DE102018124575B4 - Movable loading lift with remote-controlled swivel locking unit for the swivel castors - Google Patents

Abstract

A movable loading lift (1) is used to pick up, move, raise and lower goods and has a swivel locking unit (20) for its two front steering rollers (7). The swivel locking unit (20) has a remote control element (21) which is arranged in the area of the rear (5). The swivel locking unit (20) has a locking element (25) which works together with a counter locking element (30) of the front swivel castor (7) and/or the rear swivel castor (9). The swivel locking unit (20) is designed and arranged in such a way that the locking element (25) can be moved between an engagement position and a release position by actuating the remote control element (21).

Description

TECHNICAL FIELD OF THE INVENTION

The invention relates to the technical field of movable loading lifts for picking up, moving, lifting and lowering goods.

Such movable loading lifts are industrial trucks and are used to transport goods (not people) horizontally across the floor using rollers. In addition, they have a lift unit with a mast and a receiving device for picking up the goods. The goods picked up on it are raised and lowered using the lift unit. Such movable loading lifts are mostly used in industrial manufacturing companies, warehousing and workshops.

STATE OF THE ART

From the German patent application DE 10 2015 115 392 A1 is a movable loading lift for picking up, moving, lifting and lowering goods. The loading lift has a chassis with a front, viewed in the forward direction of travel, and a rear, viewed in the forward direction of travel. A lift unit with a mast and a receiving device for picking up the goods is arranged on the chassis. A motor is connected to the lift unit. In the area of the rear, an operating unit for moving the receiving device by means of the motor in the vertical direction along the mast for raising and lowering is arranged. At least two front swivel castors are arranged on the chassis in the front area and at least two rear swivel castors in the rear area. The ability of the swivel castors to pivot about the vertical axis can be blocked or at least restricted by a mechanism.

A swivel castor with a directional lock is from the German utility models DE 71 29 463 U and DE 82 12 074 U1 known. The swivel roller has a locking element and a locking counter element, which are movable between an engagement position and a release position.

DE 20 2010 006 436 U1 concerns a non-generic trolley with a movable platform without any lifting function. A simplified condition for directional locks of swivel castors should be made possible on the trolley, in that it should be possible to lock the casters either by means of a foot-operated pedal or by means of a handle. An actuation force generated in this way for locking can be transmitted using a cable or a push rod. The cable pull and the push rod actuate a slide that is displaceably mounted on the platform and which locks the rollers in a form-fitting manner so that the direction of the rollers can be determined.

DE 91 03 536 U1 also concerns a non-generic trolley without a lifting function. Here, the rollers are locked by means of a hydraulic actuation path, whereby a pressure medium pump for actuating the locking of the rollers can be designed as a hand pump, foot pump or drawbar pump.

OBJECT OF THE INVENTION

The invention is based on the object of providing a movable loading lift with which goods can be transported easily and flexibly both safely over routes and positioned precisely at the destination.

SOLUTION

The object of the invention is achieved according to the invention with the features of the independent patent claims.

Further preferred embodiments according to the invention can be found in the dependent patent claims.

DESCRIPTION OF THE INVENTION

The invention relates to a movable loading lift for picking up, moving, lifting and lowering goods. The loading lift has a chassis with a front, viewed in the forward direction of travel, and a rear, viewed in the forward direction of travel. A lift unit with a mast and a receiving device for picking up the goods is arranged on the chassis. A motor is connected to the lift unit. In the area of the rear there is an operating unit for moving the loading lift and for moving the receiving device by means of the motor in a vertical direction along the mast for lifting and lowering. At least one front swivel castor is arranged on the chassis in the front area and at least one rear swivel castor is arranged in the rear area. The movable loading lift has a swivel locking unit for the front swivel castor and/or the rear swivel castor. The swivel locking unit has a remote control element which is arranged in the area of the rear. The swivel locking unit has a locking element for the at least one front swivel castor and/or the at least one rear swivel castor, which works together with a locking counter element of the front swivel castor or rear swivel castor. The swivel locking unit is designed and arranged that the locking element can be moved between an engagement position and a release position by actuating the remote control element.

