CN210509027U - Hydraulic-pneumatic linkage rock drill - Google Patents
Hydraulic-pneumatic linkage rock drill Download PDFInfo
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- CN210509027U CN210509027U CN201921639234.5U CN201921639234U CN210509027U CN 210509027 U CN210509027 U CN 210509027U CN 201921639234 U CN201921639234 U CN 201921639234U CN 210509027 U CN210509027 U CN 210509027U
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- drill
- shank
- cylinder body
- hydraulic motor
- impact
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Abstract
The utility model discloses a liquid-gas linkage rock drill, which relates to the technical field of rock drills and can comprise a rotating mechanism, an impact mechanism and a drill shank; the impact structure comprises a cylinder body, an impact piston is arranged in the cylinder body, and the impact piston is connected with the drill bit shank and is used for driving the drill bit shank to move back and forth; the rotary mechanism comprises a hydraulic motor, the hydraulic motor is arranged on the cylinder body, and the hydraulic motor drives the drill bit shank to rotate through a transmission gear. The utility model discloses combine the big advantage that strikes the frequency with pneumatic rock drill of hydraulic motor moment of torsion to be high, get the strong point and mend the weak point, make the bore bit tail by strikeing and rotatory two sets of system control and these two sets of systems act on the bore bit tail simultaneously, reach than the nearly more than 40% purpose of pure hydraulic rock drill and pure pneumatic rock drill totality energy-conservation.
Description
Technical Field
The utility model relates to a rock drill technical field especially relates to a liquid-gas linkage rock drill.
Background
The rock drill is a tool for directly exploiting stone materials; it drills blastholes in the rock formations to deposit explosives to blast the rock to complete the extraction of rock material or other stone work.
Existing rock drills generally employ pneumatic rock drills and hydraulic rock drills; the pneumatic rock drill drives the piston to impact forwards in the cylinder by compressed air, so that a steel chisel hits rocks, and the application is the widest; the hydraulic rock drill strikes the rock by impacting the drill steel through hydraulic pressure.
However, the existing pneumatic rock drills and hydraulic rock drills have low energy utilization rate and large energy consumption.
Therefore, there is a need to provide a new rock drilling machine to solve the above problems in the prior art.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a liquid pneumatic linkage rock drill to solve the problem that above-mentioned prior art exists, combine the big advantage high with pneumatic rock drill impact frequency of hydraulic motor moment of torsion, get the strong point and mend the weak point, make the bore bit tail by strikeing and rotatory two sets of system control and this two sets of systems act on the bore bit tail simultaneously.
In order to achieve the above object, the utility model provides a following scheme: the utility model provides a hydro-pneumatic linkage rock drill, which comprises a rotating mechanism, an impact mechanism and a drill bit shank; the impact structure comprises a cylinder body, an impact piston is arranged in the cylinder body, and the impact piston is connected with the drill bit shank and is used for driving the drill bit shank to move back and forth; the rotary mechanism comprises a hydraulic motor, the hydraulic motor is arranged on the cylinder body, and the hydraulic motor drives the drill bit shank to rotate through a transmission gear.
Preferably, one end of the cylinder body, which is far away from the impact piston, is provided with a gas distribution valve for distributing gas.
Preferably, a cylinder sleeve is arranged in the cylinder body, and the impact piston is arranged in the cylinder sleeve.
Preferably, the cylinder sleeve is provided with an exhaust hole for communicating with the atmosphere.
Preferably, the transmission gear comprises a driving gear and a driven gear which are in meshed connection, the driving gear is connected with the output end of the hydraulic motor, and the driven gear is connected with the drill shank.
Preferably, the driven gear is connected with the shank adapter through a spline.
Preferably, the drill shank is provided with a vent hole.
Preferably, the drill bit shank is sleeved with a water jacket for introducing an external flushing air source into the vent hole of the drill bit shank.
The utility model discloses for prior art gain following technological effect:
the utility model adopts the relatively independent mode of the hydraulic system and the pneumatic system, which can ensure that the liquid and the gas can not be mixed;
the advantages of large torque of a hydraulic motor and high impact frequency of the pneumatic rock drill are combined, the advantages of strong points and weak points are made up, so that the drill bit shank is controlled by two sets of systems through impact and rotation, and the two sets of systems simultaneously act on the drill bit shank; the reversing valve is adopted for air distribution during impact, the expansion of compressed air can be better utilized to do work, energy is saved, and the rotating drill mechanism adopts a hydraulic motor to drive the gear to drive the drill rod to rotate forward and backward;
the utility model discloses than pure hydraulic rock drill and pure pneumatic rock drill general energy-conservation nearly more than 40%.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of the hydraulic-pneumatic linkage rock drill of the present invention;
FIG. 2 is a schematic diagram of the impact mechanism of the present invention;
FIG. 3 is a schematic view of a rotating mechanism of the present invention;
wherein: 1. a hydraulic motor; 2. a box cover; 3. a driving gear; 4. a spline shaft; 5. a water jacket; 6. a drill shank; 7. a driven gear; 8. an impact piston; 9. a valve core; 10. a cylinder body; 11. a valve box; 12. an exhaust hole; 13. a rear cover; 14. a valve cover; 15. a cylinder liner; A. a, a gap; B. a port B; C. a cavity C; D. a cavity D; E. a cavity E; F. an air passage F; G. g gap.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model aims at providing a liquid pneumatic linkage rock drill to solve the problem that above-mentioned prior art exists, combine the big advantage high with pneumatic rock drill impact frequency of hydraulic motor moment of torsion, get the strong point and mend the weak point, make the bore bit tail by strikeing and rotatory two sets of system control and this two sets of systems act on the bore bit tail simultaneously.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
Example one
As shown in fig. 1 to 3, the present embodiment provides a hydro-pneumatic linkage rock drill, which includes a rotation mechanism, an impact mechanism and a shank adapter 6; the impact structure comprises a cylinder body 10, an impact piston 8 is arranged in the cylinder body 10, and the impact piston 8 is connected with the drill bit shank 6 and used for driving the drill bit shank 6 to move back and forth; the rotary mechanism comprises a hydraulic motor 1, the hydraulic motor 1 is installed on the cylinder body 10, and the hydraulic motor 1 drives the drill shank 6 to rotate through a transmission gear.
