JP2010083360A - Blind device for construction machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a blind device for a construction machine for obtaining visibility and a light shielding property corresponding to each operator. <P>SOLUTION: The blind device 20 for the construction machine 1 attached to the outer face side of a side window and/or a rear window of a cab 6 includes a cab attachment member 23 attached facing both ends edges of the side window and/or the rear window of the cab 6, a plurality of flat plate-type sun visors 21 disposed between the cab attachment members 23 to separate in a vertical direction and inclined at the predetermined angle, a sun visor supporting member 22 stuck to both the ends in the longitudinal direction of each sun visor 21, and a tightening means for tightening a plurality of the sun visor supporting members 22 to the cab attachment member 23 to be inclined in an outer face direction of the side window and/or the rear window of the cab 6. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a blind device for a construction machine provided on a cab window glass of a construction machine such as a hydraulic excavator.

  In general, in a construction machine such as a hydraulic excavator, in order to secure the operator's field of view and to block the incidence of sunlight into the cab, at least the required distance in the vertical direction on the outer surface side of the window glass on the left and right side portions of the cab. There are those provided with a blind having a plurality of sunscreens spaced apart from each other (see, for example, Patent Document 1).

Japanese Utility Model Publication No. 4-138458

  In large construction machines such as hydraulic excavators, in order to improve the operation efficiency, a method in which an operator stays in the cab is adopted so that the operation can be resumed immediately even when the construction machine is not in operation. Yes.

  For this reason, a cab in a large construction machine has a larger space than a cab of a construction machine having a smaller excavation capacity. Along with this, the window glass of the cab is also enlarged, so that the amount of incident sunlight and the incident angle in the cab in the summer and winter vary.

  Moreover, since the operator who operates a construction machine in a cab has a height, when the operator sits on the driver's seat in the cab, the visibility position of each operator changes.

  Furthermore, since the installation height of the cab differs for each model of construction machine, the visual field position of each operator changes for each model. Thus, when the visual field position changes, the part that can be visually recognized by the operator changes.

  On the other hand, the site where operator visibility is required varies depending on, for example, the type of dump truck to be combined during excavation and the operating location. Further, the degree of feeling dazzling with respect to the incidence of sunlight varies depending on each operator.

  For this reason, in the above-described conventional blind device, the visibility of each operator is not ensured, the incident amount of sunlight into the cab and the fluctuation of the incident angle are not adequately handled, and the operator's work efficiency is significantly reduced. .

  The present invention has been made based on the above-described matters, and an object of the present invention is to provide a blind device for a construction machine that can ensure visibility and light shielding performance corresponding to each operator.

  (1) In order to achieve the above object, the present invention provides a blind device for a construction machine, which is attached to an outer surface side of a side window and / or a rear window of a cab, and both edges of the side window and / or the rear window of the cab. A cab mounting member that is mounted facing the portion, a plurality of flat sunscreens that are spaced apart in the vertical direction between the cab mounting members and are inclined at a predetermined angle; and The sunscreen support member fixed to both ends of each sunscreen in the longitudinal direction and the plurality of sunscreen support members can be tilted toward the outer surface of the side window and / or the rear window of the cab. Fastening means for fastening to the cab mounting member is provided.

  (2) In the above (1), preferably, the fastening means is provided in the cab mounting member, a bracket having a bolt hole and a nut, an arc hole provided in the sunscreen support member, A bolt inserted into the arc hole and screwed into the nut through the bolt hole of the bracket is provided.

  (3) In the above (1) or (2), preferably, the sunscreen is fastened to the sunscreen support member so that the end thereof is movable in the short direction. .

  (4) In the above (1) or (2), preferably, the sunscreen has a first sunscreen whose end is fastened to the sunscreen support member, and the first sunscreen. It is assumed that a second sunscreen is provided so as to be movable in the short direction of the 1 sunscreen.

  (5) In the above (3), preferably, the sunscreen is fastened to the sunscreen support member via a vibration isolation member.

