CN2223156Y - Electric hydraulic hammer unit head - Google Patents
Electric hydraulic hammer unit head Download PDFInfo
- Publication number
- CN2223156Y CN2223156Y CN 95239639 CN95239639U CN2223156Y CN 2223156 Y CN2223156 Y CN 2223156Y CN 95239639 CN95239639 CN 95239639 CN 95239639 U CN95239639 U CN 95239639U CN 2223156 Y CN2223156 Y CN 2223156Y
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- cylinder
- cavity
- working cylinder
- oil
- unit head
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Abstract
The utility model discloses an electric hydraulic hammer unit head. The design of the utility model is different from that of the prior art, a hammer rod is arranged in a working cylinder, and a composite cylinder is sheathed in the outside of the working cylinder. An outer cylinder body is sheathed in the outside of the composite cylinder, and an oil tank is arranged in the outside of the outer cylinder body. A cover is arranged on the outer cylinder body, and an outer cylinder body bottom cover is arranged below the outer cylinder body. Striking valves are installed in the upper cover and at the upper end of the working cylinder, and backhaul buffer valves are arranged in the bottom cover and at the lower end of the working cylinder. A ring air liquid energy accumulator is arranged between the outer wall of the composite cylinder and the inner wall of the outer cylinder body, and the lower end of the working cylinder is provided with a low-pressure oil collector. The utility model has the advantages of simple structure, compact structure and good performance.
Description
The utility model relates to the machining equipment that does not have cutting, and specifically the hammer in forging, the hammering equipment furtherly, is the drive unit that utilizes hydraulicdriven hammer.
Domestic existing electric liquid hammer unit head from type of drive, is liquid pneumatic hammer unit head, from operating principle, can be divided into two classes, and a class is to hit the unit head of mode work with oil-feed, and a class is to hit the unit head of mode work with oil extraction.
Hit the liquid pneumatic hammer unit head of mode work with oil-feed, be filled with a certain amount of gas in its working cylinder rod chamber, tup is realized backhaul under the Compressed Gas effect, when rodless cavity enters a large amount of hydraulic oils, rod chamber gas is compressed, and tup is realized quick descending motion under the effect of pressure oil and deadweight.This unit head is only under the strike state; the rodless cavity of working cylinder just injects hydraulic oil; rest working conditions all is in unloading condition; thereby the leakage of oil tendency is little; but because the molecular density of gas is lower; permeability is extremely strong; the speed of related movement of hammer stem kinematic pair and operating frequency are higher in addition; therefore the seal request of rod chamber gas is difficult to be guaranteed; often occur leaking, and cause normally backhaul of tup, influence operate as normal; the volume expansion Effect on Performance of in addition being bullied, such liquid pneumatic hammer unit head are difficult to adapt to the transformation of long steam-air power hammer of stroke.
Liquid pneumatic hammer unit head with the work of oil extraction strike mode is filled with a certain amount of gas in its working cylinder rodless cavity, and when hydraulic oil entered rod chamber, the gas in the rodless cavity was compressed, and tup is forced to; When rod chamber and oil return opening connection oil extraction, the expansion of compressed gas in the rodless cavity, tup is realized quick descending motion under the effect of gas expansion and deadweight.The liquid pneumatic hammer unit head of working in this way owing to returned signal must can send after strike finishes, thereby exists the vexed mould time long, and also there is the shortcoming of leaking easily simultaneously in shortcomings such as resilience double hit.
The purpose of this utility model provides a kind of simple in structure, compact, and nothing is leaked, do not had substantially pipe connection, not resilience double hit and backhaul bump, weak point of vexed mould time, is particularly useful for the electric liquid hammer unit head of the long steaming hollow hammer transformation of stroke.
Technical solution of the present utility model is: a kind of electric liquid hammer unit head, and adopted the design that is different from prior art: a working cylinder is arranged, hammer stem is housed in the working cylinder, working cylinder is with composite cylinder outward, and composite cylinder is with outer cylinder body outward, and outer cylinder body is equipped with fuel tank outward; Loam cake is arranged on the outer cylinder body, outer cylinder bottom head is arranged under the outer cylinder body; In loam cake, working cylinder upper end is equipped with the strike valve, the returning buffering valve is equipped with in the lower end in bottom, in the working cylinder; Being annular gas between composite cylinder outer wall and outer cylinder body inwall---the liquid accumulator, there is the low pressure oil catcher working cylinder lower end.
Fuel tank described in the utility model is sleeved on outside the outer cylinder body, certainly, also can adopt other suitable versions.
