CN219176907U - Hydraulic rock drill gear box with buffer device - Google Patents
Hydraulic rock drill gear box with buffer device Download PDFInfo
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- CN219176907U CN219176907U CN202223446879.1U CN202223446879U CN219176907U CN 219176907 U CN219176907 U CN 219176907U CN 202223446879 U CN202223446879 U CN 202223446879U CN 219176907 U CN219176907 U CN 219176907U
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- drill rod
- buffer
- cover
- oil
- sleeve
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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Abstract
The utility model discloses a hydraulic rock drill gear box with a buffer device, which combines a buffer cylinder body and a gear box body in the prior art through an optimal design, wherein a retaining sleeve is arranged in the box body, a buffer support sleeve and a drill rod spline sleeve are arranged in the retaining sleeve, a buffer oil cavity is arranged between the buffer support sleeve and the retaining sleeve, the rotation friction between a buffer core sleeve and a support sleeve in the prior art is avoided, the maintenance frequency is effectively reduced, the production cost is saved, and meanwhile, the size of the device is reduced, and the device is convenient to install and maintain.
Description
Technical Field
The utility model relates to the technical field of hydraulic rock drills, in particular to a hydraulic rock drill gearbox with a buffer device.
Background
The hydraulic rock drill is a new type rock drill for drilling holes in rock, which is mainly composed of impact mechanism, rotary mechanism, drill shank rebound buffer and drill shank, wherein the impact mechanism drives the drill shank to axially move to impact the rock, and the rotary mechanism drives the drill rod to rotate to keep the holes round.
At present, a drill shank rebound buffering device is arranged between a gear box of a rotary mechanism and an impact mechanism, referring to the accompanying figure 1, a buffering cylinder body 2 is arranged at the front end of the gear box body 1, a buffering oil cavity 4 is arranged between a buffering core sleeve 3 arranged in the buffering cylinder body 2 and the inner wall of the cylinder body of the buffering cylinder body 2, a supporting sleeve 5 arranged at the inner ring of a driven gear 6 in the gear box 1 is abutted against the buffering core sleeve 3, one end of a drill rod 7 is abutted against a working surface when in operation, the other end of the drill rod is abutted against the supporting sleeve 5, a piston rod of the impact mechanism intermittently impacts the buffering core sleeve 3 to push the drill rod 7 to axially move, and meanwhile, a driven gear 6 drives the drill rod 7 and the supporting sleeve 5 to rotate; therefore, the buffer core sleeve 3 and the support sleeve 5 are deformed axially, the contact surfaces of the buffer core sleeve 3 and the support sleeve are worn in a rotating way, a gap is formed between the buffer core sleeve and the support sleeve after a period of working, and the buffer core sleeve and the support sleeve must be replaced and maintained.
Disclosure of Invention
The present utility model aims to provide a hydraulic rock drill gearbox with a damping device, which solves the problems set forth in the background art.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the utility model provides a hydraulic rock drill gear box with buffer, includes the box, the one end of box is provided with the intercommunicating pore, and the end cover is installed to the other end, be provided with the holding sleeve in the box, the both ends that hold the cover are provided with roller bearing, roller bearing's inner circle and outer lane are connected with the inner wall that holds cover and box respectively, two hold between the roller bearing and overlap and be provided with driven gear, the inside that holds the cover is provided with buffering support cover and drill rod spline housing, the one end and the intercommunicating pore of buffering support cover are adjacent, be provided with the boss on the one end of buffering support cover, the boss constitutes the buffering oil pocket with the inner wall that holds the cover, be full of hydraulic oil in the buffering oil pocket, be provided with flexible chamber between buffering support cover and the drill rod spline housing, the internally mounted of drill rod spline housing has the drill rod, drill rod and drill rod spline housing keyway cooperation.
Still further, be provided with the oil filler groove on the inner wall of box, the oil filler groove communicates with the outside hydraulic system that sets up of box, the both sides of oil filler groove are provided with the sealing member, the both sides of sealing member support closely with the inner wall of keeping cover and box respectively and seal, two form the oil guide chamber between the sealing member, keep sheathe in and be provided with the oil filler point, oil filler point and buffer oil pocket are linked together.