  (6) In the above (4), preferably, the sunscreen is configured such that the second sunscreen is placed on the first sunscreen, and the anti-vibration member is interposed therebetween. It is assumed that it is fastened to the sunshade support member.

  (7) In any one of the above (1) to (6), it is preferable that the cab mounting member is arranged in a forwardly inclined form in the cab side view.

  According to the blind device for a construction machine of the present invention, the inclination angle of each sunshade can be adjusted individually and easily, so that it is possible to secure the side view and the rear view of the operator, and into the cab. The incident of sunlight can be blocked. As a result, it is possible to improve the light shielding property and visibility corresponding to each operator, and to improve the work efficiency.

Hereinafter, embodiments of a blind device for a construction machine according to the present invention will be described with reference to the drawings.
FIG. 1 is a side view showing the overall structure of a large hydraulic excavator to which a blind device for a construction machine according to the present invention is applied. In FIG. 1, reference numeral 1 denotes a large hydraulic excavator as a construction machine. 2 is a traveling body, 3 is an endless track traveling device installed on both the left and right sides of the traveling body, 4 is a revolving body mounted on the upper part of the traveling body 2 so as to be able to swivel, and 5 is a front portion on the revolving body 4. A multi-joint type work device that is pivotably mounted in the vertical direction, 6 is a cab disposed on the left front side of the revolving body 4, and 7 is disposed below the cab 6 and is provided on a control panel (see FIG. (Not shown) and the like. 8 is a machine room which is arranged on the revolving body 4 and accommodates various devices, 9 is a passage which is provided on the revolving body 4 and allows operators and workers to pass through. It is a counterweight attached to the rear part on the revolving structure 4.

  The cab 6 described above is formed in a box shape from a front surface portion 11 having a front window, a rear surface portion 12 having a rear window, left and right side surface portions 13 having left and right side windows, and a top surface portion 14 covering these upper surface sides. The cab box 15, a driver seat (not shown) provided in the cab box 15, and an operating device (not shown) provided around the driver seat.

  Next, a first embodiment of a blind device for a construction machine according to the present invention provided in the above-described cab 6 will be described with reference to FIGS. FIG. 2 is a side view of a cab provided with a first embodiment of a blind device for a construction machine according to the present invention, and FIG. 3 is a cross-sectional view of the blind device for a construction machine as viewed from the direction of arrows III-III in FIG. FIG. 4 is a front view of a sunshade support bracket constituting the first embodiment of the blind device for a construction machine according to the present invention, and FIG. 5 is a first view of the blind device for the construction machine according to the present invention. FIG. 6 is a side view of a sunshade support bracket constituting the embodiment, and FIG. 6 is a front view of the cab mounting bracket constituting the first embodiment of the blind device for a construction machine according to the present invention.

  In FIG. 2, the blind device 20 is provided on the outer surface side of the side window 16 of the left side surface portion 13 of the cab 6 and blocks sunlight that enters the cab 6 from the side window 16.

  As shown in FIG. 2 and FIG. 3, the blind device 20 is separated from each other at predetermined intervals in the vertical direction and is provided with flat sunscreens 21, 21,. Sunshade support brackets 22 and 22 as sunscreen support members that are fastened to both ends of the sunscreen 21 and change the inclination angle of the sunscreen 21, and the sunscreens 21. The cab 6 is fastened to the sunscreen support bracket 22 at a mounting angle with a predetermined inclination angle, and the cab 6 is connected to the cab 6 via bolts or the like so that the sunscreen 21 is arranged on the outer surface side of the side window 16. The cab mounting brackets 23 and 23 having an L-shaped cross section as cab mounting members fixed to the outer surface side of the side surface portion 13 are generally configured.

