CN2792723Y - Hydraulic hammer - Google Patents
Hydraulic hammer Download PDFInfo
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- CN2792723Y CN2792723Y CN 200520016150 CN200520016150U CN2792723Y CN 2792723 Y CN2792723 Y CN 2792723Y CN 200520016150 CN200520016150 CN 200520016150 CN 200520016150 U CN200520016150 U CN 200520016150U CN 2792723 Y CN2792723 Y CN 2792723Y
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- cylinder body
- valve
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- piston rod
- control valve
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Abstract
A hydraulic hammer belongs to the technical field of an impact type hydraulic tool. The hydraulic hammer comprises a hammer head, a cylinder body, a control valve, a piston rod, a hydraulic accumulator, a drilling base and a drill rod, wherein the cylinder body and the drilling base are coaxially installed, and the drill rod is arranged in the drilling base. The hammer head which is arranged at the end part of the cylinder body forms a gas energy storing cavity with the cylinder body. A gas charging valve is arranged on the hammer head. The control valve which is arranged outside cylinder body is composed of a valve core, a valve body, an upper cover of the valve and a lower cover of the valve, wherein the valve core is arranged in an inner cavity of the valve body. The valve core is matched with the valve body to form an oil path which is communicated with an oil path which is formed by that the piston rod is matched with the cylinder body. The hydraulic accumulator is arranged outside the cylinder body. The gas charging valve is arranged on the hydraulic accumulator, and the bottom part of the hydraulic accumulator is provided with a plurality of small flow discharging holes. The small flow discharging holes are communicated with an oil inlet on the cylinder body and the control valve through the oil path. The hydraulic hammer, the control valve and the hydraulic accumulator which are designed in the utility model are respectively independent and separate structures. The utility model has the advantages of simple structure, easy manufacture, easy specialized manufacture and high working reliability.
Description
Technical field
The utility model relates to a kind of hydraulic hammer, belongs to impact type hydraulic tool technical field.
Background technology
Present its complex structure of known hydraulic hammer, be difficult to processing, the O﹠M inconvenience, the control valve of hydraulic hammer is cover skeleton symbol valve and is arranged at cylinder interior, make the volume of cylinder body increase, the cylinder body internal oil channel is more, and inclined hole is difficult to processing, and the disadvantage of cover skeleton symbol valve is that the warp-wise size is big, the wall book is yielding etc., make the cost height of hydraulic hammer, inefficiency, poor reliability.
Summary of the invention
The purpose of this utility model is to propose a kind of hydraulic hammer, changes the structure of existing hydraulic hammer, makes the simple in structure of hydraulic hammer, is easy to processing, cost is low, and reliable operation, and O﹠M is convenient.
The hydraulic hammer of the utility model design comprises tup, cylinder body, control valve, piston rod, hydraulic accumulator, pricker seat and drill steel.Cylinder body and the coaxial installation of pricker seat, cylinder body is provided with fuel feed hole and spill port, and the inner chamber of cylinder block middle part has annular oil groove.Piston rod places in the cylinder body, and piston rod is the cylindrical structure of four different-diameters of biconvex shoulder, and piston rod cooperates the formation oil circuit with the annular oil groove at inner chamber of cylinder block middle part.Drill steel places in the pricker seat.Tup places the end of cylinder body, and forms gas accumulation of energy chamber with cylinder body, and tup is provided with charge valve; Described control valve places the cylinder body outside, control valve is made up of spool, valve body and valve upper and lower cover, and spool places body cavity, and spool is four convex shoulder cylinder solid constructions, spool cooperates the formation oil circuit with valve body, this oil circuit cooperates the oil circuit that forms to be connected with piston rod and cylinder body.Hydraulic accumulator places the cylinder body outside, which is provided with charge valve, and the bottom is provided with a plurality of apertures that go out to flow, and goes out to flow aperture and is connected with fuel feed hole and control valve on the cylinder body by oil circuit.
The spool of the control valve in the above-mentioned hydraulic hammer is four convex shoulder cylinder solid constructions, the big convex shoulder equal diameters of its adjacent three, the two ends convex shoulder is a difference structure, the two ends convex shoulder respectively and the recessed core part between middle two convex shoulders be the circular arc even transition, and form negative power window with the body cavity oil groove, respectively have a blind chamber at convex shoulder center, two ends, blind chamber diameter and tapering are complementary with last bottom flange respectively.
The diameter that goes out to flow aperture and the length ratio of the hydraulic accumulator bottom in the above-mentioned hydraulic hammer are 0.5-1.0.
Gas accumulation of energy chamber in the above-mentioned hydraulic hammer and the slipper seal between the piston rod are the unidirectional elasticity combination sealing of U type.
