JP2001182099A - High-cab type working machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a high-cab type working machine capable of eliminating the need of personnel other than an operator and a stepladder in the case of movement such as transportation and preparing a lift means safely with a simple operation. SOLUTION: A box-like base 4 of a specified height is installed on a frame 3 set on a carrier 1. The base 4 comprises a door 7. A cab 5 is installed on the base 4. An ascent and descent step 10 is installed at the rear of the door 7. In the case of transportation, with the step 6 removed, the door 7 is opened and an operator moves up and down utilizing the step 10 at the rear of the door.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a box-like base having a predetermined height set on a frame set on a traveling body, the base having a door, and a driver's cab being set on the base. The present invention relates to a high-cab type working machine, and more particularly to a means for ascending and descending to a cab for transportation or the like.

[0002]

2. Description of the Related Art FIG. 6 is a front view showing the above-mentioned high cab type excavator before transportation. In the hydraulic excavator, a revolving unit 3 is installed on a traveling unit 1 via a revolving device 2, a box-shaped base 4 is installed in front of the revolving unit 3, and an operator's cab 5 is installed thereon. Of the hydraulic excavator. The width of the large hydraulic excavator body (including the traveling unit 1, the swing unit 2, the swing unit 3, the base 4, and the cab 5 and excluding the step 6 for ascending and descending to the cab 5) (Small width) W and height H are kept within the maximum size of the transportation limit.

[0003] In transporting by trailer, the hydraulic excavator is removed and transported in step 6 in order to keep the width of the excavator within the transport limit width. In this way, the hydraulic excavator must be put on and off the trailer on its trailer with the step 6 removed, but since the height of the cab 5 is more than 3 m, the operator has to move the ground or the vehicle 1. It is not possible to go up and down directly to the cab 5 from above. For this reason, conventionally, the operator used the stepladder 20 or the like to move up and down to the cab 5 separately. For painting the hydraulic excavator, the stepladder 20 was similarly required when the hydraulic excavator was put in the painting place.

[0004]

As described above, when a hydraulic excavator or the like is moved for transportation or painting, a stepladder 2 is used.
0 is required, and the handling is troublesome. Also, at least one worker other than the operator is required. The reason is that in order to move the excavator or the like, it is necessary to prepare the stepladder 20 on the ground or to transport the excavator away from the excavator or the like.

The present invention has been made in view of the above-mentioned problems of the prior art, and does not require a person other than an operator or a stepladder when moving in transportation or the like in a high-cab type working machine.
It is an object of the present invention to provide a configuration in which the lifting means can be prepared safely and with a simple operation.

[0006]

According to the high cab type working machine of the present invention, a box-like base having a predetermined height is installed on a frame installed on a traveling body, the base having a door,
A high cab type working machine having an operator's cab installed on the base, wherein a step for raising and lowering is provided on the back surface of the door.

As described above, if the step for raising and lowering is provided on the back surface of the door, the door can be opened and the step for raising and lowering can be turned to the front side, so that the operator can move up and down into the cab. By closing the door again, the width of the main body is kept within the transport limit width, and there is no hindrance to transportation or painting.

[0008]

FIG. 1A is a side view showing an embodiment of a hydraulic shovel as an example of a working machine according to the present invention, and FIG. 1B is a front view thereof, showing a boom and an arm. The illustration of a backhoe-type or loader-type front including a bucket and a bucket is omitted. In FIG. 1, 1 is a crawler type traveling body, 2 is a turning device installed on the traveling body 1, 3
Reference numeral denotes a revolving unit installed on the revolving device 2, 4 denotes a box-shaped base installed in front of the revolving unit 3, and 5 denotes an operator's cab installed on the base 4. Reference numeral 6 denotes a step for moving up and down to the driver's cab attached to the side surface of the revolving unit 3 or the driver's cab 5. 6
a is a step attached to the frame of the traveling body 1.
Reference numeral 7 denotes a door which is attached to an opening on the side surface of the base 4 by a hinge 8 so as to be freely opened and closed, and 9 denotes a handle thereof. The opening provided with the door 7 has a size enough to allow a half of a human body to enter, and is closed except during internal inspection, that is, when the machine is stopped or working.

FIG. 2A is a side view showing a state at the time of transportation. In the case of transportation, the step 6 on the revolving unit 3 is removed so that the width of the main body falls within the transportation limit width. In this case as well, in order to be able to move up and down onto the cab 5, FIG.
As shown in the state where the door 7 is opened in (B), an elevating step 10 is provided on the back surface of the door 7 and handrails 11 are provided on both sides of the back surface.

