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EP0106161A1 - Hydraulic tensioning device for saw blades - Google Patents

Hydraulic tensioning device for saw blades Download PDF

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Publication number
EP0106161A1
EP0106161A1 EP83109053A EP83109053A EP0106161A1 EP 0106161 A1 EP0106161 A1 EP 0106161A1 EP 83109053 A EP83109053 A EP 83109053A EP 83109053 A EP83109053 A EP 83109053A EP 0106161 A1 EP0106161 A1 EP 0106161A1
Authority
EP
European Patent Office
Prior art keywords
pistons
hydraulic saw
base body
row
support bridge
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.)
Granted
Application number
EP83109053A
Other languages
German (de)
French (fr)
Other versions
EP0106161B1 (en
Inventor
Röttger Jansen-Herfeld Firma
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.)
JANSEN HERFELD ROETTGER FA
JANSEN-HERFELD ROETTGER FA
Original Assignee
JANSEN HERFELD ROETTGER FA
JANSEN-HERFELD ROETTGER FA
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
Application filed by JANSEN HERFELD ROETTGER FA, JANSEN-HERFELD ROETTGER FA filed Critical JANSEN HERFELD ROETTGER FA
Publication of EP0106161A1 publication Critical patent/EP0106161A1/en
Application granted granted Critical
Publication of EP0106161B1 publication Critical patent/EP0106161B1/en
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B3/00—Gang saw mills; Other sawing machines with reciprocating saw blades, specially designed for length sawing of trunks
    • B27B3/28—Components
    • B27B3/30—Blade attachments, e.g. saw buckles; Stretching devices
    • B27B3/34—Blade attachments, e.g. saw buckles; Stretching devices the stretching devices being actuated by fluid pressure

Definitions

  • Hydraulic saw clamps for frame saw machines have become known which consist of a body with a multiplicity of cylinders and associated pistons. These bodies were either arranged on one side on a frame plate or arranged on both frame plates to achieve uniform frame loading. These hydraulic saw clamps had the disadvantage that the cylinders could not be replaced if damaged and the entire unit had to be replaced. With the arrangement on both sides, it was disadvantageous that the lower half was under the influence of the dirty water in stone gates. The weight was also very high. If a single cylinder was defective, the entire saw clamp had to be replaced. With the one-sided arrangement, there was often a non-uniform loading of both frame plates.
  • the invention has for its object to avoid the disadvantages described above.
  • This object is achieved in that the cylinders consist of individual tubes which are fastened in or over bores in a base body and are connected to one another by longitudinal bores.
  • these cylinders are arranged symmetrically to two support bridges, which are at approximately the same distance from the clamping force line as the rows of pistons, the outer support bridge having comb-like recesses to ensure that the tensioning lever of the hinge rests on the correct support bridge assigned to the respective piston. Due to the individually installed cylinder tubes, they are interchangeable and can be made of rustproof material. The alternating arrangement of pistons or cylinders of the same size on the upper frame plate in stone gates reduces contamination.
  • Figure 2 shows such a hydraulic saw tensioner seen in the cutting direction of the saws.
  • the tensioning lever 1 the inner support bridge 3, the base body 8 and the inner pistons 6 of the inner piston row 14 and the outer pistons 10 of the outer piston row 13.
  • the distance between the pistons in the longitudinal direction, i. H. the piston pitch is 2F and the grid pitch F of the comb-like recesses 15 of the outer support bridge 2.
  • FIG. 1 shows the same hydraulic saw tensioner according to the section line I - II, the upper frame plate being designated 4.1 and the lower frame 4.2, the inner cylinder tubes 5 used, the piston seal and the outer cylinder tubes 9 with the outer pistons 10.
  • the outer row of pistons 13 lies at approximately the same distance A / 2 from the tensioning force line 12 of the tensioning force E as the outer support bridge 2.
  • the inner row of pistons 14 is also at the same distance B / 2 as the inner support bridge 3 from the tensioning force line 12.
  • the tensioning levers 1 rest the piston 6 of the inner row of pistons 14 and the inner support bridge 3 and, when raised by the pistons 6, engage in the recess 15 of the outer support bridge 2 or the tensioning lever 1 lies on the piston 10 and on the other side at a distance A on the support bridge 2 on their comb-like elevations, so that when the piston 10 is lifted, the tensioning lever 1 lifts off the support bridge 3 and thus only rests on the support bridge 2, as a result of which the frame plates 4.1 and 4.2 are again subjected to the same load.

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  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)

Abstract

1. Hydraulic saw tensioner with many cylinders and pistons, said the cylinders consist of separately inserted cylinder tubes (5 resp. 9), which are fixed in or above bore-holes (19) of the base body (8), connected with longitudinal bore-holes (18) and obturated against the base body (8) by means of joint rings (20).

