JPH0547052U - Rocking bucket - Google Patents

Abstract

(57) [Summary] (Modified) [Objective] The object of the present invention is to provide an oscillating bucket that is easy to operate, has less vibration of the machine body, and can efficiently perform rock sieving. . [Structure] The bucket body comprises an upper bucket 22 and a lower bucket 24, which are pin-connected to each other. A crankshaft 30 rotated by a drive source is supported on the upper bucket. The crankshaft and the lower bucket are connected by a connecting rod 38. The rotation of the crankshaft causes the lower bucket to swing around the pin with respect to the upper bucket.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a rocking bucket applied to a construction machine such as an excavator.

[0002]

[Prior Art]

 A conventional bucket used for a hydraulic excavator that is an excavator will be described with reference to FIG. An upper revolving structure 4 is rotatably supported on the lower traveling structure 2. A boom 6 is supported on the upper swing body 4, an arm 8 is supported on the tip of the boom 6, and a bucket 10 is supported on the tip of the arm 8. A boom cylinder 12 is provided between the upper swing body 4 and the boom 6, an arm cylinder 14 is provided between the boom 6 and the arm 8, and a bucket cylinder 16 is provided between the arm 8 and the bucket 10. Is provided. The above constitutes the front part of the hydraulic excavator. By interlocking the boom cylinder 12, the arm cylinder 14, and the bucket cylinder 16, the bucket 10 is appropriately operated to perform work such as excavation, earth removal or rock soil sieving.

[0003]

[Problems to be solved by the device]

 However, in the above configuration, when performing rock and soil sieving work, after excavation, the operator independently operates the control lever provided in the driver's seat (not shown) to swing the bucket 10 to screen the rock and soil. , Is sorting. Therefore, the above-mentioned conventional configuration has the following problems to be solved. (1) Since the entire bucket 10 is swung by the control lever operation, the control lever operation must be frequently operated, the operation becomes complicated, and the work load of the operator increases and fatigue increases. (2) Since the bucket cylinder 16 located at the tip of the front portion is operated, vibration of the machine body increases, operator fatigue increases, and durability of each part of the machine body is impaired.

Therefore, it is an object of the present invention to provide an improved rocking bucket which is easy to operate, has less vibration of the machine body, and can efficiently perform rock soil sieving work.

[0005]

[Means for Solving the Problems]

 In order to achieve the above main object, according to the present invention, a bucket body is composed of an upper bucket and a lower bucket, and the upper bucket and the lower bucket are connected by a shaft so as to be capable of relative rotational movement. Is supported by a drive source and a crankshaft rotated by the drive source, and the crankshaft and the lower bucket are connected by a connecting rod, so that the lower bucket is attached to the upper bucket. And a swinging bucket configured to swing about the axis.

[0006]

【Example】

 Hereinafter, a swing bucket improved according to the present invention will be described in detail based on embodiments with reference to the accompanying drawings. With reference to FIGS. 1 and 2, the swinging bucket body 20 includes an upper bucket 22 and a lower bucket 24. The upper bucket 22 and the lower bucket 24 are connected to each other by shafts (pins) 26 which are positioned coaxially with each other on both sides so as to be capable of relative rotational movement. The upper bucket 22 supports a hydraulic motor 28, which is a drive source, and a crankshaft 30 rotated by the hydraulic motor 28. More specifically, a cover 23, which is a frame member, is provided below the upper bucket 22 and a hydraulic motor 28 is provided in the center of the chamber above it. A drive shaft 32 is provided so as to project from both sides of the hydraulic motor 28, and each drive shaft 32 is connected to each crank shaft 30 positioned on both sides of the upper bucket 22 via a speed reducer 34 and a coupling 36. Has been done. Each crankshaft 30 and the lower bucket 24 are connected by a connecting rod 38. That is, a pair of brackets 42 and 44 are provided on both sides of the lower bucket 24 covered with the cover 40, and the lower end of each connecting rod 38 is connected to the brackets 42 and 44 by a pin 46. Has been done. The upper end of each connecting rod 38 is connected to the crank pin portion of each crank shaft 30. In addition, holes for the connecting rods 38 are formed on both sides of the cover 23 of the upper bucket 22.

When performing a sieving work for rock and soil, an operator may perform an operation of rotating the hydraulic motor 28 in the driver's seat. For example, it is performed by switching the operation lever of the hydraulic motor 28 to the operating position or turning on the switch of the electromagnetic valve for operating the hydraulic motor 28. This operation causes the hydraulic motor 28 to rotate, and this rotation is transmitted to each crankshaft 30 via each drive shaft 32, each speed reducer 34, and each coupling 36. The rotary motion of each crankshaft 30 is converted into a linear reciprocating motion by each connecting rod 38 and transmitted to the lower bucket 24. The lower bucket 24 is swung around the shaft 26 with respect to the upper bucket 22. As a result, rocks and soil are screened.

The present invention has been described above in detail based on the embodiments, but the present invention is not limited to the above embodiments, and various modifications or modifications can be made within the scope of the present invention. Is.

[0009]

[Effect of the device]

 As described above, according to the present invention described based on the implementation, the following effects can be obtained. (1) Since the lower bucket swings with respect to the upper bucket simply by operating the drive source of the swinging bucket, frequent operation of the control lever causes the entire bucket to swing as compared with the conventional apparatus. The rocking operation becomes extremely easy. As a result, the work load on the operator is reduced and fatigue is eliminated. In addition, the efficiency of sieving work for rocks and soil is greatly improved. (2) Since the lower bucket can be swung with respect to the upper bucket, it is not necessary to operate the bucket cylinder located at the front end of the front portion as in the conventional case. As a result, machine vibration is reduced, operator fatigue is reduced, and the durability of each part of the machine is improved.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of an oscillating bucket improved according to the present invention, with a part broken away.

FIG. 2 is a side view of FIG. 1 with a part broken away.

FIG. 3 is a side view of a hydraulic excavator including a conventional bucket.

[Explanation of symbols]

 20 rocking bucket body 22 upper bucket 24 lower bucket 26 shaft 28 hydraulic motor 30 crankshaft 38 connecting rod

Claims (1)

[Scope of utility model registration request] 1. A bucket body is composed of an upper bucket and a lower bucket, and the upper bucket and the lower bucket are connected by a shaft so as to be capable of relative rotational movement. The upper bucket has a drive source and the drive source. A crankshaft rotated by the crankshaft is supported, and the crankshaft and the lower bucket are connected by a connecting rod so that the lower bucket can swing about the shaft with respect to the upper bucket. An oscillating bucket characterized in that