JPH10176341A - Backhoe attachment - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a backhoe attachment that can be multifunctionalized by having a backhoe having not only a digging and leveling function but also a cultivation function, and that can strongly perform tilling work. . SOLUTION: A rotary tilling device 28 is attached to a tip of a final boom 15 of a backhoe B so as to be exchangeable with an excavator 45, and a base of the rotary tilling device 28 is attached to a tip of the final boom 15 so as to swing freely. A body frame 29, a rotary tilling claw 33 rotatably attached to the tip of the body frame 29, and a rotary motor 35 attached to the body frame 29 and rotating the rotary cultivation claw 33
And

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an attachment for a backhoe mounted on a backhoe capable of performing not only excavation work but also tilling work.

[0002]

2. Description of the Related Art Conventionally, as a ground working machine used for excavation and leveling work, a backhoe in which a plurality of articulated booms are mounted on a traveling trolley or a crawler and an excavation shovel is attached to the end of the final boom. It is heavily used. Such a backhoe can excavate the ground surface or level the ground by freely bending a plurality of booms.

[0003]

However, the above-described backhoe for excavation and leveling still has the following problems to be solved. That is, the above-mentioned backhoe is exclusively used for only the above-mentioned excavation and leveling work, and its use is limited. On the other hand, a rotary tillage device is used in soil crushing work in a field such as a field or a field. Although the rotary tilling device is mounted on the rear of the tractor using a three-point hitch, etc., the output of the tractor is limited, so that a sufficient driving force is provided through a PTO shaft (power take-out shaft) or the like. In some fields, and sufficient tilling was not possible in some fields.

[0004] The present invention has been made in view of such circumstances, and by providing the backhoe with not only the excavation and leveling functions but also the tilling function, it is possible to increase the number of functions and to make the tilling work more powerful. It is intended to provide a backhoe attachment that can be performed.

[0005]

According to the present invention, there is provided a semiconductor device comprising:
The attachment of the backhoe described above, a rotary tilling device is attached to the tip of the final boom of the backhoe so as to be replaceable with an excavator, and the rotary tilling device has a base that is swingably attached to the tip of the final boom. A frame, a rotary till that is rotatably attached to the tip of the main frame, and a rotary motor that is attached to the main frame and rotates the rotary till.

According to a second aspect of the present invention, there is provided the backhoe attachment according to the first aspect, wherein the rotary motor is constituted by a hydraulic motor, and is operated by a hydraulic oil from a hydraulic control unit used for driving the boom of the backhoe. Driven.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the accompanying drawings to provide an understanding of the present invention. First, a configuration of a backhoe B equipped with a backhoe attachment A according to an embodiment of the present invention will be described with reference to FIG.

As shown in the figure, on a crawler-type traveling vehicle 11 that can travel on a field 10, together with an operating cabin 12,
The swivel table 13 is mounted so as to be able to swivel 360 °. On the turntable 13, a bending boom 16 including a first boom 14 and a second boom 15, which is an example of a final boom, is mounted. The base of the first boom 14 is the first
Of the second boom 15 is pivotably connected to the tip of the first boom 14 by a second hydraulic cylinder 18 in a vertical direction. It is pivotally connected freely. And
Attachment A of the backhoe is attached to the front end of the second boom 15.

Next, the structure of the attachment A of the backhoe will be specifically described with reference to FIGS. As shown in the drawing, one end of a base of a pair of rotary mounting brackets 19 is pivotally connected to both sides of the tip of the second boom 15 by a pivot 20 so as to swing freely. A pair of swing links 21 are disposed behind the rotary mounting brackets 19 at parallel intervals, and one end of the swing link 21 is located at a position away from the tip of the second boom 15 by a predetermined distance. It is pivotally connected by a pivot 22. On the other hand, the other end of the swing link 21 is pivotally connected by a pivot 25 to a rear part of a pair of connection links 24 whose front ends are pivotally connected by a pivot 23 to the other end of the rotary mounting bracket 19.

Therefore, the rotary mounting bracket 19,
Second boom 15, swing link 21, connecting link 24
Thus, a four-bar parallel link mechanism using the second boom 15 as a fixed link is formed. Axis 25
As shown in FIG. 1, the tip of a telescopic rod 27 of a third hydraulic cylinder 26 attached to the second boom 15 is pivotally connected.

