JPH0549846U - Buckets such as hydraulic excavators - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a bucket such as a hydraulic excavator that does not require a large driving force, has high energy efficiency, does not consume vibration energy for vehicle vibration, and does not deteriorate habitability of the cab. thing. [Structure] Space portion 1 is provided at the bottom of the tip of bucket body 10.
4, the base end portions of a plurality (four in the figure) of the tooth members 20 arranged in parallel with the tip end portion of the bucket body 10 are swung through the pin 15 in the space portion 14. Coil springs 16, 16 as elastic members that are mounted so as to be elastic and elastically support the base end portions of the plurality of tooth members 20 are arranged in the space portion 14, and on the tip end side of the bucket body 10. Position of the plurality of tooth members 20 toward the base end, that is, the space portion 14
The vibrating means 30 is arranged on the back side of the tooth member 20 to strike the base end portion of the tooth member 20 to vertically vibrate the tip end side 22 of each tooth member 20.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a bucket such as a hydraulic excavator, and more particularly to a bucket such as a hydraulic excavator that vibrates not only the entire bucket but the teeth at the tip of the bucket during excavation.

[0002]

[Prior Art]

 When excavating with a hydraulic excavator or the like, it is preferable to give vibration to the ground to reduce excavation resistance of the ground to be excavated.

Therefore, for example, a hydraulic excavator as shown in FIG. 3 is known. According to this hydraulic excavator, the vibrating cylinder 51 is inserted and arranged coaxially with the bucket drive cylinder 50, and at the time of excavation, excavation is performed while vibrating the entire bucket body 53 provided at the tip of the arm 52 by the vibrating cylinder 51. ..

In FIG. 3, reference numeral 54 is a link, 55 is a rod, 56 is a boom, 57 is a cab, 58 is an upper swing body, and 59 is a traveling device.

[0005]

[Problems to be solved by the device]

 However, if the vibration cylinder 51 vibrates the entire bucket body 53 like the hydraulic excavator, a large driving force is required and the link 54, rod 55, etc. near the bucket body 53 also vibrate. The energy efficiency was poor. Further, a large vibration force is propagated to the upper revolving structure 58 through the front structure such as the arm 52 and the boom 56, and the vibration energy is consumed for the vibration of the vehicle. There was a defect that the cab 57 had poor habitability.

Therefore, an object of the present invention is to provide a bucket such as a hydraulic excavator that does not require a large driving force, has high energy efficiency, does not consume vibration energy for vehicle vibration, and does not deteriorate habitability of a cab. To provide.

[0007]

[Means for Solving the Problems]

 According to the present invention, the base end portions of a plurality of tooth members arranged in parallel with the tip end portion of the bucket body are swingably attached to the tip end portion of the bucket body, respectively, and at the tip end side of the bucket body. In addition, a vibrating means is provided at a position near the base end portions of the plurality of tooth members to vibrate the tip end sides of the plurality of tooth members by striking the base end portions of the tooth members. The object is achieved by providing a bucket such as a shovel.

A bucket such as a hydraulic excavator according to the present invention is characterized in that the vibrating means is arranged in a space provided at the bottom of the tip of the bucket body.

Further, in the bucket of the hydraulic excavator or the like of the present invention, the vibrating means has a plurality of protrusions for hitting the base end portions of the plurality of tooth members arranged on the peripheral surface, and is rotatable in the space portion. It is characterized in that it is constituted by a shaft mounted on the vehicle and a motor for rotationally driving the shaft.

Further, in the bucket of the hydraulic excavator or the like of the present invention, the plurality of protrusions of the shaft are sequentially arranged on the peripheral surface of the shaft so that the base end portions of the plurality of tooth members are sequentially rotated as the shaft rotates. The feature is that they are placed out of phase with each other so that they are tapped.

[0011]

[Action]

 When the vibrating means is operated during excavation, the entire bucket does not vibrate, but only the plurality of tooth members vibrate, reducing excavation resistance.

[0012]

Embodiments Embodiments of buckets such as hydraulic excavators according to the present invention will be described below.

1 and 2 show an embodiment of a bucket for a hydraulic excavator or the like according to the present invention, FIG. 1 is a vertical sectional view of the bucket of the hydraulic excavator, and FIG. It is a side view.

As shown in FIGS. 1 and 2, the bucket of the present embodiment has a space portion 14 formed at the bottom of the tip portion of the bucket body 10, and the space portion 14 is provided with a space at the tip portion of the bucket body 10. The respective base end portions of a plurality (four in the figure) of the tooth members 20 arranged in parallel are swingably attached via the respective pins 15, and the plurality of tooth members are provided in the space portion 14. Coil springs 16 and 16 as elastic members for elastically supporting the base end portions of the plurality of teeth members 20 are arranged on the tip end side of the bucket body 10 near the base end portions of the plurality of tooth members 20, that is, On the back side of the space portion 14, vibrating means 30 is arranged to strike the base end portion of the tooth member 20 to vertically vibrate the tip end side 22 of each of the plurality of tooth members 20.

The space portion 14 is formed by a bottom plate 11 of the bucket body 10, a cover 12 provided on the bottom plate 11 with a gap, and a left and right side plate 13 of the bucket body 10. ..

The tooth member 20 is configured by fixing a tooth 22 to the tip of a tooth mounting plate 21 that is the base end portion by welding. As shown in FIG. 2, the tooth mounting plate 21 has a shape different from that of the rectangular plate-shaped member located at the central portion of the one located on the side of the left and right side plates 13 with the corners cut out.

