CN204061362U - Efficient hydraulic rock drill - Google Patents
Efficient hydraulic rock drill Download PDFInfo
- Publication number
- CN204061362U CN204061362U CN201420421253.1U CN201420421253U CN204061362U CN 204061362 U CN204061362 U CN 204061362U CN 201420421253 U CN201420421253 U CN 201420421253U CN 204061362 U CN204061362 U CN 204061362U
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- oil
- communicated
- duct
- oil pocket
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Abstract
The utility model discloses a kind of efficient hydraulic rock drill, that above the valve body in piston striker, accumulator is set, and communicated with valve body oil suction chamber and front jar sheath oil pocket respectively by the first oil duct, front jar sheath oil pocket supports oil pocket by the 5th oil duct and rear cylinder sleeve and is connected, supporting oil pocket communicates with filler opening, the control oil pocket of spool is communicated with front jar sheath control hydraulic fluid port by the 3rd oil duct, the oil back chamber of valve body is communicated with rear cylinder sleeve oil pocket by the second oil duct, the oil return oil pocket of valve body is communicated with oil return oil duct, oil return oil duct is connected with the selector valve of rotating part, another control hydraulic fluid port of front jar sheath oil-feed tank after the 4th oil duct is communicated with spool oil pocket, in bit shank rotor, be provided with oil hydraulic motor and selector valve, selector valve one end is communicated with the oil return oil duct of piston striker, and the other end is communicated with oil hydraulic motor.The rock drill of this structure can not only solve the wear problem between impact piston and supporting, and piston wear is reduced; And the energy ezpenditure of impact part can be made to be converted to the power rotating part, greatly reduce energy consumption, improve working efficiency.
Description
Technical field
The utility model relates to engineering machinery, specifically a kind of efficient hydraulic rock drill.
Background technique
The working principle of current hydraulic gate is all utilize differential pressure action, forces impact piston in cylinder body, do high speed to-and-fro motion, to impact drill steel fractured rock.Because piston is high speed impact motion under High Pressure, very high to the structural requirement of the forward and backward guide sleeve that sealing structure of cylinder and supporting piston move, also very high to impact piston, bit shank, guide sleeve material processed and requirement on machining accuracy, therefore cause current hydraulic gate manufacture cost high, working service cost is high.
For this reason, applicant in this case once disclosed a kind of hydraulic gate with Chinese patent CN202970434U, and the first control hydraulic fluid port of the piston striker cylinder body of this machine is communicated with spool control oil pocket by the first oil duct; The valve body oil suction chamber of piston striker is communicated with cylinder after cylinder body by the second oil duct with oil back chamber, first control hydraulic fluid port and the second control hydraulic fluid port of cylinder body communicate, be provided with the 4th oil duct to communicate with front seal ring, increasing back sealing ring, the first oil back chamber, the second oil back chamber and the 3rd oil duct, be provided with high pressure oil import and be communicated with the valve body oil suction chamber in piston striker, piston ante-chamber respectively; Also be provided with supporting ring, bearing, sealing gasket be connected with the bit shank of bit shank rotor.The rock drill of this structure due to spool cross section different, when having return pressure or return pressure is higher, the mobile thrust of spool can be affected, causing spool operating frequency to reduce.Directly make the frequency of impact of piston reduce, also just make the efficiency of rock drill reduce.
Model utility content
The purpose of this utility model is for overcoming the deficiencies in the prior art, and provides a kind of efficient hydraulic rock drill, and the rock drill of this structure can not only solve the wear problem between impact piston and supporting, and piston wear is reduced; And the energy ezpenditure of impact part can be made to be converted to the power rotating part, greatly reduce energy consumption, improve working efficiency.
