US3583159A - Hydraulic control devices - Google Patents

Hydraulic control devices Download PDF

Info

Publication number
US3583159A
US3583159A US704600A US3583159DA US3583159A US 3583159 A US3583159 A US 3583159A US 704600 A US704600 A US 704600A US 3583159D A US3583159D A US 3583159DA US 3583159 A US3583159 A US 3583159A
Authority
US
United States
Prior art keywords
emitter
piston
casing
jacks
oil
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 - Lifetime
Application number
US704600A
Other languages
English (en)
Inventor
Jean Paulet
Jean Mori
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.)
Bennes Marrel SA
Original Assignee
Bennes Marrel SA
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 Bennes Marrel SA filed Critical Bennes Marrel SA
Application granted granted Critical
Publication of US3583159A publication Critical patent/US3583159A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • F15B7/00—Systems in which the movement produced is definitely related to the output of a volumetric pump; Telemotors
    • F15B7/005—With rotary or crank input

Definitions

  • Each cylinder has two pipes, one at each end, the pipes leading to a remote double-acting receiver.
  • Each piston has a valve so that each cylinder is constantly full of oil.
  • SHEET 3 BF 4 HYDRAULIC CONTROL DEVICES The present invention concerns improvements in or relating to double-acting remote-control devices which are used in various hydraulic circuits, particularly in machine tools, automotive vehicles or public works appliances.
  • Such a remote-control hydraulic device is known.
  • the principal object of the present invention is to provide a device with improvements concerning the method of constructing the various members and in particular, to enable them to be mounted very compactly. It is known that on certain public works appliances it is necessary to provide a considerably number of remote controls (for example 6, 8 or even more), the operating levers of which have to be located in an outer cabin and actuated by only one person.
  • the object of the present invention is to achieve this result by constructing the control in the form of a compact control apparatus capable of actuating a remote receiver and a distributor located at any point away from the control where there is sufficient space available.
  • the invention makes it possible to assemble several controls in only one housing, a feature which further saves space in the cabin and makes it possible to operate several controls from a single lever.
  • the operation of the appliance is therefore facilitated since the systems of conventional design, in which a lever is necessary for effecting every basic operation, the operator could control simultaneously only two operations at the most, with a lever in each hand.
  • a remote-control hydraulic device is mainly characterized in the feature that the two control or emitter valves or jacks are mounted side by side within a common casing filled with oil, the push members thereof being located opposite a common cam keyed on a rotating shaft connected to a control lever disposed externally of the housing and manually operated, only two hydraulic tubes being provided, one on each emitterjaek, to connect the aforementioned housing with a receiving unit mounted at a distance and assembling the actual hydraulic receiver and a distributor slide valve, which causes the desired switching of the hydraulic power circuits.
  • several pairs of emitterjacks are assembled in a common control casing, each emitter being controlled by the swinging ofa cam.
  • cams located side by side, are triggered externally by a single control lever provided with a selector system making it possible to connect it to either of the cams or several of them.
  • control movement is then similar to that of a gear box lever with an operating grid in the shape of a double-H, for example.
  • the invention makes it possible to use a single casing simultaneously functioning as an oil tank and containing therein one or more pairs of emitter jacks, so that the number of very long hydraulic pipes to the receiver is reduced to the strict minimum.
  • the number of pipes is identical with that of the emitter jacks.
  • the invention also proposes two other embodiments in accordance with which the housing constituting an oil tank is sealed or alternatively communicates with the surrounding atmosphere. Either form may be adopted according to whether the appliance or machine to be fitted makes it necessary to place the control casing under load, or 'at a level higher than that of the receiver members.
