JPH0442366Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) This invention relates to a connector used to attach equipment such as a breaker or crusher to the tip of the arm of a putter shovel.

(Prior Technology) In general, power shovels often have a breaker, crusher, etc. attached to the tip of the arm instead of a bucket, depending on the situation at the construction site, to perform work other than digging, such as crushing concrete. For this purpose, mounted equipment such as breakers and crushers are attached to the arm 1 of the power shovel and the bucket operating link 2 using pins 22 via a bracket 21 that supports the equipment, as shown in the example of the breaker 20 in Fig. 4. It is designed to be connected by pins. In addition, 23 in the figure is a swing link, 2
4 is a hydraulic cylinder for driving the bucket.

(Problem to be solved by the invention) However, in the above connection work, the breaker 20 with the bracket is placed on the ground or on a support, and the power shovel is operated to operate the suspended arm 1 and the bucket. Since this is done while adjusting the position of the link (hereinafter simply referred to as the link) 2, it is difficult to align the pin hole of the arm 25 of the bracket 21 with the pin holes of the arm 1 and the link 2. Since the pin 22 is used, the pin may warp during the insertion process, making it impossible to embed the pin, or the tip of the pin 22 may not fit easily into the pin hole of the armrest 25, making it time consuming to install the pin 22. It took a lot of effort. Also, when removing the pin 22,
The work was also time-consuming because the arm 1 and the link 2 in the suspended state and the pin 22 caused friction.

This invention solves the above-mentioned conventional problems, and aims to provide a connector for power shovel-mounted equipment that can easily attach and detach the mounted equipment to the power shovel.

(Means for Solving the Problems) In order to achieve the above object, in this invention, a pin hole provided at the tip of the arm of the power shovel or the link for operating the bucket is 1/2 the depth of the pin hole. A pin comprising a first shaft portion that fits within the following range, and a second shaft portion that fits into a pin hole provided in a arm arm that is connected to the first shaft portion and supports a device mounted on a power shovel; A connector for a power shovel-mounted device was constructed, which includes a lid that covers a pin hole provided in the arm, and a fixture that fixes the lid to the arm.

In this invention, the first shaft portion only needs to fit into the pin hole provided at the tip of the power shovel arm or bucket operating link within a range of 1/2 or less of the depth of the pin hole, but the It is preferable that the fitting length of the first shaft portion in the hole be 1/5 to 1/3 of the depth of the pin hole because attachment to and removal from the pin hole is particularly easy.

(Function) In the coupling device for power shovel-mounted equipment of this invention, the first shaft portion of the pin fits into the pin hole provided at the tip of the arm of the power shovel or the link for bucket operation, and the second shaft portion fits into the pin hole for mounting on the power shovel. The attached device is connected to the arm or bucket operating link by fitting into a pin hole provided in an arm attached to a bracket or the like that supports the device. Further, the lid is fixedly attached to the arm by a fixture to prevent the pin from falling off from the arm.

(Example) An example of this invention will be described below with reference to FIGS. 1 and 2.

In the figure, parts with the same reference numerals as those in FIG. 4 indicate the same parts as in FIG. Metals 5, 5 are fastened to the top plate portion 6a of the bracket body 6 with bolts 7 facing each other. An elongated hole 8 is bored in the leg plate part 5a of the armrest 5, and the bolt 7 inserted into the elongated hole 8 is screwed into a nut 9 fixed to the top plate part 6a.
Reference numeral 10 designates a pin for pivoting arm 1 and link 2, which is a two-part pin whose first shaft portion 11 on the tip side fits into a part of pin hole 12 of arm 1 (or link 2) from both sides. A second shaft portion 13 connected to the first shaft portion 11 is fitted into the pin hole 3 (or 4), and a lid 14 is integrally fixed to the second shaft portion 13 in the form of a brim. . Reference numeral 15 denotes a bolt that is a fixture for fixing the lid 14 to the armrest 5. The lid 14 has a through hole for the bolt 15, and the armature 5 has a screw hole into which the bolt 15 is screwed. .

