DE3133465A1 - Device for raising and supporting wheels of a vehicle - Google Patents

Abstract

A device for raising and supporting vehicle wheels (1) is provided which operates with only two guide rollers (5, 6) per vehicle wheel (1) which is to be raised and in conjunction with an anti-tilt safety device (15). As anti-tilt safety device (15), a telescopically extendable rod (18) which is pushed under a wing (2) and clamped is proposed in a first exemplary embodiment. In a further exemplary embodiment, a yoke (22) which connects two frame components (4) which are fitted to an axle and on which in each case two guide rollers (5, 6) are arranged serves as anti-tilt safety device. Furthermore, a series of lifting devices are described. A preferred lifting device consists in a series-produced component of a jack (7) being attached on the frame (4) with the crank drive (8). The part of the jack (7) which is actuated with the crank drive (8) is connected to a transverse carrier (10) and carriers (11, 12) which branch off therefrom obliquely downwards. Plates (13, 14) which engage under the vehicle wheel (1) on the left and on the right next to its contact surface are arranged on the carriers (10, 11). The anti-tilt safety device (15) is connected to the carrier (12). By actuating the crank drive (8), the vehicle wheel (1) is raised without the anti-tilt safety device (15) experiencing a relative movement in relation to the wing (2). As a result, damage to the paintwork on the wing (2) is avoided. The device according to the invention can be manufactured with a simple design and in a cost-effective method in particular by using only two guide rollers (5, 6) per vehicle wheel (1). <IMAGE>

Description

Device for lifting and supporting wheels of a

Vehicle The invention relates to a device for lifting and Supporting wheels of a vehicle according to the preamble of claim 1.

The maneuvering possibilities of vehicles, in particular motor vehicles, Having their own steering devices are mostly limited and on many occasions insufficient. For example, the motor vehicles are to be placed in the parking spaces of workshops be placed as close together as possible so that the space available can be used to the full.

If the motor vehicles are placed side by side close together, a The vehicle can no longer be driven individually out of line, as the sideways Do not allow the arranged vehicle doors to be opened and thus not into the vehicle more can be entered. Such a vehicle can also no longer be pushed out of line, since the loosening of the Handbrake The vehicles must also be carried out from inside the vehicle When placed close to each other, a single vehicle cannot out of line either be moved because the vehicle steering allows only a limited steering angle There is also maneuvering in narrow spaces, for example also in workshops with the vehicle's own steering no longer possible or at least cumbersome and time consuming.

Facilities to increase the maneuverability in the form of pallet trucks with castors that are attached to the individual vehicle wheels and they are known to lift and support them. A well-known pallet truck (US-PS 1 275 716) consists of a C-shaped wheel on the vehicle's longitudinal side attachable frame, adjustable in length by a rack and pinion drive ist4 There are two swivel castors on the legs of the C-shaped frame of the lift truck and two opposing rotatable support rollers, which in the lift position support the vehicle wheel on the tread below the wheel axle. The C-shaped frame is used to attach the pallet truck to the vehicle wheel to be lifted wide open in length. This allows the lift truck to be pushed up to the vehicle wheel be that the two support rollers grip the vehicle wheel laterally. During the subsequent Shorten the long side of the pallet truck frame with the help of the drive Support rollers below the wheel axle on the running surfaces of the wheel. With even more Shortening the frame, the idlers slide under the vehicle wheel and lift this high.

Such a lift truck requires four castors for its function. Swivel castors are by the nature of their construction and especially when they are used for the support of heavy weights and rough workshop operation are suitable, expensive. There are at least two for a routing Vehicle wheels supported must be, i.e. eight swivel castors are necessary, is maneuvering with the known pallet truck expensive. In addition, the known pallet truck is relatively wide and can if the vehicle wheel is against an obstacle, for example a curb, cannot be pushed against the wheel. The width of the known pallet truck leaves also not decrease at will, because on the one hand the distance between the two next to each other lying swivel castors is predetermined by their swivel range, and on the other hand the tilting moments acting on the pallet truck must be mastered.

In contrast, the object of the invention is to provide a less expensive device for lifting and supporting wheels of a vehicle.

This task is with the characterizing features of the claim 1 solved.

