WO1997027995A1 - Sistema hidraulico para el control de frenos, embragues y frenos-embragues - Google Patents
Sistema hidraulico para el control de frenos, embragues y frenos-embragues Download PDFInfo
- Publication number
- WO1997027995A1 WO1997027995A1 PCT/ES1997/000018 ES9700018W WO9727995A1 WO 1997027995 A1 WO1997027995 A1 WO 1997027995A1 ES 9700018 W ES9700018 W ES 9700018W WO 9727995 A1 WO9727995 A1 WO 9727995A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- clutches
- brakes
- clutch
- brake
- valve
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/14—Control arrangements for mechanically-driven presses
- B30B15/142—Control arrangements for mechanically-driven presses controlling the brake or the clutch
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/87169—Supply and exhaust
- Y10T137/87233—Biased exhaust valve
- Y10T137/87241—Biased closed
Definitions
- the invention relates to a hydraulic system applicable in the control of brakes, clutches and brakes-clutches, used to drive presses and similar machines, to achieve damping of the clutch and / or braking for a pre-established time and without slowing down much. said clutch and / or braking operations.
- the system in addition to controlling the damping of the clutch and / or braking, acts as a safety means to avoid any risk of the operator who feeds the machine itself, based on the safety means on valves that are controlled in their positioning by means of a pressure switch provided at the end of a labyrinth conduit arranged between the pressure tap and the pressure switch itself.
- solenoid valves are used, which can be direct acting or piloted (servo-controlled), so that the former are used when it comes to controlling relatively small flow rates, while the latter are used when it comes to of high flows.
- piloted valves are normally used, due to the need to obtain high response speeds that require a rapid evacuation of the volume of oil displaced by the drive pistons.
- the brakes and brakes-clutches used to drive this type of machines are complemented by double solenoid valves, which are mounted so that simultaneous operation of both is required to get the machine started, one of those solenoid valves must be sufficient to cause the machine to stop, thus offering double stop safety.
- the brakes, clutches and brakes - hydraulic clutches for actuating presses and similar machines are also equipped with damping systems for the clutch and / or braking, in order to avoid sudden maneuvering of the machine that can cause breakdowns in the same, for which one uses, among others, a system consisting of providing the clutch thrust piston with a disc pushed by a series of auxiliary springs that give less force than the produced by the piston itself, and with limited displacement.
- auxiliary springs of lesser force than normal braking springs, all in such a way that the auxiliary springs push a disc, well located on the clutch side, well located on the brake side, a disc that faces, in each case, a package of sheets, which in one case will be the clutch plates, and in another case the brake sheets, the disc being pushed in each case, according with the operation of the main piston, against the corresponding sheet package, in order to cause the clutch and / or soft braking.
- the soft braking system can be canceled at any given time, in order that the machine can be stopped in an emergency, such as in those cases in which the manipulator is find in a danger zone and where it is required a quick reaction of the machine without compromise to its integrity.
- the system that is recommended is designed to be able to regulate the clutch and / or soft braking on the one hand, and on the other hand to be able to cancel the retarding effect of the braking regulation system itself so that the machine is provided with maximum safety With a quick braking.
- the hydraulic system itself comprises a pair of pressure opening and closing valves, for controlling the passage of oil at the inlet to the brake-clutch and for controlling the output circuit of the brake-clutch to the tank respectively.
- a servo-commanded emergency valve that must remain open as long as the machine does not exceed a certain position or danger zone
- two servo-controlled or piloted safety valves which, like the emergency one, are hydraulically connected and associated to a control device, which controls at all times the positioning of said valves, based on a pressure switch located at the end of an auxiliary labyrinth conduit that communicates the inlet or pressure outlet with the pressure switch itself.
- the opening and closing valve of the inlet oil is provided with an opening control spring and a closing control piston, the latter connected with the oil inlet to the brake-clutch, being the force, in hydraulic terms, of the opening control spring greater than the force of the normal main braking antagonist spring, and less than the sum of the force of this main braking spring normal and that of the auxiliary springs that push the corresponding disc against the clutch blade package, all in such a way that the corresponding opening and closing valve will remain open while only the normal main braking spring acts, closing when the antagonistic force corresponds to the sum of that normal main braking spring and that of the auxiliary springs.
- the valve of opening and closing of the output oil of the brake-clutch to the tank has a closing spring that, in hydraulic terms, has a force less than that of the main springs of normal braking and greater than the difference between the force of these and that of the auxiliary springs that push the corresponding disc against the brake blade package.
- Figure 1. Shows a sectional view of a brake-clutch assembly with the corresponding means conventionally used to achieve the regulation of both the soft clutch and the soft braking, figure that will also allow to understand the operation of the object hydraulic system of the invention.
- Figure 2. Shows a sectional view of the valve assembly that constitutes the hydraulic system of the invention, showing the different components to except for the pilot solenoid valves that are located in an upper plane of the plate shown in section in said figure, in which the safety valves also appear closing the passage towards the exit.
