WO2004055388A1 - Hydraulic tilting device for tilting the cab of a vehicle - Google Patents
Hydraulic tilting device for tilting the cab of a vehicle Download PDFInfo
- Publication number
- WO2004055388A1 WO2004055388A1 PCT/NL2003/000859 NL0300859W WO2004055388A1 WO 2004055388 A1 WO2004055388 A1 WO 2004055388A1 NL 0300859 W NL0300859 W NL 0300859W WO 2004055388 A1 WO2004055388 A1 WO 2004055388A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- shut
- outlet
- switching element
- hydraulic
- passage
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D33/00—Superstructures for load-carrying vehicles
- B62D33/06—Drivers' cabs
- B62D33/063—Drivers' cabs movable from one position into at least one other position, e.g. tiltable, pivotable about a vertical axis, displaceable from one side of the vehicle to the other
- B62D33/067—Drivers' cabs movable from one position into at least one other position, e.g. tiltable, pivotable about a vertical axis, displaceable from one side of the vehicle to the other tiltable
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
- F15B13/07—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors in distinct sequence
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/16—Actuating devices; Operating means; Releasing devices actuated by fluid with a mechanism, other than pulling-or pushing-rod, between fluid motor and closure member
- F16K31/163—Actuating devices; Operating means; Releasing devices actuated by fluid with a mechanism, other than pulling-or pushing-rod, between fluid motor and closure member the fluid acting on a piston
-
- 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
- Y10T137/86389—Programmer or timer
- Y10T137/86405—Repeating cycle
- Y10T137/86413—Self-cycling
Definitions
- a first aspect of the present invention relates to a hydraulic tilting device for tilting the cab of a vehicle between a driving position, in which the vehicle can be driven normally, and a tilted position, in which, for example, maintenance can be carried out on a vehicle engine positioned beneath the cab.
- Reference numeral 100 denotes a hydraulic pump, which in this case is driven by an associated motor M.
- the pump is of the type having a pumping direction with a suction port 101, which is connected to a reservoir 102 for hydraulic fluid.
- the pump 100 also has one single delivery port 104 for delivering pressurized hydraulic fluid.
- a pressure-relief valve 103 connected to the delivery port 104 protects the system from an excessively high hydraulic pressure.
- there is a non-return valve 105 which closes in the direction of the delivery port 104.
- the dashed line contour surrounding the pump 100, motor and valve 103 indicates that these components are integrated in one structural part.
- valve 1 By suitably dimensioning the valve 1, it is possible to adjust the response of the valve 1, for example to achieve a slow reaction to the flow of fluid stopping, so that the valve 1 does not switch over immediately if the flow of fluid ceases briefly. If desired, it is also possible to create a valve 1 which reacts quickly.
- Figure 9 also shows a main switch 173, a switch 174 which is actuated in the locked position of the cab, a control lamp switch 175 and a start/stop switch 176.
- the pressure switch 172 is adjusted to a switching pressure which is higher than the normal working pressure of the hydraulic system while the cab is being tilted. However, the switching pressure is lower than the pressure which is reached if the piston rod 121 reaches one of its limit positions.
- the pump 100 should therefore be able to produce a pressure which is higher than the switching pressure, for example the switching pressure may be 350 bar. If the piston rod 121 reaches one of its limit positions, the pressure switch 175 is activated and the pump 100 is switched off.
- inlet passage 11 which, at an inlet opening 12, is connected to the inlet chamber 9.
- a first outlet passage 13 and a second outlet passage 14 are formed in the housing 2.
- the outlet passages 13, 14 are each connected to the outlet chamber 10 at an associated first and second outlet opening 15, 16, respectively.
- the openings 15, 16 are located adjacent to one another in the base 5 of the housing 2.
- a through-passage 17, which extends between the inlet chamber 9 and the outlet chamber 10, is provided centrally in the transverse wall 8 of the sliding body 6.
- the assembly 25 can adopt a first limit diagonal position (Fig. lc) and a second limit diagonal position (Fig. la) with respect to the axial axis 1 of the valve 1.
