EP3601011A1

EP3601011A1 - Foldable load transport cart

Info

Publication number: EP3601011A1
Application number: EP18702258.7A
Authority: EP
Inventors: Kenth Karlsson; Torsten Plate; Heiko Tullney
Original assignee: Hilti AG
Current assignee: Hilti AG
Priority date: 2017-03-24
Filing date: 2018-01-29
Publication date: 2020-02-05
Also published as: US20200189637A1; EP3378727A1; WO2018171960A1; CN110431061A

Abstract

A load transport cart (1) for transporting loads (WK), preferably tool cases, comprising a carrier frame (10) which has a first and second carrier frame portion (100, 200), wherein the first carrier frame portion (100) extends in a first plane (E1) and the second carrier frame portion (200) extends in a second plane (E2), at least two wheels (300) arranged on the rear side (RS) of the first carrier frame portion (100) for moving the load transport cart (1), and at least one first foldable tray (112) which is arranged on the front side (VS) of the first carrier frame portion (100), wherein the load transport cart (1) furthermore comprises at least one second foldable tray (208) which is arranged on the front side (VS) of the second carrier frame portion (200), wherein the second carrier frame portion (200) is pivotable, relative to the first carrier frame portion, between a folded-up position and an unfolded position about a substantially horizontal carrier frame pivot axis (X) which is arranged between the first and second carrier frame portion (100, 200).

Description

"Foldable load transport car"

The present invention relates to a load transport vehicle for transporting loads, preferably tool cases. The load transport cart comprises a support frame having a front side and a rear side, which has a first and second support frame section. In this case, the first carrier frame section extend in a first extension plane and the second carrier frame section in a second extension plane. At least two wheels for moving the load transport wagon are arranged on the rear side of the first carrier frame section, at least one first shelf being arranged on the front side of the first carrier frame section.

Trucks of the type mentioned are known, for example in the form of sack trucks in principle from the prior art.

It is the object of the present invention to provide a load transport car of the type mentioned, which is versatile, easy to handle and space-saving stowed.

This object is achieved in a load transport vehicle of the type mentioned above in that the load transport vehicle further comprises at least a second tray, which is arranged on the front side of the second carrier frame portion. In addition, the second carrier frame portion is pivotable relative to the first carrier frame portion between a folded position and an unfolded position about a substantially horizontally extending, between the first and second support frame portion arranged Trägerrahmenschwenkachse. The second carrier frame portion lies in its unfolded position in the direction of gravity above the first carrier frame portion. In the folded-up position of the second carrier frame section, the second extension plane of the second carrier frame section is arranged substantially parallel to the first extension plane of the first carrier frame section and the rear side of the second carrier frame section opposite to the rear side of the first carrier frame section. The first and second trays are pivotable between a folded position and a deployed position. In its deployed position, the first and second trays are intended to receive loads to be transported on their upwardly facing sides. In its folded position is the first Tray arranged substantially parallel to the first plane of extent of the first carrier frame portion and the second tray substantially parallel to the second plane of extension of the second carrier frame portion.

The present invention includes the recognition that, for example, on construction sites a variety of tools and equipment are used, which are needed in different applications and must be transported from one area of use to another area of use. Although ordinary hand trucks are suitable for transporting loads, they are bulky and are difficult to transport, especially on rough terrain such as on construction sites.

The load carrier according to the invention can be folded from its unfolded state of use to a compact size. The pivotable arrangement of the first and second carrier frame sections makes it possible to use the entire length of the carrier frame for attaching trays. In the folded state, the load transport car can be carried by an operator like a tool box. Likewise, it is possible to carry the folded load transport vehicle like a backpack on his back.

The first carrier frame portion may have on its front side a further, third tray, which is arranged in the direction of gravity below the first tray. Preferably, like the first and second tray and the third tray between a retracted position and a deployed position is pivotable. The third tray can be arranged relative to the first tray in its folded position, in particular such that the third tray at least partially rests against the first tray. In other words, the first and third trays may overlap in their folded position in the direction of gravity. In this way, by attaching a further, third tray continues to ensure that the load transport car can be folded to a compact size.

For this reason, it is also advantageous if a tray arranged on the first or second carrier frame section substantially does not project beyond the first or second carrier frame section in its folded-in position. For example, the trays may be arranged on the support frame such that they do not protrude by more than 10% of the length of the corresponding first or second support frame portion (as measured in the longitudinal direction thereof). It is also advantageous if the shelves of the support frame upwards, ie against the direction of gravity, are pivotable from the unfolded position to the retracted position. Then lie in the unfolded position upwardly facing sides of the shelves (which serve as shelves) in the folded position of the shelves of the front of the support frame opposite. This can simplify the construction of the storage of the shelves in comparison to the pivoting down, ie in the direction of gravity.

