EP0803454A1 - Transfer arrangement - Google Patents
Transfer arrangement Download PDFInfo
- Publication number
- EP0803454A1 EP0803454A1 EP97301504A EP97301504A EP0803454A1 EP 0803454 A1 EP0803454 A1 EP 0803454A1 EP 97301504 A EP97301504 A EP 97301504A EP 97301504 A EP97301504 A EP 97301504A EP 0803454 A1 EP0803454 A1 EP 0803454A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cylinder
- piston
- transfer arrangement
- arrangement according
- support
- 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.)
- Granted
Links
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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
- F15B15/084—Characterised by the construction of the motor unit the motor being of the rodless piston type, e.g. with cable, belt or chain
Definitions
- This invention relates to a transfer arrangement and, in particular but not exclusively, to an arrangement for linear transfer of heavy or bulky items.
- a transfer arrangement comprising:
- the means connecting the support with the member may include a carriage moveable along a track.
- the carriage and track may be located below floor level.
- the carriage and track may be located above floor level.
- the rodless cylinder may be a pneumatic air cylinder.
- Pressurised fluid may be supplied to both ends of the cylinder, allowing the piston to be moved in both directions under close control.
- the cylinder may be pressurised on both sides of the piston and movement of the piston may be achieved by controlled exhaustion of fluid from one end of the cylinder. This arrangement has been found to provide for smooth and controlled movement of the piston and carriage.
- the track may be in the form of a pair of parallel rails with the cylinder located therebetween.
- the carriage may include wheels or rollers for engaging the track.
- the wheels or rollers may be configured such that the carriage will be moveable even if one wheel or roller should collapse.
- the carriage may include three pairs of wheels for engaging a pair of rails, and if one wheel collapses the carriage remains supported and moveable on the rails.
- Those parts of the arrangement located below floor level may be mounted within a housing embedded in the floor and defining the slot in the floor.
- connection between the support and the piston may permit a degree of vertical movement such that if, for example, the carriage wheels should collapse the carriage may come to rest on a fixed structural member, such as a housing, without damaging the cylinder.
- connection between the piston and the support may be releasable.
- the connection may be released to permit the support to be moved independently of the piston. In many applications it will be possible to move the loaded support manually along the track.
- FIGS 1 through 4 illustrate a transfer arrangement 10 for paper rolls in accordance with a preferred embodiment of the present invention.
- the arrangement 10 is set in a concrete floor substantially flush with the floor level which is indicated by chain dotted line 12 in Figure 4 of the drawings.
- the arrangement 10 is utilised to transfer large rolls of corrugated paper, typically weighing around two tonnes, from a loading station at one end of the arrangement to a paper handling machine at the other end of the arrangement.
- the arrangement 10 comprises a channel or housing 14 formed of a pair of universal columns 16, 17 joined by a plate 18.
- the housing 14 is thus inexpensive to manufacture and the external configuration of the housing 14 facilitates secure location of the housing 14 within a floor.
- the housing 14 defines a cuboid volume 20 which accommodates a track in the form of a pair of rails 22, 23, a carriage in the form of a bogie 24 which runs on the rails 22, 23 and a pneumatic rodless cylinder 26 which extends through the housing 14 between the rails 22, 23.
- the cylinder 26 includes a piston and defines a slot which is normally closed by a seal but arranged to permit a member 27 connected with the piston to move along the slot with the piston.
- the cylinder 26 is a 40 mm diameter cylinder with a four metre stroke.
- the upper face of the housing 14 defines a slot 28 through which a member 30 extends to link the bogie 24 to a support plate 32 on which the paper rolls are positioned.
- the rails 22, 23 are screwed and welded to the face of the housing 14, and as may be seen from Figures 1, 2 and 3 the rails 22, 23 extend beyond one end of the housing 14: in this example, the housing 14 is five metres long while the rails 22, 23 are six metres long. This permits the "free" ends of the rails 22, 23 to be connected by an angle member 34 screwed into the upper faces of the rails 22, 23 and also allows the free ends of the rails to be set in concrete when the track 10 is installed such that the rails 22, 23 do not rely solely upon the housing 14 for support and location.
