CN101927478B - Hydraulic impact equipment - Google Patents
Hydraulic impact equipment Download PDFInfo
- Publication number
- CN101927478B CN101927478B CN200910148032.5A CN200910148032A CN101927478B CN 101927478 B CN101927478 B CN 101927478B CN 200910148032 A CN200910148032 A CN 200910148032A CN 101927478 B CN101927478 B CN 101927478B
- Authority
- CN
- China
- Prior art keywords
- distributor
- communicated
- piston
- hydraulic impact
- chamber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
- E02D7/02—Placing by driving
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
- E02D7/02—Placing by driving
- E02D7/06—Power-driven drivers
- E02D7/10—Power-driven drivers with pressure-actuated hammer, i.e. the pressure fluid acting directly on the hammer structure
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
- E02D7/02—Placing by driving
- E02D7/06—Power-driven drivers
- E02D7/14—Components for drivers inasmuch as not specially for a specific driver construction
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F5/00—Dredgers or soil-shifting machines for special purposes
- E02F5/30—Auxiliary apparatus, e.g. for thawing, cracking, blowing-up, or other preparatory treatment of the soil
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F5/00—Dredgers or soil-shifting machines for special purposes
- E02F5/30—Auxiliary apparatus, e.g. for thawing, cracking, blowing-up, or other preparatory treatment of the soil
- E02F5/305—Arrangements for breaking-up hard ground
Abstract
The invention relates to hydraulic impact equipment, comprising a body (3). The body comprises a cylinder (2), wherein an impact piston (1) is slidably arranged in the cylinder, and is driven by hydraulic pressure through incompressible fluid in a reciprocating way; motion of the impact piston (1) is controlled by a distributor (6) which is accommodated in a distribution case (7); the distribution case is arranged in the body of the equipment; and the distribution case (7) and the distributor (6) at least partially are limited to a closed cavity (17) which is invariably connected to a high pressure supply pipeline (12) through at least one calibration hole (18).
Description
Technical field
The present invention relates to hydraulic impact equipment.
Background technology
Impact device comprises body, and this body comprises cylinder, in cylinder, be provided with impact piston slidably, and this impact piston passes through incompressible fluid in complex way by hydraulic-driven.The distributor that moves through of piston controls, and this distributor opens and closes the fluid pressure line for the particular cavity be positioned on piston either side being communicated with low pressure line with pressure duct continuously, to produce this orderly reciprocating motion.
By known methods, the motion of distributor self is on the one hand by one or more passage leading to the cylinder of piston, on the other hand by one or more passage being connected to low pressure line, controls.Therefore, the control of distributor motion depends on piston position in its cylinder.
Distributor is a mechanical part, and it wants Charpy piston light, and distributor is running the shorter of the run duration Charpy piston on stroke.This makes the connection quickly switching the pipeline acted on impact piston become possibility, such as when piston is when the top dead centre of its stroke, its chamber of carrying out impact stroke (and being referred to as top chamber) is made to be switched to high pressure from low pressure rapidly by acting on piston, or on the contrary, when piston impact instrument and when then must start its upward stroke, the chamber making this identical is switched to low pressure from high pressure rapidly.The cross section of the speed dependent that distributor obtains in its stroke in its weight, chamber of working of moving to it, be present in the pressure of the motion of control dispenser in passage and be typically used as the viscosity of oil of incompressible fluid.
This causes many shortcomings.
Therefore, especially, when piston starts in its impact stroke, in advance top chamber is switched to low pressure and can produces sizable cavitation, internal part is worn and torn, and produce knocking in the whole hydraulic means supporting machine.Further, when piston is near its top dead centre, the speed that distributor is too low will cause piston movement to switch delaying, and then piston can exceed its normal stroke and also impacts the stopper section supported in body.
Therefore, it is possible to the movement velocity of control dispenser and then piston can be acted on make its chamber of carrying out impact stroke be placed in the moment be communicated with pressure duct with low pressure line respectively by fine adjustment, be important for the reliability of equipment and service life.
Summary of the invention
The object of the present invention is to provide hydraulic impact equipment, wherein the movement velocity of distributor can control in a straightforward manner.
Therefore, the present invention relates to a kind of hydraulic impact equipment, it comprises body, this body comprises cylinder, be provided with impact piston slidably in cylinder, this impact piston is by incompressible fluid in complex way by hydraulic-driven, and the distributor be contained in distributor box that moves through of impact piston controls, this distributor box is installed in the body of this equipment, it is characterized in that: described distributor box and distributor limit the closed cavity being connected to high-pressure feed road via at least one calibration hole consistently at least in part.