In a preferred embodiment, the second carrier frame portion in its unfolded position at its upper end in the direction of gravity a fourth tray. Also, the fourth tray can be pivoted between a folded position and a deployed position. In order to be able to fold the load transport car compact, the fourth tray is in its folded state on the back of the second support frame section. If the fourth tray to be unfolded, it is pivoted to the front of the support frame. The swept swivel angle is greater than 180 °.

The truck can be used very flexibly if its shelves are independently pivotable between a folded position and a deployed position. In the unfolded state of the truck transport can be folded out so only a lower shelf in a large, much space-consuming load, whereas the other shelves remain collapsed. In the case of several smaller loads, however, all shelves can be folded out and used to store the loads.

The shelves can be configured, for example, plate-shaped with a flat support surface for depositing a load. This is particularly advantageous for the first, second and third storage. In particular, in the top shelf of the support frame, so the fourth shelf, it has been found that a configuration with support frame for hanging a load is low.

Generally, it is useful for reducing the collapsed size of the pallet truck when the shelves disposed on the carrier frame define planes (like the first and second carrier frame sections) so that they can be stacked as flat as possible.

The wheels of the load transport vehicle may each be mounted on a wheel suspension such that they are each rotatable about a wheel axle. Preferably, the wheel suspensions are each pivotable about a perpendicular to the carrier frame pivot axis arranged suspension axle between a folded position and an unfolded position. To a compact folding the truck to ensure, it is preferred that the wheel axles of the wheels in the folded position of the wheel suspensions are each arranged perpendicular to the first plane of extent of the first support frame portion and in the deployed position of the suspension parallel to the first plane of extension of the first support frame portion. The wheel suspensions should be designed as compact as possible in this case in order to keep the width of the folded load transport vehicle (measured perpendicular to the first plane of extension of the first support frame section) low.

The wheel suspensions preferably each comprise a slide rail. The slide rails are to facilitate the overcoming of stairs or other obstacles. For this purpose, the slide rails may extend at a distance from the first carrier frame portion and substantially parallel to the longitudinal direction of the first carrier frame portion. The distance between a slide rail and the first carrier frame portion may correspond approximately to the distance of a point farthest from the first carrier frame portion on the tire of one of the wheels and the first carrier frame portion. The said distance may also be slightly smaller than this distance and at least about 80% of the same amount.

Again, it is particularly advantageous if the slide rails are pivotable together with the wheel suspensions between the folded position and the deployed position of the wheel suspensions about the suspension axle.

According to another preferred embodiment, the wheels each comprise an elastic tire and a plurality of spokes, wherein the spokes are adapted to cushion a deformation of the tire. In other words, the spokes may be shaped to provide a compliant support of the tire. In this case, the tire may be non-inflatable or non-pneumatic, because the springs absorb the spokes. This embodiment of the wheels is advantageous because a tedious and time-consuming inflation of the tire is eliminated. The truck is always ready to use. The wheels are preferably relatively large because large wheels make it easier to move the truck compared to small wheels. For example, the wheels may have a diameter of 200 mm and a width (measured in the direction of the wheel axis) of 60 mm.

In order to facilitate the carrying of the folded load transport vehicle, a handle assembly may be arranged on the in the folded-out position in the direction of gravity downwardly facing side of the first tray, that the load transport car in the folded state by an operator on the handle assembly is portable. To better grasp the handle assembly, this can be designed gripped behind. Of the folded load transport cars can then be worn comfortably like a suitcase by the operator.

If one or more tool boxes are to be stowed on the truck, it is advantageous if they can be secured with straps on the shelves. For this purpose, the support frame may have first coupling means, which can be coupled with first counter coupling means of a belt to be attached to the load transport wagon. In addition, the shelves can have second coupling means, which can be coupled to second counter coupling means of a belt arranged on the load transport wagon. With regard to the folded-in positions of the shelves, the second coupling means are preferably located in the direction of gravity of the upper ends of the shelves, in particular the first, second or third tray.

The present invention also relates to the use of the above-described folding load transport vehicle as a shelving system. For this purpose, it is provided to fasten the load transport carriage by means of at least one arranged on a wall adjustable fastening means on the wall.

Further advantages will become apparent from the following description of the figures. In the figures, various embodiments of the present invention are shown. The figures, the description and the claims contain numerous features in combination. The skilled person will conveniently consider the features individually and summarize meaningful further combinations.

In the figures, identical and similar components are numbered with the same reference numerals.