The technological scheme realizing the utility model object is:
A kind of efficient hydraulic rock drill, comprises piston striker and bit shank rotor, unlike the prior art:
Accumulator is provided with in piston striker, this accumulator is arranged on above valve body, and communicated with valve body oil suction chamber and front jar sheath oil pocket respectively by the first oil duct, front jar sheath oil pocket supports oil pocket by the 5th oil duct and rear cylinder sleeve and is connected, supporting oil pocket communicates with filler opening, the control oil pocket of spool is communicated with front jar sheath control hydraulic fluid port by the 3rd oil duct, the oil back chamber of valve body is communicated with rear cylinder sleeve oil pocket by the second oil duct, the oil return oil pocket of valve body is communicated with oil return oil duct, and oil return oil duct is connected with the selector valve of rotating part, another control hydraulic fluid port of front jar sheath oil-feed tank after the 4th oil duct is communicated with spool oil pocket.
In bit shank rotor, be provided with oil hydraulic motor and selector valve, case lid is connected with casing front end by bearing support, and selector valve one end is communicated with the oil return oil duct of piston striker, and the other end is communicated with oil hydraulic motor.Hydraulic motor output shaft drives small gear by driving shaft, is delivered to gearwheel, bit shank axle drive bit shank rotates.
Described selector valve is connected with the valve gap of piston striker.
The utility model has the advantages that:
1) the selector valve group of the impact part of this hydraulic gate normally can work under the situation that return pressure is high, and the commutation action of selector valve group is not by the impact of the pressure P2 of oil return.
2) bit shank rotates the oil hydraulic motor of part, and its input fluid is the oil return hydraulic oil impacting part, improves the utilization efficiency of input hydraulic pressure oil, reduces energy consumption.
3) interlock of part is rotated owing to impacting part and bit shank, bit shank non rotating during piston impact, when piston retreats, bit shank rotates, and the rotational action making the stroke of impact part and bit shank rotate part matches, improve rock drilling effect, reduce the consumption of drill bit.
4) high pressure oil forms the rear and front end of high-voltage oil cavity supporting piston by the oil pocket of front jar sheath, rear cylinder sleeve, and piston wear is reduced; Solve the wear problem between impact piston and supporting, rock drilling function is worked for a long time, uninterruptedly.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model piston striker embodiment 1;
Fig. 2 is the structural representation of the utility model bit shank rotor;
Fig. 3 is the structural representation of the utility model piston striker embodiment 2.
Graph: 1. The percussive piston 1 to 1. The piston 1-2. Before the cylinder liner 1-3. The sealing device before 1-4. After the cylinder liner 1-5. After sealing device 1-6. The body 1-7. Valve core 1-8. The cover 1 to 9. The first oil 1 to 10. The accumulator 1-11. The oil cavity 1-12. Vittae 2 1-13. Inlet 1-14. The oil return oil way 1-15. Oil return cavity 1-16. The oil cavity 1-17. The third oil 1-18. The valve core oil cavity 1-19. The fourth oil way 1-20. Oil cylinder cavity before Oil cylinder cavity after 1-21. 1-22. Oil cavity 1-23. 5 oil way 1-24. The bearing oil cavity 1 to 25. Containment mouth 2. The shank rotator 2 to 1. The body 2 - (2) lid 2-3. The pinion 2-4. The first bearing 2-5. Drive shaft 2-6. End cover 2-7. Big gear 2-8. The second bearing 2-9. Qian shaft 2-10. Shim 2 to 11. Cushion 2 to 12. Guide sleeve 2-13) lining 2-14. Bearing ring 2-15. Shanks 2-16) bearing seat 2-17. Hydraulic motor 2-18) tubing 2-19. Directional control valve.
