KR20080008817A - Bucket fixing device of heavy equipment are compatible - Google Patents

Abstract

A bucket fixing device for heavy equipment having compatibility is provided to cut down on the cost required, to shorten working hours and to improve work efficiency at replacement by coupling a bush manufactured in various sizes to a lug coupling hole of a bucket selectively and fixing a bucket to an arm using a fixing pin coupled to the bush, and to improve durability of components by regulating a gap between a bucket and an arm and keeping a connection between a bucket and an arm at the fixed torque. A bucket fixing device for heavy equipment having compatibility comprises a fixing pin(13) fixing a bucket(9) to the front end of an arm(8) to be movable, bushes(14) formed in various sizes to have an inside diameter corresponded to an outside diameter of the fixing pin and an outside diameter varied by according to a lug coupling hole(18) of a bucket to be replaced to make the fixing pin have compatibility when replacing a bucket and installed to the lug coupling hole of the bucket selectively to support the outside of the fixing pin, a cover(16) fixed to the outside of a lug(9a) by a bolt(15) fastened to the bush via the lug of the bucket, and a shim(17) fixed between the lug of the bucket and the cover and regulating a gap between the bucket and the arm when the side of the bucket or the arm is worn away by friction.

Description

Bucket fixing device of heavy equipment are compatible}

1 is a schematic view of a typical excavator,

Figure 2 is a schematic cross-sectional view of a bucket fixing device for heavy equipment having compatibility according to an embodiment of the present invention,

Figure 3 (a, b, c) is a modified example of the bush used in the bucket fixing device for heavy equipment having compatibility according to an embodiment of the present invention,

Figure 4 is a perspective view of a shim used in the bucket fixing device for heavy equipment having compatibility according to an embodiment of the present invention.

* Explanation of symbols used in the main part of the drawing

8; Arm

9; bucket

9a; Lug

13; Push pin

14; Bush

15; volt

16; cover

17; Shim

18; Lug fitter

When the bucket is replaced with a bucket of a different model or capacity according to the working conditions, the present invention selectively replaces only a bushing coupled to the lug coupling hole of the bucket, and the heavy equipment having compatibility capable of fixing the bucket to the arm. A bucket fixture.

By combining the lug coupling hole of the bucket to be replaced and the bushing made by the predetermined size to fit the fixing pin selectively to the lug coupling hole, the buckets having the compatibility that can easily be replaced by the bucket of different models or capacities can be used. A cost bucket fixture.

As shown in Figure 1, a typical excavator, as shown in Figure 1, the general excavator is a lower running body (1),

An upper revolving body 2 mounted on the lower traveling body 1 and rotating in both the left and right directions by driving a driving means (referred to as a swing motor);

A cab 3 mounted to the upper swing structure 2 and a bonnet 12 mounted to be opened and closed to the engine compartment;

A boom 7 and an arm (mounted to the upper swing structure 2 outside the cab 1) and operated by driving of the corresponding actuators (referring to the boom cylinder 4, the arm cylinder 5 and the bucket cylinder 6). 8) a working device 10 including a bucket 9 and the like,

The counterweight 11 is mounted to the rear of the upper swing body 2 and includes a weight body (not shown) such as mercury so as to maintain the balance of the equipment during operation.

On the other hand, the bucket 10 mounted on the tip of the arm 8 described above has a structure that differs in size and capacity for each model of the company that designs and manufactures it. For this reason, in order to mount a bucket of a different model or capacity or a bucket of another company according to the working conditions to the arm, an additional attachment such as a quick coupler is used, which leads to a problem in that the cost is increased. .

Due to the load or impact generated on the work device 10 described above, frictional wear occurs on the side of the bucket 9 or the arm 8, and the gap between them (the side of the arm 8 and the bucket 9) Lugs (not shown) are generated. The gap described above causes the bucket 10 to move or shake in the lateral direction with respect to the arm 8 during operation. As a result, wear of the corresponding parts connecting the bucket 10 and the tip of the arm 8 is promoted, and the service life thereof is shortened.

According to one embodiment of the present invention, when a bucket is replaced with a bucket having a different model or capacity according to a working condition, a bush made by a predetermined size is selected in advance to fit the coupling hole of the bucket lug to be replaced and coupled to the coupling hole. After that, it is related to a bucket fixing device for heavy machinery that is compatible to fix the bucket to the arm by a fixing pin coupled to the bush.

An embodiment of the present invention has a compatibility that can simplify the structure of the fixing device used when replacing the buckets of different models or capacities to reduce the cost cost, shorten the replacement work time to improve the work efficiency Related to bucket fixtures for heavy machinery.