  As shown in FIGS. 4 and 5, the sunshade support bracket 22 includes a mounting member 22 a made of a substantially long rectangular plate-shaped steel plate, and a date erected vertically on the surface portion of the mounting member 22 a. It is comprised from the board support member 22b. In the vicinity of both ends in the longitudinal direction of the mounting member 22a and in the fan shape centering on the center point C of the surface portion of the mounting member 22a, there are arc holes 22c, 22c is formed. Note that the arc hole 22c in the present embodiment is formed in a portion corresponding to an arc having a central angle β of, for example, 20 °.

  The awning plate support member 22b is made of a substantially long rectangular flat plate-shaped steel plate, and the direction in which the edge on one side of the long side is a predetermined angle α with respect to the axis line l in the short direction of the mounting member 22a. It is arrange | positioned and it adheres to the surface part of the attachment member 22a. Sunshade mounting holes 22d and 22d are provided in the vicinity of the tip portion on the other side of the long side of the sunscreen support member 22b. A center point of the sunshade mounting hole 22d and a nut 22e that matches the center point are projection welded to the lower surface side of the sunscreen support member 22b. In the present embodiment, α is formed at 45 °, for example.

  As shown in FIGS. 2, 3, and 6, the cab mounting bracket 23 includes an L-shaped bracket main body 23 a to which each sun protection plate 21 is attached via a sun protection plate mounting member 22. The bracket leg is fixed to both end portions (vertical end portions in FIG. 6) of the bracket body portion 23a, and the bracket device 20 is fixed to the side surface portion 13 of the cab 6 by inserting and tightening bolts into the mounting holes. And a bracket cover 27 having an L-shaped cross section that is attached to the long side of the L-shaped section of the bracket body 23a and covers the connecting portion between the sunshade mounting member 22 and the bracket body 23a. ing. The cab mounting bracket 4 in FIG. 6 shows a state in which the bracket cover 27 is removed.

  On the long side of the L-shaped section of the bracket body 23a, bracket mounting members 24, 24,. The bracket mounting member 24 is provided with bracket mounting holes 24 a, 24 a, and a center point of the bracket mounting hole 24 a and a nut 24 b that matches the center point are projection welded to the back surface side of the bracket mounting member 24. Has been.

  The bracket mounting member 24 as a bracket provided on the cab mounting bracket 23 as a cab mounting member and having a bracket mounting hole 24a and a nut 24b as bolt holes, and a sunscreen support member. The sunshade support bracket 22 is cabted by an arc hole 22c provided in the sunshade support bracket 22 and a bolt 28 inserted into the arc hole 22c and screwed into the nut 24b through the bracket mounting hole 24a. The fastening means for fastening to the cab mounting bracket 23 so as to be tiltable in the direction of the outer surface of the six side windows 16 is configured.

  Further, as shown in FIG. 2, the cab mounting bracket 23 is formed on the cab side surface 13 so as to be tilted forward in accordance with the inclination of the front end portion of the side window 16, and is attached to the cab side surface portion 13. It is also possible to form it in the form.

  Next, a method of fastening the sunshade 21, sunshade support bracket 22, and bracket mounting member 24 in the first embodiment of the above-described blind device for a construction machine according to the present invention will be described with reference to FIGS. 7 for explanation. FIG. 7 is a perspective view illustrating an assembled state of each member of the first embodiment of the blind device for a construction machine according to the present invention.

  First, in FIG. 3 and FIG. 7, the sunshade 21 and the sunshade support bracket 22 are fastened by attaching holes 21 a and 21 a provided in the vicinity of both ends of the sunshade 21. The sunshade 21 supports the sunscreen rubber 26 and the sunscreen so as to communicate with the sunscreen holes 22d and 22d of the sunscreen support member 22b via the antivibration rubber 26 as a member. It is placed on the member 22b.

  Next, the anti-vibration rubber 26 and the plate 25 are placed on the sunscreen 21 so that the respective mounting holes (not shown) communicate with the mounting holes 21a, 22d, etc., and the bolts 28, 28 are mounted. It is inserted into these mounting holes. The sunshade 21 is fastened to the sunshade support bracket 22 by tightening the bolts 28, 28 to the nuts 22e, 22e. Although FIG. 7 shows the right end of the sunscreen 21, the left end of the sunscreen 21 is configured similarly.

