A hydraulic rock drill

Abstract

The present invention relates to a hydraulic rock drill, comprising a chassis, a rock drill body and a driving mechanism, wherein the driving mechanism is fixedly placed in the chassis, a guide rail is arranged on one side of the chassis corresponding to the driving mechanism, and a first slider and a second slider that can move along the guide rail are arranged on the guide rail; a rack arranged axially along the guide rail is arranged on the first slider, and the output end of the driving mechanism is meshed with the rack; the rock drill body is placed on the second slider, and the rock drilling end of the rock drill body extends out of the chassis, and the other end of the rock drill body is fixedly connected to the rack through a buffer device; the driving mechanism drives the rack to move axially along the guide rail, and the rack drives the rock drill body to move axially along the guide rail through the buffer device, and the rock drilling end of the rock drill body extends out of the chassis for rock drilling. Compared with the prior art, the present invention uses a buffer device for buffering, and uses a backstop block and a backstop bar to prevent the rock drill body from retreating significantly, thereby extending the service life of the driving mechanism, the backstop block and the backstop bar.

Description

Technical Field

[0001] The present invention relates to the technical field of hydraulic rock drills, and in particular to a hydraulic rock drill. Background Art

[0002] In the prior art, there is a hydraulic rock drill with an application number of 201911248905.X and a backstop mechanism, which includes a slide fixedly connected to the rock drill body, a drill rod connected to the rock drill body, a slider fixed to the bottom of the slide, the slider is inserted into a slide rail arranged in the front and rear directions, and the two ends of the slide rail are respectively fixed to the front side wall and the rear side wall of the rectangular groove of the base; the base is provided with a driving mechanism for driving the slide to move forward and backward and a backstop mechanism for preventing the slide from sliding backward significantly during the forward movement. The present invention can be automatically advanced during the rock drilling process, and can effectively prevent the hydraulic rock drill from retreating significantly, reducing the work intensity of the workers, while improving the stability and efficiency of rock drilling.

[0003] However, the existing technical solutions still have many shortcomings: the structure is complicated, and the driving mechanism uses a pull rope to pull the slide to move, the pull rope is prone to wear and has a short service life; the anti-recoil effect is poor, and it relies on anti-recoil strips and anti-recoil blocks to prevent retreat, which can easily cause the anti-recoil strips and anti-recoil blocks to be subjected to excessive pressure, making the anti-recoil strips and anti-recoil blocks easily damaged. Summary of the invention

[0004] The present invention aims to solve at least one of the above technical problems in the prior art to a certain extent. To this end, one object of the present invention is to provide a hydraulic rock drill that can prevent the rock drill body from retreating significantly and prolong the service life of the driving mechanism, the stop block and the stop bar.

[0005] The technical solution of the present invention to solve the above technical problems is as follows: a hydraulic rock drill, comprising a chassis, a rock drill body and a driving mechanism, wherein the driving mechanism is fixedly placed in the chassis, a guide rail is arranged in the chassis at one side corresponding to the driving mechanism, and a first slider and a second slider movable along the guide rail are arranged on the guide rail; a rack arranged axially along the guide rail is arranged on the first slider, and an output end of the driving mechanism is meshed with the rack;

[0006] The rock drill body is fixedly placed on the second sliding block, and the rock drill body is arranged along the axial direction of the guide rail, the rock drilling end of the rock drill body extends out of the chassis, and the other end of the rock drill body is fixedly connected to the rack through a buffer device; the driving mechanism drives the rack to move axially along the guide rail, and the rack drives the rock drill body to move axially along the guide rail through the buffer device, and the rock drilling end of the rock drill body extends out of the chassis to perform rock drilling.

[0007] The beneficial effects of the present invention are: the rock drill body is rigidly driven by the driving mechanism to move and drill, and the buffer device is used for buffering, which simplifies the structure, can prevent the rock drill body from retreating significantly, and can effectively extend the service life of the driving mechanism.

[0008] Based on the above technical solution, the present invention can also be improved as follows.

[0009] Furthermore, the buffer device includes a box body, a first magnet plate and a second magnet plate, the first magnet plate and the second magnet plate are arranged in parallel with each other in the box body, and the first magnet plate is fixedly connected to the inner wall of the box body close to the rock drill body; a slide groove arranged axially along the guide rail is provided in the box body, the second magnet plate can be slidably placed in the slide groove, and the second magnet plate and the first magnet plate magnetically repel each other; a connecting shaft extending out of the box body is fixedly provided at one end of the second magnet plate away from the first magnet plate, and the second magnet plate is fixedly connected to the rack through the connecting shaft.

[0010] The beneficial effect of adopting the above further scheme is that the buffer device composed of the box body, the first magnet plate and the second magnet plate has a simple structure and a long service life, and can effectively buffer the retreat of the rock drill body and avoid rigid impact on the rack.

[0011] Furthermore, both ends of the rack are provided with anti-recognition strips fixedly connected to the bottom of the chassis, and the two anti-recognition strips are arranged along the axial direction of the rack; the upper ends of the box body corresponding to the two anti-recognition strips are provided with anti-recognition blocks, and the two anti-recognition blocks are fixedly connected to the box body through multiple springs, and the two anti-recognition blocks are respectively engaged with the two anti-recognition strips one by one; when the two anti-recognition blocks move from the box body to one end of the rock drill body, the two anti-recognition blocks are forced to compress the springs, and the two anti-recognition blocks are respectively separated from the two anti-recognition strips.

[0012] The beneficial effect of adopting the above further solution is that the anti-retraction strip performs unidirectional limiting movement on the anti-retraction block, thereby achieving unidirectional movement of the box body and the rock drill body, and preventing the rock drill body from retreating significantly.

[0013] Furthermore, each of the springs is provided with a limiting tube, each of the limiting tubes is fixedly connected to the lower end surface of the box body, and the length of the limiting tube along the vertical direction is shorter than the length of the spring along the vertical direction.

[0014] The beneficial effect of adopting the above further solution is that the limiting tube limits the spring so that the spring will not be twisted when compressed or extended, making the stop block move more smoothly in the vertical direction.

[0015] Furthermore, both sides of the guide rail are provided with limit plates arranged in parallel with each other at intervals, and the two limit plates are fixedly connected to the chassis; the rack, the rock drill body and the buffer device are all located between the two limit plates, and the rock drill body moves in a limited manner between the two limit plates.

[0016] The beneficial effect of adopting the above further solution is that the two limiting plates limit the rock drill body and the buffer device, so that the rock drill body and the buffer device move more smoothly along the guide rail.

[0017] Furthermore, the driving mechanism includes a motor and a reducer, and the motor and the reducer are both fixed in the chassis, and the output end of the motor is connected to the input end of the reducer; the output end of the reducer is connected to a rotating shaft, and the rotating shaft extends to the top of the rack, and the end of the rotating shaft away from the reducer is fixed with a set gear, and the gear is meshed with the rack; the motor drives the rotating shaft to rotate through the reducer, and the rotating shaft drives the rack to move through the gear.

[0018] The beneficial effect of adopting the above further solution is that the driving mechanism composed of the motor, the reducer, the rotating shaft and the gears has a simple structure and a long service life.

[0019] Furthermore, a bearing is mounted in the middle of the rotating shaft, a bearing seat is fixedly arranged in the chassis at a position corresponding to the rotating shaft, and the bearing is fixedly placed in the bearing seat.

[0020] The beneficial effect of adopting the above further solution is: the rotating shaft is supported by the bearing seat and the bearing, so that the rotating shaft rotates more smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a hydraulic rock drill of the present invention;

[0022] Figure 2 It is a structural schematic diagram of the buffer device of the present invention;

[0023] Figure 3 It is a structural schematic diagram of the rock drill body, the buffer device, the guide rail, the first slider, the second slider and the rack of the present invention;

[0024] Figure 4 for Figure 3 An enlarged schematic diagram of point A.

[0025] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0026] 1. Chassis, 2. Rock drill body;

[0027] 3. Driving mechanism, 3.1. Motor, 3.2. Reducer, 3.3. Rotating shaft, 3.4. Gear, 3.5. Bearing seat;

[0028] 4. Guide rail, 5. First slider, 6. Second slider, 7. Rack;

[0029] 8. Buffer device, 8.1. Box body, 8.2. First magnet plate, 8.3. Second magnet plate, 8.4. Slide groove, 8.5. Connecting shaft;

[0030] 9. Stop strip, 10. Stop block, 11. Spring, 12. Limiting tube, 13. Limiting plate. DETAILED DESCRIPTION

[0031] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0032] like Figures 1 to 4 As shown, a hydraulic rock drill comprises a chassis 1, a rock drill body 2 and a driving mechanism 3, wherein the driving mechanism 3 is fixedly placed in the chassis 1, a guide rail 4 is arranged on one side of the chassis 1 corresponding to the driving mechanism 3, and a first slider 5 and a second slider 6 movable along the guide rail 4 are arranged on the guide rail 4; a rack 7 arranged axially along the guide rail 4 is arranged on the first slider 5, and an output end of the driving mechanism 3 is meshed with the rack 7;

[0033] The rock drill body 2 is fixedly placed on the second slider 6, and the rock drill body 2 is arranged along the axial direction of the guide rail 4, the rock drilling end of the rock drill body 2 extends out of the chassis 1, and the other end of the rock drill body 2 is fixedly connected to the rack 7 through the buffer device 8; the driving mechanism 3 drives the rack 7 to move axially along the guide rail 4, and the rack 7 drives the rock drill body 2 to move axially along the guide rail 4 through the buffer device 8, and the rock drilling end of the rock drill body 2 extends out of the chassis 1 for rock drilling.

[0034] In the above embodiment, the buffer device 8 includes a box body 8.1, a first magnet plate 8.2 and a second magnet plate 8.3, the first magnet plate 8.2 and the second magnet plate 8.3 are arranged in parallel in the box body 8.1 with an interval, and the first magnet plate 8.2 is fixedly connected to the inner wall of the box body 8.1 close to the rock drill body 2; a slide groove 8.4 arranged axially along the guide rail 4 is provided in the box body 8.1, the second magnet plate 8.3 can be slidably placed in the slide groove 8.4, and the second magnet plate 8.3 and the first magnet plate 8.2 are magnetically repelled; a connecting shaft 8.5 extending from the box body 8.1 is fixedly provided at one end of the second magnet plate 8.3 away from the first magnet plate 8.2, and the second magnet plate 8.3 is fixedly connected to the rack 7 via the connecting shaft 8.5.

[0035] In the above embodiment, both ends of the rack 7 are provided with anti-recognition bars 9 fixedly connected to the bottom of the chassis 1, and the two anti-recognition bars 9 are arranged along the axial direction of the rack 7; the upper ends of the two anti-recognition bars 9 corresponding to the box body 8.1 are provided with anti-recognition blocks 10, and the two anti-recognition blocks 10 are fixedly connected to the box body 8.1 through multiple springs 11, and the two anti-recognition blocks 10 are respectively engaged with the two anti-recognition bars 9 one by one; when the two anti-recognition blocks 10 move toward one end of the rock drill body 2 in the box body 8.1, the two anti-recognition blocks 10 are forced to compress the springs 11, and the two anti-recognition blocks 10 are respectively separated from the two anti-recognition bars 9.

[0036] In the above embodiment, each of the springs 11 is provided with a limiting tube 12, each of the limiting tubes 12 is fixedly connected to the lower end surface of the box body 8.1, and the length of the limiting tube 12 along the vertical direction is shorter than the length of the spring 11 along the vertical direction.

[0037] In the above embodiment, both sides of the guide rail 4 are provided with limit plates 13 arranged in parallel at intervals, and the two limit plates 13 are fixedly connected to the chassis 1; the rack 7, the rock drill body 2 and the buffer device 8 are all located between the two limit plates 13, and the rock drill body 2 moves in a limited manner between the two limit plates 13.

[0038] In the above embodiment, the driving mechanism 3 includes a motor 3.1 and a reducer 3.2, and the motor 3.1 and the reducer 3.2 are both fixedly placed in the chassis 1, and the output end of the motor 3.1 is connected to the input end of the reducer 3.2; the output end of the reducer 3.2 is connected to a rotating shaft 3.3, and the rotating shaft 3.3 extends to the top of the rack 7, and the end of the rotating shaft 3.3 away from the reducer 3.2 is fixed with a set gear 3.4, and the gear 3.4 is engaged with the rack 7; the motor 3.1 drives the rotating shaft 3.3 to rotate through the reducer 3.2, and the rotating shaft 3.3 drives the rack 7 to move through the gear 3.4.

[0039] In the above embodiment, a bearing is mounted in the middle of the rotating shaft 3.3, a bearing seat 3.5 is fixedly arranged in the chassis 1 at a position corresponding to the rotating shaft 3.3, and the bearing is fixedly placed in the bearing seat 3.5.

[0040] In this embodiment, the motor 3.1 drives the rotating shaft 3.3 to rotate through the reducer 3.2, and the rotating shaft 3.3 drives the rack 7 to move through the gear 3.4; when the rack 7 moves toward one end of the rock drill body 2, the rack 7 pushes the rock drill body 2 to move through the buffer device 8, and the rock drilling end of the rock drill body 2 continues to extend out of the chassis 1, and uses the rock drilling end to drill rocks; wherein, during the movement of the rack 7 toward the rock drill body 2, the rack 7 drives the second magnet plate 8.3 to move along the slide groove 8.4 toward the first magnet plate 8.2 through the connecting shaft 8.5, and under the magnetic field force of the second magnet plate 8.3 and the first magnet plate 8.2, the first magnet plate 8.2 and the second magnet plate 8.3 maintain a distance; at the same time, the box body 8.1 drives the stop block 10 to move along the stop bar 9;

[0041] When the rock drill body 2 moves backward during the rock drilling process, the rock drill body 2 and the second slide block 6 move along the guide rail 4 toward one end of the rack 7, and the rock drill body 2 drives the box body 8.1 and the first magnet plate 8.2 to move, and the first magnet plate 8.2 moves toward one end of the second magnet plate 8.3. The spacing between the first magnet plate 8.2 and the second magnet plate 8.3 and the magnetic field force can effectively buffer the retreat of the rock drill body 2; at the same time, the engagement of the stop block 10 and the stop bar 9 can effectively stabilize the box body 8.1 and prevent the rock drill body 2 from retreating significantly;

[0042] In the present embodiment, the rock drill body 2 is driven to move by the driving mechanism 3, and the rock drill body 2 is used for rock drilling. When the rock drill body 2 retreats, the buffer device 8 is used for buffering, and the stop block 10 and the stop bar 9 are used to prevent the rock drill body 2 from retreating significantly. Through the cooperation of the buffer device 8, the stop block 10 and the stop bar 9, the force borne by the stop block 10 and the stop bar 9 can be effectively reduced, and the service life of the stop block 10 and the stop bar 9 can be extended; the driving mechanism 3 rigidly drives the rock drill body 2 to move, and at the same time uses the buffer device 8 for buffering, which can effectively extend the service life of the driving mechanism 3.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A hydraulic rock drill, comprising a housing (1), a rock drill body (2) and a driving mechanism (3), characterized in that: The driving mechanism (3) is fixedly placed in the chassis (1); a guide rail (4) is provided in the chassis (1) on a side corresponding to the driving mechanism (3); a first slider (5) and a second slider (6) movable along the guide rail (4) are provided on the guide rail (4); a rack (7) arranged axially along the guide rail (4) is provided on the first slider (5); an output end of the driving mechanism (3) meshes with the rack (7); The rock drill body (2) is fixedly placed on the second sliding block (6), and the rock drill body (2) is arranged along the axial direction of the guide rail (4), the rock drilling end of the rock drill body (2) extends out of the machine case (1), and the other end of the rock drill body (2) is fixedly connected to the rack (7) via a buffer device (8); the driving mechanism (3) drives the rack (7) to move along the axial direction of the guide rail (4), and the rack (7) drives the rock drill body (2) to move along the axial direction of the guide rail (4) via the buffer device (8), and the rock drilling end of the rock drill body (2) extends out of the machine case (1) to perform rock drilling; The buffer device (8) comprises a box body (8.1), a first magnet plate (8.2) and a second magnet plate (8.3), wherein the first magnet plate (8.2) and the second magnet plate (8.3) are arranged in parallel in the box body (8.1) at an interval, and the first magnet plate (8.2) is fixedly connected to the inner wall of the box body (8.1) close to the rock drill body (2); a slide groove (8.4) arranged axially along the guide rail (4) is provided in the box body (8.1), and the second magnet plate (8.3) is slidably placed in the slide groove (8.4), and the second magnet plate (8.3) and the first magnet plate (8.2) are magnetically repelled from each other; a connecting shaft (8.5) extending out of the box body (8.1) is fixedly provided at one end of the second magnet plate (8.3) away from the first magnet plate (8.2), and the second magnet plate (8.3) is fixedly connected to the rack (7) via the connecting shaft (8.5).

2. The hydraulic rock drill according to claim 1, characterized in that: Both ends of the rack (7) are provided with anti-recognition bars (9) fixedly connected to the bottom of the chassis (1), and the two anti-recognition bars (9) are arranged along the axial direction of the rack (7); the upper ends of the box body (8.1) corresponding to the two anti-recognition bars (9) are provided with anti-recognition blocks (10), and the two anti-recognition blocks (10) are fixedly connected to the box body (8.1) through a plurality of springs (11), and the two anti-recognition blocks (10) are respectively engaged with the two anti-recognition bars (9) in a one-to-one correspondence; when the two anti-recognition blocks (10) move toward one end of the rock drill body (2), the two anti-recognition blocks (10) are subjected to force to compress the springs (11), and the two anti-recognition blocks (10) are respectively separated from the two anti-recognition bars (9).

3. The hydraulic rock drill according to claim 2, characterized in that: A limiting tube (12) is mounted on each of the springs (11), each of the limiting tubes (12) is fixedly connected to the lower end surface of the box body (8.1), and the length of the limiting tube (12) along the vertical direction is shorter than the length of the spring (11) along the vertical direction.

4. The hydraulic rock drill according to claim 1, characterized in that: Limiting plates (13) are arranged in parallel and at intervals on both sides of the guide rail (4); the two limiting plates (13) are fixedly connected to the chassis (1); the rack (7), the rock drill body (2) and the buffer device (8) are all located between the two limiting plates (13); the rock drill body (2) moves in a limited manner between the two limiting plates (13).

5. The hydraulic rock drill according to claim 1, characterized in that: The driving mechanism (3) comprises a motor (3.1) and a reducer (3.2); the motor (3.1) and the reducer (3.2) are both fixedly placed in the chassis (1); the output end of the motor (3.1) is connected to the input end of the reducer (3.2); the output end of the reducer (3.2) is connected to a rotating shaft (3.3); the rotating shaft (3.3) extends above the rack (7); a gear (3.4) is fixedly mounted on one end of the rotating shaft (3.3) away from the reducer (3.2); the gear (3.4) is meshed with the rack (7); the motor (3.1) drives the rotating shaft (3.3) to rotate through the reducer (3.2); and the rotating shaft (3.3) drives the rack (7) to move through the gear (3.4).

6. The hydraulic rock drill according to claim 5, characterized in that: A bearing is sleeved in the middle of the rotating shaft (3.3), and a bearing seat (3.5) is fixedly arranged in the chassis (1) at a position corresponding to the rotating shaft (3.3), and the bearing is fixedly placed in the bearing seat (3.5).

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