US3683666A - Counter-blow hammer with a hammer drive - Google Patents

Counter-blow hammer with a hammer drive Download PDF

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Publication number
US3683666A
US3683666A US51746A US3683666DA US3683666A US 3683666 A US3683666 A US 3683666A US 51746 A US51746 A US 51746A US 3683666D A US3683666D A US 3683666DA US 3683666 A US3683666 A US 3683666A
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US
United States
Prior art keywords
hammer
tup
piston
hammer tup
frame
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 - Lifetime
Application number
US51746A
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English (en)
Inventor
Harald Hassel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Langenstein and Schemann GmbH
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Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE19691933005 external-priority patent/DE1933005C/de
Application filed by Individual filed Critical Individual
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Publication of US3683666A publication Critical patent/US3683666A/en
Assigned to LANGENSTEIN & SCHEMANN GMBH reassignment LANGENSTEIN & SCHEMANN GMBH CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). EFFECTIVE JAN. 4, 1983. Assignors: LANGENSTEIN & SCHEMANN AKTIENGESELLSCHAFT
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J7/00—Hammers; Forging machines with hammers or die jaws acting by impact
    • B21J7/20—Drives for hammers; Transmission means therefor
    • B21J7/22—Drives for hammers; Transmission means therefor for power hammers
    • B21J7/34—Drives for hammers; Transmission means therefor for power hammers operating both the hammer and the anvil, so-called counter-tup

