JP3373787B2 - Hook mechanism of hydraulic excavator combined with crane - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hook mechanism for a hydraulic excavator that also serves as a crane. 2. Description of the Related Art Conventionally, in a hydraulic excavator that also serves as a crane, a hook is connected directly or via a sulcan to a pivot point on a back surface of a bucket and a bucket link as shown in FIG. [0003] The method of attaching the hook to a bucket link pivot point (first fulcrum) provided on the back surface of the bucket directly or via a sulcan is easy to attach, and when the hook is retracted. Although it is excellent in that it can be stored between the bucket links, the distance between the hook and the back of the bucket during the lifting operation is small, so that when the boom and arm are raised, the hook tip and the wire rope are There is a problem in that the hook contacts the back surface and damages the hook, the wire rope, and the bucket. In particular, when turning while a load is hung, the wire rope is rubbed between the wire rope and the back surface of the bucket, and the wire rope is severely damaged. SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to secure a sufficient distance between a hook and a bucket during a suspending operation to prevent interference between a hook or a wire rope and a bucket. An object of the present invention is to provide a hook mechanism of a crane / hydraulic shovel that can be easily stored on the back of a bucket when the hook is stored, and in particular, to provide a single-joint hook mechanism that does not make the structure of the hook very complicated. In order to achieve the above object, according to the present invention, the hook link is provided on the back surface of the bucket, and is constituted by a plurality of members to rotate around the pivot point of the bucket link. rotatably to set the vignetting, while the fluoride
Click is mounted to be pivoted to the distal end of the hook link, part of the member constituting the hook links when the hook store is accommodated in between the pair of bucket links Rutotomoni, part or all of the hooks the constituting the hook link
It can be stored between another pair of members, and
The hook and the hook can be stored between the bucket links . An embodiment of the present invention will be described below with reference to FIGS. 1 to 8. FIG. 1 is a side view of a hook attachment in a crane operation according to the present invention, FIG. 2 is a plan view of a hook attachment in a crane operation in the present invention, and FIG. FIG. 4 shows a hook storage side view of the embodiment at the time of storage according to the present invention, and FIG. 5 shows a working posture view of the embodiment at the time of crane work according to the present invention. Show. FIG.
Shows a hook mounting side view of the embodiment at the time of the conventional crane operation, FIG. 7 shows a hook storage side view of the embodiment at the time of the conventional storage, and FIG. 8 shows a working posture of the embodiment at the time of the conventional crane operation. Is shown. Reference numeral 1 denotes an upper swing body of a hydraulic excavator. The upper swing body 1 is swingably mounted on a lower traveling body 2, and a boom 3 is raised and lowered by a boom cylinder 4 in front of the upper swing body 1. The boom 3 has an arm 5
Is pivotally attached by an arm cylinder 6 so as to be able to move up and down. Further, a bucket 7 is pivotally attached to the tip of the arm 5 by a bucket cylinder 8 so as to be able to move up and down. Bucket 7 of arm 5
One end of an arm link 9 is pivotally connected near the pivot point, and a bucket cylinder 8 is attached to the other end of the arm link 9.
And one end of the bucket link 10 are coaxially pivoted (second fulcrum 13). The other end of the bucket link 10 is coaxially pivotally supported together with one end of a hook link 12 at a first fulcrum 11 on the back surface of the bucket 7. A lug 10a for fixing the hook link 12 when the hook is retracted is fixed to the upper surface of the bucket link 10 near the second fulcrum 13 on the arm link 9 and the bucket cylinder 8 pivot shaft side, and the lug 10a has a pin hole 10b. The first of the bucket links 10
A lug 10d for fixing the hook link 12 during crane operation is fixed to the fulcrum 11 side boss 10c.
Is provided with a pin hole 10e. The hook link 12 is pivotally connected to the first fulcrum 11 so as to be rotatable about the first fulcrum 11, and is stored between the pair of bucket links 10 during storage.
2a and a pair of bucket links 1 during storage.