- Fig. lc first limit diagonal position
- Fig. la second limit diagonal position
- the assembly 25 on account of hydraulic fluid flowing through the through-passage 17 in the sliding body 6, adopts the first limit diagonal position, and as a result holds the ball 20 in the first position.
- the ball 20 bears in a sealing manner against the outlet opening 15 in the base 5.
- hydraulic fluid then flows from the inlet passage 9 towards the second outlet passage 14.
- the assembly 25 tilts. If the telescopic assembly 25 was in the first limit diagonal position, the tilting is directed in the direction of the second limit diagonal position.
- the switching element of the telescopic assembly 25 can engage, at diametrically opposite locations 30, 31, with the sliding body 6 so as to form a hook connection between the two components, in such a manner that in the event of the sliding body 6 being restored to the at-rest position, the assembly 25 which is in the first or second limit diagonal position tilts towards the other limit diagonal position and reaches an intermediate position (cf . Figures la, lc) .
- a second ball 32 is provided for shutting off the through-passage 17 in the sliding body 6 in the at-rest position of the sliding body 6.
- the second ball 32 is fixed to the first body 26 of the assembly 25, in such a manner that in the first and second limit diagonal positions the second ball 32 opens up the through-passage 17 and in each intermediate position of the telescopic assembly 25 shuts off the through-passage 17.
- a first and a second bypass passage 34, 35 the openings of which are connected to the outlet chamber 10 and respectively form a connection to the first and second outlet passages 13, 14 other than via the outlet openings 15, 16 thereof, are also provided in the housing 2.
- the sliding body 6 shuts off the openings of the bypass passages 34, 35, and in a position other than the actuated position the openings of the bypass passages are opened up.
- a flexible sealing ring 36 is arranged on the bottom of the annular wall 7. The function of the bypass passages 34, 35 is clearly apparent if the transition from the position shown in Figure lb to Figure lc is considered.
- bypass passages 34, 35 are connected to the outlet chamber 10. This is considerably earlier than the time at which the initially closed opening 15, 16 of the passage 13 or 14 is opened up. If the passages 13, 14 and the bypass passages 34, 35 are in communication with an unpressurized reservoir, the bypass passages 34, 35 therefore ensure that the pressure in the outlet chamber 10 drops quickly.
- the valve 40 has a telescopic assembly 41 which to a considerable degree corresponds to the assembly 25 of the valve 1.
- Figure 6 clearly shows the sliding body 6 of the valve 40 as well as the telescopic assembly 41.
- the only difference from the assembly 25 is that the ball 20 is absent in the assembly 41, whereas in the assembly 25 this ball is integral with the body 27.
- the end of the body 42 forms a recess, by means of which the assembly 41 can engage on a ball, which does not belong to the telescopic assembly 41, of the first shut-off member 50, which is yet to be described.
- the shut-off member 50 will be explained in more detail, partly with reference to Figures 7a-c.
- the shut-off member 50 is a separate component.
- the shut-off member 50 can be tilted with respect to the base 5 of the housing 2 about a tilting point 51 located between the openings of the outlet passages 13, 14 in the base 5.
- the shut-off member 50 comprises a first ball 53 and a second ball 54, which are accommodated in a common carrier 55, which carrier 55, between the balls 53, 54, is provided with a tilting projection 56, which at the tilting point 51 is tiltably supported on the base 5 of the housing 2.
- the balls 53, 54 are made from metal and the carrier 55 is made from plastic.
- the carrier 55 is provided with a positioning recess 57, into which a part of the housing 2 (not shown) fits, so that the carrier 55 can tilt but cannot rotate with respect to the housing 2.
- the balls 53, 54 on one side each form the shut-off surface for an outlet opening 15, 16 and on the other side also form the engagement formation for the telescopic assembly.
- These engagement formations are located on either side of the abovementioned tilting point 51 and are formed by those parts of the surface of the balls 53, 54 which face away from the base 5.
- the assembly 40 engages on the ball 53 and presses this ball 53 onto the outlet opening 15, so that the outlet passage 13 is shut off.
