DE2648506A1 - VEHICLE TRAILER - Google Patents

Description

Meissner & Meissner 2 6 A 8 5 O

PATENT AGENCY OFFICE

BERLIN - MUNICH

PATENT LAWYERS

DIPL-ING. W. MEISSNER (BLN) DIPL-ING. P. E. MEISSNER (MCHN) DIPL-ING. H.-J. PRESTING (BLN)

1 BERLIN 33, HERBERTSTR. 22nd

Your sign Your letter from our sign Berlin, the CC. AROUND.

Bk-27O73

York Trailer Company Limited

Nothallerton , DL? 8 UE, Yorkshire, England

Vehicle trailer

The invention relates to vehicle trailers in general and to semi-trailers in particular. Semi-trailers are usually provided with one or more landing legs at the front end that form the front part of the semi-trailer when the tractor is uncoupled.

The landing legs can be switched between an operating position in which they attack the ground and carry the semi-trailer, and an inoperative position in which they are off the ground be kept away after the tractor is coupled and while the trailer is being towed, be moved. This movement of the landing legs is usually done by hand, usually winding up and down of the legs e.g. durr.h levers or lyres and intermediate gears. However, this way of working requires a lot Time and strength.

709817/0377

BORO MONKS: TELEX: TELEGRAM: PHONE: BANK ACCOUNT: CHECK ACCOUNT: 8 MONKS 22 1-858 44 INVENTION BERLIN BERLINER BANK AG. • W. MEISSNER, BLN-W ST. ANNASTR. 11 INVEN d BERLIN 030/885 60 37 BERLIN 31 122 82-109 TEL .: (»S / 22 3D 44 030/086 23 82 305716000

A semi-trailer according to the invention with at least one landing leg is characterized in that a electric motor that or the landing leg between his or her operating position and the inoperative position emotional.

Preferably, each landing leg is telescopically extendable and of conventional design. The engine, which is preferably se is reversible so that he can both extend and retract the landing leg, a DC voltage gap field motor can be.

The power source for the motor preferably includes a 12 or 24 volt source that powers the battery of the Be a tractor and is connected by means of a corresponding plug-in device, or one on the semi-trailer can be a trailer-mounted battery that is charged via a blocking diode. The drive can be a reduction gear contain its ratio of the power of the engine and the size of the one or the other The load to be borne depends on the legs.

The motor can drive the landing leg by means of a belt that allows slippage when the leg does the Limit of his exit or retreat distance has enough, so that a disturbance is prevented. But it can also or additionally be an automatic Switch to switch off the drive when these limits are reached through the land leg.

Preferably, the drive contains a device by which the landing leg or legs are raised by hand

709817/0377

or can be lowered if the engine or power source fails. This facility owns the Form of an extension of a shaft on the drive, with a threaded bushing or the like. On the extension is provided so that the shaft can be rotated e.g.

The drive can be used to raise and lower the landing leg or legs by means of a corresponding switch and be operated by a key switch or the ignition switch, which prevents unauthorized use. The direction of movement selected by the switch provides a signal to a live solenoid, which this Execution order effected.

The invention is described with the aid of the drawings. In these is:

Pigur 1 a vertical section through two landing legs and an associated drive on the semi-trailer according to the invention;

FIG. 2 shows a section through a second exemplary embodiment of a drive for a landing leg;

The landing legs 2 and 4 are, as Figure 1 shows, extended or retracted by turning a horizontal shaft-6, which is connected to an electric motor 10 by means of a V-belt 8.

The landing legs 2 and 4 are the same and each leg has an outer sleeve 12 and a telescopically gripped one Inner part or leg 14 that goes into a shoe

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that should rest on the ground when the landing leg is extended.

The inner legs are each held by a thread socket 18 carried, which engages a Hubeewindespindel 20, so that by rotating the spindle 20, the bushing 18 and from this the separation bone 14 · moves according to the direction of rotation moved up or down. The spindle is rotatably mounted in a bearing 22 on a plate 24, which is connected to the outer leg sleeve 12 and an axial displacement of the spindle 20 with respect to the outer leg sleeve 12 prevented.

