JP4908391B2 - Rear fender support structure for transport vehicles - Google Patents

Description

  The present invention relates to a rear fender support structure in a transport vehicle.

  This type of transport vehicle is equipped with a tank as a loading facility on the chassis frame, and a granular material transport vehicle that transports cement, flour, and other particles, and a mixer drum as a loading facility on the chassis frame. In addition, there are mixer trucks that transport mortar, ready-mixed concrete, and the like.

In the case of vehicles used for such granular material transport vehicles and mixer trucks, there is often no rear fender that is used as a mudguard for rear wheels before mounting tanks and other loading equipment. For this purpose, a pair of stays are provided on the front and rear sides of the rear side of the chassis frame, and the rear fender is supported by each stay (see, for example, Patent Document 1).
Japanese Utility Model Publication No. 5-64072

  And, in the case of such a transport vehicle having a large-capacity loading facility, the rear wheel is often long in the front-rear direction and has two rear wheels, and a rear fender that covers the rear wheels of the two shafts is inevitably required. Therefore, it becomes long in the front-rear direction.

  Here, since the chassis frame in the transport vehicle is long in the front-rear direction, the chassis frame bends and twists due to vibration during traveling. In addition, since the front and rear stays that support the rear fender support the front and rear of the rear fender, the stay interval is increased in accordance with the length of the rear fender. The longer the is, the larger it becomes.

  On the other hand, in the conventional transport vehicle, no treatment is made, and a large bending stress continuously acts on the rear fender, and there is a possibility that the deterioration of the rear fender is accelerated.

  Therefore, the present invention has been developed to improve the above-mentioned problems, and an object of the present invention is to provide a rear fender support structure capable of suppressing deterioration of a rear fender in a transport vehicle. .

  In order to achieve the above-described object, the problem solving means of the present invention includes a chassis frame that supports a loading facility, and a pair of stays that are installed on the side of the chassis frame and support a rear fender that covers a rear wheel of the vehicle. The rear fender support structure in the transport vehicle provided includes a pair of support beams that are pin-joined and bridged between the stays, and the rear fender is supported by the support beams.

  According to the present invention, the rear fender is not directly supported by the stay, but is supported by the support beam that is pin-coupled to the stay. Even if the chassis frame is bent or twisted, the support beam is supported. Functions as a strength member, and the bending of the chassis frame and the transmission of torsion to the support beam are mitigated by the pin connection, so that bending stress can be prevented from acting on the rear fender, and the bending stress can be reduced. Can be small.

  Therefore, according to the rear fender support structure in this transport vehicle, it is possible to suppress the deterioration of the rear fender, and the rear fender can have a long life.

  The present invention will be described below based on the illustrated embodiment. FIG. 1 is a side view of a rear part of a granular material transport vehicle in which a rear fender support structure according to an embodiment is embodied. FIG. 2 is a perspective view of the rear part of the granular material transport vehicle in which the rear fender support structure according to the embodiment is embodied. FIG. 3 is a perspective view of the rear part of the granular material transport vehicle in which the rear fender support structure in one modification of the embodiment is embodied.

  As shown in FIGS. 1 and 2, the rear fender support structure in one embodiment is embodied in a rear fender portion that covers the rear wheels W and W of the granular material transport vehicle, and is a loading facility that stores the granular material. The chassis frame 1 for supporting the tank T as a pair, the pair of stays 2 and 2 installed on the sides of the chassis frame 1 and the front and rear, respectively, and the pins 2 between the stays 2 and 2 A pair of support beams 3 and 3 to be passed and a rear fender 4 supported on the support beams 3 and 3 from below are configured. In the description of the rear fender support structure of the present invention, the rear fender structure of the left rear wheel portion with respect to the vehicle traveling direction of the granular material transport vehicle will be described as an example, but the rear fender covering the right rear wheel is also embodied. Of course, it may be realized.

  The tank T is mounted and supported on the left and right chassis frames 1 and 10 via the tank frame 5 as shown in FIGS. 1 and 2, and the tank frame 5 also constitutes a part of the loading equipment. ing. A pair of square pipe-shaped stays 2 and 2 are attached to the chassis frame 1 in the front-rear direction from the side toward the left in the vehicle traveling direction.

  Support beams 3 and 3 are bridged over the stays 2 and 2. The support beam 3 is inclined downward so that both end portions 3a and 3b conform to the shape of the rear fender 4, and the ends of the both end portions 3a and 3b are respectively connected to the stay 2 by pin coupling that allows rotation in the vertical direction. , 2 are fixed.

  Specifically, the stays 2 and 2 are each provided with mounting pieces 2a and 2a each having a pair of holes (not shown), and both ends 3a and 3b of the support beams 3 and 3 are also provided with horizontal holes (not shown). A pin 6 is inserted into a hole in the piece 2 a and a lateral hole provided in the support beam 3, and the stay 2 and the support beam 3 are pin-coupled.

  The support beams 3 and 3 are connected to each other by five connection beams 7 to form a ladder-like frame. A plurality of panel-like plate members are pasted on a frame constituted by the support beams 3 and 3 and the connecting beam 7 and fixed by welding or the like, and the rear fender 4 covers the upper portion of the rear wheel W with these plate members. Is configured.