With the features of claim 1 it is achieved that at each a frame associated with a vehicle wheel only two castors are required. The elimination of two castors per vehicle wheel makes the device cheaper and can also be made narrower. Despite these savings, it is functionally reliable and easy to use.

According to claim 2 is a frame with two castors on one Vehicle wheel attached and to prevent tipping with a preferably telescopic adjustable rod from below on the inside of the overlying fender splayed. To protect the painted wing from scratches, the rod can at least be encased in rubber in the upper area. The rod is preferably cranked, so that they can be attached to the fender formations by turning them in their holder Vehicles adapted and from the inner wheel arch side on the Eot- wing can be brought to the plant.

Another anti-tip device according to claim 3, which has a contact with Avoids painted body parts, consists in a form-fitting the vehicle tires rear-reaching and telescopically adjustable bracket.

The bracket width can be adjusted to adapt to the respective tire width be made.

Another version of a bracket to adapt to different Tire width is that the bracket with a leg part on the outside of the vehicle wheel leads upwards and with a second leg part is bent over the wheel in such a way that that the first and second leg part form an angle smaller than 90.

The bracket can with a corresponding length of the second leg part be placed over tires of different widths, with the tires between the leg parts extending at an acute angle to one another are clamped. The coat hanger but can have one of the smallest possible tire widths starting from the first leg part corresponding length at right angles and only then an acute angle with the first Leg part be bent to form. With this design, the bracket also bring into narrow wheelhouses.

A preferred embodiment according to claim 4 consists in two rack frames to connect two swivel castors with a yoke. Receives through this connection it is advantageous to have a tilt protection and also a mobile unit, a kind of lift truck, on which the lifting devices for the two vehicle wheels that are always lifted up anyway are arranged on an axis.

With the help of the adjustable yoke rod according to claim 5, the Frame to be brought to the vehicle wheels. Nested ones are advantageous Square tubes used, which are chosen in their cover so that the yoke rod also forms a stable anti-tipping device for wide vehicles. When the vehicle weight loads on the device, the friction caused by the tilting moments is between the sliding tubes so large that a locking device that holds the tubes against each other locked, is not required.

On the outer tube of the yoke rod eyelets can be attached, which then in spite of the adjustment of the yoke rod always the same distance from one another and are therefore suitable for attaching a rigid drawbar.

In an arrangement of the rack frame according to claim 6, the device with an extended yoke rod, encompassing the vehicle, brought to the wheels. In an arrangement according to claim 7, the device from one side to the Vehicle wheels are driven up and can therefore also be used when a The outside of the wheel is against an obstacle, for example a curb. The actuator for the lifting device on the frame that holds the vehicle wheel encompassed from the inside of the vehicle, can come out from under the vehicle be performed in the area of the yoke rod.

With a lifting device according to claim 8, the force for lifting of the vehicle wheel is relatively small, since the vehicle wheel or a tire has to be lifted does not have to be pressed or pushed over rigid axles with friction.

If in the first embodiment, the rod or the bracket to Anti-tip device according to claim 9 on the part of the lifting device that moves upwards is attached, there is no relative movement of the support point to prevent tilting. This largely prevents scratches and paint damage.

Claims 10 and 11 give advantageous designs of lifting devices at.

When the castors are arranged according to claim 12 on the rack frame only small overturning moments occur.

If the device can be used universally for many types of vehicles should be, it may be in the areas in which it is under the vehicle body should not be higher than approx. 16 cm. On the other hand, the diameter should the swivel castors should be as large as possible so that the vehicle can be raised even on uneven floors or can be moved over small thresholds. Therefore, according to claim 13 of The frame does not have to be arranged over the swivel castors as usual, the swivel castors on the other hand, should protrude laterally from the frame in its upper area Plates be attached. This results in a low overall height with large swivel castor diameters achieved.

When using the device on inclined surfaces, according to Claim 14 a stop and / or steering stop device on at least one steering roller be provided. With the help of the stop device, the device and thus the on your stationary vehicle against unintentional rolling away on an inclined surface secured. When moving one with the help of one or more devices When the vehicle is raised transversely to a sloping surface, the vehicle may be due to the Roll away freely movable castors in the direction of the sloping sloping surface. For example is a vehicle whose four wheels are supported by castors and at which is pulled at the front, in the area of the rear axle in the direction of the move the sloping bevel downwards and not on a contour line as a whole be movable. Here, with the help of a steering stop device in the example mentioned at least one steering roll that on the back two wheels unwanted sideways rolling can be prevented.

