JP5065760B2 - Oil storage tank and method of assembling the oil storage tank - Google Patents

Description

  The present invention relates to an oil storage tank that stores oil such as fuel and hydraulic oil in a vehicle such as a work vehicle or a construction machine, and an assembling method thereof.

Conventionally, for example, a configuration disclosed in Patent Document 1 has been proposed as an oil storage tank used for storing fuel, hydraulic fluid, and the like in a vehicle such as a work vehicle or a construction machine. In this oil storage tank, the tank outer wall is formed in a horizontally long shape. In the tank outer wall, a plurality of reinforcing plates having a function of a partition plate are fixed by welding in order to reinforce the tank outer wall and suppress the swing of the stored oil.
JP-A-9-263148

  However, in the conventional oil storage tank of Patent Document 1, since the plurality of reinforcing plates are formed separately from the tank outer wall, the number of parts is increased, and the number of assembling steps is increased. There was a problem that it took. In addition, it is necessary to weld the reinforcing plates to the inner surface of the tank outer wall while aligning the outer peripheries of the plurality of reinforcing plates in a narrow space closed by the tank outer wall. , It took more time to assemble.

  The present invention has been made paying attention to such problems existing in the prior art. An object of the present invention is to provide an oil storage tank that can reduce the number of parts and facilitate assembly.

To achieve the above object, the present invention comprises a tank outer wall composed of a plurality of face plates,
Is fixed to the inner surface of the tank outer wall, as well as reinforce the tank outer wall from the inside thereof, in an oil storage tank and a reinforcing plate for partitioning the inside space of the tank, by Ri before Symbol reinforcement to folding said faceplate The plate is integrally formed with the face plate, the outer peripheral edge of the reinforcing plate is welded to the inner side surface of another face plate, the face plate forming one side wall of the tank outer wall is a pair of first face plates, and both first face plates The reinforcing plate is formed on the first face plate. The second face plate is disposed between the two face plates .

  Therefore, in the oil storage tank of this invention, it is not necessary to provide a reinforcing plate separately from the tank outer wall, and the number of parts can be reduced. Moreover, it is not necessary to align the reinforcing plate and the tank outer wall, and when the reinforcing plate is welded to the inner surface of the tank outer wall, the welding can be easily performed.

Further, the first surface plate face plate pair forming one side wall of the tank outer wall, constituted by a second surface plate disposed on both the first face plates, form the reinforcing plate on the first surface plate if vMedia.Creating, be capable of forming an opening on both the first surface plate, it is possible to easily perform the welding operation.

  The tank outer wall has a horizontally long shape, and includes a front face plate that forms the upper side face, lower side face portion, and front side face of the tank, and a left face face plate and a right face plate that respectively form the left side face and the right side face of the tank. And a rear face plate that forms the rear side face of the tank, a rear face plate is constituted by the first face plate and the second face plate, and a reinforcing plate is preferably fixed to the inner side face of the front face plate.

Furthermore, it is preferable that the bottom face part and the top face part of the front face plate are formed in parallel with each other and the front face part is inclined so as to recede toward the top face part.
Further, in the above-described configuration, the left face plate and the right face plate can obtain high strength if a rim is bent at the edge and the rim is fixed to the inner side surface of the front face plate. .

If the left face plate and the right face plate are drawn to integrally form the rim, the number of parts can be reduced and high strength can be obtained.
Furthermore, a high-strength tank can be obtained by fixing a reinforcing material to the inner side surfaces of the front face plate and the rear face plate between the left and right reinforcing plates.

  In addition, if a tank leg portion is provided on the lower surface of the face plate at a position corresponding to the reinforcing plate, the reinforcement plate can resist the load acting on the leg portion, and deformation of the face plate can be prevented. Contributes to increasing the strength of oil storage tanks.

