JP3082151B2 - Lifting bucket - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lifting bucket for discharging soil when excavating the ground in excavation work of a deep shaft or the like, and more particularly to a large-capacity lifting bucket.

[0002]

2. Description of the Related Art Conventionally, a lifting bucket is discharged by a method such as opening and closing a bottom lid or tipping over a bucket using a main winding wire and an auxiliary winding wire of a lifting crane as represented by a clamshell method. It is configured as follows. In addition, the opening at the upper part of the lifting bucket after the transfer of the earth and sand to be transferred is completed is mainly subjected to sheet curing by human power.

[0003]

However, in the case of the above-mentioned excavated bucket, the following problems have occurred. In other words, the operation of the lifting bucket requires simultaneous operation of the main winding wire and the auxiliary winding wire, and the operation requires a skilled operator. It was difficult. In addition, the upper opening of the lifting bucket is not limited to the case where the soil loaded in the lifting bucket is moved or the opening and closing of the lifting bucket is performed, even in the case of sheet curing, not to mention the opening. There is also a problem that it is easy to fall during operation, and the earth and sand that has fallen on the construction site deteriorates a foothold of the worker.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and is simple in operation, can improve work efficiency without requiring a skilled worker, and secures workability at a construction site. It is an object of the present invention to provide a lifting bucket capable of performing the above-mentioned operations.

[0005]

SUMMARY OF THE INVENTION The present invention provides a bucket body having upper and lower openings, an upper lid mechanism for opening and closing the upper opening of the bucket body, and a bottom lid mechanism for opening and closing the lower opening of the bucket body. The upper lid mechanism comprises: an upper lid body that opens and closes an upper opening of the bucket body; and a lifting jig that is connected to a lifting device so that the bucket body can be lifted. The lifting jig is attached to the bucket body so as to be movable up and down, and a suspension member for suspending the upper lid body from the lifting jig is interposed between the lifting jig and the upper lid body. Is set so that the upper lid body closes the upper opening when the lifting jig is positioned above .

[0006]

According to the earthing bucket of the present invention, if the lifting jig is used to apply a lifting force to the lifting jig to lift the bucket body, the lifting jig moves the lifting jig upward. The upper lid body is moved by an upward pulling force on the bucket body generated by the suspension member bearing the weight of the lifting bucket, and the upper opening is closed. Further, by moving the lifting jig downward from the suspended state while the bucket body is suspended, the relative distance between the lifting jig and the bucket body changes, and the upper lid body becomes movable, and the upper opening is opened. The part can be opened.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. In the drawing, reference numeral 10 denotes a lifting bucket according to the present embodiment, 20 denotes a bucket body, 30 denotes an upper cover mechanism, and 40 denotes a bottom cover mechanism.

The bucket body 20 is composed of a rectangular parallelepiped frame-shaped main body frame 23 and a lifting hopper 24 attached to the center of the main body frame 23. The main body frame 23 is formed by combining rigid members such as angle members. The earth-lifting hopper 24 is attached with a bottomless quadrangular pyramid with the bottom on the side having a larger cross-sectional area facing upward.

As shown in FIG. 1 and FIG.
The upper opening 2 of the bucket body 20 is disposed so as to be vertically rotatable at the upper part of the bucket body 20 so as to face left and right.
1, upper and lower lid bodies 31, 31, which are vertically movable above and below the bucket body 20, and lifting jigs 32, 32 which are disposed opposite to each other in the front-rear direction of the bucket body 20; A tension wire (suspension member) 33 for suspending the 31 from the lifting jig 32 and a total of four wires symmetrically protruding from the left and right sides of the main body frame 23 to the center in a front view. A support member 34;
It consists of a total of four springs 35 attached between each support member 34 and the upper lid body 31.

As shown in FIG. 1, the upper lid body 31 is formed in a square shape when viewed from the front, and is attached to the distal end of the support member 34 via a support bracket 36 so that the base end can be vertically rotated. The link portion 31a includes a cover portion 31b, which is formed in a substantially "H" shape when viewed from the front, and an end portion of which is attached to an end of the link portion 31a. The upper lid main body 31 is attached one by one to each of the left and right sides of the main body frame 23 when viewed from the front, and closes the upper opening 21 when both are turned upward.

The lifting jig 32 is an elongated plate-like member, and has a slit 32a formed in the center along the length direction. The lifting jig 32 is attached to the main body frame 2.
By inserting the slit 32a into a pin 25 protruding and attached to the center of a component of the main body frame 23 horizontally installed on the upper part of the
It is possible to move within the range of a. The lifting jig 32 is vertically movable within the range of the slit 32a by suspending and supporting one end in the length direction from the jib tip of the lifting crane 50. The tension wire 33 is attached between a wire attachment portion 32b projecting left and right above the lifting jig 32 suspended from the lifting crane 50 and the center of the link portion 31a. Spring 35
Is interposed between the central portion of each link portion 31a and the central portion of the support member 34 to exert a tensile force between both.