With such a movable loading lift, the operator stands behind the rear of the loading lift and operates it with his hands using the control unit arranged there. The control unit is used for motor-driven lifting and lowering of the receiving device along the mast of the lift unit. However, the operating unit can also have one or more mechanical handles, which are used to generate the actual movement of the loading lift by the operator pushing or pulling on the handles. In this case, the loading lift does not have a motor-driven travel drive. However, it is also possible for the loading lift to have such a motor-driven drive and for the travel movement to be generated without muscle power.

The movable loading lift is used in particular in logistics and for the transport and handling of goods that have a mass in the range of around 30 to 600 kg. It is a lifting aid for such goods and not a construction vehicle, such as a crane or even a heavy-duty crane. A typical application is the handling of wheels when installing them on the motor vehicle.

The motor connected to the lift unit is in particular an electric motor. This is powered by a rechargeable battery or accumulator.

The component referred to in this application as a “front swivel castor” or “rear swivel castor” is not only the roller body that can be rotated to generate the travel movement of the movable loading lift, but also the cage surrounding it, the bearing, the fastening flange, etc. One could therefore also speak of the “front swivel castor unit” or “rear swivel castor unit”. However, for the sake of simplicity, the term “front swivel castor” or “rear swivel castor” is used in this application. The swivel castor can also be a steerable wheel.

The new movable loading lift has a central swivel locking unit or several central swivel locking units for the front swivel castor and/or the rear swivel castor. In contrast to directional locks of the prior art, the switching of the swivel castor to a fixed castor and vice versa does not take place directly on the respective castor, but at a distance from it. If there are several front swivel castors and they can be switched, the switchover preferably takes place together and at the same time for the front swivel castors. If there are several rear swivel castors and these can be switched, the switchover preferably takes place together and at the same time for the rear swivel castors. If both the front swivel castors and the rear swivel castors are switchable, the switchover can either take place together and at the same time for the front swivel casters and the rear swivel casters or separately.

In addition, the actuation takes place via at least one remote control element, which is arranged within reach of the normal area of residence of the operator of the movable loading lift. The operator's living area is the area of the rear of the loading lift and its surroundings. To be more precise, the operator stands behind the rear of the loading lift when operating it. The operator therefore does not have to move forward to the front swivel casters in order to switch from the freely pivoting position to the locked position and vice versa in order to operate the front swivel castors. This means that switching can be done easily and conveniently while driving with the movable loading lift. If the rear swivel castors are designed to be switchable, this switchover is also easy.

The swivel locking unit has several components that can be mounted on different parts of the loading lift. The swivel locking unit is at least also arranged on the chassis, the mast or the operating unit. The swivel locking unit is therefore not exclusively part of the front swivel castors or rear swivel castors.

In the operator's operating position, the operator is at the maximum distance from the front castors. If the movable loading lift is to be moved over a comparatively long distance, for example to drive to the location where an item to be transported is located, the loading lift can be positioned precisely by simultaneously pivoting both the front swivel castors and the rear castors. Swivel castors not required. Such a simultaneous pivoting is actually a hindrance when driving straight ahead and makes it more difficult and delays reaching the destination. The same also applies if the goods to be transported have already been picked up and are now being taken to their new destination.

The new central swivel locking unit for the front swivel castor(s) and/or the rear swivel castor(s) enables the operator to adjust the swivel castor(s) in a simple and comfortable manner without leaving his location behind the rear of the loading lift, that they assume their intervention position. If then the respective locking element of the swivel locking unit engages in the associated locking counter element of the respective swivel castor (“engaging position”), the swivel castors can no longer pivot about the vertical axis and thus make it easier to drive straight ahead. To achieve the required cornering, the pivoting of the other swivel castors is sufficient.