The hydraulic hammer of the utility model design has the following advantages:
1, the cylinder body of hydraulic hammer, control valve and hydraulic accumulator are separate type independently separately, and they are independent parts, are formed by connecting by bolt, and are therefore simple in structure, are easy to processing and produce with specialized, have improved functional reliability simultaneously.
2, spool is real core cylindrical structure in the hydraulic hammer, and it is compared with the telescopic spool that present lot of domestic and foreign producer adopts has characteristics such as simple in structure, easy to process, and the warp-wise size is little, and volume is also little, is subjected to variations in temperature sensitiveness little, and is not yielding.
3, the valve port part that spool and valve body form in the hydraulic hammer because the effect of both transition arcs has formed negative power window, has been improved the influence of fluid power to spool widely, has improved the functional reliability of the job stability and the hydraulic hammer of spool.
4, according to user's needs, also can being arranged on the valve body of opposite side of hydraulic hammer into and out of hydraulic fluid port P and O.And change the triangle that is shaped as of its side plate, to be fit to the operation needs that difference is used for.
Description of drawings:
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the utility model user mode schematic diagram.
Fig. 3 is the utility model backhaul process oil circuit and operating principle schematic diagram.
Fig. 4 is the utility model stroke procedure oil circuit and operating principle schematic diagram.
Fig. 5 is the utility model control valve profile.
Among Fig. 1 and Fig. 2, the 1st, tup, the 2nd, gas accumulation of energy chamber, the 3rd, the charge valve on the tup, the 4th, last lining, the 5th, valve upper cover, the 6th, spool, the 7th, valve body, the 8th, valve lower cover, the 9th, hydraulic accumulator, the 10th, cylinder body, the 11st, piston rod, the 12nd, the charge valve on the hydraulic accumulator, the 13rd, pricker seat, the 14th, pricker pin, the 15th, drill steel, the 16th, rebound, the 17th, side plate.
The specific embodiment
The hydraulic hammer of the utility model design, its structure comprise tup 1, cylinder body 10, control valve, piston rod 15, hydraulic accumulator 9, pricker seat 13 and drill steel 15 as shown in Figure 1.Cylinder body 1 and the 13 coaxial installations of pricker seat, cylinder body 1 is provided with fuel feed hole and spill port, and the inner chamber of cylinder block middle part has annular oil groove.Piston rod 11 places in the cylinder body 10, and piston rod 11 is the cylindrical structure of four different-diameters of biconvex shoulder, and piston rod cooperates the formation oil circuit with the annular oil groove at inner chamber of cylinder block middle part.Drill steel places in the pricker seat.Tup places the end of cylinder body, and forms gas accumulation of energy chamber 2 with cylinder body, and tup 1 is provided with charge valve 3.Control valve places cylinder body 10 outsides, control valve is made up of spool 6, valve body 7 and valve upper and lower cover 5,8, and spool 6 places valve body 7 inner chambers, and spool 6 is four convex shoulder cylinder solid constructions, spool cooperates the formation oil circuit with valve body, this oil circuit cooperates the oil circuit that forms to be connected with piston rod and cylinder body.Hydraulic accumulator places the cylinder body outside, which is provided with charge valve, and the bottom is provided with a plurality of apertures that go out to flow, and goes out to flow aperture and is connected with fuel feed hole and control valve on the cylinder body by oil circuit.
The spool 6 of the control valve in the above-mentioned hydraulic hammer, its structure as shown in Figure 5, alphabetical Y is a hydraulic fluid chamber among the figure, P is an oil suction chamber, A is middle oil pocket, O is for going out oil pocket, P
1Be common pressure chamber.Spool is four convex shoulder cylinder solid constructions, the big convex shoulder equal diameters of its adjacent three, the two ends convex shoulder is a difference structure, the two ends convex shoulder respectively and the recessed core part between middle two convex shoulders be the circular arc even transition, and form negative power window with the body cavity oil groove, respectively have a blind chamber at convex shoulder center, two ends, blind chamber diameter and tapering are complementary with last bottom flange respectively.
The diameter that goes out to flow aperture and the length ratio of hydraulic accumulator 9 bottoms in the above-mentioned hydraulic hammer are 0.5-1.0.
Gas accumulation of energy chamber 2 in the above-mentioned hydraulic hammer and the slipper seal between the piston rod 11 are the unidirectional elasticity combination sealing of U type.
