JP2001064999A - Handhold of excavation working vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To install a handhold to be gripped for supporting operator's body by an operator during running or the like without increasing the number of constitution members for an excavation working vehicle. SOLUTION: A canopy structure or cabin structure has a window part 23 erecting a vertical wall 22 partitioning a cabin 6 and a working machine device 5 in one side of a cabin seat provided on a turning body 4 and as a transparent part constituted of a transparent member 23 capable of seeing the working machine device 5 therethrough from the cabin seat. Protection covers 25a, 25b, 25c are framed from one end of the window part 23 to the other end, and a part of the protection cover 25c is projected to the side of the cabin seat to form a hand hold part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an excavating work vehicle equipped with a working machine such as a backhoe and the like. The present invention relates to a configuration of a handhold of an excavating work vehicle for an operator to grasp and support a body.

[0002]

2. Description of the Related Art In an excavating work vehicle equipped with a working machine such as a backhoe, a hand-hold which is held by an operator who performs a driving operation in a driver seat provided on a revolving body to support the body during traveling or the like. Some are provided. For example, there is one in which a frame body is erected at the front end of the revolving body, and the frame body is used as a hand hold member that is gripped when an operator gets on and off the driver's seat on the revolving body. It also serves as a guard member for protecting the seat operator. As disclosed in Japanese Utility Model Application Laid-Open No. 60-87267. As a frame provided near the driving section, there is a frame provided as a handle for opening and closing a front window of a cabin erected on a revolving structure, and this handle is also used as a reinforcing member of a frame of the front window. I have. As described in JP-A-7-186713.

[0003]

However, as described above,
In the case where a frame is provided at the front end of the revolving structure, the frame is separately provided as a hand hold member, and the number of components of the excavation work vehicle increases, which causes a cost increase. Was. Therefore, in the present invention, a hand hold that is gripped by an operator to support the body during traveling or the like is installed without increasing the number of components of the excavator.

[0004]

The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described. That is, in claim 1, a vertical wall that partitions the driver's seat and the work equipment device is erected on one side of the driver's seat provided on the revolving structure, and the work equipment device is mounted on the vertical wall from the driver's seat. In a canopy structure or a cabin structure of an excavation work vehicle having a transparent part formed of a transparent member that can be seen through, a protection bar is erected from one end to the other end of the transparent part,
A part of the protection bar is protruded to the driver's seat side so that it can be gripped.

[0005]

Next, embodiments of the present invention will be described with reference to the drawings. 1 is a side view showing an excavator having a hand hold according to the present invention, FIG. 2 is a front view thereof, FIG. 3 is a perspective view thereof, and FIG. 4 is a side view showing a protection bar installed on a window of a canopy. FIG. 5 is a plan view showing a protection bar on which a hand hold unit is formed, and FIG.
Is a plan view showing a hand hold section of the protection bar, and FIG. 7 is a plan view showing another embodiment of the hand hold section.

[0006] The configuration of a micro turning work vehicle having a hand hold according to the present invention will be described. 1 and 2,
A revolving unit 4 is rotatably mounted on a traveling unit 1 equipped with a pair of left and right crawler traveling units 2, and a driver's seat 6 is arranged on one side of the revolving unit 4. Various levers 7 are arranged in front of and right and left of the driver's seat 6, and the driver's seat 6, various levers 7 and the like constitute a driving operation unit 9, and the driving operation unit 9 is covered with a canopy 15. ing.

A lift bar 19 is provided on the side of the driving operation unit 9 opposite to the work machine device 5, and when the operator gets on and off the driving operation unit 9, he / she gets on and off while holding the loading / unloading bar 19. It allows you to easily get on and off with a stable posture. In addition, the working equipment 5
, And a blade 3 is mounted on, for example, a rear end of the traveling device 1.