Embodiment
Embodiment 1:
A kind of efficient hydraulic rock drill of the utility model, is made up of piston striker 1 and bit shank rotor 2 two-part, wherein:
With reference to Fig. 1, piston striker 1 is made up of piston 1-1, front jar sheath 1-2, front seal arrangement 1-3, rear cylinder sleeve 1-4, rear seal arrangement 1-5, valve body 1-6, spool 1-7, valve gap 1-8, the first oil duct 1-9, accumulator 1-10, oil suction chamber 1-11, the second oil duct 1-12, filler opening 1-13, oil return oil duct 1-14, oil back chamber 1-15, control oil pocket 1-16, the 3rd oil duct 1-17, spool oil pocket 1-18, the 4th oil duct 1-19, front cylinder oil pocket 1-20, rear cylinder oil pocket 1-21, oil pocket 1-22, the 5th oil duct 1-23, supporting oil pocket 1-24 and control hydraulic fluid port 1-25.P1 > P2, P0 are oil sump tank pressure.Spool 1-7 face area S3 > S2 > S1.Piston 1-1 is arranged in front jar sheath 1-2 and rear cylinder sleeve 1-4, before front seal arrangement 1-3 is arranged on front jar sheath 1-2, after rear seal arrangement 1-5 is arranged on rear cylinder sleeve 1-4, spool 1-7 and valve gap 1-8 is installed in valve body 1-6, accumulator 1-10 is arranged on above the high-voltage oil cavity of valve body 1-6, communicated with cylinder oil pocket 1-20 before the oil suction chamber 1-11 of valve body 1-6 and front jar sheath 1-2 respectively by the first oil duct 1-9, through the 5th oil duct 1-23 with after the supporting oil pocket 1-24 of cylinder sleeve be communicated to filler opening 1-13.3rd oil duct 1-17 is communicated with the control oil pocket 1-16 of spool 1-7 and the control hydraulic fluid port 1-25 of front jar sheath 1-2, and the second oil duct 1-12 is communicated with the oil back chamber 1-15 of valve body 1-6 and the rear cylinder oil pocket 1-21 of rear cylinder sleeve 1-4, and communicates with oil return oil duct 1-14 under the control of spool 1-6.Oil-feed tank after the control hydraulic fluid port 1-25 of the 4th oil duct 1-19 connection front jar sheath 1-2 and the oil pocket 1-18 of spool 1-7, oil return oil duct 1-14 is connected to selector valve 1-19, and oil pocket 1-18 connects selector valve 1-19 and oil hydraulic motor 1-17.
With reference to Fig. 2, bit shank rotor 2 is made up of casing 2-1, case lid 2-2, small gear 2-3, clutch shaft bearing 2-4, driving shaft 2-5, end cap 2-6, gearwheel 2-7, the second bearing 2-8, bit shank axle 2-9, parallels 2-10, cushion pad 2-11, guide sleeve 2-12, friction plate 2-13, supporting ring 2-14, bit shank 2-15, bearing support 2-16, oil hydraulic motor 2-17, oil pipe 2-18 and selector valve 2-19.Oil hydraulic motor 2-17 is arranged on casing 1 and connects with driving shaft 2-5.Driving shaft 2-5 installs small gear 2-3, is arranged in casing 2-1 by clutch shaft bearing 2-4 and end cap 2-6.Bit shank axle 2-9 installs gearwheel 2-7, and friction plate 2-13, the second bearing 2-8, be arranged in casing 1 by the second bearing 2-8 and bearing support 2-16.Case lid 2-2 is mounted on before casing 2-1 by bearing support 2-16.Bit shank 2-15 installing guide sleeve 2-12, supporting ring 2-14, cushion pad 2-11 and parallels 2-10, bit shank 2-15 afterbody inserts in bit shank axle 2-9, and anterior supporting by guide sleeve 2-12 is installed in case lid 2-2.
