JP3650884B2 - Tank fixing structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a resin tank fixing structure mounted on a vehicle such as a construction machine.
[0002]
[Prior art]
Recently, a tank made of resin has been adopted as a tank mounted on a construction machine or the like. This is because a resin tank is inexpensive to manufacture and can be easily manufactured even with a tank having a complicated shape. However, since the resin tank has a small coefficient of friction and is slippery, the conventional fastening band has a problem that the band slips off. For this reason, various ideas have been made.
[0003]
For example, FIG. 6 shows an example of a conventional fixing method (hereinafter referred to as conventional device 1). 6A is a plan view and FIG. 6B is a side view. In these drawings, a resin tank 50 fixes a fixed support 52 (for example, a bracket or the like) to the surface of a revolving body frame (or revolving body frame floor) 51 by bolt fastening or welding. A belt 53 having a fixed attachment portion 53a and an adjustment portion 53b is attached to both ends of the fixed support portion 52, and the length and tension are adjusted to fix the resin tank 50 to the frame floor 51. In the conventional apparatus 1, the resin tank 50 is pressed against the frame floor 51 by the fastening force of the belt 53 and is fixed in the vertical direction. Further, the lateral movement is fixed by the frictional force.
[0004]
FIG. 7 shows another conventional apparatus and a tank fixing structure described in Japanese Utility Model Laid-Open No. 6-8047. Hereinafter, it is referred to as the conventional device 2. In this figure, a fixed block 61 is fixed to the surface of the revolving body frame 51 by welding or the like, and a tank fixing member 62 is fixed to the fixed block 61 by bolt fastening. On the other hand, the resin tank (fuel tank) 60 is provided with a recess 63 fitted to the fixing member 62 in the vertical direction and a groove 64 fitted to the belt 65 in the circumferential direction. The resin tank 60 is fastened to the belt 65 together with the fixing member 62 and fixed to the fixing member 62. In the conventional apparatus 2, the resin tank 60 is fixed to the fixing member 62 in the horizontal direction by the belt 65. Further, the vertical direction is fixed by a frictional force.
[0005]
FIG. 8 shows a tank fixing structure described in JP-A-9-272347. Hereinafter, it is referred to as the conventional device 3. The conventional device 3 has a fixed structure using a fixed object 72 fixed to the revolving structure frame 51 as a fixed support portion. In other words, the flat surface of the resin tank 70 is back-to-back on the fixed object 72 and fixed by the belt 73. Further, the resin tank 70 is provided with a groove 74 for fitting with the belt 73 as in the conventional apparatus 2, and both ends of the belt 73 are fixed to a metal fitting 76 attached to the fixed object 72 by bolts 75. Reference numeral 77 denotes a cover. The conventional device 3 is fixed by the belt 73 in the horizontal direction, but fixed in the vertical direction by friction caused by the tightening force of the belt 73 and the fitting between the groove 74 and the belt.
[0006]
FIG. 9 shows a tank fixing structure described in Japanese Patent Laid-Open No. 2000-64351. Hereinafter, it is referred to as the conventional device 4. The conventional device 4 is provided with a direction support portion 81 and a fixed support portion 82 on the surface of the revolving body frame 51, and the resin tank 80 is placed on the revolving body frame 51 in contact with the direction support portion 81 and fixed belt 83. Is fastened in a diagonal direction. Screw portions 83 a are provided at both ends of the fixed belt 83, and the fixed belt 83 is fastened to the fixed support portion 82 by nuts screwed with the screw portions 83. The resin tank 80 is provided with a groove 85 that fits with the fixing belt 83, and a rubber band 83 b for preventing slipping is attached to the back surface of the fixing belt 83. The conventional device 4 is fixed by a fixing belt 83 in the vertical and oblique directions, and the rotational movement in the direction orthogonal thereto is fixed by a frictional force.
[0007]
[Problems to be solved by the invention]
The conventional devices 1 to 4 described above are fixed by tightening a tank with a belt. The belt can be fixed almost completely in the tightened direction, but it is fixed in the other direction by frictional force. Become. Therefore, the resin tank is likely to vibrate due to the vibration of the revolving structure, and there is a problem that noise is generated and scratches are generated. Further, it is necessary to tighten the belt while adjusting the tightening force using a spanner or the like, which makes it difficult to use an automatic tool and takes time to assemble.
The present invention has been made in view of the above-described facts, and has been made to provide an apparatus that solves the problems of conventional apparatuses. That is, it is an object of the present invention to provide a resin tank fixing structure that is completely fixed, suppresses the generation of noise and scratches, and enables efficient assembly work.
[0008]
[Means for solving problems]
In order to solve the above problems, the present invention employs the following means. That is, the invention according to claim 1 is a resin tank fixing structure mounted on a vehicle such as a construction machine , wherein a flange portion standing on a flat portion of the resin tank and reinforcing portions on both sides of the flange portion are provided. It is formed integrally with the resin tank , a fixed support portion is provided on a revolving body frame of a construction machine or the like, and the flange portion and the fixed support portion are bolted to fix the resin tank. It is said.
[0009]
According to a second aspect of the present invention, in the resin tank fixing structure mounted on a vehicle such as a construction machine, a flange portion is provided in the resin tank, and one side or both sides of the flange portion are provided on the wall portion of the resin tank. Connected and integrally formed with the resin tank , provided with a fixed support portion on a revolving body frame of a construction machine or the like, and bolted the flange portion and the fixed support portion to fix the resin tank. It is characterized by that.
[0010]
According to a third aspect of the present invention, in the first or second aspect of the present invention, the flange portion is provided at a plurality of locations of the resin tank. According to a fourth aspect of the present invention, in the invention of the first to third aspects, the bolt fastening is characterized in that a cushion material is inserted between the flange portion and the fixed support portion. Yes.
[0011]
According to a fifth aspect of the present invention, in the first to fourth aspects of the invention, the tank fixing structure uses both the bolt fastening and the belt fastening fastening.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to FIGS. FIG. 1 shows a front view of an embodiment of the present invention (not necessarily coincident with the front of a construction machine). 2 is a left side view of FIG. 1, and FIG. 3 is an upper plan view. FIG. 4 is an exploded view illustrating details of the fixing portion. FIG. 5 shows an embodiment in which a part is changed.
[0013]
In the present embodiment, a case where the resin tank 20 is fixed at three locations is shown. Further, a frame 12 for fixing the resin tank 20 is provided. 1 to 3, a fixing frame 12 is erected on a revolving body frame floor 11 with bolts or welding. As shown in FIG. 2, the fixing frame 12 has a U-shape whose left side surface is inverted, and is formed of a base frame 12 a, an arm portion 12 b (see FIGS. 1 and 3), and a distal end portion 12 c. . The arm portion 12b has a cross beam shape and is fixed to the base frame 12a, and the distal end portion 12c is fixed to the arm portion 12b. In addition, the arm part 12b is comprised by the L-shaped angle.
[0014]
The fixing support portions 14 to 16 are provided at positions where the fixing positions can be efficiently fixed in consideration of the location and shape of the resin tank 20. The first fixed support portion 14 is fixed to the base frame 12a by bolts or welding. The second fixed support portion 15 is fixed to the distal end portion 12c with a bolt or the like. The third fixed support portion 16 is fixed to a pedestal 17 provided on the revolving body frame floor. The 1st-3rd fixed support parts 14-16 are comprised by the L-shaped angle which consists of steel or a hard material.
[0015]
The resin tank 20 is a tank that can contain hydraulic oil or liquid fuel, and is formed in a complicated shape for reasons such as restrictions on the installation location. The inlet 21 is provided at the head of the resin tank 20, and the outlet 22 is provided at an appropriate position on the side surface (see FIG. 2). The resin tank 20 is provided with flange portions 24 to 26 at positions suitable for fixing, and the above-described fixing support portions 14 to 16 are provided at positions where these flange portions can be bolted. As shown in FIGS. 1-3, the flange part 24 is provided in the flat surface of the side surface of the tank 20, and the flange part 25 is provided in the flat surface of the upper surface. The flange portion 26 is provided on a flat surface at the lower front portion of the tank 20. In the present embodiment, the flange portion is provided on a flat surface, but it may be a surface having a slight concave surface or a convex surface, or a surface having a wall portion formed on one side or both sides. good.
[0016]
The flange portions 24-26 are configured as shown in FIG. That is, the flat portion 31 on the surface of the tank 20 is provided with the plate-like portions 32 of the flange portions 24 to 26 vertically, the reinforcing portions 33 and 33 are provided on both sides of the plate-like portion 32, and A fixing hole 34 is provided in the center. These flange portions 24 to 26 are preferably formed integrally with the resin tank 20. This is because manufacture is easy and sufficient strength can be maintained. In addition, you may connect with the wall part formed in the tank surface instead of providing a reinforcement part.
[0017]
FIG. 4 shows a bolt fastening method between the flange portions 24 to 26 and the fixed support portions 14 to 16. In FIG. 4, the fixing support portion 35 is configured by an L-shaped angle, and a fixing hole is provided on the standing surface, and the mounting surface is fixed to the fixing frame 36 by bolts or welding. Elastic bodies 37 and 38 are inserted between the plate-like portion 32 of the flange portion and the fixed support portion 35 and between the flange portion 32 and the washer 39, respectively. The elastic bodies 37 and 38 serve as cushions and are mainly intended to prevent damage to the flange portion 32, and are made of rubber or soft plastic. In some cases, a spring may be used. As shown in FIG. 4, the bolt is fastened by tightening a bolt 40 and a nut 41 by sequentially arranging a cushion material 37 on one side of the plate-like portion 32, a fixed support portion 35, and a cushion material 38 and a washer 39 on the opposite side. Is done.
[0018]
FIG. 5 shows another embodiment, in which the bolt fastening and the belt fixing method are used in combination. Instead of providing the flange portion 26 in FIG. 1, the groove 43 is formed in the resin tank, and the resin tank 20 is fixed to the revolving body frame floor on a fixing belt (not shown). In this case, when both types are used for fixing, not only the number of bolt fastenings is reduced, but also there is a feature that they can be fixed more firmly. Therefore, it is suitable for fixing to a place where vibration is intense.
[0019]
As described above, in this embodiment, the resin tank 20 is provided with a plurality of flange portions (24 to 26), and the flange portions are bolted to the fixed support portions (14 to 16) fixed to the revolving body frame 11. Since it is fixed by fastening, the resin tank 20 is fixed in all directions and can be completely fixed. Moreover, since the cushion material is inserted in the bolt fastening, not only can the resin tank 20 be prevented from being damaged, but also high-frequency noise can be prevented. Therefore, even when the resin tank 20 is arranged close to other structures, there is no need to provide a cushioning material between them, so that the space can be widely used. In addition, since bolt fastening can be easily done using an automatic tool, there is an effect that manual work is reduced and assembly work is facilitated.
[0020]
The embodiment of the present invention has been described in detail with reference to the drawings. However, the technical scope of the present invention is not limited to this, and for example, the positions and number of bolt fastenings are those shown in the above-described embodiments. It is not limited.
【The invention's effect】
In the present invention, the resin tank is provided with a plurality of flange portions, and the flange portions are fixed to the fixed support portion fixed to the revolving body frame by bolt fastening. The effect that it can be fixed is obtained. Even when the resin tank 20 is arranged close to other structures, there is no need to provide a cushioning material between them, so there is an effect that the space can be widely used. Moreover, since bolt fastening can be easily fastened using an automatic tool, the effect that assembly work becomes easy is also acquired.
[Brief description of the drawings]
FIG. 1 shows a front view of an embodiment of the present invention.
FIG. 2 shows a left side view of an embodiment of the present invention.
FIG. 3 shows a top plan view of an embodiment of the present invention.
FIG. 4 shows an exploded view of a bolt fastening portion.
FIG. 5 shows another embodiment.
6A is a plan view, and FIG. 6B is a front view of a fixing method of the conventional apparatus 1;
FIG. 7 shows a fixing method of the conventional apparatus 2;
FIG. 8 shows a fixing method of the conventional apparatus 3;
FIG. 9 shows a fixing method of the conventional device 4.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 11 Rotating body frame 12 Fixing frame 14-16 Fixed support part 20 Resin tank 24-26 Flange part 31 Flat part 32 Plate-shaped part (fixed support part)
33 Reinforcement part (fixed support part)
35 Fixing support part 36 Fixing frame 37, 38 Elastic body (cushion material)

Claims (5)

In a resin tank fixing structure mounted on a vehicle such as a construction machine, a flange portion standing on a flat portion of the resin tank and reinforcing portions on both sides of the flange portion are formed integrally with the resin tank, A tank fixing structure characterized in that a fixed support portion is provided on a revolving body frame of a construction machine or the like, and the flange portion and the fixed support portion are bolted to fix the resin tank. In a resin tank fixing structure mounted on a vehicle such as a construction machine, a flange portion is provided in the resin tank, and one side or both sides of the flange portion are connected to a wall portion of the resin tank so as to be integrated with the resin tank. The tank fixing structure is characterized in that the resin tank is fixed by forming a fixing support portion on a revolving body frame of a construction machine or the like, and fastening the flange portion and the fixing support portion with bolts. The tank fixing structure according to claim 1, wherein the flange portion is provided at a plurality of locations of the resin tank.   The tank fixing structure according to any one of claims 1 to 3, wherein the bolt fastening is performed by inserting a cushion material between the flange portion and the fixing support portion.   The tank fixing structure according to claim 1, wherein the tank fixing structure uses both the bolt fastening and the fastening fastening by a belt.

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