DE1484635C - Trench excavator with a boom mounted pivotably in a vertical plane at the front end of the chassis - Google Patents

Description

3 4

means of pivotable arms 22 is attached. The excavator chain .18 is attached to each one with a fluid arm 22, a toggle rod 26 is driven at the point 24 motor 60, which can be rotated with a pump 61 attached, which is itself bound at the point 26 a, which is driven by a gear 61 a the chassis 10 is articulated. is, the gear 61a in turn by the

A double-acting liquid motor 28 is driven on 5 motor unit 14. The liquid one end 28 α with the chassis 10 and drives the keitsmotor 60 via a chain sprocket the other end 28 b to the articulated rods 26 overall at 63, which is rotatably arranged on the shaft. 39 articulated to the transport wheels and the chain wheel 63 also drives a further chain axles 20 α to raise and lower. At the wheel 68, which is fastened on a shaft 69, on the outward stroke of the liquid motor 28, the transport wheels of the drive sprocket 34 of the excavator chain 18 are supported in the dash-dotted lines.

Depicted position lowered and driven in the retraction stroke of the one by means of a chain wheel 82

Liquid motor 28 in the solid lines earth screw conveyor 76 with a support arm 78 and

Lifted position shown, in which the transport wheels a scraping device 77 are provided on

lie over the chains 12. 15 of the point 77 α on a bearing by means of rollers 77 c

The excavator chain 18 is arranged by a boom 30 th carrier 77 b . The carrier 77 &

carried, which is of elongated box-like design has an articulated head part 77 d, 77 df . the

and its main part 32, a drive sprocket 34 head portion 77d 'has a stop 77 h. for

having. The front end 36 of the boom 30 is the excavated material are guide plates 79

adjustable with respect to the main part 32 and arranged by ao.

Bolts 36 a fastened and carries a wheel 38. The one for transport is pivoted horizontally

Boom 30 is rotatable on a shaft 39, the transverse boom 30 by a ratchet mechanism

runs to the excavator and swiveling in lowering lockable. An attachable pull rod 110 is

right level allowed. Connected to the boom 30 via the drive sprocket by means of bolts 112.

34 and the wheel 38 runs the excavator chain 18 in the form 25

a link chain 40 to which buckets 42 are attached. be connected for quick transport, and

At the upper end of the boom 30 are lugs 48 the excavator can then after lowering the provided, which by a cross strut 48 α mitein- transport wheels 20 to another location beander are connected. With these approaches 48 is to be put away. It can be seen that with an Aufzum Raising and lowering of the boom 30 at the 30, pivoting the boom 30 around the shaft 39 Set 50 a bidirectional fluid through fluid motor 52, a clutch claw keitsmotor 52 articulated, which at the point 111 easily on the coupling part of the tractor P 54 is connected to the excavator structure 55. can be hung.

1 sheet of drawings

Claims (2)

1 2 considerable difficulties, since it is necessary when lowering the pair of transport wheels in the transport position, the one on the pair of transport wheels 1. Trench excavator with an excavator resting at the front end in its approximately horizontal position of the chassis in a vertical plane to keep it pivoting against tipping and to hang it on a boom mounted on a bar that lifts one side of the towing hook of the tractor on one side the boom's revolving excavator chain In addition, the excavator boom is carried in the transport, and with an excavator chassis and position of the excavator upwards, which has an unfavorable effect on the chassis that can be raised and lowered during the transport journey, arranged pairs of transport wheels with pneumatic tires, whichever if the excavator boom has a great length, ches from a raised rest position in such a way any heavy landing gear is raised and then after the Gra The excavator can be easily attached to the tractor by means of the 15, whereby the trench excavator always assumes a stable position during the process of transporting pairs of transport wheels on the road.
can be, characterized in that the solution to this problem is according to the Erdaß at the free end of the boom (30) is that at the free end of the boom a coupling claw having a pull rod having a coupling claw (110) can be attached, that further the boom (30) can be attached in such a way that, furthermore, the boom can be swiveled up from a downwardly inclined work position into a substantially horizontal transport position in such a way that the transport position can be swiveled up the coupling claw 45 which is attached to the free end of the boom at the free end of the boom and which engages the coupling claw 45 on the tractor with the coupling part arranged on the tractor (P) brought who-coupling part can be brought into engagement, who can, and that on the excavator structure on the one hand and that on the excavator structure (55) on the one hand and the boom on the other hand locking elements and the boom (30) on the other hand locking elements of a locking device are arranged so that the boom after coupling to the ( 104) are arranged in such a way that the boom (30) locks the tractor with the excavator structure after it has been coupled to the tractor (P). can be locked to the excavator body (55) . can. _ Tractor so simple that this work 2. Trench excavator according to claim 1, characterized in that 35 if the excavator operator alone can be carried out. this characterized in that the pair of transport wheels (20) is due to the fact that when attached to the on the chassis (10) so. is arranged that it tractor the boom first in an im during the transport journey below the essential horizontal transport position high-Mbtoraggregates (14) of the excavator is located. is pivoted and attached to the free end of the 40 claw attached to the boom with the coupling part on the tractor in Intervention is brought; then the boom locked with the construction of the excavator, and only then is the excavator on its transport wheels The invention relates to a trench 45 raised. Since the excavator boom is used as a drawbar excavator with one at the front end of the drive, during the transport journey it does not provide frames that can be pivoted in a vertical plane over the outline of the excavator and the pull boom, the one that protrudes into the pivoting plane of the excavator Obstacle.
casually revolving excavator chain carries, and with one expedient is the pair of transport wheels Excavator chassis and one on the chassis lift 50 on the chassis so that it is during and lowerable air-tire transport - the transport ride below the motor unit of the pair of wheels, which is from a raised resting excavator. Thereby the transport wheel position lies so lowered and against the ground paired below the heaviest part of the excavator can be pushed so that the excavator including and thus as close as possible to the excavator's center of gravity, of the excavator chassis is raised and then 55 An exemplary embodiment of a trench excavator according to after attachment to a tractor by means of the invention is explained in the drawing. It shows of the pair of transport wheels on the road transport- F i g. 1 is a side view of the trencher and can be animalized. F i g. 2 one the attachment of the trencher US Pat. No. 3,057,088 discloses a device according to FIG. 1 reproducing on a tractor such trencher has become known, the ins- 60 partial representation. special is intended for lighter work and the in F i g. 1 illustrated trench excavator has a from an operating chassis 10 which strides on the ground and which is carried by chains 12. operator is steered and operated. This at the front end is on the chassis 10 Trencher has a motor unit 14 arranged for road transport and on the outward chassis an excavator chain 18 with a liftable and lowerable end of the chassis 10 arranged a pair of pneumatic transport wheels. intended. In this known excavator, the trailer prepares a pair of transport wheels 20 is on an axis 20 a conditions of the excavator on the tractor, which can be pivoted on the chassis 10.