The coil springs 16 and 16 form the space portion 14 so as to elastically support the rear end portion of the tooth mounting plate 21 with respect to the pin 15, and the bottom plate 11 and the cover 12 respectively. It is fixed by welding. The coil springs 16 and 16 receive the reaction force of the tooth mounting plate 21 when the tooth mounting plate 21 is hit by the vibrating means 30. The vibrating means 30 has the same number of protrusions 31 as the teeth mounting plate 21 on the circumferential surface, and a shaft 33 that is rotatably mounted in the space 14 via a rotating pin 32 and the shaft. The left and right side plates 13, which are axially opposite end positions of the shaft 33, are respectively fixedly arranged, and are constituted by hydraulic motors 34, 34 for rotationally driving the shaft 33.

Here, with the rotation of the shaft 33, the protrusion 31 moves from the tooth mounting plate 21 located on the right side of FIG. 2 toward the tooth mounting plate 21 located on the left side of FIG. Four teeth are arranged at 90 ° positions in the circumferential direction of the shaft 32 so that the teeth mounting plates 21 are sequentially hit.

The hydraulic motor 34 is operated by pressure oil for a hydraulic excavator, which is supplied from a hydraulic line 36 protected by a hydraulic line cover 35. For example, the shaft 33 has a frequency of about 10 Hz. It can be rotated with.

Next, the operation of the bucket of the above embodiment will be described.

When pressure oil is supplied from the hydraulic line 36 to the hydraulic motor 34 at the time of excavation to operate the hydraulic motor 34, the shaft 33 rotates at a high speed, and the protrusion 31 located on the right side in FIG. Each of the protrusions 31 hits the tooth mounting plate 21 positioned on the side, and then the protrusion 31 positioned on the left side of the protrusion 31 hits the tooth mounting plate 21 positioned on the same side. Tap in sequence.

As a result, the teeth mounting plate 21 swings around the pin 15 as a fulcrum, and the teeth 22 located on the right side of FIG. 2 vibrate upward and downward sequentially from the teeth 22 located on the left side of FIG. At this time, one of the coil springs 16 and 16 is stretched and the other is compressed by the tooth mounting plate 21 to alternately repeat the release and storage of elastic energy to assist the vibration of the tooth 22.

As described above, in the bucket of the above-described embodiment, by vibrating only each tooth member 20, the excavation resistance of the ground to be excavated can be reduced and the excavation performance can be improved.

Further, since not only the entire bucket body 10 is vibrated but only the tooth member 20 important for excavation is vibrated, a large driving force is not required and energy efficiency is good.

Further, since the vibration is transmitted only to the teeth member 20 and not to the vehicle portion of the hydraulic excavator, the wear of each portion of the vehicle is not accelerated and the comfortability of the operator's cabin is deteriorated. There is no fear.

Further, since the protrusions 31 are arranged on the circumferential surface of the shaft 33 while being displaced by 90 ° in the circumferential direction, and the tooth members 20 are sequentially vibrated, that is, the phase difference of the vibration is generated between the tooth members 20. Since it is provided, there is no possibility that the entire bucket body 10 resonates.

Furthermore, since the shaft 33 is rotationally driven by the hydraulic motor 34, it is possible to set the vibration frequency according to the ground to be excavated.

The bucket of the present invention is not limited to the bucket shown in the above embodiment. For example, the number of teeth members and protrusions is set according to the size of the bucket body. An electric motor may be used instead of the hydraulic motor. The point is that it is sufficient to vibrate only the tooth members arranged in parallel at the tip of the bucket body.

[0029]

[Effect of the device]

 As described above, the bucket of the hydraulic excavator or the like of the present invention does not require a large driving force when excavating during excavation, has high energy efficiency, and the excitation energy is not consumed by the vibration of the vehicle. Does not deteriorate the habitability of the cab.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an embodiment of a bucket such as a hydraulic excavator according to the present invention.

FIG. 2 is a front view showing a cross section of the same portion.

FIG. 3 is a side view showing a conventional hydraulic excavator.

[Explanation of symbols]

 10 Bucket Main Body 14 Space Section 20 Teeth Member 21 Base End (Teeth Mounting Plate) 22 Teeth 30 Vibrating Means 31 Projection 33 Shaft 34 Motor (Hydraulic Motor)

Claims (4)

[Scope of utility model registration request] 1. A base end portion of a plurality of tooth members arranged in parallel with the tip end portion of the bucket body is swingably attached to the tip end portion of the bucket body, and is on the tip end side of the bucket body. A hydraulic excavator is provided at a position near the base end portions of the plurality of tooth members, and vibrating means is arranged to strike the base end portions of the tooth members to vibrate the front end sides of the plurality of tooth members. Etc buckets. 2. The bucket for a hydraulic excavator or the like according to claim 1, wherein the vibrating means is arranged in a space provided at the bottom of the tip of the bucket body. 3. A vibrating means, wherein a plurality of protrusions for hitting the base end portions of the plurality of tooth members are arranged on the peripheral surface, and a shaft rotatably mounted in the space portion, and the shaft. The bucket for a hydraulic excavator or the like according to claim 2, wherein the bucket comprises a motor that is rotationally driven. 4. The plurality of protrusions are arranged on the circumferential surface of the shaft so as to be out of phase with each other so that the base ends of the plurality of teeth members are sequentially hit with the rotation of the shaft. A bucket for a hydraulic excavator or the like according to claim 3.