Bucket

Abstract

To provide a bucket capable of efficiently and quickly separating soil and sand of a predetermined particle size from a soil and sand mixture containing soil, rubble, etc.SOLUTION: A bucket that can be attached to a work machine is composed of: a connection portion capable of being connected to the work machine; a frame fixed to the connection portion; a bucket body rotatably supported on the frame and having an opening formed therein; a motor rotating the bucket body; and teeth portion provided on the frame and capable of pouring soil and sand mixture into the bucket body through the opening. A number of discharge holes are provided on at least a circumferential side face of the bucket body, and by rotating the bucket body with the motor, soil and sand of a predetermined size can be discharged from the soil and sand mixture by centrifugal force.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a bucket that can be attached primarily to a work machine such as a hydraulic excavator. [Background technology]

[0002] Conventionally, a bucket with a sieving function has been known that is attached to a hydraulic excavator such as a backhoe to separate materials containing a mixture of soil, rubble, etc., and has a bucket body (1) attached to the tip of the working arm (3) of the civil engineering machine, a pair of fixing parts (4) provided on the bucket body, and an eccentric ring (8), an eccentric ring arm (19), a swinging piece (21) via the eccentric ring arm, and a pair of swinging connecting pieces (15, 16) at the front and rear, each of which has a plurality of crosspieces (11) and small holes (12) that swing around a pivot (13) in an inclined state (Patent Document 1).

[0003] The above-mentioned bucket with sieving function can sift concrete waste, earth and sand, gravel, etc. scooped up by each curved sieve mesh (9), and has the advantage that sieving work can be done more easily and quickly than in the conventional method where the material is first scooped up by the bucket, then carried to a designated location and emptied into a sieving machine there.

[0004] However, the above-mentioned sieving bucket has a structure that separates soil and solids by swinging motion (vibration), which has the problem that the structure is complex and it takes time to separate the materials to be separated (the symbol is that of Patent Document 1). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 9-78624 Summary of the Invention [Problem to be solved by the invention]

[0006] In view of the problems with Patent Document 1 described above, the present invention aims to provide a bucket that has a simplified structure and uses a different technical principle to efficiently and quickly separate soil and sand of a specified particle size from a soil and sand mixture containing soil, rubble, etc. [Means for solving the problem]

[0007] In order to achieve the above object, the bucket described in claim 1 of the present invention is a bucket that can be attached to a work machine, and is composed of a connection part that can be connected to the work machine, a frame fixed to the connection part, a bucket body that is rotatably supported on the frame and has an opening formed therein, a motor that rotates the bucket body, and teeth that are attached to the frame and can pour a soil and sand mixture into the bucket body through the opening, and is characterized in that a number of discharge holes are provided on at least the circumferential side surfaces of the bucket body, and by rotating the bucket body with the motor, soil and sand of a predetermined size can be discharged from the soil and sand mixture by centrifugal force. The bucket according to claim 2 is characterized in that the bucket body is formed in a substantially cylindrical shape with one side open. [Effects of the Invention]

[0008] As is clear from the above description, the present invention provides the following effects. (1) In the invention described in claim 1, by rotating the bucket body, it is possible to discharge the soil and sand of a predetermined size from the soil and sand mixture by centrifugal force. Therefore, solid matter such as rubble contained in the soil and sand can be separated more reliably and efficiently. (2) In the invention described in claim 2, the same effect as (1) above can be obtained, and since it is formed in an approximately cylindrical shape with one side open, the soil and sand mixture can be separated more efficiently by centrifugal force. [Brief explanation of the drawings]

[0009] 1 to 6 are explanatory diagrams showing a first embodiment of the present invention. [Figure 1] FIG. 2 is a front view of the bucket according to the first embodiment. [Figure 2] FIG. 2 is a left side view of the bucket according to the first embodiment. [Figure 3] FIG. 2 is a right side view of the bucket according to the first embodiment. [Figure 4] FIG. 2 is an explanatory diagram of the bucket attached to the work machine. [Figure 5] FIG. 10 is an explanatory diagram of the state in which the soil and sand mixture is stored in the bucket body. [Figure 6] FIG. 10 is an explanatory diagram of the state of separating a soil and sand mixture. DETAILED DESCRIPTION OF THE INVENTION

[0010] The present invention will be described in detail below with reference to the embodiments shown in the drawings. Note that the up-down direction refers to the up-down direction in Fig. 1, the left-right direction refers to the left-right direction in Fig. 1, and the front-rear direction refers to the left-right direction in Fig. 2.

[0011] In a first embodiment of the present invention shown in FIGS. 1 to 6, reference numeral 1 denotes a bucket that can be attached to a work machine 2 such as a hydraulic excavator.

[0012] Specifically, as shown in Figures 1 to 3, this bucket is composed of a connection part 3 that can be connected to a work machine 2, a frame 4 fixed to the connection part 3, a bucket body 5 that is rotatably supported on the frame 4 and has an opening 9 formed therein, a motor 6 that rotates the bucket body 5, and teeth part 8 that are provided on the frame 4 and that can pour a soil mixture 7 into the bucket body 5 through the opening 9.

