FI67113B - LUTNINGSANORDNING FOER SKOPA I ARBETSMASKIN MED SNABBLAOSNING - Google Patents

Description

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Quick-action implement bucket tilt

The invention relates to a quick-attach bucket tilt for a working machine, for example an excavator, having a first fastening part 5 for a bucket lifting boom and a swivel arm, a second fastening part for a bucket, and bucket tilting members, the fastening parts being mounted rotatably about a tilting axis between them.

It is already known to fasten a bucket to an implement 10 with a quick-fix fixed fixture. The advantage of such a fastening piece is its ease of use and suitability for the fastening members of the various bucket models in use. Making various ramps, embankments, ditches, etc., results in varying terrain shapes and different es-15s, such as bridge slopes, which require numerous buckets of different gradients and result in increased inefficient working time and thus increased costs due to numerous bucket changes.

In the construction industry, for example, a picking tool attached to an excavator-20 machine is used for picking work. When a fixed tool holder is used, lateral transfer is cumbersome and time consuming, often resulting in delays in contract work.

Bucket-specific kau-25 he tilters are known for adjusting the inclination. However, such tilters have the disadvantage of not being able to move the tilt mechanism from one bucket to another, and in addition, the hydraulic hoses must be disconnected and reconnected with each bucket transfer, removal and installation.

U.S. Pat. No. 3,934,738 discloses a tilting bucket mounting member in which a tilting cylinder and shaft and a bucket locking member are arranged between the boom and the bucket mounting portions. Disadvantages of this known solution are the large distance between the boom and the bucket attachment parts, which results in a small bucket tip release force, and the small distance between the tilt shaft and cylinder support points, resulting in a large bucket fitting force and 2,671 1 3 large cylinder. Since in the solution according to the US publication the tilting cylinder is arranged between the fastening parts and supported by its casing, the material wrapped between the fastening parts prevents the free end of the tilting cylinder from moving and restricts the operation of the tilter, and the packed material can even cause the cylinder fastening to break or the cylinder . In addition, a significant disadvantage of this known solution is that the tilter requires either the use of buckets made for this particular device or the adaptation of the buckets in use to fit the attachment members and the locking device of the tilter. Another weakness in terms of maintenance is that the tilter has to be disassembled, for example to service, repair or replace its most essential part, the tilt cylinder.

The object of the present invention is to eliminate all the above-mentioned disadvantages and to provide a suitable tilt for the bucket models in use, without modification work. These objects are achieved according to the invention in that the tilting members comprise at least one tilt cylinder arranged outside the fastening parts and fastened at one end to the first fastening part and at the other end to the second fastening part.

The advantages of the solution according to the invention are a small distance between the fastening parts, which according to the preferred embodiment 25 of the invention substantially corresponds to the diameter of the tilting shaft, and which results in a larger bucket release force compared to the known solution. Due to the large distance between the support points of the tilt shaft and the cylinder, the force required to tilt the bucket is considerably smaller compared to the previous solution, and a smaller tilt cylinder can be used. In the solution according to the present invention, the material packed between the fastening parts does not restrict the operation of the tilting cylinder and since the tilting cylinder is arranged outside the fastening parts, it is immediately available for maintenance without time-consuming disassembly work.

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The invention also achieves the considerable additional advantage that the tilt according to the invention can be made from fixed quick-release fasteners already in use by separating the boom and pivot-side mounting part from the bucket-side mounting part and installing a tilting shaft between these parts and placing a tilting hydraulic shaft on the outer across.

In the following, the invention will be described in detail with reference to the accompanying drawing.

Figure 1 shows a side view of a tilt according to the invention.

Figure 2 shows a similar tilt when viewed from the front.

Figures 1 and 2 show a bucket tilt in which the lifting boom is attached to the bucket lifting boom and pivot arm mounting portion 1 in holes 4a in its lugs 3 and pivot arm to hole 4b or 4c respectively depending on the desired bucket pivot angle, and in which the bucket is secured to the jaws 6 and holes 7 in the lugs 5 of the fastening part 2.

The fastening parts 1 and 2 of the lifting boom and the swing arm and the bucket are mounted so as to be tilted relative to each other about the tilting axis 10, the fastening part 1 being provided with lugs 8 perpendicular to the fastening part 2 and the fastening part 2 provided with lugs 9 perpendicular to the fastening part the lugs 9 are provided with holes S arranged concentrically with respect to each other, and the tilt shaft 10 30 is mounted to pass through these holes.

