FLOOR CONVEYANCE WITH LATERALLY ENTNEHMBARER BATTERY

Invention concerns floor conveyance with vehicle frames, which lateral withdrawal opening for manifold exhibits, and device to lateral battery withdrawal, comprehensively at least battery photograph device, hydraulic drive device and guidance, whereby the battery photograph device is movable by means of the hydraulic drive device and the guidance between an operating position, in which the battery photograph device is within the vehicle frame, and a battery change position, in which the photograph device is outside of the vehicle frame,

Floors conveyance, in particular counterweight fork-lift trucks, are particularly in recent time frequently implemented with a lateral battery withdrawal opening. Often it is with the operators of fork-lift trucks usually, manifolds or another exchangeable power supply mechanism, for example a gas cell power pack to transport by means of a crane. In order to make this possible with fork-lift trucks with a lateral battery withdrawal opening, the manifold must be moved first completely from the battery box. Only then the manifold can be attached and raised to the crane. Similarly for this the manifold can be moved by means of the crane only beside the withdrawal opening during inserting into the battery box. In order to then move the manifold in horizontal direction by the withdrawal opening into the battery box, it requires a servomechanism.

Servomechanisms, which permit it to move the manifold without help of a fork elevating truck platform in horizontal direction into the battery box inside or from the battery box are while stationary the technology already well-known. In the DE 102 40 854 A1 is for example descriptive to arrange down in the battery box an extendable roller race. After taking the roller race off the manifold on the roller race can be rolled completely from the battery box.

A further possibility consists of placing and with this device for example along a linear guidance into the vehicle inside the manifold on a photograph device and/or out-approaching. This movement requires large energy expenditure due to the substantial weight of the manifold, why for this mostly independent drive devices are intended.

As drive device for the mostly mainly linear movement of the battery from thrust hydraulic cylinders are very well suitable. These can be attached to mostly the hydraulic system existing in floors conveyance and be headed for by a control position of the floor conveyance. In order to make both a bringing in and a driving possible of the battery out, the cylinders must be double acting.

If the photograph device is particularly far laterally driven out, i.e. so far that these and the battery stored on it practically completely outside of the vehicle outline to be, the Ausschub of a simple hydraulic cylinder, which can correspond maximally to the approximate length of the cylinder, is not sufficient usually. For this case for example a telescopic cylinder or a combination of several cylinders use can find.

Double acting telescopic cylinders are very aufwändig constructed and at least one hydraulic packing are arranged relative to the vehicle frame mobile and must over internal lines or hose connectors be attached.

With a structure from two or more double acting cylinders at least one cylinder is no longer stationary in relation to the vehicle frame and must be attached from there likewise aufwändig and error-prone, for example over a hose, to the hydraulic supply of the vehicle.

When driving the battery out this may besides not electrically from the vehicle is separated, since also for the vehicle-internal hydraulic system no more energy is then available. Therefore are very long battery cables necessary, which unnecessarily need place and are damage susceptible.

The available invention is the basis the task to make a floor conveyance available in accordance with the generic term of requirement 1 which exhibits a simply developed and reliable device to the lateral battery withdrawal. This task is solved according to invention by the fact that approximately stationarily to the relative to the vehicle frame mobile hydraulic drive device at least one device is to supply of hydraulic energy for the hydraulic drive device intended. Devices for the supply of hydraulic energy can be for example pumps, accumulators or compressed gas cartouches. to the hydraulic drive device to the order, escapes flexible is placed to lndem hydraulic energy approximately stationarily in relation, lengthen or positionvariable elements such as hoses. The device is simpler to manufacture and less error-prone.

It is particularly favourable, if the device covers one hydraulic pump for the supply of hydraulic energy at least. Hydraulic pumps are particularly suitable, in order to make hydraulic energy available at little expenditure in sufficient quantity.

It is of advantage further, if the device covers one electric motor for the supply of hydraulic energy at least. Electric motors are suitable as drives for hydraulic pumps well, are simpler compared with a hand operation for the control person to handle and can very well in automated processes be used.

It is appropriate, if the device covers one hydraulic tank for the supply of hydraulic energy at least. Tanks serve the storage of the hydraulic fluid.

