JP2534316Y2 - All-turn type backhoe - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure near a control section of a swivel base in an all-slewing backhoe.

[0002]

2. Description of the Related Art In particular, many small-sized all-turn type backhoes have a steering section disposed at the center of the turntable on the left and right sides, and a backhoe device (boom base) is connected to the front end of the turntable. In recent years, the control section and the backhoe device (base of the boom) have been arranged side by side on the swivel base, so that the boom is in a substantially upright state and the arm is operated toward the front side, thereby turning the swivel base in a small range. An all-turn type backhoe configured to cause the rotation has been proposed.

[0003]

As described above, when the control section and the backhoe device (base of the boom) are arranged side by side on the swivel base, when the boom is substantially upright and the arm is operated to the front side, Since the bucket at the tip of the arm is located on the upper side of the control unit, soil spilled from the bucket may enter the control unit side.

[0004] In this case, it is conceivable that the control section may be covered in a substantially closed room shape by a cabin. In particular, in the case of a small all-turn type backhoe, the space of the turntable is small. This cabin is also small, giving a sense of oppression to the driver in the cabin. In addition, in the case of a small all-turn type backhoe that often performs work in a narrow city area, if a cabin is provided on the turntable, the field of view particularly near the ground near the all-turn type backhoe itself becomes narrow. The present invention relates to an all-turn type backhoe in which a steering section and a backhoe device (base of a boom) are arranged side by side on a swivel base, while soil spilled from a bucket is secured while ensuring comfort and visibility at the steering section. Its purpose is to prevent it from getting into your side.

[0005]

The feature of the present invention resides in the following configuration of the above all-turn type backhoe. In other words, the control unit and the backhoe device are arranged side by side on the swivel table, and a partition wall is provided between the control unit and the backhoe device to partition the control unit and the backhoe device. The roof is supported at the upper end of the partition wall in a cantilever manner, extends toward the control section side, and the rear part of the partition wall is inserted into the upper part of the driving part arranged at the rear part of the swivel base.

[0006]

According to the present invention, since the control section and the backhoe device are separated by a partition and a roof, when the boom is substantially upright and the arm is operated to the front side, the control section is not operated. Even if soil is spilled from the bucket located on the upper side, the soil will not be blocked by the partition walls and the roof and will not enter the control section side. And, since the rear part of the bulkhead enters into the upper part of the driving part arranged at the rear part of the swivel, the bulkhead becomes long from front to back from the front side to the rear side of the swivel, and the soil spilled from the bucket. Has a higher function of preventing the vehicle from entering the control section side.

[II] Even if such a partition wall and a roof are provided, the front and rear of the control unit and the lateral side of the control unit opposite to the backhoe device are open, so that the driver of the control unit may be pressed. There is no feeling. Then, the field of view at the time of work (particularly, the field of view near the ground near the all-turn type backhoe itself) is not obstructed for the driver of the control unit. In addition, since the see-through portion is formed on the partition wall that separates the control portion from the backhoe device, a lateral field of view from the control portion to the backhoe device side is secured, and the state of the backhoe device from the control portion can be easily determined. You can see it.

[0008]

[Effect of the Invention] As described above, in the all-turn type backhoe in which the control unit and the backhoe device are arranged side by side on the turntable, the soil spilled from the bucket while not giving a feeling of oppression to the driver of the control unit. Could be prevented from entering the control unit side, and comfort in the control unit could be improved. The visibility at the time of operation is secured by the front and rear of the control unit, the point that the lateral side opposite to the backhoe device in the control unit is open, and the point that the backhoe device side can be seen through the see-through part of the partition wall. Therefore, the workability is also sufficient.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIG. 5 shows the all-turn type backhoe according to the present invention. This all-turn type backhoe is a crawler traveling device 1
On a traveling machine base 2 provided with a turning table 3, a turning table 3 capable of turning all around a vertical axis is mounted. On the turning table 3, a control unit 4 and a backhoe device 5 are arranged side by side. The driving unit 6 is mounted.

The backhoe device 5 includes a boom 8 connected to a bracket 7 erected from the swivel table 3 so as to be able to swing up and down around a horizontal axis near the center of rotation, and an arm pivotally connected to a tip end of the boom 8. 9, a bucket 10 pivotally connected to the distal end of the arm 9;
The bucket 10 is swingably driven by a boom cylinder C1, an arm cylinder C2, and a bucket cylinder C3. As shown in FIGS. 5 and 6, the backhoe device 5 is configured so that the bucket 10 at the tip thereof can be folded and stored in a state in which the bucket 10 enters the turning center side in plan view from the outer peripheral portion of the turning table 3.