Each of the upper cover mechanisms 30 includes a lifting bucket 10
Is lifted by the lifting crane 50, the lifting jig 32 moves upward, and the lower end of the slit 32a and the pin 2
5 are engaged, and support the load of the bucket body 20 via the pins 25. At the same time, the tension wire 33 is tensioned to suspend and lift the upper lid bodies 31, 31 upward, so that the upper lid bodies 31, 31 rotate inward of the bucket body 20, and the upper opening 21 is closed. It is designed to be closed. In addition, the upper lid mechanism 30 includes the lifting bucket 10.
By lowering the jib of the lifting crane 50 and moving the lifting jig 32 downward while suspending the jig on the work floor or the like,
Since the tension of the spring 35 is applied at the same time as the tension of the tension wire 33 is relaxed,
1 and 31 can be turned downward. In this state, when the tension force of the spring 35 acts, the upper lid main bodies 31 are respectively rotated outward, and the upper opening 21 is automatically opened. When the upper lid bodies 31 that rotate outwardly rotate the upper opening 21 about one-third of the movement path shown in FIG. 1 from the closed state, the tensile force of the spring 25 decreases. It turns by its own weight. The upper lid mechanism 30 is connected to a suspending jig 38 that is disposed horizontally and parallel to the front-rear direction of the bucket body 20 via a suspending rod 37 to which each lifting jig 32 is fixed. Therefore, it operates in conjunction with the operation of the jib.

The upper cover mechanism 30 may include one or three or more upper cover bodies 3 as long as the upper opening 21 can be opened and closed.
1 or a mode in which the upper lid body 31 is moved horizontally.

As shown in FIGS. 1 and 2, the bottom cover mechanism 40 includes a pair of bottom cover bodies 41, 41 which are vertically rotatably attached to the lower opening 22 of the bucket body 20, Air cylinder (expansion / contraction mechanism) that applies a rotating power to the main body 41
42, a wireless control device (control means) 43 for controlling the operation of the air cylinder 42, and an air tank 44 for supplying compressed air to the air cylinder 42.

As shown in FIG. 1, the bottom cover main body 41 is an elongated member having a rectangular shape in a cross section when the both ends in the longitudinal direction are closed by closing plates 45. And each bottom cover main body 41 is arranged along the front-back direction of the lifting hopper 24,
The two bottom lid brackets 46 , 46 projecting from the lower portions of both the front and rear surfaces of the earth lifting hopper 24, are vertically rotatably mounted via the closing plates 45, respectively.
The bottom cover brackets 46 , 46 are horizontally arranged at the lower central portion on the front and rear surfaces of the earth hopper 24 to form a pair. The bottom cover main bodies 41, 41 constituting the bottom cover mechanism 40 are arranged such that the opening sides of the "-" shape are facing each other, and are rotated to each other. The lower lid brackets 46 are attached to the bottom lid brackets 46 so that their lower ends coincide with each other.

In the configuration state of the bottom cover mechanism 40, the air cylinders 42 are installed on the left and right sides of the lifting hopper 24 in a front view. In each air cylinder 42, the base end of the main body is fixed to the upper part of each side surface of the excavating hopper 24. Connected to the unit. As shown in FIG. 1, the control device 43 is attached to the front center portion of the main body frame 23, is connected to the air tank 44, and controls the operation thereof. The control device 43
Has a built-in receiver for receiving a signal from a transmitter operated by an operator at a remote position, and enables the operation of the air tank 44 to be remotely controlled. The control device 43 may be configured to be operable from the cab of the lifting crane 50 by being electrically connected to the lifting crane 50. The air tank 44 is fixed to a lower portion of the main body frame 23.
The air tank 44 is connected to the air cylinder 42 by a hose (not shown). The compressed air is sent to the air cylinder 42 under the control of the control device 43 to extend the rod of the air cylinder 42.

The bottom cover mechanism 40 operates the left and right air tanks 44 similarly under the control of the control device 43. The left and right air cylinders 42 are operated by the operation of the air tank 44.
When is expanded or contracted, each bottom cover main body 41 is vertically rotated around the bottom cover bracket 46 to open and close the lower opening 22.