When the operator has reached the location where more delicate handling of the goods is required, he can release the castor(s) again in the same simple manner by operating the remote control from his position behind the rear of the loading lift. If two front swivel castors are present and designed to be switchable, they are released together and at the same time so that they can rotate again about their vertical axes. The same applies to switchable rear swivel castors. With the now four freely swiveling swivel castors, the loading lift can be positioned precisely and sensitively. The loading lift can also be moved sideways.

The movable loading lift can have at least one front swivel castor, which can be temporarily converted into a fixed castor using the swivel locking unit. This is the case for a first variant of the invention with a centrally arranged front leg. For a second variant of the invention, there can also be two front swivel castors that can be switched over in this way, in which case two symmetrically off-center front legs are present. It is possible that the loading lift has more than two front swivel castors - e.g. B. four, six or eight front swivel castors. All or only some of these can be temporarily converted into fixed castors using the swivel locking unit.

If the rear swivel castors can also be temporarily converted into fixed casters, this is done using the swivel locking unit of the front swivel castors or an additional swivel locking unit.

The pivot locking unit moves the at least one locking element between an engaged position and a release position. The release position is to be understood as meaning that the swivel castor can be pivoted about the vertical axis immediately. The same does not necessarily apply to the engagement position. The engagement position can only mean that the locking element has changed its position compared to the release position, but the actual engagement in the sense of preventing the swivel castor from pivoting about the vertical axis (“engaging position”) is not yet present, since the locking counter element of the swivel castor is not in position is located in the engagement area of the locking element.

It is possible that the locking element is not part of the castor. The locking element is instead part of the swivel locking unit and only interacts with the respective swivel castor. The swivel castor can therefore be designed like a normal swivel castor, with the exception of the locking counter element. The swivel castors of a movable loading lift are a wearing part. They can be easily and inexpensively replaced on the new loading lift without having to replace parts of the swivel locking unit. The only part that needs to be replaced is the locking counter element, which, according to the definition of this application, is not part of the swivel locking unit.

It is possible that the respective locking element is not connected to the respective swivel roller. What this means is that there is no fixed connection between the locking element and the respective swivel castor. However, these two parts touch each other to create the engagement position. To dismantle the swivel castor, it only needs to be detached from the chassis and not from the swivel locking unit. This makes assembly and disassembly of the swivel castors possible, which takes no longer than in the prior art without a swivel locking unit.

The locking elements and the respective associated locking counter-elements can be designed and arranged for positive engagement with one another. The engagement position is therefore realized by a positive fit. The locking element can have a protruding part and the locking counter element can have a recessed part. The protruding part can be e.g. E.g. a nose, a heel, a handle, a bolt, a pin, etc. The excluded part can be e.g. B. be a depression, a recess, a groove, etc. However, it is also possible that the opposite situation exists.

The positive connection can be designed in such a way that fixing between the locking element and the locking counter element in different angular positions is possible. Examples of such angular positions are angles of 0°, 45° and 90°. This makes it possible to secure not only straight-ahead travel at an angle of 0°, but also other positions. In the 90° position, forward and reverse travel is prevented. By appropriately adjusting the angle of the rear swivel castors, the load lift as a whole can be secured against unintentional movement.

The swivel locking unit can be designed and arranged in such a way that the locking element does not engage in the associated locking counter element in the release position and the swivel roller can thus be pivoted in the sense of changing the direction of travel of the movable loading lift. In the release position there is therefore no positive engagement between the locking element and the locking counter-element. Either these elements do not touch each other at all or only in such a way that the relative movement is not prevented. The swivel castor can therefore pivot freely about its vertical axis.