  In the invention relating to the manufacturing method of the oil storage tank, it is horizontally long and includes a front face plate that forms the upper surface portion, the bottom surface portion, and the front surface portion of the tank, and a left face plate that forms the left side surface and right side surface of the tank The first face plate is constituted by a right face plate and a rear face plate forming the rear side face of the tank, and the rear face plate is constituted by a pair of first face plates and a second face plate positioned between the first face plates. In the oil storage tank in which the reinforcing plate is bent, a second face plate is welded between the first face plates after the reinforcing plate is welded to the inner side surface of the front face plate.

  In the manufacturing method, it is preferable that the left face plate and the right face plate are welded to the end inner surface of the front face plate prior to welding of the reinforcing plate.

  As described above, according to the present invention, it is possible to reduce the number of parts and to facilitate the welding work.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 to 3 and FIGS. 4 to 6 showing the entire oil storage tank 21 of this embodiment, the metal oil storage tank 21 of this embodiment includes a horizontally long tank outer wall 22. Yes. The tank outer wall 22 is configured by fixing the face plates of the front face plate 23, the left face plate 24, the right face plate 25, and the rear face plate 26 by welding.

  As shown in FIGS. 3, 7 and 8, the front face plate 23 is formed in a substantially L-shaped side face, a front face part 23a forming the front side part of the tank outer wall 22, an upper face part 23b forming the upper side face, and a lower face. It has a bottom surface portion 23c that forms a side surface (bottom surface). The upper surface portion 23b and the bottom surface portion 23c are parallel to each other, and the front surface portion 23a is inclined so as to recede from the bottom surface portion 23c toward the upper surface portion 23b. This is to improve the visibility in the tank direction downward from the vehicle driver riding on the rear upper part of the oil storage tank 21.

  As shown in FIGS. 3, 4, and 6, the left face plate 24 and the right face plate 25 are end portions on both left and right ends of the front face plate 23 so as to form a left side surface and a right side surface of the tank outer wall 22. It fits inside the opening 23d and is fixed by welding. The left face plate 24 and the right face plate 25 are composed of main body portions 24a and 25a and cover plates 24b and 25b. The main body portions 24a and 25a are formed by drawing, and rims 24c and 25c are bent on the outer periphery except for the rear side. Accordingly, openings 24d and 25d are formed in the rear portions of the left face plate 24 and the right face plate 25. The cover plates 24b and 25b are fitted into the rear openings 24d and 25d of the left face plate 24 and the right face plate 25 and fixed by welding (see FIG. 8).

  As shown in FIGS. 3, 6 and 7, the rear face plate 26 has a rear opening between the rear ends of the upper face portion 23b and the bottom face portion 23c of the front face plate 23 so as to form the rear side face of the tank outer wall 22. It is fixed by welding in a state fitted in 23e. The rear face plate 26 includes a first rear face plate 26A as a pair of left and right first face plates, and a second rear face plate 26B as a second face plate disposed between the first rear face plates 26A. .

  As shown in FIG. 3, the pair of reinforcing plates 27 having a substantially triangular side shape are bent forward from the first rear face plates 26A and are integrated with the first rear face plates 26A. These reinforcing plates 27 are fixed to the inner surfaces of the front surface portion 23a, the upper surface portion 23b, and the bottom surface portion 23c of the front surface plate 23 by welding at the edges of their bottom and oblique sides. The front face plate 23 and the rear face plate 26 are reinforced by these reinforcing plates 27.

A pair of communication recesses 27 a is formed at the front end and the upper end of each reinforcing plate 27. The pair of communication holes 27 b are formed in the central portion of each reinforcing plate 27 with a space therebetween.
The oil storage tank 21 is partitioned and partitioned by the reinforcing plates 27, and the compartments are communicated by the communication recesses 27a and the communication holes 27b. Therefore, the rocking of the oil stored in the oil storage tank 21 is suppressed by the reinforcing plate 27, and the movement of the oil between the compartments is allowed through the communication recess 27a and the communication hole 27b.

