DE202018001212U1 - carrier system - Google Patents

Abstract

Carrier system (1) which is arranged on the chassis longitudinal member of a trailer, consisting of a spring bracket, which facing in the direction of travel in front of him axis (A, B and C) facing a arranged at its lower end lower support (3) which parallel to the longitudinal axis of the chassis longitudinal member is arranged and is to be arranged optionally in two receptacles (3a and 3b), wherein the recordings the functions as axle jack and emergency (3a) and as a wheel lift (3b) is assigned, and the support (3) so in the To arrange receptacles (3a and 3b) is that it projects in the region of the respective air bellows (2a, 2b and 2c) under the respective axle guide (4).

Description

The invention relates to a carrier system for lifting vehicle axles in multi-axle trailers, in particular a spring bracket with axle lift and emergency function.

It is known to carry out an axle as a lifting axle in trucks or semi-trailers. This ensures that it does not constantly run along the road, but can be lifted at low load of the vehicle in the air.

Since the wheels of the respective do not rotate in the raised state, the tire wear is reduced and fuel saving is achieved through reduced bearing and tire friction.

In addition, a lift axle as traction help, z. B. on snowy roads, are used by the axle pressure of the adjacent drive axle is increased by lifting the lift axle for starting.

Such Achsanhebevorrichtungen are known for example from the DE3309729 A1 , This describes a Achsanhebevorrichtung for an air-suspension axle with the axle body engages under lever and a lifting bellows, in which a L-shaped lever (7) with its long leg under the lifting bellows (8) on one, this cross-bracket (11) and stored its short leg (14) with a pivoting cylinder (9) under the axle body (15) is pivotable.

Also known is a Achsanhebevorrichtung for air suspension axles (3) of trucks from the EP 332037 A2 with a lifting bellows (7), which is supported one end on the vehicle frame and other ends with the axis (3) cooperates to be installed in most vehicle frames, in particular when the axis (3) is arranged below a propeller shaft. For this purpose, the axle (3) has at least one rigid holder (13) connected to it and projecting in the vehicle longitudinal direction from the axle (3), against the underside of the lifting bellows (7) facing the roadway for lifting the axle (3) can be pressed.

A fastening device for a lifting means (4) for lifting rolling axles of commercial vehicles, trailers and semi-trailers is described in the EP1332953 wherein said lifting means (4) is adapted to act on the leaf spring arm (3) connected to the roll axis to be lifted, said leaf spring arm (3) being pivotally mounted on the support (1) of the pneumatic suspension, in cooperation with a transverse pin (Fig. 2), said mounting means comprising a carrier (5) for the lifting means (4) incorporating two upwardly directed side arms (6) each closed at its free end with a bow in the form of a hook (7) in that the hooks (7) are of the type which permit the connection of these hooks with the overhanging parts which protrude from the support (1) of the pneumatic suspension in such a way that the lifting means engage with the support (1) of the pneumatic suspension can be connected by simply hanging on the said protruding parts.

In DE 60003694 In the drawings, there is described an axle / suspension assembly having a suspension beam for mounting an axle on the underside of a vehicle and an axle lift assembly comprising force generating means that is operable to generate a force for lifting the suspension beam, characterized in that the force generating means is contiguous is disposed on and below the carrier and acts substantially horizontally on a support that projects downwardly from the carrier to lift the carrier, wherein a space below the carrier on the other side of the downwardly projecting support the arrangement of a brake chamber with Fahr / Parking double function also adjacent and below the carrier allows.

Also occur regularly on truck trailers and semi-trailers damage to individual wheels, tires or axles damage. As a result, drivers are usually forced to repair this damage on the highway or highway. The drivers are exposed to a high risk from flowing traffic.

Due to the standing of the truck not infrequently also traffic jams are triggered, thus triggering a further hazardous situation.

To avert this direct danger, it is noteworthy that the vehicles with the defects are often driven on until they reach a more suitable location for the repair. As a result, in turn, as well as by occurring tire fires, damage to the vehicle and on the road.