The hydraulic hammer of the utility model design, control valve is arranged on the cylinder body outside, promptly reduced the volume of cylinder body, help simultaneously the processing of cylinder body and control valve again, at this moment, this control valve can be used as independent parts, be easy to processing and specialized production, the design feature of control valve spool plays cushioning effect to the spool of high-speed motion, and has reduced the bump to valve gap greatly.Spool two ends convex shoulder is a difference structure, the two ends convex shoulder respectively and the recessed core between middle two convex shoulders be divided into the arc even transition and form negative power window with three oil grooves in the body cavity, like this, improved of the influence of fluid power widely, also improved the functional reliability of whole hydraulic hammer simultaneously the spool job stability.
What the oil sealing at the utility model piston rod and cylinder body two ends adopted is the very little standard hydraulic pressure combination sealing of frictional force, and control valve and hydraulic accumulator and cylinder body are separate type, and be therefore simple in structure, is easy to processing, good reliability, and O﹠M is convenient.
When hydraulic hammer assembling and use, earlier spool 6 is packed into the inner chamber of valve body 7, tighten valve upper and lower cover 4 and 8, the cylinder body 10 of then corresponding standard hydraulic pressure combination sealing being packed into reaches goes up lining 4, with piston rod 11 cylinder body 10 inner chambers of packing into, pack into and go up lining 4, the inside and outside guide pin bushing of drill steel and drill steel 15 pricker seat 13 inner chambers of packing into, and fixed with pricker pin 14 pins, with bolt tup 1, valve body 7, hydraulic accumulator 9, pricker seat 13 are coupled together with cylinder body 10 at last and form the hydraulic hammer main body.As shown in Figure 2, with hydraulic hammer main body and side plate 17 and rebound 16 usefulness bolts couple together just can with the supporting use of main frame, before the use, earlier the 2-φ hole among Fig. 2 is connected with the bearing pin on the original host with the corresponding pin-and-hole of main frame, again with coupling together in the hydraulic oil pipe of main frame and the hydraulic hammer into and out of hydraulic fluid port P, O, charge into the nitrogen of certain pressure by charge valve to tup 1 and hydraulic accumulator 9 then, hydraulic hammer just can have been worked.As required, also can being arranged on the valve body 7 of hydraulic hammer into and out of hydraulic fluid port P and O, its side plate 17 adopts triangle side plates directly supporting with different main frames, to satisfy user's special requirement, in addition, also can make one man operation's hand-held hydraulic hammer.
As shown in Figure 3, during hydraulic hammer work, piston rod 11 is in lowest positions and presses to drill steel 15 under the effect of deadweight and upper end nitrogen pressure, and the pressure oil of host hydraulic system enters from the P mouth, shown in the A oil circuit of Fig. 3, the hydraulic hammer oil return is the O mouth, shown in the B oil circuit of Fig. 3, because piston 11 bar epicoeles communicate with oil return B oil circuit through valve port, so under the effect of cavity of resorption pressure oil, rise, the beginning backhaul.
As shown in Figure 4, piston rod 11 is in the process of backhaul, nitrogen in compression tup 1 and the hydraulic accumulator 9 and energy storage, piston rod 11 is before backhaul to terminal, and the Y cannelure at cylinder body 10 middle parts is switched on its big convex shoulder base, makes the Y groove communicate with A pressure oil, then pressure oil enters the big end of spool 6, spool 6 commutates under the effect of area difference, makes piston rod 11 epicoeles communicate with pressure oil, and piston rod 11 enters stroke state.
Stroke procedure be piston rod 11 under the effect of above and below product moment and head nitrogen pressure, by host hydraulic system and hydraulic accumulator 9 interflow, move downward fast, impact drill steel 15, and externally work done.In stroke procedure, the groove at piston rod 11 middle parts has been linked up the Y cannelure and the O mouth drainback passage at cylinder body middle part, as shown in Figure 3, and then make the big end of control valve spool 6 communicate with oil return O, this moment, spool 6 commutated under the pressure oil effect on the small end convex shoulder, made piston rod 11 epicoeles communicate with A-O, therefore, piston rod 11 enters again in the next backhaul process, and so forth motion.
When drill steel breaks up the back with object or fans the air, piston rod 11 and drill steel 15 move down, the groove at piston rod 11 middle parts and four uniform rectangular slots on the little convex shoulder have been linked up hydraulic hammer into and out of hydraulic fluid port at this moment, make the hydraulic hammer off-load, automatically stop hammer, save the energy, reduced heating, reduced temperature rise.