The swivel locking unit can be designed and arranged in such a way that the locking element engages in the associated locking counter-element in the engaged position, provided that the swivel roller is in a locking swivel position, and the swivel castor is therefore not pivotable in order to prevent the direction of travel of the movable loading lift from changing. Adopting the engaged position does not necessarily mean that the swivelability of the swivel roller has already been eliminated. For this purpose, the (still) swiveling castor must be swiveled into a locking swivel position. In the example described above of locking at 0° (or 180°), the swivel castor must be brought into this position. This can be achieved simply by the operator moving the loading lift with appropriate pivoting movements, thereby automatically adjusting the locking pivot position of one or both front castors. When this locking pivot position is reached, the actual positive engagement between the locking element and the locking counter element then takes place automatically. This can be caused, for example, by a spring force.

For one proposal of the invention, the swivel locking unit has mechanical connecting means, in particular Bowden cables or linkages, which connect the remote control element to the locking elements. In this way, the actuation signal entered by the operator via the remote control element is transmitted to the locking elements. This can be implemented, for example, in such a way that separate mechanical connecting means are connected to the respective locking element on both sides of the loading lift. These initially separate mechanical connecting means are then preferably guided centrally to the remote control element. However, it is also possible, for example, for this vertical section to be bridged by only one mechanical connecting means, while in the horizontal section there is one mechanical connecting means for each side.

However, according to the invention, the swivel locking unit can also have electrical connecting means, in particular electrical lines, an electric motor and mechanical connecting means, the electrical connecting means connecting the remote control element to the electric motor and the mechanical connecting means connecting the electric motor to the locking elements. In this way, the power transmission between the electric motor and the locking elements takes place mechanically, but without muscle power, while the electric motor is actuated based on an electrical signal triggered by the operator. The electric motor can be e.g. B. be a linear motor. The mechanical connecting means can be e.g. B. flexible cables, wires, etc. or a rigid rod.

According to the invention, the chassis can have two spaced front legs in the area of its front, at the end of which one of the front steering rollers is arranged. The mechanical connecting means are then guided inside through the front legs for a proposal of the invention. This effectively prevents damage to the mechanical connecting means and at the same time creates a tidy visual impression.

The operating command in the sense of moving the locking element between the engaged position and the release position can be triggered not only by the operator, but also by an electrical or electronic control unit. For example, when the recording unit is moved by motor, a switching command can be triggered by the engine control unit at the same time. Another example is the triggering of the release position always when the lift movement is slow and/or close to the component using speed sensors and/or distance sensors.

It is possible for not only the locking elements to be alternately movable between the engaged position and the release position by means of the remote control element or an additional remote control element, but also for the steering rollers to be braked.

The swivel locking unit can be designed in such a way that the engaged position of the locking elements is automatically assumed when the swivel locking unit is in a powerless position. However, it is also possible for the release position to be automatically adopted instead. The mechanical connecting means, e.g. B. the Bowden cable or the linkage, can in particular be connected to a return spring in such a way that the engaged position is automatically assumed when the Bowden cable or the linkage is relieved.

The remote control element is located in the rear area of the loading lift. It can be done on the control unit, e.g. B. be arranged on its handlebars. But it can also be arranged on the chassis, the mast, the battery or another part arranged there.

It is also possible for further levers or switches to be arranged in the area of the remote control element, by means of which additional functions of the movable loading lift can be activated and deactivated. Such additional functions include: B. a warning light or an additional drive.

Both locking elements can be actuated simultaneously using a double pull lever or a Y-cable or Y-linkage. With the double pull lever, by operating the lever, two Bowden cables that are as long as possible are pulled at the same time, each of which leads to one of the locking elements. With the Y connection, the Bowden cable or linkage is divided into two cables or linkages via a distributor in order to control the locking elements at the same time.

If the movable loading lift has a motor, in particular an electric motor, for actuating the swivel locking unit, in particular a traction motor with a spindle or a traction electromagnet can be used. For this purpose, the motor or the electric pull electromagnet can be located directly on the locking element. For a solution according to the invention, the electric motor is located inside the front leg. An adjacent arrangement is also possible. The control takes place via a common electrical signal. Control using an upstream Bowden cable or linkage is also possible. The engine sits z. B. in the housing under the lift unit. This allows the front legs to be made slimmer. In the event of repairs, accessibility is simplified. In addition, you can only use one motor that simultaneously controls two Bowden cables or linkages in the sense of the Y arrangement described above.

