JPH0594355U - Construction machinery cabin - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention relates to the cabin of construction machinery such as power shovels and backhoes, which has a characteristic front glass mounting structure, has a good field of view, and enables direct visual confirmation of the excavation state from the cab. It also aims to provide a cabin with good ventilation. [Construction] The cabin 1 is provided with a frame frame 7 in which an upper side 8 and a lower side 9 are bent in the same plane shape, and two side grooves 10 are provided with two grooves 12 and 13 on the front side. An upper curved glass 20 having an upper end fitted to an upper side 8 and a lower end extending to a substantially middle position of the frame is vertically movably attached to an upper part of the frame frame 7, and a lower end is fitted to a lower side 9 and an upper end of the lower part of the frame frame 7. A lower curved glass 30 extending to a position overlapping with the upper curved glass 20 is mounted so as to be vertically movable and fixable at a desired position. In this cabin, the driver's field of view diagonally forward is not obstructed, and the field of view curved glass 20, 30 can be opened to ensure good field of view and ventilation.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cabin of a construction machine such as a power shovel or a backhoe, and particularly to a cabin characterized by a front glass mounting structure arranged in the front.

[0002]

[Prior Art]

 The cabin of construction machinery is required to have a small turning radius and a large internal space. As a cabin satisfying such demands, the planar shape of the side wall is an arc or polygon, and the center of the arc or polygon is made to coincide with the axis of the center joint connecting the traveling device and the upper swing frame. Is good.

FIG. 7 and FIG. 9 show the structure of a conventional cabin. In the cabin shown in FIG. 7, six panel plates are connected to each other so that the left side wall is polygonal. As shown in FIG. 8, a column is erected at each connecting portion. An upper flat glass 51 and a lower flat glass 52 are vertically slidably mounted on a frame frame 7 mounted in the opening 6 of the front panel 4. Reference numeral 53 is a locking tool mounted on the upper flat glass 51, and 54 is a locking tool mounted on the lower flat glass 52. An elongated side surface glass 57 is mounted on a front left side panel 56 adjacent to the front panel 4 via a support column 55 via a rubber packing 61 to secure a field of view diagonally forward of the driver's seat 58.

The cabin of FIG. 9 has five panel plates connected to each other to form a polygonal left side wall. The front panel 4 and the left side panel 56 are integrally formed by bending steel plates in the vertical direction. The curved glass 59 bent in the same shape as the planar shape of the panel is attached to the opening 6 provided over both panels via the rubber packing 60.

[0005]

[Problems to be Solved by the Invention] Since the former cabin can be opened and closed by lowering the upper flat glass 51, when the excavation work with a large depth is performed, the operator can get out of the cab and directly see the excavation state. It is convenient because it can be done. It also has the advantage of being able to adequately ventilate the interior of the cabin. However, there is a drawback that the field of view is blocked by the connecting portion between the front panel and the left side panel, and it is necessary to provide a space for installing the support 55.

The latter cabin can secure a wide field of view and does not need to provide a space for installing the pillars 55, but since the curved glass 59 cannot be opened and closed, the operator can get out of the cab and directly see the excavation state. However, there is a drawback that it is not possible to do so and that separate ventilation means must be provided.

An object of the present invention is to improve the drawbacks of the conventional cabin, and it is an object of the present invention to provide a cabin that has a good field of view and can directly see the excavation state from the operator's cab.

[0008]

[Means for Solving the Problems]

 In the cabin 1 of the present invention, an upper side 8 and a lower side 9 are bent in the same plane in front of the cabin 1, and a frame frame 7 having two grooves 12 and 13 on both side sides 10 is arranged. ing. An upper curved glass 20 having an upper end fitted to an upper side 8 and a lower end extending to a substantially middle position of the frame is mounted on the upper part of the frame 7 so as to be vertically movable. A lower curved glass 30 having a lower end fitted to a lower side 9 and an upper end extending to a position overlapping the upper curved glass 20 is vertically movably mounted and fixed at a desired position on the lower portion of the frame 7.

[0009]

[Action]

 In the cabin 1 of the present invention, the upper curved glass 20 can be moved down to get out of the driver's seat and the excavation state can be directly viewed, and the ventilation can be sufficiently performed. By moving the lower curved glass 30 upward and fixing it at a desired position, the position and state of the civil engineering equipment such as the bucket, breaker, and crusher can be visually recognized while sitting in the driver's seat, and the operability is improved. be able to. In addition, since there is nothing that obstructs the view from the front to the left, it is possible to perform civil engineering work more smoothly and safely.

[0010]

【Example】

 1 to 6 show an embodiment of the present invention for a cabin of a power shovel. As shown in FIGS. 1 and 2, a cabin 1 of the present invention has an arc-shaped left side panel 2 having a center joint P as a center joint connecting a traveling device of a power shovel and an upper swing frame. There is. At the center of the panel 2, there is provided a sliding door 3 that opens and closes an opening for a driver to enter and exit. The front panel 4 extends from the front portion of the left side panel 2 in a slightly curved shape and extends linearly, and is connected to a right side panel 5 provided on the side of the pivot portion of the boom. No support pillars are erected from the front panel 4 to the front part of the left side panel 2, and the opening 6 of the front panel extends to the front part of the left side panel. The frame 7 is attached.

