JPH0660651U - Guard mounting structure - Google Patents

Abstract

(57) [Abstract] [Purpose] In the conventional mounting structure for the guard that covers the outer peripheral surface of the vehicle body of the construction machine, the head of the bolt is provided so as to project from the upper surface of the guard, so that the construction machine looks good from a close view. Was bad. In addition, when the driver climbed up the upper surface of the guard for maintenance work or the like, the protruding bolt head might trip over, which was not safe in terms of safety. This problem is solved. [Constitution] In the guard mounting structure of the present invention, the bolt tightening seat position of the guard is a recessed position inside the outer peripheral surface of the guard, and the inner peripheral surface of the recessed portion is tapered inward from the outer side. It was formed by a press drawing so as to form a taper, and a bolt hole was opened at the bottom of the recessed portion, and the bolt was tightened to the bolt hole and the screw hole of the vehicle body side stay.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a structure for mounting a guard on the outer peripheral surface of a construction machine such as a hydraulic excavator or a work vehicle.

[0002]

[Prior art]

 FIG. 5 is a side view of a conventional hydraulic excavator 1. In the figure, 2 is an upper revolving structure which is a vehicle body, 3 is a guard covering the outer peripheral part of the upper revolving structure 2, 4 is an engine upper guard, 5 is a cab, 6 is a counterweight, 7 is a fixed guard 3 The bolt, 8 is the undercarriage. FIG. 6 is a perspective view of a main part of the upper swing body 2 in FIG. FIG. 7 is a fragmentary sectional view showing the mounting structure of the guard 3 as seen from AA in FIG. In the figure, 9 is a stay fixed to the inside of the upper swing body 2, 10 is a nut fixed to the lower surface of the mounting seat of the stay 9, 11 is a plate washer for the bolt (7), and 12 is a spring washer. As shown in FIGS. 5 to 7, the guard 3 covering the outer peripheral portion of the upper swing body 2 is formed of a plurality of thin steel plates, and is fastened with a bolt 7 to the stay 9 inside the upper swing body 2. It is fixed.

[0003]

[Problems to be solved by the device]

 In the mounting structure of the guard 3 of the prior art, the head a of the bolt 7 (shown in FIG. 7) is provided so as to project from the upper surface of the guard 3 by the dimension H1, so that the upper surface side of the upper swing body 2 feels messy. , The excavator 1 looked good near me. Also, when the driver climbs on the upper surface of the guard for engine maintenance work or the like, the bolt head protruding from the upper surface of the guard may trip, which is not safe. The present invention aims to solve the above problems.

[0004]

[Means for Solving the Problems]

 According to the mounting structure of the present invention, a guard is formed by a plurality of plate members along the outer peripheral surface of the vehicle body, and the stay inside the guard body is tightened with a bolt. It is a guard mounting structure that does not protrude from the outer peripheral surface of the guard, and the bolt tightening seat position of the guard is a recessed position inside the outer peripheral surface of the guard, and the inner peripheral surface of the recessed part Is formed by press drawing so that it becomes a taper that tapers from the outside to the inside, and a bolt hole is opened in the bottom of the recessed recess, and the bolt hole and the screw hole of the body side stay are bolted. Configured to tighten.

[0005]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a side view of essential parts of a hydraulic excavator 13 having a guard mounting structure according to the present invention. In the figure, 14 is an upper swing body, 15 is a guard covering the outer peripheral portion of the upper swing body 14, 16 is a cover, and 17 is a counterweight. FIG. 2 is a plan view of an essential part of the upper swing body 14 in FIG. In the figure, 15 is a plurality of guards covering the upper surface of the upper revolving structure 14, and 18 is a bolt for fastening the guard 15 to the upper surface of the upper revolving structure 14. FIG. 3 is a cross-sectional view of the main part around the bolt 18 as seen from BB in FIG. In the figure, 19 is a stay fixed to the inside of the upper revolving structure 14, 20 is a nut fixed to the lower surface of the mounting seat of the stay 19, 21 is a plate washer for the bolt (18), and 22 is a spring washer. . FIG. 4 is a plan view seen from C of FIG.