  The sunshade support bracket 22 and the bracket mounting member 24 are fastened by arranging the mounting member 22a so that the arc holes 22c and 22c communicate with the bracket mounting holes 24a and 24a of the bracket mounting member 24, and the bolts 28. , 28 are inserted into these mounting holes. The sunshade support bracket 22 is fastened to the bracket mounting member 24 by tightening the bolts 28, 28 to the nuts 24b, 24b.

Next, a method of adjusting the inclination angle of the sunshade 21 in the first embodiment of the above-described blind device for a construction machine according to the present invention will be described with reference to FIGS. 3, 4, and 7.
First, in FIGS. 3 and 7, the bolts 28 and 28 and the nuts 22e and 22e that fasten the bracket mounting member 24 and the sunshade support bracket 22 are loosened. As a result, the sunshade support bracket 22 is connected to the bracket mounting member 24 by the bolts 28 and 28 that communicate the arc holes 22c and 22c of the mounting member 22a with the bracket mounting holes 24a and 24a of the bracket mounting member 24. It will be pivotally supported.

  Next, the sunshade support bracket 22 is tilted by pulling the upper portion of the mounting member 22a toward the front side (right side in FIG. 3) and pushing the lower portion of the mounting member 22a toward the rear side (left side in FIG. 3). The inclination angle of the sunshade 21 can be increased. Here, the upper bolt 28 moves from the center of the upper arc hole 22c of the mounting member 22a to the back side (left side in FIG. 3), and the lower bolt 28 moves to the lower arc hole 22c of the mounting member 22a. From the center to the front side (right side in FIG. 3). In order to reduce the inclination angle of the sunshade 21, the bolt 28 may be moved in the opposite direction to the relationship between the bolt 28 and the arc hole 22c described above.

  By adjusting the upper and lower bolts 28, 28 to the nuts 22e, 22e at the desired inclination angle, the adjustment of the inclination angle of the corresponding sunscreen 21 is completed.

  As shown in FIG. 4, in the present embodiment, the mounting angle α of the sunshade support member 22b with respect to the axis l is 45 °, and the central angle β of the sector shape forming the arc hole 22c is 20 °. Therefore, the inclination angle of the sunscreen 2 determined by the inclination angle of the sunscreen support bracket 22 can be set to an arbitrary angle between a maximum of 55 ° and a minimum of 35 °.

  According to the above-described first embodiment of the blind device for a construction machine of the present invention, the inclination angle of each sunscreen 21 can be adjusted individually and easily. The field of view can be secured and the incidence of sunlight into the cab 6 can be blocked. As a result, it is possible to improve the light shielding property and visibility corresponding to each operator, and to improve the work efficiency. Moreover, the temperature rise in a cab is suppressed and the environment in a cab can be improved. Further, since the blind device can be made into a common part, it is not necessary to manufacture a blind device having a different form for each model of the construction machine. As a result, productivity can be improved.

  Further, according to the first embodiment of the blind device for a construction machine of the present invention, the nut is projection welded to the back surface of the mounting hole into which the bolt 28 is inserted, so that the bolt 28 can be easily tightened and unfastened. It can be done reliably. As a result, the inclination angle of the sunscreen 21 can be easily and reliably adjusted individually.

  In addition, according to the first embodiment of the blind device for a construction machine of the present invention, the anti-vibration rubber 26 and the plate as the anti-vibration member are used in fastening the sunscreen 21 and the sunscreen support bracket 22. By interposing 25, vibration resistance, strength, etc. equivalent to those of a conventional blind with a fixed inclination angle can be ensured. As a result, even if the inclination angle of the sunscreen 21 can be adjusted, the reliability of the function of the blind device 20 can be ensured.