As shown in FIG. 3, the frame frame 7 has a rectangular front shape, an upper side 8 and a lower side 9 thereof are bent in a flat V shape, and a side connected to the left side panel 2 That is, the side edge 10 on the right side of the drawing is retracted to the rear side of the paper surface. A mounting flange 11 is provided on the outer periphery of the frame 7, and two grooves 12 and 13 are provided on the inner peripheral surface of the frame. The outer groove 12 is provided on the entire inner circumference of the frame frame, and the inner (driver seat side) groove 13 is provided only on both sides 10 and the lower side 9 of the frame frame, and on the remaining upper side. Is provided with a horizontal plate 18. Therefore, the cross section of the frame 7 has a horizontal h-shape on the upper side 8 and a horizontal E-shape on both sides 10, 10 and the lower side 9. As shown in FIGS. 4 and 6, U-shaped rubber packings 16 and 17 each having folding pieces 14 and 15 at one end are housed in both grooves 12 and 13, and a horizontal plate 18 has a bracket 27 to be described later. It is hanging.

On the upper part of the frame 7, an upper curved glass 20 which can be vertically slid in an outer groove 12 via a rubber packing 16 is mounted. The planar shape of this glass is the same as that of the groove 12 on the outer side of the frame frame 7, the thickness thereof is narrower than the slit width of the rubber packing 16, and the folded piece 14 is loosely pressed to the opposite side. This rubber packing not only prevents the glass 20 from rattling due to vibrations acting on the cabin 1 during civil engineering work, but also supports the glass 20 so that the glass 20 can move up and down smoothly. Locking tools 21 are screwed onto the upper curved glass 20 at two upper positions with screws 22. In this locking tool 21, a lever 25 having a hook 24 at its tip is swingably provided on the upper surface of a gripping piece 23 extending inward. The bracket 27 of the horizontal plate 18 is provided with an engagement hole 26 at a position facing the hook 24, and the hook 24 is locked in the engagement hole 26 to fix the upper curved glass 20. It suffices if the upper curved glass 20 can be fully closed or fully opened, and the lower limit position thereof is regulated by the stubber 29 shown in FIG.

At the lower part of the frame 7, a lower curved glass 30 is mounted in the inner groove 13 via a rubber packing 17 so as to be vertically movable. The planar shape of this glass is the same as the groove of the lower side 9 of the frame, the thickness of which is narrower than the slit width of the rubber packing 17, and the folded piece 15 presses the opposite side loosely. The lower bent glass 30 is provided with positioning tools 31 on both sides of the lower part thereof, and the positioning tool 31 has a rod 33 protruding and retracted laterally by a lever 32, and a fitting having substantially the same diameter as the rod 33. A receiving plate 35 having holes 34 arranged at a constant pitch is additionally provided on the inner side of both sides of the frame 7. The driver operates the lever 32 of the positioning tool to move the lower curved surface glass 30 to a desired position and fit and fix the rod 33 in the fitting hole 34.

The lower part of the upper curved glass 30 partially overlaps with the upper part of the lower curved glass 30, and a cross beam 41 is attached to the upper end of the lower curved glass 30 via a rubber packing 40. A sealing material 42 is mounted on the front surface of the cross girder 41, and the tip side of the sealing material 42 contacts the back surface of the upper curved glass 20 to block the inside and the outside of the cabin 1, and the It prevents the two glasses 20, 30 from colliding due to vibration or vertical movement.

[0015]

[Effect of the device]

 In the cabin of the present invention, a bent frame glass which is divided into two vertically is provided on a frame frame provided at the front so that the glass can be slid up and down. It can be ventilated. By moving the lower glass up and fixing it at the desired position, the position and state of work devices such as buckets, breakers, and crushers can be visually confirmed while sitting in the driver's seat, improving operability. . In addition, since there is nothing that obstructs the view from the front to the diagonal sides, civil engineering work can be performed more smoothly and safely.

[Brief description of drawings]

FIG. 1 is a sectional plan view of a cabin of a construction machine.

[Fig. 2] Side view of the cabin of the construction machine

FIG. 3 is a front view of a frame frame.

4 is an end view of part A of FIG.

5 is an end view of part B of FIG.

FIG. 6 is an end view of part C of FIG.

FIG. 7 is a perspective view of a first conventional example.

8 is a cross-sectional view of FIG.

FIG. 9 is a perspective view of a second conventional example.

10 is a cross-sectional view of FIG.

[Explanation of symbols]

 7 Frame Frame 8 Upper Side 9 Lower Side 10 Side Side 12 Groove (Outside) 13 Groove (Inside) 20 Upper Curved Glass 30 Lower Curved Crow

Claims (1)

[Scope of utility model registration request] 1. The upper side (8) and the lower side (9) are bent into substantially the same plane shape, and the two side grooves (12), (1) are formed on both side sides (9).
The frame (7) with 3) is arranged in the front,
An upper curved glass (20) is attached to the upper part of this frame (7) so that the upper end is fitted to the upper side (8) and the lower end extends to approximately the middle position of the frame so that it can move up and down.
At the lower part of (7), a lower curved glass (30) whose lower end is fitted to the lower side (9) and whose upper end extends to a position where it overlaps with the upper curved glass (20) can be moved vertically and fixed at a desired position. The cabin of the construction machine that is being used.