CN1259229C

CN1259229C - Forklift truck

Info

Publication number: CN1259229C
Application number: CN 03155580
Authority: CN
Inventors: 布鲁诺·蒂姆; 恩斯特－彼得·马根斯
Original assignee: Jungheinrich AG
Current assignee: Jungheinrich AG
Priority date: 2002-08-31
Filing date: 2003-08-29
Publication date: 2006-06-14
Anticipated expiration: 2023-08-29
Also published as: DE50302318D1; DE10240275B3; EP1394098B1; JP3947507B2; EP1394098A2; CN1495125A; JP2004091214A; EP1394098A3

Abstract

A forklift, comprising: a longitudinal axis; the driving part can be driven to walk on the ground by one or two front wheels and two rear wheels, the rear wheels are supported on wheel arms fixed on the driving part, a cab is arranged in the driving part, a seat and a control element are arranged in the driving part, the sight direction of a driver is transverse to the longitudinal axis of the forklift when the driver sits on the seat to drive, the loading part is provided with a support column capable of moving along the longitudinal axis, a fork arm or similar components are driven along the support column and guided, various drives of the forklift are powered by batteries, and the batteries are composed of two parts and are respectively arranged in battery bins standing on the wheel arms. The battery compartment is arranged on the wheel arm and supported by the wheel arm.

Description

Fork truck

Technical field

The present invention relates to a kind of fork truck (reach truck).

Background technology

Fork truck is that its pillar is suitable for by suitable support with actuating device and the fork truck that can relative drive division moves forward and backward as can be known.Drive system and each assembly all are installed on the drive division.Drive division is installed with two parallel wheel arms, and one or two wheel is being supported in the rear end of wheel arm.Drive division is driven by one or two wheel that drives by power system, and driven wheel also can rotate around a vertical axis, and rotational angle is controlled by steering swivel system.This can make fork truck drive along its longitudinal axis, also can be along drive curve, or do the operation of pivot stud.The latter only is suitable for the four-wheel fork truck, and the support wheel of also this as can be known fork truck back can turn to.

This fork truck can be learnt from patent DE198 46 000 A1.The special feature of this known fork truck is that battery pack is easy to pull down or load onto.This fork truck provides power by battery as can be known.Battery is charging often.Usually will charge from the battery that fork truck is pulled down, change the battery of newly substituting the bad for the good simultaneously, just can the interrupt operation fork truck.The battery pack of this fork truck can be pulled down along the fork truck longitudinal axis.The battery pack of forklift seat below can be made up of the battery that polylith separates.Each battery pack can be passed pillar from loading part one side of fork truck and be pulled down.

It is exactly so-called by path width that this fork truck has a characteristic dimension, and it is determined that by two radiuses one is the radius that relief angle determined that is extended to drive division by the center of front axle; Another is the radius that center from front axle extends to one jiao of its supports when pillar is in retrieving position Pallet.The path width that passes through of fork truck has determined the necessary width that passes through the path between adjacent thing frame (rack), and obviously this size should be as much as possible little.

Summary of the invention

Purpose of the present invention is improved fork truck exactly makes it reduce by path width.

Feature by following technical proposal has just reached this purpose.

According to the present invention, a kind of fork truck is provided, comprising: a longitudinal axis; One drive division, drive division lean on one or two front-wheel and two trailing wheels can be driven on the ground and move, and trailing wheel is supported on the wheel arm that is fixed on the drive division; Driving compartment on the drive division, driving compartment has a seat and operating element, and its direction of visual lines becomes horizontal with the longitudinal axis of fork truck when carrying out driver behavior on the seat when chaufeur is sitting in; One loading station, loading station have a pillar that can move along longitudinal axis; One is directed to and driven yoke along pillar; For the actuating device of fork truck provides the battery of power, battery partly is made up of two batteries, and two batteries parts are contained in respectively in the battery compartment, and each battery compartment is all taken turns on the arm and by the wheel arm one and supported.

Partly form by two batteries in the battery compartment by being placed on for battery among the present invention.As already mentioned, the forklift battery separated into two parts, and battery is installed in the battery compartment of corresponding size is known.Special feature of the present invention is that each battery compartment all is supported on the wheel arm.

Because battery is installed on the wheel arm rather than is installed on the drive division, just drive division can be done very short.The size of driving compartment can not be reduced under the size value by the driving compartment of the reason of ergonomics decision.Therefore, the size of driving compartment has just determined size and the pillar of withdrawal and the space between the drive division rear end of drive division.Between the retracted position of pillar and drive division, reserved a central space specially like this, and this space is necessary, the right arm of chaufeur can be placed on the jib of this central space top.

The distance of wheel between the arm is by the lateral dimension decision of Pallet.Therefore, battery compartment flushes adaptably with the interior edge of wheel arm.Monoblock battery has standard size in the battery pack, and the transverse width than battery compartment is little usually for the transverse width of wheel arm.Therefore, the size of the battery compartment among the present invention will extend beyond the wheel arm of stock size.Be the width of wheel arm to be hanked to allow battery compartment be supported on fully above the wheel arm according to one embodiment of present invention.This makes the width of fork truck increase some, yet fork truck is not restricted in the locomotivity of narrow space.Being in a retracted position the Pallet that puts nonstandard size between the hour wheel arm at pillar can be restricted.