  Next, a second embodiment of the blind device for a construction machine according to the present invention will be described with reference to FIGS. FIG. 8 is a cross-sectional view showing a second embodiment of the blind device for a construction machine according to the present invention, and FIG. 9 shows the assembled state of each member of the second embodiment of the blind device for a construction machine according to the present invention. It is a perspective view explaining. In FIGS. 8 and 9, the same reference numerals as those shown in FIGS. 1 to 7 are the same or corresponding parts, and the description thereof is omitted.

  In the present embodiment, as shown in FIG. 9, three attachment holes 21a are provided at both ends of the second sunscreen 21b. The second sunshade 21b and the sunscreen support bracket 22 are fastened with the vibration-proof rubber 26 provided by the middle mounting hole 21a and the mounting hole 21a at either end of the three mounting holes 21a. The second sunscreen 21b is placed on the anti-vibration rubber 26 and the sunscreen support member 22b so as to communicate with the sunscreen mounting holes 22d and 22d of the sunscreen support member 22b via It is done by placing it on. For this reason, the fastening of the second sunscreen 21b and the sunscreen support bracket 22 is performed when the collar portion of the second sunscreen 21b shown by the solid line in FIG. 8 can be selected when the collar portion of the second sunshade 21b indicated by the broken line 8 is contracted. That is, the second sunscreen 21b is fastened to the sunscreen support brackets 22 and 22 at both ends thereof so as to be movable in the short direction.

  According to the second embodiment of the blind device for a construction machine of the present invention, the same effect as that of the first embodiment described above can be obtained, and the collar portion of the second sunscreen 21b can be provided. It can be stretched or shrunk individually. As a result, for example, even when the angle of inclination of the second sunscreen 21b is reduced to improve visibility, the reduction of the light shielding property is suppressed by extending the collar portion of the part. Can do.

  Next, a third embodiment of the blind device for a construction machine according to the present invention will be described with reference to FIGS. FIG. 10 is a cross-sectional view showing a third embodiment of the blind device for a construction machine according to the present invention, and FIG. 11 shows the assembled state of each member of the third embodiment of the blind device for a construction machine according to the present invention. It is a perspective view explaining. In the following description, the same components as those in the first embodiment of the present invention described above are denoted by the same reference numerals, and description thereof is omitted.

  In the present embodiment, as shown in FIG. 10, the sunscreen 21 in the first embodiment (hereinafter referred to as the first sunscreen 21) and the second in the second embodiment. The sunshade plate 21b is arranged so as to overlap in the short direction. The first sunscreen 21, the second sunscreen 21 b, and the sunscreen support bracket 22 are fastened to both ends of the first sunscreen 21. The first sunshade 21 is connected to the vibration isolating rubber 26 so that the holes 21a and 21a communicate with the sunscreen attaching holes 22d and 22d of the sunscreen supporting member 22b through the antivibration rubber 26. It mounts on the sunshade support member 22b.

  Next, the middle mounting hole 21a and the mounting holes 21a at either end of the three mounting holes 21a of the second sunscreen 21b are the mounting holes 21a, 21a of the first sunscreen 21. The second sunscreen 21 b is placed on the first sunscreen 21 so as to communicate with the first sunscreen 21.

  Next, the anti-vibration rubber 26 and the plate 25 are placed on the second sunscreen 21b so that the respective mounting holes (not shown) communicate with the mounting holes 21a, 22d and the like. , 28 are inserted into these mounting holes. By fastening the bolts 28 and 28 to the nuts 22e and 22e, the first sunscreen 21 and the second sunscreen 21b are fastened to the sunscreen support bracket 22.

  In addition, the fastening between the second sunscreen 21b and the sunscreen support bracket 22 is performed when the collar portion of the second sunscreen 21b shown by the solid line in FIG. 10 is extended, and FIG. It is possible to select any one of the cases where the collar portion of the second sunscreen 21b indicated by the broken line is contracted.

