JPH0414520Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to a bucket for construction machinery.

(Prior Art) A conventional hydraulic power shovel (construction machine) will be explained with reference to Figures 4, 5, 6, and 7.
is a lower traveling body, b is an upper rotating body rotatably mounted on the lower traveling body a, c is a boom mounted on the upper rotating body b so that it can be lifted up and down, and d is pivotally supported on the tip of the boom c. A bracket, e is an arm fixed to the same bracket d, f is a gripping mechanism, g is a boom cylinder, h is an arm cylinder, i is a bucket cylinder, and j in Fig. 7 is a bucket. Either one of the bucket f and the bucket i is detachably attached to the arm e and the tip of the bucket cylinder i via a pin 2. That is, in FIGS. 4 and 5 showing details of the gripping mechanism f, 1 is a bracket, 2 is a pin,
3 is a rotary joint, 4 is a swing bearing,
5 is a swing motor, 6 is an arm base, 7 is an arm, 7a and 7b are both ends of the arm 7, 35 is a pin that pivots the center part of the arm 7 to the arm base 6, and 18 is the tilt cylinder. The end of the tilt cylinder 18 is pivotally supported on the arm base 6 via a pin 21, and the piston rod of the tilt cylinder 18 is connected to the arm 7 via a pin 22.
is supported by. Further, 8 and 9 are elbows pivoted to both ends 7a and 7b of the arm 7 via pins 27 and 28, and 19 and 20 are grip cylinders,
The end of one grip cylinder 19 is pivoted to the upper end of the elbow 8 via a pin 23, the piston rod of the grip cylinder 19 is pivoted to the arm 7 via a pin 26, and the other grip cylinder 20 is pivoted to the upper end of the elbow 8 via a pin 23. is pivotally supported at the upper end of the elbow 9 via a pin 24, and the grip cylinder 2
A piston rod 0 is pivotally supported on the arm 7 via a pin 25. Further, 12 and 13 are hands pivoted to the lower ends of the elbows 19 and 20 via pins 31 and 32, and 14 and 15 and 16 and 17 are pads attached to the hands 12 and 13;
1 is an elbow link, the upper end of one elbow link 10 is pivoted to the right end 7a of the arm 7 via a pin 29, and the lower end of the elbow link 10 is pivoted to the hand 12 via a pin 33. The upper end of the other elbow link 11 is pivotally supported on the left end 7b of the arm 7, and the lower end of the elbow link 11 is pivotally supported on the hand 13 via the pin 34, and the right end of the arm 7 is supported. A parallel link mechanism is configured by the portion 7a side, the elbow 8, the elbow link 10, and the hand 12, and a parallel link mechanism is configured by the left end portion 7b side of the arm 7, the elbow 9, the elbow link 11, and the hand 13, Hand 12, 13
is capable of parallel movement, and tilt cylinder 1
8 in the telescopic direction to tilt the arm 7 in the vertical direction about the pin 35. Furthermore, the grip cylinders 19 and 20 are operated in the expansion and contraction directions to swing the parallel link mechanism about the pins 27 and 28, and move the hands 12 and 13 in parallel from the solid line position to the two-dot chain line position. , 13 to grip construction equipment, etc. When excavating earth and sand, etc., after removing the pin 2 and removing the gripping mechanism f from the tip of the arm e and the bucket cylinder i, the bucket j shown in FIG. It is designed to be detachably attached to the tip of the cylinder i.

(Problems to be solved by the invention) In the conventional hydraulic power shovel (construction machine) shown in FIGS. 4 to 7, when excavating earth and sand, the pin 2 is removed and the gripping mechanism f is After removing the arm e and the tip of the bucket cylinder i, the bucket j shown in FIG. 7 is detachably attached to the arm e and the tip of the bucket cylinder i using the pin 2. It takes a lot of time to exchange it with Baketto. Additionally, since workers had to approach the hydraulic power shovel to perform replacement work, there was a risk of an accident.

(Means for Solving the Problems) The present invention addresses the above-mentioned problems by providing a pair of brackets that protrude rearward in parallel from the back of the bucket main body to directly engage the gripping mechanism of the construction machine. The bucket belt for construction machinery is characterized by having mating grooves on each bracket facing left and right facing back to back. Eliminates the need to replace buckets. Another point is to provide a bucket for construction machinery whose structure can be simplified.

(Function) As described above, the bucket for the construction machine of the present invention has a bracket that is gripped by the gripping mechanism on the construction machine and protrudes rearward from the back of the bucket main body.
Since the bucket is gripped by the gripping mechanism attached to the construction machine, there is no need for a worker to approach the construction machine and replace the gripping mechanism and bucket.

(Example) Next, the bucket belt of the construction machine of the present invention will be explained with reference to an embodiment shown in FIGS. The brackets 38a, 38a projecting rearward are grooves provided in each bracket 38.

The bucket for the construction machine of the present invention is constructed as described above, and when working with the bucket 36, the hands 12 and 13 of the gripping mechanism f are brought relatively close to each other as shown in FIG. It fits into the groove 38a of the bracket 38 and holds each of the brackets 38. Furthermore, when performing work using the gripping mechanism f, the hands 12 and 13 of the gripping mechanism f are
are separated from the grooves 38a of each bracket 38, and the bucket bag 36 is opened.

(Effect of the invention) As mentioned above, the bucket for construction machinery of the present invention has a bracket that is gripped by the gripping mechanism on the construction machine and protrudes rearward from the back of the bucket main body.
Since the bucket is gripped by a gripping mechanism attached to the construction machine, there is no need for a worker to approach the construction machine and replace the gripping mechanism and bucket.

In addition, the gripping mechanism on the construction machine side directly grips the back-to-back left-facing grooves and right-facing grooves of a pair of brackets that protrude rearward in parallel from the back of the bucket main body, so the construction machine side can be held in place just like a conventional construction machine bucket. There is no need to provide a dedicated pin gripping mechanism for the bucket belt, and there is no need to attach pins to the bucket belt side so that the pin interval can be adjusted, which has the effect of simplifying the structure of the bucket trunk of the construction machine.

[Brief explanation of the drawing]

Fig. 1 is a plan view of the bucket as viewed from the direction of arrow B in Fig. 2, which shows an embodiment of the bucket for the construction machine according to the present invention; Fig. 1 is a side view of the bucket as seen from the direction of arrow A in Fig. 3; is a perspective view of the bucket tote, FIG. 3 is a side view showing the gripping state of the bucket tot by the gripping mechanism, FIG. 4 is a side view showing details of the gripping mechanism, and FIG. 5 is a side view showing details of the gripping mechanism. Side view,
FIG. 6 is a side view of a conventional construction machine, and FIG. 7 is a perspective view of a conventional bucket bag. f...Gripping mechanism on the construction machine side, 36...Bucket, 37...Bucket main body, 38, 38...Bracket.

Claims (1)

[Scope of utility model registration request] A construction machine characterized in that a pair of brackets are provided parallel to the rear from the back of the bucket main body, and grooves that directly engage with the gripping mechanism of the construction machine are provided in each bracket facing leftward and rightward back to back. Bucket.