JPH0728307Y2 - Concrete bucket - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is used to receive ready-mixed concrete made by a mixer truck, suspend it with a crane, and carry it to a concrete placing site at a high place. The present invention relates to a concrete bucket, and more particularly to a concrete bucket that can be used both as a fall and a pit.

[Prior Art] As a conventional concrete bucket used for receiving fresh concrete made by a mixer truck in a bucket and transporting it to a high place, a falling type or a pit type is generally used.

[Problems to be solved by the invention] The conventional concrete bucket is the
As shown in the figure, the lower end 71 of the bucket main body 70 is a so-called loose ship-shaped bucket in which the hexagonal pointed end of the ship is rounded, and it is hung by the crane and landed on the ground and laid down sideways. When concrete is poured from the chute of a mixer truck and it is full, it is hoisted again and carried to a high place, but when hanging cleanly and dropping it to the ground and lying sideways, the ground is slipped and the landing position is accurately determined. On the other hand, in the course of falling over, the phenomenon of loose rotation around the ground contact point 71a at the lower end of the bucket occurs, and the mixer vehicle cannot be quickly and reliably received, which is also a problem in terms of safety.

In the pit type, as shown in Fig. 6, the bottom of the lower end is conical, and the bucket body 60 is suspended by a crane and inserted vertically into the pit 61, and the chute of the mixer truck is opened from the opening at the top of the bucket. When more concrete is poured and when it is full, it is lifted by a crane and carried up again, but since the bucket body is inserted directly into the pit, it cannot be inserted accurately and quickly into the pit. There is a problem that the outer wall of the bucket hits the wall surface of the pit, causing severe damage.

The present invention has been made in view of such problems of the conventional technique, and its purpose is to lift a bucket by a crane and drop it to the ground, and when it is inserted into a pit. An object of the present invention is to provide a concrete bucket that can be set up quickly and accurately and safely, and can be used both as a tipping type and a pit type.

[Means for Solving the Problems] In order to achieve the above object, a concrete bucket according to the present invention is a bucket body 1 which is hung on a crane and carries fresh concrete. It is fitted in a bucket guard frame 3 which is 2 and is pulled up sideways from the vertically downward posture to the side of the guide part so that it is offset from the center and confronts the conical guide part 2 of this bucket guard frame 3. The tilting table 4 is attached so as to be tiltable about a pivot 4b so as to be held in a horizontal position.

Further, in the concrete bucket, a pinch valve that is opened and closed by being laterally pressed by an electric cylinder is provided on the bottom of the hopper of the bucket body, and a manual opening / closing device that is a link that expands and contracts by operating the handle is provided on the pinch valve. Is preferred.

[Operation] FIG. 1 shows a case where the present invention is used as a pit type.

In the case of the pit type as shown in the figure, since the tipping table 4 is unnecessary, the tipping table 4 is pulled up and held sideways as shown in FIG.

In this way, when the bucket guard frame 3 is hung by hanging it on the clean hook 11 via the suspending tool 10, the bucket body 1 is vertically suspended together with the guard frame 3 and the pit is stopped.
It is inserted into pit 12 as it goes down from just above 12.

When inserting into the pit 12, since the conical guide portion 2 below the guard frame 3 serves as a guide, the position of the center is automatically corrected and the insertion is properly and promptly.

Next, when the present invention is used in a tipping type, the tipping table 4 is positioned so as to face the lower end of the conical guide portion 2 as shown by the chain line in FIG. As it descends, the base 4a of the tipping table 4 lands on the bucket body 1 in a vertical posture. When the descent continues, the bucket guard frame 1 as a whole tilts with the main body 1 hugging around the pivot 4b of the upper part of the tumbling table 4 as a fulcrum. .

When the bucket body 1 is inserted into a proper position in the pit or is tumbled down to the ground, fresh concrete is poured into the body 1 from the mixer truck through the chute.

When a predetermined amount of ready-mixed concrete is poured into the bucket body 1, the supply is stopped and the bucket body 1 is lifted again by the crane.

When the bucket body 1 is hoisted to a concrete pouring site at a high place, the electric cylinder 5 is usually sent by a command from the ground.
Is operated to open the pinch valve 6 with the pitch roller 6a, and the concrete in the inside is flowed out from the bottom of the bucket body 1 through the hose 13.

When the pinch valve 6 is operated by the manual opening / closing device 9, the handle 7 is manually operated.