In DE 60003694 In the drawings, there is described an axle / suspension assembly having a suspension beam for mounting an axle on the underside of a vehicle and an axle lift assembly comprising force generating means that is operable to generate a force for lifting the suspension beam, characterized in that the force generating means is contiguous arranged on and below the carrier is and acts substantially horizontally on a support projecting downwardly from the carrier to lift the carrier, wherein a space below the carrier on the other side of the downwardly projecting support, the arrangement of a brake chamber with driving / parking double function also adjacent and allows below the carrier.

DE 69102784 describes a uniform handling device for the rear axle of a road vehicle or a trailer.

This invention relates to a unit for actuating a wheel axle on the rear chassis of a road vehicle or trailer with a suspension arm, an air spring bellows and its shock absorbers mounted between a hinged return member and the suspension arm, the latter constituting a tiltable suspension unit provided by a pneumatic actuator is tilted, which acts directly on the wheel axle, the return part or the end of the suspension arm, which are successively blocked by a lock with pneumatic control device.

From the DE69102784 a solution is known which describes a variant for the transport of truck trailers by means of a railroad loading.

In this case, the lorry is fed to a track system of the web.

The truck is not moved on its own wheels, but he is placed on the front and rear of the chassis of the train and then transported on rails. For this, the axles are raised with the wheels, so that they do not collide with the railway sleepers.

In this device for the rail loading is a lifting device, which lifts the vehicle by an additionally installed air bellows.

This device is not applicable to road traffic.

Also known is a solution for Hubbegrenzung at a rail loading for all wheels of the vehicle at the same time, described in the GB 2 345 477 ,

This solution describes a solution in which the truck is disconnected from the semi-trailer and the air and the electrical lines have been separated and the air is released from the bellows and thus they are depressurized. Now the clamps engage, so that the air bellows when lifting the entire vehicle for moving on the track hanger can not be pulled apart and not damaged.

The vehicle is thus not ready to drive on the road.

A disadvantage of all these variants of lift axles is the static design, since the lever action for lifting the wheel has a very long lever and therefore produces a poor force effect.

In the known devices for lifting a single axis, the relatively complex technical solution is disadvantageous, which is integrated into the vehicle and thereby brings a high cost.

The invention has for its object to propose a device which overcomes the existing disadvantages of the prior art, causes relatively low costs and thereby overcomes financial acquisition obstacles in the hauliers.

According to the invention this object is achieved by a device according to claims 1 to 14.

Subsequently, this device is based on the 1 to 5 and the embodiment will be explained in more detail.

• 1 das Trägersystem mit zwei angehobenen Achsen A und B in einer werksseitigen Ausstattung mit dem erfindungsgemäßen Trägersystem 1.
• 2 zeigt das erfindungsgemäße Trägersystem mit einem defekten Reifen auf der mittleren Achse B von drei Achsen und Nachrüstung mit dem erfindungsgemäßen Trägersystem 1,
• 3 zeigt das erfindungsgemäße Trägersystem im Normalzustand bei unbeschädigtem Rad und nicht angehobener Achse,
• 4 zeigt das erfindungsgemäße Trägersystem bei beschädigtem Rad und
• 5 zeigt das erfindungsgemäße Trägersystem mit angehobener Achse.

It shows

• 1 the carrier system with two raised axes A and B in a factory-equipped with the carrier system 1 according to the invention.
• 2 shows the carrier system according to the invention with a defective tire on the central axis B of three axes and retrofitting with the carrier system 1 according to the invention,
• 3 shows the carrier system according to the invention in the normal state with undamaged wheel and not raised axis,
• 4 shows the carrier system according to the invention with damaged wheel and
• 5 shows the carrier system according to the invention with raised axis.

