Novel down-the-hole drill for stone mine

Abstract

The novel down-the-hole drill for the stone mine relates to the technical field of down-the-hole drills and comprises a fixed shell and a rotating pipe, the rotating pipe is rotationally arranged in the fixed shell, a first square hole is formed in the inner wall of the rotating pipe, a square rod is arranged in the first square hole in a matched and sliding sleeved mode, and a first through hole is formed in the square rod. A drill rod is fixedly arranged at the lower end of the square rod, a transmission mechanism for driving the rotating pipe to rotate is arranged in the fixing shell, a limiting shell is rotationally arranged on the upper side of the fixing shell, second square holes are formed in the two sides of the middle of a limiting hole, and the upper end of the square rod penetrates through the two second square holes. And a limiting mechanism for limiting the longitudinal movement of the square rod is arranged in the limiting shell. The length of the drill rod can be adjusted, the drill rod does not need to be detached and replaced when drilling work of different depths needs to be carried out, and work efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of down-the-hole drills, in particular to a novel down-the-hole drill for stone mines. Background Art

[0002] Down-the-hole drills are widely used in blasting hole drilling operations in metallurgy, coal, building materials, railways, hydropower construction, national defense construction, earthwork and other engineering projects. Compared with common rock drills, down-the-hole drills have the characteristics of deep drilling, large drilling diameter, high drilling efficiency and wide adaptability. They are currently the most commonly used large-scale rock drilling equipment.

[0003] The drill rods of traditional down-the-hole drills used in stone mines are usually installed in fixed positions. Therefore, when drilling holes at different depths, the original drill rods need to be disassembled and installed with drill rods of appropriate lengths, which greatly affects work efficiency. Utility Model Content

[0004] In view of the above problems existing in the existing down-the-hole drill for stone mines, the present utility model is proposed.

[0005] Therefore, the purpose of the utility model is to provide a new type of down-the-hole drill for stone mines, which solves the problem that the drill rod of the down-the-hole drill for stone mines in the prior art is usually installed in a fixed position. Therefore, when drilling holes of different depths, it is necessary to disassemble the original drill rod and install a drill rod of suitable length, which greatly affects the work efficiency.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A new type of down-the-hole drill for stone mines comprises a fixed shell and a rotating tube, the rotating tube is rotatably arranged inside the fixed shell, a first square hole is opened on the inner wall of the rotating tube, a square rod is matched and slidingly sleeved inside the first square hole, a drill rod is fixedly arranged on the lower end of the square rod, a transmission mechanism for driving the rotating tube to rotate is arranged inside the fixed shell, a limit shell is rotatably arranged on the upper side of the fixed shell, second square holes are opened on both sides of the middle part of the limit shell, the upper end of the square rod passes through two of the second square holes, and a limit mechanism for limiting the longitudinal movement of the square rod is arranged inside the limit shell.

[0008] Preferably, the transmission mechanism includes a first bevel gear and a second bevel gear, the first bevel gear is fixedly sleeved on the outer wall of the rotating tube, the inner wall of one side of the fixed shell is rotatably set on the transmission rod, the second bevel gear is fixedly sleeved on the inner end of the transmission rod, the first bevel gear is meshingly connected with the second bevel gear, and a motor is fixedly set on the outer wall of one side of the fixed shell, and the output end of the motor is fixedly connected to one end of the transmission rod.

[0009] Preferably, the limiting mechanism includes a rotating block and a threaded rod, rotating rods are rotatably arranged on both sides of the inner part of the limiting shell, the rotating block is fixedly sleeved on the rod wall of the rotating rod, both side walls of the rear of the square rod are provided with slots, one end of the rotating block is engaged with the corresponding slots, threaded holes are provided on both sides of the limiting shell, the threaded rod is threadedly sleeved inside the corresponding threaded holes, a socket is provided on the end of the rotating block away from the square rod, and one end of the threaded rod is plugged into the socket.

[0010] Preferably, a rotating wheel is fixedly sleeved on one outer end of the threaded rod.

[0011] Preferably, the motor is fixedly connected to the fixed shell via a support frame.

[0012] Preferably, the drill rod and the square rod are integrally formed.

[0013] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0014] 1. The utility model drives the transmission rod to rotate through the motor, so that the second bevel gear drives the first bevel gear to rotate, which can drive the rotating tube to rotate, that is, drive the square rod to rotate, and then drive the drill rod to rotate, that is, stable drilling work can be performed.

[0015] 2. The utility model separates the threaded rod from the rotating block by rotating the threaded rod, that is, releases the separation of the rotating block, and then rotates the rotating block with the rotating rod as the axis to separate the rotating block from the square rod, that is, can release the limit on the square rod, that is, can move the square rod longitudinally in the rotating tube, and then can adjust the drilling depth of the drill rod without changing different drill rods, which is easy to operate and saves time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0017] Figure 1 This is a schematic diagram of the structure of a new type of down-the-hole drill for stone mines proposed by the utility model;

[0018] Figure 2 for Figure 1 A schematic diagram of the structure of the local A part;

[0019] Figure 3 for Figure 1 A stereogram of the rotating tube.

[0020] Description of reference numerals:

[0021] 1. Fixed shell; 2. Rotating tube; 3. Square rod; 4. Drill rod; 5. First bevel gear; 6. Transmission rod; 7. Second bevel gear; 8. Motor; 9. Limiting shell; 10. Rotating rod; 11. Rotating block; 12. Threaded rod. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0023] The utility model embodiment discloses a novel down-the-hole drill for stone mines.