With the features of claim 15, a simple and very fast created lifting device to be operated. The support devices for the swivel castors are here connected to the frame via hinges. This allows the castors folded away from the frame and thus the frame can be lowered. Of the The frame supports laterally protruding supports, which are on the left in the lowered position and can be pushed to the right of the vehicle's footprint. To the Raising the frame and thus also the vehicle via the supports the support devices for the castors preferably with a removable lever rod folded back into its original position. The two support devices for the Castors that are assigned to a vehicle wheel can advantageously be rigid be connected so that they can be folded together. When raised of the frame must have a locking device for the support devices, for example a latch, may be provided.

On the basis of four exemplary embodiments, the invention is carried out with others Features, details and benefits explained.

1 schematically shows the side view of a first embodiment, Fig. 2 schematically shows the front view of the same embodiment, Fig. 3 on the on the right side the top view of a second embodiment and on the left side the top view of a third embodiment, 4 shows the side view the second embodiment, FIG. 5 the side view of the third embodiment, 6 is a partial view of a fourth embodiment.

In a first embodiment of the invention according to FIGS A lift truck 3 on a wheel 1 of a motor vehicle in the area of a fender 2 scheduled.

The lift truck 3 consists of a frame 4, which extends over two Castors 5, 6 supported on the ground. A jack is attached to the frame 4 7 with its crank drive 8. Connected to the adjustable part of the jack is a supporting structure 9, consisting of a horizontal cross member 10, two of the ends of the cross member 10 approximately in the radial direction of the wheel itself downwardly extending beams 11, 12 and two attached to the beams 11 and 12 and plates 13, 14 that engage under the wheel 1 is a telescopic anti-tip device 15, in which an outer tube 16 with a Locking screw 17 a cranked rod 18 is inserted, which is on the inside of the fender 2 is applied. The castors 5, 6 are on one towards the center of the vehicle protruding arm or plate 19 attached so that they are approximately 3 when the lift truck is attached on a line parallel to the vehicle axis and through the center of the contact area of the vehicle wheel 1 come to rest (Fig. 2). The rack frame 4 is to Reduction of the overall height below the attached arm 19.

The first embodiment of a lifting and supporting device works as follows: With the jack 7 by operating the crank 8, the support structure 9 lowered. The lift truck 3 is then brought up to the wheel 1 and set in such a way that that the two plates 13, 14 engage under the wheel 1. Then the device against the tilting adjusted by the cranked rod 18 from the Tube 16 is pulled and turned until it is on the inside of the fender 2 firmly spread.

With the help of the locking screw 17 it is locked in this position. After these preparations, the wheel 1, the is supported on the plates 13, 14, lifted. The moves too Fender 2 upwards accordingly, so that by connecting the anti-tip device 15 with the support structure 9 no relative movement and thus friction of the fender 2 opposite the rod 18 arises. After this wheel 1 has been lifted, must the second wheel of the same axle can be lifted by another pallet truck. When both wheels are free, the vehicle can be pushed up on the body the freely movable castors 5, 6 can be maneuvered in a tight space.

3, 4, 5, which show two further exemplary embodiments, the reference numerals corresponding to the first embodiment are used again. A right rack frame 20 and a left rack frame 21 are yoke 22 connected. In the left and right parts of Fig. 3 is a second and third embodiment shown with different lifting devices. The right part in Fig. 3 corresponds the lift truck 3 shown in Fig. 1 and Fig. 2 with the exception of the anti-tip device 15, since the yoke 22 acts as a tilt protection here. There is also a jack 7 here attached to the right frame 20, which can be operated by a crank 8.

The support structure 9 can be raised with the jack 7, whereby the wheel 1 is supported on the plates 13, 14. I) he swivel castors 5, 6 are under the plates 19 arranged.

The circles 23, 24, 25 and 26 shown in FIG. 3 illustrate the swivel range of the castors 5, 6.

