JPS5816947Y2 - Driving cabin door for work vehicle - mounting structure - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to the structure of a driving cabin for a working vehicle, and more specifically, the invention includes a front door that is swingably mounted around a vertical axis that stands upright on the front side of the cabin. The present invention relates to the structure of a driving cabin for a working vehicle, which is configured to be slidable in the front and rear directions while being guided by a guide frame disposed along the lateral and side walls of the cabin.

As shown in Japanese Unexamined Patent Publication No. 51-109620, a conventional technique is to attach guide frames to the upper and lower parts of the side walls of the cabin, and to fit the front door support fittings into the guide frames so as to be movable. It is known that the upper and lower ends of the front door on the 〇- side are attached to the metal fittings via rotating metal fittings, and the guide pins that fit into the guide frame are attached to the upper and lower ends of the other side of the front door. With conventional structures, the door is opened from the cabin and slid into the side wall of the cabin.

The structure is such that the door support fittings are guided by the guide frame and move together with the door, so when the door is opened to the storage position, the couple force due to the door's own weight causes the support fittings sliding on the guide frame to move upward and downward in a straight line. It has the disadvantage that it is not stable and can get stuck, making it difficult to store it smoothly in the door.
Another drawback is that the door tends to swing around the rotating metal fittings until it is completely retracted, making it difficult to store the door.

The object of the present invention is to provide a door that can be stably stored by sliding the top and bottom of the door on a guide frame, and that does not rotate when opened during storage.

The structure of the door mounting structure of the driving cabin for a working vehicle, which is a feature of the present invention, is such that, in the structure of the driving cabin for a working vehicle recorded in the official register, the vertical axis is set at a vertical distance approximately equal to the vertical length of the front door. It is integrally fixed at one end position on the front side of a pair of upper and lower guide frames arranged apart from each other. A guide member is provided with a guide surface having a substantially oval cross-section, which is composed of a partially arcuate surface concentric with the core and an oblique surface along the extending direction of the guide frame, each has a large-diameter pivot hole that fits onto the arcuate surface of the guide member to allow the front door to rotate, and a width corresponding to the thickness between the flat surfaces of the guide member; In addition, the guide hole is characterized in that a guide hole formed in series with the long hole is provided along the length direction of the upper and lower frames, and this structure provides the following effects.

- When the front door of the cabin is opened and closed by swinging, it can be freely opened and closed around the vertical axis by sliding and rotating the pivot hole with respect to the arcuate surface of the guide member.

■ When you open the door to the storage position and push the door along the guide frame, the door will be guided by the pair of upper and lower guide frames and the guide members attached to the upper and lower ends of the vertical shaft during storage. This has the advantage that it is easy to store with the door because it does not open and rotate as usual when stored.

■ When sliding a door, the door is not slid with only one end supported by the upper and lower guide frames as in the past, but at least the vertical axis is also supported, so the door remains stable as it is retracted. There are advantages to being supported.

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

Excavating work is carried out by installing a working arm 5, which has a packet 4 attached to its tip and which can swing vertically and bend freely, on a swivel base 3 which is provided above the traveling machine base 1 and is equipped with an operating cabin 2. This is a backhoe that can be used for this purpose.

A side wall 6 on the inside of the body, a side wall 8 on the outside of the body with a door 7 for getting on and off the body, and a side wall 9 on the rear side of the body. And each of these walls 6,
By the top plate 10 provided on 8 and 9.

In order to form an indoor space, the cabin 2 is constructed by providing a front door 11 at the front opening thereof.

An opening/closing support shaft for the front door 11 is provided as a vertical shaft 12 on the front side of the cabin 2, and the front door 11 can be opened and closed by swinging around the vertical shaft 12. It is configured.

The front door 11 in the open state is slidably in contact with the vertical shaft 12 and the guide frames 14, 14 so that it can be slid and stored at the rear of the aircraft body.
have an L-shaped cross-section, with free sides facing each other above and below the horizontal wall 6.

They are arranged with a vertical interval substantially equal to the vertical length of the front door 11.

The vertical axis 12 is connected to the pair of upper and lower guide frames 14, 14.
The vertical shaft 12 is integrally fixed at one end position on the front side thereof, and the vertical shaft 12 is integrally fixed at one end position on the front side. A guide member 17 is provided which has a guide surface having a substantially oval cross-section, which is composed of a partially arcuate surface coaxial with the axis of the shaft 12 and an oblique surface along the extending direction of the guide frames 14, 14. .

The front door 11 has upper and lower frames 11a.

A guide hole 13 is formed in each of the holes 11b.

This guide hole 13 has a width corresponding to the thickness between the flat surfaces of the guide member 17, and has an upper and lower frame 11a.

A long hole 13b is formed long along the length direction of 11b, and a large diameter hole is provided at one end of the long hole 13b to fit onto the arcuate surface of the guide member 17 and allow the front door 11 to rotate. It is formed in series from the pivot hole 13a.

Now, when the front door 11 is opened around the vertical axis 12 to a position along the guide frames 14, 14, the guide member 17 can be slid into the elongated hole 13b, and the front door 11 is moved to the guide frame 14. 14 to the rear of the aircraft.

At this time, the front door 11 is guided by the guide frames 14, 14 and the vertical shaft 12, so the front door 11 is
1 will open and can be stored smoothly.

Locking mechanisms 16 corresponding to the locking members 15 of the front door 11 are provided on both sides of the cabin 20, so that the door 11 can be locked in either the closed state or the stored state.

In the above-mentioned embodiment, since it can be stored parallel to the horizontal wall 6, less space is required in the lateral direction of the fuselage for storage.

The present invention can be applied to various work vehicles such as carpentry vehicles such as face shovels and cargo handling vehicles such as cranes.

[Brief explanation of the drawing]

The drawings show an example of the structure of the door installation of the driving cabin for a work vehicle according to the present invention, and Fig. 1 is an overall side view of the backhoe, Fig. 2 is a perspective view of the main parts, and Fig. 3 is a part of the slide mechanism. FIG. 2...Cabin, 6...Horizontal axis, 11.
...Front door 11a...Top frame of door, 11b...Bottom frame of door, 12...
- Vertical shaft, 13a... Pivot hole, 13b Id member. 13...Gai toyi,...Long hole, 17...Gait

Claims (1)

[Scope of Claim for Utility Model Registration] A front door 11 is mounted so as to be swingable around a vertical shaft 12 erected on the front side of the cabin 2 along the side and side walls 6 of the cabin 2. This is a structure of a driving cabin for a working vehicle configured to be slidable in the front and back direction guided by a guide frame 14 provided, in which the vertical axis 12 is arranged at a vertical distance approximately equal to the vertical length of the front door 11. It is integrally fixed at one end position on the front side to a pair of upper and lower guide frames 14, 14 arranged apart from each other. Near the connecting portion between the vertical shaft 12 and the guide frames 14, 14, there is a partially arcuate surface concentric with the axis of the vertical shaft 12, and a flat surface along the extending direction of the guide frames 14, 14. A guide member 17 having a guide surface having a substantially oval-shaped cross section is provided,
The front door 11 has upper and lower frames 11a, 1
a large-diameter pivot hole 13a that fits onto the arcuate surface of the guide member 17 and allows the front door 11 to rotate. The guide hole 13 has a width corresponding to the thickness between the flat surfaces of the guide member 17 and is formed in a series with a long hole 13b formed long along the length direction of the upper and lower frames 11a and 1 lb. A door mounting structure for a driving cabin for a work vehicle, characterized by a built-in structure.