JPH0628542Y2 - Loading bucket with a single-sided bottom - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a bottom opening cargo handling bucket used for cargo handling of scraps, for example, in a steel manufacturing plant.

[Conventional technology]

Buckets are generally used for the handling of scraps such as metal fragments, but when using these buckets, the buckets must be hoisted and tilted by a crane, etc. There are various inconveniences such as the need for hanging a ball, and the necessity for an operator to move up and down to the bed when loading and unloading a transport vehicle.

The applicant of the present application as a means for solving these problems is
In the application for Japanese Patent Application No. 60-39552 and the application for Japanese Patent Application No. 60-39553, the bottom plate can be opened and closed without manpower, and the cargo can be safely loaded and unloaded without the need for slinging work. Disclosed bucket.

In this bucket, as shown in FIG. 4, an engaging projection A is provided on the side surface, and a bottom plate C provided with a curved bottom plate opening / closing guide projection B on the inside of the front end side surface is provided rotatably on the lower end of the side wall of the bucket. A bottom plate holding arm E having a hook D for engaging the engagement protrusion A at its tip is swingably detachable to a side wall,
Further, it has a structure in which an operating rod G is attached to one end of a swing arm H which is connected to a thrust mechanism F for applying a thrust force to the holding arm E in the engagement / disengagement direction.

[Problems to be solved by the invention]

However, this bucket has the advantage that it does not require manual labor to open the bottom plate compared to the conventional bucket, but if the bucket is placed on the ground in a tilted state, one of the bottom plates will not open or close, and In closing, one bottom plate was inconvenient because it could not be closed tightly between the bucket body and the ground.

An object of the present invention is to provide a single-opening bottom-opening cargo handling bucket capable of automatically opening and closing the bottom plate with a simple operation.

[Means for solving problems]

A cargo handling bucket having a single-sided bottom according to the present invention has one end pivotally attached to one side surface of a bucket body via a bottom plate shaft, and a bottom plate having an engaging projection at the other end, which is a free end, and a free end of the bottom plate. The lock mechanism provided with a seat and an engaging hook (14) elastically supported below the seat on the upper side of the bucket body on the side, and on the side opposite to the pivot side of the bottom plate of the bucket body. A bottom plate holding arm whose lower portion is pivotally attached to the arm shaft,
The bottom plate holding arm is disengaged from a hook that engages with the engagement protrusion of the bottom plate at its tip, an arm protrusion toward the bucket body at the same end, and a hook at the tip at the middle thereof. A holding arm spring having the other end fixed to the bucket body so that tension is generated in a direction, and after the hook of the bottom plate holding arm is engaged with the engaging protrusion of the bottom plate, It is characterized in that the bottom plate holding arm is locked by inserting the raised engaging hooks into the holes provided in the respective arm projections of the bottom plate holding arm.

〔Example〕

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 3.

In FIG. 1 showing a side surface of a bucket of the present invention and FIG. 2 showing a front surface thereof, 1 is a bucket body and 2 is a lifting hook. Reference numeral 3 denotes a bottom plate whose one end is pivotally supported on the bucket body 1 by a bottom plate shaft 4 so as to be openable and closable. Reference numeral 5 indicates a bottom plate holding arm, and the bottom plate holding arm 5 is pivotally attached to the bucket body 1 by an arm shaft 6 at a lower portion thereof. At the free end of the bottom plate 3, an engagement protrusion 8 that engages with a hook 7 provided at the tip of the bottom plate holding arm 5 is provided. A force is constantly applied to the middle portion of the bottom plate holding arm 5 in the direction of the arrow a (the direction in which the bottom opens) by the holding arm spring 9 having the other end fixed to the bucket body 1, and means for locking this. As the bottom plate holding arm 5
An arm protrusion 10 for locking the bucket body 1 is provided at one end on the opposite side of the hook 7 toward the bucket body 1 side.

Further, when the bucket is lifted, a slight gap is formed between the bucket body 1 and the bottom plate 3 on the side of the engaging projection 8. This gap is created between the hook 7 and the engaging projection 8 this time because the bucket body 1 and the bottom plate 3 come into close contact with each other when the bucket is placed on the ground.

When the engagement between the hook 7 and the engagement protrusion 8 is disengaged by the movement of the bottom plate holding arm 5 in the direction of the arrow a accompanying the unlocking of the arm protrusion 10, by lifting the bucket body 1 with a crane or the like, The bottom plate 3 is open at its free end side around the bottom plate shaft 4 depending on the lifting height. At this time,
The bottom plate holding arm 5 moves in the direction of arrow a due to the tension of the holding arm spring 9, but stops there by the bottom plate holding arm stopper 12. FIG. 3 is a perspective view of the lock mechanism, in which the arm protrusion 10 has holes similar to the receiving seat 13 provided in the bucket body 1, and the engaging hooks are inserted into these holes.
The bottom plate holding arm 5 is locked to the bucket body 1 by inserting the bottom plate holding arm 5. Here, the engaging hook 14 is constantly pushed upward by the hook spring 15 and is pivotally attached to the bucket body 1 by the lock lever shaft 16 provided in the bucket body 1, and the middle portion thereof is engaged. Followed by the lifting and lowering of the locking lever 17 that penetrates the hook 14.