In the left part of Fig. 3 and in Fig. 5 is a third embodiment a lifting device shown. The left frame 21 consists of one here Outer tube 27 and one in this displaceable inner tube 28, which can be adjusted against each other with the aid of a spindle drive 29. On the side Axes protruding from the outer tube 27 and from the inner tube 28 are each a support roller 30 and 31 stored. The yoke 22 also consists of an outer tube 32 and one in it displaceable inner tube 33. On the outer tube 32 there are eyelets 34, 35 for hanging a Drawbar attached.

The device shown in Fig. 3 operates as follows: The plates 13, 14 and the support rollers 30, 31 are from the frame 20, 21, 22 to the left away.

The entire device is therefore coming from the right under the vehicle moved until the plates 13, 14 and the support rollers 30, 31 each under a wheel Axis come to rest. The device can be adapted to the respective vehicle width can be adjusted by sliding the inner tube 33 on the yoke 22 in or out. That a wheel is raised with the aid of the jack 7, as already described. That other wheel is raised by the fact that with the help of the spindle drive 29 the support rollers 30, 31 are moved towards each other so that the support rollers 30, 31 under the Push the wheel and lift it up. When both wheels are raised, the vehicle can either by pushing on the body or by pulling on yoke 22, for example by hanging a drawbar in the eyelets 34, 35 are moved.

Another exemplary embodiment can be achieved very easily in this way that a lifting device, as shown on the right side of Fig. 3, also arranged symmetrically on the left side instead of the device shown will. Corresponding plates 13, 14 would then also be seen from the left protrude towards the middle. The entire device would then have to be pulled out by pulling out the inner tube 33 are widened from the outer tube 34 and the right frame 20 and the left Rack frame 21 from the outside to the respective wheel by pushing the Inner tube 33 are brought up. Correspondingly, the one on the left in FIG. 3 could also be used Device shown be arranged symmetrically on the right side.

In Fig. 6, the lifting device is a fourth in a partial view Embodiment shown. On a part of a frame 4 are hinge brackets 36, 37 each with two legs 38, 39, 40, 41 and one axis 42, 43 each. One leg 38, 40 of each of the two hinge brackets 36, 37 is on the outside, d. H. on the side of the frame facing away from the vehicle wheel to be lifted% attached so that both hinge axes 42, 43 are horizontal and coaxial. The relative to the frame 4 movable legs 39, 41 also form the Support devices for relatively large castors 5, 6, which are attached to the legs 39, 41 are rotatably mounted on bearing blocks 44, 45. The two legs 39, 41 are connected to a rod 46 on its side facing away from the axes 42, 43. the Rod 46 carries one protruding at right angles from the rod approximately in its middle and in the illustrated unfolded state the hinge brackets 36, 37 essentially lever extension 47 pointing upwards. On the frame 4 there is another angle 48 arranged with legs 49, 50, one leg 49 with the rack frame 4 is connected, and the other leg 50 is a device for Arretieruag des Leg 39 of the hinge bracket 36 carries in its folded position. the Locking device 51 consists of a bolt housing connected to leg 50 52 and a locking rod 53 guided therein, which can be displaced with the aid of a ring 54 is. On the side of the rack frame 4 opposite the swivel castors 5, 6 two supports 55, 56 protruding from the frame are attached at such a distance, that this is a vehicle wheel 1 indicated by dashed lines laterally from below, Left and reach around to the right of the contact area.

In Fig. 6, the two hinge brackets 36, 37 are after the retraction the latch rod 53 has been folded up from the horizontal position. Through this the swivel castors 5, 6 have moved sideways upwards from the frame 4, so that the rack frame 4 has lowered.

Stops can be provided that the folding movement of the hinge bracket 36, 40 limit upward so far that the frame 4 lowers but straight is not yet on the floor. As a result, the rack frame 4 can be lowered in its Position can still be driven and conveniently brought to the vehicle wheels 1. For lifting the frame 4 and thus over the supports 55, 56 of the vehicle wheel 1, a long lever tube (not shown) is placed on the lever extension 47 and moved down. As a result, the legs 39, 41 also become the hinge angle 36, 37 moved downwards, the castors 5, 6 in the direction of the rack frame 4 moved and this lifted up against the supporting castors 5, 6. Included place the supports 55, 56 on the side of the vehicle wheel 1 and lift it with high. When the legs 39, 41 are placed approximately horizontally, there is a lock the locking rod 53 is moved over the leg 39. A corresponding locking device 51 can also be attached to the other leg 41. For locking could also laterally on the frame 4 and / or on the legs 39, 41 plates with holes be attached, can be inserted into the locking pins. It would also be possible to fold the castors 5, 6 so far under the frame 4 against a stop, that the footprints of the castors 5, 6 from the vertical projection of the Axes 42, 43 starting from the ground, stay in the direction of the supports 55, 56. at this embodiment, the castors 5, 6 remain in this raised position and support themselves on the stop, so that an additional Locking option can be omitted.