With this configuration, by driving the third hydraulic cylinder 26, the rotary mounting bracket 19 and a rotary tilling device to be described later that are integrally mounted on the rotary mounting bracket 19 via the above-described four-bar parallel link mechanism. 28 can be swung around pivot 20. As shown in FIGS. 2 and 3, a rotary tilling device 28 is integrally attached to the rotary mounting bracket 19, and is similarly swingable around the pivot 20.

That is, the main body frame 29 of the rotary tilling device 28 is composed of a pair of side plates 30 which are arranged at parallel intervals in the width direction and extend in the front-rear direction, and a cylindrical body provided between the bases of the side plates 30. The rear surface of the central portion of the connecting tube 31 is fixed to the front portion of the rotary mounting bracket 19. A rotary rotary shaft 32 is rotatably mounted between the end portions of the side plates 30, and a large number of rotary plows 33 are provided on the outer peripheral surface of the rotary rotary shaft 32.
They are fixed at regular intervals in the axial direction. here,
As the rotary tilling nail 33, an ordinary stuffing, a tanning, an L-shaped stuffing, a flower-shaped stuffing, a tomato stuffing, etc. can be used according to the properties of the soil in the field.

A motor mounting bracket 34 is connected to the base of one side plate 30 so as to extend rearward. A rotary motor 35 is fixed to the motor mounting bracket 34. The first output shaft 36 of the rotary motor 35
The first sprocket 37 is interlockingly connected to a second sprocket 40 fixed to an extension 39 extending outward from one end of the rotary shaft 32 through an endless chain 38 via an endless chain 38. Have been.

With such a configuration, by driving the rotary motor 35, the rotary rotary shaft 32 and a number of rotary plows 33 mounted on the rotary rotary shaft 32 can be rotated.

In the present embodiment, the rotation motor 35
The hydraulic oil is supplied to the rotary motor 35 by supplying one end of an oil supply pipe 41 and a return oil pipe 42 attached along the bending boom 16 to the rotary motor 35, as shown in FIGS. Inlet port 43 and outlet port 4 provided
4 and an oil supply pipe 41 and a return oil pipe 42.
Is connected to a hydraulic control unit (not shown) that supplies hydraulic oil to the first to third hydraulic cylinders 17, 18, 26, and the like.

As shown in FIGS. 4 and 5, there is shown a case in which an excavator 45 for excavation and leveling work is attached to the tip of the second boom 15 instead of the rotary tillage device 28 described above. As shown in the figure, the bases of a pair of shovel mounting brackets 48 are pivotally connected to the front end of the second boom 15 and the front end of the connection link 24 by pivots 46 and 47, respectively. A digging excavator 45 having a digging pawl 49 at the tip is provided at the tip of the shovel mounting bracket 48.
Are fixedly connected.

Next, the operation of the backhoe B provided with the backhoe attachment A having the above-described configuration will be described. When performing normal excavation and leveling work, see Fig. 4.
As shown in FIG. 5, the excavator 45 is attached to the second boom 15 and the tip of the connecting link 24 so as to swing freely.
Thereafter, at the site, the swivel base 13 and the first to third hydraulic cylinders 17, 18, and 26 are operated to excavate the ground to make holes or to level the ground.

When the backhoe B is used for tilling work in a field, first, the pivots 46 and 47 are removed, and the excavator 45 is removed from the leading end of the second boom 15 and the leading end of the connecting link 24. Next, as shown in FIGS. 2 and 3, the rotary mounting bracket 1 to which the rotary tillage device 28 has already been mounted by the pivots 20 and 23.
9 is connected to the front end of the second boom 15 and the front end of the connection link 24. Further, one end of the oil supply pipe 41 and one end of the return oil pipe 42
Each is connected to the inlet port 43 and the outlet port 44 of the rotary motor 35 in communication.

Thereafter, in the field, the hydraulic control unit is operated to supply hydraulic oil to the rotary motor 35 to rotate the rotary plow 33, and the swivel 13 and the
By operating the third hydraulic cylinders 17, 18, and 26, the rotary tilling claws 33 are rotated to enter the field until a predetermined plowing depth is reached, and then the crawler-type traveling cart 11 is run to cultivate the field. can do.

