GB2198414A - Side-lift truck - Google Patents
Side-lift truck Download PDFInfo
- Publication number
- GB2198414A GB2198414A GB08628778A GB8628778A GB2198414A GB 2198414 A GB2198414 A GB 2198414A GB 08628778 A GB08628778 A GB 08628778A GB 8628778 A GB8628778 A GB 8628778A GB 2198414 A GB2198414 A GB 2198414A
- Authority
- GB
- United Kingdom
- Prior art keywords
- carrier
- load
- well
- handling vehicle
- load handling
- 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
Classifications
-
- 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
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/08—Masts; Guides; Chains
- B66F9/10—Masts; Guides; Chains movable in a horizontal direction relative to truck
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Forklifts And Lifting Vehicles (AREA)
Description
11 - 1 - 2198414 L z_ LOAD HANDLING VEHICLE The invention relates to load
handling vehicles of the kind which have a fixed load supporting platform and a lifting mast mounted on a carrier for traversing movement within the platform. In such vehicles a well is formed in the load supporting platform and the carrier is supported on rollers which run in C-shaped load-bearing channels mounted facing each other on either side of the well. Vehicles of this kind are generally known as Side-Lift Trucks.
Lateral guidance of the carrier in known vehicles is by means of side thrust rollers mounted on either side of the carrier and running on the vertical faces of the load-bearing channels. In order to minimise 'walking' and jamming of the carrier it is necessary for the mounts for the side thrust rollers to be carefully shimmed so that the desired positioning of the side thrust rollers relative to the load supporting channels is precisely achieved. This arrangement also requires great accuracy in the alignment of the load bearing channels relative to one another.
The present invention does away with the need for conventional side thrust rollers mounted on both sides of the carrier and provides an arrangement whereby all the guidance of the carrier is tied to one side thereof and whereby the load bearing channels simply provide support tracks for the carrier supporting rollers and play no part in the lateral guidance of the carrier.
- 2 According to the present invention, there is provided a load handling vehicle comprising a frame which provides a load supporting platform in which a well is formed, a lifting mast, a carrier on which the lifting mast is mounted for traversing movement of the platform within the well, a pair of horizontally extending C-shaped load-bearing channels mounted facing each other one on either side of the well with their webs substantially vertical, and carrier supporting rollers mounted on the carrier and running in the load-bearing channels; wherein the vehicle further comprises a horizontally extending C-shaped guide channel mounted with its web substantially horizontal adjacent one of the load-bearing channels and parallel thereto, and at least two guide rollers mounted on the carrier and running in the guide channel.
Movement of the carrier in one known vehicle of the type described is by means of hydraulic cylinders connected between the vehicle frame and the carrier. Such arrangements have inherent faults such as undesirable 'walking' effects, slewing and jamming of the mast and dangerous load swing. Other systems use hydraulic motors instead of cylinders and use chains to drive the carrier; these systems suffer from problems of excessive hydraulic flow demand, lack of power for straightening loads, and complexity of maintenance and service of the motor itself.
1 According to a preferred feature of the invention, the carrier is moved by at least one extensible cylinder connected between the carrier and-the frame and extending diagonally across the well. Preferably, a pair of such cylinders are provided connected one on each side of the carrier.
Such an arrangement of cylinders has been found to work very well with the carrier guidance arrangement provided by the present invention to provide a lifting vehicle in which the carrier can be smoothly and controllably moved across the platform without the disadvantages exhibited by prior arrangements.
An embodiment of the invention is described below with reference to the accompanying drawings in which:
FIGURE 1 is a diagrammatic plan view of part of a load.handling vehicle; and FIGURE 2 is a diagrammatic side view looking along the line of arrow A in Figure 1.
Figure 1 shows part of a Side-Lift Truck having a main frame provided mainly by a number of beams 1, 2, 3, 4, 5. The frame provides a flat load supporting platform 6 having a central well 7 formed therein. Mounted on the frame beams 1 and 2 on either side of the well are a pair of horizontally extending C-shaped load-bearing channels 9 and 10; the webs 11, 12 of the channels being substantially vertical.
- 4 A carrier 13 is mounted for traversing movement of the platform and is supported on rollers 14 which run on the lower horizontal flanges 15 of the channels 11, 12. It will be understood that the carrier supports an extensible mast for lifting and carrying loads; only the uprights 16 of the mast being shown in the drawings. The rollers 14 are mounted on lateral members 17, 18 of the carrier.
On one side of the well, a horizontally extending C-shaped guide channel 19 is mounted, with its web 20 substantially horizontal, adjacent the respective load-bearing channel 11. A pair of guide rollers 21 are mounted on the carrier 13 by means of a bracket 22. The rollers 21 are mounted to run in the guide channel 19 with a small clearance between the outer surface of the roller and the flanges 23 of the guide channel.
Correct positioning of the guide rollers 21 in the guide channel 19 can be achieved by vertical and horizontal adjustment of the bracket 22 such as by shimming. The inner surfaces of the flAnges 23 may flare slightly such that the clearance between those surfaces and the guide roller can be adjusted by vertical movement of the guide roller.
Movement of the carrier along the channels 9 and 10 is effected by a pair of hydraulic cylinders 24 coupled between the carrier and the vehicle frame.
