JP4090807B2 - Valve protection structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a valve protection structure.
[0002]
[Prior art]
4 and 5 show an example of a general semi-tractor. In this type of semi-tractor 1, a semi-trailer 4 is connected to the rear of a cab 2 via a coupler 3. From the viewpoint of improving the transportation efficiency by increasing the length of 4 as much as possible, the vehicle is designed with a very short wheelbase (distance between the axle of the front wheel 5 and the axle of the rear wheel 6).
[0003]
Therefore, various auxiliary machines such as an air tank 8, a battery 9, a fuel tank 10, a spare tire 11 and the like are in close contact with the outside of the left and right side rails 7 between the rear surface of the cab 2 and the rear wheel 6. On the other hand, a drive system such as a transmission 12 is arranged at the center of the vehicle sandwiched between the left and right side rails 7.
[0004]
Further, exhaust gas discharged from the engine 13 of the cab 2 extends toward the rear of the vehicle on the lower side of one side rail 7 and bypasses the axle of the rear wheel 6 upward to reach the rear end of the vehicle. The exhaust pipe 14 is guided to the rear to be discharged, and a silencer 15 is provided in the middle of the exhaust pipe 14 as a countermeasure against exhaust noise.
[0005]
Further, since the rear fender 16 disposed on the upper side of the rear wheel 6 has no vehicle body structure above this position, the pair of front and rear fender supports 17 and 18 are arranged on the outer side in the vehicle width direction from the side rail 7 side. In this manner, the front and rear positions of the rear fender 16 are supported.
[0006]
And the side rail 7 in such a semi-tractor 1 is comprised by the channel material which forms a groove shape toward the vehicle width direction inside, and the inside of the groove shape enclosed by the upper and lower flanges and the web of this side rail 7 A plurality of nylon tubes constituting a pneumatic system of brake operating air are routed along the side rails 7 in the longitudinal direction of the vehicle, and the pneumatic systems are arranged at various positions in the longitudinal direction of the side rails 7. The valves are scattered.
[0007]
[Problems to be solved by the invention]
However, in such a conventional structure, since a large number of nylon tubes must be routed while avoiding valves in a limited space within the side rail groove shape, the nylon tube routing space at the location where the valve is located There was a problem that it was difficult to secure.
[0008]
Also, this type of pneumatic system valve is usually equipped with an exhaust port for exhausting the working air, but each valve is equipped with a bare rail groove. Therefore, there is a possibility that the exhaust port of the valve may be blocked due to snow accumulation and freezing in the groove shape of the side rail in winter, especially when the valve is a solenoid valve, There was a risk that the metal part would rust due to splash and snow accumulation, resulting in disconnection of the electrical system.
[0009]
The present invention has been made in view of the above-mentioned circumstances, simplifying the inside of the groove shape of the side rail in the semi-tractor, ensuring a comfortable installation space for the pneumatic system, and reliably protecting the valve from freezing and rust. The purpose is to get.
[0010]
[Means for Solving the Problems]
According to the present invention, a valve storage box is attached to a fender support that supports a front portion of a rear fender of a semi-tractor from the side rail side so as to face the rear fender side with the fender support interposed therebetween. A valve protection structure that collects and accommodates the valves of a pneumatic system arranged in the groove shape of the side rail , and includes a base plate that carries the valves, and a valve that is mounted at a lower position on the front side of the base plate. The valve housing box is divided into a lower cover that surrounds the periphery of the lower cover, and an upper cover that is attached to the upper position on the front side of the base plate so as to cover the upper opening of the lower cover and seal it in a watertight manner. An opening for drawing the pneumatic system is formed on the cover side .
[0011]
Thus, in this way, since the valves of the pneumatic system are collectively accommodated in the valve accommodating box, the valves are removed from the side rail groove shape, and the simplification in the side rail groove shape is simplified. As a result, the installation space for the pneumatic system will be secured without difficulty.
[0012]
In addition, since the valves of the pneumatic system are housed in the valve housing box and isolated from snow, rain, splash from the road surface, etc., the valves are reliably protected from freezing and rust, and the exhaust port of the valve Problems such as blockage and disconnection of the electrical system can be avoided in advance.
[0013]
For semi-tractors where it is difficult to secure an arrangement space due to the short wheel base, the valve storage box can be efficiently arranged by effectively using the surplus space immediately before the fender support that supports the front part of the rear fender. Therefore, the valve storage box can be arranged with little influence on the layout of other auxiliary machines.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0015]
1 to 3 show an example of an embodiment of the present invention. In the valve protection structure of this embodiment, as shown in FIG. 1, only the front part of the rear fender 16 (the rear fender on one side is shown). ) Is mounted on the fender support 17 that supports the side fender support 17 from the side rail 7 (see FIG. 3) side so as to face the rear fender 16 side across the fender support 17.
[0016]