  As shown in FIGS. 3, 6 and 8, the auxiliary reinforcing plate 28 is fitted into the rims 24c and 25c of the left face plate 24 and the right face plate 25 and fixed by welding. These auxiliary reinforcing plates 28 reinforce the vicinity of both left and right ends of the tank outer wall 22. The pair of communication recesses 28 a is formed at the front end and the upper end of each auxiliary reinforcing plate 28. The pair of communication holes 28b are formed at the center of each auxiliary reinforcing plate 28 with a mutual interval. Each auxiliary reinforcing plate 28 suppresses large oscillation of the oil in the oil storage tank 21 and allows movement of the oil by the communication recess 28a and the communication hole 28b.

  As shown in FIGS. 3 and 7, the front reinforcing member 29 having a plurality of cross-sectional mountain shapes is welded and fixed to the inner surface of the front face portion 23 a of the front face plate 23. These front reinforcing members 29 are arranged between the reinforcing plates 27 and are arranged so as to extend in parallel in the vertical direction with a mutual interval in the horizontal direction. The rear reinforcing member 30 having a plurality of cross-sectional mountain shapes is welded and fixed to the inner surface of the second rear face plate 26B. These rear reinforcing members 30 are arranged corresponding to the respective front reinforcing members 29 and arranged so as to extend in parallel in the vertical direction.

  As shown in FIGS. 4 and 5, the lower reinforcing material 31 having a plurality of cross-sectional mountain shapes is fixed to the lower outer surface of the bottom surface portion 23 c of the front face plate 23 by welding. The lower reinforcing member 31 includes a front end portion 31a extending along the front end of the bottom surface portion 23c, a rear end portion 31b extending along the rear end of the bottom surface portion 23c, and a central portion extending between the central portions of both the portions 31a and 31b. 31c.

The same parts are used for the reinforcing members 29, 30, and 31, and therefore, the parts are shared.
As shown in FIGS. 4, 5, and 7, the mounting seat 32 as a pair of tank legs is fixed to the lower outer surface of the bottom surface portion 23c of the front face plate 23 by welding. The mounting seat 32 is disposed on both the left and right sides of the lower reinforcing member 31 so as to extend in parallel in the front-rear direction. The mounting seat 32 is disposed at a position corresponding to the reinforcing plate 27 in the vertical direction. For this reason, the reinforcing plate 27 can resist the load acting on the mounting seat 32, the deformation of the front face plate 23 can be suppressed, and it is effective for increasing the strength of the oil storage tank 21. The plurality of screw holes 33 are formed in the mounting seats 32 at intervals in the front-rear direction.

  Then, as shown in FIG. 7, with the oil storage tank 21 placed on the vehicle body frame 34, bolts 35 are screwed into the respective screw holes 33 of the mounting seat 32 from the lower surface side of the vehicle body frame 34. The oil storage tank 21 is supported in a fixed state on the vehicle body frame 34 of the vehicle by screwing the bolt 35 and the screw hole 33. In addition, the rear surface of the oil storage tank 21 is obscured by the cab 36 mounted on the vehicle body frame 34.

  As shown in FIG. 1, an oil filling port 37 for injecting oil into the oil storage tank 21 is fixed by welding in a state of being fitted into an attachment hole 38 on the upper surface portion 23 b of the front face plate 23. . A cap (not shown) is detachably attached to the oil filling port 37.

  As shown in FIG. 7, the oil reservoir plate 39 is fixed to the inner peripheral edge of the through hole 40 by welding in the through hole 40 on the bottom surface portion 23 c of the front face plate 23. A feed outlet 41 for feeding the oil in the oil storage tank 21 to an operating mechanism (not shown) such as an external engine is fixed to the bottom of the oil reservoir plate 39. A drain pipe 42 for extracting sludge and the like from the oil storage tank 21 is provided at the bottom of the oil reservoir plate 39.

Next, a method for assembling the oil storage tank 21 configured as described above will be described.
When the oil storage tank 21 is assembled, the front reinforcing member 29, the lower reinforcing member 31, the mounting seat 32, the oil filling port 37, and the oil reservoir plate 39 are fixed to the front face plate 23 in advance by welding. deep. Further, cover plates 24b and 25b and an auxiliary reinforcing plate 28 are fixed to the left face plate 24 and the right face plate 25 by welding. Further, the rear reinforcing member 30 is fixed to the second rear face plate 26B by welding.

  In this state, as shown in FIGS. 4, 6 and 9, the edges of the rims 24c and 25c of the left face plate 24 and the right face plate 25 are fitted into the openings 23d on both left and right ends of the front face plate 23. Join and fix by welding.

  Next, as shown in FIGS. 10 and 11, a pair of first rear face plates 26A are fitted into both ends of the rear opening 23e of the front face plate 23 and fixed by welding. At the same time, the reinforcing plate 27 bent at the edge of each first rear face plate 26 </ b> A is welded and fixed to the inner surface of the front face plate 23.

  In this case, since the reinforcing plate 27 is formed integrally with the first rear face plate 26A, the work of holding the reinforcing plate 27 in a predetermined position in the front face plate 23 is unnecessary. In addition, since a wide space is formed between the pair of reinforcing plates 27 in the center of the front face plate 23, it is easy to weld the reinforcing plate 27 to the inner side surface of the front face plate 23 using the space. Can be done easily. Moreover, since the reinforcing plate 27 is integral with the rear face plate 26, the number of welded portions is reduced.

  Subsequently, as shown in FIG. 11, the second rear face plate 26B is fitted in the center of the rear opening 23e of the front face plate 23, and the outer peripheral edge thereof is folded on the edge of the front face plate 23 and the first rear face plate 26A. It is fixed to the rear surface of the curved part by welding. By this welding and fixing, an oil storage tank 21 is formed as shown in FIGS. Both ends of the oil storage tank 21 assembled in this way are reinforced by auxiliary reinforcing plates 28. Further, the front face plate 23 occupying the widest area of the tank outer wall 22 is reinforced from the inside by a reinforcing plate 27 integral with the first rear face plate 26A. Further, the front face plate 23 and the flat second rear face plate 26B are reinforced by the reinforcing material 29. Therefore, the oil storage tank 21 having a strong structure can be obtained.

  In the oil storage tank 21, the reinforcing plate 27 is integrally bent from the edge of the first rear face plate 26 </ b> A of the tank outer wall 22. For this reason, compared with the conventional structure which formed the reinforcement board separately from the tank outer wall, the number of parts can be reduced. Further, in the oil storage tank 21, in the welding of the reinforcing plate 27, the welding operation can be performed using the wide space between the both reinforcing plates 27 as described above. Therefore, unlike the conventional configuration, it is not necessary to perform the troublesome work of welding the reinforcing plate to the inner surface of the tank outer wall in a narrow space in the tank outer wall. Therefore, the welding operation can be easily performed and the operation process can be simplified.

  Further, in the oil storage tank 21, there are almost no seams between the face plates on the front surface and the upper surface of the tank outer wall 22 except for both ends. That is, a seam between the front face plate 23 and the rear face plate 26 and a seam between the first rear face plate 26A and the second rear face plate 26B exist on the rear face side of the tank outer wall 22. Therefore, as shown in FIG. 7, when the oil storage tank 21 is installed on the vehicle body frame 34, the rear surface of the tank outer wall 22 can be covered by the cab 36 and the like, and the appearance of the oil storage tank 21 is kept good. Can do.

(Example of change)
In addition, this embodiment can also be changed and embodied as follows.
In the embodiment, the opening 23e is formed on the rear surface of the tank outer wall 22, and the reinforcing plate 27 is bent on the rear surface plate 26 covering the rear opening 23e. The reinforcing plate 27 may be bent on the face plate covering the open part by opening the other surface.

