JP2537656Y2 - Attachment vibration generator - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device which is interposed between a construction machine such as a power shovel and a backhoe and an attachment such as a bucket mounted on the construction machine and vibrates the attachment.

[0002]

2. Description of the Related Art As a kind of bucket which is one of attachments attached to construction machines, a sieve-like mesh is formed in a portion for storing scooped rubble and earth and sand, and the attachment is vibrated to vibrate. Among them, there are buckets that are configured to sieve sediment and small rubble.

FIG. 5 shows a bucket having a mesh.

A mesh portion 51 composed of a number of openings is formed in the bucket body 50. When the bucket body 50 is mounted on the construction machine main body by the bracket 52 and used, the hydraulic cylinder on the construction machine side is operated. Swing the bucket to sieve small particles such as gravel and sand. The bucket swings when an operator operates a hydraulic switching device of a construction machine such as a lever. However, since at least one operation is required for each swing, the bucket is hydraulically operated by the end of sieving. The switching operation must be performed many times. Therefore, the operator is significantly fatigued and the hydraulic switching device is often damaged.

[0005]

SUMMARY OF THE INVENTION In view of the above, there have been provided several types of devices such as a bucket provided with a swing (vibration) mechanism on the attachment side.

For example, (1) a construction in which an arm on a construction machine is rotated around an axial center thereof and sieved mainly by the rotational force of an attachment (Japanese Utility Model Application Laid-Open No.
No. 146558),

(2) A configuration in which vibration generated by a vibrator having a weight attached to an eccentric position is amplified by an elastic body such as rubber (Japanese Utility Model Application Laid-Open No. 63-190347).

(3) A system in which the rotational motion is changed into vibration by using a crank mechanism or the like
190346, and Japanese Utility Model Application Laid-Open No. 63-293229).

Among the above prior arts, (1) Japanese Utility Model Application Laid-Open No. 61
The configuration of 146558 requires a large amount of driving energy to rotate a bucket containing a large amount of rubble, earth and sand. In addition, the actual opening of (2) 63-190347
Although the structure of No. 1 can be expected to have relatively good vibration and a good sieving effect accompanying it, it is expected that the rubber spring as an elastic body will deteriorate over time. (3) Actual opening 63-
In the configurations of 190346 and 63-293229, vibration is generated by converting rotational force into reciprocating motion using a crank mechanism. This method has the advantages that the frequency can be easily adjusted by controlling the rotational force, the vibration mechanism changes little over time, and the life of the device is long.

[0010] However, the construction of the above (3) solid open 63-1
The configuration of No. 90346 has a configuration in which a plurality of crank mechanisms are provided and each of the crank mechanisms is connected by a connecting link, so that relatively good vibration can be obtained, but the configuration of the apparatus becomes complicated. Another problem is that a bucket rod that swings the bucket when scooping and discharging earth and sand is connected to the crankshaft. That is, when moving a bucket containing earth and sand, it is necessary to keep the bucket horizontal so that the earth and sand will not spill, but depending on the stop position of the crankshaft, a rotating moment is generated on the crankshaft due to the weight of the bucket, Even if the bucket rod is stopped to hold the bucket in a predetermined posture, a situation is expected in which the crankshaft rotates without permission, the bucket tilts, or stress is generated in a driving device such as an electric motor.
Further, Japanese Utility Model Application Laid-Open No. 63-293229 discloses the Japanese Utility Model Application No.
The basic configuration is the same as that of No. 90346, and a similar situation is expected to occur.

Furthermore, by forming two sieves and preventing the vibration operations of the two sieves from being synchronized with each other, the vibrations are offset as a whole, and the vibration applied to the object to be mounted on the construction machine or the like is reduced. There is also a proposal to reduce the power consumption (Japanese Utility Model Application Laid-Open No. 61-68468), but the configuration of course must be more complicated.

Further, in the conventional apparatus, since the vibration generating mechanism is fixedly incorporated in the attachment such as the bucket, the vibration generating mechanism must be incorporated for each attachment to be used, so that the price of the apparatus is inevitably increased. I can't get it.
Incidentally, the vibration mechanism is not always used even in the bucket which is the attachment requiring the vibration operation most, and the vibration mechanism may not be required at all depending on the working form. Therefore, the conventional configuration incorporating a vibration generating mechanism for each attachment has a common disadvantage that it is extremely disadvantageous in economy.

