JP2557530Y2 - Travel lever mounting structure for 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 traveling lever mounting structure provided on a front box type lever stand in a backhoe for excavating the ground.

[0002]

2. Description of the Related Art Conventionally, in a front box type lever stand often found in a small backhoe, a traveling lever is taken out from a rear side (operator side) of the stand, or between a control lever from an upper part of the stand. Many are standing upright.

For example, if the traveling lever is taken out from the rear side of the stand, two operation levers 68, 68 are respectively set upright on the upper surface of the lever stand 66, as shown in FIG. The two traveling levers 52, 52 are taken out from the lower portion of the rear side 66b of the lever stand 66, once protruded to the operator side and extended upward, and the grip portions 52b, 52b of the traveling levers 52, 52 are operated. The levers 68, 68 are disposed so as to be located near the grip portions 68a, 68a.

In FIG. 4, reference numeral 55 denotes a control section, 56 denotes a hood, 57 denotes a fulcrum for attaching a boom bracket, 58 denotes a boom bracket, 59 denotes a boom, 65 denotes a driver's seat, 67 denotes a step surface, and 75 denotes a lever. The stand cover 76 is a fuel cap.

[0005]

[Problems to be Solved by the Invention] However, the following problems remain in the mounting structure of the traveling levers 52, 52 described above.

That is, in FIG. 4, since the take-out portions 52a, 52a of the traveling levers 52, 52 are located at the lower portion of the rear side surface 66b of the lever stand 66, the feet for the operator become extremely squeezed, and Sometimes it was in the way.

In particular, when getting on and off while the engine is running,
If the running levers 52, 52 are caught with feet, the aircraft starts to move, which is extremely dangerous.

Further, the traveling levers 52, 52 are connected to a lever stand.
In the type standing upright from the upper part of the 66, it is necessary to provide boots or the like for preventing infiltration of rainwater or the like, so that the cost is increased.

In addition, since the boot requires a certain area to be arranged, the upper area of the lever stand 66 must be increased. As a result, the entire stand 66 is enlarged, and Was narrowed.

An object of the present invention is to provide a mounting structure of traveling levers 52, 52 which can solve the above-mentioned problems.

[0011]

According to the present invention, a lever stand is provided at a front portion of a driver's seat to form a control section, and an operation lever for operating a working section and a traveling operation of the aircraft are provided on the lever stand. The traveling lever is protruded from the front side of the lever stand toward the working part, and the intermediate part is extended in a state of being curved upward of the lever stand, and the traveling It is an object of the present invention to provide a traveling lever mounting structure in a backhoe, wherein a lever grip is disposed between operation levers.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be specifically described below with reference to the accompanying drawings.

FIG. 1 is an overall side view of a backhoe having a traveling lever mounting structure according to the present invention, FIG. 2 is a side view showing the traveling lever mounting structure, and FIG. 3 is a plan view of the same.

As shown in FIG. 1, the backhoe A has a semicircular revolving base 4 mounted on a center part of a crawler type traveling device 1 via a revolving bearing 3 on the revolving base 1, and is not shown on the revolving base 4. A bonnet 6 containing a motor and the like is provided.

A boom bracket mounting fulcrum 7 protrudes from a front portion of the swivel table 4, and the boom bracket 7 supports the boom 11 and the arm 10 for performing excavation work. Attach the bracket 8, attach the boom 9 to the bracket 8, and attach the arm 10 to the tip of the boom 9.
And the bucket 11 are connected so as to be able to move up and down and rotate freely.
Is composed.

A driver's seat 15 is provided substantially on the left side of the center of the swivel base 4, and a canopy support 19 is provided above the seat 15.
A canopy roof 19 is arranged via a.

A control section 5 is provided in front of the driver's seat 15, and a front box type lever stand 16 is protruded from the control section 5, and two operation levers 18, 18 are provided on the lever stand 16. And two traveling levers
2,2 are installed.

The traveling levers 2, 2 are connected to a traveling valve 21 disposed inside the swivel base 4 via a link mechanism.

A control valve (not shown) is mounted inside the lever stand 16. The control valve connects hydraulic piping to a boom cylinder 12, an arm cylinder 13, and a bucket cylinder 14 for operating the working part a. Connected through.