- the bogie 24 includes a central inverted U-shaped channel member 36 on which three pairs of wheels 38 are mounted for engaging the rails 22, 23.
- the wheels 38 may be mounted to the channel member 36 using stub axles 40 as illustrated, though in other embodiments the end pairs of wheels may be mounted on single axles.
- a box section 42 Centrally located within the channel member 36 is a box section 42 which is retained relative to the remainder of the bogie 24 by a pair of cap screws 44 which pass through the support plate 32 and member 30.
- a slotted fork 46 Mounted to the underside of the box section 42 is a slotted fork 46 which engages a transverse bar 48 linked to the member 27 and hence the cylinder piston.
- the slots in the fork 46 provide for a degree of vertical movement between the fork 46 and the bar 48 such that the cylinder 26 does not have to support any vertical load and in the event of, for example, the wheels 38 collapsing the support plate 32 will engage the upper face of the housing 14 before the base of the fork slots engage on the bar 48.
- the cylinder 26 is fixed on the plate 18 which joins the bases of the columns 16, 17 with a mid-section support 50 and two end supports 52, 53.
- the cylinder 26 is connected to a pressurised air supply 54, as illustrated schematically in Figure 5 of the drawings. Air is separately supplied to each end of the cylinder 26 through appropriate tubes 56 and control valves 58, 59. The ends of the cylinder on both sides of the piston are normally pressurised to 6 bar, such that the piston, and thus the bogie 24, is maintained to the desired position. To move the bogie 24 the operator configures one of the valves 58, 59 to exhaust gas from one end of the cylinder, such that the higher pressure in the other end portion of the cylinder pushes the piston towards the low pressure end. The travel of the bogie 24 is limited by a pair of air springs 60, 61 provided at the ends of the housing 14.
- the bogie 24 may be uncoupled from the cylinder 26 to permit the bogie 24, and any paper rolls supported thereon, to be moved manually until an opportunity arises for repairs to be made.
- the transfer arrangement of the present invention may be used in a wide variety of applications, for example, in aircraft transfer systems on the decks of ships.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
- Seal Device For Vehicle (AREA)
- Massaging Devices (AREA)
- Gloves (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Electrically Driven Valve-Operating Means (AREA)
- Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)
Abstract
- a support (32) above floor level (12) for an item to be transferred;
- a rodless cylinder (26) including a piston mounted below floor level;
- the cylinder defining a slot which is normally closed by a seal, the seal being arranged to permit a member connected with the piston to move along the slot with the piston;
- means extending through a slot (28) in the floor and connecting the support with said member;
- means for supplying pressurised fluid to the cylinder to move the piston through the cylinder and thus the support along the slot in the floor.
Description
- This invention relates to a transfer arrangement and, in particular but not exclusively, to an arrangement for linear transfer of heavy or bulky items.
- In many industries bulk materials and other large or heavy items are transferred within factories using bogies which travel along rails or tracks mounted in a channel below floor level. The bogies are typically connected to an endless chain which passes around a sprocket driven by an electric or hydraulic motor. While such transfer systems generally operate satisfactorily, the chains do tend to stretch, requiring adjustment of the system, and such stretching does not tend to occur evenly over the length of the chain such that chains may have to be replaced at relatively frequent intervals. In addition, chains are vulnerable to contamination and may wear rapidly if used in dirty or dusty environments. Further, the requirement to provide an electric or hydraulic motor below floor level complicates the installation and maintenance of such systems.
- It is among the objects of aspects of the present invention to provide a transfer arrangement which obviates or mitigates these disadvantages.
- According to the present invention there is provided a transfer arrangement comprising:
- a support above floor level for an item to be transferred;
- a rodless cylinder including a piston mounted below floor level;
- the cylinder defining a slot which is normally closed by a seal, the seal being arranged to permit a member connected with the piston to move along the slot with the piston;
- means extending through a slot in the floor and connecting the support with said member;
- means for supplying pressurised fluid to the cylinder to move the piston through the cylinder and thus the support along the slot in the floor.
- The means connecting the support with the member may include a carriage moveable along a track.
- The carriage and track may be located below floor level.
- The carriage and track may be located above floor level.