The work machine device 5 includes a first boom 10 attached to the revolving unit 4 so as to be rotatable up and down, a second boom 11 attached to the tip of the first boom 10 so as to be rotatable in the left-right direction,
A third boom 12 attached to the second boom 11 so as to be rotatable in the left-right direction, an arm 13 attached to the third boom 12 so as to be rotatable in the vertical direction, and the arm 13
And a bucket 14 which is a work attachment attached to the tip of the arm 13. The arm 13 and the bucket 14 can be offset in the left-right direction by turning the second boom 11 in the left-right direction.

A boom cylinder 29 is interposed between the first boom 10 and the revolving unit 4, and the boom cylinder 29
The first boom 10 can be turned up and down by the expansion and contraction of the arm 1 and the arm cylinder 17 is interposed between the third boom 12 and the arm 13.
3 is vertically rotatable, a bucket cylinder 48 is interposed between the arm 13 and the bucket 14, and the bucket 48 is vertically rotatable by expansion and contraction of the bucket cylinder 48.

The lower end of the second boom 11 is connected to the upper end of the first boom 10 so as to be rotatable left and right, and the upper end of the second boom 11 is connected to the third boom 12 so as to be rotatable left and right. An offset cylinder 31 is interposed between the second boom 11 and the first boom 10. Further, an offset rod 30 is provided between the first boom 10 and the third boom 12, and both ends of the offset rod 30 are pivotally attached to the first boom 10 and the third boom 12, respectively. .

The bucket 14 is eccentrically offset from the first boom 10 in the left-right direction by expanding and contracting the offset cylinder 31. In this case, the bucket 14 is located between the first boom 10 and the third boom 12. The first boom 10 in a front view is provided by the inserted offset rod 30.
And the third boom 12, the arm 13, and the bucket 14
Are not changed, and are offset while maintaining the parallel state.

Next, the structure of the canopy 15 will be described. The canopy 15 is mainly composed of a ceiling surface 21 disposed above the driver's seat 6 and a vertical plate 22 erected between the driver 9 and the work equipment 5. The ceiling surface 2
1 is supported by a vertical plate 22 and support columns 29 and 23, and the operating unit 9 and the work equipment 5 are separated by the vertical plate 22.

An upper portion of the vertical plate 22 is opened to form a window 23, and a transparent member 23a such as glass or plastic is fitted in the window 23. That is, the window portion 23 of the vertical plate 22 constitutes a transparent portion, and the driving member 6 can be seen from the driver's seat 6 through the window portion 23, and the driving operation is performed in the driver's seat 6 by the transparent member 23a. Protect operators who do.

As shown in FIG. 3 and FIG.
For example, on the inner side of the transparent member 23a (on the driver's seat 6 side), the window 23 is partitioned from the front end to the rear end.
A plurality of protection bars 25a, 25b, 25c are provided. The protection bars 25a and 25b are installed between the front frame 22a and the rear frame 22b of the vertical plate 22,
The protection bar 22c includes a front frame 22a and a lower frame 22.
c. Then, the transparent member 23a
However, in the event that the window 23 comes off or is damaged, the protection bars 25a, 25b, and 25c protect the operator from leaning into the work machine device 5 through the window 23. .

As shown in FIGS. 4 to 6, the rear end of the protective bar 25c disposed below the window 23 is fixed to the lower frame 22c.
And extends substantially horizontally from the front toward the front. The front end of the protection bar 25c is bent so as to protrude inward (to the driver's seat 6 side) to form a hand hold portion 28. The hand hold portion 28 is seated on the driver's seat 6 to perform a driving operation. It is formed in a shape that can be gripped by an operator in a posture.

That is, the hand hold unit 28 constitutes a hand hold for an operator who performs a driving operation with the driving operation unit 9 to hold and support the body. For example, when traveling on a rough road, by operating the traveling lever or the like of the excavator with one hand, the other hand can be used to grip the hand hold portion 28 protruding toward the driver's seat 6. The body can be supported, and the running operation can be performed in a stable posture.