In FIG. 1, 17 is a step surface of the control unit 5, 10a is an intermediate arm, 13a is a cylinder for an intermediate arm,
25 is a protective cover of the lever stand 16, 26 is a fuel cap, 31 is a blade having an earth discharging operation and a stabilizer function, 32 is an operating cylinder for lifting and lowering the blade 31,
33 is a gripping rod.

The overall structure of the backhoe A in this embodiment is as described above, and the gist of the present invention is that, in the above structure, the traveling levers 2 and 2 are connected to the lever stand 16.
Projecting from the front side surface 16a to the working portion a side, and
Is extended in a state of being bent upwards of the lever stand 16, and the grips 2a, 2a of the traveling levers 2, 2 are operated by the operation levers.
It was arranged to be located between 18,18.

That is, as shown in FIGS. 2 and 3, a front side 16 of a lever stand 16 protruding forward of a driver's seat 15 is provided.
a (Working part a side) Take out the traveling levers 2, 2 connected to the traveling valve 21 from the upper part, and move the traveling levers 2, 2 to the working part a.
Side, and the middle part 2b is extended in a curved shape so as to be folded back to the operator side, and the grip 2 of the levers 2, 2 is provided.
a, 2a between the left and right operation levers 18, 18 standing on the upper surface of the lever stand 16, and the grip portions of the operation levers 18, 18
18a, it is arranged so as to be located in the vicinity of 18a.

With this configuration, it is possible to widen the feet of the operator, and even when the operator gets out of the driver's seat 15 to the outside of the aircraft, or gets on the same seat 15 from outside the aircraft, The traveling levers 2, 2 are not in the way.

Therefore, it is possible to prevent an accident such as an operator falling on the foot or falling down, and particularly, when the engine is operating, the traveling body is driven by the traveling levers 2, 2 being hooked on the feet. It is very safe without any danger.

Further, compared with the case where the traveling levers 2 and 2 are provided upright on the upper surface of the lever stand 16, a boot or the like for preventing rainwater from entering becomes unnecessary, and the cost can be reduced.

Further, a space for disposing the boots and the like is not required on the lever stand 16, so that the lever stand 16 can be downsized, and from this aspect, the foot of the operator can be widened. it can.

Also, the position of the grips 2a, 2a of the traveling levers 2, 2 can be located in the vicinity of the grip portions 18a, 18a of the operation levers 18, 18, and can be arranged almost unchanged from the conventional position. Therefore, it is easy for the operator to perform the driving operation, and there is no fear of an erroneous operation.

[0028]

According to the present invention, the traveling lever protrudes from the front side surface of the lever stand toward the working part, and the middle part extends in a state of being curved upward of the lever stand.
By arranging the grip of the traveling lever so as to be located between the operation levers, the foot space of the operator can be widened, and therefore, when the operator gets on or gets off the driver's seat, The running lever is not in the way, and there is no danger of catching a foot.

In particular, when the engine is operating, the danger of the body moving or the like can be prevented by hooking the foot on the traveling lever.

[Brief description of the drawings]

FIG. 1 is an overall side view of a backhoe having a traveling lever mounting structure according to the present invention.

FIG. 2 is a side view showing the traveling lever mounting structure.

FIG. 3 is a plan view showing the traveling lever mounting structure.

FIG. 4 is a side view showing a conventional traveling lever mounting structure.

[Explanation of symbols]

 a Excavation work section 2 Travel lever 2a Grip 5 Control section 15 Driver's seat 16 Lever stand 16a Front side

Claims (1)

(57) [Scope of request for utility model registration] A lever stand (16) is provided in front of a driver seat (15) to form a control section (5), and a working section (a) is operated by the lever stand (16). In a backhoe in which the operating levers (18), (18) and the traveling levers (2), (2) for operating the aircraft are arranged, the traveling levers (2), (2) are moved to the lever stand (16). Projecting from the front side (16a) to the working part (a) side, and
The levers (2), (2) are gripped (2a), (2a) between the operating levers (18), (18) by extending A traveling lever mounting structure in a backhoe, wherein the traveling lever is disposed so as to be located at a position corresponding to a traveling lever.