[0013]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and has a connecting body connected to an attachment mounting object such as a construction machine;
A vibration generating mechanism is incorporated between a vibration body connected to the attachment and a device independent of any of the attachment mounting object and the attachment. The vibration generating mechanism includes a driving unit that generates a rotational force, A vibration mechanism is formed by a crank mechanism that converts rotational force into reciprocating motion. The vibration body is connected to the main body side by both the crank mechanism and the mutually rotatable pin connection mechanism. Connected with the body integrally,
A vibration generating device for an attachment, wherein an integrated vibration generating device is constituted by these respective members and mechanisms.

[0014]

The torque is transmitted to the crank mechanism by operating the drive unit, and the crank mechanism transmits the torque to the vibrating body as a reciprocating motion. By virtue of the operation of the crank mechanism, the vibrating body generates a swing (vibration) corresponding to the reciprocating motion of the crank around the pin as the other connecting body. Since an attachment such as a bucket is connected to the vibrating body, the vibration of the vibrating body is a vibration of the attachment, and the vibration causes the attachment such as the bucket to screen rubble and earth and sand that have been scooped up.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below with reference to the drawings.

FIGS. 1 and 2 show a first embodiment,
The vibration generator has a configuration independent of the bucket 50 as an attachment.

The vibration generator is a bucket 5 to be vibrated.
0, a connecting body 2 directly connecting to an attachment mounting object such as a construction machine, and a vibrating body 1 interposed between the vibrating body 1 and the connecting body 2.
And the connecting body 2 are connected to each other to form a vibration generating mechanism that makes the whole an integrated device.

The connecting body 2 is an arm 3 of a construction machine.
And the bucket rod 4 connected to the cylinder rod 15 of the hydraulic cylinder on the construction machine side, by a pin 12 and a shaft 16. The vibration generating mechanism described later is provided so as to be interposed between the vibrating body 1 and the connecting body 2 so as to vibrate the bucket 50 as an attachment connected to the vibrating body 1.

Next, the configuration of the vibration generating mechanism will be described. Reference numeral 5 denotes a pair of rotating disks attached to both ends of a shaft 6 that passes through the opposite side walls of the connecting body 2, and one of the rotating disks (in the illustrated configuration, the right one of the rotating disks shown in FIG. 2). The rotating disk is a gear, and is engaged with the gear 7 of the rotary drive device 8 which is a hydraulic motor or an electric motor. Reference numeral 9 denotes a crank whose one end is connected to the eccentric position of both the rotary discs 5 by a pin 10 and the other end of which is connected to the vibrating body 1 by another pin 11, whereby the vibrating body 1 and the connecting body 2 Be integrated.

As shown in FIG. 1, the vibrating body 1 and the connecting body 2 are connected to each other via a pin 12 as shown in FIG. Thereby, both the vibrating body 1 and the connecting body 2 are integrally connected and configured, and the vibration generating device 13 is configured as a whole. The bucket 50 to be vibrated with respect to the vibration generating device 13 is configured such that the bracket 52 is
By being connected with 4a, 14b, it is connected and fixed to the vibration generator 13.

Next, the operation state of this device will be described.

When the bucket 50 is vibrated, the rotary driving device 8 is operated to rotate the rotary disk 5 via the gear 7 attached to the rotary driving device 8. As a result, the vibrating body 1 is rotated by the crankshafts 9 attached to the eccentric positions of the respective rotating disks 5 so that the vibrating body 1 is moved to the pins 12 such that the vibrating body 1 repeatedly approaches and separates from the body-side connection body 2 in response to the rotation of the rotating disks 5.
Swing around the center. This force is transmitted as vibration to the bucket 50 attached to the vibrating body 1. As a result, among the rubble, gravel, and the like, scooped out by the bucket 50, those having a small diameter fall off the mesh and are sieved.

The operation of the bucket 50 which is originally performed for scooping or discharging an object such as debris, that is, arbitrary change of the mounting angle of the bucket 50 with respect to the arm 3 on the construction machine main body side with respect to the arm 3 is conventionally performed. This is performed in the same manner as the bucket of Specifically, the expansion / contraction operation of the thin rod 15 on the construction machine body side is transmitted to the shaft 16 of the vibration generator 13 via the bucket rod 4, whereby the entire vibration generator 13 swings (rotates) about the pin 12. )
This is performed by changing the attitude of the bucket 50 attached to the device.

FIGS. 3 and 4 show a second embodiment of the present invention.

In this embodiment, the vibration generating mechanism is formed mainly on the vibrating body 1 side.

