WO1979000753A1 - A breaking or lifting device - Google Patents

A breaking or lifting device Download PDF

Info

Publication number
WO1979000753A1
WO1979000753A1 PCT/SE1979/000053 SE7900053W WO7900753A1 WO 1979000753 A1 WO1979000753 A1 WO 1979000753A1 SE 7900053 W SE7900053 W SE 7900053W WO 7900753 A1 WO7900753 A1 WO 7900753A1
Authority
WO
WIPO (PCT)
Prior art keywords
breaking
lifting device
gas holder
expanding member
gas
Prior art date
Application number
PCT/SE1979/000053
Other languages
French (fr)
Inventor
L Ronnfors
H Stroem
Original Assignee
Jonsereds Fabrikers Ab
L Ronnfors
H Stroem
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 Jonsereds Fabrikers Ab, L Ronnfors, H Stroem filed Critical Jonsereds Fabrikers Ab
Publication of WO1979000753A1 publication Critical patent/WO1979000753A1/en

Links

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
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/10—Characterised by the construction of the motor unit the motor being of diaphragm type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
    • B66F3/25—Constructional features
    • B66F3/35—Inflatable flexible elements, e.g. bellows

Definitions

  • the present invention refers to a breaking or lifting device incorporating an expanding member i.e. a cushion, a bladder or the like, in which -pressurized gas can be introduced.
  • an expanding member i.e. a cushion, a bladder or the like
  • Breaking or lifting devices are today used in a plurality of different working moments such as wood felling, building works and as lift jacks for cars and for building struc tures etc. Such devices are for instance described in Swedish patent specification 391.109, US patent specifications 2.609.177 and 3.822.861 etc. and all of these devices incorporate an inflatable member designed as a cushion, a bladder or the like which is connected to an inflating device e.g. a combustion engine, a compressor or a hand operated pump. Such devices however are bulky and clumsy and each one of them is intended for a specific limited work purpose. Those devices which are inflated automatically, i.e. without the requirement that a manual work must be excerted, have further- more a complex design and they are therefore expensive to manufacture. The designs hitherto known are furthermore not suited for use where the space available for breaking or lifting devices is limited and where rapid operation is required e.g. at car accidents, accidents with collapsing buildings, or in other emergency situations.
  • the purpose of the present invention is to eliminate the abovementioned drawbacks at a reasonable cost and to provide a small-dimensioned breaking or lifting device which is easy to carry and which can preferably be used by the crew in different types of emergency vehicles at breaking or lifting operations e.g. for freeing persons who have got stuck in car accidents or at other breaking or lifting operations where the space for the breaking or lifting device is limited.
  • This problem is solved thereby that the expanding member via at least one control valve is connected or connectable to a rechargeable and/or exchangeable gas holder arranged to form an integrated unit with the expanding member.
  • Figure 1 shows in an axial section a breaking or lifting device according to the invention
  • Figure 2 shows a mounting bar in a section along line A - A in figure 1
  • Figure 3 shows a modified breaking or lifting device with a preset inflation pressure
  • Figure 4 shows a further embodiment of a breaking or lifting device equipped with a rechargeable gas holder
  • Figure 5 shows a filling central for the breaking or lifting device shown in figure 4
  • Figure 6 shows another embodiment of a breaking or lifting device having a laterally mounted, rechargeable gas holder
  • Figure 7 shows an expanding membemore in detail
  • Figure 8 shows another embodiment of an expanding member and a clamping device for the gas holder
  • Figure 9 is a section along line B - B through the gas holder and the clamping device shown in figure 8.
  • an expanding member 2 which by means of bolts or screws 3 at one of its ends is fixedly mounted in a mounting bar A, which is also shown in cross-section in figure 2.
  • the internal expandable space of the expanding member 2 communicates via a tube 5 with a control valve 6 provided with a control member 11 and located in a handle-like casing 7 encasing a connecting element 8 with a bayonet joint to which is connected a knob- provided 9 gas holder 10.
  • the expanding member 2 When the breaking and lifting device shall be used the expanding member 2 is introduced in evacuated state between the parts which are to be separated, e.g. in a back cut at wood felling, whereupon the control member 11 is pushed down to a first active position. Pressurized gas thereby will pass from the gas holder 10 via the connecting element 8, the control valve 6 and the tube 5 into the expanding member 2 whereby this is expanded. The control member 11 is pushed further downwards to its second active position when the desired effect has been reached and the gas contained in the ex panding member 2 will thereby be evacuated via the outlet 12 and the breaking and lifting device can be removed from its working position.