- The rodless cylinder may be a pneumatic air cylinder.
- Pressurised fluid may be supplied to both ends of the cylinder, allowing the piston to be moved in both directions under close control. The cylinder may be pressurised on both sides of the piston and movement of the piston may be achieved by controlled exhaustion of fluid from one end of the cylinder. This arrangement has been found to provide for smooth and controlled movement of the piston and carriage.
- The track may be in the form of a pair of parallel rails with the cylinder located therebetween.
- The carriage may include wheels or rollers for engaging the track. The wheels or rollers may be configured such that the carriage will be moveable even if one wheel or roller should collapse. The carriage may include three pairs of wheels for engaging a pair of rails, and if one wheel collapses the carriage remains supported and moveable on the rails.
- Those parts of the arrangement located below floor level may be mounted within a housing embedded in the floor and defining the slot in the floor.
- The connection between the support and the piston may permit a degree of vertical movement such that if, for example, the carriage wheels should collapse the carriage may come to rest on a fixed structural member, such as a housing, without damaging the cylinder.
- The connection between the piston and the support may be releasable. Thus, if the arrangement develops a fault such that the piston cannot be moved, the connection may be released to permit the support to be moved independently of the piston. In many applications it will be possible to move the loaded support manually along the track.
- This and other aspects of the present invention will now be described, by way of example, with reference to the accompanying drawings, in which:
- Figure 1
- is a side elevation of a transfer system according to a preferred embodiment of the present invention;
- Figure 2
- is a plan view of the system of Figure 1;
- Figure 3
- is a sectional view through line A-A of Figure 2;
- Figure 4
- is a somewhat enlarged sectional view through line B-B of Figure 1;
- Figure 5
- is a schematic representation of the pneumatic controls of the system in Figure 1; and
- Figure 6
- is a view similar to that of Figure 4 but showing a modified configuration.
- Figures 1 through 4 illustrate a
transfer arrangement 10 for paper rolls in accordance with a preferred embodiment of the present invention. - The
arrangement 10 is set in a concrete floor substantially flush with the floor level which is indicated by chain dottedline 12 in Figure 4 of the drawings. In this embodiment thearrangement 10 is utilised to transfer large rolls of corrugated paper, typically weighing around two tonnes, from a loading station at one end of the arrangement to a paper handling machine at the other end of the arrangement. - The
arrangement 10 comprises a channel orhousing 14 formed of a pair ofuniversal columns plate 18. Thehousing 14 is thus inexpensive to manufacture and the external configuration of thehousing 14 facilitates secure location of thehousing 14 within a floor. Internally, thehousing 14 defines acuboid volume 20 which accommodates a track in the form of a pair ofrails bogie 24 which runs on therails rodless cylinder 26 which extends through thehousing 14 between therails - The
cylinder 26 includes a piston and defines a slot which is normally closed by a seal but arranged to permit amember 27 connected with the piston to move along the slot with the piston. In this embodiment, thecylinder 26 is a 40 mm diameter cylinder with a four metre stroke. The upper face of thehousing 14 defines aslot 28 through which amember 30 extends to link thebogie 24 to asupport plate 32 on which the paper rolls are positioned. - The
rails housing 14, and as may be seen from Figures 1, 2 and 3 therails housing 14 is five metres long while therails rails angle member 34 screwed into the upper faces of therails track 10 is installed such that therails housing 14 for support and location. - The
bogie 24 includes a central inverted U-shapedchannel member 36 on which three pairs ofwheels 38 are mounted for engaging therails wheels 38 may be mounted to thechannel member 36 usingstub axles 40 as illustrated, though in other embodiments the end pairs of wheels may be mounted on single axles. - Centrally located within the