Show it:

Fig. 1 a load transport car according to the invention unfolded

Use state in a perspective front view obliquely from below, Fig. 2 shows a load transport car according to the invention in unfolded

State in a frontal side view,

Fig. 3 shows a load transport car according to the invention in the folded

State of use in a perspective side view obliquely from above,

FIGS. 4A-4E illustrate an exemplary process of collapsing a present invention

Load transport vehicle from unfolded state of use in the folded state,

5 is a fully loaded invention according to the invention in the unfolded state of use in a perspective front view obliquely from below,

Fig. 6 is a loaded with a tool box invention

Load carriage in unfolded state of use in a perspective front view obliquely from above,

Fig. 7 shows a load transport car according to the invention unfolded

Use state in a perspective rear view obliquely from above, Fig. 8 shows a wheel of a truck according to the invention, and

9A-9B the load transport car according to the invention in one of a

Fastening device spaced state and a suspended in the fastener state for using the truck according to the invention as a racking system. Embodiment:

A preferred embodiment of a foldable load transport vehicle 1 is shown in Figs. 1 to 3. Fig. 1 and 2 show the load transport vehicle 1 in its unfolded, slightly tilted from a vertical position use state, while Fig. 3 shows the folded state of the truck 1. In the following, the directions "up", "above", "below" and "below" refer to the direction of gravity g.

The load transport carriage 1 comprises a support frame 10. The support frame 10 again comprises a first support frame section 100 extending in a first extension plane E1 and a second support frame section 200 extending in a second extension plane E2. In addition, the first support frame section 100 extends along a first longitudinal direction L1 and the second carrier frame portion 200 along a second longitudinal direction L2. The first carrier frame portion 100 has a lower end 100a and an upper end 100b. Likewise, the second carrier frame portion 200 has a lower end 200a and an upper end 200b.

The unfolded state of use of the load transport vehicle 1 defines below a front side VS and a rear side RS of the support frame 10 or its first and second support frame sections 100, 200.

On the rear side RS of the first carrier frame section 100 there are two wheels 300, which serve for moving the load transport vehicle 1. The configuration of the wheels 300 of the load transport vehicle 1 will be described in detail below.

As is apparent from FIGS. 1 to 3, the first carrier frame portion 100 has two parallel longitudinal struts 102, 104, which of a lower cross member 106 at the lower end 100a of the first support frame portion 100 and an upper cross member 108 at the upper end 100b of the first support frame portion 100 are interconnected. Similarly, the second support frame portion 100 has two parallel longitudinal struts 202, 204 which are interconnected by an upper cross strut 206 at the upper end 200b of the second support frame portion 200.

The first longitudinal strut 102 of the first support frame section 100 is articulated by a first hinge connection 12 to the first longitudinal strut 202 of the second support frame section 200. In a corresponding manner, the second longitudinal strut 104 of the first support frame section 100 is connected by a second hinge connection 14 to the second Longitudinal strut 202 of the second support frame portion 200 hingedly connected. In other words, the lower end 200 a of the second carrier frame portion 200 is coupled to the upper end 100 b of the first carrier frame portion 100 by the two hinge joints 12, 14. In unfolded state of use of the truck 1, the articulated connections 12, 14 define a substantially horizontally extending carrier frame pivot axis X between first and second carrier frame sections 100, 200. In this way, the second carrier frame section 200 is movable relative to the first carrier frame section 100 between a collapsed position (FIG. and an unfolded position (Figures 1 and 2) about the carrier frame pivot axis X pivotally.

As can be seen in FIGS. 1 and 2, the second carrier frame section 200 lies in its unfolded position above the first carrier frame section 100. The first and second extension planes E1, E2 of the first and second carrier frame sections 100, 200 are substantially parallel to one another. In unfolded state of use of the truck 1, the second carrier frame portion 200 is in its unfolded position. In addition, in the deployed unfolded state of the load transport vehicle 1, the first and second carrier frame sections 100, 200 preferably extend along a common longitudinal direction L, so that the first and second longitudinal directions L1, L2 are coaxial with each other.

At the front side VS of the first carrier frame portion 100, two trays 1 10, 1 12 are arranged. The lower tray 110 of the first carrier frame portion 100 is disposed near the lower end 100 a of the first carrier frame portion 100 and below the upper tray 1 12 of the first carrier frame portion 100. The lower tray 110 is pivotable about a pivot axis A1 and the upper tray 112 is pivotable about a pivot axis A2 between a folded position and a deployed position (Figs. 4A to 4E).

In addition to the two shelves 110, 112 of the first carrier frame section 100, the second carrier frame section 200 also has two shelves 208, 210 on its front side VS. The upper tray 210 of the second carrier frame portion 200 is disposed near the upper end 200 b of the second carrier frame portion 200 and above the lower tray 208 of the second carrier frame portion 200. The lower tray 208 is pivotable about a pivot axis A3 and the upper tray 210 is pivotable about a pivot axis A4 between a folded position and a deployed position (Figs. 4A to 4E).