  • FIG 3 is shown an alternative breaking or lifting device in which an exchangeable gas holder 20, provided with a screw joint 13 is connected to a support and control unit 14, in which is mounted a (not shown) pressure reduction valve which via a setting device 15 is adapted to limit i.e. to maximize the pressure to be excerted by the gas in the expanding member 2 to a desired level.
  • An operating member 16 is adapted during hand-operation to allow supply of gas under pressure to the expanding member 2 and an evacuation member 17 is adapted during manual actuation to evacuate the gas present in the expanding member 2.
  • the control unit 14 is connected to the mounting bar 4 in a manner similar to that described hereabove and it is therebv also connected to the expanding member 2.
  • the handle-shaped casing 21 is thus incorporating a rechargeable gas holder 22 provided with a filling valve 19, which is of course also equipped with a (not shown) no return valve, and a control valve 23 which communicates with the gas holder 22 and is equipped with a control member 24 .
  • the control member 24 can by manual actuation be put in two active positions (not shown), one first active position, where the control member 24 is acted upon in the direction of arrow 25, whereby gas from the gas holder is allowed to pass into the expanding member 2, and a second active position when the actuation takes place in the direction of arrow 26, whereby the gas is evacuated from the expanding member 2.
  • a compressor 27 is via a conduit 30 connected to a panel 28 equipped with a plurality of filling sockets 29, through which compressed air can be supplied to several breaking or lifting devices simultaneously.
  • FIG 6 is shown an alternative embodiment of a breaking or lifting device with a rechargeable gas holder 21.
  • the gas holder 31 is fixedly mounted perpendicularly to the handle-shaped casing 36, which is provided with a filling valve 33, a non-return valve 34 and a control valve 35.
  • the control member 37 is hereby controlling the supply and evacuation of gas to/from the expanding member 2.
  • the expanding member 2 shown in figure 7 preferably comprises a supporting base 38 made from a rigid material, which has been provided with ducts 39 and openings 40.
  • a pliable or flexible material such as a rubber compound covered with nylon cord, forms the side portions 41 , 45 of the expanding member 2, whereby mounting bars 42 , 43 delimit the expanding member 2 longitudinally.
  • Compressed air or another gas under pressure is supplied to the expanding member 2 from the gas holder 44 via the ducts 39 and the openings 40 whereby is obtained an expansion of the internal expanding member space between the mounting bars 42, 43 and the side portions 41 , 45.
  • a force mainly proportional to the pressure excerted by the compressed air or the gas will thereby be obtained perpendicularly to the side portions 41, 45 of the expanding member 2 and a breaking or lifting moment will result.
  • FIG 8 Another embodiment of an expanding member is shown in figure 8 whereby a gas holder 46 will supply gas under pressure to a bellows-formed expanding member 47, provided with two legs 48, 49, which are pivotably supported relative to each other in a pivot 58.
  • the legs 48, 49 can be provided with grooves or jags 50 intended for giving a good grip against the work surfaces.
  • An exchangeable gas holder 46 is retained in a clamping device 59 made for instance from thermoplast and it is safely retained in place via springy side elements 51, 52.
  • a quick-coupling which is supported rotatably about a shaft 53 connects the gas holder via a duct 55 and a (not shown) control valve to the expanding member 47. At exchange of the gas holder 46 the.
  • the handle 56 of the breaking or lifting device is manually pushed downwards to make the side elements 51, 52 of the clamping device 59 to release their grip about the gas holder 46.
  • the gas holder 46 and the quickcoupling 54 are thereupon turned upwards/outwards about the shaft 53 until the rearward wall 57 will not hamper the pulling out of the gas holder 46 from the quick-coupling 54.
  • a new, fully charged gas holder 46 can thereupon be placed in the quick-coupling 54 to be pushed down and be fixed in the clamping device 59.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

A breaking or lifting device (1) incorporating an expanding member (2) arranged to form an integrated unit with a gas holder (10) arranged for introduction of pressurized gas into the interior of the expanding member (2) and control means (11) being arranged in the unit for controlling the supply of gas in said expanding member (2).