At this time, since high-pressure hydraulic oil is supplied to the rotary motor 35 from the hydraulic control unit of the backhoe B, the rotary tilling claw 33 can be rotated strongly, and strong tilling can be performed. . Further, since the rotation of the rotary motor 35 can be controlled steplessly by the hydraulic control unit, it is possible to perform tilling according to the soil of the field. As described above, in the present embodiment, the backhoe B is provided with not only the excavation and leveling functions but also the cultivation function, so that the backhoe B can be multifunctionalized, and the cultivation work is performed strongly and in accordance with the soil characteristics of the field. be able to.

As described above, the present invention has been described with reference to one embodiment. However, the present invention is not limited to the configuration described in the above embodiment, but is described in the claims. It also includes other embodiments and modifications that can be considered within the scope of the matters described. For example, in the rotary tilling apparatus according to the above-described embodiment, the side drive system in which the transmission of the rotational force to the rotary shaft is supplied from one end of the rotary shaft, but the transmission of the torque to the rotary shaft is performed. From the center of the rotary shaft. Further, in the above-described embodiment, a hydraulic motor is used as the rotation motor, but an electric motor, an engine (internal combustion engine), or the like may be used instead of the hydraulic motor.

[0022]

In the backhoe attachment according to the first and second aspects, a rotary tilling device is mounted at the tip of the last boom of the backhoe so as to be replaceable with an excavator, and the base of the rotary tilling device is the tip of the last boom. A body frame is attached to the main body frame so as to swing freely, a rotary plow is rotatably attached to the tip of the body frame, and a rotary motor is attached to the body frame and rotates the rotary plow.

Therefore, during normal operation, the excavator is mounted on the excavator at the end of the last boom of the backhoe.
In addition to being able to perform leveling work, during tilling work,
By removing the excavator and attaching the rotary tilling device, the tilling operation can be easily performed, and the multifunction of the backhoe can be achieved.

[0024] In particular, in the backhoe attachment according to the second aspect, the rotary motor is constituted by a hydraulic motor, and is driven by hydraulic oil from a hydraulic control unit used for driving the boom of the backhoe. As described above, since high-pressure hydraulic oil can be supplied from the hydraulic control unit of the backhoe, the rotary plow can be rotated strongly, and strong plowing can be performed.
Further, since the rotation of the rotary motor can be controlled steplessly by the hydraulic control unit, it is possible to perform tilling according to the soil quality of the field.

[Brief description of the drawings]

FIG. 1 is a side view of a backhoe equipped with a backhoe attachment according to one embodiment of the present invention.

FIG. 2 is an enlarged side view of the same.

FIG. 3 is a view as seen from an arrow II in FIG. 2;

FIG. 4 is an enlarged side view in which an excavator is mounted in place of the rotary plow.

FIG. 5 is a view taken in the direction of arrows II-II in FIG. 4;

[Explanation of symbols]

A Backhoe Attachment B Backhoe 10 Field 11 Crawler-type traveling trolley 12 Operating cabin 13 Turning table 14 First boom 15 Second boom (final boom) 16 Bending boom 17 First hydraulic cylinder 18 Second hydraulic cylinder 19 Rotary mounting bracket DESCRIPTION OF SYMBOLS 20 Axis 21 Swing link 22 Axis 23 Axis 24 Connecting link 25 Axis 26 Third hydraulic cylinder 27 Telescopic rod 28 Rotary tilling device 29 Body frame 30 Side plate 31 Connecting tube 32 Rotary rotary shaft 33 Rotary tilling 34 Motor mounting bracket 35 Rotation Motor 36 Output shaft 37 First sprocket 38 Endless chain 39 Extension 40 Second sprocket 41 Oil supply pipe 42 Return oil pipe 43 Inlet port 44 Outlet port 45 Drilling shovel 46 Axis 47 Axis 48 Show Le mounting bracket 49 drilling claw

Claims (2)

[Claims] A rotary tilling device is attached to a tip of a final boom of a backhoe so as to be exchangeable with an excavator, and the rotary tilling device has a base frame whose base is attached to a tip of the final boom so as to swing freely. An attachment for a backhoe, comprising: a rotary tilling claw rotatably attached to a front end of the main body frame; and a rotary motor attached to the main body frame and rotating the rotary tilling claw. 2. The backhoe attachment according to claim 1, wherein said rotary motor is constituted by a hydraulic motor, and is driven by hydraulic oil from a hydraulic control unit used for boom drive of said backhoe.