The tilt shaft 10 comprises a shaft pin 11 and a bearing sleeve 12 fixedly mounted on the lugs 9 and surrounding the tilt shaft 10 in the area between the lugs 8. Thanks to this structure, the tilting shaft 10 toi-35 mii at the same time as a support structure for the bucket mounting part 2. The lifting side 4 671 1 3 min and the pivot arm mounting part 1 are mounted on the tilt shaft 10 by means of a bearing sleeve 14 fitted to the lugs 8. The axial movement of the tilting shaft 10 with respect to the fastening parts 1 and 2 is shown by the dowel pin 13. The above-mentioned structure provides a solid quick-release tilting and in particular a tilting bucket with a high release force due to the small distance between the fastening parts 1 and 2.

Preferably, a double-acting hydraulic cylinder 15 is used to tilt the bucket, the rafter arm 16 of which is attached to the bucket mounting portion 2 and the shell to the lifting boom and pivot arm mounting portion 1 outside said mounting portions 1 and 2 transverse to the tilt axis 10.

Depending on the size of the bucket, two or more tilt cylinders placed on opposite sides of the fastening parts can also be used to avoid their unnecessarily large size.

Characteristically for the invention, the tilt cylinder 15 is fixed at its ends by eye bearings 18 and 19. The eye-20 bearing 18 is placed at one end (i.e. upper end) of the support frame 20, which support frame 20 is rigidly mounted at one end (i.e. lower end) in the mounting part 1. The eye bearing 19 is placed in the lugs 9 of the fastening part 2. The support frame 20, which also acts as a protective frame for the tilt cylinder 15 25 so that no part of the tilt cylinder 15 is outside the support frame 20 during machine operation, is formed of two elongate plates 21 and 22 widening 22 at the end 18 of the eye bearing from the connecting plate or rod 23. Concentric holes 24 for the mounting shaft 25 of the tilt cylinder 15 are made in the support frame 20 at the end 18 of the eye bearing. The mounting shaft 25 is rotatably mounted in the holes 24. An eye bearing 18 is fitted to the sleeve 26 around the mounting shaft 25 of the tilt cylinder 15 extending between the side plates 21 and 22, to which a tilt cylinder 15 is attached. concentric holes 27 for the mounting shaft 29 of the piston rod 16 of the tilt cylinder 15. The mounting shaft 29 is rotatably mounted in the holes 27. An eye bearing 19 is fitted to the sleeve 28 around the mounting shaft 29 of the piston rod 16, which extends to the part of the shaft 29 between the lugs 9, by means of which the tilt cylinder 15 is fixed at its piston rod end 16.

In particular, it should be emphasized that although the device 10 has been described above as an excavator bucket tilt according to its preferred embodiment, it is in no way intended to limit the invention to this particular example, but as obviously various modifications are possible within the inventive idea defined by the following claims.

Claims (5)

6 671 1 3 A bucket tilt of a quick-action implement, for example an excavator, having a first attachment part 5 (1) for a bucket lifting boom and a swing arm, a second attachment part (2) for a bucket, and bucket tilting members, the fastening parts il, 2) being mounted so as to rotate about an inclined axis (10), characterized in that the tilting members comprise at least one tilting cylinder (15) located outside the fastening parts (1, 2) and fastened at its first end to the first fastening part (1) and at its second end to the second fastening part (2) ). Tilt according to Claim 1, characterized in that the distance between the lifting boom and the pivot arm fastening part (1) and the bucket fastening part (2) corresponds substantially to the diameter of the tilting shaft (10) between them. Tilt according to Claim 2, characterized in that the tilt axis is arranged on the lugs (8, 9) between the fastening parts (1, 2) and perpendicular to these fastening parts (1, 2) and that the lugs (8, 9) 8), the tilting shaft (10) consists of a shaft pin (11) and a bearing sleeve (12) fixedly mounted on the lugs (9) of the bucket mounting part (2). Tilt according to Claim 1, characterized in that the tilt cylinder (15) is fastened at its first end to a support frame (20) on the side of the first fastening part (1), which protects the tilt cylinder 30 (15) in the digging direction so that the tilt cylinder is always inside the support frame. . Tilt according to Claim 1, characterized in that the tilt cylinder (15) is mounted on eye bearings (18, 19).