CN201015863Y - Hydraulic hammer - Google Patents
Hydraulic hammer Download PDFInfo
- Publication number
- CN201015863Y CN201015863Y CNU2006201279751U CN200620127975U CN201015863Y CN 201015863 Y CN201015863 Y CN 201015863Y CN U2006201279751 U CNU2006201279751 U CN U2006201279751U CN 200620127975 U CN200620127975 U CN 200620127975U CN 201015863 Y CN201015863 Y CN 201015863Y
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- shuttle valve
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Abstract
The utility model relates to a hydraulic hammer in the technology field of impulse type hydraulic tool, consisting of an upper body, a middle cylinder body, a lower cylinder body, a brunt plunger piston, a drill shank, an upper guide sleeve, a lower guide sleeve, a control vale component, a shuttle valve component, a high-low energy accumulator, a gas filling valve component, double end studs and a screw nut. The upper body, the middle cylinder body, and the lower cylinder body are assembled according to standard torque by four double end studs, a gasket and a screw nut. The impact plunger piston and the stem are coaxially and respectively installed inside the upper body, the middle cylinder body, and the lower cylinder body. The control valve component and the shuttle valve component are respectively installed in the middle cylinder body. A low pressure nitrogen air chamber is formed by the gas filling valve component of the upper body at the impact plunger piston. A high energy accumulator is formed by installing a high energy accumulator cover, a diaphragm and a gas filling valve component on the middle cylinder body. The hydraulic hammer, the control valve and the shuttle valve designed in the utility model are all placed in the middle cylinder body. Having a compact structure and an easier controlling of the position precision, the utility model is suitable to process at the processing center utilizing the centralized working-procedure principle. The reliability of the processing work is as well improved.
Description
Technical field
The utility model belongs to impact type hydraulic tools field, relates in particular to a kind of hydraulic hammer.
Background technology
Present known hydraulic hammer, its structure are split type, are promptly coupled together by bolt fully between control valve, accumulator and the main body, are subjected to the influence of the accuracy of manufacture and material, under the effect of power, usually deform during operation, thereby form leakage and card valve phenomenon.Directly affect the service life and the serviceability of hydraulic hammer, reliably poor than property.
Summary of the invention
The purpose of this utility model is the hydraulic hammer that proposes after a kind of the improvement, is that control valve assembly, shuttle valve assembly are all concentrated in the middle cylinder body of hydraulic hammer, again by the reasonable Arrangement oil duct, makes the shortest, the more compact structure of hydraulic circuit.
The utility model comprises upper body, middle cylinder body, lower cylinder body, ram piston, drill steel, goes up fairlead, following fairlead, control valve assembly, shuttle valve assembly, height Pressure energy accumulator, charge valve assembly and stud, nut;
Described upper body, middle cylinder body and lower cylinder body with stud and nut in accordance with regulations coaxial, the order of moment of torsion be installed together;
The upper body is positioned at the top of hydraulic hammer, one hole is arranged on the last body wall, the charge valve assembly is installed in the hole, the plunger of going out in last intracoelomic cavity, charge valve assembly and the middle cylinder body forms the low pressure nitrogen air chamber jointly, be filled with nitrogen in the nitrogen chamber, as low-pressure accumulator of the present utility model; The sealing of nitrogen is realized jointly by above-mentioned three parts in the upper body;
Described charge valve assembly, be made up of inflation valve casing, plug screw, gland, cover, steel ball, spring and sealing ring, the inflation valve casing is a hollow tubular, has convex shoulder, between convex shoulder and the upper body sealing ring is arranged, collar extension is by the plug screw shutoff, and inflation valve casing endoporus is staged, in spring, steel ball, cover and gland are arranged, steel ball is under the effect of spring, be pressed on the sealing ring that puts, finish the sealing first time to nitrogen in the upper body, plug screw and sealing ring are then finished the sealing second time to nitrogen in the upper body;
