JP3610324B2 - Attachment for handling iron plate - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an attachment used for safely and quickly transporting, laying down or removing a laid iron plate and materials by attaching to and detaching from a construction machine (construction machine) such as a hydraulic excavator at a construction site.
[0002]
[Prior art]
At construction sites and civil engineering sites, iron plates are used to secure temporary roads for construction vehicles, to improve work safety, and to minimize the obstruction of general users other than those involved in the construction. Laid down. This iron plate is then moved or removed after the construction.
[0003]
The iron plate widely used for this purpose is 1.5 mx 6 mx 22 mm in size and weighs about 1.6 tons, so it is usually used with a construction machine such as a hydraulic excavator or a mobile crane. Transporting, laying down, and removal are performed. For example, when a hydraulic excavator is used, an iron plate is held in a bucket and these operations are performed, or an iron plate is lifted using a sling wire.
[0004]
In the case of a mobile crane, an iron plate is lifted by a special hook that is provided, transported, spread, and removed. In any case, the work is carried out with great care by workers and supervisors.
[0005]
This problem is not limited to floorboards such as iron plates, but also applies to materials used for construction and construction.
[0006]
[Problems to be solved by the invention]
Work using a mobile crane has the problem that it takes too much time and money due to many work processes. Moreover, it must be said that safety is also low. On the other hand, although work using a hydraulic excavator is easy, there is a risk of violating Article 164 of the Industrial Safety and Health Regulations from the viewpoint of safety.
[0007]
The present invention has been made in view of the above points, and provides an attachment for attaching and detaching to a conventional construction machine so that it is possible to safely and quickly carry, spread, rearrange, and remove iron sheets and materials. For the purpose.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the present invention comprises a frame and a pair of left and right horizontal claws attached to the front surface of the frame, and the pair of horizontal claws are long enough to carry an iron plate to be transported. The frame has a holding mechanism for holding the iron plate carried on the horizontal claw at a position intermediate between the pair of horizontal claws, and a detaching mechanism for the arm of the construction machine at the upper part of the frame. An iron plate handling attachment for construction equipment is provided .
[0009]
Furthermore, the present invention provides hooks (22a, 23a) extending from the frame so as to face the horizontal claws at the attachment portions between the frame and the pair of left and right horizontal claws, and the U-shaped groove portions at the respective attachment portions. An attachment for handling a steel plate for construction equipment having a structure having a structure was constructed .
[0010]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described below with reference to the drawings.
[0011]
FIG. 1 is a perspective view showing an iron plate handling attachment as an embodiment of the attachment according to the present invention.
[0012]
The attachment 1 has L-shaped claws 20 and 21 mounted horizontally on the front surface of an iron frame 10, and the frame 10 has two upright plates 11b and 11c at the center of the bottom plate 11a. It is welded in a direction parallel to a direction (vertical direction), and is fixed by a plate 11d at the opposite side center of the two upright plates 11b and 11c. Support plates 11e and 11f are welded so as to extend from the outer side surfaces of the upright plates 11b and 11c in a direction perpendicular to the direction of movement of the attachment (referred to as a lateral direction).
[0013]
Two shafts 12 and 13 are provided on the upper portions of the two upright plates 11b and 11c so that they can be inserted and removed in a horizontal state. A head 12a is provided at one end of the shaft 12, and a handle 12b is further provided. The same applies to the shaft 13. A fulcrum 14a of an L-shaped presser arm 14 is provided between the two upright plates 11b and 11c on the front side on the bottom plate 11a, and a piston arm of the hydraulic cylinder 15 is provided at the approximate center of the presser arm 14. One end of 15a is pivotally attached. The other end of the hydraulic cylinder 15 is supported by an arm (not shown) on the rear side of the bottom plate 11a.
[0014]
Next, since the claws 20 and 21 have the same structure, the claws 20 will be described. The claws 20 are made of a material having a high mechanical strength such as a forged product because the claws 20 are subjected to a force by directly touching an object to be processed such as an iron plate. The rear part rises vertically, the upper end of the vertical part 20a is enlarged rearward, and an engagement groove 20b is formed on the lower surface of the enlarged part. The groove width of the engagement groove 20b is slightly wider than the thickness of the support plate 11f. The claw 20 is firmly fixed to the frame 10 by engaging the engaging groove 20b with the upper edge of the support plate 11f and screwing the holder 22 to the support plate 11f and the bottom plate 11a so as to be pressed by the holder 22 from the front. The The claw 21 is also fixed to the frame 10 in the same manner. On the front surfaces of the holders 22 and 23, iron plate holding ridges 22a and 23a are formed.
[0015]
Next, how to attach the attachment 1 to the tip of the arm of the hydraulic excavator will be described with reference to FIGS. 2 (a) and 2 (b).
[0016]
As shown in FIG. 2 (a), the bucket 4 is normally attached to the tip of the arm 2 of the hydraulic excavator by two shafts 31 and 32, so that the bucket 4 is first brought to the ground by an operation from the operation console. The shafts 31 and 32 are extracted from the arm 2 in the lowered state, and the bucket 4 is removed.