In FIGS. 1 and 2, the trays 110, 112, 208, 210 in their unfolded position are perpendicular to the first and second plane of extent E1, E2 of the first and second, respectively Carrier frame portion 100, 200 shown. In their unfolded position, the shelves 110, 112, 208, 210 of the support frame 10 and the first and second support frame sections 100, 200 respectively define a downwardly facing bottom 1 10a, 12a, 208a, 210a and an upwardly facing top 1 10b, 1 12b, 208b, 210b.

In order to transfer the two trays 1 10, 1 12 of the first carrier frame portion 100 and the lower tray 208 of the second carrier frame portion 200 from its unfolded position to the retracted position, the trays 1 10, 1 12, 208 each upward, i. against the direction of gravity g (in the illustrated embodiment in a clockwise direction) to one of the respective tray 1 10, 1 12, 208 associated pivot axis A1, A2, A3 pivoted. In order to securely hold the two trays 110, 112 of the first carrier frame portion 100 and the lower tray 208 of the second carrier frame portion 200 in the respective folded position, locking means are provided. The pivoting movements of the shelves 1 10, 1 12, 208, 210 of the support frame 10 will be explained in more detail below with reference to FIGS. 4A to 4E.

The load transport vehicle 1 further comprises two wheel suspensions 302, which are constructed substantially identical to one another. In the following, therefore, only the construction of one of the wheel suspensions 302 will be discussed.

The suspension 302 includes a first rod 304 extending in the longitudinal direction L1 of the first support frame portion 100 and having a top end 304b and a bottom end 304a. The first rod 304 is mounted near its lower end 304a in a first pivot bearing 16. The upper end 304 b of the rod 304 is mounted in a second pivot bearing 18. By this arrangement, a wheel suspension pivot axis S extending along the rod 304 is defined about which the suspension 302 is pivotable.

The suspension suspension pivot axes S of the two wheel suspensions 302 are parallel to each other and perpendicular to the carrier frame pivot axis X and longitudinal direction L1 of the first carrier frame portion 100. By the pivotal mounting of the two suspensions 302, these together with the wheels 300 are independently pivotable between a retracted position and a deployed position.

On the first rod 304 of the suspension 302, a second rod 306 is formed. More specifically, the second rod 306 is integrally connected at its upper end 306b to the upper end 304b of the first rod 304 and at its lower end 306a to the lower end 304a of the first rod 304. The first and second rods 304, 306 lie in a common plane of extent. In the folded position of the suspension 302 The plane of extent spanned by the first and second bars 304, 306 extends parallel to the plane of extent E1 of the first carrier frame section 100 (FIG. 3).

The second rod 306 has an upper rod portion 306c, a middle rod portion 306d, and a lower rod portion 306e. The upper bar portion 306c may serve, for example, as a handle for an operator of the load transport vehicle 1.

The middle rod portion 306d extends at a distance parallel to the first rod 304. In the illustrated embodiment, a slide rail 312 is attached to the side facing away from the back RS of the first support frame portion 100 side of the central rod portion 306d. The second rod 306 and the slide rail 312 provided thereon allow a simplified overcoming of steps or other obstacles compared to the case that such a construction is not present.

The lower rod portion 306e of the second rod 306 is connected to a first support arm 308 (FIG. 7) and the lower rod portion of the first rod 304 is integrally connected to a second support arm 310. Between the first and second support arm 308, 310, the wheel 300 of the suspension 302 is mounted such that the wheel 300 is rotatable about a wheel axis R.

The wheel axles R are arranged in the folded-in position of the wheel suspensions 302 perpendicular to the first plane of extent E1, E2 of the first carrier frame section 100 and in the deployed position of the wheel suspensions 302 parallel to the first plane E1 of the first carrier frame section 100. The two wheel axles R are coaxial with each other in the deployed position of the suspensions 302.

The process of folding a load carrier 1 according to the invention will now be described with reference to FIGS. 4A to 4E.

The load transport vehicle 1 shown in FIG. 4A substantially corresponds to that of FIGS. 1 and 2. The load transport vehicle 1 of FIG. 4A is in the unfolded state of use, with all its trays 1 10, 1 12, 208, 210 being unfolded, ie in their unfolded position.

2 and 4A, the longitudinal directions L1, L2 of the first and second carrier frame sections are substantially parallel to each other and approximately parallel to the direction of gravity g. The deviation from the vertical orientation of the load transport vehicle 1 is due to an elongated support device 1 14 arranged on the lower side 1 10a of the lower shelf 1 10 of the first support frame section 100. As in FIGS 2 and 4A, the load transport vehicle 1 is supported on the support device 14 and the lower crossbar 106 and the lower ends of the first and second longitudinal struts 102, 104 of the first carrier frame section 100. The longitudinal directions L1, L2 include with the direction of gravity g an inclination angle α of about 6 °. In use, the truck 1 can be tilted out of this unfolded condition of use of FIGS. 2 and 4A by being supported on the wheels 300 so that the angle of inclination α increases from about 6 ° to a higher value. In Figs. 2 and 4A, the wheels 300 do not touch the ground, but hover a short distance above the ground. The floating arrangement of the wheels 300 simplifies tilting of the load transport vehicle 1 from the unfolded state of use. For tilting, the cross strut 106 can also be used.

