JPH0728306Y2 - Concrete bucket - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention accepts ready-mixed concrete (ready-mixed concrete) made by a mixer truck on the ground and lifts it with a crane to carry it to a setting site at a high place. Regarding the concrete bucket used.

[Prior Art] Conventional concrete buckets that are used to receive ready-mixed concrete made by a mixer truck on the ground into a bucket and carry it to a high place are generally boat-shaped buckets.

[Problems to be Solved by the Invention] In such a conventional boat-shaped bucket, as shown in FIG. 6, the lower end portion 51 of the bucket body 50 is formed in a rounded shape from a pointed tip in a hazy shape. Therefore, when hanging down with a crane and landing on the ground and falling sideways according to grounding, the landing position is not accurately determined due to slipping on the ground, and in addition, the ground point 51a at the bottom end of the bucket is in the middle of falling the bucket body sideways. Since the phenomenon of loose rotation around the machine is likely to occur, the mixer vehicle cannot be quickly and reliably received, and there is a problem in terms of safety, and a countermeasure for use has been required.

The present invention has been made in view of the above problems of the conventional technology, and its purpose is to make sure that the stand first comes into contact with the ground when the bucket is lifted by the crane and is lowered to the ground. The support point is located at a position deviated from the center so that it can be laid down naturally around one point, and the concrete bucket that can receive the raw concrete from the mixer truck accurately and safely is tried to be provided. It is a thing.

[Means for Solving the Problems] In order to achieve the above object, the concrete bucket according to the present invention has a grounding stand and a pivot pin as a fulcrum on a bucket body that is hung on a crane and carries fresh concrete. And a bucket holder that is freely undulated, and the position of the pivot pin that serves as a connecting portion between the stand and the bucket holder is lower than the center of gravity of the bucket body and laterally displaced from the axis thereof. The concrete bucket, which is set to the position, is provided with a hopper having an opening on its side so that the bucket body faces upward when the bucket body is laid down.

[Operation] FIGS. 4 to 5 show a state in which the bucket is hung on a crane and is laid down on the ground.

In FIG. 5, when the hanging hand 6 of the bucket main body 1 is hung on the hook 10 of the crane and the bucket main body 1 is vertically suspended and lowered to the ground from a high place, the first stand 2 reaches the ground 11 when the ground is reached. Ground. When the bucket main body 1 continues to descend, the bucket main body 1 is moved to the stand 2 and the bucket holder 4 depending on the center of gravity of the bucket and the eccentric position of the pivot pin 3.
The joint portion of (3) bends around the pivot pin 3 as a fulcrum, and the bucket body 1 tilts together with the holder 4 as shown by the chain line in FIG. Then, as shown in FIG. 5, since the support piece 4a on one side of the holder 4 is parallel to the ground 11 and comes into contact with the ground 11, the bucket body 1 is horizontally laid horizontally and completely laid down. In this state, since the opening 5a on the side of the hopper 5 faces upward, fresh concrete is poured from the chute 13 of the mixer truck 12 through the hopper opening 5a that faces upward.

When the required amount of ready-mixed concrete is received, the supply from the mixer truck is stopped, and the bucket body 1 is lifted again by the crane. When the laid-down bucket body 1 is lifted up, first, the bucket body 1 and the bucket holder 4 gradually become vertically upward with the pivot pin 3 as a fulcrum, and then the stand 2 moves away from the ground 11. Therefore, also at this time, the bucket body 1 can be safely lifted without wobbling to the left or right when the bucket body 1 is lifted.

When the bucket body 1 is lifted to a concrete pouring site at a high place, the electric cylinder 15 is operated from the ground to open the pinch valve 16, and the hose 17 is opened from the bottom of the bucket body 1.
After that, the raw concrete inside is drained.

[Embodiment] The bucket body 1 is provided with a pinch valve 16 which is openably and closably operated at the bottom portion. The pinch valve 16 is a continuous rod when the electric cylinder 15 pushes or pulls one arm 14. The other arm 14 'is also interlocked in the same direction via 18 and simultaneously opened and closed in the left and right directions.

The stand 2 has a triangular frame when viewed from the side, and the bucket holder 4 is connected to the top of the triangle by a pivot pin 3. The position of the pivot pin 3 is deviated rearward from the axial center as viewed from the side, and the bucket main body 1
The center of gravity relative to is set higher than the pivot pin 3 so that the bucket body in the vertical state is naturally tilted rearward when it becomes free.

[Effects of the Invention] The present invention is a bucket holder in which a grounding stand 2 and a pivot pin 3 are pivotally connected to a grounding stand 2 and an upper part of the bucket body 1 which is hung on a crane to carry fresh concrete as described above. 4 is provided, and the position of the pivot pin 3, which serves as a connecting portion between the stand 2 and the bucket holder 4, is set to a position lower than the center of gravity of the bucket body 1 and laterally displaced from the axis thereof. In addition, since the hopper 5 having the opening 5a on the side is provided in the bucket body 1 so as to face upward when the bucket body is laid down sideways, when the bucket body is hung with a crane and laid down on the ground, At the same time as the stand lands first, it naturally tilts from the eccentric support point and stops properly in position, so that the bucket body can be tilted smoothly and securely without idling. In addition, the bucket body does not fall sideways and does not rotate or move in the middle, so it is possible to efficiently receive fresh concrete from the mixer truck, and even after the bucket body falls sideways, Since the supporting pieces on the side of the holder contact the ground parallel to the ground and hold the bucket horizontally, it is possible to safely and accurately receive the raw concrete from the mixer truck. Also, when the bucket body is horizontally oriented, the opening provided on the side of the hopper 5 is oriented upward, which allows the concrete to be poured more reliably from the chute of the mixer truck and has a simple and durable structure. It can be implemented at low cost.

[Brief description of drawings]

The drawings show one embodiment of the present invention. FIG. 1 is a side view of a concrete bucket according to the present invention, FIG. 2 is a front view thereof, and FIG. 3 is a front view of a bucket body, FIG. FIG. 5 is a side view showing the operation of the bucket of the present invention, and FIG. 6 is a side view showing the operation of the conventional boat bucket. 1 ... Bucket main body, 2 ... Stand 3 ... Pivot pin, 4 ... Bucket holder 5 ... Hopper, 12 ... Mixer truck 4a ... Support piece, 5a ... Hopper opening

Claims (1)

[Scope of utility model registration request] 1. A bucket main body 1 which is hung on a crane and carries ready-mixed concrete, is provided with a grounding stand 2 and a bucket holder 4 which is connected to a top of the ground stand 2 so as to be capable of undulating. The position of the pivot pin 3 serving as a connecting portion between the stand 2 and the bucket holder 4 is set to a position lower than the center of gravity of the bucket body 1 and laterally displaced from its axis, and A concrete bucket comprising a hopper 5 having an opening 5a on its side so as to face upward when the bucket body is laid down.