[0017]
On the other hand, the attachment 1 to be newly attached grips the handle 12b, pulls out the shafts 12 and 13, and operates the hydraulic excavator to position so that the tip of the arm 2 enters between the upright plates 11b and 11c of the attachment 1. The holes of the shafts 31 and 32 are aligned with the holes of 12 and 13, respectively. When both holes are aligned, the shafts 12 and 13 of the attachment 1 are passed through the shaft hole of the arm of the hydraulic excavator from the outside of the upright plate 11c, and the retaining pin is attached to the opposite end of the shaft from the other upright plate 11b. Insert. In this way, the attachment 1 is attached to the tip of the arm of the hydraulic excavator as shown in FIG.
[0018]
Thereafter, the iron plate can be transported, spread, and removed by operating the arm from the operating table of the excavator.
[0019]
FIG. 3 shows how the iron plate is handled during work.
[0020]
In any of the operations, the claws 20 and 21 are freely manipulated by manipulating the movement of the arm by operating from the operation table of the excavator, and the iron plate 40 is put on the claws 20 and 21 to the back. When a predetermined operation is performed after confirming that the iron plate 40 has entered the back of the claws 20 and 21, as shown in FIG. 4, the hydraulic cylinder 15 of the attachment 1 operates and the presser arm 14 rotates around the fulcrum 14a. The tip of the presser arm 14 hits the upper surface of the iron plate 40 and presses the iron plate 40 as shown in FIG.
[0021]
On the other hand, the rear end portion (on the attachment side) of the iron plate 40 is inserted between the claws 20 and 21 and the flange 22a provided on the holder 22, so that the vertical movement is suppressed. Therefore, the iron plate 40 hardly shifts to the front and rear, from side to side and moves up and down during transportation, and is extremely safe for workers and people on the site.
[0022]
Attachment 1 can be moved back and forth, left and right, and up and down by operating from the operating table in the same way as a bucket of a hydraulic excavator. Therefore, when carrying, laying and removing iron plates, Compared to work using a suspension ring or suspension chain by a mobile crane, it is possible to safely perform work that is much finer. It is possible to transport and rearrange building materials, civil engineering materials, and other materials as well as floor plates such as iron plates.
[0023]
In the above embodiment, the claw is detachable from the frame, but may be fixed to the frame. Moreover, although the example which removes the bucket of a hydraulic shovel and attaches an attachment was demonstrated, it is also possible to attach a socket or an adapter to a bucket and to attach an attachment without removing a bucket.
[0024]
Moreover, the attachment of the present invention is not attachable only to a specific construction machine, but can be designed to be attached to a construction machine (for example, a hydraulic excavator) of all manufacturers. Unlike the description in the embodiment, the attachment of the present invention can be used as a general-purpose unloading device, not just for the iron plate, by being reversed and attached to the construction machine.
[0025]
【The invention's effect】
By attaching and detaching the attachment with claws to the arm of the construction machine, it is safer and quicker with finer movement than the conventional transportation, laying down, and removal work of the iron plate that used the construction machine in time. Work becomes possible. Further, by using the attachment according to the present invention, it is possible to clear the problem of violating Article 164 of the occupational safety and health rule prohibiting the use of the construction machine outside the intended use. The attachment according to the present invention can be used not only for handling a floor plate such as an iron plate, but also for similar operations such as transportation, rearrangement, movement, and removal of construction materials, civil engineering materials or materials.
[Brief description of the drawings]
FIG. 1 is a perspective view of an iron plate handling attachment according to the present invention.
2A is a view for explaining how to attach a conventional hydraulic excavator to the hydraulic excavator, and FIG. 2B is a diagram illustrating an attachment for attaching an iron plate handling attachment shown in FIG. 1;
FIG. 3 shows a state of handling an iron plate in an operation using an attachment according to the present invention.
FIG. 4 is a schematic diagram showing a mechanism for pressing an iron plate.
[Explanation of symbols]
1 Attachment 10 Frame 11a Bottom plate 11b, 11c Upright plate 11e, 11f Support plate 12, 13 Shaft 14 Pressing arm 15 Hydraulic cylinder 20, 21 Claw 22, 23 Holder 31, 32 Shaft 40 Iron plate

Claims (4)

It consists of a frame and a pair of left and right horizontal claws attached to the front surface of the frame, and the pair of horizontal claws has a length sufficient for placing an iron plate to be transported. comprising a pressing mechanism for pressing a steel plate to convey placed on the intermediate position of the horizontal claw of the pair, Rutotomoni includes a detaching mechanism of the arm of construction machinery in an upper portion of the frame,
A structure in which hooks (22a, 23a) extending from the frame are provided so as to face the horizontal claws at the attachment portions of the frame and the pair of left and right horizontal claws, and each of the attachment portions has a U-shaped groove portion. An attachment for handling iron plates for construction machinery. The attachment according to claim 1, wherein the pair of horizontal claws are detachable from the frame. The attachment according to claim 1 or 2, wherein the attachment / detachment mechanism with the construction machine is a shaft. The attachment according to any one of claims 1 to 3, wherein the presser mechanism for pressing the iron plate is a presser arm driven by a hydraulic cylinder.

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