JPS6225922Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a driving cabin for a construction work vehicle or an agricultural work vehicle, and more particularly to a windshield opening/closing structure on the front side of the cabin.

When the above operating cabin is configured, conventionally, a windshield holding frame is attached to the cabin body so as to be swingable around a horizontal axis or a vertical axis, and when the windshield holding frame is in the open state, the windshield holding frame is fixed outside the cabin. The windshield holding frame was moved from the front of the cabin along the ceiling and stored along the ceiling. There are drawbacks such as not being able to open the windshield, or the windshield holding frame obstructing visibility when it is in the retracted state.
In addition, in the case of a windshield that moves the entire surface of the windshield upward to open and close, it is difficult and labor-intensive to operate, and the windshield may be damaged in the event of an unexpected accident while the windshield is in the retracted state. There was a drawback that there was a risk of glass shards falling on it.

In view of the above-mentioned conventional situation, the purpose of this invention is to make it possible to open the windshield over the entire front of the cabin to improve visibility, improve ventilation, and improve comfort. To provide an excellent driving cabin which can be easily opened and closed, does not obstruct visibility in a stored state, and has safety against unexpected accidents.

The characteristic structure of the present invention is that the entrance/exit door is attached so that it can be changed to a forward swinging position connected to a windshield holding frame that can slide from side to side by swinging around the vertical axis on the front side of the cabin. A space for storing the holding frame is formed in the door, and the holding frame is attached so that it can be moved in and out of the door in the forward swinging position by sliding from side to side.

The functions and effects of the characteristic configuration of the present invention are as follows. In other words, since the windshield holding frame is stored using the entrance/exit door originally provided in the cabin, the windshield holding frame extending over the entire front of the cabin should not obstruct the view, and It can be stored compactly so that it does not interfere with other equipment, and when it is stored, the door is in a forward swinging position that connects to the windshield, and the windshield holding frame can be opened and closed by sliding left and right. Because it is a device, it can be easily operated compared to conventional ones that swing or slide the windshield holding frame upward, and it is stored inside the door.
The glass is hard to break and safety for the operator can be improved.In short, the driving cabin has good visibility, is excellent in terms of comfort, operability, and safety, and also has a windshield holding frame that can be stored compactly. We were able to provide the following.

Next, embodiments of the present invention will be described in detail based on illustrative drawings.

As shown in FIG. 1, a swivel base 3 is attached to a machine base equipped with a pair of left and right crawler traveling devices 1 so that it can be driven and rotated freely around the vertical axis. 5, a backhoe device 6 that can be vertically oscillated and bent/stretched is installed, and an earth removal device 2 is attached to the front of the machine base.
It is configured as a work vehicle that is mainly used for trenching and soil removal work.

As shown in FIG. 2, the operating cabin 4 is constructed by providing an entrance/exit door 7 on one side of the box-shaped cabin 4 equipped with a top plate so as to be able to swing back and forth around the vertical axis. , the windshield holding frame 8 with the windshield mounted thereon is attached so as to be openable and closable over the entire front surface of the cabin 4, so as to improve forward visibility when working with the front surface of the cabin 4 open; It is designed to improve ventilation and improve livability.

2, 3 and 5 when opening and closing the windshield holding frame 8 that extends over the entire front surface of the cabin 4.
As shown in the figure, a windshield holding frame 8 is fitted and supported on a pair of guide rails 9 provided at the upper and lower ends of the front surface of the cabin 4 so as to be able to slide left and right and be fixed, and the door 7 for entrance and exit is fitted and supported. Between the butterfly plate 10 on the rear side of the door 7, which is used during normal opening and closing, and the butterfly plate 11 provided on the front side of the door 7, which allows the door 7 to swing backwards with the pivot connection pin removed during normal operation. By replacing the pivot connection pin at , the cabin 4 can be swung around the vertical axis on the front side, and the front swivel position can be changed to the front swinging position connected to the left-right slidable windshield holding frame 8. Door 7 in rocking position
On the other hand, by sliding the holding frame 8 from side to side, the holding frame 8 can be moved into the holding frame 8 storage space provided inside the door 7 with a light operating force.
It is configured so that it can be put in and taken out, and after the storage in the door 7 is completed, the door 7 is closed,
By replacing the pins on the butterfly plates 10 and 11 again,
The door 7 is configured so that it can be used normally, and the holding frame 8 in the stored state does not obstruct the forward view of the cabin 4 or become an obstacle to other equipment. Prevents the windshield from being damaged.

When storing the holding frame 8 inside the door 7, as shown in FIG.
A pair of upper and lower storage rails 12 are provided that are continuous with the guide rails 9 provided on the upper and lower ends of the front surface of the cabin 4 and guide the sliding of the holding frame 8 into the storage space when the door 7 is in the forward swinging position. By operating the lever tool 13 provided on the outer surface, it comes into pressure contact with the holding frame 8,
A cam-type fixing device 14 is provided that uses the pressing force to abut and fix the holding frame 8 against the inner surface of the storage rail 12, so that the windshield holding frame 8 in the stored state does not wobble due to vibrations of the vehicle body. It is structured as follows.

Further, the door 7 is provided with a window portion 15 equipped with transparent plates on both its inner and outer surfaces, so that the outside of the door 7 can be seen through the windshield even when the windshield holding frame 8 is in the retracted state. At the same time, pins 16 that engage with engagement holes in the door frame on the side of the cabin 4 are provided on the upper and lower end surfaces of the door 7 so as to be freely retractable, and the door handles 17 on the inner and outer surfaces of the door 7 and the pins 16 are attached to the front side in the retracted state. Glass holding frame 8
The door 7 is interlocked and connected by a link mechanism 18 arranged in a detour manner, and the door 7 can be locked when the door 7 is normally closed.

Next, another embodiment will be described.

To slide the windshield holding frame 8 left and right,
The windshield holding frame 8 may be configured by attaching a roller to be fitted onto the guide rail 9, and the structure for supporting the windshield holding frame 8 to the front surface of the cabin 4 can be modified in various ways.

The driving cabin according to the present invention can be applied not only to backhoe work vehicles but also to various work vehicles such as construction workers and agricultural work vehicles.

[Brief explanation of the drawing]

The drawings illustrate an embodiment of the driving cabin of a working vehicle according to the present invention, and FIG. 1 is an overall side view of the backhoe working vehicle, FIG. 2 is a front view of the main parts, and FIG. 3 is a cross-sectional view of the main parts. , FIG. 4 is a partially omitted vertical sectional view of the door for getting on and off, and FIGS. 4... Driving cabin, 7... Door, 8... Windshield holding frame.

Claims (1)

[Scope of utility model registration request] The entrance/exit door 7 is attached so that it can be changed to a forward swinging position connected to a windshield holding frame 8 that can slide left and right by swinging around the vertical axis on the front side of the cabin 4, and the inside of the door 7 is A driving cabin for a work vehicle, characterized in that a space is formed in which the holding frame 8 is housed, and the holding frame 8 is attached to the door 7 in the forward swinging position so that it can be taken in and out of the door 7 by sliding left and right. .