In Fig. 4B, the upper tray 210 of the second carrier frame portion 200 has been pivoted from its deployed position to its retracted position. The swept in this pivoting movement swivel angle is greater than 180 °. In FIG. 4B, in the expanded position, in FIG. 4B, the upper shelf 210 of the second carrier frame section 200 is substantially perpendicular to the extension plane E2 of the second carrier frame section 200, the pivot angle taken by the upper shelf 210 between the illustrations of FIGS. 4A and 4B is substantially 270 degrees °. The upper tray 210 is located on the rear side RS of the second carrier frame section 200 in FIG. 4B.

In Fig. 4C, the lower tray 208 of the second carrier frame section 200 and the upper tray 1 12 of the first carrier frame section 100 have been moved from the deployed position to the retracted position. The swept over in this upward pivotal movement pivot angle is substantially 90 °. In the folded-in position, the upper side 12b of the upper shelf 112 of the first carrier frame section 100 and the upper side 208b of the lower shelf 208 of the second carrier frame section 200 at the front side VS of the carrier frame 10 at least partly come into contact. The upper tray 1 12 of the first carrier frame portion 100 and the lower tray 208 of the second carrier frame portion 200 do not overlap each other in their folded positions.

In Fig. 4D, the lower tray 1 10 of the first support frame portion 100 has been transferred from its unfolded position to its folded position. As with the lower shelf 208 of the second carrier frame section 200 and the upper shelf 112 of the first carrier frame section 100, the lower shelf 110 of the first carrier frame section 100 has been swung upwards by a pivoting angle of substantially 90 ° during this pivoting movement. The upper side 1 10b of the lower shelf 110 of the first carrier frame section 100 is in its folded position on the bottom 1 12a of the upper tray 1 12 of the first carrier frame portion 100, at least insofar as the lower and upper tray 1 10, 1 12 of the first carrier frame portion 100 overlap each other in the longitudinal direction L1 of the first carrier frame portion 100. When the trays 110, 112, 208, 210 are in their folded positions as shown in FIG. 4D, they are substantially parallel to the first and second extending planes E1, E2 of the first and second carrier frame sections 100, 200, respectively.

In addition, in Fig. 4D, the two wheel suspensions 302 have been pivoted about their respective suspension pivot axis S from the deployed position to the retracted position.

4E shows the folded state of the load transporting carriage 1. To move from the arrangement of FIG. 4D to the arrangement of FIG. 4E, the second support frame section 200 is pivoted down about the support frame pivot axis X relative to the first support frame section 100. The pivot angle is substantially 180 ° in this pivotal movement.

As can be seen in FIG. 4E, in the folded-up position of the second carrier frame section 200, the rear side RS of the second carrier frame section 200 faces the rear side RS of the first carrier frame section 100, so that the second extension plane E2 of the second carrier frame section 200 is substantially parallel to the first extension plane E1 of FIG first carrier frame portion 100 is arranged.

The described foldable arrangement of both the second carrier frame section 200 relative to the first carrier frame section 100 and its lower and upper shelves 1 10, 208, 1 12, 210, it is possible to fold the truck 1 to a compact and easy to handle size. This allows a simpler transport and a space-saving stowage of the load transport vehicle 1. For example, the folded load transport vehicle 1 itself be carried like a suitcase by an operator with one hand.

In the illustrated embodiment, the load transport vehicle 1 in its unfolded condition of use has a total length of about 1110 mm (measured in the longitudinal direction L1, L2), a width of about 693 mm (measured perpendicular to the extension planes E1, E2) and a width of about 664 mm (measured in the direction of the carrier frame pivot axis X). In the folded state, the truck 1 has a length of about 725 mm (measured in the longitudinal direction L1), a Width of about 201 mm (measured perpendicular to the plane E1) and a width of about 520 mm (measured in the direction of the carrier frame pivot axis X).

The foldable design of the shelves 1 10, 112, 208, 210 of the support frame 10 allows a particularly flexible loading of the load transport vehicle 1, for example, with tool cases WK (Fig. 5). Depending on which of the shelves 1 10, 1 12, 208, 210 are unfolded or folded, larger or smaller tool box WK or other loads can be transported on the truck 1. For example, in the arrangement of the trays 1 10, 1 12, 208, 210 illustrated in FIG. 4C, the load transport vehicle 1 can receive a particularly large load on the lower tray 110 of the first carrier frame section 100.

