed support 4 is used to support the drill rod 22.

[0052] In an optional embodiment, if Figure 4 As shown, the movable support 3 can adopt a plate structure to facilitate direct cutting from a steel plate; correspondingly, the fixed support 4 can also adopt the same structure and shape to facilitate manufacturing together with the movable support 3; specifically, the movable support 3 and the fixed support 4 are made of a plate with a thickness of 5mm to 10mm, and their shapes are as follows Figure 4 Shown is a roughly semicircular shape to avoid scratching surrounding structures.

[0053] In an optional embodiment, a connecting rope 31 is further included, one end of the connecting rope 31 is connected to the down-the-hole drill 2, and the other end of the connecting rope 31 is connected to the movable support 3. Figure 3 As shown, the movable support 3 is suspended below the drilling rig body 21 of the down-the-hole drill rig 2 through the connecting rope 31. When the down-the-hole drill rig 2 moves up, as shown in FIG. Figure 2As shown, the connecting rope 31 can be straightened, thereby driving the movable support 3 to move upward; and when the down-the-hole drill 2 moves downward, as shown in FIG. Figure 3 As shown, the connecting rope 31 will bend, so that the distance between the down-the-hole drill 2 and the movable support 3 can be shortened, thereby preventing the downward movement of the down-the-hole drill 2 from being hindered by the movable support 3.

[0054] In an optional embodiment, the connecting cable 31 includes a chain.

[0055] In an optional embodiment, the traction mechanism includes a winch 6 , and a cable is connected between the winch 6 and the down-the-hole drill 2 . The rotation of the winch 6 can drive the down-the-hole drill 2 to move along the guide rail 1 .

[0056] In an optional embodiment, the winch 6 includes at least two coils of cable, at least one coil of cable is used for pulling the down-the-hole drill 2 forward, and at least one coil of cable is used for pulling the down-the-hole drill 2 backward.

[0057] In an optional embodiment, the guide rail 1 includes a steel member; specifically, the guide rail 1 of this embodiment is modified from an I-beam.

[0058] In an optional embodiment, if Figure 5 As shown, the vehicle body 5 is further comprised of a vehicle body 5, to which a support arm 51 arranged in a vertical direction is connected, and a guide rail 1 is connected to the support arm 51. Specifically, since a drainage board inserting machine often has a huge pile frame arranged in a vertical direction in order to perform the board inserting operation, the vehicle body 5 of this embodiment is directly modified from the drainage board inserting machine to reduce the manufacturing or modification cost of this embodiment; specifically, the vibrating hammer slide rail on the drainage board inserting machine is replaced with the guide rail 1 of this embodiment, thereby converting the pile frame of the drainage board inserting machine into the guide rail 1 of this embodiment, and then the down-the-hole drill 2 is integrally slidably connected to the guide rail 1, and other ancillary equipment, such as an air source and a power source, can also be fixed to the vehicle body 5.

[0059] Taking a 19m long drill rod 22 consisting of 6 segments required for a certain operation as an example, if the existing method is used for drilling operations, a single drilling operation requires at least 6 2-minute assembly operations of the drill rod 22 and 5 4-minute disassembly operations of the drill rod 22, totaling about half an hour; that is, using the existing technology, a single drilling operation requires at least half an hour; and when the drill rod 22 is locked, an additional half an hour is required to dismantle the rod, which reduces the operating efficiency; and if the down-the-hole drilling equipment of this embodiment is used for drilling operations, only one assembly operation of the drill rod 22 is required at the beginning, and the assembled drill rod 22 can be reused in subsequent processes. The time taken for a single drilling operation is reduced to about 5 minutes, and the locking phenomenon of the drill rod 22 can be avoided; it can be seen that this embodiment can greatly improve the operating efficiency and speed of the drilling operation.

[0060] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A down-the-hole drilling device, characterized in that: Include: A guide rail (1), wherein the travel length of the guide rail (1) is greater than or equal to the depth of the hole to be drilled; A down-the-hole drill (2), wherein the down-the-hole drill (2) is slidably connected to the guide rail (1); the down-the-hole drill (2) comprises a drill bit (23) and a drill rod (22); the drill rod (22) is arranged along the length direction of the guide rail (1), and the length of the drill rod (22) is greater than or equal to the depth of the hole to be drilled; the drill bit (23) is connected to one end of the drill rod (22); A movable support (3), wherein the movable support (3) is supported between the drill rod (22) and the guide rail (1), one end of the movable support (3) is slidably connected to the guide rail (1), and the other end of the movable support (3) is used to support the drill rod (22); A traction mechanism is used to pull the down-the-hole drill (2) to move along the guide rail (1).

2. A down-the-hole drilling equipment according to claim 1, characterized in that: It also comprises a connecting rope (31), one end of which is connected to the down-the-hole drill (2), and the other end of which is connected to the movable support (3).

3. A down-the-hole drilling equipment according to claim 2, characterized in that: The connecting rope (31) comprises a chain.

4. A down-the-hole drilling equipment according to claim 1, characterized in that: The traction mechanism comprises a winch (6), a cable is connected between the winch (6) and the down-the-hole drill (2), and the rotation of the winch (6) can drive the down-the-hole drill (2) to move along the guide rail (1).

5. A down-the-hole drilling equipment according to claim 4, characterized in that: The winch (6) comprises at least two coils of cable, at least one coil of the cable being used for pulling the down-the-hole drill (2) forward, and at least one coil of the cable being used for pulling the down-the-hole drill (2) backward.

6. A down-the-hole drilling device according to any one of claims 1 to 5, characterized in that: The movable support (3) comprises a limiting hole, and the limiting hole is clearance-matched with the outer wall of the drill rod (22).

7. A down-the-hole drilling device according to any one of claims 1 to 5, characterized in that: The number of the movable supports (3) is greater than one, and the movable supports (3) are distributed at intervals along the length direction of the guide rail (1).

8. A down-the-hole drilling device according to any one of claims 1 to 5, characterized in that: It also includes a fixed support (4), one end of which is fixed to one end of the guide rail (1) close to the drill bit (23), and the other end of which is used to support the drill rod (22).

9. A down-the-hole drilling device according to any one of claims 1 to 5, characterized in that: The guide rail (1) comprises a steel section component.

10. A down-the-hole drilling device according to any one of claims 1 to 5, characterized in that: It also comprises a vehicle body (5), the vehicle body (5) being connected to a support arm (51) arranged in a vertical direction, and the guide rail (1) being connected to the support arm (51).

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