One embodiment of the present invention, by adjusting the clearance between the bucket and the side of the arm associated with the bucket fixing device for heavy equipment having a compatibility that can improve the durability of the parts because the connection portion of the bucket and the arm tip maintains a constant torque at all times do.

Heavy-duty bucket fixing device having a compatibility according to an embodiment of the present invention, in the heavy-duty bucket fixing device,

A fixing pin for pivotally fixing the bucket to the arm tip,

When the bucket is replaced, it is formed by a predetermined size to have an inner diameter corresponding to the outer diameter of the fixing pin and a variable outer diameter corresponding to the lug coupling hole of the bucket to be replaced so that the fixing pin is compatible, and is optional for the lug coupling hole of the bucket to be replaced. Bushing to support the outer side of the fixing pin,

A cover fixed to the outer surface of the lug by a bolt which is fastened to the bush through the lug of the bucket,

It is mounted between the lug and the cover of the bucket and includes a shim for adjusting the gap between the bucket and the arm in the event of wear on the bucket or arm side.

The shim described above is divided into semicircular shapes so that the shim can be replaced without removing the bolt from the bush.

It is formed on the inner surface of the above-described shim, and fastening the bolt to the bush includes a fixing groove that is inserted into the bolt when fixing the shim to prevent the core from flowing down from the bolt.

The outer diameter size of the above-described bushing corresponds to the inner diameter of the lug coupling hole, and is formed while maintaining 5 mm units.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, which are intended to describe in detail enough to enable those skilled in the art to easily practice the invention, and therefore It is not intended that the technical spirit and scope of the present invention be limited.

As shown in Figure 2 to 4, the heavy-duty bucket fixing device according to an embodiment of the present invention, the heavy-duty bucket fixing device for rotatably fixing the bucket (9) to the tip of the arm (8) To

A fixing pin 13 rotatably fixing the bucket 9 to the end of the arm 8,

When the bucket 9 is replaced, the fixing pin 13 is variable in correspondence with the inner diameter d1 corresponding to the outer diameter of the fixing pin 13 and the lug coupling hole 18 of the bucket 9 to be replaced. Formed in advance by a predetermined size to have an outer diameter (for example, any one of D1, D2, and D3), it is selectively mounted on the lug coupling hole 18 of the bucket 9 to be replaced, and thus the outer side of the fixing pin 13 Bushes 14 and 14a, 14b and 14c for supporting the

A cover 16 fixed to the outer surface of the lug 9a by a bolt 15 which penetrates the lug 9a of the bucket 9 and is fastened to the bush 14,

It is mounted between the lug 9a of the bucket 9 and the cover 16, and the bucket 9 or the arm 8 side adjusts the gap between the bucket 9 and the arm 8 in the event of abrasion due to friction. And a shim 17.

As shown in FIG. 3 (a, b, c), the size of the outer diameters D1, D2, D3 of the above-described bushes 14; 14a, 14b, 14c corresponds to the inner diameter of the lug coupling hole 18. It is processed while maintaining the unit of mm. For example, assuming that the outer diameter D1 of the bush 14a is 30 mm, the outer diameter D2 of the bush 14b is pre-machined to have 35 mm, and the outer diameter D3 of the bush 14c is 40 mm. Pre-processed to have. At this time, the inner diameter d1 of the bush 14 has the same size corresponding to the outer diameter of the fixing pin 13.

As shown in FIG. 4, the shim 17 is divided into semi-circular shapes so that the shim 17 can be replaced without removing the bolt 15 from the bush 14. When the bolts 15 are fastened to the bushes 14 to fix the shims 17, the fixing grooves 17a are inserted into the bolts 15 to prevent the shims 17 from flowing down from the bolts 15. 17) is formed on the inner side.

Hereinafter, with reference to the accompanying drawings an example of the use of the bucket fixing device for heavy equipment having compatibility according to an embodiment of the present invention will be described in detail.

When the bucket 9 mounted at the tip of the arm 8 is replaced with a bucket of a different model or capacity according to the working conditions, the fixing pin 13 which pivotally fixes the bucket 9 to the arm 8 is compatible. Has

2 and 3, the inner diameter d1 of the bush 14 coupled to the lug engaging hole 18 of the bucket 9 to be replaced has a size corresponding to the outer diameter of the fixing pin 13. At this time, the outer diameter (D1, D2, D3) of the bush 14 is selectively mounted to the lug engaging hole 18 of the bucket 9 to be replaced, and has a predetermined size so as to have a variable outer diameter corresponding to the lug engaging hole 18. Star is processed in advance (for example, the outer diameter of the bush 14 is processed while maintaining a 5mm interval).

