JPH03233003A - Sleeper exchange bucket device - Google Patents

Abstract

PURPOSE:To make grasping operation easier as well as prevent the falling-down of sleepers by a method in which the piston lever of a cylinder provided to the back upside of a bucket is connected to sleeper supports provided in a vertically rocking manner on the upper both sides of the bucket. CONSTITUTION:A sleeper support 27 with grasp arms 26 is attached to a verti cally rocking fitting bracket 24 provided to the upside of the back 20 of a bucket 17. The piston lever 36 of a cylinder 36 supported in a vertically rocking manner by a paired of fitting seats 29 on the upper both sides of the back plate 20 is connected to the bracket 24 by pins 37. By expanding or contracting the lever 36, the support 27 is vertically rocked around the pin 25 in relation to the bucket 17 and sleeper is grasped by the support 27 and the both-side plates 21 of the bucket 17. The contact condition between the support 27 and the plates 21 is kept constant all the time regardless of the rocking angle of the bucket 17 and the attitude of the arm 15.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a bucket device for exchanging sleepers that support railway rails.

[Conventional technology]

Railway rails are laid over sleepers arranged on the track bed, and after long-term use, the rails, track bed, and sleepers must be replaced.

If the rails are removed and worn when replacing the sleepers mentioned above, you can easily dig out the gravel around the sleepers with the bucket of a power shovel, insert new sleepers, and replace the sleepers, but removing the rails is troublesome. Therefore, it is extremely difficult to replace the sleepers in the bucket of a power excavator, as the ties connecting the rails and the sleepers are usually removed before replacing the sleepers.

For this reason, a sleeper exchange bucket device shown in FIG. 7 has been proposed.

In other words, the sleeper holder 4 is swingably supported on the pivot point 3 of the arm 1 and the bucket 2, the cylinder 5 is connected between the sleeper holder 4 and the arm 1, and the cylinder 5 moves the sleeper holder 4 up and down. By swinging, the bucket 2 and sleeper holder 4 can grip the sleeper.

With such a sleeper exchange bucket device, the gravel B between the adjacent sleepers A and A is excavated while the sleeper holder 4 is swung toward the arm 1 side as shown in FIG. ), grab the sleeper A with the bucket 2 and the sleeper holder 4, shake the sleeper A back and forth as shown in Fig. 8(c), hold it diagonally, lift it from between the rails C, and dig it out, as shown in Fig. 8(d).
Excavate the gravel at the bottom with bucket 2 as shown in Figure 8(e).
The sleeper A can be replaced by inserting a new sleeper A between the rails C in the same manner as described above and backfilling with gravel B using the bucket 2 as shown in FIG. 8(f).

[Problem to be solved by the invention]

In such a device, the sleeper holder 4 is attached to the arm 1 and the bucket 2 swings relative to the arm 1, so the bucket 2 and the sleeper holder 4 change depending on the attitude of the arm 1 and the swing angle of the bucket 2. The way the arm hits the sleeper is different, and the posture of the arm 1 and the bucket 2. The swing angle of the sleeper holder 4 and the bucket 2 must be adjusted so that the sleeper can be easily grasped, which not only makes the operation troublesome, but also makes it difficult to swing the arm 1 while holding the sleeper, or to move the bucket 2. If it swings, the sleeper you are holding may fall.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a sleeper exchange bucket device that can solve the above-mentioned problems.

[Means and effects for solving the problem] Sleeper supports are supported on both sides of the upper part of the bucket so as to be able to swing up and down, and the piston rod of the cylinder provided near the upper part of the back of the bucket is connected to the sleeper supports. The sleeper supports are swung against each other so that the state of contact between the two is always constant.

〔Example〕

As shown in Fig. 4, an iron wheel 1 is attached to the vehicle body IO of a tracked vehicle.
A boom 13 is attached to a boom cylinder 1 on a vehicle body 10 of a track vehicle, which is provided with a support leg 12 having a support leg 1 swingable up and down.
An arm 15 is provided on the boom 13 so as to be vertically swingable, and a bucket 17 is connected to the arm 15 so as to be vertically swingable, and a bucket cylinder 18 is linked to the arm 15. It is connected to the bucket 17 via 19 to constitute a bucket device.

The bucket 17, as shown in FIG. At the same time, support brackets 23 are integrally provided on both sides of the upper part of the back plate 20, and each support bracket 2
3, a long U-shaped mounting bracket 24 is supported by a pin 25 so as to be vertically swingable, and each of the mounting brackets 24
The bases of the gripping arms 26 are fixed to the respective sleeper supports 27, and each of the gripping arms 26 has a front end surface 26a shaped like a plate and curved in a substantially U-shape.
As shown in the figure, the inner surface 21 of the side plate 21 of the bucket 17
It is located inside by a.