Middle cylinder body is provided with oil-in and oil-out outside middle cylinder body between upper body and lower cylinder body, be used for installing rubber hose coupling; Also be provided with high pressure accumulator mouth on the middle cylinder body, barrier film, high pressure accumulator lid are housed in the described high pressure accumulator mouth, high pressure accumulator covers the charge valve assembly is installed, and is the high pressure accumulator after charging into nitrogen; On the middle cylinder body three holes are arranged, first hole is the impact pole consent, this hole is coaxial with last intracoelomic cavity, have cannelure in the hole, ram piston is placed in one, described ram piston is the cylindrical structure of biconvex shoulder two ends different-diameters (two convex shoulder diameters are identical), and this structure forms differential supercharging principle that upper end diameter is little, lower end diameter is big, and ram piston cooperates the formation oil circuit with annular oil groove in the middle cylinder body; Second hole is the control valve component holes, the control valve assembly places in the hole, have cannelure in this hole, described control valve grip assembly is made up of control valve pocket, application valve cover and three parts of control spool, control valve pocket inside and outside circle all has cannelure and hole, and the control spool is the sleeve of single convex shoulder, and there are six uniform grooves at two ends, place in control valve pocket and the application valve cover, cooperate with control valve pocket and application valve cover to form oil circuit; The 3rd hole is the shuttle valve hole, places the shuttle valve assembly in the hole, and the shuttle valve assembly is made up of shuttle valve, shuttle valve lid, shuttle valve steel ball and disk spring, and the shuttle valve steel ball places in the shuttle valve, loads onto the shuttle valve lid, forms conical surface seal between the shuttle valve steel ball and the shuttle valve conical surface;
Described lower cylinder body endoporus is a stepped hole, has cannelure in the hole, and upper and lower fairlead places lower cylinder body, and locks with straight pin; Drill steel is positioned at up and down within the fairlead, the axial location that last fairlead control drill steel rises, and the striking point of ram piston just, also designing in the lower cylinder body has lock pin, is used to control the descending maximum position of drill steel.
Sealing of the present utility model, what the nitrogen chamber in ram piston and upper body sealed employing is the star sealing ring, the slip ring that the oil circuit sealing of ram piston and upper body and middle cylinder body is adopted and the combination of star sealing ring.This combination sealing has low frictional resistance, no sticking phenomenon, and greasy property is good, groove structure tube list, advantage such as high pressure resistant, high temperature; The star sealing ring has the advantage of two way seal again.
Beneficial effect
The hydraulic hammer of the new shape design of this practicality has the following advantages:
1, during the control valve assembly of hydraulic hammer, shuttle valve assembly, high pressure accumulator concentrate in the cylinder block body, reduced and split typely connected and the screw that produces is loosening and distortion causes the body deformation and the phenomenon of leakage with screw; And middle cylinder body integrates various holes, is fit to the principle that adopts operation to concentrate, selects modern numerical control machining center, and disposable clamping is finished the processing to body, has promptly improved the machining accuracy of product, has improved operating efficiency again.Body in integrally-built has been fixed the position relation between each valve, has improved the functional reliability of product.
2, the control spool in the hydraulic hammer is the hollow sleeve part of single convex shoulder, owing to adopted form of sleeve, reduced the weight of part, the motion frequency of control spool in hydraulic hammer is identical with the ram piston frequency, reduce his weight, just reduced his impulsive force, thereby improved the resistance to deformation of control valve pocket, lid and control spool, improved their service life control valve pocket and lid.
What 3, the charge valve assembly adopted is that steel ball is under the pressure effect of spring, be pressed on and seal on the sealing ring that puts, in the time of inflated with nitrogen, the inflation needle promotes steel ball compression spring and moves, and carries out inflated with nitrogen, after inflation is finished, the steel ball return is finished sealing, load onto plug screw, the sealing ring on the plug screw seals for the second time with the inflation valve body, and the sealing of accumulator has been guaranteed in twice sealing.
4, the shuttle valve assembly adopts, and to be steel ball move in the cavity that shuttle valve and lid assembling back form, with conical surface contact on the shuttle valve, separate closure, the unlatching of formed oil circuit.
Description of drawings
Fig. 1 is a structural front view of the present utility model;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is a shape assumption diagram of the present utility model;
Fig. 4 is the left view of Fig. 3;
Fig. 5 is a control valve group schematic diagram of the present utility model;
Fig. 6 moves the back schematic diagram on the control spool;
Fig. 7 is a charge valve group schematic diagram of the present utility model.
Fig. 8 is a shuttle valve group schematic diagram of the present utility model.