That is, as shown in FIGS. 5 and 6, the boom 8 is divided into a base end portion 8a, an intermediate portion 8b and a distal end portion 8c, and the intermediate portion 8b and the distal end portion 8c are vertically extended substantially at right angles to the extending direction. Are connected so as to be relatively swingable around the orientation axes P1 and P2,
The connecting portion of the intermediate portion 8b forms a parallel quadruple link mechanism. Thus, while the base end portion 8a and the front end portion 8c are maintained in a parallel posture, the intermediate portion 8b is swung by the offset cylinder C4, thereby offsetting the front end portion 8c and the bucket 10 to the left and right as shown in FIG. It is configured to be movable. Then, by offsetting the bucket 10 to the opposite side of the control unit 4 and folding and swinging the boom 8 and the arm 9, the backhoe device 5 can be stored inside the swivel 3 as described above. Make up.

As described above, the bucket 10 is moved to the swivel 3
, The soil loaded at the time of entry may fall from the bucket 10 to the connecting portion (base portion) of the boom 8. In this case, as shown in FIGS. 1, 5, and 6, a downflow plate 11 wider than the bucket 10 is provided at a portion of the boom 8 on the opposite side of the control unit 4, and the lower end of the downflow plate 11 is provided with an airframe. A rubber droop 13 that can bend in contact with the side hood 12 is provided.

As shown in FIGS. 1, 5, and 6, between the backhoe device 5 and the control unit 4, a protective partition 14 for partitioning the backhoe device 5 and the control unit 4 is erected. A see-through window 15 through which the operator can view the backhoe 5 is inserted into the partition wall 14.
(Corresponding to a see-through portion). As shown in FIG. 1, a roof 14 c is supported at the upper end of the partition wall 14 in a cantilever manner, and
Extending to the side.

As shown in FIGS. 1 and 2, a protective cover 16 for receiving dirt falling from the stored bucket 10 and flowing down diagonally downwardly from the boom cylinder C1 is provided on the outer side of the boom cylinder C1. This prevents soil from falling on the cylinder rod 17 of the boom cylinder C1. A protective cover 16 is bolted to a boss 17a for connection with the boom 8 at the tip of the cylinder rod 17, and interlocks with the expansion and contraction of the boom cylinder C1 as shown in FIGS. It is configured to be.

A bent portion 16a parallel to the partition wall 14 is formed at a position below the protective cover 16 on the control section 4 side to prevent the spilled soil from directly hitting the see-through window 15. On the cylinder body 18 side of the boom cylinder C1, a guide member 19 which is connected to the bent portion 16a when extended to perform a preventive action is provided in a state where the protection cover 16 is allowed to slide.

As shown in FIGS. 1 and 2, the protective cover 1
An elastic resin sheet 20 made of a rubber material or the like that scrapes off the soil attached to the see-through window 15 due to the swinging operation of the boom 8 is provided on the edge of the guide member 19 on the control section 4 side. As described above, the situation in which the soil spilled from the bucket 10 falls and intrudes from between the backhoe device 5 and the partition wall 14 and accumulates on the connecting portion (base portion) of the boom 8 and the hydraulic piping portion to cause damage is reduced. Meanwhile, the configuration is such that the see-through window 15 is cleaned.

In the claims of the utility model registration, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration of the attached drawings by the entry.

[Brief description of the drawings]

FIG. 1 is a front view of a protection cover and a partition wall of a boom cylinder and a vicinity of a control unit.

FIG. 2 is a perspective view showing the vicinity of a protection cover of the boom cylinder.

FIG. 3 is a side view showing the vicinity of a protection cover of a boom cylinder in a state where the boom is raised.

FIG. 4 is a side view showing the vicinity of a protection cover of a boom cylinder in a state where the boom is lowered.

FIG. 5 is an overall side view of the all-turn type backhoe.

FIG. 6 is an overall plan view of an all-turn type backhoe.

[Explanation of symbols]

 DESCRIPTION OF REFERENCE NUMERALS 3 Turning table 4 Control unit 5 Backhoe device 6 Drive unit 14 Partition wall 14c Roof 15 Partition wall see-through unit

Claims (1)

(57) [Scope of request for utility model registration] 1. A control unit (4) and a backhoe device (5) are arranged side by side on a swivel (3), and the control unit (5) is provided between the control unit (4) and the backhoe device (5). Partition wall (14) that separates 4) from backhoe device (5)
The partition (14) is provided with a see-through portion (15) through which the backhoe device (5) can be seen.
A roof (14c) is supported at the upper end of 4) in a cantilever shape, extends toward the control section (4), and at the top of a driving section (6) arranged at the rear of the swivel (3), The partition (1)
4) All-turn type backhoe with the rear part inserted.