Description

A BREAKING OR LIFTING DEVICE
Background of the invention
The present invention refers to a breaking or lifting device incorporating an expanding member i.e. a cushion, a bladder or the like, in which -pressurized gas can be introduced.
Breaking or lifting devices are today used in a plurality of different working moments such as wood felling, building works and as lift jacks for cars and for building struc tures etc. Such devices are for instance described in Swedish patent specification 391.109, US patent specifications 2.609.177 and 3.822.861 etc. and all of these devices incorporate an inflatable member designed as a cushion, a bladder or the like which is connected to an inflating device e.g. a combustion engine, a compressor or a hand operated pump. Such devices however are bulky and clumsy and each one of them is intended for a specific limited work purpose. Those devices which are inflated automatically, i.e. without the requirement that a manual work must be excerted, have further- more a complex design and they are therefore expensive to manufacture. The designs hitherto known are furthermore not suited for use where the space available for breaking or lifting devices is limited and where rapid operation is required e.g. at car accidents, accidents with collapsing buildings, or in other emergency situations.
Summary of the invention
The purpose of the present invention is to eliminate the abovementioned drawbacks at a reasonable cost and to provide a small-dimensioned breaking or lifting device which is easy to carry and which can preferably be used by the crew in different types of emergency vehicles at breaking or lifting operations e.g. for freeing persons who have got stuck in car accidents or at other breaking or lifting operations where the space for the breaking or lifting device is limited. This problem is solved thereby that the expanding member via at least one control valve is connected or connectable to a rechargeable and/or exchangeable gas holder arranged to form an integrated unit with the expanding member.
Brief description of the drawings
The invention will hereinafter be further described with reference to some embodiments shown in the accompanying drawings.
Figure 1 shows in an axial section a breaking or lifting device according to the invention,
Figure 2 shows a mounting bar in a section along line A - A in figure 1, Figure 3 shows a modified breaking or lifting device with a preset inflation pressure,
Figure 4 shows a further embodiment of a breaking or lifting device equipped with a rechargeable gas holder, Figure 5 shows a filling central for the breaking or lifting device shown in figure 4,
Figure 6 shows another embodiment of a breaking or lifting device having a laterally mounted, rechargeable gas holder, Figure 7 shows an expanding membemore in detail, Figure 8 shows another embodiment of an expanding member and a clamping device for the gas holder, and
Figure 9 is a section along line B - B through the gas holder and the clamping device shown in figure 8.
Description of some preferred embodiments
An expedient embodiment of a breaking or lifting device
1 according to the invention incorporates an expanding member 2 which by means of bolts or screws 3 at one of its ends is fixedly mounted in a mounting bar A, which is also shown in cross-section in figure 2. The internal expandable space of the expanding member 2 communicates via a tube 5 with a control valve 6 provided with a control member 11 and located in a handle-like casing 7 encasing a connecting element 8 with a bayonet joint to which is connected a knob- provided 9 gas holder 10.
When the breaking and lifting device shall be used the expanding member 2 is introduced in evacuated state between the parts which are to be separated, e.g. in a back cut at wood felling, whereupon the control member 11 is pushed down to a first active position. Pressurized gas thereby will pass from the gas holder 10 via the connecting element 8, the control valve 6 and the tube 5 into the expanding member 2 whereby this is expanded. The control member 11 is pushed further downwards to its second active position when the desired effect has been reached and the gas contained in the ex panding member 2 will thereby be evacuated via the outlet 12 and the breaking and lifting device can be removed from its working position.
In figure 3 is shown an alternative breaking or lifting device in which an exchangeable gas holder 20, provided with a screw joint 13 is connected to a support and control unit 14, in which is mounted a (not shown) pressure reduction valve which via a setting device 15 is adapted to limit i.e. to maximize the pressure to be excerted by the gas in the expanding member 2 to a desired level. An operating member 16 is adapted during hand-operation to allow supply of gas under pressure to the expanding member 2 and an evacuation member 17 is adapted during manual actuation to evacuate the gas present in the expanding member 2. The control unit 14 is connected to the mounting bar 4 in a manner similar to that described hereabove and it is therebv also connected to the expanding member 2. It is also possible to use with advantage a fixed, rechargeable gas holder such as shown in figure 4. The handle-shaped casing 21 is thus incorporating a rechargeable gas holder 22 provided with a filling valve 19, which is of course also equipped with a (not shown) no return valve, and a control valve 23 which communicates with the gas holder 22 and is equipped with a control member 24 .
The control member 24 can by manual actuation be put in two active positions (not shown), one first active position, where the control member 24 is acted upon in the direction of arrow 25, whereby gas from the gas holder is allowed to pass into the expanding member 2, and a second active position when the actuation takes place in the direction of arrow 26, whereby the gas is evacuated from the expanding member 2. In cases where the breaking or lifting device according to figure 4 is filled with compressed air is it possible to use a filling station according to figure 5 . A compressor 27 is via a conduit 30 connected to a panel 28 equipped with a plurality of filling sockets 29, through which compressed air can be supplied to several breaking or lifting devices simultaneously.
In figure 6 is shown an alternative embodiment of a breaking or lifting device with a rechargeable gas holder 21. The gas holder 31 is fixedly mounted perpendicularly to the handle-shaped casing 36, which is provided with a filling valve 33, a non-return valve 34 and a control valve 35. The control member 37 is hereby controlling the supply and evacuation of gas to/from the expanding member 2.
The expanding member 2 shown in figure 7 preferably comprises a supporting base 38 made from a rigid material, which has been provided with ducts 39 and openings 40. A pliable or flexible material, such as a rubber compound covered with nylon cord, forms the side portions 41 , 45 of the expanding member 2, whereby mounting bars 42 , 43 delimit the expanding member 2 longitudinally. Compressed air or another gas under pressure is supplied to the expanding member 2 from the gas holder 44 via the ducts 39 and the openings 40 whereby is obtained an expansion of the internal expanding member space between the mounting bars 42, 43 and the side portions 41 , 45. A force mainly proportional to the pressure excerted by the compressed air or the gas will thereby be obtained perpendicularly to the side portions 41, 45 of the expanding member 2 and a breaking or lifting moment will result.
Another embodiment of an expanding member is shown in figure 8 whereby a gas holder 46 will supply gas under pressure to a bellows-formed expanding member 47, provided with two legs 48, 49, which are pivotably supported relative to each other in a pivot 58. The legs 48, 49 can be provided with grooves or jags 50 intended for giving a good grip against the work surfaces. An exchangeable gas holder 46 is retained in a clamping device 59 made for instance from thermoplast and it is safely retained in place via springy side elements 51, 52. A quick-coupling which is supported rotatably about a shaft 53 connects the gas holder via a duct 55 and a (not shown) control valve to the expanding member 47. At exchange of the gas holder 46 the. handle 56 of the breaking or lifting device is manually pushed downwards to make the side elements 51, 52 of the clamping device 59 to release their grip about the gas holder 46. The gas holder 46 and the quickcoupling 54 are thereupon turned upwards/outwards about the shaft 53 until the rearward wall 57 will not hamper the pulling out of the gas holder 46 from the quick-coupling 54. A new, fully charged gas holder 46 can thereupon be placed in the quick-coupling 54 to be pushed down and be fixed in the clamping device 59.