Low pressure oil catcher described in the utility model comprises the draw-off tray that is contained in outer cylinder bottom head lower end, forms annular oil cavity between draw-off tray inwall and working cylinder lower end and returning buffering valve flange end, and this annular oil cavity communicates with fuel tank through oil pipe.Certainly, also can adopt other suitable specific constructive form.
Annular gas described in the utility model---liquid accumulator comprises the toroidal cavity between composite cylinder outer wall and outer cylinder body inwall, has an annular isolation ring to be divided into epicoele and cavity of resorption in this toroidal cavity, and epicoele is a hydraulic cavities, and cavity of resorption is an air cavity.Certainly, also can adopt other suitable versions.
There is an oil suction chamber working cylinder described in the utility model upper end, and this oil suction chamber communicates with circular passage between composite cylinder inwall and working cylinder outer wall, and oilhole on the composite cylinder upper end wall and aforementioned gas---the hydraulic cavities in the liquid accumulator communicates.Certainly, also can adopt other suitable versions.
Hammer stem described in the utility model is divided into rod chamber and rodless cavity with working cylinder inwall cavity, and the cavity on the hammer stem front end is a rodless cavity.
Rod chamber lower end described in the utility model has and the aforementioned rod chamber fuel feed hole that is communicated by the circular passage that forms between composite cylinder inwall and working cylinder outer wall; There is the rodless cavity oil return opening described rodless cavity upper end, and this rodless cavity oil return opening communicates with fuel tank through oil pipe.Certainly, also can adopt other suitable specific constructive form.
The utility model has the advantages that: because the working cylinder rod chamber passes to pressure oil all the time; hit the backhaul immediately of back tup; thereby overcome shortcomings such as the vexed mould time length of traditional liquid pneumatic hammer, resilience double hit, simultaneously, the leakage of rod chamber trace can not influence the normal backhaul of tup.Owing to adopted the returning buffering valve, solved the backhaul bump problem that rod chamber presses hydraulic oil to bring usually.Rod chamber is pressed hydraulic oil usually, has broken away from traditional oil-feed and has hit the constraint that the liquid pneumatic hammer strike stroke of mode work is influenced by backhaul air cushion expansion character, goes for the transformation of long steaming hollow hammer of stroke.Owing to adopted the low pressure oil catcher, thereby do not had leakage substantially.The nothing pipe of realizing simple in structure, compact, basic connects.Excellent performance.
The utility model is described in further detail below in conjunction with drawings and Examples:
Accompanying drawing is a kind of electric liquid hammer power head structure schematic diagram of the present utility model.
Accompanying drawing has been described an embodiment of the present utility model.A working cylinder 18 is arranged in this example, hammer stem 24 is housed in the working cylinder 18, the working cylinder 18 outer composite cylinders 20 that are with, the composite cylinder 20 outer outer cylinder bodies 3 that are with, the outer cylinder body 3 outer fuel tanks 23 that are set with, loam cake 4 is arranged on the outer cylinder body 3, outer cylinder body has outer cylinder bottom head 19 for 3 times, in loam cake 4, working cylinder 18 upper ends are equipped with and are hit valve 5, in bottom 19, returning buffering valve 17 is equipped with in the lower end in the working cylinder 18, hammer stem 24 lower ends are connected to tup adapter sleeve 16, the outer wall of composite cylinder 20, it is hydraulic cavities 9 that the inwall of outer cylinder body 3 and annular isolation ring 21 have wherein formed epicoele, cavity of resorption is the annular gas of air cavity 12---a liquid accumulator, and the outer wall of the inwall of composite cylinder 20 and working cylinder 18 forms circular passage 10, and this circular passage 10 is with oil suction chamber 8 and gas---liquid accumulator hydraulic cavities 9 communicates by the some fuel feed holes on working cylinder 18 lower end walls with working cylinder rod chamber 13.The inwall of the flange end of the lower end of working cylinder 18 and returning buffering valve 17 and draw-off tray 15 forms annular oil cavity 14, and annular oil cavity 14 communicates with fuel tank, forms a low pressure oil catcher.
The operation principle of the foregoing description is: gas---the liquid accumulator is oil-filled when reaching certain pressure, and tup is back to the upper limit, is in the strike state of waiting for.During strike, order is hit valve 5 and is removed on rapidly and open, and opens the path of rodless cavity 6 in oil suction chamber 8 and the working cylinder 18, closes the path of rodless cavity 6 and oil return opening 7 simultaneously.At this moment, rod chamber 13 communicates with rodless cavity 6 by circular passage 10 and oil suction chamber 8, because the area of rodless cavity 6 is greater than rod chamber 13 areas, thereby realized differential, so the pressure oil that the pressure oil of the pressure oil of rod chamber 13, accumulator hydraulic cavities 9 and oil pump 22 are got together enters rodless cavity 6, add the deadweight effect of tup, realized that tup hits action fast.