It is of advantage special, if electric motor and hydraulic pump are designed as construction unit. A such arrangement saves fitting space.

Is likewise favourable, if hydraulic tank and hydraulic pump are designed as construction unit. Thus both fitting space is saved and the expenditure for hydraulic lines between tank and pump is reduced. Thus the fault liability sinks.

Further it is of advantage completely special, if electric motor, hydraulic tank and hydraulic pump are designed as construction unit. Thus a very compact building method is obtained and saved with defects by simple exchange of the complete building group the loosening of numerous connections

It is of advantage special, if the drive device of the lateral battery from thrust covers at least one hydraulic cylinder, preferably two moving in opposite directions arranged double acting cylinders. Hydraulic cylinders are particularly well suitably around linear movements, as for example a lateral battery from thrust to propel

Further it is appropriate, if the guidance is designed as telescopic slider, whereby a basic element of the guidance is rigidly connected with the vehicle frame, is movably led a first telescope element at the basic element and a second telescope element at the first telescope element is movably led and the photograph device is fastened to the second telescope element. Telescopic execution guidance with two telescope elements ensures necessary driving out length guidance, in order manifold between position, in which it is completely within the floor conveyance and a further position, in which it is completely outside of the floor conveyance, move to be able. The basic element, the first telescope element and the second telescope element can in each case be in or multipart implemented, whereby in particular several parts, which are in longitudinal direction of the floor conveyance from each other beabstandet and is usually always synchronously moved, when is belonging together regarded.

It is particularly favourable, if the two moving in opposite directions arranged double acting cylinders on the first telescope element are arranged. With the Ausschub of the battery both the second telescope element and the basic element are induced relatively to the first telescope element. The pistons of the two moving in opposite directions arranged double acting cylinders move thus into a direction the first telescope element relative to the basic element and in the direction moving in opposite directions the second telescope element relative to the first telescope element, while the cylinder is connected with the first telescope element and pushes away to it. Thus a space-saving and stable arrangement results.

It is likewise particularly favourable, if the device is arranged for the supply of hydraulic energy on the first telescope element. This is a particularly simple arrangement, with that the device for the supply of hydraulic energy stationarily to the hydraulic cylinders to be arranged can and with these is connected by short, being certain lines.

Further it is appropriate, if moving in opposite directions arranged the double acting cylinders are arranged in a common housing. Thus a space-saving structure is obtained and the points of attack the cylinder seaweeds to lie perpendicularly to the cylinder axle regards close together, whereby torsional stresses in the arrangement are minimized.

Further advantages and details of the invention are more near described on the basis the remark example represented in the schematic figures. Shows

Figure 1

a fork-lift truck as example of a floor conveyance according to invention in side view,

Figure 2

the guidance for the photograph device from downside seen.

Figure 1 shows a fork-lift truck according to invention in side view. The basic element of the fork-lift truck is a vehicle frame 1. at the fork-lift truck is a stroke stand 2 with one upward and down movable lifting attachment 3 fastened in front. At the rear end of the fork-lift truck a rear weight 4. is between them is a driver place 14.

LN a free space of the vehicle frame is a laterally open battery box 7, in which a manifold 5 is arranged. The manifold 5 rises on a photograph device 8, which by means of a telescopic guidance 6 in lateral direction from the battery box 7 can be moved out according to invention. The guidance 6 covers a basic element 10 connected with the vehicle frame 1, in which a first telescope element 11 is adjustably led. A second telescope element 12 again is adjustably led in the first telescope element 11. The second telescope element 12 forms 8 a common construction unit with the photograph device.

At the photograph device 8 - or in another possible execution form directly at the second telescope element 12 - an extendable support 13 is fastened. As long as the photograph device 8 is within the vehicle frame 1, the support 13 brought in and is within the vehicle outline. As soon as the support 13 is outside of the vehicle frame 1, it drives automatically and supports the Gewichtskraft of the manifold 5 directly at the lane 9 out off. At the lower end that. Support 13 is a role, which unreels 12 on the lane 9 during the driving out movement of the second telescope element.

Figure 2 shows the guidance for the photograph device in partly taken off position. The basic element 10, which is not represented in its complete length, is at the left end of the representation. The basic element 10 is not movable at the vehicle frame (Fig. 1, pos. 1) fastened. The first telescope element 11 is adjustably led at the basic element 10 and the second telescope element 12 at the first telescope element 11.