- the ball 54 is located at a distance from the outlet opening 16 and the outlet passage 14 is open.
- the telescopic assembly 41 is tilted in the same way as described with reference to Figures la-d and will therefore not be explained again.
- the ball 32 which is integral with body 26, shuts off the through-passage 17 in the sliding body 6.
- a separate ring 66 which in this valve 60 serves as a first shut-off member for the outlet passages 62, 63.
- the sleeve 64 is provided, on its side facing the moveable ring 66, with diametrically opposite engagement formations 68, 69 for the telescopic assembly 70.
- the engagement formations 68, 69 lie on the same axial line as the openings of the outlet passages 63, 64.
- the engagement formations 68, 69 project inwardly with respect to the annular wall of the sleeve 64 and can form a stop for the sliding body 73 in the actuated position thereof.
- the telescopic assembly 70 is substantially identical to the above-described assembly 25, but is now positioned upside-down.
- the first body 71 is now provided with a circumferential edge 72 which can be brought into engagement with one of the engagement formations 68, 69.
- the assembly 70 is in engagement with formation 69 and is therefore being held in an intermediate position.
- the assembly 70 presses the ring 66 onto the circumferential wall of the bore at the location of the opening of outlet passage 62, which is as a result shut off.
- the assembly 70 is in its other intermediate position, in which the assembly 70 is in engagement with the formation 68, which is stationary with respect to the housing 61.
- the assembly 70 is in its other limit diagonal position, in which the assembly 70 presses the ring 66 onto the circumferential wall of the bore at the location of the opening of the outlet passage 63, so that this opening is shut off.
- the ball 32 serves as a guide member and slides along the base of the housing 61.
- the ball 20, which in this case slides along the sliding member 73, has the same function.
- In the intermediate position of the assembly 70 there is no sealing of the through-passage 17 in the sliding body 73, as is the case in - ⁇ - the valves which have been discussed above.
- valve 80 shown in Figures 4a-d corresponds to a considerable degree to the valve 1 shown in Figures la-d. For this reason, corresponding components are provided with the same reference numerals and reference is made to the earlier explanation for a description of the way in which they operate.
- a particular feature of the valve 80 is its design in the region of the connection of the outlet passages 13, 14 to the outlet chamber 10.
- a flexible disc 81 which bears against the base 5, is arranged on the base 5 of the housing 2. At its circumferential edge, the disc 81 is clamped into the housing 2. Openings are arranged in the disc 81 at the position of each of the outlet passages 13, 14.
- a sleeve 83, 84 in which there is a ball 85, 86 is arranged in these openings in such a manner that the balls 85, 86 act as non-return valves which close in the direction of the outlet chamber 10.
- the disc 81 In the at-rest position of the sliding body 6, i.e. when no pressurized hydraulic fluid is being supplied to the inlet passage 11, it may be desirable for an excessively high pressure not to remain or form in one of the outlet passages 13, 14.
- the non-return valves 84, 85 close off these passages 13, 14.
- the disc 81 adopts a convex position, so that in the region between the outlet openings, formed in the base 5, of the outlet passages 13, 14 and the underside of the disc 81 a connection is formed, along which this excess pressure can escape to the other outlet passage.
- the disc 81 forms an elastic pressure-relief valve between the outlet passages 13, 14, which valve is then actuated by the assembly 25 in such a manner that the pressure relief connection is closed when the sliding body 6 is in the actuated position.
- the valve 200 shown in Figure 5 is a variant on the valve 60 shown in Figure 3. Since the operation of the valve according to the invention has already been explained a number of times, in this case it will be sufficient just to describe Figure 5.
- the housing 201 is provided with an inlet passage 202 and with outlet passages 203, 204, which are connected to a bore in the housing 201.
- a substantially cylindrical sleeve 205 is secured in the housing 201, for example with a clamping fit.
- the sleeve 205 extends over part of the axial length of the bore.
- Sliding body 206 fits in an axially slideable manner into the bore and is provided with through-passage 207 between the inlet chamber 208 and the outlet chamber 209.