  As described above, the rear fender 4 is actually configured by pasting a panel-shaped plate material divided into several pieces onto a frame body composed of the support beam 3 and the connecting beam 7, and the rear fender 4 is manufactured in advance. In addition, it may be mounted on a frame made up of the support beam 3 and the connecting beam 7.

  Thus, in this transport vehicle, the rear fender 4 is not directly supported by the stays 2 and 2 but is supported by the support beams 3 and 3 pin-coupled to the stays 2 and 2. Thus, even if the chassis frame 1 is bent or twisted, the support beams 3 and 3 function as strength members, and the transmission of the deflection and twist of the chassis frame 1 to the support beams 3 and 3 is mitigated by the pin connection. Therefore, it is possible to suppress the bending stress from acting on the rear fender 4 and to reduce the bending stress.

  Therefore, according to the rear fender support structure in this transport vehicle, it is possible to suppress the deterioration of the rear fender 4, and the rear fender 4 can have a long life.

  Further, according to the rear fender support structure in the present embodiment, since the support beams 3 and 3 form a frame body in cooperation with the connecting beam 7, the support beam 3, which is a member that directly supports the rear fender 4. Since the strength against deformation is improved, the effect of suppressing the bending stress from acting on the rear fender 4 is further enhanced, and the deterioration of the rear fender 4 can be further suppressed.

  If at least two or more connecting beams 7 are provided, a frame body can be formed by the support beams 3 and 3 and the connecting beams 7, and the effect of suppressing deterioration of the rear fender 4 can be enhanced. Further, as the number of the connecting beams 7 increases, the strength of the frame formed by the support beams 3 and 3 and the connecting beams 7 is improved, and accordingly, the deterioration suppressing effect of the rear fender 4 can be improved. it can.

  In the present embodiment, the stay 2 is formed in the shape of a square pipe. However, the stay 2 is not limited to the above-described shape as long as it can be pin-coupled to the support beams 3 and 3. Further, the cross-section and other shapes of the support beams 3 and 3 can be arbitrarily set. However, the support beams 3 and 3 are formed in a shape that follows the shape of the rear fender 4 as in the present embodiment. There is an advantage that deterioration of the rear fender 4 can be further prevented, because the back fender 4 can be suppressed by suppressing the bending of the rear fender 4.

  Furthermore, in the embodiment described above, the stays 2 and 2 are directly installed on the chassis frames 1 and 10, but as shown in FIG. 3, the tank frame 5 is laminated on the chassis frame 1 for reasons of strength compensation and the like. When the sub-frame 8 such as a square pipe or C-type channel is provided, the stays 2 and 2 are attached to the sub-frame 8, and the stays 2 and 2 are installed on the chassis frame 1 via the sub-frame 8. You may do it. By doing so, it is possible to mitigate the propagation of the bending and twisting generated in the chassis frame 1 to the rear fender 4 via the subframe 8 and to improve the deterioration prevention effect of the rear fender 4.

  Further, the stays 2 and 2 may be attached to the tank frame 5 instead of the subframe 8. That is, in order to install the pair of stays 2 and 2 on the side of the chassis frame 1, in addition to being attached directly to the chassis frame 1, it is indirectly possible through a loading facility mounted and supported on the chassis frame 1. It is a concept that includes installation.

  In this embodiment, the rear fender support structure is described as an example embodied in a granular material transport vehicle. However, the rear fender support structure is applied to a mixer truck using a tank lorry or loading equipment as a mixer drum. Can also be realized.

  This is the end of the description of the embodiment of the present invention, but the scope of the present invention is of course not limited to the details shown or described.

It is a side view in the rear part of the granular material carrier vehicle which the rear fender support structure in one embodiment embodied. It is a perspective view in the rear part of the granular material transport vehicle in which the rear fender support structure in one embodiment is embodied. It is a perspective view in the rear part of the granular material transport vehicle in which the rear fender support structure in one modified example of the embodiment is embodied.

Explanation of symbols

1,10 Chassis frame 2 Stay 2a Mounting piece 3 Support beam 4 Rear fender 5 Tank frame 6 Pin 7 Connecting beam 8 Subframe T Tank W Rear wheel in granular material transport vehicle

Claims (5)

In a rear fender support structure in a transport vehicle having a chassis frame that supports loading equipment and a pair of stays that are installed on the side of the chassis frame and that support a rear fender that covers the rear wheel of the vehicle, the pins are joined between the stays. A rear fender support structure, wherein a pair of support beams are provided and the rear fender is supported by the support beams. The rear fender support structure according to claim 1, wherein two or more connecting beams for connecting the supporting beams are provided. The rear fender support structure according to claim 1, wherein the support beam has a shape along the rear fender. The rear fender support structure according to any one of claims 1 to 3, wherein the stay is installed on the chassis frame via a loading facility. The rear fender support structure according to any one of claims 1 to 4, wherein the stay is installed on the chassis frame via a subframe.

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