The lower and upper shelves 1 10, 1 12 of the first carrier frame section 100 and the lower shelf 208 of the second carrier frame section 200 are formed as flat plates. As shown in FIG. 5, for example, tool cases WK can be stacked horizontally on these three trays 110, 112, 208 and placed standing next to one another. On the tops 1 10b, 1 12b, 208b of the shelves 110, 112, 208, a slip-resistant coating 20 is applied.

The width of the bearing surfaces, i. the effectively usable area of the upper sides 110b, 112b of the lower and upper shelves 110, 112 is about 368 mm (measured perpendicular to the extension plane E1) and that of the lower shelf 208 is about 343 mm (measured perpendicular to the extension plane E2) , The width of the bearing surfaces of the tray 110, 112, 208 is about 520 mm (measured in the direction of the carrier frame pivot axis X).

To fix the tool case WK on the shelves 110, 1 12, 208 straps GT can be used (Fig. 1). For attaching straps GT on the support frame 10, first coupling means 22 are arranged on the first and second support frame sections 100, 200, which coupling means can be coupled with first counter-coupling means provided at one end of a belt. At the upper in the folded position upper ends of the shelves 110, 112, 208 of the support frame 10 second coupling means 24 are provided, which can be detachably connected to second counter coupling means at the other end of the belt GT. The belts GT may be flexible (e.g., rubber) or non-flexible (e.g., configured as straps).

The upper shelf 210 of the second carrier frame section 200 differs structurally from the other three shelves 1 10, 112, 208 of the carrier frame 10. The upper shelf 210 of the second carrier frame section 200 comprises a support frame 212, which runs parallel to one another with the second carrier frame section 200 articulated Guide rails 214, 216 has. The support frame 212 also has a transverse strut 222 interconnecting the two guide rails 214, 216 on its underside 210a. A guide structure 218, 220 extending along the longitudinal direction of the guide rails 214, 216 is provided on the opposite inner surfaces of the two guide rails 214, 216.

If a tool case WK, approximately along its side surfaces, is provided with mating engagement structures complementary to the two engagement structures 218, 220 of the upper tray 210 of the second carrier frame section 200, the tool box WK can be slid lying on the unfolded upper tray 210 (FIGS. 5 and 6) ). The tool case WK is held by the transverse strut 222 of the upper tray 210 and by the engagement of the engagement structures 218, 220 in the corresponding counter-engagement structure. Belts, as described in connection with the other trays 110, 112, 208, are not required in the upper tray 210 of the second carrier frame section 200. As a result, the upper tray 210 allows the tool box WK to be readily opened or closed as needed (FIG. 6).

In order to simplify the carrying of the load transport vehicle 1 in its folded state, a handle assembly 1 16 is provided on the bottom 1 12a of the upper tray 1 12 of the first carrier frame portion 100. The handle assembly 116 is arranged such that in the folded position of the upper and lower tray 112, 1 10 of the first support frame portion 100, the handle assembly 116 is above the upper end of the lower tray 1 10. In addition, the handle assembly 1 16 is arranged such that it lies in the folded state of the truck carrier 1 just below the Trägerrahmenschwenkachse X or at substantially a height as the upper cross member 108 of the first support frame portion 100. The handle assembly 1 16 does not protrude beyond the upper end of the upper tray 1 12 and is designed engageable behind.

As can be seen in FIG. 7, a hook device 26, which is movable between a folded-in position and an unfolded position, is arranged on the rear side RS of the second carrier frame section 200. The folded position of the chopping device 26 is shown for example in Fig. 1. The hook device 26 can serve for holding cables, hoses or the like.

The construction of the wheels 300 will now be described, which may also constitute an independent aspect of the present invention. Since the wheels 300 are identical to each other, only one of the wheels 300 will be discussed below. The wheel 300 includes a continuous, non-inflatable or non-pneumatic tire 314 and a hub 318 interconnected by equidistant identical spokes 320. The tire 314 has a profiled tread 316. The maturity 314, the hub 318 and the spokes 320 are integrally formed with each other. The wheel 300 is formed of, for example, a polymeric material. The spokes 320 are shaped to provide a resilient support. Each spoke 320 has an end 320a nearer to the hub 318 and an end 320b closer to the tire 314 and extending longitudinally along an extension surface. The extension surface of a spoke 320 is not straight, but U-shaped or inverted U-shaped curved. Specifically, each spoke 320 has in the longitudinal direction a portion 320c closer to the hub 318 and a portion 320e closer to the tire 314 and a middle portion 320d located between these two portions 320c, 320e. The portion 320c nearer to the hub 318 and the portion 320e closer to the tire 314 are about the same length and shorter than the middle portion 320d (measured in the longitudinal direction of the spoke 320). A hinge joint 322b, 322c is formed between the portion 320c nearer to the hub 318 and the middle portion 320d and between the tire 314 nearer portion 320e and the middle portion 320d, respectively, in that the cross sectional area of the spoke 320 (measured perpendicular to the extending surface of the spoke 320 ) in the region of the hinge joint 322b, 322c is smaller than outside this range. Such a hinge is also referred to as a film hinge. In the connecting region between the tire 314 and the spoke 320 and between the hub 318 and the spoke 320, an elevation 324 pointing to the spoke 320 on the hub 318 or elevation 328 on the tire is formed, to which the spoke 320 is again articulated by a film hinge 322a, 322d ,