Guidance of the carrier is thus carried out only on one side thereof and the load-bearing channels simply provide support tracks for the rollers 14-by means of their lower flanges 15 and play no part in the lateral guidance of the carrier.
Claims (5)
- A load handling vehicle comprising a frame which provides a load supporting platform in which a well is formed, a lifting mast, a carrier on which the lifting mast is mounted for traversing movement of the platform within the well, a pair of horizontally extending C-shaped loadbearing channels mounted facing each other one on either side of the well with their webs substantially vertical, and carrier supporting rollers mounted on the carrier and running in the load-bearing channels; wherein the vehicle further comprises a horizontally extending C-shaped guide channel mounted with its web substantially horizontal adjacent one of the load-bearing channels and parallel thereto, and at least two guide rollers mounted on the carrier and running in the guide channel
- 2. A load handling vehicle as claimed in claim 1 wherein at least one extensible cylinder is provided for moving the carrier along the load- bearing channels; the cylinder being connected between the carrier and the frame and extending diagonally across the well.
- 3. A load handling vehicle as claimed in claim 2 wherein a pair of such cylinders are provided connected one on each side of the carrier.
- 4. A load handling vehicle as claimed in any preceding claim wherein the guide rollers are mounted on the carrier with means for adjustmenfvertically and laterally of the carrier.
- 5. A load handling vehicle substantially as described herein with reference to the accompanying drawings.Pubhshed 1988 at The Patent Office, State House, 66.71 High Holborn, Londin WCIR 4TP. Further copies may be obtained from The Patent Office, Sales Branch, St Mary Cray, Orpington, Kent BR5 M. Printed by Multiplex techniques ltd, St Mary Cray, Kent. Con. 1/87,
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8628778A GB2198414B (en) | 1986-12-02 | 1986-12-02 | Load handling vehicle |
ES87310345T ES2023421B3 (en) | 1986-12-02 | 1987-11-24 | HANDLING OF CARGO VEHICLE |
DE8787310345T DE3771475D1 (en) | 1986-12-02 | 1987-11-24 | LOAD HANDING VEHICLE. |
EP19870310345 EP0274837B1 (en) | 1986-12-02 | 1987-11-24 | Load handling vehicle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8628778A GB2198414B (en) | 1986-12-02 | 1986-12-02 | Load handling vehicle |
Publications (3)
Publication Number | Publication Date |
---|---|
GB8628778D0 GB8628778D0 (en) | 1987-01-07 |
GB2198414A true GB2198414A (en) | 1988-06-15 |
GB2198414B GB2198414B (en) | 1990-04-18 |
Family
ID=10608309
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8628778A Expired - Fee Related GB2198414B (en) | 1986-12-02 | 1986-12-02 | Load handling vehicle |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0274837B1 (en) |
DE (1) | DE3771475D1 (en) |
ES (1) | ES2023421B3 (en) |
GB (1) | GB2198414B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITVR20110082A1 (en) | 2011-04-28 | 2012-10-29 | Baumann S R L | CONTROL UNIT AND GUIDE FOR LIFT TRUCK COLUMN POST WITH SIDE, 2-WAY, 4-WAY OR MULTI-DIRECTIONAL TROLLEY AND SIDE-LIFT TROLLEY, TWO-WAY, FOUR-WAY OR MULTI-DIRECTIONAL. |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2897985A (en) * | 1956-08-22 | 1959-08-04 | David J Carlson | Self-loading truck |
FR1195943A (en) * | 1957-05-17 | 1959-11-20 | Lansing Bagnall Ltd | Improvements to forklifts and similar machines |
DE1229002B (en) * | 1964-10-27 | 1966-11-17 | Hans Still Ges Mit Beschraenkt | Lift truck with a lifting mast that can be moved horizontally in the chassis |
DE2005358C3 (en) * | 1970-02-06 | 1975-06-05 | Albert Irion Nachfolger, 7000 Stuttgart | Side loader with transversely adjustable lifting mast |
US3739931A (en) * | 1971-02-01 | 1973-06-19 | Lancer Boss Ltd | Side loaders |
NL157871B (en) * | 1973-09-07 | 1978-09-15 | Cubic Handling Systems Nv | MOBILE STACKING DEVICE. |
US3958703A (en) * | 1974-11-13 | 1976-05-25 | Allis-Chalmers Corporation | Side loader main frame |
-
1986
- 1986-12-02 GB GB8628778A patent/GB2198414B/en not_active Expired - Fee Related
-
1987
- 1987-11-24 DE DE8787310345T patent/DE3771475D1/en not_active Expired - Fee Related
- 1987-11-24 EP EP19870310345 patent/EP0274837B1/en not_active Expired - Lifetime
- 1987-11-24 ES ES87310345T patent/ES2023421B3/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
ES2023421B3 (en) | 1992-01-16 |
DE3771475D1 (en) | 1991-08-22 |
EP0274837A1 (en) | 1988-07-20 |
EP0274837B1 (en) | 1991-07-17 |
GB8628778D0 (en) | 1987-01-07 |
GB2198414B (en) | 1990-04-18 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
732E | Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977) | ||
732E | Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977) | ||
PCNP | Patent ceased through non-payment of renewal fee |