JP2546731Y2 - Cabin structure in 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 cabin structure in a backhoe having a drilling device on a turning frame.

[0002]

2. Description of the Related Art Conventionally, a cabin structure of a backhoe is constructed as shown in FIG. 5, in which a turning frame 30 is formed in a circular shape and a driver's cabin 31 provided on the turning frame 30 is provided with a cabin 31 The outer shape of 31 is not configured along the shape of the turning frame 30.

[0003]

However, in the above-mentioned prior art, the opening / closing door 32 of the driver's cabin 31 opens and closes outward around a hinge. If the turning frame 30 rotates in the open state, the turning frame 30 may be damaged by an obstacle.

[0004] Further, when working at the wall edge, there is a problem that the opening / closing door 31 cannot hit the wall and cannot be opened / closed.

[0005]

According to the present invention, in a backhoe on which a revolving frame provided with an excavator is mounted on an upper part of a traveling device, the outer shape of the revolving frame is formed in a circular shape in plan view, and the revolving frame is formed in the same shape. A driver's cabin is provided on the frame, and the opening and closing door that partially forms the cabin is formed in an arc shape along the shape of the turning frame, and is supported on the upper and lower portions of the inner surface of the opening and closing door, respectively. While installing the rollers, the cabin is provided with upper and lower rails that are formed in an arc shape in plan view along the side plate of the cabin, and the opening and closing doors are mounted on both upper and lower rails via support rollers, and the opening and closing door is pivoted The present invention provides a cabin structure in a backhoe, characterized in that it can be slidably opened and closed without protruding from the outer shape of the backhoe.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail with reference to the drawings. In FIG. 1, reference numeral 1 denotes a backhoe, on which a revolving frame 3 is mounted on a crawler type traveling device 2 so as to be revolvable. .

The outer shape of the revolving frame 3 is substantially circular in plan view as shown in FIG.

Reference numeral 4 denotes an excavator, which connects an offset arm 7 and a bucket arm 8 to an upper portion of the intermediate boom 6 while connecting an intermediate boom 6 to an upper portion of the main boom 5.

Reference numeral 9 denotes an excavating bucket provided at the tip of the bucket arm 8, reference numeral 10 denotes a main boom cylinder for raising and lowering the main boom 5 up and down, reference numeral 11 denotes an offset cylinder for rotating the offset arm 7 in the left-right direction, reference numeral 12 denotes an arm cylinder, 13
Are bucket cylinders, which constitute the excavator 4.

Reference numeral 14 denotes a driver's cabin provided on the circular turning frame 3.
The outside 14-1 of 14 is formed in an arc shape in plan view so as to follow the shape of the turning frame 3.

Reference numeral 15 denotes an opening / closing door provided in the cabin 14, which is formed in an arc shape and has rollers on both upper and lower sides.
16 is provided, and is opened and closed in an arc shape while being supported by an upper rail 17 and a lower rail 18 formed in an arc shape.

Reference numeral 19 denotes an operation panel, reference numeral 20 denotes an operation lever, and reference numeral 21 denotes a driver's seat. Reference numeral 22 denotes an engine mounted on the turning frame 3, reference numeral 23 denotes a fuel tank, and reference numeral 24 denotes a hydraulic oil tank.

The embodiment of the present invention is configured as described above. When the driver gets into the cabin 14, the open / close door 15 formed in an arc shape is moved rearward along the upper and lower rails 17,18. Move to Then, after the driver gets in, the opening / closing door 15 is closed. Therefore, the opening and closing door 15 can be slidably opened and closed without protruding from the outer shape of the revolving frame 3.

As described above, according to the above embodiment, the outer shape of the turning frame 3 is formed in a circular shape in plan view, and the cabin 14 for the driver is provided on the turning frame 3, and the cabin 14 is formed. The planar shape of the opening / closing door 15 is formed in an arc shape along the shape of the revolving frame 3, and the opening / closing door 15
15 is an arc-shaped sliding opening and closing operation within the outer shape of the revolving frame 3, so that even when the opening and closing door 15 is opened, the opening and closing door 15 does not come into contact with obstacles, and work can be performed safely. It can be done.

Further, at the work site, the opening / closing door 15 can be opened even if it is a wall, so that the driver can easily get on and off.

FIG. 6 shows an embodiment relating to a muffler cover connected to the engine. In the figure, reference numeral 40 denotes a silencer connected to the engine, the upper part of which is covered with a hood 41. Reference numeral 42 denotes an exhaust tail pipe projecting obliquely upward from the silencer 40. At the upper end of the exhaust tail pipe 42, a perforated plate 42-1 and a wire mesh are provided to form an air outlet 42-2.

Reference numeral 43 denotes an exhaust pipe cover for covering the outer circumference of the exhaust tail pipe 42. A sound absorbing material 44 such as glass wool is adhered to the inner circumference. 45 is a partition plate and 46 is a fixing bolt.

Therefore, according to the above-described embodiment, since the perforated plate 42-1 and the wire mesh are provided at the outlet 42-2 of the exhaust tail pipe 42, the exhaust of the engine is blown out from the small holes, and is generated by the exhaust. The low frequency of the noise is greatly attenuated.

High-frequency noise among the noise generated by the exhaust of the engine is absorbed by the sound absorbing material 44, and the exhaust noise is reduced as a whole.

[0020]

According to the present invention, the turning frame has a circular outer shape in plan view, a driver's cabin is provided on the turning frame, and the opening / closing door that partially forms the cabin is provided. The plane shape is formed in an arc shape along the shape of the revolving frame, and the support rollers are attached to the upper and lower parts of the inner surface of the opening and closing door, while the cabin is formed in an arc shape in plan view along the side plate of the cabin. When the open / close door is opened because the open / close door is mounted on both upper and lower rails via support rollers, and the open / close door can be slidably opened and closed without protruding from the outer shape of the turning frame However, the opening and closing door does not come into contact with obstacles, and the work can be performed safely.

Further, at the work site, for example, even when the door is opened by stopping at the wall, the door can be opened without worrying about the interference of the door with the wall. The driver can easily get on and off the vehicle.

[Brief description of the drawings]

FIG. 1 is an overall side view of a backhoe equipped with the present invention.

FIG. 2 is a plan view of a main part of the present invention.

FIG. 3 is a perspective view of the main part.

FIG. 4 is a sectional view of an opening / closing door unit.

FIG. 5 is a plan view showing a conventional type.

FIG. 6 is a sectional side view of a muffler cover portion of the engine.

[Explanation of symbols]

 2 Traveling device 3 Revolving frame 4 Drilling rig 14 Cabin 15 Openable door

Claims (1)

(57) [Scope of request for utility model registration] An excavator (4) is mounted on an upper part of the traveling device (2).
The backhoe with the revolving frame (3)
To make the outer shape of the revolving frame (3) circular in plan view.
And the driver's cabin (1
4), and open and close to form part of the cabin (14)
Adjust the shape of the door (15) according to the shape of the swing frame (3).
The door (15) at the top and bottom.
While installing the support rollers (16), (16) respectively,
(14), along the side plate of the cabin (14)
The upper and lower rails (17) and (18) are
Roller (16), (16)
And open the door (15) of the revolving frame (3).
A cabin structure in a backhoe, characterized in that it can be slidably opened and closed without protruding from the outer shape .