This lock lever 17 is pushed down to maintain this state against the hook spring 15, and the engaging hook 14 is removed from the hole of the arm projection 10 described above. A pin 19 that can be inserted into and removed from the pin hole 18 is provided on the front surface of the bucket body 1, and a flange 20 for preventing the pin 19 from falling off is provided on the tip end side of the pin 19.

When preparing the scrap discharge, if the bucket is lifted a little above the ground, a gap is created between the bucket body 1 and the bottom plate 3, and the hook 7 at the tip of the bottom plate holding arm 5 and the engaging projection 8 of the bottom plate 3 are engaged. It will be in a combined state.

Then, the lock lever 17 is pushed down in the direction of arrow b in FIG.
After releasing the lock with 13, the pin 19 is moved in the direction of arrow c to be inserted into the pin hole 18 of the lock lever 17, and the lock lever 17 is fixed in a depressed state.

At this time, the bottom plate holding arm 5 tries to move in the direction of opening the bottom plate 3 by the tension of the holding arm spring 9 in the direction of the arrow a. The tension of the holding arm spring 9 causes the engagement projection 8 and the hook 7 to move. The frictional force due to the load generated on the contact surface cannot be overcome, and the engagement protrusion 8 of the bottom plate 3 and the hook 7 of the bottom plate holding arm 5 remain engaged.

When scrap is discharged, the bucket is lowered to the ground again, so that the gap between the bucket body 1 and the bottom plate 3 disappears, and this time there is a gap between the engaging protrusion 8 and the hook 7. The frictional force that has occurred on the contact surface of is eliminated, and the hook 7 is disengaged from the engaging projection 8 by the tension of the holding arm spring 9. When the bucket is lifted in this state, the bottom plate 3 opens and the scrap inside is discharged.

In order to make it easier to close the bottom plate 3, the tip end of the mounting member is attached so that the contact angle θ between the mounting member of the bottom plate 3 pivotally supported on the bottom plate shaft 4 and the bucket body 1 is about 60 ° with the ground. May be formed as the inclination angle limiting protrusion 11.

After discharging the scrap, the bucket is lowered to the ground and the bottom plate 3 is closed. Then, the bottom plate holding arm 5 is operated in the direction opposite to the arrow a to insert the arm protrusion 10 into the receiving seat 13 of the bucket body 1, and then the pin 19 Is retracted in the direction opposite to the arrow c and removed from the pin hole 18 of the locking lever 17, the engaging hook 14 is raised by the hook spring 15, and the engaging hook 14 is inserted in the hole between the seat 13 and the arm projection 10. By further operating the bottom plate holding arm 5 in the direction opposite to the arrow a so as to be inserted, the bottom plate holding arm 5 is locked to the bucket body 1.

As a result, the hook 7 of the bottom plate holding arm 5 is locked in a position where it engages with the engaging projection 8 of the bottom plate 3, and the bottom plate 3 does not open during transportation by a crane or the like.

[Effect of device]

According to the lock structure of the bottom plate holding arm of the single-opening type bottom opening cargo handling bucket of the present invention, one end of the bottom plate holding arm directly holds the bottom plate and the other end can be locked to the bucket body as described above. When it is necessary to maintain the closed state, the safety can be improved by locking the arm, and there is no mechanical waste when locking and unlocking the arm, and the structure is simple.

Further, since the bottom plate of the cargo handling bucket of the present invention is of a single-opening type, it is not necessary to provide an inwardly curved guide plate for opening and closing the bottom plate as in the conventional example.

[Brief description of drawings]

FIG. 1 is a side view of the present invention, FIG. 2 is a front view, FIG. 3 is a perspective view of a main portion thereof, and FIG. 4 is a front view showing an example of a conventional cargo handling bucket. 1: Bucket main body, 2: Lifting hook 3: Bottom plate, 4: Bottom plate shaft 5: Bottom plate holding arm, 6: Arm shaft 7: Hook, 8: Engagement protrusion 9: Holding arm spring 10: Arm protrusion, 11: Tilt Angle limiting protrusion 12: Bottom plate holding arm stopper 12: Seat, 14: Engaging hook 15: Hook spring, 16: Lock lever shaft 17: Lock lever, 18: Pin hole 19: Pin, 20: Tsuba

Claims (1)

[Scope of utility model registration request] 1. A bottom plate shaft having one end on one side of a bucket body (1)
(4) Pivotally attached via the other end, which is the free end
The bottom plate (3) is provided with a seat and the bottom plate (3) is seated on the free end side above the bucket body (1).
(13) and the engaging hook (1
4) and a bottom plate holding arm (5) whose lower part is pivotally attached to an arm shaft (6) provided on the side opposite to the pivot side of the bottom plate (3) of the bucket body (1). The bottom plate holding arm (5) has a hook (7) that engages with the engagement protrusion (8) of the bottom plate (3) at the tip thereof, and the bucket body (1) at the same end. A spring for a holding arm having the other end fixed to the bucket body (1) so that a tension is generated in the direction in which the engagement between the side-arm projection (10) and the hook (7) at the tip end is released in the middle thereof. (9) is provided, and after the hook (7) of the bottom plate holding arm (5) is engaged with the engaging protrusion (8) of the bottom plate (3), the seat of the bucket body (1) ( 13)
And the bottom plate holding arm (5) is to lock the bottom plate holding arm (5) by inserting the raised engaging hooks (14) into the holes provided in the arm protrusion (10). A cargo handling bucket having a single-sided bottom.