[0013] In this embodiment, the connection part 3 is formed with a pair of pin insertion parts, and is connected to a work machine 2 such as a hydraulic excavator by pins or the like.

[0014] The connecting portion 3 is fixed to the upper end of a frame 4 that is substantially cylindrical and has a frame-like shape, and a bucket body 5 is provided inside the frame 4.

[0015] In this embodiment, the bucket body 5 is a cylindrical member with an opening 9 formed on one side surface, and a number of discharge holes 10 are provided on the side surface in the circumferential direction. A mounting shaft 11 that is coaxial with the bucket body is fixed to this bucket body 5, and the surface facing the opening 9 is rotatably mounted to the frame 4 via the mounting shaft 11 in a journaled state. This mounting shaft 11 is connected to a motor 6 provided on the frame, and by starting the motor 6, the bucket body 5 can be rotated via the mounting shaft 11. Note that this motor 6 is connected to and controlled by a hydraulic pump or the like of the work machine 2.

[0016] In this embodiment, the bucket body 5 is formed from a mesh-like member, and the openings in the mesh (gaps in the mesh) serve as the numerous discharge holes 10. These numerous discharge holes 10 are sized to allow soil and sand of a predetermined particle size to pass through, and can be changed as appropriate to suit the size of the material to be separated. Also, while the bucket body 5 is formed from a mesh-like member in this embodiment, for example, the bucket body 5 may be formed from a thin metal plate or the like, and the discharge holes 10 may be formed by forming numerous holes in the bucket body 5.

[0017] On the opening 9 side of the bucket body 5, the bucket body 5 is provided with teeth 8 that can scoop up the earth and sand mixture 7 or dig into the ground or the like.

[0018] In this embodiment, the tooth portion 8 is made up of a plate-shaped base portion 12 attached to the frame, claws 13 provided at the tip of the base portion 12 and capable of digging the ground, and a guide portion 14 that guides the soil mixture 7 into the bucket body 5. In this embodiment, the guide portion 14 is made up of side plates 14a provided on the front-to-rear sides of the bucket body 5, and an inclined bottom plate 14b. Note that the guide portion 14 may have any shape as long as it can efficiently guide the soil mixture 7 into the bucket body 5. Furthermore, the claws 13 may also be flat.

[0019] The bucket 1 of the present invention is used as an attachment to a work machine 2, mainly a hydraulic excavator 2 as shown in FIG.

[0020] When using this bucket 1, as shown in Figure 5, first, the arm of the hydraulic excavator 2 is operated to scoop up a soil mixture 7, which is a mixture of soil and various solids, using the teeth 8, and the soil mixture 7 is then guided into the bucket body 5.

[0021] After the soil / sand mixture 7 has been stored inside the bucket body, the motor 6 is operated to rotate the bucket body 5 at high speed around the mounting shaft 11. At this time, it is desirable to operate the boom or the like so that the opening 9 faces upward.

[0022] In this embodiment, the bucket body 5 is formed in a generally cylindrical shape with one side open. Therefore, when the bucket body 5 is rotated, it can be rotated without protruding from the frame 4, and work can be performed efficiently without the bucket body 5 coming into contact with obstacles and the like located outside the frame 4.

[0023] By rotating bucket body 5 at high speed using motor 6, soil 7a of a predetermined size from soil / sand mixture 7 can be discharged from bucket body 5 to the outside through discharge hole 10 by centrifugal force, as shown in Figure 6. Only large solids 7b such as rubble, stones, rocks, and wood chips remain in bucket body 5, so these can be separated from soil / sand 7a for disposal.

[0024] This allows the separation of soil and sand of a predetermined particle size from other solid matter. In addition, by rotating the bucket body 5 at high speed around the mounting shaft 11 to separate them by centrifugal force, the separation of soil and sand of a predetermined particle size from other solid matter can be made more efficient.

[0025] In the embodiment of the present invention, a bucket body having a generally cylindrical shape with one side open is used, but a bucket body having a generally square cylindrical shape with one side open, or a generally spherical bucket body with an opening may also be used. Furthermore, the opening may be provided with a lid or the like so as not to impede the introduction of the soil and sand mixture. [Industrial Applicability]

[0026] The present invention finds application in the industry of manufacturing buckets for work machines. [Explanation of symbols]

[0027] 1: Bucket, 2: Work machine, 3: Connection part, 4: Frame, 5: Bucket body, 6: Motor, 7: Soil and sand mixture, 8: Tooth part, 9: Opening, 10: Discharge hole, 11: Mounting shaft; 12: Base portion; 13: Claw, 14: Guide part.

Claims

1. A bucket that can be attached to a work machine, The bucket comprises a connection part that can be connected to the work machine, a frame fixed to the connection part, a bucket body that is rotatably supported on the frame and has an opening, a motor that rotates the bucket body, and teeth that are provided on the frame and can pour a soil mixture into the bucket body through the opening, A bucket having a number of discharge holes provided on at least the circumferential side of the bucket body, and capable of discharging soil of a predetermined size from the soil mixture by centrifugal force by rotating the bucket body with the motor.

2. 2. The bucket according to claim 1, wherein the bucket body is formed in a substantially cylindrical shape with one side open.

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