GB2387367A - Industrial truck with hose deflection roller - Google Patents
Industrial truck with hose deflection roller Download PDFInfo
- Publication number
- GB2387367A GB2387367A GB0208371A GB0208371A GB2387367A GB 2387367 A GB2387367 A GB 2387367A GB 0208371 A GB0208371 A GB 0208371A GB 0208371 A GB0208371 A GB 0208371A GB 2387367 A GB2387367 A GB 2387367A
- Authority
- GB
- United Kingdom
- Prior art keywords
- deflection roller
- industrial truck
- lifting frame
- carrying element
- moved
- 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
- B66F9/20—Means for actuating or controlling masts, platforms, or forks
- B66F9/205—Arrangements for transmitting pneumatic, hydraulic or electric power to movable parts or devices
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Electric Cable Arrangement Between Relatively Moving Parts (AREA)
- Forklifts And Lifting Vehicles (AREA)
Abstract
An industrial truck has a lifting frame (1 Fig 1) and a load lifting device which can be moved up and down on the lifting frame and to which at least one electric cable (2) is guided over at least one deflection roller (4) fixed to the lifting frame (1). In order to lay the cable (2) in a functionally reliable manner, the deflection roller (4) is connected to the lifting frame (1) such that it can be moved in the direction of the cable lay counter to spring force. It is therefore possible for the cable (2) to be laid without play. In this case, a tensioning device integrated into the deflection roller (4) and provided to act on the electric cable (2) may be arranged so that it is within the axial extent of the deflection roller (4).
Description
Industrial truck The invention relates to an industrial truck having a
lifting frame and a load lifting device which can be moved up and down on the lifting frame and to which at least one 5 electric cable is guided over at least one deflection roller fixed to the lifting frame.
Industrial trucks of the above frequently have a plurality of hydraulic loads, which can be moved up and down together with the load lifting device. In order not to have to lay a dedicated feed and discharge line to each load on the lifting frame, it is known, from 10 DE 199 03 160 A1, to provide an electrically driven pump unit together with a power storage means for the hydraulic loads on the load lifting device and to feed the power storage means by means of an electric cable through a power source on the vehicle side. In the simplest case, it is therefore merely necessary to lay an electric cable to the load lifting device.
An object of the invention is to provide an industrial truck of the above type in which the cable is laid in a functionally reliable way.
According to the invention, the deflection roller is connected to the lifting frame such 20 that it can be moved in the direction of the cable lay counter to spring force.
The electric cable guided over the deflection roller is therefore pretensioned and free of play. The deflection roller thus performs the function of a tensioning device for the electric cable. As a result, lateral knocking of the cable and damage resulting from this 25 are avoided. Furthermore, it provides compensation for expansion of the cable, which may possibly occur after relatively long operation.
According to an advantageous development of the invention, a tensioning device integrated into the deflection roller and provided to act on the electric cable is arranged 30 within the axial extent of the deflection roller. As compared with a deflection roller without a tensioning device, this results in an additional saving of space.
One configuration of the invention provides for the deflection roller to have a disc-like carrying element which, by means of a longitudinal guide, is connected to the lifting
frame such that it can be moved vertically, the longitudinal guide being operatively connected to at least one spring.
With regard to a functionally reliable and simple construction, it is advantageous if the 5 longitudinal guide is constructed as a staffed guide with a slot and a sliding block, the slot being arranged in the carrying element and the sliding block being provided to be fixed to the lifting frame, and the spring being located in the displacement direction between the sliding block and an abutment of the carrying element and being designed as a compression spring.
For assembly reasons, a refinement in which the carrying element is divided longitudinally is beneficial.
The sliding block is expediently provided with at least one hole which is arranged in the 15 displacement direction and in which a guide pin can be moved longitudinally, carries the spring designed as a compression spring and, with its end opposite the hole, rests against an abutment integrally moulded on the carrying element.
Further advantages and details of the invention will be explained in more detail using 20 an exemplary embodiment illustrated in the accompanying schematic drawings, in which: Figure 1 shows a side view of an industrial truck according to the invention, 25 Figure 2 shows a side view of a deflection roller and Figure 3 shows a section through the deflection roller along the line lil-lil in Figure 2.
Referring to the drawings, the industrial truck illustrated is constructed as a 30 counterweight fork-lift truck with a lifting frame 1 at the front, to which is fitted a load lifting device (not shown), for example a fork carrier.
Of course, it is also possible to fit the load lifting device to any other suitable industrial truck, for example those in which the load is transported within the wheelbase, such as 35 reach trucks.
An electric cable 2, which is led from an electric power source arranged in the vehicle body 3 over a deflection roller 4 fixed to the lifting frame 1, ends on the load lifting device. 5 The cable 2 is used to supply electric components, which are fixed to the load lifting device and can be moved up and down together with the latter on the lifting frame 1.
These may be, for example, an electromagnetically switchable valve for hydraulic loads. Using the valve, it is possible to switch to and from between a plurality of loads, so that only two hydraulic hose lines (feed and return) have to be led to the load lifting 1 0 device.
The construction of the deflection roller 4 is illustrated in Figure 2. A guide ring 6 is rotatably mounted on a disc-like carrying element 5. The guide ring 6, which has a trough-like cross section, accommodates the electric cable illustrated in Figure 1. The 15 carrying element 5 is provided with a linear guide designed as a slotted guide. In this case, a sliding block 7, which is screwed to the lifting frame 1, is arranged in a vertically arranged slot 8 in the carrying element 5. The carrying element 5 can therefore be moved vertically with respect to the sliding block 7.