In this embodiment, an air distribution valve is installed at one end of the cylinder 10 away from the impact piston 8 for distributing air; the air distribution valve comprises a valve core 9, a valve box 11, a valve cover 14 and the like, and a rear cover 13 is arranged at the end part of the cylinder body 10.
Specifically, as shown in fig. 2, the gas distribution valve mainly comprises three parts: a valve box 11 (a valve core outer sleeve), a valve cover 14 and a valve core 9; high-pressure air enters the air distribution valve through an air vent on the rear cover 13, enters the air cylinder through a rear gap A of the valve core 9, pushes the impact piston 8 to move forwards, when the air enters the port B, the port B is communicated with the atmosphere, the rear cavity-cavity C of the impact piston 8 loses pressure, when the impact piston 8 moves forwards, air in the compressed D cavity enters the cavity E of the valve body through the air passage F, when the piston moves to the port B, the cavity C loses pressure, so the air pressure of the air passage F pushes the valve core 9 to move backwards to seal the gap A, the gap G is opened, at the moment, the high-pressure air enters the air passage F through the air vent of the rear cover 13 and the gap G to enter the cavity D to push the impact piston 8 to move backwards, meanwhile, the compressed C cavity opens the gap A to complete one cycle, and if the rear cover 13 continuously admits air, the.
In the present embodiment, a cylinder sleeve 15 is disposed in the cylinder block 10, and the impact piston 8 is disposed in the cylinder sleeve 15; the cylinder sleeve 15 is provided with an annular groove and an exhaust hole 12 which are communicated with an air vent on the cylinder body and are used for communicating the atmosphere.
In the embodiment, the transmission gear comprises a driving gear 3 and a driven gear 7 which are meshed and connected, the driving gear 3 is connected with the output end of the hydraulic motor 1, and the driven gear 7 is connected with the drill shank 6; in particular, the driven gear 7 is connected with the shank adapter 6 by splines.
In the embodiment, as shown in fig. 1, an impact piston 8 is located in a cylinder body 10, the impact piston 8 is driven to move back and forth through reversing of a gas distribution valve, the tail part of a drill rod 6 is struck to do work, the drill rod 6 is located in a gear box, a box cover 2 is arranged on the gear box, a hydraulic motor 1 drives a driving gear 3 in the gear box to drive a driven gear 7 to rotate, the driven gear 7 is sleeved outside a spline shaft 4, the drill rod 6 is driven to rotate through an internal spline and an external spline of the spline shaft 4, meanwhile, when the drill rod 6 is struck to do work by the impact piston 8, the drill rod can move back and forth along the internal spline of the spline shaft 4, and the cylinder body 10 is connected with the gear box through screws.
In the embodiment, the drill shank 6 is provided with a vent hole; the drill shank 6 is sleeved with a water jacket 5 for introducing an external flushing air source into the ventilation hole of the drill shank 6.
Specifically, as shown in fig. 3, an external flushing air source enters an inner hole of the water jacket 5 through a groove on the outer circle of the water jacket 5, enters a central air hole of the drill bit 6 through an upper air hole of the drill bit 6, and sealing rings are arranged on the outer circle and the inner hole of the water jacket 5 to seal air or flushing water entering the water jacket 5 from leaking.
The working principle of the impact mechanism in this embodiment is as follows:
(1) piston stroke
When the impact starts, the impact piston is arranged at the leftmost end, and at the moment, air pressure from the air hole reaches the left cavity of the cylinder body through the line of the line I to push the impact piston to form an impact stroke rightwards. At this time, the left cavity of the cylinder body is connected with the atmosphere through an exhaust hole (line II). When the right end cover of the impact piston passes through the air hole, the right end of the cylinder body is compressed to form an air cushion, and at the moment, the air is compressed to retract into the air chamber at the left end through a line IV. The impact piston continues to the right at this point. When the left end of the impact piston leaves the air hole, the air at the left end is exhausted through the exhaust hole, the air pressure of the left cavity of the cylinder body is suddenly reduced, and then the air chamber at the left end of the air distribution valve pushes the valve to move forwards, so that the valve and the valve sleeve are closed, the air path of the left cavity is cut off, and the stroke is finished.