The specific embodiment
As shown in the figure: the upper body 2 of hydraulic hammer, middle cylinder body 17, four studs 1 of lower cylinder body 10 usefulness, nut 21 and packing ring 20 moment of torsion der group in accordance with regulations are fitted together; On 2 walls of upper body charge valve assembly 3 is installed, upper body 2 internal cavities are filled with nitrogen, as the low-pressure accumulator; Middle cylinder body 17 outer oil-in and the oil-outs 4 of being provided with, rubber hose coupling can be installed, also be provided with high pressure accumulator mouth, barrier film 7, high pressure accumulator lid 6 are installed in high pressure accumulator mouth, load onto high-voltage energy-storage charge valve assembly 8, charge into again behind the nitrogen as the high pressure accumulator; On the middle cylinder body 17 three holes are arranged, first macropore dress ram piston 9 has annular oil groove in the hole, ram piston 9 is the biconvex shoulder, the cylindrical structure of two ends different-diameter (two convex shoulder diameters are identical), ram piston 9 cooperates the formation oil circuit with annular oil groove in the middle cylinder body 17; Second hole cartridge control valve assembly 5 also has cannelure in the hole, control valve assembly 5 places in the hole, and middle cylinder body 17 cooperates the formation oil circuit with control valve assembly 5; The 3rd hole dress shuttle valve assembly 19, shuttle valve assembly 19 cylindricals hole therewith cooperate the formation oil circuit.In the middle of the lower cylinder body 10 stepped hole is arranged, also have cannelure in the hole, last fairlead 12, following fairlead 13 place lower cylinder body 10, and lock with straight pin 14,16.Drill steel 11 places within the upper and lower fairlead 12,13, the axial location that last fairlead 12 control drill steels 11 rise, the striking point of ram piston 9 just, the descending maximum position of lock pin 15 control drill steels 11.
Contour structures of the present utility model is a del, connecting plate 38 and left side plate 40 weld together, and be fastened on the hydraulic hammer main body 39 adjusting screw(rod) 42 and locking nut 43 can adjust and the be locked relative position in 12 holes on the connecting plate 38 with screw rod 18 and nut 41.
Described control valve assembly is made up of control valve pocket 24, application valve cover 22 and 23 3 parts of control spool, the inside and outside circle of control valve pocket 24 all has cannelure and hole, control spool 23 is the sleeve of single convex shoulder, there are six uniform grooves at two ends, control spool 23 places in control valve pocket 24 and the application valve cover 22, and cooperates the formation oil circuit with control valve pocket 24 and application valve cover 22.
Described charge valve assembly is made up of inflation valve casing 27, plug screw 25, gland 29, cover 31, steel ball 33, spring 34 and sealing ring 32,30,28 etc., steel ball 33 is under the effect of spring 34, be pressed on the sealing ring 32 of cover 31, finish the sealing first time to nitrogen in above-mentioned low, the high pressure accumulation of energy body, secondary sealing function is then played in the combination of plug screw 25 and sealing ring 26.
Described shuttle valve assembly is made up of shuttle valve 37, shuttle valve lid 35, shuttle valve steel ball 36, and shuttle valve steel ball 36 places in the shuttle valve 37, loads onto shuttle valve lid 35, and shuttle valve steel ball 36 forms sealing with the conical surface of shuttle valve 37.
During work, 12 circular holes by on the connecting plate 38 couple together the utility model and main frame with screw bolt and nut, connect oil pipe at oil inlet and outlet 4 again, and main frame is depressed drill steel 11, send into high-pressure and hydraulic oil after, hydraulic hammer just can be worked.