Further to recognize the support is 13, which is fastened to the second telescope element 12 and this supports 9 at the lane. The support 13 carries then at least a part of the Gewichtskraft of a manifold present at the photograph device 8.

Firmly with the first telescope element. a combination of two moving in opposite directions arranged double acting hydraulic cylinders 15a, 15b is connected for 11. The combination of the cylinders 15a, 15b in a common housing 16 makes a particularly space-saving arrangement possible. To driving the photograph device 8 out the pistons of the two cylinders 15a, 15b in direction moving in opposite directions are induced and moved over the cylinder barrel 17b the first telescope element 11 by the basic element 10 away as well as over the cylinder barrel 17the second telescope element 12 by the first telescope element 11 away outward. In addition that is parallel switched the withdrawal opening turned port 18a of the cylinder 15a that the withdrawal opening turned away port 19b the cylinders of the 15b. Likewise that is parallel switched the withdrawal opening turned away port 19a of the cylinder 15a that the withdrawal opening turned port 18b the cylinders of the 15b.

The arrangement shown is independent of the driving out sequence of the cylinders 15a, 15b, so that cylinder 15a, 15b, which experiences the clearly slighter resistance, accomplishes an out and/or a bringing in movement. If resistance conditions turn around, for example also, if the moving piston starts its movement concerned at the last detent, the other piston. By the coupling of the cylinders 15a, 15b to the first telescope element 11 it is insignificant for the driving out movement, for which the cylinder 15a, 15b drives out first.

The supply of the cylinders 15a, 15b with hydraulic fluid is made by a construction unit 20, which covers a combination of hydraulic tank 21, hydraulic pump 22 as well as an electric motor 23 for the drive of the hydraulic pump 22. The construction unit 20 and a valve block 26 are headed for over here a not represented controller, which is arranged in the floor conveyance, over an interwiring 24. The valve block 26 steers the supply of the cylinders 15a, 15b with hydraulic fluid. The power supply of the construction unit 20 is made likewise by cable 25 from the floor conveyance.

By here a not represented control element within the range of the driver place 14 out the retracting and driving out extending of the guidance 6 are steered. Thus it is guaranteed that the control person is in a range, where she cannot come into contact with the driving out guidance 6.

As a control person signals a driving out desire, the construction unit 20 is activated as well as opened in the valve block 26 the lines 27 for the connections 18b, 19a. The photograph device 8 drives out to a final position is reached. For bringing the photograph device 8 in on an appropriate signal the construction unit 20 is likewise activated and opened in the valve block 26 the lines 28 for the connections 18a, 19b, until the photograph device 8 reached its final position in the floor conveyance. By the arrangement of the cylinders 15a, 15b and the construction unit 20 on the first telescope element 11 as well as the direction of action of the 17a, 17b can be done to the cylinder seaweeds without mobile hydraulic connections.

Of course also different arrangement forms of the invention are conceivable. So for example the supply of the construction unit 20 with electricity can take place directly from the battery 5 present at the photograph device 8. Likewise the transmission can take place from control instructions in place of over an interwiring 24 also by means of wireless data communication, so that no interwiring between the telescope element 11 and the framework 1 of the floor conveyance must exist, which reduces the fault liability by damages of the cables 24, 25. Besides so an operated by remote controlness of the withdrawal device is for example ensured to semiautomatic withdrawal station at one full or.

In place of the arrangement of the hydraulic cylinders 15a, 15b in a common housing 16 just as different arrangement forms are conceivably, as for example two separately arranged cylinders. Likewise can be contained in the common housing 16 in addition, connecting cables or the valve block 26, so that only one hydraulic line of the construction unit is 20 to the common housing 16 necessary. The valve block 26 can be implemented on the other hand in addition, than part of the construction unit 20. In place of a construction unit 20 in the hydraulic pump 22, hydraulic tank 21 and electric motor 23 in summary is both individual, can occur these construction units and in combinations at will summarized. Also a regulation of the driving out sequence of the cylinders 15a, 15b by appropriate organization of the valve block 26 as well as the lines 27, 28 is conceivable.