By regulating the size of calibration hole, the movement velocity of the flow velocity and then distributor that are fed to the oil of closed cavity can control in a straightforward manner, thus impact piston just in time arrive its to the impact zone of instrument after, distributor to be placed in the chamber making it and carry out impact stroke to be communicated with acting on impact piston with low pressure return line, and when when piston has arrived its top dead centre, distributor to be placed in the chamber making it and carry out impact stroke to be communicated with acting on impact piston with high-pressure feed road.
Therefore, be placed in the chamber enabling it and carry out impact stroke the moment be communicated with high-pressure feed road with low pressure return line separately accurately regulate when acting on impact piston.
Cavitation is avoided, this is because in the impact stroke of piston, acts on impact piston and is supplied in whole piston movement with the chamber making it and carry out impact stroke.
The risk that impact piston exceeds its normal upward stroke is also avoided, and this prevent the damage of the body to impact piston and equipment.
What it should be noted that calibration hole and closed cavity is arranged so that the movement velocity of distributor in its up and down stroke declines.
Preferably, closed cavity is connected to high-pressure feed road consistently via at least one calibration hole, and described calibration hole is arranged in the wall limiting this closed cavity.
Preferably, this hydraulic test comprises the distribution lid leaned against on described distributor box one end, and described closed cavity is limited by this distributor box, distributor and distribution lid.
Advantageously, described distributor has tube, and this tube is closed towards the end distributing lid by diapire, and this diapire limits this closed cavity with distributor box together with distributing and covering.
Preferably, the tube of described distributor and diapire limit center cavity, and this center cavity is communicated to described high-pressure feed road consistently.
Advantageously, the diapire of described distributor has at least one calibration hole, preferably axial, is communicated to described closed cavity on the one hand, is communicated to described center cavity on the other hand.
According to feature of the present invention, described distribution lid has access portal, and described distributor has extension, preferably axial, setting is used for extending through this access portal and giving prominence to from access portal, and the part that described distribution lid and extension are given prominence to from this access portal limits the chamber being communicated to low pressure return line consistently at least partly.
According to another feature of the present invention, this equipment comprises the passage that described closed cavity is communicated to high-pressure feed road by consistently, and this channel setting has at least one calibration hole.
Preferably, described distributor box has at least one calibration hole, and described calibration hole is communicated in described closed cavity on the one hand, is communicated to the passage being connected to high-pressure feed road on the other hand.
Advantageously, described distributor box and distributor are defined for the chamber of the motion controlling described distributor, and this control chamber is connected in alternating fashion to high-pressure feed road and low pressure return line.
Preferably, described piston and cylinder limit at least one top chamber, and under the effect of described distributor, this top chamber is connected in alternating fashion to high-pressure feed road and low pressure return line, and bottom chamber is connected to high-pressure feed road consistently.
According to another feature of the present invention, described body and piston limit rear chamber, and this rear chamber is relative with described bottom chamber and be full of gas-pressurized.
Accompanying drawing explanation
In a word, the explanation by reference to attached schematic diagram is better understood by the present invention, and this explanation gives an embodiment of the nonrestrictive example as this equipment.
Fig. 1 to 4 is the longitdinal cross-section diagrams of this hydraulic test being in different use location.
Fig. 5 is the sectional view of the distributor of the different embodiments of hydraulic test according to Fig. 1.
Detailed description of the invention
Hydraulic impact equipment shown in Fig. 1 comprises the impact piston 1 be slidably mounted in complex way in cylinder 2, and this cylinder 2 is arranged in the body 3 of equipment.In its reciprocatory movement, piston 1 is installed on the top of the instrument O in hole 4 with being designed for impact-sliding, and hole 4 and cylinder 2 are arranged in body 3 coaxially.The body 3 of equipment is closed by the rear head 5 be arranged on cylinder 2.
This hydraulic impact equipment also comprises the distributor 6 be slidably mounted in distributor box 7, and this distributor box is arranged in the body 3 of equipment.The supply of the incompressible fluid of this distributor 6 pairs of equipment is worked, to cause the reciprocating motion of impact piston 1.This distributor 6 has tube 6a, and tube is closed towards the end of rear head 5 by diapire 6b.This distributor 6 also has the axial extension 6c extended from diapire 6b.
This hydraulic impact equipment also comprises the distribution lid 8 axially leaned against on distributor box 7 top.This distribution lid 8 has access portal 9, and the axial extension 6c of distributor 6 is designed to extend through access portal 9 and gives prominence to from this access portal 9.
Piston 1 and cylinder 2 and rear head 5 limit at least three chambeies:
Actuator chamber 10, it is positioned at above piston 1, and extends in rear head 5, this actuator chamber 10 gas-pressurized abrim;
Relative annular chamber 11, its cross-sectional surface is long-pending less, and is always communicated with high-pressure feed road 12; With
Annular actuator chamber 13, it is communicated with distributor box 7 via passage 14, thus when distributor 6 changes position, this passage 14 and then be that this actuator chamber 13 is alternately communicated with high-pressure feed road 12 or low pressure return line 15.
The reciprocating motion of piston 1 is alternately communicated with low pressure return line 15 with high-pressure feed road 12 by actuator chamber 13 so that the adjoining land of making a concerted effort be applied on piston 1 is provided and realizes on one and another direction.
In the embodiment shown in the drawings, distributor 6 and distributor box 7 and distribute lid 8 and together define four actuator chambers:
Back cavity 16, it is communicated with low pressure return line 15 consistently via channel C 1;
Closed annular chamber 17, it is communicated with high-pressure feed road 12 all the time via one or more calibration hole 18, described calibration hole 18 is arranged in distributor box 7, and is communicated to this closed chamber 17 on the one hand, is communicated to the channel C 2 be connected with high-pressure feed road 12 on the other hand;
Center cavity 19, it is communicated with high-pressure feed road 12 consistently via passage 20; With
For the chamber 21 of the motion of control dispenser 6, this control chamber 21 is annular, and facing to chamber 17.
Distributor 6 and distributor box 7 also limit the annular chamber 22 with low pressure return line 15 constant communication.
This hydraulic impact equipment also comprises hydraulic control device, and hydraulic control device arranges the triggering of the motion being used for control dispenser 6.These control device comprise at least one cannelure 23 being arranged on control piston 1 in cylinder 2 and the passage 24 being communicated to cannelure 23 and control chamber 21 respectively.
Piston 1 is included in the cannelure 25 of its central part and reduces district 26 at its cross section towards the end of instrument O.
According to the position of piston 1, on the one hand can set up being communicated with of control chamber 21 and low pressure return line 15 via passage 24, cannelure 23, cannelure 25 and passage 27, set up being communicated with of control chamber 21 and high-pressure feed road 12 via passage 24, cannelure 23, the annular chamber limited by cross section minimizing district 26 and body 3 and annular chamber 11 on the other hand.
Alternately be communicated with low pressure return line 15 with high-pressure feed road 12 by control chamber 21, thus make to depend on the surface area selected for the cross section of four actuator chambers 16,17,19,21, adjoining land providing on a direction and other direction of making a concerted effort on distributor is provided, thus realizes the reciprocating motion of distributor 6.
In the following description, be that, when control chamber 21 is communicated with low pressure return line 15, distributor 6 moves downward by example acceptable, when control chamber 21 is communicated with high-pressure feed road 12, distributor 6 moves upward.
As shown in Figure 1, wherein, distributor 6 and piston 1 are positioned at bottom position to original state.When pressure fluid flows in high-pressure feed road 12, be applied to and the latter remain on bottom position by distributor 6 with joint efforts, control chamber 21 via passage 24, cannelure 23, piston 1 groove 25 and be connected to consistently equipment low pressure return line 15 passage 27 and be connected to low pressure return line.Be applied to and cause making a concerted effort on impact piston 1 piston 1 to rise, this is because actuator chamber 13 is connected to low pressure return line 15 via the cannelure 28 of distributor 6 and passage 14.
In impact piston ascending motion process, there is following operation:
At the end of impact piston 1 ascending motion, as shown in Figure 2, the cannelure 23 of the ridge 29 of piston 1 not Coverage Control device, thus set up being communicated with from high-pressure feed road 12 to control channel 24 and control chamber 21.
Then, the control chamber 21 of distributor 6 is in high pressure conditions, thus is applied to and causes distributor to rise making a concerted effort on distributor.
Be contained in the oil in chamber 17 to be discharged by calibration hole 18 in this ascending motion process of distributor 6.
The ridge 30 of distributor 6 does not cover the ridge 31 of distributor box 7, and sets up connection via passage 20 and center cavity 19 on high-pressure feed road 12, between passage 14 and actuator chamber 13.
Because distributor 6 stops its upward stroke, be applied to and make piston 1 its impact stroke of acceleration downwards making a concerted effort on piston 1, as shown in Figure 3.
In the impact stroke process of piston 1, control chamber 21, control channel 24 and cannelure 23 and high_voltage isolation, the groove 25 then via impact piston 1 is communicated with low pressure return line 15.Then, be applied to making a concerted effort downwards on distributor, distributor starts its downward motion, as shown in Figure 4.Move downward in process at this of distributor, chamber 17 is oil-filled by calibration hole 18.The selection of the size of this or these calibration hole can regulate and distribute the speed of device 6, thus makes the ridge 30 of distributor 6 overlapping with the ridge 31 of distributor box 7 after impact piston 1 arrives its impact zone.Due in accelerating travel process, in the whole motion of piston 1, the actuator chamber 13 of impact piston is supplied, thus can avoid cavitation.
Distributor 6 sets up connection between low pressure return line 15 and actuator chamber 13.Then, impact piston 1 and distributor 6 are in bottom position, and as shown in Figure 1, the work period can restart.
Fig. 5 represents the embodiment of the change of this hydraulic test, and wherein calibration hole 18 is not arranged on distributor box 7, but is set directly on distributor 6, thus makes calibration hole 18 axially be communicated to center cavity 19.
Self-evident, the present invention is not only limited to the embodiment of above-mentioned hydraulic test as an example, and on the contrary, it covers the embodiment of all distortion.
Claims (14)
1. a hydraulic impact equipment, it comprises body (3), this body comprises cylinder (2), impact piston (1) is installed in this cylinder slidably, this impact piston passes through incompressible fluid in complex way by hydraulic-driven, the distributor (6) be contained in distributor box (7) that moves through of this impact piston (1) controls, this distributor box is installed in the body of this equipment, it is characterized in that: described distributor box (7) and distributor (6) limit the closed cavity (17) being connected to high-pressure feed road (12) via at least one calibration hole (18) consistently at least in part.
2. a kind of hydraulic impact equipment according to claim 1, it is characterized in that: it comprises the distribution lid (8) leaned against on described distributor box (7) one end, be further characterized in that described closed cavity (17) is limited by this distributor box (7), distributor (6) and distribution lid (8).
3. a kind of hydraulic impact equipment according to claim 2, it is characterized in that: described distributor (6) has tube (6a), this tube (6a) is closed towards the end distributing lid (8) by diapire (6b), and this diapire (6b) and distributor box (7) and distributing covers together with (8) and limit this closed cavity (17).
4. a kind of hydraulic impact equipment according to claim 3, it is characterized in that: tube (6a) and the diapire (6b) of described distributor (6) limit center cavity (19), and this center cavity (19) is communicated to described high-pressure feed road (12) consistently.
5. a kind of hydraulic impact equipment according to claim 4, it is characterized in that: the diapire (6b) of described distributor (6) has at least one calibration hole (18), described calibration hole is communicated to described closed cavity (17) on the one hand, is communicated to described center cavity (19) on the other hand.
6. a kind of hydraulic impact equipment according to any one of claim 2-5, it is characterized in that: described distribution lid (8) has access portal (9), and be: described distributor (6) has extension (6c), described extension arranges and is used for extending through this access portal and gives prominence to from access portal, and described distribution lid (8) and extension (6c) limit from the part that this access portal is outstanding the chamber (16) being communicated to low pressure return line (15) consistently at least partly.
7. a kind of hydraulic impact equipment according to any one of claim 1-5, it is characterized in that: described closed cavity (17) is connected to high-pressure feed road (12) consistently via described at least one calibration hole (18), described calibration hole is arranged in the wall limiting this closed cavity (17).
8. a kind of hydraulic impact equipment according to any one of claim 1-5, it is characterized in that: it comprises the passage (C2) that described closed cavity (17) is communicated to high-pressure feed road (12) by consistently, and is wherein provided with at least one calibration hole (18).
9. a kind of hydraulic impact equipment according to claim 8, it is characterized in that: described distributor box (7) has at least one calibration hole (18), described calibration hole (18) is communicated in described closed cavity (17) on the one hand, is communicated to the passage (C2) being connected to high-pressure feed road (12) on the other hand.
10. a kind of hydraulic impact equipment according to any one of claim 1-5 and 9, it is characterized in that: described distributor box (7) and distributor (6) are defined for the control chamber (21) of the motion controlling described distributor (6), and this control chamber (21) is connected in alternating fashion to high-pressure feed road and low pressure return line.
11. a kind of hydraulic impact equipments according to any one of claim 1-5 and 9, it is characterized in that: described piston (1) and cylinder (2) limit at least one top chamber (13), under the effect of described distributor (6), this top chamber (13) is connected in alternating fashion to high-pressure feed road (12) and low pressure return line (15), and bottom chamber (11) is connected to high-pressure feed road (12) consistently.
12. a kind of hydraulic impact equipments according to claim 11, it is characterized in that: described body (3) and piston (1) limit rear chamber (10), this rear chamber (10) is relative with described bottom chamber (11) and be full of gas-pressurized.
13. a kind of hydraulic impact equipments according to claim 5, is characterized in that: the described calibration hole (18) being communicated with described center cavity and described closed cavity is axial.
14. a kind of hydraulic impact equipments according to claim 6, is characterized in that: described extension (6c) is axial.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910148032.5A CN101927478B (en) | 2009-06-23 | 2009-06-23 | Hydraulic impact equipment |
| KR1020100059720A KR20100138830A (en) | 2009-06-23 | 2010-06-23 | Hydraulic percussive device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910148032.5A CN101927478B (en) | 2009-06-23 | 2009-06-23 | Hydraulic impact equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101927478A CN101927478A (en) | 2010-12-29 |
| CN101927478B true CN101927478B (en) | 2015-03-04 |
Family
ID=43367044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910148032.5A Expired - Fee Related CN101927478B (en) | 2009-06-23 | 2009-06-23 | Hydraulic impact equipment |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR20100138830A (en) |
| CN (1) | CN101927478B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101492238B1 (en) * | 2013-09-10 | 2015-02-16 | 동양중공업(주) | Control valve for hidraulic breaker |
| ES2703124T3 (en) * | 2013-12-18 | 2019-03-07 | Nippon Pneumatic Mfg | Impact driven tool |
| FR3077752B1 (en) * | 2018-02-14 | 2020-01-31 | Montabert | ROTO-PERCUTANT HYDRAULIC PERFORATOR PROVIDED WITH A CONTROL CHAMBER PERMANENTLY CONNECTED TO A LOW PRESSURE ACCUMULATOR |
| CN109797745B (en) * | 2019-01-11 | 2020-09-04 | 中信重工机械股份有限公司 | Spacing protection device of hydraulic pile hammer |
| CN110067277B (en) * | 2019-05-27 | 2024-01-23 | 马鞍山卡迈特液压机械股份有限公司 | Middle cylinder part of hydraulic breaking hammer |
| CN112726707B (en) * | 2020-12-30 | 2022-04-26 | 江苏力博士机械股份有限公司 | Hydraulic breaking hammer piston ring improvement process |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4784228A (en) * | 1986-09-09 | 1988-11-15 | Teisaku Co., Ltd. | Impact device |
| DE4424078C2 (en) * | 1994-07-08 | 1996-10-10 | Klemm Bohrtech | Hydraulic hammer |
| US5669281A (en) * | 1994-12-08 | 1997-09-23 | Etablissements Montabert | Method and machine for altering the striking stroke of a percussive machine moved by a pressurized incompressible fluid |
| CN1441716A (en) * | 2000-07-13 | 2003-09-10 | 蒙塔博特股份有限公司 | Hydraulic percussion apparatus |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE513325C2 (en) * | 1998-04-21 | 2000-08-28 | Atlas Copco Rock Drills Ab | percussion |
-
2009
- 2009-06-23 CN CN200910148032.5A patent/CN101927478B/en not_active Expired - Fee Related
-
2010
- 2010-06-23 KR KR1020100059720A patent/KR20100138830A/en not_active Application Discontinuation
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4784228A (en) * | 1986-09-09 | 1988-11-15 | Teisaku Co., Ltd. | Impact device |
| DE4424078C2 (en) * | 1994-07-08 | 1996-10-10 | Klemm Bohrtech | Hydraulic hammer |
| US5669281A (en) * | 1994-12-08 | 1997-09-23 | Etablissements Montabert | Method and machine for altering the striking stroke of a percussive machine moved by a pressurized incompressible fluid |
| CN1441716A (en) * | 2000-07-13 | 2003-09-10 | 蒙塔博特股份有限公司 | Hydraulic percussion apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20100138830A (en) | 2010-12-31 |
| CN101927478A (en) | 2010-12-29 |
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Granted publication date: 20150304 Termination date: 20210623 |
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| CF01 | Termination of patent right due to non-payment of annual fee |