DE8809544U1 - Hydraulic saw tensioner with minimum residual pressure - Google Patents

Hydraulic saw tensioner with minimum residual pressure

Info

Publication number
DE8809544U1
DE8809544U1 DE8809544U DE8809544U DE8809544U1 DE 8809544 U1 DE8809544 U1 DE 8809544U1 DE 8809544 U DE8809544 U DE 8809544U DE 8809544 U DE8809544 U DE 8809544U DE 8809544 U1 DE8809544 U1 DE 8809544U1
Authority
DE
Germany
Prior art keywords
pressure
valve
hydraulic
residual pressure
tensioner
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
Application number
DE8809544U
Other languages
German (de)
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.)
Individual
Original Assignee
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
Application filed by Individual filed Critical Individual
Priority to DE8809544U priority Critical patent/DE8809544U1/en
Publication of DE8809544U1 publication Critical patent/DE8809544U1/en
Expired legal-status Critical Current

Links

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

Landscapes

  • 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)
  • Safety Valves (AREA)

Description

• » · r · r«• » · r · r«

Röttger Jansen-HerfeldRöttger Jansen-Herfeld

Königstr. 144-146, 5630 RemscheidKönigstr. 144-146, 5630 Remscheid Hydraulischer Sägenspanner mit MindestrestdruckHydraulic saw tensioner with minimum residual pressure

Es sind hydraulische Gattersägenspanner für Gattersägen zum Schneiden von Steinen, in denen die Sägeblätter in den meisten Fällen horizontal angeordnet sind, bekannt geworden, die zum Entspannen der Sägeblätter deri Öldruck auf 0 bar absenkten, wodurch sämtliche Sägeblätter völlig lose wurden und somit in der Maschine unkontrolliert zur Seite fielen, wodurch eine erhebliche Verlängerung der Rüstzeit durch das schwierigere Herausnehmen der Sägeblätter bewirkt wurde.Hydraulic gang saw tensioners for gang saws for cutting stone, in which the saw blades are in most cases arranged horizontally, have become known, which reduced the oil pressure to 0 bar in order to relax the saw blades, causing all the saw blades to become completely loose and thus fall to the side in an uncontrolled manner in the machine, which resulted in a considerable increase in the set-up time due to the more difficult removal of the saw blades.

Der Erfindung liegt die Aufgabe zugrunde, einen hydraulischen Gattersägenspanner zu schaffen, der die Sägeblätter in ihrer ursprünglichen gespannten Position hält, andererseits jedoch eine Demontage derselben ermöglicht.The invention is based on the object of creating a hydraulic gang saw tensioner which holds the saw blades in their original tensioned position, but at the same time enables them to be dismantled.

Der erfindungsgemäße hydraulische Sägenspanner weist zwei Druckbegrenzungsventile auf, von denen das eine den Maximaldruck bzw. den Spanndruck begrenzt und ein zweites, feinfühliges Begrenzungsventil, das einen Restdruck beim Entspannen der Sägeblätter gewährleistet, wodurch die Sägeblätter in geordneter Lage verbleiben und somit auch die Zwischensciicsblonen nicht wahllos aus dem Einhangpaket fallen,.The hydraulic saw tensioner according to the invention has two pressure relief valves, one of which limits the maximum pressure or the clamping pressure and a second, sensitive limiting valve that ensures a residual pressure when the saw blades are relaxed, which means that the saw blades remain in an orderly position and thus the intermediate saw blades do not fall randomly out of the hanging package.

Ferner ist der hydraulische Gattersägenspanner mit seiner Pumpe verbunden, die während des Herausnehmens der Sägen den Öldruck aufrecht erhalten kann, und zwar in der durch das zweite Druckbegrenzungsventil vorgegebenen Druckhöhe, da beim Herausnehmen derFurthermore, the hydraulic frame saw tensioner is connected to its pump, which can maintain the oil pressure during the removal of the saws, namely at the pressure level specified by the second pressure relief valve, since when the saws are removed

einzelnen Sägen die noch leicht unter Druck stehenden Kolben r.msgedrückt werden und somit der Druck sonst abfallen würde.individual saws the pistons, which are still slightly under pressure, are pressed r.ms and thus the pressure would otherwise drop.

Die einzige Figur zeigt den hydraulischen Gattersägenspanner (1), der durch ein Lei t-ungssystem mit der Pumpe (2) verbunden ist und das zur Einstellung des opanndrucks erforderliche Druckbegrenzungsventil (3), und das zur Einstellung des Restdrucks feinstufige Restdruckbegrenzungsventil (4), darch das das rückströmendo Öl aus dem hydraulischen Sägenspanner fließt, wenn der Hauptabsperrhahn (6) geöffnet wird. Zum völligen Ablassen des Druckes ist der Bypass-Absperr hahn (7) geöffnet. Die jeweils eingestellten Drücke sind mittels Manometer (5) ablesbar.The only figure shows the hydraulic gang saw tensioner (1), which is connected to the pump (2) by a pipe system and the pressure relief valve (3) required to set the opening pressure, and the fine-tuned residual pressure relief valve (4) for setting the residual pressure, through which the backflowing oil flows out of the hydraulic saw tensioner when the main shut-off valve (6) is opened. To completely release the pressure, the bypass shut-off valve (7) is opened. The set pressures can be read using the pressure gauge (5).