As shown in FIG. 3 (a), the outer diameter D1 of the bush 14a, which is selectively mounted in the lug engaging hole 18 of the replaced bucket 9, is the lug engaging hole of the replaced bucket 9 ( It has a size corresponding to 18). At this time, the inner diameter d1 of the bush 14a has a size corresponding to the outer diameter of the fixing pin 13.

As shown in Fig. 3 (b), the outer diameter D2 of the bush 14b selectively mounted in the lug engagement hole 18 of the bucket 9 to be replaced is, for example, the bush 14a described above. It is pre-machined to have a size 5 mm larger than the outer diameter D1. At this time, the inner diameter d2 of the bush 14b has the same size as the inner diameter d1 of the bush 14a.

As shown in FIG. 3C, the outer diameter D3 of the bush 14c that is selectively mounted in the lug engagement hole 18 of the bucket 9 to be replaced is, for example, the bush 14b described above. It is processed in advance so as to have a size 5 mm larger than the outer diameter D2. At this time, the inner diameter d3 of the bush 14c has the same size as the inner diameter d1 of the bush 14a.

As described above, when replacing the bucket 9 mounted at the tip of the arm 8 with a bucket of a different model or capacity, the lug coupling hole 18 of the bucket 9 to be replaced so that the fixing pin 13 is compatible. The inner diameter d1 of the bush 14 coupled to) has the same size. At this time, the outer diameter (D1, D2, D3) of the bush 14 is previously processed for each predetermined size to selectively correspond to the lug engaging hole 18 of the bucket 9 to be replaced.

As shown in FIG. 4, if a gap occurs due to wear on the side of the bucket 9 or the arm 8, a shim mounted between the lug 9a of the bucket 9 and the cover 16. The gap can be adjusted by adjusting the thickness of (17).

At least one shim is taken out of the disc-shaped shim 17 mounted between the cover 16 and the bucket 9 in the state which loosened the bolt 15 fastened to the bush 14 slightly. When the bolt 15 is fastened to the bush 14 after the core is drawn out, the bush 14 is pressed toward the arm 8 as much as the thickness of the drawn core. This makes it possible to adjust the gap between the bucket 9 and the arm 8.

As described above, when adjusting the gap between the bucket 9 and the arm 8, the bolts 15 fastened to the bush 14 as the shims 17 are divided into arcs (shown in FIG. 4). It is possible to adjust the thickness of the shim 17 without removing it completely.

When the shim 17 is mounted between the cover 16 and the lug 9a, the shim 17 is moved to the bolt 15 because the bolt 15 is positioned inside the fixing groove 17a formed in the shim 17. It doesn't flow down. In addition, since the bush 14 is directly coupled to the bolt 15, the bush 14 is not separated from the bucket 9 even when the arm 8 is separated from the bucket 9.

As described above, the bucket fixing device for heavy equipment with compatibility according to an embodiment of the present invention has the following advantages.

When the bucket mounted on the tip of the arm is replaced with a bucket of different model or capacity, the structure of the fixing device used is simplified to reduce the cost cost and shorten the replacement time, thereby improving work efficiency.

By adjusting the gap between the bucket and the side of the arm, the connection between the bucket and the tip of the arm maintains a constant torque at all times, increasing the durability of the part.

Claims (4)

In heavy duty bucket retainers: A fixing pin rotatably fixing the bucket to the arm tip; When the bucket is replaced, the pins are formed in predetermined sizes in advance to have an inner diameter corresponding to the outer diameter of the fixing pin and a variable outer diameter corresponding to the lug coupling hole of the bucket to be replaced so as to be compatible with the lug coupling holes of the bucket to be replaced. A bush selectively mounted to support the outer surface of the fixing pin; A cover fixed to the lug outer surface by a bolt that penetrates the lug of the bucket to the bush; And And a shim mounted between the lug and the cover of the bucket, the shim adjusting the gap between the bucket and the arm when abrasion occurs on the bucket or the arm side. 2. The bucket fixing device of claim 1, wherein the shim is divided into semicircular shapes so as to replace the shim without removing the bolt from the bush. 3. The bucket of claim 2, wherein a fastening groove is formed on an inner surface of the shim and includes a fixing groove which is fastened to the bush by the bolt to fix the shim to prevent the shim from falling from the bolt. Fixture. 2. The bucket fixing device of claim 1, wherein an outer diameter of the bushing corresponds to an inner diameter of the lug coupling hole and is formed by maintaining a 5 mm unit.

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