The length of battery compartment is preferably such among the present invention, and the antetheca and the drive division of battery compartment are adjacent, and the other end extends to the wheel arm basically the opening of the position of support wheel is installed.

Battery compartment can be designed to flat square box.According to one embodiment of the present of invention, the upper side of battery compartment is crooked shape evagination, and this makes fork truck constitute lucid and lively profile.

Once mentioned fork truck of the present invention and leave a clearance envelope between the drive division below pillar retracted position and the jib, this clearance envelope can allow driver's seat rotate around a vertical axis, the observation place of chaufeur when operating to improve stacking yard.Because above-mentioned various reasons, the width of this clearance envelope is that the common seating position by chaufeur satisfies the needs of ergonomics and definite.Thereby this space is big inadequately, can not allow the seat half-twist, and this angle is the optimal position of stacking yard operation., seat just can forward on this position when pillar outwards moves away a little.Thereby the rotation of seat in one embodiment of the invention is related with the position or the displaced phase of pillar, if just seat can rotate back into initial position automatically between the wheel arm so that pillar is withdrawn into.Among this embodiment of the present invention, if the position of pillar allows, chaufeur is rotating seat arbitrarily.As long as note when pillar is withdrawn, not bumping, in case and close drive division to a key point of pillar automatically seat is rotated back into its reference position.

Can visualize between pillar and seat rotate the replacement scheme that is mutually related is provided, promptly when pillar outwards shift out one be scheduled to stroke the time seat turn to automatically near 90 °.This displacement and the interlock between the seat rotation at pillar can be by a suitable driving system realization.But, preferably provide one to be used for the independent actuating device that seat rotates, it can link with the drive system that is used for pillar.

In any case, rotating seat makes fork truck more meet the requirement of ergonomics.

Illustrate in greater detail the present invention with specific embodiment below.

Fig. 1 is the transparent view of fork truck of the present invention.

Fig. 2 is similar to Fig. 1 but has made the transparent view of the fork truck of the present invention changed.

Fig. 3 is the scheme drawing of Fig. 2 fork truck.

Fork truck shown in Fig. 1 and Fig. 2 transparent view mainly is known aspect structure member.It comprises a drive division 10, and drive division 10 has been installed in the appropriate driving device and the assembly of various operation fork trucks in a housing 12.Driving compartment (driver place) 14 is arranged in the drive division 12, in seat 16, bearing circle 18 and multiple operating control and the various display instrument that is only demonstrated by backrest arranged, just be not described in detail.The arrangement of seat 16 makes driver vision become laterally with the longitudinal axis of fork truck, so that chaufeur can be supported in its right ancon on the jib (armrest) 20.

As common fork truck, drive division 10 is bearing at least one drive wheel that does not show.

Parallel wheel arm

22,24 is installed on the drive division 10, and

wheel arm

22,24

support wheel

26,28 in its end support.Pillar 30 is between the wheel arm 22,24.Repeated no more the detailed structure of pillar herein.In conjunction with Fig. 1 and Fig. 2 as can be seen pillar can the position that moves out shown in Fig. 1 with as Fig. 2 mobile between the position of the withdrawal between the wheel arm 22,24.The drive system of pillar does not show yet.Sliding part (slide) 32 can rise or descend by suitable lifting device driving and along pillar.Sliding part 32 is supporting

yoke

34,36, and

yoke

34,36 is suspended on the sliding part 32, and the rear portion of yoke and the front surface of sliding part are bonded together.This also is known.

More flat rectangular cell storehouse 40,42 is positioned on the

wheel arm

22,24 relatively, and its width is the same with the width of wheel arm 22,24.

Wheel arm

22,24 contiguous drive division parts have the cover plate 44,46 that stretches upwards, and make battery compartment by lateral fixation.One end of battery compartment 40,42 is in abutting connection with the housing 12 near drive division.Each battery compartment 40,42 all is equipped with a battery, and the battery sum is added up is enough to guarantee the supply current of fork truck.The connection of battery compartment 40,42 does not show in detail.Can understand that the needs of fork truck satisfactory operation must be fully satisfied in this connection.

The difference of Fig. 2 and Fig. 1 only is the battery compartment 40a among Fig. 2, and it is different that 42a and the battery compartment among Fig. 1 are compared profile.Battery compartment

upper surface

48,50 tilts towards

support wheel

26,28, and this inclination is to realize with the curve of arc.By this

inclination battery compartment

40a, 42a has shown graceful profile.Even if this profile has safety when running into people's case of collision.Battery compartment 40a, the spatial content of battery compartment 40,42 is identical among 42a and Fig. 1.