That is, a flange portion 21 (see FIG. 2) is formed at the front end portion of the bracket 20 that connects between the fender support 17 and the front portion of the rear fender 16, and the valve housing box 19 is formed with respect to the flange portion 21. The back is attached via screws, bolts and nuts.
[0017]
As shown in FIG. 2, the valve housing box 19 has an air pressure routed in a groove shape surrounded by the upper and lower flanges 7a and 7b and the web 7c of the side rail 7 (see FIG. 3). The valves 22 of the system are collected and accommodated, and further, as shown in FIG. 3, a plurality of nylon tubes 23 (air tubes) constituting a pneumatic system are bundled together in the valve accommodating box 19 via the bellows boots 24. The nylon tubes 23 are drawn in a watertight manner, and the drawn nylon tubes 23 are connected to the valves 22.
[0018]
Here, the bellows boot 24 through which the bundle of nylon tubes 23 passes is formed on the inner surface in the vehicle width direction (the inner surface in the vehicle width direction of the lower cover 27 described later) of the valve storage box 19 of FIGS. It is designed to be attached to the opening 25, and ensuring water tightness at the location where the nylon tube 23 penetrates into the valve storage box 19, and avoiding contact of the nylon tube 23 with the edge of the periphery of the opening 25. It is supposed to play at the same time.
[0019]
Further, the valve storage box 19 is mounted at a lower position on the front side of the base plate 26, and a base plate 26 that supports the valves 22 as a back surface attached to the flange portion 21 of each bracket 20. A lower cover 27 that surrounds the periphery of the bulb 22 and an upper cover 28 that is attached to the upper position on the front side of the base plate 26 so as to cover the upper opening of the lower cover 27 and seal it in a watertight manner. The internal valve 22 can be inspected and maintained by removing only the upper cover 28 as appropriate.
[0020]
Thus, if the valve protection structure is configured in this way, the valves 22 of the pneumatic system are collectively accommodated in the valve accommodation box 19 immediately before the fender support 17. The valve 22 is removed, the inside of the groove shape of the side rail 7 is simplified, and a space for routing the nylon tube 23 forming the pneumatic system is reasonably secured in the groove shape of the side rail 7. become.
[0021]
Further, since the pneumatic system valve 22 is housed in the valve housing box 19 and isolated from snow, rain, splash from the road surface, etc., the valve 22 is reliably protected from freezing and rust. Problems such as blockage of the 22 exhaust ports and disconnection of the electrical system are avoided in advance.
[0022]
Therefore, according to the above-described embodiment, the inside of the groove shape of the side rail 7 can be simplified to easily secure the wiring space of the pneumatic system, and each valve 22 is reliably protected from freezing and rust. Therefore, the soundness of each valve 22 can be well maintained over a long period of time.
[0023]
Further, with respect to the semi-tractor 1 (see FIG. 4) in which the arrangement space is difficult to secure due to the short wheel base, the extra space immediately before the fender support 17 that supports the front part of the rear fender 16 is effectively used to accommodate the valve. Since the box 19 can be arranged efficiently, the valve housing box 19 can be arranged with little influence on the layout of other auxiliary machines.
[0024]
Note that the valve protection structure of the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention.
[0025]
【The invention's effect】
According to the valve protection structure of the present invention described above, various excellent effects as described below can be obtained.
[0026]
(I) Simplifying the inside of the side rail groove shape, it is possible to easily secure the wiring space of the pneumatic system, and it is possible to reliably protect each valve from freezing and rust. Soundness can be maintained well over a long period of time.
[0027]
(II) For the semi-tractor, which is difficult to secure the placement space due to the short wheel base, the valve housing box can be efficiently arranged by effectively using the surplus space immediately before the fender support that supports the front part of the rear fender. Therefore, the valve storage box can be arranged with little influence on the layout of other auxiliary machines.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an example of an embodiment for carrying out the present invention.
FIG. 2 is an exploded perspective view showing components of FIG.
FIG. 3 is a front view of the valve storage box of FIG. 1 as viewed from the front of the vehicle.
FIG. 4 is a side view showing an example of a general semi-tractor.
FIG. 5 is a view taken in the direction of arrows VV in FIG. 4;
[Explanation of symbols]
1 Semi-tractor 7 Side rail 16 Rear fender 17 Fender support 19 Valve housing box 22 Valve 23 Nylon tube (pneumatic system)

Claims (1)

A valve housing box is mounted on the fender support that supports the front part of the rear fender of the semi-tractor from the side rail side so as to face the rear fender side with the fender support interposed therebetween, and the groove of the side rail is placed in the valve housing box. A valve protection structure that collects and accommodates valves of a pneumatic system arranged in a form, and includes a base plate carrying each of the valves and a lower position on the front side of the base plate to surround each valve The valve housing box is divided into a lower cover that covers the upper opening of the lower cover and is attached to the upper position on the front side of the base plate so as to seal the water tightly. A valve protection structure characterized in that an opening for drawing a pressure system is formed .

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