The spindle 20 is secured by a self-locking nut 26 held in their position in relation to the bearing 22, which acts via a bevel gear 28, which in itself on the? / Elle 6 located pinion 30 engages.

The shaft 6 also carries a roller 32 with the Belt 8 is connected, and a smaller pulley 34- that is attached to a shaft 36 of the photo 10.

Thus, if energy from a source (not shown, but which is usually the tractor's battery, which pulls the semi-trailer) is placed on the motor 10, the shaft 36 rotates and thus drives the shaft 6 over the belt 8 on the pinion 30 can thus also rotate, the wheels 28 and with them the spindles 20, whereby the inner legs 14 are raised or lowered with respect to the outer sleeves 12, which with respect to the Semi-trailers are fixed.

On the shaft 6 there is an extension 38 which

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a σα 3 drat is before it has the end A-O, at which a corresponding Lyre can be attached to rotate the shaft for raising and lowering the inner legs 14 by hand to be able to.

If the load on the legs becomes too heavy, e.g. wenr. If you have lifted the trailer sufficiently, the belt 8 will slip to protect the engine.

Figure 2 shows a modified drive for raising and lowering the legs to be used on a heavy semi-trailer. A pinion 4-6 p-carried by the shaft 4-6 kär: mt with a gear 4-8, which is located on a first intermediate shaft 50. The small gear 52, which is connected to the gear 4-8, meshes with a gear 5 ^ 5 - which is located on a second intermediate shaft (56. Fit the gear 5 ^ - e-vr smaller ten wheel 58 is connected, which with the gear 60 kämnt, which is ^{verbünde ^ with a 111} Ubspindel 62, which is mounted in bearings 64, which engages a (not shown) threaded bushing, which is attached to buckets (not shown) landing leg.

The overall transmission ratio from the wotor to the lifting spindle depends on factors such as that of the legs Load and can be on the order of 80: 1.

There is an extension on the first intermediate shaft 50 68, which in the same way as the extension 38 (Pig. 1) also extends the landing legs through Hand can be used. The TTotore 10 and 4-2 of the The embodiments are reversible and DC gap field motors.

- patent claims -

709817/0377

Claims (7)

Meissner & Meissner " _{c / o} , _ni PATENT AGENCY OFFICE BERLIN - MUNICH PATENT LAWYERS DIPL-ING. W. MEISSNER (BLN) DIPL.-ING. P. E. MEISSNER (MCHN) DIPL-ING. H.-J. PRESTING (BLN) 1 BERLIN 33, HERBERTSTR. Your sign Your letter from Unterzeichen Berlin, the Bk- 27073 Patent claims: f 1J half-trailer with one or more landing legs, thereby characterized in that an electric motor drives the legs (10) with a reduction gear moved up and down. 2. Trailer according to claim 1, characterized in that the drive contains one or more belts (8) which can slide if the load exceeds a given value ο ο Trailer according to Claims 1 and 2, characterized in that that the motor (10) is reversible. 4. Trailer according to the preceding claims, characterized characterized in that the motor (10) is driven by a normal battery, which is from the trailer or from carried by the tractor that is connected to the trailer 5 · Trailer according to the preceding claims, characterized in that with two landing legs (2, 4) these have a common motor (10). 709 * 17/0377 BORO MONKS: TELEX: TELEGRAM: PHONE: BANK ACCOUNT: CHECK ACCOUNT: B MONKS 22 1-656 44 INVENTION BERLIN BERLINER BANK AG. W. MEISSNER, BLN-W ST. ANNASTR. 11 INVEN d BERLIN 030/885 60 37 BERLIN 31 122 82-109 TEL: 088/328544 030/886 23 82 3695716000 6. Trailer according to the preceding claims, thereby marked that the landing leg or legs (2,4) can also be operated by hand. 7. Trailer according to the preceding speeches, thereby characterized in that the landing leg or legs (2,4) are telescopic, and the motor (10) is used to move the inner part (14) up and down in the outer (12). Dipl.-lng.iP! 709817/0377