DE69423636T2 - Hydraulic circuit for hydraulic log splitter - Google Patents
Hydraulic circuit for hydraulic log splitterInfo
- Publication number
- DE69423636T2 DE69423636T2 DE69423636T DE69423636T DE69423636T2 DE 69423636 T2 DE69423636 T2 DE 69423636T2 DE 69423636 T DE69423636 T DE 69423636T DE 69423636 T DE69423636 T DE 69423636T DE 69423636 T2 DE69423636 T2 DE 69423636T2
- Authority
- DE
- Germany
- Prior art keywords
- hydraulic
- control valve
- log
- piston
- force
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
- B27L7/00—Arrangements for splitting wood
Abstract
An improved hydraulic log splitter which includes a hydraulic reservoir 38 formed integrally with a frame 14 of the log splitter. Hydraulic fluid from the reservoir 38 is supplied by a pump 30 to a control valve 46. A fluid passage is open through the control valve 46 to a hydraulic intensifier 21 which includes a cylinder 24 and a piston 22 extendable from the cylinder. The piston 22 pushes a log 12 against a stationary splitting wedge 18. The piston 22 is urged toward a retracted position by a return spring 72 internal to the cylinder 24. When the control valve 46 is in other than an "extend" position, hydraulic fluid supplied to the control valve 46 is allowed to flow into a return conduit 48 back to the reservoir. In this condition, the pressure of the hydraulic fluid develops insufficient force to overcome the force exerted by the return spring 72, and the ram remains retracted. When the control valve 46 is placed in the "extend" position, fluid that flows to the return conduit 48 is blocked and the pressure in the hydraulic intensifier 21 rises to overcome the force of the spring 72 and advance the ram. A log 12 placed on the splitter is thus driven by the piston 22 to be split by the wedge 18. The wedge 18 is designed to force the log 12 against guide rails 36 during splitting. <IMAGE>
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP94309714A EP0718078B1 (en) | 1994-12-22 | 1994-12-22 | Hydraulic circuit for a hydraulic log splitter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE69423636D1 DE69423636D1 (en) | 2000-04-27 |
| DE69423636T2 true DE69423636T2 (en) | 2000-11-23 |
Family
ID=8217958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE69423636T Expired - Fee Related DE69423636T2 (en) | 1994-12-22 | 1994-12-22 | Hydraulic circuit for hydraulic log splitter |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0718078B1 (en) |
| AT (1) | ATE190896T1 (en) |
| DE (1) | DE69423636T2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007075905A1 (en) * | 2005-12-22 | 2007-07-05 | Mtd Products Inc. | Integral valve cylinder design for log splitter |
| FI121414B (en) * | 2009-04-21 | 2010-11-15 | Maaselaen Kone Oy | Method of making firewood with a wood-burning machine and wood-burning machine |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE908790C (en) * | 1945-01-03 | 1954-04-08 | Adolf Hoeschle | Process and device for the production of tank wood |
| CH244777A (en) * | 1945-02-01 | 1946-09-30 | Sueffert Buerner Fritz | Log splitter. |
| US3077214A (en) * | 1959-08-27 | 1963-02-12 | Waco Aircraft Co | Log splitter |
| US3640323A (en) * | 1969-11-05 | 1972-02-08 | Sawmill Hydraulics Inc | Apparatus for splitting and chopping timber |
| IT1141897B (en) * | 1980-11-10 | 1986-10-08 | Marigonda Gabriella | HYDRAULIC JACK SPLITTER OPERATED BY THE MOTOR OF A PORTABLE CHAINSAW |
| FR2504053A1 (en) * | 1981-04-16 | 1982-10-22 | Unicum Sa | Log-splitting hydraulic press - uses hydraulic car jack to push log onto wedge with thrust applied via head with spike set in shallow conical face |
| US4615366A (en) * | 1985-07-08 | 1986-10-07 | Scarbrough Jr John D | Log splitter with rapid return hydraulic cylinder |
| SE469375B (en) * | 1991-01-04 | 1993-06-28 | Jerzy Janczak | LOG SPLITTER |
| SE9200484L (en) * | 1992-02-18 | 1993-08-19 | Jerzy Janczak | Hydraulic power tool |
-
1994
- 1994-12-22 AT AT94309714T patent/ATE190896T1/en not_active IP Right Cessation
- 1994-12-22 EP EP94309714A patent/EP0718078B1/en not_active Expired - Lifetime
- 1994-12-22 DE DE69423636T patent/DE69423636T2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP0718078A1 (en) | 1996-06-26 |
| EP0718078B1 (en) | 2000-03-22 |
| DE69423636D1 (en) | 2000-04-27 |
| ATE190896T1 (en) | 2000-04-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8339 | Ceased/non-payment of the annual fee |