Advantageous developments of the invention result from the patent claims, the description and the drawings. The advantages of features and combinations of several features mentioned in the description are merely examples and can have an alternative or cumulative effect without the advantages necessarily having to be achieved by embodiments according to the invention. Without this changing the subject matter of the attached patent claims, the following applies with regard to the disclosure content of the original application documents and the patent: further features can be found in the drawings - in particular the geometries shown and the relative dimensions of several components to one another as well as their relative arrangement and operative connection. The combination of features of different embodiments of the invention or of features of different patent claims is also possible, deviating from the selected relationships of the patent claims, and is hereby encouraged. This also applies to features that are shown in separate drawings or are mentioned in their description. These features can also be combined with features of different patent claims. Likewise, features listed in the patent claims may be omitted for further embodiments of the invention.

The features mentioned in the patent claims and the description are to be understood in terms of their number in such a way that exactly this number or a larger number than the number mentioned is present, without the need for an explicit use of the adverb “at least”. For example, when we talk about a locking element, this is to be understood to mean that exactly one locking element, two locking elements or more locking elements are present. These characteristics may be complemented by other characteristics or may be the only characteristics constituting the product in question.

The reference symbols contained in the patent claims do not represent a limitation on the scope of the subject matter protected by the patent claims. They merely serve the purpose of making the patent claims easier to understand.

BRIEF DESCRIPTION OF THE FIGURES

• 1 zeigt eine perspektivische Ansicht einer beispielhaften Ausführungsform des neuen verfahrbaren Ladelifts schräg von hinten.
• 2 zeigt eine teilweise geschnittene Seitenansicht der Front des Ladelifts gemäß 1 mit einer ersten beispielhaften Ausführungsform der Schwenkarretierungseinheit des Ladelifts in ihrer Freigabestellung.
• 3 zeigt das Detail B aus 2.
• 4 zeigt den Schnitt gemäß der Linie C - C in 2.
• 5 zeigt eine teilweise geschnittene Seitenansicht der Front des Ladelifts wie 2, aber mit der Schwenkarretierungseinheit des Ladelifts in ihrer Eingriffsstellung.
• 6 zeigt das Detail B aus 5.
• 7 zeigt den Schnitt gemäß der Linie C - C in 5.
• 8 zeigt eine teilweise geschnittene Seitenansicht der Front des Ladelifts wie 2, aber mit einer zweiten beispielhaften Ausführungsform der Schwenkarretierungseinheit des Ladelifts in ihrer Freigabestellung.
• 9 zeigt das Detail A aus 8.
• 10 zeigt den Schnitt gemäß der Linie C - C in 8.
• 11 zeigt eine teilweise geschnittene Seitenansicht der Front des Ladelifts wie 2, aber mit der Schwenkarretierungseinheit des Ladelifts in ihrer Eingriffsstellung.
• 12 zeigt das Detail A aus 11.
• 13 zeigt den Schnitt gemäß der Linie C - C in 11.

The invention is further explained and described below using preferred exemplary embodiments shown in the figures.

• 1 shows a perspective view of an exemplary embodiment of the new movable loading lift diagonally from behind.
• 2 shows a partially sectioned side view of the front of the loading lift 1 with a first exemplary embodiment of the swivel locking unit of the loading lift in its release position.
• 3 shows detail B 2 .
• 4 shows the cut along the line C - C in 2 .
• 5 shows a partially cut side view of the front of the loading lift like 2 , but with the swivel locking unit of the loading lift in its engaged position.
• 6 shows detail B 5 .
• 7 shows the cut along the line C - C in 5 .
• 8th shows a partially cut side view of the front of the loading lift like 2 , but with a second exemplary embodiment of the swivel locking unit of the loading lift in its release position.
• 9 shows detail A 8th .
• 10 shows the cut along the line C - C in 8th .
• 11 shows a partially cut side view of the front of the loading lift like 2 , but with the swivel locking unit of the loading lift in its engaged position.
• 12 shows detail A 11 .
• 13 shows the cut along the line C - C in 11 .