- FIG. 3 Shows the same section of the previous figure, with the safety valves in the position that allows the passage of the fluid to the outlet.
- a conventional brake-clutch can be observed for driving presses and similar machines, the corresponding main piston (1) comprising the clutch thrust (2), counting on the side of the latter with a disc (3) pushed by a series of springs (4) that give a force less than that produced by the piston itself (1), and with limited displacement.
- the corresponding main piston (1) comprising the clutch thrust (2), counting on the side of the latter with a disc (3) pushed by a series of springs (4) that give a force less than that produced by the piston itself (1), and with limited displacement.
- the corresponding main piston (1) comprising the clutch thrust (2), counting on the side of the latter with a disc (3) pushed by a series of springs (4) that give a force less than that produced by the piston itself (1), and with limited displacement.
- the corresponding main brake spring (8) there is a disk (6) pushed by springs (7) of less force than the corresponding main brake spring (8), pushing these to the main piston (1).
- a cylinder (9) will produce the clutch force, in addition to the force of the normal braking spring (8).
- the springs (4) which are of reduced force, push the disc (3) to the stop (10), causing the soft clutch since the main piston (1) pushes the disc (3) against the sheet package (11) ) until the main piston (1) touches the disc (3), at which point the clutch will be with full force given by the cylinder (9).
- the hydraulic system of regulation and drive includes a plate (13) where all the components of the hydraulic system itself are mounted, with the exception of the corresponding pilot solenoid valves that are located in the upper plane of such a plate (13) and that will be hydraulically connected so that they receive oil under pressure from the inlet (14) , so that before an electrical connection signal communicate that input with the bottom (15) of the valves (16), (17) and (18), respectively. In turn, before another electrical disconnection signal, the respective bottoms (15) of said valves will be communicated with the outlet (19), which will correspond to the input of the corresponding fluid tank.
- the antagonistic force will be that of the springs (4) and (8), and therefore the pressure in the system will rise causing the valve to move ( 20) until the passage (26) is closed, forcing the oil to pass through low flow through the narrow passage (27), said flow being controlled by a regulator (28), thus controlling the duration of the soft clutch, which does not it is other than the displacement time of the piston (1) of figure 1, until it touches the disc (3), thus fulfilling the regulation characteristic of the soft clutch.
- the springs (7) reduce the force of the springs (8) and the hydraulic pressure in the system drops, causing the valve (21) to close the passage (31), forcing the oil to pass at low flow through the narrow passage (32), controlled by a braking regulator (33), thus being able to set at will the duration of the soft braking time, which is none other than the duration of the approach of piston (1) to the disc (6), thus fulfilling the characteristic of smooth braking regulation.
- valve (18) is opened in the same manner as the valves (16) and (17), a wide passage (30) of oil to the outlet (19) will be determined, resulting in a rapid displacement of the main piston ( 1) towards the side of the brake (5) and also a very fast approach of said piston (1) to the disc (6) and a braking in the shortest time, thus achieving an emergency braking.
- the oil that enters through the inlet (14) will find the free passage to the end of the labyrinth conduit (35), leading to the activation of the pressure switch (34) provided at said outlet or end of such conduit (35), signal that will be processed to allow the start of a new maneuver, since it will indicate that the valves (16), (17) and (18) are in the correct position.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
- Control Of Presses (AREA)
- Control Of Transmission Device (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
- Non-Deflectable Wheels, Steering Of Trailers, Or Other Steering (AREA)
- Regulating Braking Force (AREA)
- Braking Systems And Boosters (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR9702087A BR9702087A (pt) | 1996-02-02 | 1997-01-30 | Sistema hidráulico para controlar freios, embreagens e freio-embreagens |
EP97901630A EP0829342B1 (en) | 1996-02-02 | 1997-01-30 | Hydraulic system for controlling brakes, clutches and brakes-clutches |
DE1997606109 DE69706109T2 (de) | 1996-02-02 | 1997-01-30 | Hydraulisches system zum controllieren von bremsen, kupplungen und bremskupplungen |