During backhaul, strike valve 5 moves down rapidly closes, and rodless cavity 6 is connected by oil return opening 7 and fuel tank 23, owing to rod chamber 13 communicates with accumulator hydraulic cavities 9 by circular passage 10 all the time, thereby under the pressure oil effect, the tup quick return.Backhaul is prescribed a time limit near last, the adapter sleeve 16 that is connected with tup withstands the lower end of returning buffering valve 17 earlier, under the effect of tup backhaul inertia force, returning buffering valve 17 moves upward, closed the oil inlet passage of the rod chamber 13 of working cylinder 18, tup loses the effect of hydraulic oil, realizes returning buffering under the effect of deadweight.
The micro-leakage that the incomplete sealing of returning buffering valve 17 and working cylinder 18 and hammer stem 24 causes all comes together in the collection chamber 14 of low pressure oil catcher, and flow back to fuel tank 23, thereby the tendency of external leakage is minimum.
Hit the keying of valve 5, directly control,, can realize the control of blow energy by the opening time that valve 5 is hit in control by magnetic valve 11.
Present embodiment is equipped with hydraulic means when practical application, whole hydraulic means is by an electromagnetic pilot the unloader 1 oil-filled and off-load of 22 pairs of accumulators of realization oil pump automatically, and electromagnetic pilot overflow valve 2 is used for the protection of accumulator and oil extraction.
Claims (7)
1, a kind of electric liquid hammer unit head, it is characterized in that: a working cylinder is arranged, hammer stem is housed in the working cylinder, working cylinder is with composite cylinder outward, and composite cylinder is with outer cylinder body outward, and outer cylinder body is equipped with fuel tank outward; Loam cake is arranged on the outer cylinder body, outer cylinder bottom head is arranged under the outer cylinder body; In loam cake, working cylinder upper end is equipped with the strike valve, the returning buffering valve is equipped with in the lower end in bottom, in the working cylinder; Being annular gas between composite cylinder outer wall and outer cylinder body inwall---the liquid accumulator, there is the low pressure oil catcher working cylinder lower end.
2, electric liquid hammer unit head according to claim 1, it is characterized in that: described fuel tank is sleeved on outside the outer cylinder body.
3, electric liquid hammer unit head according to claim 1 and 2, it is characterized in that: described low pressure oil catcher comprises the draw-off tray that is contained in outer cylinder bottom head lower end, form annular oil cavity between draw-off tray inwall and working cylinder lower end and returning buffering valve flange end, this annular oil cavity communicates with fuel tank through oil pipe.
4, electric liquid hammer unit head according to claim 1 and 2, it is characterized in that: described annular gas---liquid accumulator, comprise the toroidal cavity between composite cylinder outer wall and outer cylinder body inwall, there is an annular isolation ring to be divided into epicoele and cavity of resorption in this toroidal cavity, epicoele is a hydraulic cavities, and cavity of resorption is an air cavity.
5, electric liquid hammer unit head according to claim 4 is characterized in that: there is an oil suction chamber described working cylinder upper end, and this oil suction chamber communicates with circular passage between composite cylinder inwall and working cylinder outer wall.And oilhole on the composite cylinder upper end wall and aforementioned gas---the hydraulic cavities in the liquid accumulator communicates.
6, electric liquid hammer unit head according to claim 5, it is characterized in that: described hammer stem is divided into rod chamber and rodless cavity with working cylinder inwall cavity, and the cavity on the hammer stem front end is a rodless cavity.
7, electric liquid hammer unit head according to claim 6 is characterized in that: described rod chamber lower end has and the aforementioned rod chamber fuel feed hole that communicates with the circular passage between composite cylinder inwall and working cylinder outer wall; There is the rodless cavity oil return opening described rodless cavity upper end, and this rodless cavity oil return opening communicates with fuel tank through oil pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95239639 CN2223156Y (en) | 1995-04-24 | 1995-04-24 | Electric hydraulic hammer unit head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95239639 CN2223156Y (en) | 1995-04-24 | 1995-04-24 | Electric hydraulic hammer unit head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2223156Y true CN2223156Y (en) | 1996-03-27 |
Family
ID=33881380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95239639 Expired - Fee Related CN2223156Y (en) | 1995-04-24 | 1995-04-24 | Electric hydraulic hammer unit head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2223156Y (en) |
-
1995
- 1995-04-24 CN CN 95239639 patent/CN2223156Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |