JP2008143251A - Cab roof structure body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cab roof structure body suitable for additionally mounting a heat insulating structure thereon. <P>SOLUTION: A hollow long member 13 having an inverted U cross section is fixed on the cab roof structure body 12 by welding. A heat insulating board 16 and a rib material 17 welded on the back surface of the heat insulating board 16 are fastened and fixed to the hollow long member 13 by means of a back side nut 14 welded on the upper inside surface of the hollow long member 13 and a bolt 15 screwed into the back side nut 14. A heat insulating material 19 attached to the back surface of the heat insulating board 16 and the rib material 17 via a double coated adhesive tape 18 is arranged between the cab roof structure body 12 and the rib material 17. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a cab roof structure provided with a heat shield.

A cab roof member of a conventional work machine is formed into a panel having a required size and shape by foaming a plastic material as a roof member, and having a required thickness (foam) (base material layer). A net or cloth made of high-strength organic fibers is included as a reinforcing material, and the periphery is flattened according to the position of the coupling part with the cab frame, and nuts are embedded in the coupling part at multiple locations. (For example, see Patent Document 1).
JP 2004-322894 A (page 5, FIG. 2)

  The cab roof member having such a structure is not suitable for an additional installation as necessary in an existing cab roof structure.

  For example, in the articulated dump truck 1 shown in FIG. 4, the front vehicle body 5 having the front wheel 4 is bent in a horizontal direction via a bending shaft (not shown) with respect to the rear vehicle body 3 having the rear wheel 2. Since it is connected so as to be able to make a smaller turn than a normal dump truck, it is suitable for transport work in a tunnel, so the roof structure of the cab 6 installed on the front body 5 of this articulated dump truck 1 is Insulation against direct sunlight is not considered.

  However, there are cases where such an articulated dump truck 1 is used for transporting work outside the tunnel. In this case, the roof 7 of the cab 6 is exposed to direct sunlight and heated by the sunlight, so that the temperature inside the cab 6 is increased. Therefore, it is necessary to additionally install a heat insulating structure on the roof 7 of the cab 6 as necessary.

  This invention is made | formed in view of such a point, and it aims at providing the cab roof structure suitable when installing a heat insulation structure additionally.

  The invention described in claim 1 includes a cab roof main body, a mounting member fixed on the cab roof main body, a heat shield fixed to the mounting member, the heat shield and the cab roof main body. It is a cab roof structure provided with the heat insulating material provided in between.

  According to a second aspect of the present invention, the mounting member in the cab roof structure according to the first aspect is a hollow long member having an opening at both ends arranged along the vehicle traveling direction.

  According to a third aspect of the present invention, in the cab roof structure according to the second aspect, disposed on the back surface of the heat shield plate along the direction intersecting the hollow long member disposed along the vehicle traveling direction. It was provided with the reinforced member made.

  According to the invention described in claim 1, a heat shield plate is fixed on the cab roof body via an attachment member, and a heat insulating material is provided between the heat shield plate and the cab roof body. A heat shield and a heat insulating material can be easily added to the roof main body, and a cab roof structure suitable for the case of additionally installing a heat insulating structure later can be provided.

  According to the second aspect of the present invention, the air is moved in the hollow long member that is open at both ends and arranged in the vehicle traveling direction, so that the cab roof is separated from the heat shield plate through the hollow long member. The amount of heat conducted to the main body can be suppressed, and the heat insulating effect by the heat insulating material can be enhanced.

  According to the invention described in claim 3, the hollow long member fixed on the cab roof body and the reinforcing member disposed on the back surface of the heat shield plate are disposed in the intersecting direction. The strength of the cab roof structure formed from the cab roof body to the heat shield plate can be improved.

  Hereinafter, the present invention will be described in detail with reference to an embodiment shown in FIGS. An example in which the cab roof structure 11 is applied to the roof 7 of the cab 6 of the articulated dump truck 1 shown in FIG. 4 will be described.

  As shown in FIG. 1, a cab roof structure 11 has a hollow long member 13 as a mounting member having a reverse concave cross section fixed on a cab roof main body 12 by welding. By means of a back nut 14 welded to the inner surface and a bolt 15 screwed to the back nut 14, a heat shield plate 16 and a rib member 17 as a reinforcing member welded to the back surface of the heat shield plate 16 are provided. The heat insulating material 19 fastened and fixed to the hollow long member 13 and attached to the back surface of the heat shield plate 16 and the rib material 17 via the double-sided adhesive tape 18 is sandwiched between the cab roof body 12 and the Has been.

  The cab roof body 12, the heat shield plate 16, and the rib material 17 are formed using, for example, an iron plate or a steel plate, the hollow long member 13 is formed using, for example, an angle material formed into a concave shape, and the heat insulating material 19 is For example, a molded product such as urethane foam is used.

  As shown in FIG. 2, the hollow long member 13 in the cab roof structure 11 is a mounting base member that is open at both ends and arranged in parallel along the vehicle traveling direction. Bolt insertion holes 21 drilled in a plurality of positions of the scale member 13 and bolt insertion holes 22 and 23 drilled in the heat shield plate 16 and the rib member 17 are aligned, and the bolt 15 is inserted into these. The

  Furthermore, a plurality of rib members 17 are arranged in parallel on the back surface of the heat shield plate 16 along the left-right direction intersecting the plurality of hollow long members 13 arranged along the vehicle traveling direction (front-rear direction). The ribs 17 are provided with inclined portions 26 between the upper surface portion 24 and the side surface portions 25 at the left and right end portions of each rib member 17, and these inclined portions 26 are heat shield plates. The upper surface portion 24 and the side surface portion 25 of the rib member 17 are supported between the back surface of the upper plate portion 27 and the rear surface of the side plate portion 28 so that the back surface and the side plate portion of the upper plate portion 27 of the heat shield plate 16 are supported. It is welded to the back surface of 28, for example, skip welding.

  As shown in FIG. 3, the heat shield plate 16 is installed in a range that does not interfere with the illuminating lamp 31 and the warning lamp 32 installed at the foremost part on the cab roof body 12.

  Next, the function and effect of the illustrated embodiment will be described.

  When this cab roof structure 11 is applied to the roof 7 of the cab 6 of the articulated dump truck 1, the temperature rise in the cab due to direct sunlight is blocked even when the articulated dump truck 1 is operated outside the tunnel. This is prevented by the hot plate 16 and the heat insulating material 19.

  At this time, since the plurality of hollow long members 13 are arranged along the vehicle traveling direction and the wind blows through the hollow long members 13 having both ends open when the vehicle travels, these hollow long members 13 have a heat dissipation effect. The amount of heat conducted from the heat shield plate 16 to the cab roof body 12 through the member 13 is suppressed.

  A heat insulating plate 16 is fixed on the cab roof main body 12 via a hollow long member 13, and a heat insulating material 19 is provided between the heat insulating plate 16 and the cab roof main body 12, so that the cab roof main body 12 has The heat shield plate 16 and the heat insulating material 19 can be easily additionally installed, and the cab roof structure 11 suitable for the case of additionally installing a heat insulating structure later can be provided.

  By moving the air in the hollow long member 13 having both ends open in the vehicle traveling direction, the amount of heat conducted from the heat shield 16 to the cab roof body 12 through the hollow long member 13 is reduced. The heat insulating effect by the heat insulating material 19 can be enhanced.

  A plurality of hollow long members 13 fixed on the cab roof main body 12 and a plurality of rib members 17 disposed on the back surface of the heat shield plate 16 are combined and disposed in a direction intersecting in a lattice shape. Therefore, the strength of the cab roof structure 11 formed from the cab roof body 12 to the heat shield plate 16 can be improved.

  INDUSTRIAL APPLICABILITY The present invention can be used for a cab roof structure of a vehicle such as a transporting machine such as an articulated dump truck, a construction machine such as a hydraulic excavator, a bulldozer, a loader and a motor grader, a cargo handling machine such as a forklift, and an agricultural machine.

It is sectional drawing which shows one Embodiment of the cab roof structure which concerns on this invention. It is a disassembled perspective view of a structure same as the above. It is a top view of a structure same as the above. It is a perspective view of an articulated dump truck.

Explanation of symbols

11 Cab roof structure
12 Cab roof body
13 Hollow long member as mounting member
16 Heat shield
17 Ribs as reinforcement members
19 Insulation

Claims (3)

The cab roof body,
A mounting member fixed on the cab roof body;
A heat shield fixed to the mounting member;
A cab roof structure, comprising: a heat insulating material provided between the heat shield plate and the cab roof main body. The cab roof structure according to claim 1, wherein the attachment member is a hollow long member having an opening at both ends disposed along the vehicle traveling direction. The cab roof structure according to claim 2, further comprising: a reinforcing member disposed on a back surface of the heat shield along a direction intersecting with the hollow long member disposed along the vehicle traveling direction. .

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