JPH01312124A - Filling back device for backhoe - Google Patents

Abstract

PURPOSE:To make filling back of a ditch after excavation executed easily and efficiently by detaching a bucket attached to the tip of a backhoe arm and by installing, instead of the detached one, driven members for the filling back of an angle shape in ichnographical view. CONSTITUTION:A bucket, detachably installed to the tip of an arm 23 of a backhoe, is detached when a work is to be done for filling back a ditch with excavated earth and sand. Then, a supporting frame 51 is installed to the tip of the arm 23 and a pair of driven members 52 for filling back in an angle shape in ichnographical view is fixed thereto. With the driven members being moved forward, earth and sand A on the ground are moved slowly and are put together at the center, being collected from both sides of left and right, and the ditch B is filled back thereby.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a backfilling device for a backhoe, which can be used by being attached to the tip of an arm in place of a bucket.

(Prior Art) When a trench is excavated with a hack hoe, it is necessary to return earth and sand that has been dumped onto the ground on both sides of the trench to backfill the trench. However, conventional hackhoes were not equipped with equipment for backfilling after excavation.

(Problem to be solved by the invention) Therefore, in the past, a work method was generally adopted in which the side of the bucket was used to move the earth and sand laterally with the bucket while swinging the boom from side to side. Not only does it require a high level of skill, it also has the disadvantage of poor work efficiency.

In view of such conventional problems, the present invention provides a backfilling device that is attached to an arm instead of a bucket, thereby allowing backfilling work to be performed easily and efficiently.

(Means for Solving the Problems) As a means for solving the problem, the present invention provides a backhoe including a bucket 25 that is detachably attached to the tip of the arm 23, in which a bucket 25 is detachably attached to the tip of the arm 23 instead of the bucket 25. A support frame 51 is attached, and a pair of left and right drive type backfilling tools 52 are provided on the support frame 51 in an eight-figure shape in plan view so as to move the earth and sand A on the ground from both left and right sides to the center.

(Function) When backfilling trench B, move bucket 25 to arm 2.
3, and in place of this, a backfilling device W50 is attached to the tip of the arm 23. Then, when this backfilling device 50 is returned to the ground and moved with the pair of right and left backfilling tools 52 being driven, the backfilling tools 52 move into the earth and sand on the ground on both sides of the trench 8 on the central aB side. without backfilling trench B with this soil A.

(Example) Hereinafter, the present invention will be described in detail with reference to the illustrated example.
In the figure, reference numeral 1 denotes a tractor body, which includes an engine 2, a transmission case 3, etc., and has front wheels 4 and rear wheels 5.

6 is the hood, 7 is the driver's seat, and 8 is the steering wheel.

9 is a front loader mounted on the front part of the tractor body 1, and includes a pair of left and right masts 10, a pair of left and right places 11 protruding forward from each mast 10, and a pair of left and right booms pivotally attached to the upper end of each mast 10. 12. A pair of left and right boom cylinders 13 for raising and lowering each boom I2, boom 1
2, a pair of left and right bucket cylinders 15 for rotating the bucket 14, and the like. Each mast 10 is detachably attached to a mast mount 16 on one side of the tractor body, and the front end of each place 11 is detachably attached to a front axle frame 17 projecting forward from both sides of the engine 2.

On the 1st, a backhoe is attached to the rear of the tractor body I, and a machine frame 19 is attached to the tractor body 1, a swing frame 20 is pivoted to the machine frame 19 so as to be able to swing left and right around a vertical axis, and A boom 21 pivotally attached to the frame 20, a boom cylinder 22 for raising and lowering the boom 21, an arm 23 pivotally attached to the tip of the boom 21, an arm cylinder 24 for bending and extending the arm 23, a pivot at the tip of the arm 23. It consists of a bucket 25 attached thereto, a bucket cylinder 26 for rotating the bucket 25, a control box 27 mounted on the machine frame 19, a driver's seat 28, and the like.

A pair of left and right outriggers 29 are installed on both the left and right sides of the machine frame 19.
is provided. As shown in FIGS. 4 and 5, the outrigger 29 is composed of a rigger arm 31 having a ground plate 30 at its tip, and a rigger cylinder 32 for moving the arm up and down. Rigger arm 31 is machine frame 1
9, a rectangular cylindrical arm body 34 pivotably supported by a pin 33 at the lower end of the arm body 9, and a rectangular cylindrical sliding arm 35 inserted into the arm body 34 so as to be slidable in the longitudinal direction. It is configured to be extendable and retractable by a lock pin 38 that can be inserted into and removed from a bottle hole 36 formed in the arm body 34 and a bottle hole 37 formed in the sliding arm 35. Note that a plurality of bottle holes 37 are formed in the sliding arm 35.

The cylinder body 39 of the rigger cylinder 32 is pivotally supported to the machine frame 19 by a pin 40, and the piston rod 41 is pivotally connected to the bracket E 42 of the sliding arm 35 by a pin 43. Therefore, by expanding and contracting this rigger cylinder 39, it is possible to move the rigger arm 31 up and down around the pin 33, and by removing the lock pin 38, the sliding arm 35 can be moved longitudinally with respect to the arm body 34. It is also possible to make it slide. Therefore, when working on a slope, the vehicle body 1 can be supported in a horizontal state by adjusting the lengths of the left and right rigger arms 31 as shown in FIG.