The suspension on axles of truck trailers and semi-trailers consists, simplified in 1 shown, from a chassis longitudinal member, axles A, B and C and a respectively associated with an axis and arranged between these as a spring element Luftbälgen 2a . 2 B and 2c , which preferably on one of the axes A, B and C each attached wishbone 4 is mounted. Here are the bellows 2a . 2 B and 2c connected to the central pneumatic system of the vehicle, which controls the air pressure in the bellows 2a . 2 B and 2c controls.

The device according to the invention consists of a carrier system 1 , which is arranged on the chassis longitudinal member of a trailer, from a spring bracket, which facing the direction of travel in front of him axis A, B and C facing a arranged at its lower end lower support 3 has, which is arranged parallel to the longitudinal axis of the chassis longitudinal member.

This edition 3 is optional to arrange in two shots 3a and 3b , In the recording 3a will be the edition 3 used when the device according to the invention is to be used as an axle jack or an insert is provided as emergency. If the carrier system according to the invention is to be used as a wheel lifter in case of damage, then the edition 3 in the recording 3b used.

The edition 3 is in the pictures 3a and 3b to arrange them in the area of the respective air bellows 2a . 2 B and 2c so under the respective wishbone 4 protrudes.

The device according to the invention is behind the bellows 2a . 2 B and 2c of the respective wheel so arranged that the carrier system 1 so far to the respective Luftbalg 2a . 2 B and 2c the respective wheel is introduced, that the lower edition 3 , which is designed so that they with their respective axis A, B or C facing the end of the respective air bellows 2a . 2 B and 2c supporting area of the wishbones 4 the respective axis A, B and C of the respective wheel engages.

According to the invention it is possible to use the Trägerstems invention as axle lift.

Up to a load of up to 7.5 t, it is possible to run trailers on one axle and raise one or two axles.

Now the axles A and B of the vehicle should be raised ( 1 ), are the bellows 2a and 2 B the axes to be lifted A and B vented. This increases the pressure in the air bellows 2c the continuing axis C by about 0.8 bar. As a result, the in-service air bellows stretch 2c about 4 cm and the trailer is raised by 4 cm.

In this function, the editions 3 in the recording 3a arranged for the axle lift and the emergency function. The axes A and B are doing with their axle links 4 on the pads 3 filed and thereby fixed at this height.

By additional pressurization of these two bellows 2a and 2 B If necessary, they can be raised again by approx. 4 cm.

By means of an already used 0-point adjustment with height limitation, the increase is limited to 8cm. Less the game in driving, which is about 3cm, the unnecessary axes are now raised by about 5cm.

Now a further journey with raised axes A and B over longer distances is possible.

In a particular embodiment of the solution according to the invention to equip the trailer so that the axle jack function is automatically activated by means of an air spring valve with zero point detection and stroke limitation.

For use of the carrier system according to the invention 1 as emergency running device ( 2 ) are the conditions during vehicle operation on all axles 3 in the recording 3a arranged for the axle lift and the emergency function.

If a puncture occurs on a wheel of a multi-axle trailer, the affected axle A, B or C is lowered on the damage side. The wheel is supported by the respective wishbone 4 on the pad 3 thus ensuring the height adjustment of the damage side of the respective axis A, B or C.

With the defective wheel lowered by, for example, 3 cm, it is possible to reach the next parking lot without repair.

In a particular embodiment of the carrier system according to the invention 1 is on the carrier system 1 a pressure switch 5 arranged, which is activated when a loss of air on the tire lowering on the support 3 is recognized and thus indicates the damage to the driver.

Another possible application of the carrier system according to the invention 1 exists in the function of a wheel lift ( 5 ).

As described above, the edition 3 in normal use arranged in the receptacle 3a for the axle lift and the emergency function, ie the lower position compared to both shots 3a and 3b ,

If a defect has now occurred on a wheel or axle side, the air bellows become 2a . 2 B and 2c vented on the entire trailer, where this lowers. Now the edition 3 in the upper intake 3b plugged in.