Claims

What we claim is:
1. A breaking or lifting device incorporating an expanding member i.e. a cushion, a bladder or the like, in which pressurized gas can be introduced, c h a r a c t e r i z e d t h e r e b y, that the expanding member via at least one control valve is connected or connectable to a rechargeable and/or exchangeable gas holder arranged to form an integrated unit with the expanding member.
2. A breaking or lifting device according to claim 1, c h ar a c t e r i z e d t h e r e b y, that a pressure reducing valve is provided between the gas holder and the expanding member and arranged to reduce the gas pressure in the expandingmember.
3. A breaking or lifting device according to claims 1 or 2, c h a r a c t-e r i z e d t h e r e b y, that the gas holder is designed and arranged as a handle.
4. A breaking or lifting device according to claim 1 or 2, c h a r a c t e r i z e d t h e r e b y, that the gas holder is connected to or connectable. to a carrier or a clamping device designed as a handle.
5. A breaking or lifting device according to one or more of the preceding claims, c h a r a c t e r i z e d ther e b y, that the breaking or lifting device is equipped with a filling valve and/or is intended for connection to a filling central.
6. A breaking or lifting device according to one or more of the preceding claims, c h a r a c t e r i z e d the r e b y, that the gas holder is retained in a clamping device having at least two springy side portions.
7. A breaking or lifting device according to one or more of the preceding claims, c h a r a c t e r i z e d t h e r e b y, that a quick-coupling device is rotatably supported in a clamping device and arranged to be connected to the gas holder.
PCT/SE1979/000053 1978-03-13 1979-02-12 A breaking or lifting device WO1979000753A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE7802819 1978-03-13
SE7802819A SE410441B (en) 1978-03-13 1978-03-13 SWITCH OR LIFTING DEVICE

Publications (1)

Publication Number Publication Date
WO1979000753A1 true WO1979000753A1 (en) 1979-10-04

Family

ID=20334287

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1979/000053 WO1979000753A1 (en) 1978-03-13 1979-02-12 A breaking or lifting device

Country Status (7)

Country Link
EP (1) EP0019617A1 (en)
JP (1) JPS55500310A (en)
AT (1) AT364487B (en)
CA (1) CA1142165A (en)
FI (1) FI63732C (en)
SE (1) SE410441B (en)
WO (1) WO1979000753A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0088506A1 (en) * 1982-01-28 1983-09-14 Melville Reese Dill, Jr. Article separator for materials handling
FR2722819A1 (en) * 1994-07-19 1996-01-26 Hedin Jean Luc Wedge or pressure element for two adjacent structural components, used in civil engineering
WO2007050016A1 (en) * 2005-10-25 2007-05-03 Maxgrepp Teknik Ab Wedge-formed lifting cushion
FR3107576A1 (en) * 2020-02-26 2021-08-27 Gwénolé Le Jeune Hydraulic or pneumatic active hinge