Definitions

  • I ABSTRACT Counter'blow hammer comprising a hammer frame in which are mounted an upper hammer and a lower hammer, hydraulic upper and lower piston and cylinder type hammer drives respectively and a further pressure fluid piston and cylinder device or devices which act on the lower hammer to impart a pushing effect on it.
  • the invention relates to a counter-blow hammer of the kind having an upper hammer tup and a lower hammer tup arranged in a hammer frame and a hammer drive, which works hydraulically with expanding pressurized fluid for the driving stroke and under the compression of the pressurized fluid for the return stroke, for which purpose there are provided pistoncylinder devices acting between the hammer tup and the hammer tup frame, of which, during operation, one pushes the hammer tup and the other pulls the hammer tup.
  • the hammer drive of the lower hammer tup has a pistoncylinder device which operates hydraulically for the return stroke and has a pulling action and a pistoncylinder device combined with the latter operating hydraulically for the driving stroke and with a pushing action.
  • the hammer drive of the upper hammer tup has a piston-cylinder device operat* ing with expanding pressurized fluid for the drive stroke with a pushing effect and a piston-cylinder device combined with the latter operating hydraulically for the return stroke and with a pulling effect.
  • the invention provides a counter-blow hammer of the kind specified which is characterized in that the lower hammer is driven by a piston-cylinder device working with expanding pressurized fluid with a pushing effect, and a separate further hydraulically operating piston-cylinder device with a pushing effect.
  • a countercoupling of the lower hammer tup and upper hammer tup can be eliminated, so that a piston-cylinder device serving for the counter-coupling and engaging the lower hammer 'tup is eliminated.
  • a counter-blow hammer In a counter-blow hammer according to the invention there are no hydraulics in the lower hammer part and the entire hydraulic drive is located in the hammer head. Pressure fluid members and pipes are not necessary outside the hammer head. A simple protection which is reliable in operation and shock absorbent is provided for the excesses of the stroke which are always unavoidable without counter-coupling. An impact of the lower hammer tup on the hammer tup frame is neither possible with upward excesses of the stroke nor with downward excesses of the stroke.
  • FIG. 1 A preferred embodiment of the invention is illustrated in the drawing.
  • the drawing shows a counterblow hammer in a cutaway side view.
  • the counter-blow hammer according to the drawing has in a hammer tup frame 1, an upper hammer tup 2, which is guided in a lower hammer tup 3 and principally during the stroke in the hammer tup frame 1 by means of projections.
  • the upper hammer 2 is moved up and down bymeans of a piston 50 having a piston rod 5 and guided in a cylinder 4.
  • the lower hammer tup 3 is guided in the hammer tup frame at 51 and 52.
  • the piston rods 10 at the contact points 47 are not attached to the lower hammers, so that the lower hammer tup 3 can become disengaged from the piston rods 10 under the action of stops 45 and carry out an additional stroke 48.
  • the pistons 8 are not connected at the pressure points 49 to the base plate 7, so that the lower hammer tup 3 can exceed its normal stroke limited by stops 46 in an upward direction, taking the piston 8 with it.
  • the stops 46 are formed by the walls forming the cylinder volumes 6 and co-operate with the parts of the pistons 8 located in the cylinder volumes 6.
  • the drive conveniently takes place by means of two pumps 11, 12 with a constant delivery. They are respectively connected by means of valves 13, 14 to circulating pipes 15, 16. From the pumps 11, 12 flow takes place through respective non-return valves 17, 18 to a common pipe 19 to a control slide valve 20 and further, through a pipe 21, to a pressure fluid space 22 of an accumulator 53 loaded by pistons 23 by gas or air pressure in the cylinder space 24. From the piston 23 projects, in an upwards direction, a control rod 43, which can co-operate with a limit switch 44.
  • a pipe 26 leads through a non-return valve 25 to the control slide valve 20.
  • the cylinder 4 is connected by means of pipes 40, 27 and a suction valve 28 to a reservoir 29, and by means of the pipe 40 and a pipe 30, as well as a nonreturn valve 31, to the pressure fluid space 22 of the accummulator 53.
  • the annular cylinder 32 defined under the piston 50 is in constant communication with the space 22 by means of a pipe 33.
  • Pipes 35 lead from the cylinders 34 through a common non-return valve 36 to the pressure fluid space 22.
  • the control slide valve 20 is connected to the cylinder 4 by two pipes 39, 40. Furthermore, it can be connected by a slide valve 41 to the reservoir 29. It is connected directly to the latter by a pipe 42 and the pipe 27.
  • the upper hammer tup 2 is, however, allowed to move somewhat faster than a speed which corresponds with this ratio.
  • the control valve 20 is returned for example by an adjustable, electronic timing circuit which is not shown. Since the valve 41 remains in its left-hand limit position, the pipe 39 and thus also the cylinder 4 is now connected to the reservoir 29; Therefore the upper hammer tup is moved upwards due to the pressure in the cylinder 32.
  • the pistons 9 have such large dimensions that the pressure in the cylinders 34 is always considerably less than the pressure in the pressure fluid space 22 until the pistons 9 no longer contact the stops 45.
  • a central piston In place of the two pistons 8 there may be used a central piston.
  • the arrangement of two pistons has the sole purpose of keeping free the center for the possible addition of an ejector. It is also possible to arrange the cylinders 6 in the base plate 7 in place of in the lower hammer tup 3 and to allow the pistons 8 to push against the lower hammer tup instead of against the base plate. In this case the pistons and lower hammer tup are unconnected with each other. In addition it is possible to connect the piston rod 10 t0 the lower hammer tup 3 and to disconnect it from the piston 9.
  • the lower hammer tup 3 has flanges which project laterally instead of sides which project upwards and the hydraulic piston-cylinder arrangements bringing about the return stroke are set deeper, nearer to the ground 54. It is also possible to connect the piston rods 10 to the lower hammer tup 3 rigidly and to provide separate buffers below the lower hammer tup.
  • a counter-blow hammer comprising l a hammer frame, (2) an upper hammer tup and a lower hammer tup mounted separately on the hammer frame to be movable towards and away from each other, (3) a piston and cylinder device for moving the upper hammer tup, said device being fixedly connected between the hammer frame and the upper hammer tup, and (4) a hammer drive for moving the lower hammer tup, the hammer drive including (a) at least one gas pressure operated piston and cylinder device disposed between the frame and the lower hammer tup for urging the lower hammer tup towards the upper hammer tup, (b) at least one hydraulically operated piston and cylinder device for urging the lower hammer tup away from the upper hammer tup, each said hydraulically operated piston and cylinder device being disposed between the frame and the lower hammer tup and above the gas pressure operated piston and cylinder device, (c) means fixedly connecting
  • a counter-blow hammer as claimed in claim 2 wherein projections on the hammer frame guide the upper hammer tup above the side pieces of the U- shaped lower hammer tup and a piston rod of each hydraulically operating piston and cylinder device passes through an aperture in one of the projections.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Forging (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
  • Actuator (AREA)
US51746A 1969-06-28 1970-06-29 Counter-blow hammer with a hammer drive Expired - Lifetime US3683666A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691933005 DE1933005C (de) 1969-06-28 Antrieb eines Unterbären eines Gegenschlaghammer

Publications (1)

Publication Number Publication Date
US3683666A true US3683666A (en) 1972-08-15

Family

ID=5738359

Family Applications (1)

Application Number Title Priority Date Filing Date
US51746A Expired - Lifetime US3683666A (en) 1969-06-28 1970-06-29 Counter-blow hammer with a hammer drive

Country Status (6)