In this embodiment, the protection bars 25a and 2
Although 5b and 25c are installed in a substantially horizontal direction, they may be installed in a substantially vertical direction or may be installed at an angle. A hand hold portion 28 projecting toward the driver's seat 6 is formed at the front end of the protection bar 25c.
It can be formed in the middle of 5c or on the protection bars 25a and 25b, and can be formed at an appropriate place where the operator performing the driving operation can stably support the body in a comfortable posture. .

Further, the hand hold unit 28 can be formed in a shape as shown in FIG. That is, the protection bar 25c in FIG. 5 has its front end folded back toward the driver's seat 6 to form a substantially elliptical shape, thereby forming a hand hold portion 28 '. This substantially oval-shaped hand hold portion 28 'is also similar to the hand hold portion 28 described above.
It is formed in a shape that can be gripped by an operator sitting in the driver's seat 6 and in a driving operation posture.

The hand-hold formed on the protection bar 25c and held by the operator to support the body is not limited to the shape of the hand-hold portions 28 and 28 ', but is directed to the driver's seat 6 side from the vertical plate 22. As long as it is made to protrude, it should just be formed in the shape which an operator can grasp.

As described above, in the present excavation work vehicle, the hand hold portion 28 as a hand hold is formed on the protection bar 25c provided on the window portion 23 of the vertical plate 22 disposed on the side of the driver's seat 6. Therefore, the protection bar 25c originally provided for protecting the operator in the driver's seat 6
In addition, a handle function as a hand hold for supporting the body can be added. Accordingly, it is not necessary to separately provide a hand hold for supporting a body such as a frame body, and the hand hold can be configured without increasing the number of constituent members, and the cost of the excavator can be reduced. . In this embodiment, the excavator of the canopy specification has been described. However, similarly, in the excavator of the cabin specification, a handle function as a hand hold may be added to a protection bar for protecting an operator. it can.

[0021]

As described above, the present invention has the following advantages. That is, as in claim 1,
A vertical wall separating the driver's seat and the work equipment is erected on one side of the driver's seat provided on the revolving structure, and the vertical wall is formed of a transparent member through which the work equipment can be seen from the driver's seat. In a canopy structure or a cabin structure of an excavation work vehicle having a transparent part, a protection bar is erected from one end to the other end of the transparent part, and a part of the protection bar is protruded toward the driver's seat side to be gripped. As a result, the protection bar, which is originally provided to protect the operator in the driver's seat, can be gripped and supported when the body is likely to fall down due to inertia during driving or work operation. It acts as a handle as a hold. Accordingly, it is not necessary to separately provide a hand hold for supporting a body such as a frame body, and the hand hold can be configured without increasing the number of constituent members, and the cost of the excavator can be reduced. .

[Brief description of the drawings]

FIG. 1 is a side view showing an excavating work vehicle having a hand hold according to the present invention.

FIG. 2 is a front view of the same.

FIG. 3 is a perspective view of the same.

FIG. 4 is a side view showing a protection bar installed on a window of the canopy.

FIG. 5 is a plan view showing a protection bar on which a hand hold unit is similarly formed.

FIG. 6 is a plan view showing a hand hold section of the protection bar.

FIG. 7 is a plan view showing another embodiment of the hand hold unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Traveling device 4 Revolving superstructure 5 Work equipment device 6 Driver's seat 9 Driving operation part 15 Canopy 22 Vertical plate 23 Window 23a Transparent member 25a / 25b / 25c Protective bar 28 Hand hold part

Claims (1)

[Claims] 1. One side of a driver seat provided on a revolving superstructure,
A canopy structure or a cabin of an excavating work vehicle having a vertical wall that divides the driver's seat and the work equipment device, and having a transparent portion formed on the vertical wall with a transparent member through which the work equipment device can be seen from the driver's seat. A hand of an excavation work vehicle, wherein a protection bar is provided from one end to the other end of the transparent part, and a part of the protection bar is protruded toward a driver's seat side to be gripped. hold.