JPH0715858U - Cab guard attachment device - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent an increase in weight load on the top plate of the cab and improve the cab durability and ride comfort. [Structure] A frame-shaped sub-frame for mounting a gate around a skylight glass part 2 and a windshield glass part 3 of a cab 1 of a construction machine.
The window 4 is fixed to the window 4 so that it can be removed.
And the one to which the front window net guard 6 is attached. [Effect] It is possible to prevent the rolling of the cab, the deterioration of the riding comfort, the deterioration of the cab durability, the cracking of the net guard, etc. which have been conventionally caused by the mounting of the sub-frame type net guard.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a guard for protecting a skylight and a windshield of a cab of an operator of a construction machine, and more particularly to a cab guarding device for a cab.

[0002]

[Prior art]

 Conventionally, construction machines such as hydraulic excavators are used not only for excavating earth and sand but also for a variety of tough operations. In some cases, a net guard is attached to protect the window glass. That is, for example, as shown in FIG. 2, the nets 26 and 27 are separately attached to the frames 28 and 29 of the skylight 22 and the front window 23 of the cab 21, respectively, and bolts 30 and 30 are provided as net guards 24 and 25. Some are attached by 31. As an example of the external prior art, there is Japanese Utility Model Laid-Open No. 3-42848 and the like, in which there is no skylight and only the front window is provided with a net guard.

[0003]

[Problems to be solved by the device]

 However, since the net guards 24 and 25 configured as shown in FIG. 2 are mounted separately for the skylight and for the front window, the netguard 24 for the skylight is particularly installed on the top plate portion with respect to the cab 21. It becomes a weight load and increases the rolling of the cab 21 as shown in FIG. Therefore, there is a problem that not only the riding comfort of the lift cab 21 is deteriorated and the durability of the cab 21 is affected, but also the displacement due to the rolling causes the front window net guard 25 to crack.

In view of this, the present invention provides a cab girder mounting device capable of preventing an increase in weight load on the top plate portion of the cab and improving the durability of the cab and the riding comfort. The purpose of the invention is to eliminate the drawbacks of the prior art.

[0005]

Means for Solving the Problems To achieve the above object, the present invention removably secures a frame-shaped subframe for mounting a gate around a skylight glass part and a windshield glass part of a cab of a construction machine. It is characterized in that a skylight net guard and a front window net guard are mounted on it.

[0006]

[Action]

 According to the above configuration, the subframe restrains the skylight portion and the front window portion, so that the rolling displacement of the cab is suppressed.

[0007]

【Example】

 FIG. 1 is an exploded perspective view showing an embodiment of a cab guard mounting device according to the present invention.

The present invention will be described below with reference to the embodiment shown in FIG. The cab guard mounting device according to the present invention detachably attaches a frame-shaped gate mounting subframe 4 around the skylight glass part 2 and the front windshield part 3 of the cab 1 of the construction machine. A skylight net guard 5 and a front window net guard 6 are mounted on it.

The cab 1 is provided with a skylight glass part 2 in the front part of the ceiling, and a front windshield part 3 is provided in the front part from the top to the bottom over the entire width. A plurality of screw seats 1a for attaching the subframe 4 are fixed to the circumference of the glass portions 2 and 3. The sub-frame 4 is integrally framed around the skylight glass part 2 and the front windshield part 3 with a flat plate or a pipe to have a frame shape, and is bent along the shape of the cab 1. Seats 7 having bolt holes 8 for connecting with the cab 1 are fixed to a plurality of places around the lower side by welding or the like. A plurality of screw seats 9 for attaching the skylight net guard 5 and the front window net guard 6 are fixed to the upper surface thereof. The skylight net guard 5 is composed of a frame 10 and a net 11, and the front side thereof is bent to match the shape of the subframe 4. The front window net guard 6 is composed of a frame 12 and a net 13 like the skylight net guard 5, and both net guards 5 and 6 have a seat 7 of the sub-frame 4 on their respective frames 10 and 12. Bolt holes 14 are provided at four corners of the surface corresponding to the above. In the figure, 15 and 16 are mounting bolts, respectively.

Next, the operation will be described. As described above, the sub-frame 4 is integrated from the front window portion to the ceiling portion. When this is fastened to the cab 1 with the bolt 16, the net guard attachment portion of the cab 1 is restrained. Therefore, the weight load due to the attachment of the net guards 5 and 6 is also received by the subframe 4, and the rolling load of the cab 1 is reduced. The net guards 5 and 6 are respectively attached by tightening the bolts 15 so that the bolt holes 14 are overlapped with the screw seats 9 of the subframe 4, but the net guards 5 and 6 themselves. Also, cracks can be prevented by reducing the displacement load.

[0011]

[Effect of device]

 As described above, according to the present invention, a frame-shaped subframe for mounting a gate is detachably fixed around the skylight glass part and the front window glass part of the cab of the construction machine, and the skylight net girder is mounted thereon. Since the window and front window netguards are attached, there are cab rolling, deterioration of riding comfort, deterioration of cab durability, cracks in the netguard, etc. that have occurred when the subframe type netguard was installed. In addition to being able to prevent this, it is expected that the net guard will be lighter in weight, and the net desorption and window glass cleaning work load will be reduced.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a cab guard attachment device according to the present invention.

FIG. 2 is an exploded perspective view showing an example of a conventional cab guard mounting device.

FIG. 3 is a front view showing a problem when a conventional cab is attached to a guard.

[Explanation of symbols]

 1 cab 2 skylight glass part 3 front windshield part 4 subframe for guard mounting 5 front window nest guard 6 skylight net guard

Claims (1)

[Scope of utility model registration request] Claims: 1. A frame-shaped subframe for mounting a gate is detachably fixed around a skylight glass part and a windshield glass part of a cab of a construction machine, and a skylight net guard and a windscreen net guard are further mounted thereon. -A cab girder mounting device characterized in that a hood is attached.