Claims (4)
1, a kind of hydraulic hammer is characterized in that comprising tup, cylinder body, control valve, piston rod, hydraulic accumulator, pricker seat and drill steel; Described cylinder body and the coaxial installation of pricker seat, cylinder body is provided with fuel feed hole and spill port, and the inner chamber of cylinder block middle part has annular oil groove; Described piston rod places in the cylinder body, and piston rod is the cylindrical structure of four different-diameters of biconvex shoulder, and piston rod cooperates the formation oil circuit with the annular oil groove at inner chamber of cylinder block middle part; Described drill steel places in the pricker seat; Described tup places the end of cylinder body, and forms gas accumulation of energy chamber with cylinder body, and tup is provided with charge valve; Described control valve places the cylinder body outside, control valve is made up of spool, valve body and valve upper and lower cover, and spool places body cavity, and spool is four convex shoulder cylinder solid constructions, spool cooperates the formation oil circuit with valve body, this oil circuit cooperates the oil circuit that forms to be connected with piston rod and cylinder body; Described hydraulic accumulator places the cylinder body outside, which is provided with charge valve, and the bottom is provided with a plurality of apertures that go out to flow, and goes out to flow aperture and is connected with fuel feed hole and control valve on the cylinder body by oil circuit.
2, hydraulic hammer as claimed in claim 1, the spool that it is characterized in that wherein said control valve is four convex shoulder cylinder solid constructions, the big convex shoulder equal diameters of its adjacent three, the two ends convex shoulder is a difference structure, the two ends convex shoulder respectively and the recessed core part between middle two convex shoulders be the circular arc even transition, and form negative power window with the body cavity oil groove, and respectively having a blind chamber at convex shoulder center, two ends, blind chamber diameter and tapering are complementary with last bottom flange respectively.
3, hydraulic hammer as claimed in claim 1 is characterized in that the diameter that to flow aperture and the length ratio of described hydraulic accumulator bottom is 0.5-1.0.
4, hydraulic hammer according to claim 1 is characterized in that, the slipper seal between described gas accumulation of energy chamber and the piston rod is the unidirectional elasticity combination sealing of U type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520016150 CN2792723Y (en) | 2005-04-15 | 2005-04-15 | Hydraulic hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520016150 CN2792723Y (en) | 2005-04-15 | 2005-04-15 | Hydraulic hammer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2792723Y true CN2792723Y (en) | 2006-07-05 |
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ID=36819875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520016150 Expired - Fee Related CN2792723Y (en) | 2005-04-15 | 2005-04-15 | Hydraulic hammer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2792723Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103223660A (en) * | 2013-05-15 | 2013-07-31 | 长沙矿山研究院有限责任公司 | Pin-bush hydraulic impactor |
| CN105050773A (en) * | 2013-03-15 | 2015-11-11 | 卡特彼勒公司 | Hydraulic hammer having impact system subassembly |
| CN106194000A (en) * | 2016-08-28 | 2016-12-07 | 神翼航空器科技（天津）有限公司 | Quartering hammer pore-forming drill steel |
| CN108869433A (en) * | 2018-07-03 | 2018-11-23 | 赵德朝 | A kind of reversal valve increasing hydraulic breaking hammer hitting power |
| CN112317019A (en) * | 2020-11-20 | 2021-02-05 | 中矿金业股份有限公司 | Hammer crusher and using method thereof |
| CN116950173A (en) * | 2023-09-20 | 2023-10-27 | 徐州巴特工程机械股份有限公司 | Excavator breaking hammer structure for road construction |
-
2005
- 2005-04-15 CN CN 200520016150 patent/CN2792723Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105050773A (en) * | 2013-03-15 | 2015-11-11 | 卡特彼勒公司 | Hydraulic hammer having impact system subassembly |
| CN103223660A (en) * | 2013-05-15 | 2013-07-31 | 长沙矿山研究院有限责任公司 | Pin-bush hydraulic impactor |
| CN103223660B (en) * | 2013-05-15 | 2015-02-25 | 长沙矿山研究院有限责任公司 | Pin-bush hydraulic impactor |
| CN106194000A (en) * | 2016-08-28 | 2016-12-07 | 神翼航空器科技（天津）有限公司 | Quartering hammer pore-forming drill steel |
| CN108869433A (en) * | 2018-07-03 | 2018-11-23 | 赵德朝 | A kind of reversal valve increasing hydraulic breaking hammer hitting power |
| CN108869433B (en) * | 2018-07-03 | 2020-04-21 | 赵德朝 | Reversing valve for increasing hitting force of hydraulic breaking hammer |
| CN112317019A (en) * | 2020-11-20 | 2021-02-05 | 中矿金业股份有限公司 | Hammer crusher and using method thereof |
| CN116950173A (en) * | 2023-09-20 | 2023-10-27 | 徐州巴特工程机械股份有限公司 | Excavator breaking hammer structure for road construction |
| CN116950173B (en) * | 2023-09-20 | 2023-12-29 | 徐州巴特工程机械股份有限公司 | Excavator breaking hammer structure for road construction |
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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: 20060705 Termination date: 20100415 |