Description

Es sind hydraulische Sägenspanner für Gattersägemaschinen bekannt geworden, die aus einem Körper mit einer Vielzahl von Zylindern und dazugehörigen Kolben bestehen. Diese Körper waren entweder einseitig auf einer Rahmenplatte angeordnet oder zur Erzielung gleichmäßiger Rahmenbelastung auf beiden Rahmenplatten angeordnet. Diese hydraulischen Sägenspanner hatten den Nachteil, daß die Zylinder bei Beschädigung nicht ausgetauscht werden konnten und somit das ganze Aggregat erneuert werden mußte. Bei der beidseitigen Anordnung war es nachteilig, daß die untere Hälfte unter dem Einfluß des Schmutzwassers bei Steingattern stand. Außerdem war das Gewicht sehr hoch. Wenn ein einzelner Zylinder defekt war, mußte der gesamte Sägenspanner ersetzt werden. Bei der einseitigen Anordnung war häufig eine nicht gleichmäßige Belastung beider Rahmenplatten gegeben.Hydraulic saw clamps for frame saw machines have become known which consist of a body with a multiplicity of cylinders and associated pistons. These bodies were either arranged on one side on a frame plate or arranged on both frame plates to achieve uniform frame loading. These hydraulic saw clamps had the disadvantage that the cylinders could not be replaced if damaged and the entire unit had to be replaced. With the arrangement on both sides, it was disadvantageous that the lower half was under the influence of the dirty water in stone gates. The weight was also very high. If a single cylinder was defective, the entire saw clamp had to be replaced. With the one-sided arrangement, there was often a non-uniform loading of both frame plates.

Der Erfindung liegt die Aufgabe zugrunde, oben geschilderte Nachteile zu vermeiden. Diese Aufgabe wird dadurch gelöst, daß die Zylinder aus Einzelrohren bestehen, die in oder über Bohrungen eines Grundkörpers befestigt sind und durch Längsbohrungen miteinander verbunden sind.The invention has for its object to avoid the disadvantages described above. This object is achieved in that the cylinders consist of individual tubes which are fastened in or over bores in a base body and are connected to one another by longitudinal bores.

außerdem sind diese Zylinder symmetrisch zu zwei AuflagebrUcken angeordnet, die in etwa gleichem Abstand zur Spannkraftlinie liegen wie die Kolbenreihen, wobei die äußere Auflagebrücke kammartige Ausnehmungen aufweist, um sicherzustellen, daß der Spannhebel der Angel auf der richtigen, den jeweiligen Kolben zugeordneten Auflagebrücke aufliegt. Durch die einzeln eingebauten Zylinderrohre sind diese austauschbar und können aus rostfreiem Material hergestellt sein. Durch die alternierende Anordnung gleich großer Kolben bzw. Zylinder auf der oberen Rahmenplatte bei Steingattern wird die Verschmutzung reduziert.In addition, these cylinders are arranged symmetrically to two support bridges, which are at approximately the same distance from the clamping force line as the rows of pistons, the outer support bridge having comb-like recesses to ensure that the tensioning lever of the hinge rests on the correct support bridge assigned to the respective piston. Due to the individually installed cylinder tubes, they are interchangeable and can be made of rustproof material. The alternating arrangement of pistons or cylinders of the same size on the upper frame plate in stone gates reduces contamination.

Figur 2 zeigt einen derartigen hydraulischen Sägenspanner in Schnittrichtung der Sägen gesehen. Hierbei ist der Spannhebel 1, die innere Auflagebrücke 3, der Grundkörper 8 und die inneren Kolben 6 der inneren Kolbenreihe 14 und die äußeren Kolben 10 der äußeren Kolbenreihe 13. Der Abstand der Kolben in Längsrichtung, d. h. die Kolbenteilung ist 2F und die Rasterteilung F der kammartigen Ausnehmungen 15 der äußeren Auflagebrücke 2.Figure 2 shows such a hydraulic saw tensioner seen in the cutting direction of the saws. Here, the tensioning lever 1, the inner support bridge 3, the base body 8 and the inner pistons 6 of the inner piston row 14 and the outer pistons 10 of the outer piston row 13. The distance between the pistons in the longitudinal direction, i. H. the piston pitch is 2F and the grid pitch F of the comb-like recesses 15 of the outer support bridge 2.

Figur 1 zeigt den gleichen hydraulischen Sägenspanner gemäß der Schnittlinie I - II, wobei die obere Rahmenplatte mit 4.1 und die untere mit 4.2 bezeichnet ist, die eingesetzten inneren Zylinderrohre 5, die Kolbendichtung und die äußeren Zylinderrohre 9 mit den äußeren Kolben 10.FIG. 1 shows the same hydraulic saw tensioner according to the section line I - II, the upper frame plate being designated 4.1 and the lower frame 4.2, the inner cylinder tubes 5 used, the piston seal and the outer cylinder tubes 9 with the outer pistons 10.

