JPS5934540B2 - Tank lashing device on tank lorry - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a device for securing a tank to the vehicle body of a tank truck.

In conventional tank rows, the tank is directly or indirectly connected to the chassis frame by a set plate or U.
Many of them are configured to be firmly fixed using bolts or the like.

Therefore, vibrations of the vehicle body during driving are transmitted to the tank, which has various adverse effects on the cargo inside the tank. In addition, since the highly rigid tank and the chassis frame, which is subject to twisting and other deformations, are connected, an impactful torsional deformation force from the chassis frame side that occurs during driving is applied to various parts of the connection, and this force is repeatedly applied. This may eventually cause the joints to loosen or break, leading to a risk of serious accidents. The present invention was invented in view of the above-mentioned points, and when securing a highly rigid tank to a chassis frame, it absorbs vibrations of the vehicle body as much as possible, and does not cause torsional deformation of the chassis frame. The present invention aims to provide a tank lashing device that is effective and can be applied particularly to tower-mounted large-diameter tanks, so that it can exhibit stable functions over a long period of time. Hereinafter, embodiments of the present invention will be described based on the drawings. 1 is a chassis frame of a vehicle, 2 is a sub-frame fixed on this chassis frame, and a cushioning material 3 is interposed between the two. 5 is the tank body mounted on the tower via subframe 2;
6 is an outrigger mounted in a half-rolled manner at the lower center of the tank body 4, and 6 is a mounting board located below the outrigger 5 and fixed to the outer surface of the subframe. A seat plate T is fixed in a protruding manner, and this seat plate T is directly attached to the lower surface of the outrigger 5, or is overlapped with a seat plate 8 integrated with the outrigger 5 as in the illustrated example, and is used to hold bolts, nuts, etc. They are connected by a stopper 9.
In addition, 10 in the figure is a reinforcing rib of the seat plate T. A cross member 11 is fixed to the subframe 2, and its both ends are inserted and fixed between the left and right subframes.

In the illustrated example, a plurality of threaded rods having threaded portions at both ends are used, and a nut is tightened and fixed to each end from the outside of the subframe 2, but welding or the like may also be used. Next, at the front and rear ends of the tank, as shown in Figures 3 to 5, outriggers 12 are attached to the tank body 4, and girder members 13 are installed between the left and right subframes, and are positioned directly below the center line of the tank. The outrigger 12 and the girder member 13 are pivotally connected via a support shaft 14 parallel to the center line, and a support plate 15 is provided protruding outward from the subframe.
An elastic body 16 is interposed between them.

This elastic body 16 coincides with the tangential direction of an arc centered on the support shaft 14, and is intended to prevent the tank from lateral wobbling around the support shaft 14. With the above structure, vibrations caused when the vehicle is running, twisting of the chassis frame 1, etc. are absorbed by the cushion material 3 interposed between the chassis frame 1 and the subframe 2, and at the front and rear ends of the tank. , girder member 1
3, it is absorbed by the elastic body 16 interposed between the support plate 15 and the outrigger 12 while allowing movement around the support shaft 14 that pivotally connects the outrigger 12 and the subframe 2. This reduces the vibration of the tank body 4.

Accordingly, in the present invention, the tank body and the chassis frame are directly fixed at the center of the tank where torsional deformation of the chassis frame is minimized, and this fixation involves the outer part of the chassis frame. Since a protruding seat plate is used, the stability of the tank is extremely good, and it is possible to mount a tank with a large diameter compared to the spacing between the left and right subframes.

In addition, this chassis side seat plate is fixed on the mounting board, and this mounting board is further fixed to the subframe together with the cross member, so the connections of the chassis side parts that fix the tank center part are strong, and the tank side It can withstand high loads well and improves safety.

In addition, the front and rear ends of the tank have a degree of freedom that allows for lateral vibration of the tank and twisting deformation of the chassis frame when the vehicle is running, and the elastic body prevents vibrations. Since it has the effect of absorbing all the energy and maintaining the normal state as much as possible, it does not adversely affect the cargo and does not cause strain on the constituent parts. As explained above, the device of the present invention can expand the size of the tank that can be mounted on the tower, particularly its diameter, in view of the dimensions of the chassis frame of the tank truck, and also improves the stability of the tank. Also, even if the vibration systems on the chassis side and tank side are different,
It absorbs this vibration and improves the ride comfort of the vehicle, has no negative impact on cargo, and has sufficient strength to secure the tank side, which is made of high steel, and the chassis side, which is constantly subject to torsional deformation. This is an excellent technical invention that contributes to the safe operation of vehicles by ensuring that each member is easy to use and has improved durability, and that it is possible to provide various tank trucks according to the purpose of use.

[Brief explanation of drawings]

Figure 1 is an overall view of a tank truck to which the device of the present invention is applied;
2 is an enlarged front view of the main part of the central part of the tank, FIG. 3 is a side view of the same, FIG. 4 is an enlarged side view of the main part of the end of the tank, and FIG. 5 is a cutaway sectional view of the same part. 1... Chassis frame, 2... Sub frame, 3... Cushion material, 4...
・Tank body, 5...Outrigger, 6...
... Mounting board, 7 ... Seat plate, 8 ... Seat plate, 9 ... Stopper, 10 ... Rib, 11
...Cross member 12 ... Outrigger, 13 ... Girder member, 14 ... Support shaft, 15 ... Support plate, 16 ... ...Elastic body.

Claims (1)

[Claims] 1. A tank is mounted on the chassis frame via a cushioning material and a subframe, and the center part of the tank is fixed to the subframe, and the front and rear ends of the tank are located directly below the center line of the tank. The subframe side seat plates for fixing the center of the tank are made to protrude outward from the subframe and are fixed on the mounting board, and the front and rear ends of the tank are A tank securing device for a tank lorry, characterized in that an elastic body is interposed between an outrigger and a subframe. 2. The tank securing device for a tank lorry according to claim 1, wherein the fixing seat plate on the tank side is integrated with the lower surface of an outrigger attached to the tank.