Country Link
US (1) US3683666A (US06815460-20041109-C00097.png)
JP (1) JPS5021016B1 (US06815460-20041109-C00097.png)
CS (1) CS149914B2 (US06815460-20041109-C00097.png)
FR (1) FR2048021B1 (US06815460-20041109-C00097.png)
GB (1) GB1278155A (US06815460-20041109-C00097.png)
HU (1) HU168249B (US06815460-20041109-C00097.png)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4796428A (en) * 1983-01-17 1989-01-10 Oilgear Towler, Inc. Double-acting forging hammer and method
US5568766A (en) * 1993-09-02 1996-10-29 Maschinenfabrik Mueller-Weingarten Ag Method for controlling the drive for a hydraulic press having a plurality of operating phases
CN102886479A (zh) * 2012-10-26 2013-01-23 常州市立威刀具有限公司 对击联动式模锻装置
CN110565638A (zh) * 2019-08-30 2019-12-13 上海工程机械厂有限公司 一种液压打桩锤的锤芯及其提升机构
CN113027347A (zh) * 2021-03-30 2021-06-25 南通大学 一种可重复反击破岩的防卡钻钻头及防卡钻方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54161520U (US06815460-20041109-C00097.png) * 1978-04-20 1979-11-12
JPS54149112A (en) * 1978-05-10 1979-11-22 Meidensha Electric Mfg Co Ltd Electric vehicle
FR2432347A1 (fr) * 1978-08-01 1980-02-29 Stepantsov Georgy Marteau dont la masse tombante et l'enclume mobile sont animees d'un mouvement de rencontre

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3135140A (en) * 1962-04-19 1964-06-02 Us Industries Inc High-energy impact machine
US3180129A (en) * 1961-10-19 1965-04-27 Eumuco Ag Fur Maschb Top-pressure forging hammer
US3271991A (en) * 1965-10-11 1966-09-13 Int Electronic Res Corp High energy impact machine
US3353396A (en) * 1962-10-31 1967-11-21 Langenstein & Schemann Ag Swaging hammers
US3404555A (en) * 1964-11-12 1968-10-08 Josef K. Murek High energy rate forming machine
US3427856A (en) * 1966-03-14 1969-02-18 Kobe Steel Ltd High speed returning impact forming machine
US3429174A (en) * 1965-02-10 1969-02-25 Langestein & Schemann Ag Presses

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3180129A (en) * 1961-10-19 1965-04-27 Eumuco Ag Fur Maschb Top-pressure forging hammer
US3135140A (en) * 1962-04-19 1964-06-02 Us Industries Inc High-energy impact machine
US3353396A (en) * 1962-10-31 1967-11-21 Langenstein & Schemann Ag Swaging hammers
US3404555A (en) * 1964-11-12 1968-10-08 Josef K. Murek High energy rate forming machine
US3429174A (en) * 1965-02-10 1969-02-25 Langestein & Schemann Ag Presses
US3271991A (en) * 1965-10-11 1966-09-13 Int Electronic Res Corp High energy impact machine
US3427856A (en) * 1966-03-14 1969-02-18 Kobe Steel Ltd High speed returning impact forming machine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4796428A (en) * 1983-01-17 1989-01-10 Oilgear Towler, Inc. Double-acting forging hammer and method
US5568766A (en) * 1993-09-02 1996-10-29 Maschinenfabrik Mueller-Weingarten Ag Method for controlling the drive for a hydraulic press having a plurality of operating phases
CN102886479A (zh) * 2012-10-26 2013-01-23 常州市立威刀具有限公司 对击联动式模锻装置
CN110565638A (zh) * 2019-08-30 2019-12-13 上海工程机械厂有限公司 一种液压打桩锤的锤芯及其提升机构
CN110565638B (zh) * 2019-08-30 2024-06-11 上海工程机械厂有限公司 一种液压打桩锤的锤芯及其提升机构
CN113027347A (zh) * 2021-03-30 2021-06-25 南通大学 一种可重复反击破岩的防卡钻钻头及防卡钻方法

Also Published As

Publication number Publication date
CS149914B2 (US06815460-20041109-C00097.png) 1973-08-23
HU168249B (US06815460-20041109-C00097.png) 1976-03-28
FR2048021B1 (US06815460-20041109-C00097.png) 1974-11-08
DE1933005A1 (de) 1971-01-21
JPS5021016B1 (US06815460-20041109-C00097.png) 1975-07-19
GB1278155A (en) 1972-06-14
DE1933005B2 (de) 1971-05-19
FR2048021A1 (US06815460-20041109-C00097.png) 1971-03-19

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Legal Events

Date Code Title Description
AS Assignment

Owner name: LANGENSTEIN & SCHEMANN GMBH

Free format text: CHANGE OF NAME;ASSIGNOR:LANGENSTEIN & SCHEMANN AKTIENGESELLSCHAFT;REEL/FRAME:004170/0057

Effective date: 19830708