During hydraulic hammer work, at first depress drill steel 11, send into high-pressure oil, ram piston 9 is under the promotion of high-pressure oil, and the nitrogen in 2 inner chambers of compression upper body moves up; Control the oil duct place when ram piston 9 moves to, high-pressure oil enters shuttle valve assembly 19 by oil duct, and in the shuttle valve assembly, high-pressure oil covers 35 holes from shuttle valve and enters, and the conical surface that promotes shuttle valve steel ball 36 and shuttle valve 37 forms sealing; High-pressure oil passes through oil duct, enter in the control valve assembly, under the effect of pressure oil, control spool 23 moves to the upper end near application valve cover 22, because pressure oil P and B mouth communicate (the P mouth is a high-pressure oil, and the O mouth is a low pressure oil), the B mouth communicates with the boss upper end of ram piston 9, lower convex platform communicates on the ram piston 9, and this moment, under the acting in conjunction greater than the pressure differential of following section, ram piston 9 moved down fast at upper body 2 low-pressure nitrogens and ram piston 9 convex platform sections; When moving to control oil duct place, the control oil duct becomes low pressure oil by hydraulic oil, and signal passes to shuttle valve assembly 19, in the shuttle valve assembly, shuttle valve steel ball 36 does not have the effect of pressure oil, is in and freely adorns attitude, communicate with two low pressure oil loops, signal is delivered in the control valve assembly again.After this moment, the A mouth became low pressure oil, control spool 23 upper end areas are greater than the lower end area, under action of pressure, control spool 23 moves down, when moving to the lower end of control valve pocket 24, and P mouth and the sealing of B mouth, this moment, B mouth and O mouth communicated, be low pressure oil above ram piston 9 boss, the lower end is a hydraulic oil, carries out revolving the second time ring under the effect of hydraulic oil.Motion and so forth.
Claims (3)
1. hydraulic hammer, comprise upper body, middle cylinder body, lower cylinder body, ram piston, drill steel, go up fairlead, fairlead, control valve assembly, shuttle valve assembly, height Pressure energy accumulator, charge valve assembly, stud, nut down, it is characterized in that: upper body, middle cylinder body and lower cylinder body with four studs and nut in accordance with regulations the moment of torsion der group be fitted together;
The upper body is positioned at the top of hydraulic hammer, one hole is arranged on the last body wall, the charge valve assembly is installed in the hole, the plunger of going out in last intracoelomic cavity, charge valve assembly and the middle cylinder body forms the low pressure nitrogen air chamber jointly, be filled with nitrogen in the nitrogen chamber, as low-pressure accumulator of the present utility model;
Described charge valve assembly, form by inflation valve casing, plug screw, gland, cover, steel ball, spring and sealing ring, the inflation valve casing is a hollow tubular, have convex shoulder, between convex shoulder and the upper body sealing ring is arranged, collar extension is by the plug screw shutoff, inflation valve casing endoporus is staged, in spring, steel ball, cover and gland are arranged, steel ball is pressed on the sealing ring that puts under the effect of spring;
Middle cylinder body is between upper body and lower cylinder body, outside middle cylinder body, be provided with oil-in and oil-out, also be provided with high pressure accumulator mouth on the middle cylinder body, barrier film, high pressure accumulator lid are housed in the high pressure accumulator mouth, high pressure accumulator covers the charge valve assembly is installed, and is the high pressure accumulator after charging into nitrogen; On the middle cylinder body three holes are arranged, first hole is the impact pole consent, this hole is coaxial with last intracoelomic cavity, have cannelure in the hole, ram piston is placed in one, described ram piston is biconvex shoulder two ends different-diameters, and the identical cylindrical structure of two convex shoulder diameters, and ram piston cooperates the formation oil circuit with annular oil groove in the middle cylinder body; Second hole is the control valve component holes, the control valve assembly places in the hole, have cannelure in this hole, described control valve grip assembly is made up of control valve pocket, application valve cover and three parts of control spool, control valve pocket inside and outside circle all has cannelure and hole, and the control spool is the sleeve of single convex shoulder, and there are six uniform grooves at two ends, place in control valve pocket and the application valve cover, cooperate with control valve pocket and application valve cover to form oil circuit; The 3rd hole is the shuttle valve hole, places the shuttle valve assembly in the hole, and the shuttle valve assembly is made up of shuttle valve, shuttle valve lid, shuttle valve steel ball and disk spring, and the shuttle valve steel ball places in the shuttle valve, loads onto the shuttle valve lid, forms conical surface seal between the shuttle valve steel ball and the shuttle valve conical surface;
Described lower cylinder body endoporus is a stepped hole, has cannelure in the hole, and upper and lower fairlead places lower cylinder body, and locks with straight pin; Within the fairlead, also designing in the lower cylinder body had lock pin about drill steel was positioned at.
2. hydraulic hammer according to claim 1 is characterized in that: what the sealing of upper body and ram piston was adopted is the sealing of star circle and star circle and slip ring combination; What the sealing of middle cylinder body and ram piston was adopted is the sealing of slip ring and the combination of star circle.