The supports 55, 56 can be adapted to very different vehicle wheel sizes slidable on the frame 4 or in bores of the frame 4 reversible bar be.

With the castors 5, 6 must in this embodiment before lifting of the vehicle can no longer be driven under the vehicle frame. That also falls the limit of about 16 cm for the height of the device away. It can therefore be very large swivel castors 5, 6 are used, with which also comfortable over less smooth Areas and over smaller thresholds can be driven. Starting a certain here Swivel castors that can still be used are also swivel castors with pneumatic tires bring further driving comfort, available in stores. In addition, when using Lift the device more easily from large castors 5, 6 with a large contact area.

As the above description illustrates, a Device according to the invention for lifting and supporting wheels of a vehicle characterized in that only two castors are required for each raised vehicle wheel using a number of different lifting devices can.

Claims (13)

Claims device for lifting and supporting wheels of a vehicle, with one facing the ground via castors arranged one behind the other supported frame on which a lifting device for a vehicle wheel is mounted is, characterized in that each rack frame (4; 20, 21) has only two swivel castors (5, 6) are assigned and that on the frame (4; 20, 21) a device for Tilt lock (15, 22) is attached. 2. Apparatus according to claim 1, characterized in that the device to prevent tilting (15) one which can be inserted under a fender (2) of the vehicle and to the rack frame (4) connected rod (18). 3. Apparatus according to claim 1 or 2, characterized in that the device for securing against tilting (15) is a telescopically adjustable vehicle wheel (1) is behind the frame and attached to the frame (4). 4. Apparatus according to claim 1, characterized in that the device a connecting frame (20, 21) that is parallel to one another to prevent tipping Yoke (22) is. 5. Apparatus according to claim 4, characterized in that the yoke (22) consists of two nested adjustable tubes (32, 33). 6. Apparatus according to claim 4 or 5 with laterally C-shaped open Rack frame, characterized in that the two rack frames (20, 21) so on Yoke (22) are arranged that the C-shaped open sides against each other to the yoke or point towards the center of the vehicle 7. Apparatus according to claim 4 or 5, characterized in that that the two frame frames (20, 21) are arranged on the yoke (22) that the C-shaped open side of a rack frame (20) towards the yoke or vehicle center and the C-shaped open side of the two th rack frame (21) to the yoke or vehicle exterior side shows. 8. Device according to one of claims 1 to 7, characterized in that that the lifting device from a fixed to the rack frame (4; 20, 21) first part (7), one of the vehicle wheel (1) engaging under and in the lifting direction upwardly movable second part (9) and one of the first and second parts movable over load-bearing connecting adjusting device consists. 9. Apparatus according to claim 8, characterized in that the rod (18) or the bracket for securing against tilting is attached to the second part (9). 10. Apparatus according to claim 8 and 9, characterized in that the adjusting device is a spindle. 11. Device according to one of claims 8 to 10, characterized in that that the adjusting device is a standard part of a jack (7). 120 device according to one of claims 1 to 11, characterized in that that the two swivel castors (5, 6) are arranged on the rack frame (4; 20, 21), that when the vehicle wheel (1) is raised under its footprint or on a Line in the area of the contact area parallel to the vehicle axis. 13 Device according to one of Claims 1 to 12, characterized in that that the castors (5, 6) protrude laterally from the frame (40y 20, 21) Plates (19) are attached. Device according to one of claims 1 to 13, thereby characterized in that at least one steering roller (5, 6) with a stop and / or steering stop device 4 15 Device according to one of Claims 1 to 14, characterized in that that the castors (5, 6) are arranged on support devices (39,41) with the rack frame (4) are connected via hinges (36,37) so that the rack frame (4) when folding the hinges (36,37) can be lowered or raised and that a Device for locking the support devices (39, 41) in the raised state of the rack frame (4) is provided.