Furthermore, two groups of sealing rings are arranged on the inner wall of the retaining sleeve, and the two groups of sealing rings are respectively arranged on two sides of the buffer oil cavity.
Furthermore, a drill rod anastomosis surface is arranged on the buffer support sleeve at one end of the telescopic cavity, and the drill rod anastomosis surface is matched with one end of the drill rod.
Further, a retaining cover is arranged at one end of the drill rod spline housing, which is far away from the buffer support housing.
The beneficial effects of the utility model are as follows:
according to the utility model, the retaining sleeve is arranged in the box body, the buffer supporting sleeve and the drill rod spline sleeve are arranged in the retaining sleeve, and the buffer oil cavity is arranged between the buffer supporting sleeve and the retaining sleeve, so that the rotation friction between the buffer core sleeve and the supporting sleeve in the prior art is avoided, the maintenance frequency is effectively reduced, the production cost is saved, and meanwhile, the size of the device is reduced, and the device is convenient to install and maintain.
Drawings
Fig. 1 is a schematic view of a gear box structure of a hydraulic rock drill according to the prior art.
Fig. 2 is a schematic structural view of a hydraulic rock drill gear box with a damping device according to the present utility model.
In the figure: the box body 1, the communication hole 101, the end cover 102, the oil injection groove 103, the buffer cylinder body 2, the buffer core sleeve 3, the buffer oil cavity 4, the support sleeve 5, the driven gear 6, the drill rod 7, the buffer support sleeve 8, the roller bearing 9, the drill rod spline sleeve 10, the retaining cover 11, the buffer support sleeve 12, the boss 121, the oil injection hole 13, the sealing element 14, the oil guide cavity 141, the sealing ring 15 and the telescopic cavity 16.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
Example 1
Referring to fig. 2, the present utility model provides a technical solution: a hydraulic rock drill gear box with a buffer device comprises a box body 1, a retaining sleeve 8 is arranged in the box body 1, a communication hole 101 is formed in one end of the box body 1, an end cover 102 is arranged at the other end of the box body, the communication hole 101 is communicated with an impact mechanism, roller bearings 9 are arranged at two ends of the retaining sleeve 8, an inner ring and an outer ring of each roller bearing 9 are respectively connected with the outer side of the retaining sleeve 8 and the inner wall of the box body 1, a driven gear 6 is arranged on the retaining sleeve 8 between the two roller bearings 9, a driving gear of a slewing mechanism is meshed with the driven gear 6 to drive the retaining sleeve 8 to rotate during operation, a buffer support sleeve 12 and a drill rod spline sleeve 10 are arranged in the retaining sleeve 8, the drill rod spline sleeve 10 is matched with a drill rod 7 through a key groove, a telescopic cavity 16 is arranged between the buffer support sleeve 12 and the drill rod spline sleeve 10 at intervals, a drill rod anastomosis surface 17 which is matched with one end of the drill rod 7 is arranged on the buffer support sleeve 12, during operation, the drill rod 7 is abutted against the drill rod anastomosis surface 17 through the telescopic cavity 16, a piston rod of the impact buffer support sleeve 12 of the impact mechanism pushes the drill rod 7 to axially move, when the buffer support sleeve 7 is separated from the drill rod spline sleeve 10 and the drill rod spline sleeve 11 is conveniently installed on the drill rod spline sleeve 11, and the buffer support sleeve 11 is conveniently kept away from the end of the drill rod 11 when the buffer support sleeve is maintained and is kept away from the drill rod 11.
The buffer oil cavity 4 is formed by the boss 121 and the inner wall of the holding sleeve 8, the oil filling hole 13 is formed in the holding sleeve 8, the oil filling groove 103 is formed in the inner wall of the box body 1, sealing pieces 14 are arranged on two sides of the oil filling groove 103, two sides of the sealing pieces 14 are respectively abutted against the inner wall of the holding sleeve 8 and the inner wall of the box body 1 to be tightly sealed, an oil guiding cavity 141 is formed between the two sealing pieces 14, the oil guiding cavity 141 is communicated with the oil filling groove 103, the oil filling hole 13 is used for communicating the buffer oil cavity 4 with the oil guiding cavity 141, the oil filling groove 103 is communicated with a hydraulic system arranged outside the box body 1, so that the pressure in the buffer oil cavity 4 is kept, the holding sleeve 8 rotates in the box body 1 when the device works, the sealing pieces 14 and the box body 1 keep a relatively static state, and when the drill rod 7 rebounds, the boss 121 compresses hydraulic oil in the buffer oil cavity 4 to absorb kinetic energy of the rebound of the drill rod 7.