  • FIG. 1 is an overall view showing a remote control according to the invention in which the control casing constitutes an oil tank located at a level higher than that of the receiver.
  • FIG. 2 is a longitudinal section through the emitter casing in which the jacks are inoperative.
  • FIG. 3 is a similar view with the lever manually operated to press the piston of one ofthe emitter jacks.
  • FIG. 4 is a partial axial section through an inoperative emitter jack.
  • FIG. 5 is an overall view with a partial section of the distributor fitted with a spring-loaded centering system on one of its ends and a double-acting hydraulic lever on the opposite end.
  • FIG. 6 is an overall view of a remote control according to the invention in which the sealed control casing is mounted so as to be under pressure.
  • FIG. 7 is a longitudinal section through the sealed casing.
  • FIG. 8 is a longitudinal section through another embodiment of a single-acting hydraulic receiver to be mounted on each of the two ends of the distributor slide valve as a replacement of the centering system, and a double-acting receiver shown in FIG. 5.
  • FIG. 9 shows another means for mounting the same standard distributor, the control of which is effected directly by hand.
  • FIG. I0 is a side view of another embodiment of a control casing with two pairs of emitter jacks.
  • FIG. II is a section taken on the lines XI-XI (FIG. I0), showing the lever in its center position i.e. ready to actuate the two cams simultaneously.
  • FIG. 12 is a similar section showing the lever displaced to actuate only one cam.
  • FIG. 13 is a similar section showing the lever displaced in the opposite direction for actuating only the other cam.
  • FIG. 14 is a plan view of the double-H control grid provided for the operation of the lever.
  • FIG. 15 is a diagram and plan showing the two jacks which can be actuated when the lever is engaged in the branch of the double-H corresponding to FIG. 12.
  • FIG. 16 is a similar diagram showing how the lever can actuate two jaeks simultaneously, one in each pair of emitters, when it is engaged in the center branches of the double-H as shown in FIG. 11.
  • FIG. 17 is a similar diagram corresponding to FIG. 13.
  • FIG. I shows a remote-control device according to the invention comprising a control casing K and a receiver casing L. These two units are connected by two pipes 37 and 39. These pipes 37 and 39 may be several yards long which makes it possible to locate the compact casing K in a control cabin and to mount externally, at any desired position, the receiver casing L, the dimensions of which may be considerable.
  • the control casing K represents an oil tank located at a level higher than that of the receiver casing 11, as shown by the dimension 101.
  • the casing L contains a standard-type distributor D, the ends of which are fitted with control members. These members are formed by a double-acting receiver jack C and by a centering system E loaded by a return spring.
  • the invention makes it possible to use a standard distributor D which can be fitted with members C and E, as shown in FIG. 1, or two receiving jacks C, and C as shown in FIG. 6, which provides several assemblies comprising standard members to suit various applications.
  • the tank casing K is situated above the level of the receiver casing L and is therefore provided with an air intake 102 which communicates with the atmosphere above the oil level 100.
  • Disposed in the oil are two horizontal emitter jacks A and B.
  • the jack A is connected to the pipe 37, whilst the jack B is mounted on the pipe 39.
  • These two emitter jacks are constructed in a similar manner.
  • Each of them comprise a free piston 9 provided with an axial perforation 46 (FIG. 4), sliding oiltight within the corresponding cylinder 6.
  • the sliding seal is ensured by an O-ring [0.
  • a spring 13 pushes the free piston 9 against an abutment collar 103 formed on the cylinder 6 and held in position by a circlip 14.
  • the perforation 46 in the piston 9 comprises an O-ring 104 forming a seat to which the adjacent end of the plunger piston 4 may be applied.
  • the latter is enclosed by a helical return spring I05 which rests on a shoulder 106 (FIG. 2) ensuring the connection of the plunger piston 4 with a pushbutton 107 of larger diameter.