In the embodiment described above, the auxiliary reinforcing plate 28 is provided on the left face plate 24 and the right face plate 25, but these auxiliary reinforcing plates 28 are not necessarily required and may be omitted .

The perspective view which shows the oil storage tank of one Embodiment seeing from the front left side. The perspective view which shows the oil storage tank of FIG. 1 seeing from the rear right side. The disassembled perspective view of the oil storage tank of FIG. The longitudinal cross-sectional view of the oil storage tank of FIG. The bottom view of the oil storage tank. Sectional drawing in the 6-6 line of FIG. FIG. 7 is an enlarged cross-sectional view taken along line 7-7 in FIG. The expanded sectional view in the 8-8 line of FIG. The perspective view which shows the assembly | attachment method of the oil storage tank. The perspective view which shows the same assembling method following FIG. The perspective view which shows the same assembling method following FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 21 ... Oil storage tank, 22 ... Tank outer wall, 23 ... Front part face plate, 23a ... Front part, 23b ... Top part, 23c ... Bottom part, 24 ... Left part face plate, 24c ... Rim, 25 ... Right part face plate, 25c ... Rim , 26 ... rear face plate, 26A ... first rear face plate, 26B ... second rear face plate, 27 ... reinforcing plate, 27a ... communication recess, 27b ... communication hole, 29 ... reinforcing material, 30 ... reinforcing material, 31 ... reinforcing material.

Claims (9)

A tank outer wall composed of a plurality of face plates;
In the oil storage tank, which is fixed to the inner surface of the outer wall of the tank, reinforces the outer wall of the tank from the inside, and a reinforcing plate that partitions the inner space of the tank
With integrally formed with the face plate by Ri before Symbol reinforcing plate to bending the face plate, welding the peripheral edge of the reinforcing plate to the inner surface of the other of the face plate,
The face plate forming one side wall of the tank outer wall is constituted by a pair of first face plates and a second face plate disposed between the first face plates, and the reinforcing plate is formed on the first face plate. Oil storage tank. The tank outer wall has a horizontally long shape, a front face plate that forms an upper side face, a lower side face, and a front side face of the tank, a left face plate and a right face plate that respectively form a left side face and a right side face of the tank, A rear face plate that forms a rear side surface of the rear face plate is formed of the first face plate and the second face plate, and a reinforcing plate is fixed to the inner side surface of the front face plate. The oil storage tank according to 1 . 3. The oil storage tank according to claim 2 , wherein a bottom surface portion and an upper surface portion of the front face plate are formed in parallel to each other, and the front surface portion is inclined so as to recede toward the upper surface portion. 4. The oil storage tank according to claim 2, wherein the left face plate and the right face plate are formed by bending a rim at an edge thereof, and the rim is fixed to an inner surface of the front face plate. The oil storage tank according to claim 4 , wherein the rim is integrally formed by drawing the left face plate and the right face plate. The oil storage tank according to any one of claims 2 to 5 , wherein a reinforcing material is fixed to the inner surface of the front face plate and the rear face plate between the left and right reinforcing plates. The oil storage tank according to any one of claims 1 to 6 , wherein a tank leg portion is provided on a lower surface of the face plate at a position corresponding to the reinforcing plate. A front face plate that is horizontally long and forms a top face, a bottom face, and a front face of the tank;
A left side plate and a right side plate forming the left side and right side of the tank, respectively;
It consists of a rear face plate that forms the rear side of the tank,
In the oil storage tank in which the rear face plate is constituted by a pair of first face plates and a second face plate positioned between the first face plates, and the reinforcing plate is bent on the first face plate,
A method for assembling an oil storage tank, wherein the second face plate is welded between the first face plates after the reinforcing plate is welded to the inner face of the front face plate. 9. The method of assembling an oil storage tank according to claim 8 , wherein the left face plate and the right face plate are welded to the inner surface of the end portion of the front face plate prior to welding of the reinforcing plate.

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