Fig. 3 is the scheme drawing of fork truck shown in Figure 2, and identical part is indicated with identical Reference numeral.Fig. 3 shows that

battery compartment

40a and 42a are wideer than

wheel arm

22,24 generally.In the middle of practical structures, use the cover plate of

wheel arm

22,24, cover plate makes

battery compartment

40a, and 42a stands in above the

wheel arm

22,24 fully.This can find out from Fig. 1 and 2.

Fig. 3 is similar to Fig. 2, and pillar 30 is to take in fully between the wheel arm 22,24.Place the Pallet of a standard size (80 * 1200) on the unshowned yoke.Drive division 10 is short especially as can be seen, but pillar can not be fully retracted to drive division and contacts, and leaves clearance envelope 52.This clearance envelope is very important to reserving enough spaces for the ancon of chaufeur.Across (Fig. 2), the space of jib below also can be utilized as described in following this clearance envelope by a jib 20.

The profile at the pillar 30 shown in Figure 3 and the rear portion of

yoke

34,36 marks with number 54.The length that has as can be known at the fork truck of the Pallet of position shown in Figure 3 has determined the needed space of fork truck, i.e. travelling performance in as far as possible little space.The locomotive that this performance ratio generally is contained in battery in the drive division traditionally is obviously much higher.This is with must to leave clearance envelope 52 irrelevant, and its width is 200 millimeters in this example.

What the decision fork truck used is to pass through path width.This can be determined by radius R 1 and R2.Two radiuses are connected (R1) to angular vertex outside the intersection point of fork truck longitudinal axis that is designated as M in Fig. 3 and front-wheel axis 56 and Pallet one respectively, perhaps are connected (R2) with an outer angular vertex of drive division 10.R1 and R2 sum add that an installation dimensions has just obtained by path (passage way) width, and being somebody's turn to do of fork truck shown in having mentioned above significantly reduce than traditional fork truck by path width.The width value B of diagram fork truck because the reason that illustrates than traditional fork truck more greatly, but this value has little significance to the saving operational space.When loads was wider than Pallet 50, loads can not be put between the

wheel arm

22,24, but it must take place in yoke position shown in Figure 1.

Seat 16 can rotate around a vertical axis as illustrated in fig. 1 and 2.This rotation can manually be rotated by chaufeur, also can adopt the drive system rotation.When pillar during in position shown in Fig. 2 and 3, the seat certain angle that can rotate around the axis, rotation axis marks with number 58 in Fig. 3.Clearance envelope 52 provides the limited spatial accommodation of chaufeur shank.Ray 60 indicates the rotational angle α 1 of the seat of rotation among Fig. 3.The driver vision direction is vertical with the longitudinal axis of fork truck on initial position.It becomes 90 °-α 1 by rotating seat, and has improved the observation to lade, more meets ergonomics.After pillar was away from drive division, seat can rotate to fully by the indicated angle [alpha] 2 of ray 62, and this angle can equal or exceed 90 °.Driver vision direction half-twist is beneficial, can improve the observation condition of chaufeur when stacking operation on the Pallet, and chaufeur needn't be forced to rotate shoulder or rotary head.

By expressing a proper device among the figure position of seat 16 and pillar 30 is coupled to each other.Shown in Figure 3 as Fig. 2, when pillar is withdrawn into the final position, pays special attention to seat and must in time rotate back into initial position.Between seat and pillar, also can adopt an automation to connect, to obtain required seat position.

Claims

1. a fork truck comprises: a longitudinal axis; One drive division, drive division lean on one or two front-wheel and two trailing wheels can be driven on the ground and move, and trailing wheel is supported on the wheel arm that is fixed on the drive division; Driving compartment on the drive division, driving compartment has a seat and operating element, and its direction of visual lines becomes horizontal with the longitudinal axis of fork truck when carrying out driver behavior on the seat when chaufeur is sitting in; One loading station, loading station have a pillar that can move along longitudinal axis; One is directed to and driven yoke along pillar; For the actuating device of fork truck provides the battery of power, battery partly is made up of two batteries, and two batteries parts are contained in respectively in the battery compartment, and each battery compartment is all taken turns on the arm and by the wheel arm one and supported.

2. fork truck as claimed in claim 1 is characterized in that the housing rear wall on battery compartment side and the drive division is adjacent.

3. as the fork truck of claim 1 or 2, it is characterized in that battery compartment extends to the position at wheel place on the wheel arm.

4. as the fork truck of claim 1 or 2, it is characterized in that the upper side of box-shaped battery compartment tilts to the wheel arm, have an inclined-plane.

5. fork truck as claimed in claim 4 is characterized in that the battery compartment upper side is crooked shape evagination.

6. as the fork truck of claim 1 or 2, it is characterized in that seat can rotate around a vertical axis.

7. fork truck as claimed in claim 6 is characterized in that seat can be locked in each pivot region.

8. fork truck as claimed in claim 6 is characterized in that being provided with device of rotation driving for seat.

9. fork truck as claimed in claim 6 is characterized in that the rotation of seat is related with the position or the displaced phase of pillar, so that seat rotates back into reference position automatically when pillar is recovered to initial position.

10. fork truck as claimed in claim 9 is characterized in that seat allows the position of maximum rotation to be associated with the position of pillar.