  • the pushbuttons 107 of the emitter jacks A and B slide in guide recesses 108 of the casing K.
  • the pushbuttons 107 are each provided with a ball 109 disposed opposite one of the arms 110 or 111 ofa cam 112.
  • the latter is located in oil and is keyed on a transverse shaft 113 which passes tightly through the wall of the casing K.
  • the outer end of this shaft 113 is connected to an oscillating lever 114 which the operator can displace forwardly or backwardly as shown in FIG. 2 by the arrows 115 and 116 respectively.
  • each plunger piston 4 is remote from its seat, formed by the joint 104 of the corresponding free piston 9.
  • the oil can then circulate freely between each plunger piston 4 and the ring 104 disposed oppositely thereto.
  • the distributor D may be of any known standard type. As shown it comprises a slide valve indicated by the reference numeral 117 in the embodiment shown in FIG. 9.
  • the assembly shown in FIGS. 15 comprises a rod 118 attached to one of the ends of the slide valve 117 and round which a return spring 119 is mounted. This spring is compressed between a thrust washer 120 which is held by an enlarged head 121 of the rod 118 and collar 122 disposed around the rod 118 to bear on a shoulder 123 which ensures the connection with the slide valve 117. In the resting condition, the washer 120 abuts a boss 124 provided in the casing of the centering system E. However, the periphery of the collar is able to bear on a lixed shoulder 125 of the distributor body D. Under these conditions, it is apparent that the slide valve 117 can slide in either direction, causing each time the compression of the spring 119, the latter returning it automatically to the central inoperative position as soon as it is no longer actuated.
  • the receiver C is mounted on the opposite end of the distributor D.
  • the slide valve 117 is provided with a slide rod 126 which is connected to a center piston 127: the latter slides oiltight within a fixed cylinder 128 which it separates into two chambers 129 and 130.
  • the chamber 129 is connected to the pipe 37: the pipe 39 communicates with the chamber 130.
  • a remote control device functioning as a closed circuit, in which two pipes only, 37 and 39, ensure the connection between the control casing K and the receiver casing L which may be several yards away.
  • FIGS. 68 shown another embodiment in which, for reasons of space, it is necessary to mount the tank K under pressure. For this purpose it is only necessary to remove the cover 133 shown in FIGS. 2 and 3 and to replace it by a sealed cover 134 provided with a deformable diaphragm 135 which defines a cushion 136 of compressed gas. The air intake 102 shown in FIG. 2 is omitted. Finally, an internally sealed tank K (FIGS. 6 and 7) is obtained, within which the variations in the volume of oil 100, resulting for example from temperature changes, are absorbed by deformations of the diaphragm 135 'and the gas cushion 136. Inflation thereof with nitrogen or an inert gas is effected from outside by way of a socket provided with a valve 137.
  • FIGS. 68 it is also assumed that the control of the slide valve 117 of the distributor D is ensured by two receiver jacks C, and C mounted at each end opposed to each other.
  • the jack C receives oil fed through the emitterjack B by way of the pipe 39 and the receiver jack C is connected to the emitter jack A by the pipe 37.
  • the receiving jacks C, and C are identical and therefore it is only necessary to describe one of them shown in FIG. 8.
  • This jack comprises a hollow piston 138 formed by a cylindrical sleeve separated into two chambers 140 and 141 by a partition 139. The periphery of this piston slides oiltight within a fixed cylinder 142. The seal is ensured by a sliding O-ring 143.
  • the chamber 140 surrounds the standard threaded end 144 of the slide valve 117 without it being necessary to ensure a rigid connection with the piston 138.
  • the opposing chamber 141 contains a return spring 145 which bears against the end of the cylinder 142. This spring keeps the piston 138 applied against the end shoulder 123 of the slide valve 117.
  • the pipe 37 terminates at the end of the cylinder 142, that is to say, it is capable of feeding oil to the chamber 141.
  • a bleed cock 146 is mounted in the cylinder 142.
  • the receiving jacks C, and C are connected oppositely to each other on the slide valve 117, it will be understood that they cause displacement of this slide valve in one direction or the other, depending on whether the push rod 107 of one or other of the emitterjacks A and B is depressed. For this purpose, it is only necessary to swing the lever 114 forward or backward.
  • two pairs of emitter jacks A,, B, and A B are provided.
  • the jacks A,, B, actuate, as above, one distributor (not shown) and the emitter jacks A and B operate another.
  • the control of two different movements may be obtained from only one lever 147 arranged in a manner which will be described hereinafter.
  • the operator can then perform two different operations by one hand only, either simultaneously or independently of each other.
  • the cam 112 of the emitterjacks A,B is keyed on the rocker shaft 148 provided with a control plate 149.
  • the cam 112 which acts on the pushbuttons of the emitter jacks A B is keyed on a rocker shaft 150 provided with a control plate 149.
  • the cam 112 which acts on the pushbutton of the emitter jacks A B is keyed on a rocker shaft 150 provided with a control plate 151.
  • the two shafts 148 and 150 are independent of each other, but in alignment.
  • the plates 149 and 151 are disposed in parallel and in each case comprise a square opening indicated by 152 in the first case and 153 in the second.
  • a portion of square shaft 154 is also arranged to slide transversely and with very little play in the openings 152 and 153.
  • the square rod 154 is connected to the lever 147, the swinging of which about the geometrical axis common to the axes 148 and 150 is guided by a transverse rod 155 engaged in two grooves 156 shaped like an arc of a circle formed in the wall of the casing.
  • lever 147 passes through the casing M by way of a gate formed by a wall 157 in which an opening 158 is passed in the form of a double-H.
  • This opening 158 comprises two center branches 159-160, two upper branches 161162 and two lower branches 163- 164..
  • the length of the square rod 154 is somewhat greater than the space between the plates 149 and 151, a feature which enables the rod 154 to be engaged at one and the same time in the two openings 152 and 153 when the lever 147 occupies the middle position corresponding to the branches 159 and of the gate.
  • the operator may begin by raising the lever 147 in-the direction of the arrow 167 (FIG. 13).
  • the square rod 154 remains in engagement with the plate 149, whilst it frees the opening 153 in the plate 151. It is thus possible to operate either on the emitterjack A (branch 163 of the gate, upper portion of part 17), or on the emitterjack B (branch 164 of the grid: lower portion of FIG. 17).
  • a remote hydraulic control device comprising at least two pair of emitter jacks; an oil-filled casing with each pair of emitter jacks mounted in a side by side relationship within said casing; a pushrod operatively connected to each jack in said casing; a cam means including cams keyed on rotatable shafts for exerting force on each pushrod; a control means operatively connected with said casing for actuating said emitter jacks including a reference plate for each cam and a rod engageable with each reference plate; guide means for controlling the actuation of said rod with one or more of said reference plates to permit the operation of one or more than one emitter jack at a single operation of said control means; and a hydraulic receiver means including hydraulic receiver units operatively connected with each emitter jack by fluid conduits to hydraulically control said hydraulic receiver means.
  • a hydraulic control device as recited in claim 1 further including a hand lever where said reference plates include a square opening and said rod is square-shaped, the hand lever connected to said square rod.
  • each emitter jack comprises a free piston defining an axial perforation, a fixed cylinder in which said piston slides oil-tight, a spring urging said piston against a thrust collar of said cylinder, an annular seal around one end of the perforation of said piston, a plunger piston connected to one of said push rods and a return spring for said piston which is located so as to cooperate with said annular seal.
US704600A 1967-10-09 1968-02-12 Hydraulic control devices Expired - Lifetime US3583159A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR69049196 1967-10-09

Publications (1)

Publication Number Publication Date
US3583159A true US3583159A (en) 1971-06-08

Family

ID=9694824

Family Applications (1)

Application Number Title Priority Date Filing Date
US704600A Expired - Lifetime US3583159A (en) 1967-10-09 1968-02-12 Hydraulic control devices

Country Status (4)

Country Link
US (1) US3583159A (de)
DE (1) DE1750225C3 (de)
GB (1) GB1213671A (de)
SE (1) SE342075B (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3944013A (en) * 1974-10-15 1976-03-16 Lapointe Roger F Remote shift
US3977192A (en) * 1972-10-18 1976-08-31 Igor Nikolaevich Smirnov Hydraulic drive pulsator of reciprocating action
US3991845A (en) * 1974-10-15 1976-11-16 Lapointe Roger F Remote shift
US4785615A (en) * 1983-11-28 1988-11-22 Leigh Monstevens Keith V Hydraulic shift for motor vehicle automatic transmission
WO2006096065A1 (en) * 2005-03-08 2006-09-14 Kongsberg Automotive As System for shifting gear with double-acting cylinders

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2817057C2 (de) * 1978-04-19 1984-07-26 Fritzmeier AG, 5600 Lenzburg Hydraulisches Wegeventil mit hydraulischer Servobetätigung
DE3837307C1 (de) * 1988-11-03 1989-11-09 Albert Schulte Soehne Gmbh & Co, 5632 Wermelskirchen, De

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2352344A (en) * 1940-12-07 1944-06-27 Edward A Rockwell Hydraulic travel modulation control
US3182456A (en) * 1963-05-09 1965-05-11 Ingersoll Rand Co Remote control mechanism
US3340897A (en) * 1965-05-07 1967-09-12 Ohio Brass Co Fluid control mechanism

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2352344A (en) * 1940-12-07 1944-06-27 Edward A Rockwell Hydraulic travel modulation control
US3182456A (en) * 1963-05-09 1965-05-11 Ingersoll Rand Co Remote control mechanism
US3340897A (en) * 1965-05-07 1967-09-12 Ohio Brass Co Fluid control mechanism

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3977192A (en) * 1972-10-18 1976-08-31 Igor Nikolaevich Smirnov Hydraulic drive pulsator of reciprocating action
US3944013A (en) * 1974-10-15 1976-03-16 Lapointe Roger F Remote shift
US3991845A (en) * 1974-10-15 1976-11-16 Lapointe Roger F Remote shift
US4785615A (en) * 1983-11-28 1988-11-22 Leigh Monstevens Keith V Hydraulic shift for motor vehicle automatic transmission
WO2006096065A1 (en) * 2005-03-08 2006-09-14 Kongsberg Automotive As System for shifting gear with double-acting cylinders

Also Published As

Publication number Publication date
GB1213671A (en) 1970-11-25
SE342075B (de) 1972-01-24
DE1750225C3 (de) 1980-01-03
DE1750225B2 (de) 1979-04-26
DE1750225A1 (de) 1970-10-01

Similar Documents

Publication Publication Date Title
US2848014A (en) Detent mechanism for hydraulic control valves
US2075917A (en) Control mechanism
US3797525A (en) Pilot valve
US3583159A (en) Hydraulic control devices
US3229721A (en) Pneumatic valve construction
US2725077A (en) Hydraulic slide valve
GB2024965A (en) Apparatus for power-assisted gear changing in mechanical gearboxes
EP0803651A1 (de) Druckgesteuerte Betätigungseinrichtung
US3470759A (en) Power-assisted change-speed devices
US3152520A (en) Three position actuator
US2137959A (en) Gear shifting mechanism
US3595271A (en) Directional flow control valve with float and check valve structure
US2961001A (en) Pilot controlled valve
US3776099A (en) Automatic release and centering device
CN106795899B (zh) 三位缸和用于控制三位缸的方法
US2820372A (en) Control valve for fluid pressure remote control systems
US3033512A (en) Poppet valve
US2851997A (en) Multi-stage hydraulic amplifier valve
EP0365033A1 (de) Hydraulische Betätigungsvorrichtung, bestimmt für die Steuerung der Gangwahl-und Gangschaltvorgänge eines mechanischen Getriebes für Kraftfahrzeuge
US2939283A (en) Self-contained power actuator
US3114296A (en) Linear actuator
GB1336877A (en) Gear shifting arrangement for speed-change gearboxes
US3352324A (en) Control valve structure and linkage therefor
US5295429A (en) Pressurized fluid directional flow control valve assembly
US2926539A (en) Power shifting mechanism