20 Supported on the sliding block 7 are prestressed springs 9, 10 which, in each case at the opposite end, rest on an abutment which is formed by a boundary wall of the slot 8 in the carrying element 5. The springs 9 and 10 attempt to urge the carrying element 5 away from the sliding block 7. The carrying element 5 and the guide ring 6 are therefore acted on by a force acting vertically upwards. The slotted guide, together with 25 the two springs 9, 10, therefore forms a tensioning device integrated into the deflection roller 4 for the electric cable 2. Two brackets 11 and 12 serve as a catching safeguard for the case in which the electric cable 2 jumps off the guide ring 6 As can be seen from Figure 3, the carrying element 5 is divided longitudinally and 30 comprises two carrying element halves 5a and fib. For improved clarity, the guide ring 6 is not illustrated in Figure 3. Holes 13, in which in each case a guide pin 14 can be moved vertically and longitudinally, are made in the sliding block 7. Each guide pin 14 is encased by one of the springs 9 or 10 and therefore prevents the springs 9, 10 kinking outwards under compressive loading.
As a result of the division of the carrying element 5, firstly the guide ring 6 may be mounted more easily, and secondly the deflection roller 4 can be fixed to the lifting
frame 1 in the preassembled state. The tensioning device comprising the slotted guide and the springs 9, 10 (together with guide pins 14) and integrated into the deflection roller 4 is arranged within the axial extent of the deflection roller 4.
Claims (7)
1. Industrial truck having a lifting frame and a load lifting device which can be moved up and down on the lifting frame and to which at least one electric cable is guided over at least one deflection roller fixed to the lifting frame, wherein the deflection 5 roller is connected to the lifting frame such that it can be moved in the direction of the cable lay counter to spring force.
2. Industrial truck according to Claim 1, wherein a tensioning device integrated into the deflection roller and provided to act on the electric cable is arranged within the 10 axial extent of the deflection roller.
3. Industrial truck according to Claim 1 or Claim 2, wherein the deflection roller has a disc-like carrying element which, by means of a longitudinal guide, is connected to the lifting frame such that it can be moved vertically, the longitudinal guide being 15 operatively connected to at least one spring.
4. Industrial truck according to Claim 3, wherein the longitudinal guide is constructed as a slotted guide with a slot and a sliding block, the slot being arranged in the carrying element and the sliding block being provided to be fixed to the lifting 20 frame, and the spring being located in the displacement direction between the sliding block and an abutment of the carrying element and being designed as a compression spring.
5. Industrial truck according to Claim 4, wherein the carrying element is divided 25 longitudinally.
6. Industrial truck according to Claim 4 or Claim 5, wherein the sliding block is provided with at least one hole which is arranged in the displacement direction and in which a guide pin can be moved longitudinally, carries the spring designed as a 30 compression spring and, with its end opposite the hole, rests against an abutment integrally moulded on the carrying element.
7. Industrial truck substantially as hereinbefore described with reference to and as shown in the accompanying drawings.
i
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0208371A GB2387367B (en) | 2002-04-11 | 2002-04-11 | Industrial truck |
| DE2003114796 DE10314796A1 (en) | 2002-04-11 | 2003-04-01 | Industrial truck with a pulley that can be moved vertically against spring force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0208371A GB2387367B (en) | 2002-04-11 | 2002-04-11 | Industrial truck |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB0208371D0 GB0208371D0 (en) | 2002-05-22 |
| GB2387367A true GB2387367A (en) | 2003-10-15 |
| GB2387367B GB2387367B (en) | 2005-04-06 |
Family
ID=9934679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB0208371A Expired - Fee Related GB2387367B (en) | 2002-04-11 | 2002-04-11 | Industrial truck |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE10314796A1 (en) |
| GB (1) | GB2387367B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112194068B (en) * | 2020-11-30 | 2021-03-26 | 山东睿思机械设备有限公司 | Elevator with anti-falling mechanism |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2021509A (en) * | 1978-04-07 | 1979-12-05 | Orenstein & Koppel Ag | Tensioning device for tensioning hydraulic hoses on lift masts of fork lift trucks |
| US4553638A (en) * | 1984-07-13 | 1985-11-19 | Allis-Chalmers Corporation | Hose tensioning device |
| US4683987A (en) * | 1984-11-12 | 1987-08-04 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Hydraulic power piping unit for a lift truck |
| JPH043799A (en) * | 1990-04-19 | 1992-01-08 | Toyota Autom Loom Works Ltd | Hose supporting device for fork-lift |
-
2002
- 2002-04-11 GB GB0208371A patent/GB2387367B/en not_active Expired - Fee Related
-
2003
- 2003-04-01 DE DE2003114796 patent/DE10314796A1/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2021509A (en) * | 1978-04-07 | 1979-12-05 | Orenstein & Koppel Ag | Tensioning device for tensioning hydraulic hoses on lift masts of fork lift trucks |
| US4553638A (en) * | 1984-07-13 | 1985-11-19 | Allis-Chalmers Corporation | Hose tensioning device |
| US4683987A (en) * | 1984-11-12 | 1987-08-04 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Hydraulic power piping unit for a lift truck |
| JPH043799A (en) * | 1990-04-19 | 1992-01-08 | Toyota Autom Loom Works Ltd | Hose supporting device for fork-lift |
Also Published As
| Publication number | Publication date |
|---|---|
| DE10314796A1 (en) | 2003-10-30 |
| GB0208371D0 (en) | 2002-05-22 |
| GB2387367B (en) | 2005-04-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20150411 |