[0024] Reference Figure 1-3 A new type of down-the-hole drill for stone mines includes a fixed shell 1 and a rotating tube 2. The rotating tube 2 is rotatably arranged inside the fixed shell 1. A first square hole is opened on the inner wall of the rotating tube 2. A square rod 3 is provided in a matching sliding sleeve inside the first square hole. A drill rod 4 is fixedly arranged at the lower end of the square rod 3. The drill rod 4 and the square rod 3 are integrally formed to improve the connection strength between the drill rod 4 and the square rod 3. A limit shell 9 is rotatably arranged on the upper side of the fixed shell 1. Second square holes are opened on both sides of the middle of the limit shell. The upper end of the square rod 3 passes through the two second square holes.

[0025] Reference Figure 1-3 A transmission mechanism for driving the rotating tube 2 to rotate is arranged inside the fixed shell 1, and the transmission mechanism includes a first bevel gear 5 and a second bevel gear 7. The first bevel gear 5 is fixedly sleeved on the outer wall of the rotating tube 2, and the inner wall of one side of the fixed shell 1 is rotatably arranged on the transmission rod 6. The second bevel gear 7 is fixedly sleeved on the inner end of the transmission rod 6. The first bevel gear 5 is meshed with the second bevel gear 7. A motor 8 is fixedly arranged on the outer wall of one side of the fixed shell 1, and the output end of the motor 8 is fixedly connected to one end of the transmission rod 6. The motor 8 is fixedly connected to the fixed shell 1 through a support frame, so that the connection between the motor 8 and the fixed shell 1 is more stable.

[0026] Reference Figure 1-3 A limiting mechanism for limiting the longitudinal movement of the square rod 3 is arranged inside the limiting shell 9, and the limiting mechanism includes a rotating block 11 and a threaded rod 12. Rotating rods 10 are rotatably arranged on both sides of the limiting shell 9, and the rotating block 11 is fixedly sleeved on the rod wall of the rotating rod 10. Slots are provided on both side walls of the rear of the square rod 3, and one end of the rotating block 11 is engaged with the corresponding slots. Threaded holes are provided on both sides of the limiting shell, and the threaded rod 12 is threadedly sleeved inside the corresponding threaded holes. A socket is provided at the end of the rotating block 11 away from the square rod 3, and one end of the threaded rod 12 is plugged into the socket. A rotating wheel is fixedly sleeved on the outer end of the threaded rod 12 to facilitate the rotation of the threaded rod 12.

[0027] In the utility model, when in use, the motor 8 drives the transmission rod 6 to rotate, so that the second bevel gear 7 drives the first bevel gear 5 to rotate, and then can drive the rotating tube 2 to rotate, that is, drive the square rod 3 to rotate, and then can drive the drill rod 4 to rotate, that is, can perform stable drilling work, rotate the threaded rod 12, so that the threaded rod 12 is separated from the rotating block 11, that is, release the separation of the rotating block 11, and then rotate the rotating block 11 with the rotating rod 10 as the axis, so that the rotating block 11 is separated from the square rod 3, that is, can release the limit on the square rod 3, that is, can move the square rod 3 longitudinally in the rotating tube 2, and then can adjust the drilling depth of the drill rod 4, no need to replace different drill rods 4, easy operation, time saving and labor saving.

[0028] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A novel down-the-hole drill for stone mines, comprising a fixed shell (1) and a rotating tube (2), characterized in that: The rotating tube (2) is rotatably arranged inside the fixed shell (1); a first square hole is provided on the inner wall of the rotating tube (2); a square rod (3) is provided inside the first square hole in a matching sliding sleeve; a drill rod (4) is fixedly arranged at the lower end of the square rod (3); a transmission mechanism for driving the rotating tube (2) to rotate is provided inside the fixed shell (1); a limit shell (9) is rotatably arranged on the upper side of the fixed shell (1); second square holes are provided on both sides of the middle part of the limit shell; the upper end of the square rod (3) passes through the two second square holes; a limit mechanism for limiting the longitudinal movement of the square rod (3) is provided inside the limit shell (9).

2. The new down-the-hole drill for stone mines according to claim 1 is characterized in that: The transmission mechanism comprises a first bevel gear (5) and a second bevel gear (7); the first bevel gear (5) is fixedly sleeved on the outer wall of the rotating tube (2); an inner wall of one side of the fixed housing (1) is rotatably arranged on the transmission rod (6); the second bevel gear (7) is fixedly sleeved on an inner end of the transmission rod (6); the first bevel gear (5) and the second bevel gear (7) are meshingly connected; a motor (8) is fixedly arranged on the outer wall of one side of the fixed housing (1); and an output end of the motor (8) is fixedly connected to one end of the transmission rod (6).

3. The new down-the-hole drill for stone mines according to claim 1 is characterized in that: The limiting mechanism comprises a rotating block (11) and a threaded rod (12). The rotating rods (10) are rotatably arranged on both sides of the inner part of the limiting shell (9). The rotating block (11) is fixedly sleeved on the rod wall of the rotating rod (10). The rear side walls of the square rod (3) are provided with slots. One end of the rotating block (11) is clamped with the corresponding slot. The limiting shell is provided with threaded holes on both sides. The threaded rod (12) is threadedly sleeved inside the corresponding threaded holes. The rotating block (11) is provided with a plug hole at one end away from the square rod (3). One end of the threaded rod (12) is plugged into the plug hole.

4. The new down-the-hole drill for stone mines according to claim 3 is characterized in that: A rotating wheel is fixedly sleeved on one outer end of the threaded rod (12).

5. The new down-the-hole drill for stone mines according to claim 2 is characterized in that: The motor (8) is fixedly connected to the fixed shell (1) via a support frame.

6. The new down-the-hole drill for stone mines according to claim 1 is characterized in that: The drill rod (4) and the square rod (3) are integrally formed and manufactured.

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