3. hydraulic hammer according to claim 1 is characterized in that: ram piston is biconvex shoulder two ends different-diameters, and the identical cylindrical structure of two convex shoulder diameters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201279751U CN201015863Y (en) | 2006-10-24 | 2006-10-24 | Hydraulic hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201279751U CN201015863Y (en) | 2006-10-24 | 2006-10-24 | Hydraulic hammer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201015863Y true CN201015863Y (en) | 2008-02-06 |
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ID=39056340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201279751U Expired - Fee Related CN201015863Y (en) | 2006-10-24 | 2006-10-24 | Hydraulic hammer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201015863Y (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010133092A1 (en) * | 2009-05-21 | 2010-11-25 | 南阳开天工程机械有限公司 | Internal machining method for oil passage holes of hydraulic breaking hammer |
| CN102294674A (en) * | 2010-12-02 | 2011-12-28 | 莫雪松 | Method for quickly dismantling drill rod bush of drill rod base assembly of hydraulic breaking hammer |
| CN102734256A (en) * | 2011-04-13 | 2012-10-17 | 陈实 | Tandem type hydraulic cylinder of electro-hydraulic hammer |
| CN103089141A (en) * | 2011-11-04 | 2013-05-08 | 北京凌天世纪自动化技术有限公司 | Handheld pneumatic rock drill |
| CN103657771A (en) * | 2012-09-14 | 2014-03-26 | 袁明友 | Fully-automatic hydraulic ore crushing machine and using method thereof |
| CN103827397A (en) * | 2011-09-29 | 2014-05-28 | 卡特彼勒公司 | System and method for easy removal of hydraulic hammer bushing |
| CN105050773A (en) * | 2013-03-15 | 2015-11-11 | 卡特彼勒公司 | Hydraulic hammer having impact system subassembly |
| CN105604116A (en) * | 2016-03-07 | 2016-05-25 | 湖州中辰建设有限公司 | Hydraulic breaking hammer for loading machine |
| CN106737435A (en) * | 2016-12-20 | 2017-05-31 | 合肥市春华起重机械有限公司 | A kind of Pneumatic hydraulic bolt punching |
| CN106895033A (en) * | 2015-11-13 | 2017-06-27 | 卡特彼勒公司 | Accumulation device assembly |
-
2006
- 2006-10-24 CN CNU2006201279751U patent/CN201015863Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010133092A1 (en) * | 2009-05-21 | 2010-11-25 | 南阳开天工程机械有限公司 | Internal machining method for oil passage holes of hydraulic breaking hammer |
| CN102294674A (en) * | 2010-12-02 | 2011-12-28 | 莫雪松 | Method for quickly dismantling drill rod bush of drill rod base assembly of hydraulic breaking hammer |
| CN102734256A (en) * | 2011-04-13 | 2012-10-17 | 陈实 | Tandem type hydraulic cylinder of electro-hydraulic hammer |
| CN103827397A (en) * | 2011-09-29 | 2014-05-28 | 卡特彼勒公司 | System and method for easy removal of hydraulic hammer bushing |
| CN103089141A (en) * | 2011-11-04 | 2013-05-08 | 北京凌天世纪自动化技术有限公司 | Handheld pneumatic rock drill |
| CN103657771A (en) * | 2012-09-14 | 2014-03-26 | 袁明友 | Fully-automatic hydraulic ore crushing machine and using method thereof |
| CN103657771B (en) * | 2012-09-14 | 2016-08-03 | 袁明友 | A kind of fully automatic hydraulic Ore breaks little machine |
| CN105050773A (en) * | 2013-03-15 | 2015-11-11 | 卡特彼勒公司 | Hydraulic hammer having impact system subassembly |
| CN106895033A (en) * | 2015-11-13 | 2017-06-27 | 卡特彼勒公司 | Accumulation device assembly |
| CN105604116A (en) * | 2016-03-07 | 2016-05-25 | 湖州中辰建设有限公司 | Hydraulic breaking hammer for loading machine |
| CN106737435A (en) * | 2016-12-20 | 2017-05-31 | 合肥市春华起重机械有限公司 | A kind of Pneumatic hydraulic bolt punching |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080206 Termination date: 20111024 |