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU3464493A (en) * 1992-04-10 1993-11-18 Hans Knutsen Diaphragm power jack
DE102008013968A1 (en) * 2008-03-12 2009-09-17 Handwerker, Franz-Josef Lifting and mounting device for resilient mounting of e.g. caravan, has cushion element filled with fluid, and attachment units i.e. plates, lie on cushion element or fastened to cushion element, which comprises cover

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3379411A (en) * 1967-03-17 1968-04-23 Scienco Inc Jacks employing elongated, tubular pneumatic elements
FR2265666A1 (en) * 1974-03-25 1975-10-24 Motte Patrick Travelling inflatable lifting jack - has bag with faces for support and load supplied with gas under pressure
DE2614754A1 (en) * 1975-04-11 1976-10-21 Pierre Joseph Pingon PNEUMATIC JACK

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3379411A (en) * 1967-03-17 1968-04-23 Scienco Inc Jacks employing elongated, tubular pneumatic elements
FR2265666A1 (en) * 1974-03-25 1975-10-24 Motte Patrick Travelling inflatable lifting jack - has bag with faces for support and load supplied with gas under pressure
DE2614754A1 (en) * 1975-04-11 1976-10-21 Pierre Joseph Pingon PNEUMATIC JACK

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0088506A1 (en) * 1982-01-28 1983-09-14 Melville Reese Dill, Jr. Article separator for materials handling
FR2722819A1 (en) * 1994-07-19 1996-01-26 Hedin Jean Luc Wedge or pressure element for two adjacent structural components, used in civil engineering
WO2007050016A1 (en) * 2005-10-25 2007-05-03 Maxgrepp Teknik Ab Wedge-formed lifting cushion
AU2006306833B2 (en) * 2005-10-25 2011-06-30 Maxgrepp Teknik Ab Wedge-formed lifting cushion
US8215615B2 (en) 2005-10-25 2012-07-10 Karl-Olof Niklasson Wedge-formed lifting cushion
FR3107576A1 (en) * 2020-02-26 2021-08-27 Gwénolé Le Jeune Hydraulic or pneumatic active hinge

Also Published As

Publication number Publication date
CA1142165A (en) 1983-03-01
FI63732B (en) 1983-04-29
AT364487B (en) 1981-10-27
ATA185379A (en) 1981-03-15
FI63732C (en) 1983-08-10
FI790843A (en) 1979-09-14
EP0019617A1 (en) 1980-12-10
SE410441B (en) 1979-10-15
JPS55500310A (en) 1980-05-29

Similar Documents

Publication Publication Date Title
EP0631533B1 (en) Portable rescue tool
US6299686B1 (en) Drywall taping and texture system using pump
US3379411A (en) Jacks employing elongated, tubular pneumatic elements
GB2269139A (en) Released door supporting and stabilizing tool
US4870994A (en) Air accumulator
JP2000026079A (en) Air jack
JP2005521503A5 (en)
WO1979000753A1 (en) A breaking or lifting device
US9056755B1 (en) Compact air compressor and vehicle jack
AU2519295A (en) Life-saving aid
US5414886A (en) Pneumatic floor supports for portable platforms
US6462455B2 (en) Turbine generator stator assembly having a compact inflatable device for applying localized pressure to armature bars
US4542882A (en) Air jack for use with a vehicle exhaust system
US7637480B2 (en) Extrication device and method therefor
CN218509665U (en) Portable compound control instrument
JP3197224B2 (en) Jack device for disaster relief
US20240051804A1 (en) Lifting system
GB2421454A (en) Bracing means
US3038203A (en) Heavy duty tire repair machine
KR100397801B1 (en) Jack for vehicle
WO1989000543A1 (en) Apparatus for remotely controlling a brake or accelerator pedal on a vehicle
KR200241574Y1 (en) Jack for vehicle
CN217863069U (en) Multi-station inflating device for gas column bag production
DE2701556A1 (en) Air pressure and suction blower - has battery-driven motor and air screw or air bucket wheel fitted in housing
CN219974856U (en) Inflating device for inflatable cushion

Legal Events

Date Code Title Description
AK Designated states

Designated state(s): BR DE GB JP US

AL Designated countries for regional patents

Designated state(s): DE FR