To attach the breaker 20 to the power shovel using the connector 16 configured as described above, push the pin 10 from the pin hole (or 3) of the arm arm 5 on one side into the pin hole 12 of the arm 1 (or link 2), and then
5 fixes the lid 14 to the armrest 5. Since the pin 10 only needs to be pushed into the pin hole 12 of the arm 1 or link 2 from one side, it is easy to align the pin 10, and the length of the pin 10 fitted with each pin hole is short. few. Even during the removal work of the pin 10, the pin 10 can be easily removed with less bending as described above. Further, since the pin 10 is short and lightweight, it is easy to handle.

In the above embodiment, the dimension between the opposing arms 5 and 5 can be adjusted by operating the bolt 7 according to the width W of the arm 1 and the link 2, so that power shovels with various widths W can be adjusted. This has the advantage that the breaker 20 can be mounted using one type of bracket 17 compared to the previous one, but when changing the width W and the arm spacing, the conventional single pin 22 is Whereas you have to prepare different lengths,
The pin 10 of this invention has the advantage that the same product can be used without any problem. Also, depending on the power shovel, the diameter of the pin hole 12 of the arm 1 and the link 2 may change, but in this case, the first shaft portion 1
It is sufficient to prepare and use pins 10 that differ only in the diameter of the pin holes 3 and 4, and to prepare a wide variety of armrests 5 and brackets 17 (when the armrest 5 is fixed to the bracket body 6) with different diameters of the pin holes 3 and 4. do not have to.

This invention is not limited to the above embodiment; for example, the first shaft portion 11 and the second shaft portion 13 may have the same diameter. Further, in the above embodiment, the lid 14 is integrally fixed to the second shaft portion 13 of the pin 10, but as shown in FIG. 10 and a separate lid 14 may be used. In this case, the movement of the pin 10 toward the pin hole 12 involves the movement of the first shaft portion 11 and the second shaft portion 1.
The pin 10 is restricted by the step portion 3 being engaged with the end face of the link 2 or the arm 1, and the pin 10 is prevented from falling off outwardly by the lid 14. In addition, when the first shaft part 11 and the second shaft part 13 have the same diameter, if the length of the first shaft part 11 is about 1/2 of the depth of the pin hole 12, then
As shown in FIG. 3, the lid 14 and the pin 10 may be separated. In addition, in FIG. 3, if the lid 14 and the pin 10 are connected and fixed with bolts or the like,
The same effects as the embodiment shown in FIG. 1 can be obtained. This invention can also be applied to a bracket and power shovel connector in which the cross arm 5 is fixed to the bracket body 6 by welding, etc. In addition to breakers, this invention can also be applied to various power shovel-mounted devices such as crushers, cutters, and crane units. It can also be applied to a connector for attaching a power shovel bucket to a power shovel.

(Effects of the invention) As explained above, according to this invention, it is possible to easily attach and detach the equipment to the power shovel in a short time using the two-part pin.

[Brief explanation of the drawing]

Fig. 1 is a vertical sectional view of the top of the bracket showing one embodiment of this invention, Fig. 2 is a plan view of the same, Fig. 3 is a longitudinal sectional view of the armrest portion showing another embodiment of this invention, and Fig. 4 The figure is a perspective view showing an example of mounting a conventional bracket. 1...Arm, 2...Bucket operation link,
3...pin hole, 4...pin hole, 5...branch, 6...
...Bracket body, 11...First shaft portion, 12...
Pin hole, 13... Second shaft portion, 14... Lid, 15...
...Bolt (fixing tool), 16... Connector, 17...
Bracket.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A first shaft portion that fits into a pin hole provided at the tip of a power shovel arm or bucket operating link within a range of 1/2 or less of the depth of the pin hole;
a pin having a second shaft part that is connected to the first shaft part and fits into a pin hole provided in the arm arm that supports the power shovel-mounted device; and a lid that covers the pin hole provided in the arm arm. and a fixture for fixing the lid to the cross arm. 2. The power shovel attachment equipment connector according to claim 1, wherein the lid is fixed to the second shaft portion of the pin.