Die äußere Kolbenreihe 13 liegt im etwa gleichen Abstand A/2 zur Spannkraftlinie 12 der Spannkraft E wie die äußere Auflagebrücke 2. Die innere Kolbenreihe 14 liegt ebenfalls im gleichen Abstand B/2 wie die innere Auflagebrücke 3 zur Spannkraftlinie 12. Die Spannhebel 1 liegen auf den Kolben 6 der inneren Kolbenreihe 14 und der inneren Auflagebrücke 3 auf und greifen bei Anheben durch die Kolben 6 in die Ausnehmung 15 der äußeren Auflagebrücke 2 oder der Spannhebel 1 liegt auf den Kolben 10 und auf der anderen Seite im Abstand A auf der Auflagebrücke 2 auf deren kammartigen Erhebungen, so daß beim Anheben des Kolbens 10 der Spannhebel 1 von der Auflagebrücke 3 abhebt und somit nur auf der Auflagebrücke 2 aufliegt, wodurch wieder eine gleiche Belastung der Rahmenplatten 4.1 und 4.2 erzielt wird.The outer row of pistons 13 lies at approximately the same distance A / 2 from the tensioning force line 12 of the tensioning force E as the outer support bridge 2. The inner row of pistons 14 is also at the same distance B / 2 as the inner support bridge 3 from the tensioning force line 12. The tensioning levers 1 rest the piston 6 of the inner row of pistons 14 and the inner support bridge 3 and, when raised by the pistons 6, engage in the recess 15 of the outer support bridge 2 or the tensioning lever 1 lies on the piston 10 and on the other side at a distance A on the support bridge 2 on their comb-like elevations, so that when the piston 10 is lifted, the tensioning lever 1 lifts off the support bridge 3 and thus only rests on the support bridge 2, as a result of which the frame plates 4.1 and 4.2 are again subjected to the same load.

BezugszeichenlisteReference symbol list

  • 1 Spannhebel1 tension lever
  • 2 äußere Auflagebrücke2 outer support bridges
  • 3 innere Auflagebrücke3 inner support bridges
  • 4.1 obere Rahmenplatte4.1 upper frame plate
  • 4.2 untere Rahmenplatte4.2 lower frame plate
  • 5 inneres Zylinderrohr5 inner cylinder tube
  • 6 innere Kolben6 inner pistons
  • 7 Kolbendichtung7 piston seal
  • 8 Grundkörper8 basic bodies
  • 9 äußeres Zylinderrohr9 outer cylinder tube
  • 10 äußere Kolben10 outer pistons
  • 11 Angelschaft11 crew
  • 12 Spannkraftlinie12 tension line
  • 13 äußere Kolbenreihe13 outer row of pistons
  • 14 innere Kolbenreihe14 inner row of pistons
  • 15 Ausnehmung15 recess
  • 16 Gegenplatte16 counter plate
  • 17 Zugschrauben17 lag screws
  • 18 Längsbohrung18 longitudinal bore
  • 19 Bohrung19 hole
  • 20 Zylinderdichtung
    • A äußerer Hebelarm
    • B innerer Hebelarm
    • E Spannkraft
    • F Rasterteilung
    20 cylinder gasket
    • A outer lever arm
    • B inner lever arm
    • E resilience
    • F grid pitch

Claims (6)