The bucket 25 at the tip of the arm 23 is removably pivoted to the arm 23 by a pin shaft 44 that can be freely inserted and removed, and can be rotated by the bucket cylinder 26 via links 45 and 46. In addition, the link 45 is the pin 47
The links 46 are respectively pivotally supported on the arm 23 and the bucket 25 by insertable/removable pins 48, and both links 45, 46
is connected to the bucket cylinder 26 by a pin 49.

As shown in FIGS. 1 and 2, a backfilling device 50 is detachably attached to the tip of the arm 23 in place of the bucket 25. This backfilling device 50 includes a support frame 51,
It also includes a pair of left and right drive-type backfilling tools 52 that are provided in an eight-shape shape when viewed from above.

The support frame 51 is provided with a pair of left and right attachment parts 53 and 54 on the front and back, the attachment parts 53 being attached to the arm 23 with a pin 44 for the bucket 25, and the attachment part 54 being attached to the link 46 with a pin 48, respectively. Each backfilling tool 52 includes a bulging plate 55 projecting outward from the support frame 51, a screw auger 57 supported by a side plate 56 at the outer end of the bulging plate 55 in parallel with the bulging plate 55, and a screw auger 57 for driving the auger 57. The auger 57 has a hydraulic motor 58 attached to a side plate 56 to move the earth and sand from both left and right sides toward the central groove B by rotating the auger 57.

After excavating trench B with hackhoe 18, when not backfilling with soil A discharged on both sides, instead of using bucket 25,
As shown in FIG. 1, the backfilling device 50 is attached to the tip of the arm 23. At this time, replacement can be easily performed by inserting and removing the pins 44 and 48.

After the backfilling device 50 is installed, the backfilling device 50 is attached to the pin 4 by expanding and contracting the bucket cylinder 26 so that the lower end of the groin board 55 can touch the ground parallel to the ground.
Adjust the angle by rotating it 4 times.

Next, with the auger 57 rotated in a predetermined direction by the hydraulic motor 58, the backfilling device 50 is lowered and moved in the direction of arrow C in FIG. It can be moved along the plate 55 toward the groove B side in the direction of arrow D in FIG. 2, and backfilling can be easily and efficiently performed. Furthermore, since the ground is scraped with the earth-filling board 55, the finish after backfilling is also good.

As shown in FIG. 6, the backfill tool 52 is pivoted to the bracket 59 of the support frame 51 so as to be rotatable around the vertical axis 60, and the angle can be freely adjusted around the vertical axis 60 by inserting and removing the pin 61. It's okay. The bracket 59 has a plurality of via holes 62 formed on the circumference around the vertical axis 60, and the pin 61 is inserted into any of the via holes 62 from the bracket 63 side of the backfilling tool 52. It is supposed to be done.

The backfilling tool 52 is not limited to the auger 2, but may be, for example, a chain running in the left-right direction and provided with earth-filling plates at predetermined intervals.

(Effects of the Invention) According to the present invention, the support frame 51 is detachably attached to the tip of the arm 23 in place of the bucket 25, and the support frame 51
In addition, a pair of drive-type backfill tools 52 on the left and right sides are provided in an 8-shape in plan view so that the soil A on the ground is brought to the center from both the left and right sides, so that the work of pushing back the trench after excavation can be done easily and efficiently. can be done. Moreover, since the backfilling tool 52 can be mounted on the arm 23 instead of the bucket 25, it is economical and easy to handle.

[Brief explanation of the drawing]

Figures 1 to 5 illustrate one embodiment of the present invention, in which Figure 1 is a perspective view of a backfilling device, the second cabinet is a partially cutaway plan view of the same, and Figure 3 is a backhoe equipped with a backhoe. FIG. 4 is a side view of the tractor, FIG. 4 is a perspective view of the outriggers, FIG. 5 is a rear view of the vehicle in a supported state, and FIG. 6 is a plan view showing another embodiment. 18-backhoe, 23-arm, 25-bucket, 5
0-backfilling device, 51-support frame, 52-backfilling tool, 55
Soil board, 57 auger, 60-vertical axis, A-earth and sand, B
- Groove. Patent applicant: Kubota Iron Works Co., Ltd. Representative: Patent attorney Yasu 1) Toshio Figure 1

Claims (2)

[Claims] (1) In a backhoe comprising a bucket 25 removably attached to the tip of the arm 23, a support frame 51 is detachably attached to the tip of the arm 23 in place of the bucket 25;
This backhoe backfilling device for a backhoe is characterized in that this support frame 51 is provided with a pair of left and right drive type backfilling tools 52 in an eight-shape shape in plan view so as to move earth and sand A on the ground from both left and right sides to the center. (2) The backhoe backfilling device according to claim 1, further comprising a pair of left and right drive type backfilling tools 52 whose angle can be freely adjusted around the vertical axis 60 with respect to the support frame 51.