FIGURE DESCRIPTION

1-7 show various views of a first exemplary embodiment of a new movable loading lift 1 for picking up, moving, lifting and lowering goods. 1 shows an isometric view of the movable loading lift 1, in which its overall arrangement can be clearly seen.

The movable loading lift 1 has a chassis 2 with a front 4 at the front as seen in the forward direction of travel 3 and a rear 5 at the rear as seen in the forward direction of travel 3.

The chassis 2 has various supports or profiles, which here include two front legs 6 arranged at a distance in the area of the front 4. The front legs 6 extend parallel to the forward direction of travel 3.

Approximately in the front end area of the front legs 6 and thus in the area of the front 4, a front steering roller 7 is arranged on each of the front legs 6. The front swivel roller 7 is not only the roller body that can be rotated to generate the travel movement of the movable loading lift 1, but also the cage that supports it and the parts required for it.

In contrast to a non-steerable fixed castor, a swivel castor is characterized by the fact that it can be pivoted about a vertical axis to enable cornering. In this case, the steering angle is not specified by the motor, but rather is set by the operator as a result of the operation of the movable loading lift 1. But it could also be specified by a motor using a control unit and a drive.

In the area of the opposite rear 5, spaced-apart rear legs 8 are provided. A rear swivel roller 9 is arranged on each of the rear legs 8.

Arranged on the chassis 2 is a lift unit 10 with a mast 11 that extends essentially vertically upwards and a receiving device 12 for receiving the goods. The lift unit 10 is connected to a motor 13, which is designed as an electric motor and in turn is connected to a battery 14 and is driven by it.

The movable loading lift 1 also has an operating unit 15 arranged in the area of the rear 5 for moving the loading lift 1 over the ground and for moving the receiving device 12 by means of the motor 13 in the vertical direction along the mast 11 for lifting and lowering. The operating unit 15 has a handlebar 16 with handles 17 arranged on both sides, which are gripped by the left and right hands of the operator when he stands behind the rear 5 of the movable loading lift 1 and pulls or pushes it using the handles 17. The actual travel movement of the loading lift 1 is generated manually by the operator. However, it would also be possible for the operating unit 15 to have operating elements for actuating a travel drive and possibly a steering drive.

The operating unit 15 also has a lift operating element 18, which is connected to the motor 13 by means of an electrical line 19. With the lift control element 18, the recording device 12 is moved up and down in the vertical direction.

These previously described elements of the movable loading lift 1 are from the German patent application DE 10 2015 115 392 A1 the registration ring is known and will therefore not be described in more detail below.

A swivel locking unit 20 for the two front castors 7 is arranged on the chassis 2 and the lift unit 10. The swivel locking unit 20 has a remote control element 21 which is arranged in the area of the rear 5. In the present case, the remote control element 21 is arranged in the area of the control unit 15 in order to enable simple operation. But it would also be possible to have the remote control element 21 in one to arrange another area of the rear 5 that is easily accessible to the user.

In the present example, the remote control element 21 is a remote control lever 22 which is connected to a Bowden cable 23 which is guided in a grommet 24. The Bowden cable 23 and the grommet 24 are guided down on the mast 11 and forward through the front legs 6 to the front castors 7. This is implemented in such a way that by actuating the remote control lever 22, the actuation of both front castors 7, described further below, takes place at the same time.

The more precise function of the swivel locking unit 20 will now be explained below, in particular with reference to 3 , 4 and 6 , 7 explained. The swivel locking unit 20 has a locking element 25 for each of the two front swivel castors 7. The locking element 25 is not part of the respective front steering roller 7. Rather, it is a part that is attached to the chassis 2. In the example shown here, the locking element 25 is designed as a locking bolt 26, which is connected to the Bowden cable 23. The locking bolt 26 is attached to the chassis 2 by means of a console 27. The console 27 enables the locking bolt 26 to move back and forth depending on the actuation by the Bowden cable 23. A spring 28 is also arranged, which moves the locking bolt 26 to the right when the Bowden cable 23 is released (see 3-7 ). The console 27 is connected to the chassis 2 in a non-destructively detachable manner by means of screw connections 29.

The respective front steering roller 7 has a locking counter-element 30 which is designed to correspond to the locking element 25. In the present case it is a locking recess 31, which is formed in an extension 32 of the front steering roller 7.

The function of the new swivel locking unit 20 is good based on a comparison of 3 and 4 with 6 and 7 understandable. 3 and 4 show the release position of the locking element 25, while 6 and 7 show the engagement position of the locking element 25 and even the engagement between the locking element 25 and the locking counter element 30. A distinction must be made between the engagement position of the locking element 25 and the engaging position between the locking element 25 and the locking counter element 30. This is because the engaged position of the locking element 25 only means that the locking element 25 would be able to engage with the locking counter element 30. However, the actual intervention only takes place when the locking counter element 30 is in the appropriate position.

In 3 and 4 the locking element 25 is in the release position, so that the front steering roller 7 can pivot freely about its vertical axis in order to enable cornering with the movable loading lift 1. It can be seen that there is no contact between the locking element 25 and the locking counter element 30. In particular, the locking bolt 26 does not engage in the locking recess 31. This release position is achieved by tightening the Bowden cable 23 using the remote control lever 22, so that the locking bolt 26 moves away from the front castor 7 against the force of the spring 28. This position locks into place and is held until the Bowden cable 23 is released using the remote control lever 22.

The resulting engagement position of the locking element 25 is in the 6 and 7 shown. It can be seen that the locking bolt 26 has moved in the direction of the front steering roller 7 due to the force of the spring 28 and now engages with its free end in the locking recess 31 in the extension 32 of the front steering roller 7. As a result of this intervention, the front steering roller 7 can no longer pivot about its vertical axis. The pivot position adopted is therefore retained until the remote control lever 22 is actuated again.

8-13 show various views of a second exemplary embodiment of the new movable loading lift 1. In this case, the swivel locking unit 20 has a differently designed locking element 25. Instead of the locking bolt, a locking spring 33 designed as a leaf spring is present. The locking spring 33 is connected to the Bowden cable 23 and the grommet 24 by means of a clamping device 34. At its other end, the locking spring 33 is connected to the chassis 2 in a non-destructively detachable manner by means of a fastening device 35.

In this case, the locking element 25 designed as a locking spring 33 simultaneously takes over the function of the spring of the other exemplary embodiment. Regarding the in 9 and 10 Release position shown and in 12 and 13 In the engagement position shown, reference is made to the statements given above.

REFERENCE SYMBOL LIST

1

Movable loading lift

2

chassis

3

Forward direction of travel

4

front

5

Rear

6

foreleg

7

Front swivel castor

8th

hind leg

9

Rear swivel castor

10

Lift unit

11

mast

12

Recording device

13

engine

14

battery

15

Control unit

16

Handlebars

17

Handle

18

Lift control element

19

Electrical line

20

Swivel locking unit

21

Remote control element

22

Remote control lever

23

Bowden cable

24

grommet

25

Locking element

26

locking bolt

27

console

28

Feather

29

Screw connection

30

Locking counter element

31

Locking recess

32

appendage

33

Locking spring

34

Clamping device

35

Fastening device

Claims (9)