JP52732397A JP4005136B2 (ja) | 1996-02-02 | 1997-01-30 | ブレーキとクラッチとブレーキクラッチを制御するための流体装置 |
US08/930,412 US5992591A (en) | 1996-02-02 | 1997-01-30 | Hydraulic system for controlling brakes, clutches and brake-clutches |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ESP9600251 | 1996-02-02 | ||
ES9600251A ES2128920B1 (es) | 1996-02-02 | 1996-02-02 | Sistema hidraulico para el control de frenos, embragues y frenos-embragues. |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997027995A1 true WO1997027995A1 (es) | 1997-08-07 |
Family
ID=8293674
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/ES1997/000018 WO1997027995A1 (es) | 1996-02-02 | 1997-01-30 | Sistema hidraulico para el control de frenos, embragues y frenos-embragues |
Country Status (7)
Country | Link |
---|---|
US (1) | US5992591A (es) |
EP (1) | EP0829342B1 (es) |
JP (1) | JP4005136B2 (es) |
BR (1) | BR9702087A (es) |
DE (1) | DE69706109T2 (es) |
ES (1) | ES2128920B1 (es) |
WO (1) | WO1997027995A1 (es) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2267653T3 (es) * | 2000-12-02 | 2007-03-16 | Bosch Rexroth Ag | Mando hidraulico para una combinacion de freno-embrague accionado hidraulicamente, especialmente en el arbol de excentrica de una prensa mecanica. |
US10233951B2 (en) | 2016-10-05 | 2019-03-19 | Caterpillar Inc. | Method to detect uncommanded spool valve positioning and stop fluid flow to hydraulic actuators |
KR101760364B1 (ko) * | 2016-11-28 | 2017-07-24 | 주식회사 힘쎈프레스 | 프레스의 습식 클러치 브레이크 유니트 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3670767A (en) * | 1971-03-08 | 1972-06-20 | Danly Machine Corp | Safety valve assembly for controlling clutch and brake in power press or the like |
DE2935702A1 (de) * | 1979-09-04 | 1981-03-12 | Herion-Werke Kg, 7012 Fellbach | Schaltungsanordnung. |
US4261450A (en) * | 1977-11-10 | 1981-04-14 | Kabushiki Kaisha Komatsu Seisakusho | Failure detecting apparatus for a dual valve |
DE3230056A1 (de) * | 1982-08-12 | 1984-02-16 | Herion-Werke Kg, 7012 Fellbach | Sicherheitssteuerung |
US4542767A (en) * | 1983-04-05 | 1985-09-24 | Ross Operating Valve Company | Monitor for double safety valves |
DE4407943A1 (de) * | 1994-02-07 | 1995-08-10 | Coop Goizper S | Verbesserungen bei hydraulischen Bremsenkupplungen |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE756472A (fr) * | 1969-09-23 | 1971-03-01 | Bosch Gmbh Robert | Dispositif de commande electrohydraulique |
US4111071A (en) * | 1974-09-06 | 1978-09-05 | Caterpillar Tractor Co. | Modulating relief valve with hydraulic safety |
US4570677A (en) * | 1983-03-31 | 1986-02-18 | Paratech Incorporated | Unitary multiple control valve assembly |
US4620568A (en) * | 1985-10-09 | 1986-11-04 | Sumerford Harold A | Vehicle off road fuel use indicator |
DE4100672C1 (es) * | 1991-01-11 | 1992-02-20 | Mannesmann Rexroth Gmbh, 8770 Lohr, De | |
US5535865A (en) * | 1994-08-22 | 1996-07-16 | General Motors Corporation | Torque transmitting friction device and control |
-
1996
- 1996-02-02 ES ES9600251A patent/ES2128920B1/es not_active Expired - Fee Related
-
1997
- 1997-01-30 EP EP97901630A patent/EP0829342B1/en not_active Expired - Lifetime
- 1997-01-30 DE DE1997606109 patent/DE69706109T2/de not_active Expired - Lifetime
- 1997-01-30 JP JP52732397A patent/JP4005136B2/ja not_active Expired - Fee Related
- 1997-01-30 BR BR9702087A patent/BR9702087A/pt not_active IP Right Cessation
- 1997-01-30 WO PCT/ES1997/000018 patent/WO1997027995A1/es active IP Right Grant
- 1997-01-30 US US08/930,412 patent/US5992591A/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3670767A (en) * | 1971-03-08 | 1972-06-20 | Danly Machine Corp | Safety valve assembly for controlling clutch and brake in power press or the like |
US4261450A (en) * | 1977-11-10 | 1981-04-14 | Kabushiki Kaisha Komatsu Seisakusho | Failure detecting apparatus for a dual valve |
DE2935702A1 (de) * | 1979-09-04 | 1981-03-12 | Herion-Werke Kg, 7012 Fellbach | Schaltungsanordnung. |
DE3230056A1 (de) * | 1982-08-12 | 1984-02-16 | Herion-Werke Kg, 7012 Fellbach | Sicherheitssteuerung |
US4542767A (en) * | 1983-04-05 | 1985-09-24 | Ross Operating Valve Company | Monitor for double safety valves |
DE4407943A1 (de) * | 1994-02-07 | 1995-08-10 | Coop Goizper S | Verbesserungen bei hydraulischen Bremsenkupplungen |
Also Published As
Publication number | Publication date |
---|---|
JPH11509917A (ja) | 1999-08-31 |
BR9702087A (pt) | 1999-12-28 |
US5992591A (en) | 1999-11-30 |
JP4005136B2 (ja) | 2007-11-07 |
EP0829342A1 (en) | 1998-03-18 |
DE69706109T2 (de) | 2002-06-06 |
DE69706109D1 (de) | 2001-09-20 |
ES2128920B1 (es) | 1999-12-16 |
EP0829342B1 (en) | 2001-08-16 |
ES2128920A1 (es) | 1999-05-16 |
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