Next, the mounting structure of the guard 15 of the present invention will be described with reference to FIGS. In the present invention, the position of the bolt mounting seat (reference numeral 23 in FIG. 3) of the guard 15 is a recessed position which is inward of the outer peripheral surface of the guard 15 by a dimension H2, and the inner peripheral surface of the recessed portion (see FIG. 3). The reference numeral 24) indicates a taper tapering from the outer side toward the inner side (tapered at an angle a as shown in FIG. 3) by press drawing, and the bolt hole at the bottom of the recessed portion is formed. 25 and the screw hole 26 of the stay 19 on the vehicle body side (which is the screw hole of the nut 20 fixed to the lower surface of the mounting seat of the stay 19).

Next, the operation of the mounting structure of the guard 15 will be described. Since the bolt mounting seat (23) position of the guard 15 is formed so as to be recessed inward by a dimension H2 from the outer peripheral surface of the guard 15, when the bolt 18 is tightened to fix the guard 15, the head of the bolt 18 is shown in FIG. It is completely invisible from the side as shown in. Although not shown, a lid member that is flush with the outer peripheral surface of the guard 15 is fitted on the upper portion of the recessed portion where the bolt 18 is tightened to prevent dirt and sand from entering. You can Therefore, since there is no protruding bolt head on the outer peripheral surface of the upper revolving structure 14, the hydraulic excavator 13 looks good at a close view. Further, when the driver climbs on the upper surface of the guard (15) for maintenance work or the like, the work can be safely performed without tripping over the head of the bolt 18.

[0008]

[Effect of device]

 In the present invention, the bolt tightening seat position of the guard is recessed inward from the outer peripheral surface of the guard, and the inner peripheral surface of the recessed portion is pressed so as to taper from the outer side toward the inner side. It was formed by drawing, and a bolt hole was opened at the bottom of the recessed portion, and the bolt was tightened to the bolt hole and the screw hole of the stay on the vehicle body side. As a result, the head of the bolt that secures the guard does not protrude beyond the upper surface of the guard, and the upper surface of the upper revolving structure feels neat and improves the aesthetics of the hydraulic excavator seen in the vicinity. Also, when the driver goes up to the upper surface of the guard for maintenance work or the like, he / she does not trip over the bolt head, so the safety of the work can be improved.

[Brief description of drawings]

FIG. 1 is a side view of an essential part of a hydraulic excavator having a guard mounting structure according to the present invention.

FIG. 2 is a plan view of a main part of an upper swing body in FIG.

FIG. 3 is a cross-sectional view of a main part around a bolt viewed from BB in FIG.

FIG. 4 is a plan view seen from C in FIG.

FIG. 5 is a side view of a conventional hydraulic excavator.

FIG. 6 is a perspective view of a main part of the upper swing body in FIG.

FIG. 7 is a cross-sectional view of essential parts showing a conventional guard mounting structure viewed from AA in FIG.

[Explanation of symbols]

 1,13 Hydraulic excavator 2,14 Upper revolving structure 3,15 Guard 7,18 Bolt 9,19 Stay 23 Bolt mounting seat 24 Inner peripheral surface 25 Bolt hole

Claims (1)

[Scope of utility model registration request] 1. A guard is formed of a plurality of plate members along the outer peripheral surface of a vehicle body, and the guard is fastened and fixed to a stay inside the vehicle body with a bolt, and the top of the bolt is a guard. The guard mounting structure is designed so as not to protrude from the outer peripheral surface of the guard, and the bolt tightening seat position of the guard is a recessed position inside the outer peripheral surface of the guard, and the inner peripheral surface of the recessed part is It is formed by press drawing so that it becomes a taper toward the inside, and a bolt hole is opened in the bottom of the recessed part, and the bolt is tightened in the bolt hole and the screw hole of the body side stay. The mounting structure for the guard is characterized in that