Its working principle is as follows: high pressure oil enters oil pocket 1-11 and accumulator 1-10 from import 1-13 through oil pocket 1-24, oil duct 1-23, oil pocket 1-20, oil duct 1-9, and due to spool 1-7, S2 > S1, spool 1-7 moves to left.Piston 1-1 moves right simultaneously, at this moment; Oil pocket 1-11 and oil pocket 1-15 cuts off, oil pocket 1-21, oil duct 1-12, and oil pocket 1-15 communicates with oil duct 1-14, and input hydraulic pressure oil some enters front jar sheath 1-2 oil pocket 1-20 promotion piston 1-1 and moves to right, and some enters accumulator 1-10.When piston 1-1 moves right certain distance, front jar sheath 1-2 is controlled hydraulic fluid port 1-25 and is communicated with spool control oil pocket 1-16 by oil duct 1-17, spool S3 > S2, promotes spool and moves right; At this moment, while spool 1-7 cuts off oil pocket 1-15 and back oil road 1-14, valve body 1-6 oil suction chamber 1-11 communicates with oil back chamber 1-15, is communicated with rear cylinder sleeve oil pocket 1-21 by oil duct 1-12.At this moment the hydraulic oil in input hydraulic pressure oil and accumulator 1-10, the hydraulic oil in front jar sheath 1-2 oil pocket 1-20 enters rear cylinder sleeve 1-4 oil pocket 1-21 simultaneously, promote piston 1-1 left high-speed mobile, obtain maximum kinetic energy.When piston 1-1 is moved to the left certain distance.The control hydraulic fluid port 1-25 of front jar sheath 1-2 communicates with oil duct 1-19, oil connects fuel tank in oil duct 1-19, valve body 1-6 is controlled oil pocket 1-16 pressure and is reduced to P0, spool 1-7 is moved to the left under the effect of oil pocket 1-11 high pressure oil, cut off oil suction chamber 1-11 and oil back chamber 1-15, open oil back chamber 1-15 and oil duct 1-14, rear cylinder sleeve 1-4 oil pocket 1-21 is communicated with return opening 1-14.At this moment, piston 1-1 moves right under front jar sheath 1-2 oil pocket 1-20 high pressure oil P1 effect, and rear cylinder sleeve 1-4 oil pocket 1-21 hydraulic oil exports through oil duct 1-14, and pressure is P2.Start next circulation.
Embodiment 2:
With reference to Fig. 3, rear cylinder sleeve 1-4 oil pocket 1-21 hydraulic oil passes through the endoporus of spool 1-7 from oil pocket 1-15 through oil duct 1-12, open oil return oil duct 1-14 from valve gap 1-8 and be connected to selector valve 2-19, all the other are with embodiment 1.
Claims (2)
1. an efficient hydraulic rock drill, comprises piston striker and bit shank rotor, it is characterized in that:
Accumulator is provided with in piston striker, this accumulator is arranged on above valve body, and communicated with valve body oil suction chamber and front jar sheath oil pocket respectively by the first oil duct, front jar sheath oil pocket supports oil pocket by the 5th oil duct and rear cylinder sleeve and is connected, supporting oil pocket communicates with filler opening, the control oil pocket of spool is communicated with front jar sheath control hydraulic fluid port by the 3rd oil duct, the oil back chamber of valve body is communicated with rear cylinder sleeve oil pocket by the second oil duct, the oil return oil pocket of valve body is communicated with oil return oil duct, oil return oil duct is connected with the selector valve of rotating part, another control hydraulic fluid port of front jar sheath oil-feed tank after the 4th oil duct is communicated with spool oil pocket,
In bit shank rotor, be provided with oil hydraulic motor and selector valve, case lid is connected with casing front end by bearing support, and selector valve one end is communicated with the oil return oil duct of piston striker, and the other end is communicated with oil hydraulic motor; Hydraulic motor output shaft drives small gear by driving shaft, is delivered to gearwheel, bit shank axle drive bit shank rotates.
2. efficient hydraulic rock drill according to claim 1, is characterized in that: described selector valve is connected with the valve gap of piston striker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420421253.1U CN204061362U (en) | 2014-07-29 | 2014-07-29 | Efficient hydraulic rock drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420421253.1U CN204061362U (en) | 2014-07-29 | 2014-07-29 | Efficient hydraulic rock drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204061362U true CN204061362U (en) | 2014-12-31 |
Family
ID=52202888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420421253.1U Withdrawn - After Issue CN204061362U (en) | 2014-07-29 | 2014-07-29 | Efficient hydraulic rock drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204061362U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104154050A (en) * | 2014-07-29 | 2014-11-19 | 李田生 | Efficient hydraulic rock drill |
-
2014
- 2014-07-29 CN CN201420421253.1U patent/CN204061362U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104154050A (en) * | 2014-07-29 | 2014-11-19 | 李田生 | Efficient hydraulic rock drill |
| CN104154050B (en) * | 2014-07-29 | 2016-04-27 | 李田生 | Efficient hydraulic rock drill |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141231 Effective date of abandoning: 20160427 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |