CN102373881B - Hydraulic impact bearing mechanism for hydraulic rock drill - Google Patents
Hydraulic impact bearing mechanism for hydraulic rock drill Download PDFInfo
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- CN102373881B CN102373881B CN2011102973416A CN201110297341A CN102373881B CN 102373881 B CN102373881 B CN 102373881B CN 2011102973416 A CN2011102973416 A CN 2011102973416A CN 201110297341 A CN201110297341 A CN 201110297341A CN 102373881 B CN102373881 B CN 102373881B
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Abstract
The invention discloses a hydraulic impact bearing mechanism for a hydraulic rock drill. The hydraulic impact bearing mechanism comprises a 1# friction plate, a cylinder pin, a 4# friction plate and a bit shank spline shaft, wherein the 1# friction plate is fixed together with a tank cover through the cylinder pin. The hydraulic impact bearing mechanism is characterized by further comprising a circular nut, a front thrust cylindrical roller bearing, a back thrust cylindrical roller bearing, a back bearing, a back needle roller bearing, an oil hole, a hermetical oil cavity, a U-shaped seal and an O-shaped seal. The hydraulic impact bearing mechanism has the advantages of reasonable structure, convenience for detaching and maintaining and long service life; and the service life of the entire hydraulic rock drill is greatly prolonged, the trouble of frequent replacement of the rock drill is reduced for an application unit, the labor intensity of workers is lowered, the economic loss is reduced simultaneously, and the economic benefit is brought.
Description
Technical field
The present invention relates to a kind of punch mechanism that holds, particularly a kind of hydraulic gate hydraulic pressure holds punch mechanism.
Background technology
At present, domestic hydraulic gate holds punch mechanism, is all that sliding friction, machinery hold punching.This structure hold punch mechanism, its friction is held impulse face and is difficult to enter lubrication oil, buffering not again while being subject to impacting; Therefore rubbing surface easily weares and teares, hold that stamping easily cracks and until broken, thereby affected the application life of hydraulic gate complete machine.In addition, this holds punch mechanism dismounting inconvenience, and the layman is difficult to safeguard, therefore to applying unit, brings many economic losses, has also increased maintenance personal's labour intensity and unnecessary trouble simultaneously.
As shown in Figure 1, for existing hydraulic gate rotating mechanism, on this hydraulic gate rotating mechanism, bit shank 1 ' is arranged, dust cap 35, water jacket nut 2 ', cushion pad 3 ', water jacket 4 ', case lid 5 ', bit shank pad 6 ', cylindrical bearing 8 ', two gears 9 ', driving gear splined shaft 10 ', casing 11 ', ball bearing 12 ', motor 13 ', coupling sleeve 14 ', rear bearing 16 ', 4# friction plate 23 ', 3# friction plate 24 ', 2# friction plate 27 ', 1# friction plate 28 ', bit shank splined shaft 26 ', fore bearing 31 ', front straight pin 39, rear straight pin 38, front flat key 36 and rear flat key 37, wherein, case lid 5 ', casing 11 ', driving gear splined shaft 10 ', two gears 9 ', cylindrical bearing 8 ' and ball bearings 12 ' form the bit shank drive part, water jacket 4 ', cushion pad 3 ', bit shank pad 6 ', water jacket nut 2 ', dust cap 35, fore bearing 31 ', rear bearing 16 ' and coupling sleeve 14 ' form the bit shank targeting part, 1# friction plate 28 ', front straight pin 39,2# friction plate 27 ', 3# friction plate 24 ', front flat key 36, rear flat key 37,4# friction plate 23 ', rear straight pin 38 and bit shank splined shaft 26 ' formation are held and are rushed part, hold punch mechanism.At this hydraulic gate, hold on punch mechanism, bit shank splined shaft 26 ' also plays bit shank driving effect simultaneously; 1# friction plate 28 ' is fixed into one by front straight pin 39 with case lid 5 ', and 4# friction plate 23 ' is fixed into one by rear straight pin 38 with casing 11 '; 2# friction plate 27 ' and 3# friction plate 24 ' are fixed into one by front flat key 36 and rear flat key 37 with bit shank splined shaft 26 ' respectively.Its operating principle of holding punch mechanism is: motor 13 ' drives driving gear splined shaft 10 ' and two gears 9 ' rotate, and two gears 9 ' drive bit shank splined shaft 26 ' and bit shank 1 ' rotation.When bit shank 1 ' is clashed in piston 15 ' preshoot, after bit shank 1 ' clashes into rock, 3# friction plate 24 ' and 4# friction plate 23 ' are clashed in bounce-back, and 3# friction plate 24 ' is sliding friction with the contact surface of 4# friction plate 23 ', and bears the rebounce of bit shank 1 ', be difficult to enter lubrication oil between contact surface because of 3# friction plate 24 ' and 4# friction plate 23 ', cause 3# friction plate 24 ' and 4# friction plate 23 ' when rotated, its contact surface very easily weares and teares, and 3# friction plate 24 ' and 4# friction plate 23 ' buffering not when withstanding shocks, thus easily crack and until broken, thus cause the hydraulic gate machine life short, have again, when the bounce of bit shank 1 ' is clashed into 3# friction plate 24 ' and 4# friction plate 23 ', 3# friction plate 24 ' has absorbed most vibrations with 4# friction plate 23 ', the vibrations of few part are clashed into 2# friction plate 27 ' and 1# friction plate 28 ' by 4# friction plate 23 ' and 3# friction plate 24 ', again because 2# friction plate 27 ' is also sliding friction with the contact surface of 1# friction plate 28 ', be difficult to enter lubrication oil between it, so although 2# friction plate 27 ' is less with the impact that 1# friction plate 28 ' bears, not fragile, contact surface between 2# friction plate 27 ' and 1# friction plate 28 ' still has certain wearing and tearing.In addition, it holds punch mechanism dismounting inconvenience, and is difficult to safeguard, therefore to applying unit, brings many economic losses, has also increased maintenance personal's labour intensity and unnecessary trouble simultaneously.
Be more than the deficiencies in the prior art.
Summary of the invention
The objective of the invention is: overcome the deficiencies in the prior art, design a kind of rational in infrastructure, convenient disassembly, be convenient to safeguard, the hydraulic gate hydraulic pressure of long service life holds punch mechanism, this hydraulic pressure holds economic loss and maintenance personal's labour intensity and the unnecessary trouble that punch mechanism has reduced applying unit.
Purpose of the present invention can realize by following technical proposals:
This hydraulic gate hydraulic pressure holds punch mechanism, comprise 1# friction plate, straight pin, 4# friction plate and bit shank splined shaft, the 1# friction plate is fixed together by straight pin and case lid, it is characterized in that: this hydraulic pressure holds punch mechanism and also comprises round nut, forward thrust cylinder roller bearing, back pressure cylinder roller bearing, rear bearing, rear needle bearing, oilhole, airtight oil pocket, U-shaped sealing and the sealing of O type, the 4# friction plate is arranged between casing and rear bearing, the bit shank splined shaft is arranged between fore bearing and front needle bearing and rear bearing and rear needle bearing, round nut is arranged on the first shoulder hole place of casing, the forward thrust cylinder roller bearing is arranged on the bit shank splined shaft, and be positioned at the back-end location of 1# friction plate, the back pressure cylinder roller bearing is arranged on the bit shank splined shaft, and be positioned at the front position of 4# friction plate, rear bearing is arranged in casing, rear needle bearing is arranged on the inner peripheral surface of rear bearing, be provided with oilhole on the bearing support of rear bearing, between 4# friction plate and rear bearing, the airtight oil pocket be connected with oilhole is arranged, U-shaped sealing is loaded in the airtight oil pocket in rear end of 4# friction plate, the sealing of O type is loaded on the outer circumference surface of rear bearing.
The present invention has the oil guide groove I on the 4# friction plate; On the bit shank splined shaft, the 2nd shoulder place has the oil guide groove II.
Advantage of the present invention is: this hydraulic pressure holds that punch mechanism is rational in infrastructure, convenient disassembly, be convenient to safeguard, long service life; Thereby, greatly extended application life of hydraulic gate complete machine, reduced the trouble that applying unit is frequently changed hammer drill, alleviated workman's labour intensity, also reduced economic loss simultaneously, brought economic benefit.
The accompanying drawing explanation
Fig. 1 is existing hydraulic gate rotating mechanism sectional view;
Fig. 2 is hydraulic gate rotating mechanism sectional view of the present invention;
Fig. 3 is the A section enlarged drawing of Fig. 2.
The specific embodiment
As Fig. 2, shown in 3, on hydraulic gate rotating mechanism of the present invention, bit shank 1 is arranged, water jacket nut 2, cushion pad 3, water jacket 4, case lid 5, bit shank pad 6, end cap 7, cylindrical bearing 8, gear 9, driving gear splined shaft 10, casing 11, ball bearing 12, motor 13, coupling sleeve 14, rear bearing 16, oilhole 17, rear rotatory sealing 18, O type sealing 19, airtight oil pocket 20, rear needle bearing 21, U-shaped sealing 22, 4# friction plate 23, back pressure cylinder roller bearing 24, round nut 25, bit shank splined shaft 26, forward thrust cylinder roller bearing 27, 1# friction plate 28, front needle bearing 29, front rotatory sealing 30, fore bearing 31, Sealing shield ring 32 and straight pin 33, wherein, case lid 5, casing 11, end cap 7, driving gear splined shaft 10, gear 9, cylindrical bearing 8 and ball bearing 12 form the bit shank drive part, water jacket 4, cushion pad 3, bit shank pad 6, water jacket nut 2, fore bearing 31, Sealing shield ring 32, front rotatory sealing 30, front needle bearing 29, rear rotatory sealing 18 and coupling sleeve 14 form the bit shank targeting part, round nut 25,1# friction plate 28, straight pin 33,4# friction plate 23, forward thrust cylinder roller bearing 27, back pressure cylinder roller bearing 24, rear bearing 16, rear needle bearing 21, oilhole 17, airtight oil pocket 20, U-shaped sealing 22, the sealing 19 of O type and bit shank splined shaft 26 formation hydraulic pressure hold and rush part, and hydraulic pressure holds punch mechanism.
On this hydraulic gate rotating mechanism, the pass that is linked and packed of each component is: bit shank 1 is positioned at the rotating mechanism centre position, there are case lid 5 and casing 11 in the outside of bit shank 1, case lid 5 is fixed together by screw I 40 and casing 11, end cap 7 is fixed together by four screw II 41 and case lid 5, round nut 25 is arranged on the first shoulder hole place of casing 11, water jacket nut 2 is arranged on the front end of case lid 5 by internal thread, water jacket 4 is arranged on case lid 5 Inner Front End positions, in the front-end and back-end of case lid 5 inner water sleeves 4, cushion pad 3 and bit shank pad 6 are installed respectively, fore bearing 31 is arranged in case lid 5, Sealing shield ring 32, front rotatory sealing 30 and front needle bearing 29 are arranged on the inner peripheral surface of fore bearing 31 from front to back successively, rear bearing 16 is arranged in casing 11, coupling sleeve 14 is loaded on the rear end inner peripheral surface of rear bearing 16, rear needle bearing 21 and rear rotatory sealing 18 are arranged on the inner peripheral surface of rear bearing 16 from front to back successively, bit shank splined shaft 26 is arranged between fore bearing 31 and front needle bearing 29 and rear bearing 16 and rear needle bearing 21, driving gear splined shaft 10 is arranged in casing 11, and supported by cylindrical bearing 8 and ball bearing 12, the internal spline of driving gear splined shaft 10 is connected with the splined shaft of motor 13, the external splines of driving gear splined shaft 10 is connected with gear 9, gear 9 and 26 engagements of bit shank splined shaft, 1# friction plate 28 is fixed together by straight pin 33 and case lid 5, 4# friction plate 23 is arranged between casing 11 and rear bearing 16, forward thrust cylinder roller bearing 27 is arranged on bit shank splined shaft 26, and be positioned at the back-end location of 1# friction plate 28, back pressure cylinder roller bearing 24 is arranged on bit shank splined shaft 26, and be positioned at the front position of 4# friction plate 23, be provided with oilhole 17 on the bearing support of rear bearing 16, between 4# friction plate 23 and rear bearing 16, the airtight oil pocket 20 be connected with oilhole 17 is arranged, in the airtight oil pocket 20 in the rear end that U-shaped sealing 22 is loaded on 4# friction plate 23, O type sealing 19 is loaded on the outer circumference surface of rear bearing 16.On bit shank splined shaft 26, the 2nd shoulder place has oil guide groove II 34; Have oil guide groove I 42 on 4# friction plate 23.
As shown in Figure 2,3, this hydraulic gate hydraulic pressure holds punch mechanism, comprise 1# friction plate 28, straight pin 33,4# friction plate 23 and bit shank splined shaft 26,1# friction plate 28 is fixed together by straight pin 33 and case lid 5, it is characterized in that: this hydraulic pressure holds punch mechanism and also comprises round nut 25, forward thrust cylinder roller bearing 27, back pressure cylinder roller bearing 24, rear bearing 16, rear needle bearing 21, oilhole 17, airtight oil pocket 20, U-shaped sealing 22 and O type sealing 19, 4# friction plate 23 is arranged between casing 11 and rear bearing 16, bit shank splined shaft 26 is arranged between fore bearing 31 and front needle bearing 29 and rear bearing 16 and rear needle bearing 21, round nut 25 is arranged on the first shoulder hole place of casing 11, forward thrust cylinder roller bearing 27 is arranged on bit shank splined shaft 26, and be positioned at the back-end location of 1# friction plate 28, back pressure cylinder roller bearing 24 is arranged on bit shank splined shaft 26, and be positioned at the front position of 4# friction plate 23, rear bearing 16 is arranged in casing 11, rear needle bearing 21 is arranged on the inner peripheral surface of rear bearing 16, be provided with oilhole 17 on the bearing support of rear bearing 16, between 4# friction plate 23 and rear bearing 16, the airtight oil pocket 20 be connected with oilhole 17 is arranged, in the airtight oil pocket 20 in the rear end that U-shaped sealing 22 is loaded on 4# friction plate 23, O type sealing 19 is loaded on the outer circumference surface of rear bearing 16.Have oil guide groove I 42 on 4# friction plate 23; On bit shank splined shaft 26, the 2nd shoulder place has oil guide groove II 34.
At this hydraulic gate hydraulic pressure, hold on punch mechanism, rear bearing 16 also plays the bit shank guide effect simultaneously with rear needle bearing 21; Bit shank splined shaft 26 also plays bit shank driving effect simultaneously.
The operating principle that this hydraulic gate hydraulic pressure holds punch mechanism is: motor 13 drives driving gear splined shaft 10 and gear 9 rotates, and gear 9 drives bit shank splined shaft 26 and bit shank 1 rotation.When bit shank 1 is clashed in piston 15 preshoots, after clashing into rock, bit shank 1 rebounds, and clashing into back pressure cylinder roller bearing 24 and 4# friction plate 23 by bit shank splined shaft 26, back pressure cylinder roller bearing 24 is rolling friction with the contact surface of 4# friction plate 23, and bears the rebounce of bit shank 1, very easily enter lubrication oil between contact surface because of back pressure cylinder roller bearing 24 and 4# friction plate 23, therefore back pressure cylinder roller bearing 24 and 4# friction plate 23 are when rotated, its contact surface lubricated sufficient, wear and tear minimum, and now, hydraulic oil enters in the airtight oil pocket 20 by U-shaped sealing 22 and O type sealing 19 sealings by oilhole 17, when bit shank 1 clashes into bit shank splined shaft 26 by bounce, and then while clashing into back pressure cylinder roller bearing 24 and 4# friction plate 23, bounce acts on the hydraulic oil in airtight oil pocket 20 by 4# friction plate 23, and hydraulic oil has cushioning effect, so 4# friction plate 23 can not be damaged, in addition, when the bounce of bit shank 1 is clashed into back pressure cylinder roller bearing 24 with 4# friction plate 23 by bit shank splined shaft 26, because the hydraulic oil of 20 li of airtight oil pockets has absorbed most vibrations, the vibrations of few part are by 4# friction plate 23, back pressure cylinder roller bearing 24 and bit shank splined shaft 26 clash into forward thrust cylinder roller bearing 27 and 1# friction plate 28, again because forward thrust cylinder roller bearing 27 is also rolling friction with the contact surface of 1# friction plate 28, therefore also very easily enter lubrication oil between the contact surface of forward thrust cylinder roller bearing 27 and 1# friction plate 28, and then, contact surface between forward thrust cylinder roller bearing 27 and 1# friction plate 28 is also lubricated sufficient, wear and tear minimum, so forward thrust cylinder roller bearing 27 is not fragile even without the hydraulic oil buffering with 1# friction plate 28 yet.Have again, because holding punch mechanism, this hydraulic gate hydraulic pressure also has oil guide groove I 42 on 4# friction plate 23, on bit shank splined shaft 26, the 2nd shoulder place has oil guide groove II 34, when gear oil flows according to the direction of arrow shown in Fig. 3, just taken away rear needle bearing 21 and bit shank splined shaft 26 at middle the produced heat that rotatablely moves, thereby the application life of having improved widely rear needle bearing 21.
Claims (1)
1. a hydraulic gate hydraulic pressure holds punch mechanism, comprise 1# friction plate (28), straight pin (33), 4# friction plate (23), bit shank splined shaft (26) and rear bearing (16), 1# friction plate (28) is fixed together by straight pin (33) and case lid (5), rear bearing (16) is arranged in casing (11), it is characterized in that: this hydraulic pressure holds punch mechanism and also comprises round nut (25), forward thrust cylinder roller bearing (27), back pressure cylinder roller bearing (24), rear needle bearing (21), oilhole (17), airtight oil pocket (20), U-shaped sealing (22) and O type sealing (19), 4# friction plate (23) is arranged between casing (11) and rear bearing (16), bit shank splined shaft (26) is arranged between fore bearing (31) and front needle bearing (29) and rear bearing (16) and rear needle bearing (21), round nut (25) is arranged on the first shoulder hole place of casing (11), forward thrust cylinder roller bearing (27) is arranged on bit shank splined shaft (26), and be positioned at the back-end location of 1# friction plate (28), back pressure cylinder roller bearing (24) is arranged on bit shank splined shaft (26), and be positioned at the front position of 4# friction plate (23), rear needle bearing (21) is arranged on the inner peripheral surface of rear bearing (16), be provided with oilhole (17) on the bearing support of rear bearing (16), between 4# friction plate (23) and rear bearing (16), the airtight oil pocket (20) be connected with oilhole (17) is arranged, U-shaped sealing (22) is loaded in the airtight oil pocket in rear end (20) of 4# friction plate (23), O type sealing (19) is loaded on the outer circumference surface of rear bearing (16), have oil guide groove I (42) on 4# friction plate (23), at bit shank splined shaft (26), upper the 2nd shoulder place has oil guide groove II (34).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102973416A CN102373881B (en) | 2011-09-29 | 2011-09-29 | Hydraulic impact bearing mechanism for hydraulic rock drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102973416A CN102373881B (en) | 2011-09-29 | 2011-09-29 | Hydraulic impact bearing mechanism for hydraulic rock drill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102373881A CN102373881A (en) | 2012-03-14 |
| CN102373881B true CN102373881B (en) | 2013-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102973416A Active CN102373881B (en) | 2011-09-29 | 2011-09-29 | Hydraulic impact bearing mechanism for hydraulic rock drill |
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| CN (1) | CN102373881B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108468617B (en) * | 2018-05-28 | 2023-07-04 | 河北宏远液压机械有限公司 | Hydraulic rock drill with built-in rotary power output |
| 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 |
| CN116292847A (en) * | 2023-02-28 | 2023-06-23 | 徐州徐工基础工程机械有限公司 | Nested transmission structure of hydraulic rock drill and assembly method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3547208A (en) * | 1968-05-17 | 1970-12-15 | Westinghouse Air Brake Co | Percussive tool |
| US3921731A (en) * | 1973-08-02 | 1975-11-25 | Atlas Copco Ab | Hydraulic impact device |
| US4576240A (en) * | 1981-10-19 | 1986-03-18 | Kabushiki Kaisha Komatsu Seisakusho | Hydraulic impact device |
| US4815546A (en) * | 1987-04-02 | 1989-03-28 | W-N Apache Corporation | Top head drive assembly with axially movable quill |
| US4957171A (en) * | 1989-04-24 | 1990-09-18 | Cannon Industries, Inc. | Pneumatic drill |
| CN101624897A (en) * | 2009-08-06 | 2010-01-13 | 河北宏远液压机械有限公司 | Full-automatic hydraulic inverse-drilling rock drilling machine |
| CN201605996U (en) * | 2010-02-11 | 2010-10-13 | 桂林穿孔公司 | Friction sheet hydraulic jack drill rotating mechanism |
| CN202273586U (en) * | 2011-09-29 | 2012-06-13 | 河北宏远液压机械有限公司 | Hydraulic bearing and punching mechanism of hydraulic rock drilling machine |
-
2011
- 2011-09-29 CN CN2011102973416A patent/CN102373881B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3547208A (en) * | 1968-05-17 | 1970-12-15 | Westinghouse Air Brake Co | Percussive tool |
| US3921731A (en) * | 1973-08-02 | 1975-11-25 | Atlas Copco Ab | Hydraulic impact device |
| US4576240A (en) * | 1981-10-19 | 1986-03-18 | Kabushiki Kaisha Komatsu Seisakusho | Hydraulic impact device |
| US4815546A (en) * | 1987-04-02 | 1989-03-28 | W-N Apache Corporation | Top head drive assembly with axially movable quill |
| US4957171A (en) * | 1989-04-24 | 1990-09-18 | Cannon Industries, Inc. | Pneumatic drill |
| CN101624897A (en) * | 2009-08-06 | 2010-01-13 | 河北宏远液压机械有限公司 | Full-automatic hydraulic inverse-drilling rock drilling machine |
| CN201605996U (en) * | 2010-02-11 | 2010-10-13 | 桂林穿孔公司 | Friction sheet hydraulic jack drill rotating mechanism |
| CN202273586U (en) * | 2011-09-29 | 2012-06-13 | 河北宏远液压机械有限公司 | Hydraulic bearing and punching mechanism of hydraulic rock drilling machine |
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| CN102373881A (en) | 2012-03-14 |
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