(2) Piston return stroke
At the moment, the gas distribution valve and the valve sleeve are closed, the air pressure from the air hole reaches the right cavity of the cylinder body from the circuit III, the left cavity of the cylinder body is communicated with the atmosphere, the piston is pushed to the left by the air pressure, when the left end of the piston passes over the air exhaust hole, the air in the left cavity of the cylinder body is compressed to form an air cushion, the gas distribution valve is forced to move to the left, and at the moment, the piston continues to move to the left. When the right end of the piston leaves the exhaust hole, the air pressure in the right cavity of the exhaust cylinder body drops suddenly, the pressure at the left end of the air distribution valve is reduced due to the connection of the return hole, then the air chamber pressure in the left cavity of the cylinder body pushes the valve to move backwards, the valve and the valve cabinet are closed, and the return stroke is finished. The compressed air enters the left cavity of the air cylinder again and starts the next working cycle.
The working principle of the rotating mechanism in the embodiment is as follows:
the hydraulic system of the pump station provides pressure oil to drive the hydraulic motor, the hydraulic motor rotates to drive the driven wheel to rotate through the driving wheel, and then the driven wheel is connected with the drill bit shank through the spline of the driven wheel, so that the drill bit shank is driven to rotate, meanwhile, the air supply device is connected with the water jacket, the water jacket sealing ring guides an external flushing air source into a drill bit ventilation hole, and air is guided into the drill bit through the middle hole of the drill rod.
By adopting the structure, the embodiment can realize the following data:
(1) rotational torque (Nm): 500
(2) Rotation speed (r/min): 0-400 hydraulic pressure is adjustable
(3) Rotary pressure (Mpa) of 8-11
(4) Impact pressure (Mpa): 10
(5) And impact work: 335J
Through practical inspection, the aim that the hydro-pneumatic linkage rock drill can save energy by more than 40% compared with a pure hydraulic rock drill and a pure pneumatic rock drill.
The utility model discloses a concrete example is applied to explain the principle and the implementation mode of the utility model, and the explanation of the above example is only used to help understand the method and the core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (8)
1. A kind of liquid-gas linkage rock drill, characterized by: comprises a rotating mechanism, an impact mechanism and a drill shank; the impact mechanism comprises a cylinder body, an impact piston is arranged in the cylinder body, and the impact piston is connected with the drill bit shank and is used for driving the drill bit shank to move back and forth; the rotary mechanism comprises a hydraulic motor, the hydraulic motor is arranged on the cylinder body, and the hydraulic motor drives the drill bit shank to rotate through a transmission gear.
2. A hydro-pneumatic linkage rock drill according to claim 1, characterized in that: and an air distribution valve is arranged at one end of the cylinder body, which is far away from the impact piston, and is used for distributing air.
3. A hydro-pneumatic linkage rock drill according to claim 2, characterized in that: a cylinder sleeve is arranged in the cylinder body, and the impact piston is arranged in the cylinder sleeve.
4. A liquid-gas linkage rock drill according to claim 3, characterized in that: the cylinder sleeve is provided with an exhaust hole for communicating the atmosphere.
5. A hydro-pneumatic linkage rock drill according to claim 1, characterized in that: the transmission gear comprises a driving gear and a driven gear which are in meshed connection, the driving gear is connected with the output end of the hydraulic motor, and the driven gear is connected with the drill shank.
6. Hydro-pneumatic linkage rock drilling machine according to claim 5, characterized in that: the driven gear is connected with the drill shank through a spline.
7. A hydro-pneumatic linkage rock drill according to claim 1, characterized in that: the drill shank is provided with a vent hole.
8. Hydro-pneumatic linkage rock drilling machine according to claim 7, characterized in that: and the drill shank is sleeved with a water jacket for introducing an external flushing air source into the ventilation hole of the drill shank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921639234.5U CN210509027U (en) | 2019-09-29 | 2019-09-29 | Hydraulic-pneumatic linkage rock drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921639234.5U CN210509027U (en) | 2019-09-29 | 2019-09-29 | Hydraulic-pneumatic linkage rock drill |
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| Publication Number | Publication Date |
|---|---|
| CN210509027U true CN210509027U (en) | 2020-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921639234.5U Active CN210509027U (en) | 2019-09-29 | 2019-09-29 | Hydraulic-pneumatic linkage rock drill |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116498200A (en) * | 2022-11-17 | 2023-07-28 | 河北宏远液压机械有限公司 | External hydraulic rock drill of liquid cooling system |
-
2019
- 2019-09-29 CN CN201921639234.5U patent/CN210509027U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116498200A (en) * | 2022-11-17 | 2023-07-28 | 河北宏远液压机械有限公司 | External hydraulic rock drill of liquid cooling system |
| CN116498200B (en) * | 2022-11-17 | 2023-11-10 | 河北宏远液压机械有限公司 | External hydraulic rock drill of liquid cooling system |
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