channel member 36 is abox section 42 which is retained relative to the remainder of thebogie 24 by a pair ofcap screws 44 which pass through thesupport plate 32 andmember 30. Mounted to the underside of thebox section 42 is aslotted fork 46 which engages atransverse bar 48 linked to themember 27 and hence the cylinder piston. The slots in thefork 46 provide for a degree of vertical movement between thefork 46 and thebar 48 such that thecylinder 26 does not have to support any vertical load and in the event of, for example, thewheels 38 collapsing thesupport plate 32 will engage the upper face of thehousing 14 before the base of the fork slots engage on thebar 48. - The
cylinder 26 is fixed on theplate 18 which joins the bases of thecolumns mid-section support 50 and two end supports 52, 53. - The
cylinder 26 is connected to apressurised air supply 54, as illustrated schematically in Figure 5 of the drawings. Air is separately supplied to each end of thecylinder 26 throughappropriate tubes 56 andcontrol valves bogie 24, is maintained to the desired position. To move thebogie 24 the operator configures one of thevalves bogie 24 is limited by a pair ofair springs housing 14. - The simplicity of the
arrangement 10, and the minimal number of moving parts required, allowthearrangement 10 to be manufactured and installed at a lower cost than comparable endless chain transfer systems. Further, initial testing has shown that thearrangement 10 is reliable in operation and it is anticipated that the track will be usable for an extended period (up to 10 years) without requiring substantial maintenance or repair. Testing has also shown that, if necessary, thebogie 24 may be easily uncoupled from thecylinder 26 by removing the cap screws 44 and thecylinder 26 then removed and replaced within the space of 20 minutes. This compares most favourably with maintenance and repair operations on conventional systems. Further, in the unlikely event of a cylinder failure or, for example, failure of theair supply 54, thebogie 24 may be uncoupled from thecylinder 26 to permit thebogie 24, and any paper rolls supported thereon, to be moved manually until an opportunity arises for repairs to be made. - In the arrangement of Figure 6, wherein like parts are indicated by like reference numerals the track and carriage are provided above floor level, the carriage being connected with the
member 27 by apost 60 engaging asocket 61 on the underside of the carriage. - It will be clear to those of skill in the art that the above-described embodiments are merely exemplary of the present invention, and that various modifications and improvements may be made thereto without departing from the scope of the invention as defined by the appended claims.
- In particular it will be evident that the transfer arrangement of the present invention may be used in a wide variety of applications, for example, in aircraft transfer systems on the decks of ships.
Claims (11)
- A transfer arrangement comprising:a support above floor level for an item to be transferred;a rodless cylinder including a piston mounted below floor level;the cylinder defining a slot which is normally closed by a seal, the seal being arranged to permit a member connected with the piston to move along the slot with the piston;means extending through a slot in the floor and connecting the support with said member;means for supplying pressurised fluid to the cylinder to move the piston through the cylinder and thus the support along the slot in the floor.
- A transfer arrangement according to claim 1 wherein the means connecting the support with the member includes a carriage moveable along a track.
- A transfer arrangement according to claim 2 wherein the carriage and track are located below floor level.
- A transfer arrangement according to claim 2 wherein the carriage and track are located above floor level.
- A transfer arrangement according to any preceding claim wherein the rodless cylinder is a pneumatic air cylinder.
- A transfer arrangement according to any preceding claim wherein pressurised fluid is supplied to both ends of the cylinder, allowing the piston to be moved in both directions under close control, movement of the piston being achieved by controlled exhaustion of fluid from one end of the cylinder.
- A transfer arrangement according to claim 2 wherein the track is in the form of a pair of parallel rails with the cylinder located therebetween.
- A transfer arrangement according to claim 2 wherein the carriage includes wheels or rollers for engaging the track.
- A transfer arrangement according to any preceding claim wherein those parts of the arrangement located below floor level are mounted within a housing embedded in the floor and defining the slot in the floor.
- A transfer arrangement according to any preceding claim wherein the connection between the support and the piston permits a degree of vertical movement.