  According to the third embodiment of the blind device for a construction machine of the present invention, the same effects as those of the first embodiment and the second embodiment described above can be obtained, and the first day can be obtained. Since the shading plate 21 and the second sunshading plate 21b overlap in the short direction, the collar portion of the sunshading plate becomes long and a high-strength sunshading plate is formed. As a result, the vibration resistance and strength of the blind device can be improved, and the reliability of the function of the blind device can be improved.

  In the embodiment of the present invention, the cab 6 of the large excavator has been described as an example of the cab 6 of the construction machine 1. However, the present invention is not limited to this. For example, the cab of another construction machine such as a hydraulic crane is used. It can also be applied to.

It is a side view showing the whole structure of the large sized hydraulic excavator to which the blind device of the construction machine of the present invention is applied. It is a side view of the cab provided with 1st Embodiment of the blind apparatus of the construction machine of this invention. It is sectional drawing which looked at the blind apparatus of the construction machine from the III-III arrow of FIG. It is a front view of the sunshade support bracket which comprises 1st Embodiment of the blind apparatus of the construction machine of this invention. It is a side view of the sunshade support bracket which comprises 1st Embodiment of the blind apparatus of the construction machine of this invention. It is a front view of the bracket for cab installation which comprises 1st Embodiment of the blind apparatus of the construction machine of this invention. It is a perspective view explaining the assembly state of each member in 1st Embodiment of the blind apparatus of the construction machine of this invention. It is sectional drawing which shows 2nd Embodiment of the blind apparatus of the construction machine of this invention. It is a perspective view explaining the assembly state of each member in 2nd Embodiment of the blind apparatus of the construction machine of this invention. It is sectional drawing which shows 3rd Embodiment of the blind apparatus of the construction machine of this invention. It is a perspective view explaining the assembly state of each member in 3rd Embodiment of the blind apparatus of the construction machine of this invention.

Explanation of symbols

1 construction machine 6 cab 20 blind device 21 sunscreen (first sunscreen)
21a Mounting hole 21b Second sun plate 22 Sun plate supporting bracket 22a Mounting member 22b Sun plate supporting member 22c Arc hole 22d Sun plate mounting hole 22e Nut 23 Cab mounting bracket 24 Bracket mounting Member 24a Bracket mounting hole 24b Nut 26 Anti-vibration rubber 28 Bolt

Claims (7)

In a blind device for a construction machine that is attached to a side window of a cab and / or an outer surface side of a rear window,
A cab mounting member that is mounted to face both side edges of the side window and / or the rear window of the cab;
A plurality of flat sunscreens spaced apart in the vertical direction between the cab mounting members and disposed at a predetermined angle;
A sunscreen support member fixed to both longitudinal ends of each sunscreen;
Fastening means for fastening the plurality of sunscreen support members to the cab mounting member so as to be tiltable toward the outer surface of the side window and / or rear window of the cab. Blind equipment for construction machinery. The blind device for a construction machine according to claim 1,
The fastening means is provided in the cab mounting member, has a bracket having a bolt hole and a nut, an arc hole provided in the sunscreen support member, and is inserted into the arc hole, and the bolt hole of the bracket A blind device for a construction machine, comprising: a bolt screwed into the nut. The blind device for a construction machine according to claim 1 or 2,
A blind device for a construction machine, wherein an end portion of the sunscreen is fastened to the sunscreen support member so as to be movable in a short direction. The blind device for a construction machine according to claim 1 or 2,
The sunscreen has a first sunscreen whose end is fastened to the sunscreen support member, and is movably stacked in a short direction of the first sunscreen. A blind device for a construction machine, comprising: a second sunshade provided. The blind device for a construction machine according to claim 3, wherein the sunscreen is fastened to the sunscreen support member via a vibration isolating member. The blind device for a construction machine according to claim 4, wherein the sunscreen is configured such that the second sunscreen is placed on the first sunscreen, and the anti-vibration member is used to insert the second sunscreen. A blind device for a construction machine, which is fastened to a sunscreen support member. The blind device for a construction machine according to any one of claims 1 to 6, wherein the cab mounting member is arranged in a forwardly inclined form as viewed from the side of the cab.

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