The unfolded load transport vehicle 1 is also suitable for use as a shelving system. As shown in FIGS. 9A and 9B, the load transport car 1 is held in its unfolded condition of use by a wall-mounted fastener 500 thereto. The fastening device 500 has a beam body 502 with a guide channel 504 extending along the beam body 502. A lever arrangement 506 arranged at the upper end of the beam body 502 is coupled to two retaining clips 508, 510 via connecting means 512 running in the guide channel 504. One of the retaining clips 508 is located at the lower end of the beam body, while the other retaining clip 510 is arranged at the upper end of the beam body 502 below the lever arrangement 506. By operating the lever arrangement 506, the retaining clips 508, 510 can be moved along the beam body 502 in guide grooves 514. The lever assembly 506 is movable between a released state (FIG. 9A) and a cocked state (FIG. 9B). By transferring the lever arrangement 506 from the released to the tensioned state, the holding brackets 508, 510 move downwards along the bar body 502. As a result of the downward movement of the retaining clips 508, 510, a load transport vehicle 1 can be fixed to the fastening device 500. The upper headband 510 is configured in the illustrated embodiment to engage with the upper crossbar 206 of the second carrier frame portion 200. On the other hand, the lower retaining bracket 508 is adapted to partially surround the wheels 300 of the wheel suspension 302 located in its folded-in state from above.

LIST OF REFERENCE NUMBERS

1 truck

g gravity direction

10 support frames

100 First support frame section

200 Second support frame section

E1 First extension plane of the first carrier frame section

E2 Second extension plane of the second support frame section

L1 First longitudinal direction of the first carrier frame section

L2 Second longitudinal direction of the second carrier frame portion

100b, 100a upper and lower end of the first support frame portion

200b, 200a upper and lower end of the second support frame portion

VS Front side of the carrier frame

RS back of the carrier frame

300 wheels

102, 104 first and second longitudinal struts of the first support frame portion

202, 204 first and second longitudinal struts of the second support frame portion

106, 108 lower and upper transverse strut of the first support frame section

206 upper transverse strut of the second carrier frame section

12, 14 first and second articulated connection

X Carrier frame pivot axis

L common longitudinal direction

1 10, 1 12 lower and upper shelf of the first carrier frame section

208, 210 lower and upper tray of the second carrier frame portion A1, A2, A3, A4 pivot axes of the shelves

1 10a, 1 12a, 208a, 210a Bottom sides of the shelves

1 10b, 1 12b, 208b, 210b tops of the shelves 302 wheel suspensions

304, 306 first and second rod of the suspension

304b, 304a upper and lower end of the first rod

16, 18 First and second pivot bearings

S Suspension Swing Axles

306b, 306a upper and lower end of the second rod

308, 310 first and second support arm

306c, 306d, 306e upper, middle, lower rod portion of the second rod

312 slide rail

WK Tool Case

20 Anti-slip covering

GT strap

22 first coupling means on the support frame

24 second coupling means on the shelves

1 14 support device

α angle of inclination of the support frame

212 support frame

214, 216 guide rails

218, 220 engagement structures

222 cross strut

1 16 Handle arrangement

314 tires

316 tread

318 hub

320 spoke

322a, 322b, 322c, 322d hinged joints

320a the hub nearer the end of a spoke 320b the end of a spoke closer to the tire

320c, 320d, 320e spoke sections

324 elevation at the hub

326 Survey on the tire

26 hook device

500 fastening device

502 bar body

504 guide channel

506 lever arrangement

508, 510 lower and upper headband

512 connecting means

514 guide grooves

Claims

claims

Load transport vehicle (1) for transporting loads, preferably tool cases (WK), comprising:

a support frame (10) having a front side (VS) and a back side (RS) having first and second support frame portions (100, 200), the first support frame portion (100) being in a first plane of extent (E1) and the second support frame portion (200) extends in a second plane of extent (E2), at least two wheels (300) arranged on the rear side (RS) of the first carrier frame section (100) for moving the load transport vehicle (1), and

at least one first tray (1 12), which is arranged on the front side (VS) of the first carrier frame section (100),

characterized in that the load transport carriage (1) further comprises at least one second tray (208) which is arranged on the front side (VS) of the second carrier frame section (200),

wherein the second support frame portion (200) is pivotable relative to the first support frame portion (100) between a collapsed position and an unfolded position about a substantially horizontal support frame pivot axis (X) disposed between the first and second support frame portions (100,200).