Two groups of sealing rings 15 are arranged on the inner wall of the retaining sleeve 8, and the two groups of sealing rings 15 are respectively arranged on two sides of the buffer oil cavity 4 to prevent hydraulic oil in the buffer oil cavity from overflowing when the pressure is increased.
The working principle is as follows: compared with the prior art, the utility model reduces the volume of the device and is convenient for installation and maintenance by combining and optimally designing the buffer cylinder body and the gear box body, meanwhile, the buffer support sleeve 12 does not generate rotation friction with the drill rod 7 during working, thereby avoiding abrasion between the buffer support sleeve 12 and the drill rod 7, effectively reducing maintenance frequency and saving production cost.
The present utility model is not limited to the above-mentioned embodiments, and any person skilled in the art, based on the technical solution of the present utility model and the inventive concept thereof, can be replaced or changed within the scope of the present utility model.
Claims (5)
1. The utility model provides a hydraulic rock drill gear box with buffer, includes the box, the one end of box is provided with the intercommunicating pore, the end cover is installed to the other end of box, its characterized in that: the inside of box is provided with keeps the cover, keep the both ends of cover to be provided with roller bearing, roller bearing's inner circle and outer lane respectively with keep the cover with the inner wall connection of box, two keep and overlap and be provided with driven gear between the roller bearing keep, keep the inside of cover to be provided with buffering support cover and drill rod spline housing, buffering support cover one end with the intercommunicating pore is adjacent, buffering support cover one end is provided with the boss, the boss with keep the inner wall constitution buffering oil pocket of cover, buffering oil pocket is filled with hydraulic oil, buffering support cover with be provided with flexible chamber between the drill rod spline housing, the internally mounted of drill rod spline housing has the drill rod, the drill rod with drill rod spline housing cooperation.
2. A hydraulic rock drill gearbox with damping means according to claim 1, characterized in that: the oil filling device comprises a box body, and is characterized in that an oil filling groove is formed in the inner wall of the box body and is communicated with a hydraulic system arranged outside the box body, sealing pieces are arranged on two sides of the oil filling groove, two sides of each sealing piece are respectively tightly sealed with the inner wall of the box body in an abutting mode, an oil guide cavity is formed between the two sealing pieces, an oil filling hole is formed in the retaining sleeve, and the oil filling groove, the oil guide cavity, the oil filling hole and the buffer oil cavity are communicated.
3. A hydraulic rock drill gearbox with damping means according to claim 1 or 2, characterized in that: two groups of sealing rings are arranged on the inner wall of the retaining sleeve, and the two groups of sealing rings are respectively arranged on two sides of the buffer oil cavity.
4. A hydraulic rock drill gearbox with damping means according to claim 3, characterized in that: the buffer support sleeve at one end of the telescopic cavity is provided with a drill rod anastomosis surface, and the drill rod anastomosis surface is matched with one end of the drill rod.
5. A hydraulic rock drill gearbox with damping means according to claim 4, characterized in that: and a retaining cover is arranged at one end of the drill rod spline housing, which is far away from the buffer support housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223446879.1U CN219176907U (en) | 2022-12-22 | 2022-12-22 | Hydraulic rock drill gear box with buffer device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223446879.1U CN219176907U (en) | 2022-12-22 | 2022-12-22 | Hydraulic rock drill gear box with buffer device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219176907U true CN219176907U (en) | 2023-06-13 |
Family
ID=86665250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223446879.1U Active CN219176907U (en) | 2022-12-22 | 2022-12-22 | Hydraulic rock drill gear box with buffer device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219176907U (en) |
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2022
- 2022-12-22 CN CN202223446879.1U patent/CN219176907U/en active Active
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