To lift the wheel, the bellows 2a . 2 B and 2c again pressurized and raised to the neutral ride height. By supporting the wishbone 4 on the affected wheel on the pad 3 the defective wheel thus has no contact with the roadway.

Below, the device according to the invention will be explained in more detail by means of embodiments.

As in 1 shown forms the carrier system 1 the spring bracket of the arranged in the direction of travel behind him axis. Thus forms in a multi-axle trailer according to 1 for example, the carrier system 1 the axis A at the same time the spring bracket for the axis B, which is the support system 1 the axis B at the same time the spring bracket for the axis C.

For the axis C can thus a simplified carrier system 1 be used without function of a spring bracket.

By this embodiment of the carrier system 1 Without function of a spring strut it is suggested that this variant 1a can be retrofitted to trailer previous version. In this case, the carrier system according to the invention 1a mounted on the already existing on the vehicle spring bracket so that the for the functionality of the carrier system according to the invention 1 required position and stability is realized.

In this case, the carrier system according to the invention 1 preferably designed U-shaped, wherein the open side of the U-profile of the respective air bellows 2a . 2 B and 2c is facing.

The carrier system 1 preferably corresponds in length to the height of the bellows 2a . 2 B and 2c in empty, compressed state.

As in the different vehicle types according to the respective requirements also different pneumatic systems with different sized air bellows 2a . 2 B and 2c come to be used, it is proposed the carrier system according to the invention 1 to be designed so that they are at different sized air bellows 2a . 2 B and 2c can be used.

To secure the position of the support 3 in the recordings 3a and 3b can fixations for the pads 3 to be ordered.

It is advantageous with the carrier system according to the invention 1 possible to put the damaged vehicle into a state in a short time, with which it is possible to spend the vehicle at a location suitable for further repair or by the reduction of individual axles a reduction in tire wear and a fuel saving by reduced storage and to achieve tire friction.

As the carrier system according to the invention 1 is very inexpensive, it is also advantageous to equip any vehicle, regardless of whether it is the device to the variant for different types of vehicle or a vehicle-specific configuration of the device with such a device.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 3309729 A1 [0005]
• EP 332037 A2 [0006]
• EP 1332953 [0007]
• DE 60003694 [0008, 0012]
• DE 69102784 [0013, 0015]
• GB 2345477 [0020]

Claims (8)

Carrier system (1) which is arranged on the chassis longitudinal member of a trailer, consisting of a spring bracket, which facing in the direction of travel in front of him axis (A, B and C) facing a arranged at its lower end lower support (3) which parallel to the longitudinal axis of the chassis longitudinal member is arranged and is to be arranged optionally in two receptacles (3a and 3b), wherein the recordings the functions as axle jack and emergency (3a) and as a wheel lift (3b) is assigned, and the support (3) so in the To arrange receptacles (3a and 3b) is that it projects in the region of the respective air bellows (2a, 2b and 2c) under the respective axle guide (4). Carrier system (1) according to Claim 1 according to which the trailer has an air spring valve with zero-point detection and stroke limitation, by means of which the axle jack function is automatically activated. Carrier system (1) according to Claim 1 comprising a pressure switch 5, which is activated when, due to a loss of air on the tire, a lowering on the support (3) is detected and thus indicates the damage to the driver. Carrier system (1) according to Claim 1 in which the carrier system 1 forms the spring bracket of the axle arranged behind it in the direction of travel. Carrier system (1) according to Claim 1 in which, in the case of multi-axle trailers, the support system (1) of the first axle (A) simultaneously forms the spring bracket for the following axle (B). Carrier system 1 according to Claim 1 , in which multi-axle trailers for the last axle (C) a simplified support system (la) is used without the function of a spring bracket. Carrier system 1 according to Claim 7 , which is to be retrofitted to trailer previous version when running the carrier system (la) without function of a spring bracket. Carrier system 1a after Claim 7 , which is mounted on the already existing on the vehicle spring bracket so that for the functionality of the carrier system (la) required position and stability is realized.

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