Movable loading lift (1) for picking up, moving, lifting and lowering goods, with a) a chassis (2) with a front (4) seen in the forward direction of travel (3) and a rear rear (seen in the forward direction of travel (3) ( 5), b) a lift unit (10) arranged on the chassis (2) with a mast (11) and a receiving device (12) for picking up the goods, c) a motor (13) connected to the lift unit (10), i.e ) an operating unit (15) arranged in the area of the rear (5) for moving the loading lift (1) and for moving the receiving device (12) by means of the motor (13) in a vertical direction along the mast (11) for lifting and lowering, e) a front swivel castor (7) arranged on the chassis (2) in the area of the front (4) and a rear swivel castor (9) arranged in the area of the rear (5), characterized by f) a swivel locking unit (20) for the front swivel castor (7) and/or the rear swivel castor (9), wherein g) the swivel locking unit (20) has a remote control element (21) which is arranged in the area of the rear (5), h) the swivel locking unit (20 ) has a locking element (25) which works together with a locking counter element (30) of the front swivel castor (7) or the rear swivel castor (9), i) the swivel locking unit (20) is designed and arranged in such a way that by actuating the Remote control element (21), the locking element (25) can be moved between an engagement position and a release position, j) the chassis (2) in the area of the front (4) has two spaced front legs (6), at the end of which there is a front steering roller (7 ) is arranged, or the chassis (2) in the area of the front (4) has a centrally arranged front leg (6), at the end of which a front swivel roller (7) is arranged, and ka) the swivel locking unit (20) - mechanical connecting means which connects the remote control element (21) to the locking element (25), or - has electrical connecting means and mechanical connecting means and the electrical connecting means connects the remote control element (21) to the electric motor and the mechanical connecting means connects the electric motor to the locking element (25), wherein at least one mechanical connecting means is guided internally through the two spaced front two (6) or the centrally arranged front leg (6), and / or kb) an electric motor for actuating the swivel locking unit is present, which is arranged within a front leg. Movable loading lift (1). Claim 1 , characterized by two front swivel castors (7) arranged on the chassis (2) in the area of the front (4), the swivel locking unit (20) for the two front swivel castors (7) each having a locking element (25), which a locking counter element (30) of the respective front steering roller (7) works together, and the pivot locking unit (20) is designed and arranged such that the two locking elements (25) can be moved together between an engagement position and a release position by actuating the remote control element (21). Movable loading lift (1). Claim 1 or 2 , characterized by two rear swivel rollers (9) arranged on the chassis (2) in the area of the rear (5). Movable loading lift (1). Claim 3 , characterized in that the swivel locking unit (20) for the two rear swivel castors (9) each has a locking element (25) which works together with a locking counter element (30) of the respective rear swivel castor (9), and the swivel locking unit (20) is designed and arranged in such a way that the two locking elements (25) can be moved together between an engagement position and a release position by actuating the remote control element (21). Movable loading lift (1) according to at least one of the preceding claims, characterized in that the respective locking element (25) is not part of the respective front steering roller (7) or rear steering roller (9). Movable loading lift (1). Claim 5 , characterized in that the respective locking element (25) is not connected to the respective front swivel castor (7) or rear swivel castor (9). Movable loading lift (1) according to at least one of the preceding claims, characterized in that the respective locking element (25) and the respective associated locking counter-element (30) are designed and arranged for positive engagement with one another. Movable loading lift (1) according to at least one of the preceding claims, characterized in that the swivel locking unit (20) is designed and arranged such that the locking element (25) in the release position does not engage in the respective associated locking counter-element (30) and the front Swivel roller (7) and/or the rear swivel roller (9) can thus be pivoted in the sense of changing the direction of travel of the movable loading lift (1). Movable loading lift (1) according to at least one of the preceding claims, characterized in that the swivel locking unit (20) is designed and arranged such that the locking element (25) in the engaged position engages in the respective associated locking counter-element (30), provided that the respective Front swivel castor (7) and/or rear swivel castor (9) is in a locking pivot position, and the front swivel castor (7) and/or the rear swivel castor (9) thus prevents the direction of travel of the movable loading lift from changing (1) cannot be pivoted.

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