When the handle 7 is rotated in the forward or reverse direction, the screw shaft 7a is rotated together therewith and the link 8 is extended or shortened by screwing the screw. Therefore, the pinch roller 6a is irrelevant to the operation of the electric cylinder 5. Then, the pinch valve 6 is pushed to close the valve, or released by pushing to open the valve.

[Embodiment] The bucket body 1 has a hopper-shaped conical bottom portion 1a integrally provided at the lower portion of a cylindrical body, and has a receiving opening 1b at the upper portion for pouring fresh concrete from a chute from a mixer truck.

The bucket guard frame 3 has a vertical pipe 3 formed by a steel wire including an upper annular body 3a, an intermediate annular body 3b, a small annular body 3c, and a lower annular body 3d.
At e.3f, they are integrally connected to form a frame having a spinning type outer shape, and the bucket body 1 is fitted into this frame to be integrated by welding or the like.
The lower half portion of the bucket guard frame 3 is the conical guide portion 2. The annular body 3d at the lower end is a split ring having an open front part, and the hose 13 is led out from the open part 3g when it falls.

The tipping table 4 has a triangular frame when viewed from the side, a pivot portion 4b is provided at the top of the triangle, and this is pivotally attached to the small annular body 3c via a bracket. The pivot portion 4b of the tipping table 4 is displaced forward from the center of the bucket body 1 and the position is set so that the center of gravity is at the top.

The pinch valve 6 is made of a material such as a rubber hose and is of a type in which the inner passage is blocked when pressed by rolls from both the left and right sides.
Actuates the arm 5b connected to the piston rod 5a.
Is pushed or pulled, and the other arm 1 is
5'is also linked in the same direction at the same time.

The manual opening / closing device 9 has a structure in which the link 8 is configured as a pantograph type and the piston rod end of the cylinder 5 and the pitch roller are
It is provided so as to extend between the brackets 16 of 6a.

With this configuration, the electric cylinder 5 is in the inoperative state,
When the handle 7 is operated with the piston rod 5a shortened, the pitch roller 6a can be pushed to open and close the valve manually regardless of the operation of the electric cylinder.

The bucket guard frame 3 is provided with a carrier 17 so that it can be raised and lowered with a pivot pin 18 as a fulcrum on an annular body 3a at the upper end.

[Effects of the Invention] Since the present invention is configured as described above, the bucket body can be used for both the pit type and the tipping type. In particular, when using the pit type, pull up the tipping table horizontally and horizontally. Because it is not obstructive, the conical guide part in the lower half of the bucket guard frame guides the insertion into the pit smoothly, and the guard frame protects the bucket body when the insert is lowered and pulled up. Increased sex and less damage. Also, in the case of the tipping type, as the tipping table in the downward posture touches the ground, the bucket body naturally tilts horizontally sideways while tilting, so the position is not fixed or does not rotate freely, and the set position is accurate. Highly safe. Further, in the present invention, the pinch valve can be automatically operated by the electric cylinder, but in the non-operated state, the manual opening / closing device can easily and surely perform the manual opening / closing of the valve.

[Brief description of drawings]

The drawings show an embodiment of the present invention, in which FIG. 1 is a front view of a concrete bucket according to the present invention, FIG. 2 is a side view thereof, FIG. 3 is a plan view, and FIG. 4 is FIG. 2A. FIG. 5 is an enlarged front view of the manual opening / closing device, and FIGS. 6 and 7 are side views of a concrete bucket showing a conventional example. DESCRIPTION OF SYMBOLS 1 ... Bucket main body, 2 ... Cone guide part 3 ... Bucket guard frame, 4 ... Inversion stand 5 ... Electric cylinder, 6 ... Pinch valve 7 ... Handle, 8 ... Link 9 ... Manual opening / closing device

Claims (2)

[Scope of utility model registration request] 1. A bucket body 1 which is hung on a crane and carries ready-mixed concrete.
Is fitted to the bucket guard frame 3, and the cone guide portion 2 of the bucket guard frame 3 is pulled up sideways to the lateral side of the guide portion from a vertically downward posture so as to be positioned so as to be offset from the center and face the lower end portion thereof. A concrete bucket characterized in that a tipping table 4 is attached so as to be tiltable around a pivot 4b so as to be held in a horizontal posture. 2. A pinch valve 6 which is opened and closed by being laterally pressed by an electric cylinder 5 is provided at the bottom of the hopper of the bucket body 1, and a manual operation is provided on the pinch valve 6 by a link 8 which expands and contracts when a handle 7 is operated. Switchgear 9
The concrete bucket according to claim 1, wherein the concrete bucket is provided.