As shown in FIGS. 1 and 2, mounting plates 28 are fixed to the upper sides of the back plate 20, projecting laterally from the side plates 21, and each mounting plate 28 has a pair of mounting seats 29, 29. A pair of support brackets 34 and 34 supporting a pair of support shafts 33 and 33 of the trunnion 32 provided at the longitudinal center of the cylinder tube 31 of the cylinder 30 are bolted to the pair of mounting seats 29 and 29, respectively. 35, the cylinder tube 31 of the cylinder 30 is supported so as to be able to swing up and down, and the piston rod 3
6 is connected to the mounting bracket 24 with a pin 37.

By expanding and contracting the piston rod 36 of the cylinder 30, the sleeper support 27 swings up and down with respect to the bucket 17 about the pin 25, so that the sleeper support 27 and the side plates 21 of the bucket 17 can be grasped, and its sleeper support 27 and bucket 17
Since the state of contact with both side plates 21 is always constant regardless of the swing angle of the bucket 17 or the posture of the arm 15, it is possible to not only always grasp the sleeper reliably and easily, but also to ensure that the arm 15 and the bucket 17 are in contact with each other. The sleeper you are holding will not fall even if it sways.

Further, since the longitudinally intermediate portion of the cylinder tube 31 of the cylinder 30 is supported on the upper part of the back plate 20 of the bucket 17 so as to be able to swing vertically, the cylinder mounting portion can be attached to the bucket 17 without shortening the extension/contraction stroke of the piston rod 36. This prevents the cylinder attachment portion from protruding to the bottom of the bucket 17, so it does not get in the way during excavation.

At this time, the packing arm 26 of the sleeper support 27 comes into contact with the stopper 38, and the swinging position is regulated.

Further, during excavation work using the bucket 17, the gripping arms 26 of the sleeper supports 27 enter the both sides 21a of the side plates 21 of the bucket 17, so the bucket 17 becomes compact.

Further, since the front end surface 26a of the gripping arm 28 of the sleeper support 27 is curved in a substantially U-shape, gravel at the bottom of the rail can be excavated.

That is, the boom 13 is supported by the vehicle body 10 so that it can swing left and right, and when excavating gravel B at the bottom of the rail C, the boom 13 is swung as shown in FIG. Since we are excavating, bucket 1
If the front end surface of the side plate 21 of No. 7, that is, the front end surface 26g of the gripping arm 26 is straight, it will interfere with the rail C.
If it is curved in a U-shape as described above, the gravel at the bottom of the rail C can be excavated without interfering with the rail C.

This also applies to a normal bucket without a gripping arm, in which case the front end surface of the side plate of the bucket may be curved into a U-shape.

〔Effect of the invention〕

(1) Since the sleeper support 27 swings relative to the bucket 17, the contact state between the sleeper support 27 and the bucket 17, that is, the state in which the sleeper is gripped, is always constant regardless of the posture of the arm 15 and the swing angle of the bucket 17. Therefore, arm 1
The arm 15 can be grasped reliably regardless of the posture of 5 or the swing angle of the bucket 17, and the operation of grasping the sleeper is not only facilitated, but also the arm 15 can be swung while gripping the sleeper. Even if the bucket 17 is swung, the railroad ties it is gripping will not fall.

(2) The mounting portion of the cylinder 30 does not protrude toward the bottom of the bucket and does not get in the way during excavation.

[Brief explanation of drawings]

1 to 6 show embodiments of the present invention, FIG. 1 is a front view of the bucket device, FIG. 2 is a plan view, FIG. 3 is a right side view, FIG. 4 is an overall front view, and FIG. Figures 5 and 6 are explanatory diagrams of the excavation operation at the bottom of the rail, Figure 7 is a front view of the conventional example, and Figure 8 (a
) to (f) are explanatory diagrams of the sleeper replacement operation.

Claims (2)

[Claims] (1) Bucket 1 connected to arm 15 so as to be able to swing vertically
The bases of sleeper supports 27 are supported on both sides of the upper part of the bucket 17 so as to be able to swing up and down, and the cylinder tube 31 of the cylinder 30 is attached to the upper part of the back of the bucket 17 so as to be able to swing up and down. A sleeper exchange bucket device, characterized in that it is connected to the sleeper support 27. (2) The sleeper exchange bucket device according to claim 1, wherein the longitudinally intermediate portion of the cylinder tube 31 of the cylinder 30 is attached to the upper part of the back of the bucket by a trunnion type.