0, a second member 12b positioned above the second member 12b,
And a pair of third members 12c for accommodating the hooks 14 during storage, and a pin hole 12d for fixing to the bucket link 10 side at the time of storage is formed at the tip of the third member 12c. Further, a hook 14 is pivotally mounted in the vicinity of the distal end of the third member 12c by a pin 15 directly or via a sarkan so as to be rotatable in the front-rear direction. Also,
A boss 12e for fixing the hook 14 when the hook is stored is fixed to the first member 12a of the hook link 12, and a pin hole 12f is formed near the first fulcrum 11 of the hook link 12. Next, the operation of the present invention will be described. First, during crane operation, the bucket 7 is grounded on the ground in order to lower the boom 3 or the arm 5 so that the operator can set up. Thereafter, the bolt 17 fixing the hook 14 to the hook link 12 is loosened, the hook is rotatable, the pin 16 fixing the hook link 12 is pulled out, and the hook link 12 is rotated, so that the bucket link 10 is rotated. Hook link 1 with pin hole 10e drilled in lug 10d fixed to boss
The pin 16 is inserted into the pin hole 12f formed in the hole 2, and the hook link 12 is fixed. This allows crane work. Next, when the crane operation is completed and the excavation operation using the bucket 7 is started, the bucket 7 is grounded on the ground and a pin fixing the hook link 12 is set in order to enable the operator to set up. 16, the second member 12 b of the hook link 12 rotates the hook link 12 toward the bucket link 10 to the position of the upper surface of the bucket link 10, and moves the first member 12 a of the hook link 12 between the pair of bucket links 10. And the whole or a part of the hook 14 is placed above the second member 12b of the hook link 12, and the pair of third members 12c
Store between. Thereafter, the pin link 12 d formed in the third member 12 c of the hook link 12 and the bucket link 10
The pin 16 is inserted into a pin hole 10b drilled in a lug 10a fixed near the second fulcrum, and the hook link 12 is fixed, and the hook 14 is fixed by the hook fixing device 17, thereby completing the hook storing operation. . The present invention can be variously modified without departing from the spirit of the present invention, and it goes without saying that the present invention extends to the modified ones. According to the present invention, with the construction described in the above-described embodiment, the distance between the hook and the bucket can be sufficiently secured during the operation to prevent the hook or wire rope from interfering with the bucket. prevented while Fukkuri during hook storage
Some of the members that make up the link are stored between bucket links.
And part or all of the hook
It can be stored between other members that make up the link, and
Hook links and hooks can be stored between bucket links
And a very remarkable effect.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view of a hook mounting in a crane operation according to the present invention. FIG. 2 is a plan view of a hook mounting in a crane working embodiment according to the present invention. FIG. 4 is a side view of a hook storage unit according to an embodiment of the present invention during storage. FIG. 4 is a plan view of a hook storage unit according to an embodiment of the present invention during storage. FIG. FIG. 6 is a side view of a hook attachment in a conventional crane operation embodiment. FIG. 7 is a side view of a hook storage in a conventional storage embodiment. FIG. 8 is a work posture view of a conventional crane operation embodiment. Description 5 Arm 7 Bucket 8 Bucket cylinder 9 Arm link 10 Bucket link 11 First fulcrum 12 Hook link 12a First member 12b Second member 12c Third member 13 Second fulcrum 14 Hook

Claims (1)

(57) [Claims 1] An upper revolving structure is swingably mounted on a lower traveling structure, and a boom, an arm and a bucket are pivotally mounted on a front portion of the upper revolving structure so as to be capable of elevating. A hydraulic shovel having a pair of arm links and a pair of bucket links between an arm, a bucket and a bucket cylinder , wherein the bucket
A hook link is provided rotatably about the pivot point of the
The hook attached to the hook link can be stored.
Oite hydraulic excavator form, the hook link is provided bucket <br/> Tsu preparative back, and, rotatably set is composed of a plurality of members to <br/> the bucket link pivot point around Kere,
Meanwhile, the hook is mounted to be pivoted to the distal end of the hook link, configure the hook links when the hook store
That part of the member is accommodated between the pair of bucket links Rutotomoni, some or all of the hook to be accommodated between the other pair of members constituting the hook link, further
The hook link and the hook are stored between the bucket links
A hook mechanism for a hydraulic excavator, which is made possible .