- valve 200 serves as a shut-off member for the outlet passages 203, 204.
- the annular body 211 has a smaller external diameter than the bore in the housing 201 and can therefore move inside the bore with a certain play. Furthermore, the annular body 211 is provided, on the side facing the base 210, with openings which are delimited by projections 212 and through which fluid can pass, as will be explained below.
- the sleeve 205 On its side facing the moveable ring 211, the sleeve 205 is provided with diametrically opposite engagement formations 215, 216 for a rigid switching element 220.
- the engagement formations 215, 216 lie on the same axial line as the openings of the outlet passages 203, 204.
- the engagement formations 215, 216 project inwards with respect to the annular wall 211a, so that the top edge of the annular wall 211a is guided in such a manner that it can slide around them in the axial direction with radial play.
- the rigid switching element 220 is provided with a circumferential edge 221, which can be brought into engagement with one of the engagement formations 215, 216. It can be seen from Figure 5 that the switching element 220 is in engagement with formation 216. In this case, the sliding body 206 is in its actuated position, because there is a flow of fluid through the through-passage 207. In Figure 5, the switching element 220 presses the annular body 211 onto the circumferential wall of the bore at the location of the opening of the outlet passage 204, which is shut off as a result.
- a spring 230 is positioned between the base 210 and the annular body 211 and presses the said annular body 211 in the direction of the switching element 220.
- the annular body 211 can therefore slide in the axial direction with respect to the housing 201.
- a bottom part 233 has a smaller diameter than a top part 234.
- liquid can flow towards an outlet passage 203, 204 as soon as the gap between the bottom part 233 and the wall of the bore in the housing 201 comes into communication with the said outlet passage.
- Openings 232 for the flow of fluid through the valve 200 are also arranged in the base wall 211b.
- the annular body 211, in particular the annular wall 211a to be flexible.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Multiple-Way Valves (AREA)
- Fluid-Pressure Circuits (AREA)
- Forklifts And Lifting Vehicles (AREA)
- Servomotors (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004560708A JP2006509983A (en) | 2002-12-13 | 2003-12-04 | Hydraulic tilting device for vehicle cab and valve for the tilting device |
AU2003289677A AU2003289677A1 (en) | 2002-12-13 | 2003-12-04 | Hydraulic tilting device for tilting the cab of a vehicle |
US10/538,340 US7252029B2 (en) | 2002-12-13 | 2003-12-04 | Hydraulic tilting device for tilting the cab of a vehicle |
EP03779052A EP1570183B1 (en) | 2002-12-13 | 2003-12-04 | Hydraulic tilting device for tilting the cab of a vehicle |
DE2003614773 DE60314773T2 (en) | 2002-12-13 | 2003-12-04 | HYDRAULIC TIPPING DEVICE FOR TIPPING THE DRIVER'S HOUSING OF A VEHICLE |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL1022163 | 2002-12-13 | ||
NL1022163A NL1022163C2 (en) | 2002-12-13 | 2002-12-13 | Hydraulic valve. |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004055388A1 true WO2004055388A1 (en) | 2004-07-01 |
Family
ID=32589148
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/NL2003/000859 WO2004055388A1 (en) | 2002-12-13 | 2003-12-04 | Hydraulic tilting device for tilting the cab of a vehicle |
Country Status (10)
Country | Link |
---|---|
US (1) | US7252029B2 (en) |
EP (1) | EP1570183B1 (en) |
JP (1) | JP2006509983A (en) |
KR (1) | KR20050085637A (en) |
CN (1) | CN1308598C (en) |
AT (1) | ATE366371T1 (en) |
AU (1) | AU2003289677A1 (en) |
DE (1) | DE60314773T2 (en) |
NL (1) | NL1022163C2 (en) |
WO (1) | WO2004055388A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL1029030C2 (en) * | 2005-05-12 | 2006-11-14 | Actuant Corp | Hydraulic system. |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106337846B (en) * | 2016-10-12 | 2018-08-17 | 中南大学 | The pile press machine clip pile hydraulic system and control method and clip pile sequence control valve of achievable sequence clip pile |
CN110410376B (en) * | 2019-06-25 | 2021-02-12 | 浙江科力车辆控制系统有限公司 | Integrated electric control reversing oil pump |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3985194A (en) | 1974-08-30 | 1976-10-12 | Applied Power Inc. | Tilt cab power stream and valve control therefor |
US4029119A (en) * | 1975-04-30 | 1977-06-14 | Hal Klieves | Valve and valve system |
US5022426A (en) * | 1990-07-05 | 1991-06-11 | Fischer Andrew P | Pressure operated sequencing valve |
FR2743047A1 (en) * | 1995-12-27 | 1997-07-04 | Renault Vehicules Ind | Tipping mechanism for goods vehicle cab |
EP1088509A1 (en) * | 1999-10-01 | 2001-04-04 | BSH Bosch und Siemens Hausgeräte GmbH | Household dishwasher |
US20020046834A1 (en) * | 2000-10-20 | 2002-04-25 | Rayssiguier Christophe M. | Hydraulic actuator |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4561343A (en) * | 1981-08-27 | 1985-12-31 | Jobst Institute, Inc. | Sequencing valve mechanism |
-
2002
- 2002-12-13 NL NL1022163A patent/NL1022163C2/en not_active IP Right Cessation
-
2003
- 2003-12-04 JP JP2004560708A patent/JP2006509983A/en active Pending
- 2003-12-04 CN CNB2003801016929A patent/CN1308598C/en not_active Expired - Fee Related
- 2003-12-04 US US10/538,340 patent/US7252029B2/en not_active Expired - Fee Related
- 2003-12-04 KR KR1020057010837A patent/KR20050085637A/en not_active Application Discontinuation
- 2003-12-04 DE DE2003614773 patent/DE60314773T2/en not_active Expired - Fee Related
- 2003-12-04 WO PCT/NL2003/000859 patent/WO2004055388A1/en active IP Right Grant
- 2003-12-04 EP EP03779052A patent/EP1570183B1/en not_active Expired - Lifetime
- 2003-12-04 AT AT03779052T patent/ATE366371T1/en not_active IP Right Cessation
- 2003-12-04 AU AU2003289677A patent/AU2003289677A1/en not_active Abandoned
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3985194A (en) | 1974-08-30 | 1976-10-12 | Applied Power Inc. | Tilt cab power stream and valve control therefor |
US4029119A (en) * | 1975-04-30 | 1977-06-14 | Hal Klieves | Valve and valve system |
US5022426A (en) * | 1990-07-05 | 1991-06-11 | Fischer Andrew P | Pressure operated sequencing valve |
FR2743047A1 (en) * | 1995-12-27 | 1997-07-04 | Renault Vehicules Ind | Tipping mechanism for goods vehicle cab |
EP1088509A1 (en) * | 1999-10-01 | 2001-04-04 | BSH Bosch und Siemens Hausgeräte GmbH | Household dishwasher |
US20020046834A1 (en) * | 2000-10-20 | 2002-04-25 | Rayssiguier Christophe M. | Hydraulic actuator |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL1029030C2 (en) * | 2005-05-12 | 2006-11-14 | Actuant Corp | Hydraulic system. |
WO2006121325A1 (en) * | 2005-05-12 | 2006-11-16 | Actuant Corporation | A hydraulic system |
Also Published As
Publication number | Publication date |
---|---|
DE60314773D1 (en) | 2007-08-16 |
EP1570183A1 (en) | 2005-09-07 |
US20060117943A1 (en) | 2006-06-08 |
NL1022163C2 (en) | 2004-07-09 |
DE60314773T2 (en) | 2008-05-15 |
KR20050085637A (en) | 2005-08-29 |
AU2003289677A1 (en) | 2004-07-09 |
CN1705828A (en) | 2005-12-07 |
JP2006509983A (en) | 2006-03-23 |
ATE366371T1 (en) | 2007-07-15 |
CN1308598C (en) | 2007-04-04 |
EP1570183B1 (en) | 2007-07-04 |
US7252029B2 (en) | 2007-08-07 |
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