Hereinafter, a method of unloading using the unloading bucket 10 of this embodiment at an excavation site will be described. As shown in FIG. 3, for example, in order to set up a lifting crane 50 on the ground 51 and to unload and carry out the earth removal when excavating the excavation position 52 with the lifting crane 50, Do. First, the lifting bucket 1 is attached to the tip of the suspension wire 53 of the lifting crane 50 via the horizontal suspension member 38 and the suspension rod 37.
Hang 0. When the lifting work of the lifting bucket 10 is completed, the lifting crane 50 is operated to
The lifting bucket 10 is moved to the position of the earth and sand to be lifted and suspended. In the case of hanging down, 10
Extends the air cylinder 42 to close the lower opening 22. In the lifting operation, when the lower surface of the main body frame 23 touches the excavation position 52, the lifting crane 50 is operated to carefully move the horizontal suspension member 38.
Is lowered, and the lifting jig 32 is lowered until the upper end of the slit 32 a contacts the pin 25. When the lifting jig 32 is lowered, the tensioned wire 33 is loosened, and the tension force of the spring 35 acts on each of the upper lid bodies 31 so that the right and left upper lid bodies 31 rotate outwardly to open the upper opening. The part 21 is automatically opened.

When the opening of the upper opening 21 is completed,
The earth and sand to be excavated by a backhoe or the like at the excavation position 52 is carried into the excavation hopper 24 from the upper opening 21. When the loading of the earth and sand is completed, the lifting crane 50 is operated to lift the earth lifting bucket 10 again, and the earth lifting bucket 10 is moved to the moving position of the earth and sand. When the lifting bucket 10 is lifted, if a lifting force is applied to the lifting jig 32 via the lifting rod 37 and the horizontal lifting member 38 to raise the lifting jig 32, the tension is raised. The upper lid main body 31 is pulled upward through the installation wire 33, and is again
1 is closed. When the lifting bucket 10 reaches the moving position of the earth and sand, the operator operates the transmitter to reduce the air cylinder 42 and rotate the bottom lid main bodies 41 and 41 outward, thereby opening the lower opening 22. The earth and sand in the lifting hopper 24 are discharged by opening.

Hereinafter, the effect of this embodiment will be described. In the lifting bucket 10 of the present embodiment, the opening and closing of the upper opening 21 is performed only by the vertical movement of the lifting jig 32, and the opening and closing of the lower opening 22 is performed by the operator's wireless operation, and each operation is easy. In addition, since each operation is independent, the operation of the lifting bucket 10 becomes simpler than the conventional operation method using a wire, and the work efficiency is improved. Further, at the time of lifting, since the upper opening 21 is automatically closed by the upper lid main body 31, it is possible to reliably prevent the earth and sand in the lifting hopper 24 from falling when the lifting bucket 10 moves. Good workability at the ground 51, the excavation position 52, and the like can be ensured.

The upper lid mechanism 30 may be any type as long as the upper opening 21 is closed by the upper lid body 31 when the lifting bucket 10 is lifted and the upper opening 21 can be opened when the lifting bucket 10 is lowered. Different forms may be used.

[0022]

As described above, according to the earthing bucket of the present invention , a bucket body having upper and lower openings, an upper lid mechanism for opening and closing the upper opening of the bucket body, and a lower opening of the bucket body. A lifting and lowering mechanism for opening and closing the upper portion of the bucket body, wherein the upper lid mechanism is configured to open and close an upper opening of the bucket body, and a lifting jig configured to be connected to a lifting device so that the bucket body can be lifted. And the lifting jig is attached to the bucket body so as to be vertically movable, and a suspending member for suspending the upper lid body from the lifting jig is interposed between the lifting jig and the upper lid body. And when the lifting jig is positioned above the lifting jig, the upper lid body is configured to close the upper opening , so that the lifting jig does not move up and down.
The upper opening can be opened and closed with only
Simplifies operation of the lifting bucket to improve work efficiency.
Can be planned. In addition, since the upper opening is automatically closed by the upper lid body during lifting, it is possible to reliably prevent the earth and sand in the lifting bucket from falling when the lifting bucket is moved. Workability can be ensured.

[Brief description of the drawings]

FIG. 1 is a front view showing a lifting bucket according to the present embodiment.

FIG. 2 is the side view.

FIG. 3 is an explanatory diagram showing a method of lifting using the lifting bucket.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Lifting bucket 20 Bucket main body 21 Upper opening 22 Lower opening 30 Upper lid mechanism 31 Upper lid main body 32 Lifting jig 33 Stretching wire 40 Bottom lid mechanism 41 Bottom lid main body 42 Air cylinder 43 Control device

Claims (1)

(57) [Claims] 1. An earth-lifting bucket for excavating earth and sand in excavation work such as a shaft, a bucket body having upper and lower openings, an upper lid mechanism for opening and closing an upper opening of the bucket body, and a bucket. A bottom lid mechanism that opens and closes a lower opening of the main body, the upper lid mechanism opens and closes an upper opening of the bucket main body, and a state in which the bucket main body can be lifted by being connected to a lifting device. The lifting jig is attached to the bucket body movably up and down, and further between the lifting jig and the upper lid body, the upper lid body is suspended from the lifting jig. A lifting bucket, wherein the lifting bracket is set to a length such that the upper lid body closes the upper opening when the lifting jig is positioned above. .