FIG. 3 is a cross-sectional view showing the door 7 in a closed state, FIG. 4 is a cross-sectional view showing the door 7 in an open state, and FIG. 5 is an EE enlarged cross-sectional view of FIG. As shown in FIGS. 3 and 4, a handle 9 provided on the free end side of the door 7 has a vertical axis 1 provided on a bracket 12 attached to the back surface of the door 7.
3 is provided so as to be rotatable about the center 3, and a locking claw 14 is provided integrally with the handle 9. The handle 9 and the locking claw 14 are urged by a spring (not shown) in a rotation direction indicated by an arrow a in FIG. The base 4 has a catch 1 for the locking claw 14.
5 are provided. Then, when the handle 9 is pulled in the direction of the arrow b against the force of the mainspring from the solid line state in FIG. 3, the locking claw 14 comes off the metal fitting 15, and as shown by the arrow c,
The door 7 can be opened.

As shown in FIGS. 4 and 5, when the door 7 is opened, a stopper 16 is used to fix the opened state. Although various types of stoppers can be used as the stopper, the stopper 16 of this example is formed of a bent rod, and one end of the stopper 16 is formed in a hole 17 provided in the lower frame 4 a of the base 4. The other end is rotatably inserted, and the other end is detachably inserted into a hole 18 provided in the bottom portion 7a of the door 7 and fixed.

When the door 7 is open, the step 10 and the handrail 11 are located on the surface of the base 4, so that
The operator can ascend to the cab 5 by using the step 6a of the traveling body 1, the step 10 of the door 7, and the handrail 11. After the operator ascends to the operator's cab 5 and drives to mount the hydraulic excavator on the trailer by himself / herself, the operator descends using step 10, the handrail 11, and step 6a of the traveling body 1. After descending, the stopper 16 is lifted, one end thereof is pulled out from the hole 18 of the bottom 7a of the door 7, and the stopper 16 is put into the base 4 as shown by an arrow d as shown by a two-dot chain line in FIG. , The door 7 closes as shown by the arrow e.
In this manner, when the door 7 is closed, the width of the main body of the excavator can be kept within the limited transport width.

After moving to the destination, the vehicle 1
Using the step 6a, the step 10 of the door 7, and the handrail 11, the user climbs up to the cab 5 and lowers the hydraulic excavator from the trailer by self-propelled operation. In this way, without using tools
The door 7 can also be used as a lifting means. Also,
Without using a separate stepladder, the operator can ascend and descend into the cab with only one operator.

The present invention can be applied not only to a hydraulic excavator but also to an applied machine, a crane, or an applied machine. Further, the present invention can be applied to a working machine without the turning device 2.

[0015]

According to the present invention, the steps are provided on the back surface of the base door, so that the operator does not need a stepladder when moving up and down the operator's cab when moving the work machine.
The operator can ascend and descend to the operator's cab.
In addition, labor can be saved, and the trouble of preparing a stepladder or the like in the elevating operation is eliminated. In addition, since the step is provided on the back surface of the door, the width of the main body can be kept within the limited transport width by closing the door during transportation. In addition, since the steps are prepared by opening and closing the door, the steps can be used easily without the need for tools.

[Brief description of the drawings]

FIG. 1A is a side view showing an embodiment of a hydraulic shovel as an example of a working machine according to the present invention, omitting a front, and FIG. 1B is a front view thereof.

2A is a side view showing a state of the excavator shown in FIG. 1 at the time of transportation, and FIG. 2B is a side view of the excavator showing a state in which a base door is opened for an operator to go up and down to a cab. It is a side view.

FIG. 3 is a cross-sectional view showing a state in which a door according to the present embodiment is closed.

FIG. 4 is a cross-sectional view showing a state in which the door is opened in the present embodiment.

FIG. 5 is a sectional view taken along the line EE of FIG. 4;

FIG. 6 is a front view showing a conventional hydraulic excavator in a state where a stepladder is installed near a cab during transportation.

[Explanation of symbols]

1: running body, 2: swing device, 3: swing body, 4: base,
5: cab, 6: step, 6a: step, 7: door, 8: hinge, 9: handle, 10: step, 11: handrail, 12: bracket, 13: vertical axis, 14: locking claw, 1
5: metal fittings, 16: stopper, 17, 18: hole

Claims (1)

[Claims] 1. A high cab type base having a box-shaped base having a predetermined height provided on a frame provided on a traveling body, the base having a door, and a driver's cab being provided on the base. A high cab type working machine, wherein a working step is provided on a back surface of the door.