1) Hydraulischer Sägenspanner mit einer Vielzahl von Zylindern und Kolben dadurch gekennzeichnet, daß die Zylinder von separat eingesetzten Zylinderrohren (5 bzw. 9) gebildet werden, die in oder über Bohrungen (19) des Grundkörpers (8) befestigt sind und durch Längsbohrungen (18) miteinander verbunden sind und durch Dichtungen (20) gegenüber dem Grundkörper (8) abgedichtet sind.1) Hydraulic saw tensioner with a plurality of cylinders and pistons, characterized in that the cylinders are formed by separately inserted cylinder tubes (5 or 9) which are fastened in or over bores (19) of the base body (8) and through longitudinal bores (18 ) are connected to one another and are sealed off from the base body (8) by seals (20). 2) Hydraulischer Sägenspanner nach Anspruch 1 dadurch gekennzeichnet, daß die Zylinderrohre (5 bzw. 9) in zwei Reihen (13 und 14) angeordnet sind und um die Rasterteilung (F) in Längsrichtung zueinander versetzt sind.2) Hydraulic saw clamp according to claim 1, characterized in that the cylinder tubes (5 and 9) are arranged in two rows (13 and 14) and are offset from one another in the longitudinal direction by the grid pitch (F). 3) Hydraulischer Sägenspanner nach einem oder mehreren der Ansprüche 1 bis 2 dadurch gekennzeichnet, daß jeder Kolbenreihe (13 bzw. 14) eine Auflagebrücke (2 bzw. 3) zugeordnet ist, wobei die äußere Auflagebrücke (2) kammartige Ausnehmungen (15) aufweist, die so lang wie der halbe Abstand der Kolben in einer Kolbenreihe sind.3) Hydraulic saw clamp according to one or more of claims 1 to 2, characterized in that each row of pistons (13 or 14) is assigned a support bridge (2 or 3), the outer support bridge (2) having comb-like recesses (15), that are as long as half the distance of the pistons in a row of pistons. 4) Hydraulischer Sägenspanner nach einem oder mehreren der Ansprüche 1 bis 3 dadurch gekennzeichnet, daß der Abstand der Kolbenreihe (13 bzw. 14) zur Spannkraftlinie (12) etwa gleich groß ist wie der Abstand der Auflagebrücke (2 bzw. 3) zur Spannkraftlinie (12).4) Hydraulic saw tensioner according to one or more of claims 1 to 3, characterized in that the distance between the row of pistons (13 or 14) to the clamping force line (12) is approximately the same size as the distance of the support bridge (2 or 3) to the clamping force line ( 12). 5) Hydraulischer Sägenspanner nach einem oder mehreren der Ansprüche 1 bis 4 dadurch gekennzeichnet, daß die Zylinderrohre (5 bzw. 9) mittels Zugschrauben (17) zwischen dem Grundkörper (8) und der Gegenplatte (16) eingespannt sind.5) Hydraulic saw tensioner according to one or more of claims 1 to 4, characterized in that the cylinder tubes (5 and 9) are clamped by means of lag screws (17) between the base body (8) and the counter plate (16). 6) Hydraulischer Sägenspanner nach einem oder mehreren der Ansprüche 1 bis 5 dadurch gekennzeichnet, daß die Kolben (6 bzw. 10) vom Kolbenboden ausgehende Sacklöcher von mindestens 20 mm Tiefe und mindestens 22 mm Durchmesser aufweisen.6) Hydraulic saw clamp according to one or more of claims 1 to 5, characterized in that the pistons (6 or 10) from the piston head have blind holes of at least 20 mm depth and at least 22 mm diameter.
EP83109053A 1982-09-17 1983-09-14 Hydraulic tensioning device for saw blades Expired EP0106161B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19823234500 DE3234500A1 (en) 1982-09-17 1982-09-17 HYDRAULIC SAW TENSIONER
DE3234500 1982-09-17

Publications (2)

Publication Number Publication Date
EP0106161A1 true EP0106161A1 (en) 1984-04-25
EP0106161B1 EP0106161B1 (en) 1986-09-17

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ID=6173479

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Application Number Title Priority Date Filing Date
EP83109053A Expired EP0106161B1 (en) 1982-09-17 1983-09-14 Hydraulic tensioning device for saw blades

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EP (1) EP0106161B1 (en)
DE (2) DE3234500A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3730720A1 (en) * 1987-09-12 1989-03-23 Jansen Herfeld Roettger Fa Hydraulic saw tensioner for cutting very thin plates

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3514728A1 (en) * 1985-04-24 1986-10-30 Fa. Röttger Jansen-Herfeld, 5630 Remscheid HYDRAULIC SAW TENSIONER WITH EXTERNAL SEAL
AT387537B (en) * 1987-08-28 1989-02-10 Thoeress Dietmar CLAMPING DEVICE FOR BLADE BLADES
DE19915424C2 (en) * 1998-04-09 2000-05-04 Werner Duerr Hydraulic clamping device for saw blades in frame saws - wood processing

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2113909A (en) * 1934-10-20 1938-04-12 Otto Lauenstein Device for stretching saw blades, particularly in sawmills
DE1169641B (en) * 1960-01-26 1964-05-06 Josef Thoeress Hydraulic saw clamp
DE2026175A1 (en) * 1970-05-29 1971-12-09 Engels, Hermann, 2407 Bad Schwartau Saw clamp for gang saws

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2113909A (en) * 1934-10-20 1938-04-12 Otto Lauenstein Device for stretching saw blades, particularly in sawmills
DE1169641B (en) * 1960-01-26 1964-05-06 Josef Thoeress Hydraulic saw clamp
DE2026175A1 (en) * 1970-05-29 1971-12-09 Engels, Hermann, 2407 Bad Schwartau Saw clamp for gang saws

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DE - B - J 4329 XII/38a (R. JANSEN) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3730720A1 (en) * 1987-09-12 1989-03-23 Jansen Herfeld Roettger Fa Hydraulic saw tensioner for cutting very thin plates

Also Published As

Publication number Publication date
EP0106161B1 (en) 1986-09-17
DE3234500A1 (en) 1984-03-22
DE3366307D1 (en) 1986-10-23

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