wherein the second support frame portion (200) is in its unfolded position in the direction of gravity (g) above the first support frame portion (100) and in the folded position of the second support frame portion (200), the second extension plane (E2) of the second support frame portion (200) substantially parallel to the first plane of extent (E1) of the first carrier frame section (100) and the rear side (RS) of the second carrier frame section (100) is arranged opposite the rear side (RS) of the first carrier frame section (100),

wherein the first and second trays (1 12, 208) are pivotable between a folded position and a deployed position,

wherein the first and second trays (1 12, 208) in their deployed position are arranged to receive loads (WK) to be transported on their upwardly facing sides (1 12a, 208a, 1 12b, 208b), and

wherein the first tray (1 12) in its folded position substantially parallel to the first plane of extent (E1) of the first carrier frame portion (100) and the second tray (208) in its folded position substantially parallel to the second plane of extent

(E2) of the second carrier frame portion (200) is arranged. Truck (1) according to claim 1,

characterized in that the first carrier frame portion (100) on its front side (VS) has a third tray (110) which is arranged in the direction of gravity (g) below the first tray (112) and is pivotable between a folded position and a deployed position , wherein the first and third tray (1 10, 1 12) are arranged in their folded position such that the third tray (1 10) on the first tray (112) at least partially.

Truck (1) according to claim 1 or 2,

characterized in that the first, second and / or optionally third tray (1 12, 208, 1 10) against the direction of gravity (g) are pivotable from the unfolded position to the retracted position.

Load transport vehicle (1) according to one of the preceding claims,

characterized in that the second carrier frame portion (200) in its unfolded position has a fourth tray (210) at its upper end in the direction of gravity (g) which is pivotable between a folded position and a deployed position, the swept swivel angle between the unfolded position Position and the folded position is greater than 180 °.

Load transport vehicle (1) according to one of the preceding claims,

characterized in that the first, second, possibly third or / and optionally fourth tray (1 12, 208, 1 10, 210) are independently pivotable between a folded position and a deployed position.

Load transport vehicle (1) according to one of the preceding claims,

characterized in that the first, second, possibly third and optionally fourth tray (1 12, 208, 1 10, 210) have a flat support surface for depositing a load or a support frame (1 14) for suspending a load (WK) ,

Load transport vehicle (1) according to one of the preceding claims,

characterized in that the wheels (300) are respectively rotatably mounted on a wheel suspension (302) about a wheel axis (R), wherein the wheel suspensions (302) each about a perpendicular to the Trägerrahmenschwenkachse (X) arranged Radaufhängungsschwenkachse (S) between a folded position and one the wheel axles (R) of the wheels (300) in the folded position of the suspension (302) each perpendicular to the first plane of extent (E1) of the first support frame portion (100) and in the deployed position of the suspension (302) parallel to the first plane of extent (E1) of the first carrier frame portion (100) are arranged.

Truck (1) according to claim 7,

characterized in that the wheel suspensions (302) each comprise a slide rail (312) which extends at a distance from the first support frame portion (100) and substantially parallel to the longitudinal direction (L1) of the first support frame portion (100).

Truck (1) according to claim 8,

characterized in that the slide rails (312) are pivotable about the wheel suspension pivot axis (S) together with the wheel suspensions (302) between the folded position and the deployed position of the wheel suspensions (302).

Load transport vehicle (1) according to one of the preceding claims,

characterized in that the wheels (300) each comprise an elastic tire (314), preferably a non-inflatable tire (314), and a plurality of spokes (320), the spokes (320) being adapted to cause deformation of the sprocket (314) Tire (314).

Load transport vehicle (1) according to one of the preceding claims,

characterized in that at the in the unfolded position in

Direction of gravity (g) side facing downward (1 12a) of the first tray (1 12) one

Handle assembly (116) is arranged such that the load transport carriage (1) in the folded state by an operator on the handle assembly (116) is portable.

Load transport vehicle (1) according to one of the preceding claims,

characterized in that the first and second carrier frame sections (100, 200) have first coupling means (22) which can be coupled to first counter coupling means (GM1) of a belt (GT) to be attached to the load transport wagon (1).

3. truck (1) according to one of the preceding claims,

characterized in that the first, second and / or optionally third tray (1 12, 208, 1 10) in the folded position at its in the direction of gravity (g) upper end second coupling means (24), which with second counter coupling means of an the belt (1) to be attached belt (GT) are coupled.

4. Use of a load transport vehicle (1) according to one of the preceding claims as a shelving system,

characterized in that the load transporting carriage (1) is fastened to the wall by means of at least one adjustable fastening device (500) arranged on a wall.