A shaft 20 is inserted through the vibrating body 1, and a gear 21 is attached to the shaft 20.
Reference numeral 22 denotes another gear engaged with the gear 20, which is driven to rotate by the same rotation driving device 8 as in the above embodiment. One end of a pair of first cranks 23 is connected to both ends of the shaft 20 through which the vibrating body 1 is inserted, and a pair of second cranks is connected to the other end of each of the first cranks 23 via pins 26. One ends of 24 are connected to each other.

The other end of each second crank 24 is connected to a pin 27
Is connected to the connection body 2 via the. The bucket rod 4 is connected to a shaft 16 fixedly inserted through the connecting body 2. The pin 12 is a pin serving as a swing center when swinging (vibrating) the vibrating body 1 with respect to the connection body 2. Sign 2
Reference numeral 5 denotes a pin for connecting the arm 3 on the construction machine body side to the connecting body 2.

In this configuration, when the rotary drive 8 is operated, its rotational force is transmitted to the shaft 20 via the gears 22 and 21, and the first crank 23 fixed at both ends thereof is rotated by the rotation of the shaft 2. It rotates around the shaft 20. The first crank 23 and the second crank 24 are connected to a pin 26
, The second crank 24 reciprocates by the rotation of the first crank. Due to the reciprocating motion of the second crank 24, the shaft 20 and the pin 27 move closer to or away from each other, and the vibrating body 1 and the bucket 50 connected thereto swing (vibrate) about the pin 12.

The rocking operation of the bucket 50 with respect to the arm 3 on the construction machine main body side at the time of scooping or discharging the object is performed in the same manner as in the first embodiment.

As shown in the above embodiment, the vibration generator of the present invention has a construction independent of the construction machine and the bucket as an attachment. For example, the vibration body 1 and the bucket 50 are integrated. Or by integrating the connecting body 2 with the arm of the construction machine, it is of course possible to configure the present vibration generator in advance on the attachment side or the construction machine side.

[0031]

According to the present invention, as described in detail in each of the embodiments, the vibration generating device is configured as a device independent of any of the attachment and the attachment mounting object such as the construction machine. Vibration generators can be mounted on different attachments and different objects to be mounted, making the device extremely versatile and significantly more economical than embedded devices.

Further, no modification or modification such as attachment of a special member is required for any of the attachments such as construction machines to which the present apparatus is to be attached and the attachments, and the apparatus is extremely effective in this respect. .

[Brief description of the drawings]

FIG. 1 shows a first embodiment of the present invention, and is a side view of a vibration generator interposed between an arm to be mounted and a bucket.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 shows a third embodiment of the present invention, and is a side view of a vibration generator interposed between an arm to be mounted and a bucket.

FIG. 4 is a sectional view taken along line BB of FIG. 3;

FIG. 5 is a perspective view of a bucket having a sieve portion.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vibration body 2 Connection body 3 (Construction machine side) Arm 5 Turntable 6 Rotation shaft 8 Rotation drive body 9 Crank 12 Pin 13 Vibration generator 20 Shaft 21, 22 Gear 23 First crank 24 Second crank 50 Bucket

Claims (5)

(57) [Scope of request for utility model registration] 1. A connection body that is configured to be detachable from an attachment to which an attachment such as a construction machine is attached, and a vibrator that is configured to be detachable from an attachment that is attached to the attachment, wherein the connection is performed. A vibration generating device for an attachment, wherein the body and the vibrating body are integrally formed via a vibration generating mechanism, and are configured independently for both the attachment target and the attachment. 2. The vibration generating mechanism includes: a pair of rotating disks that are rotated by a rotary driving device via a shaft attached to a connecting body; and a pair of cranks each having one end connected to an eccentric position of the rotating disks. And the other end of each crank is configured to be connected to a vibrating body.
A vibration generator for the attachment as described. 3. A pair of first cranks fixed to both ends of a rotating shaft provided on a vibrating body and rotated by a rotation driving device via the rotating shaft, the first vibration generating mechanism comprising:
The vibration generator for an attachment according to claim 1, further comprising a pair of second cranks each having one end connected to the crank, and the other end of the second crank being connected to a connecting member. 4. The vibration generating device for an attachment according to claim 2, wherein the rotation driving device of the vibration generating mechanism is a hydraulic motor. 5. The vibration generating device for an attachment according to claim 2, wherein the rotation driving device of the vibration generating mechanism is an electric motor.