Il ·■ * · «· tiIl ·■ * · «· ti

BezugszeichenlisteList of reference symbols

1 hydraulischer Gattersägenspanner1 hydraulic gang saw tensioner

2 Pumpe2 Pump

3 Druckbegrenzungsventil3 Pressure relief valve

4 Restdruckbegrenzungsventil4 Residual pressure relief valve

5 Manometer5 pressure gauges

HciupLdbüjjejL L Bypass-AbsperrhahnHciupLdbüjjejL L Bypass shut-off valve

Claims (1)

AnsprücheExpectations 1) Hydraulischer Gattersägenspanner (1) zum Spannen von Gattersägeblättern zum Schneiden von Steinblöcken mit einer Pumpe (2) zur Erzeugung des erforderlichen Öldrucks, dadurch gekennzeichnet, daß in die Rücklaufleitung vom hydraulischen Sägenspannar (1) zur Pumpe (2) ein Restdruckbegrenzungsventil (4) mit einem Bypass-Absperrhahn (7) eingebaut ist neben dem den Hochdruck begrenzenden Druckbegrenzungsventil (3) und dem Hauptabsperrhahn '(6), wobei das Restdruckventil (4) wesentlich feinfühliger ist als das Druckbegrenzungsventil (3) zur Einstellung des Spann- bzw. Maximaldrueks. 1) Hydraulic gang saw tensioner (1) for tensioning gang saw blades for cutting stone blocks with a pump (2) for generating the required oil pressure, characterized in that a residual pressure relief valve (4) with a bypass shut-off valve (7) is installed in the return line from the hydraulic saw tensioner (1) to the pump (2) next to the pressure relief valve (3) limiting the high pressure and the main shut-off valve (6), whereby the residual pressure valve (4) is significantly more sensitive than the pressure relief valve (3) for setting the tensioning or maximum pressure.
DE8809544U 1988-07-27 1988-07-27 Hydraulic saw tensioner with minimum residual pressure Expired DE8809544U1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE8809544U DE8809544U1 (en) 1988-07-27 1988-07-27 Hydraulic saw tensioner with minimum residual pressure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE8809544U DE8809544U1 (en) 1988-07-27 1988-07-27 Hydraulic saw tensioner with minimum residual pressure

Publications (1)

Publication Number Publication Date
DE8809544U1 true DE8809544U1 (en) 1988-12-08

Family

ID=6826328

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8809544U Expired DE8809544U1 (en) 1988-07-27 1988-07-27 Hydraulic saw tensioner with minimum residual pressure

Country Status (1)

Country Link
DE (1) DE8809544U1 (en)

Similar Documents

Publication Publication Date Title
DE8809544U1 (en) Hydraulic saw tensioner with minimum residual pressure
DE1955429U (en) QUICK CLAMPING DEVICE, ESPECIALLY FOR THREE-KNIFE CUTTING MACHINE.
DE921563C (en) Clamping ring lock for pit stamp
DE3828228A1 (en) Hydraulic saw tightener with minimum residual pressure
DE3735883C2 (en)
DE807693C (en) Fastening device for railroad tracks lying on rib support plates by means of a resilient clamping bracket
DE2160556A1 (en) Hydraulic switching of working cylinders connected in parallel, especially on injection molding machines
DE1931310A1 (en) Hydraulic saw clamp
AT7886B (en) Adjustment device for thread cutting clips.
DE721246C (en) Scaffolding rope
DE667128C (en) High-pressure single-tube steam generator with forced flow of the working medium
DE625460C (en) Hand straw cutter convertible into a hand straw press with binding device
AT215456B (en) Device for fastening rails u. a. Objects
AT120628B (en) Device for tensioning wooden formwork for concrete walls by means of wires.
DE7216860U (en) Clamping device for flexible printing plates
DE578691C (en) Thread cutting stock in which the tangential die holders are slidably arranged within a square frame-like boundary
DE453866C (en) Device to prevent backflow in sewing machines
AT372024B (en) TENSIONING DEVICE FOR TENSIONING A CHOCOLATE ON A LIFTING TABLE
DE7712477U (en) Hydraulic saw tensioner
DE480997C (en) Thread clamp
DE546687C (en) Scoring knife box for wood wool machines
DE1953094A1 (en) Safety device for continuous casting plants and methods for actuating the same
DE732261C (en) Boot jack
DE185904C (en)
DE468834C (en) Clamping device for work pieces, especially for clamping drums of comb cutting machines