- A transfer arrangement according to any preceding claim wherein the connection between the piston and the support is releasable.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9608580 | 1996-04-24 | ||
GBGB9608580.8A GB9608580D0 (en) | 1996-04-24 | 1996-04-24 | Transfer arrangement |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0803454A1 true EP0803454A1 (en) | 1997-10-29 |
EP0803454B1 EP0803454B1 (en) | 2003-05-21 |
Family
ID=10792630
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97301504A Expired - Lifetime EP0803454B1 (en) | 1996-04-24 | 1997-03-06 | Transfer arrangement |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0803454B1 (en) |
AT (1) | ATE240892T1 (en) |
DE (1) | DE69722073D1 (en) |
GB (1) | GB9608580D0 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT407430B (en) * | 1999-01-22 | 2001-03-26 | Hygrama Ag | COMBINED DRIVE AND GUIDE SYSTEM FOR A LOAD TO BE MOVED |
CN108953291A (en) * | 2018-08-08 | 2018-12-07 | 深圳市南硕明泰科技有限公司 | A kind of cylinder for industrial carrying |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3421718A (en) * | 1967-01-18 | 1969-01-14 | United Aircraft Corp | Integral seal for aircraft launching cylinder |
US3838769A (en) * | 1973-09-07 | 1974-10-01 | C Traughber | Lift-and-lay conveyor |
DE2943506A1 (en) * | 1979-10-27 | 1981-05-07 | W. Schlafhorst & Co, 4050 Mönchengladbach | Combination cylinder and piston unit - has rollers on narrow section piston to reduce friction acting on circular sealing strips |
EP0157892A1 (en) * | 1984-04-10 | 1985-10-16 | Reinhard Lipinski | Linear transporter |
GB2189451A (en) * | 1986-04-24 | 1987-10-28 | Yushin Seiki Kabushiki Kaisha | Slide cylinder device for reciprocal movement of a carriage |
WO1988002347A1 (en) * | 1986-09-23 | 1988-04-07 | Hydraroll Limited | Mechanical handling apparatus |
EP0536799A1 (en) * | 1991-10-11 | 1993-04-14 | Smc Kabushiki Kaisha | Rodless cylinder |
EP0654608A1 (en) * | 1993-11-19 | 1995-05-24 | Hygrama Ag | Method of controlling the movement of a fluid pressure cylinder and fluid pressure cylinder |
-
1996
- 1996-04-24 GB GBGB9608580.8A patent/GB9608580D0/en active Pending
-
1997
- 1997-03-06 AT AT97301504T patent/ATE240892T1/en not_active IP Right Cessation
- 1997-03-06 EP EP97301504A patent/EP0803454B1/en not_active Expired - Lifetime
- 1997-03-06 DE DE69722073T patent/DE69722073D1/en not_active Expired - Lifetime
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3421718A (en) * | 1967-01-18 | 1969-01-14 | United Aircraft Corp | Integral seal for aircraft launching cylinder |
US3838769A (en) * | 1973-09-07 | 1974-10-01 | C Traughber | Lift-and-lay conveyor |
DE2943506A1 (en) * | 1979-10-27 | 1981-05-07 | W. Schlafhorst & Co, 4050 Mönchengladbach | Combination cylinder and piston unit - has rollers on narrow section piston to reduce friction acting on circular sealing strips |
EP0157892A1 (en) * | 1984-04-10 | 1985-10-16 | Reinhard Lipinski | Linear transporter |
GB2189451A (en) * | 1986-04-24 | 1987-10-28 | Yushin Seiki Kabushiki Kaisha | Slide cylinder device for reciprocal movement of a carriage |
WO1988002347A1 (en) * | 1986-09-23 | 1988-04-07 | Hydraroll Limited | Mechanical handling apparatus |
EP0536799A1 (en) * | 1991-10-11 | 1993-04-14 | Smc Kabushiki Kaisha | Rodless cylinder |
EP0654608A1 (en) * | 1993-11-19 | 1995-05-24 | Hygrama Ag | Method of controlling the movement of a fluid pressure cylinder and fluid pressure cylinder |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT407430B (en) * | 1999-01-22 | 2001-03-26 | Hygrama Ag | COMBINED DRIVE AND GUIDE SYSTEM FOR A LOAD TO BE MOVED |
CN108953291A (en) * | 2018-08-08 | 2018-12-07 | 深圳市南硕明泰科技有限公司 | A kind of cylinder for industrial carrying |
Also Published As
Publication number | Publication date |
---|---|
ATE240892T1 (en) | 2003-06-15 |
EP0803454B1 (en) | 2003-05-21 |
DE69722073D1 (en) | 2003-06-26 |
GB9608580D0 (en) | 1996-07-03 |
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