JP2002090205A - Oil gauge device - Google Patents

Abstract

(57) [Problem] To prevent a gauge float from being caught in a middle part of a gauge pipe so that the amount of oil in a tank can be measured more accurately. SOLUTION: A straight gauge tube 92 and an upper connecting tube 93 are provided.
And the lower connecting pipe 94 are separately provided, and the gauge pipe 92 is supported vertically in the vicinity of the tank 10 and the gauge pipe 9 is provided.
2, a float 95 for the gauge is held so as to be movable up and down,
The upper connecting pipe 93 is connected to the upper end of the gauge pipe 92 and the upper side of the tank 10, and the lower connecting pipe 94 is connected to the lower end of the gauge pipe 92 and the lower side of the tank 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil gauge device used for a tank such as a fuel tank.

[0002]

2. Description of the Related Art In a backhoe, for example, a traveling device is provided with a revolving board that is rotatable about a vertical axis, and an engine is disposed on a rear portion of the revolving board. Some have a fuel tank arranged in. In this case, as shown in FIG.
Is provided with an oil gauge device 121. The gauge tube 122 of this oil gauge device 121 is
23 and a horizontal portion 124 bent in the horizontal direction from the upper end of the vertical portion 123, and an inclined portion 125 bent obliquely downward from the lower end of the vertical portion 123 is formed in a bent shape.
A gauge float 126 is vertically movably held inside the gauge tube 122, and an end of the gauge tube 122 on the horizontal portion 124 side is connected to a communication port 128 of the fuel tank 120 by an upper connection hose 128 via an upper joint 127. And a lower joint hose 130 via a lower joint 129 to a communication port 131 of the fuel tank 120.

[0003]

Conventionally, however, the gauge float 126 is caught on the curved portion between the inclined portion 125 and the vertical portion 123 of the gauge tube 122, so that the fuel oil May not be able to be measured accurately. SUMMARY OF THE INVENTION In view of the above problems, the present invention prevents a float for a gauge from being caught in a middle portion of a gauge pipe, thereby enabling more accurate measurement of the amount of oil in a tank.

[0004]

The technical solution of the present invention for solving the above-mentioned problem is to provide a straight gauge pipe 92, an upper connecting pipe 93 and a lower connecting pipe 94 separately,
Is supported vertically in the vicinity of the tank 10, a gauge float 95 is held in the gauge tube 92 so as to be vertically movable, and the upper connecting tube 93 is connected to the upper end of the gauge tube 92 and the upper side of the tank 10. The lower connection pipe 94 is connected to the lower end of the gauge pipe 92 and the lower side of the tank 10.

Another technical means of the present invention is that a gauge stay 101 is attached to a member 45 near the tank 10,
The straight gauge tube 92 is attached to the gauge stay 101.
Are supported in the vertical direction. Another technical means of the present invention is that the gauge stay 101 includes a mounting portion 102 arranged in the vertical direction, an upper support portion 103 bent from the upper end of the mounting portion 102, and a lower support portion 104 bent from the lower end of the mounting portion 102. Is mounted in a U-shape, and the mounting portion 102 of the gauge stay 101 is mounted on the member 45 near the tank 10, and the upper joint 9 is mounted on the upper support portion 103 of the gauge stay 101.
7 is attached, the lower joint 98 is attached to the lower support portion 104 of the gauge stay 101, and the upper joint 97 and the lower joint 98 are attached.
And the point that the gauge tube 92 is connected.

Another technical means of the present invention is that the tank 1
An oil supply pipe 108 for supplying oil in the tank 10 to the engine 9 side is inserted through the insertion hole 107 of the member 45 and led out to the engine 9 side. And the gauge stay 101
The gage stay 1 is closed so that the oil supply pipe 108 is prevented from moving in the communication hole 107 by closing a part of the insertion hole 107.
01 is attached to the member 45.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. 6 and 7, reference numeral 1 denotes a backhoe, and the backhoe 1 is mainly composed of an upper swing body 2 and a lower traveling device 3. Even if the swivel base 6 swings around a vertical axis, A small rear small turning backhoe having a rear surface side of the turning table 6 formed in an arc shape in a plan view so that the rear surface side of the turning table 6 does not protrude outside the left and right width of the traveling device 7.

The traveling device 3 comprises a traveling body 3 of a rubber crawler type driven by a hydraulic motor and a pair of left and right members provided on a traveling frame 3A.
Is provided. The revolving unit 2 includes a revolving base 6 supported on the traveling device 3 so as to be able to revolve right and left around a vertical axis.
Working device (digging device) 7 provided in front of swivel 6
A driver's seat 8 provided on a swivel 6, an engine 9,
Fuel tank 10, hydraulic pump 11, hydraulic oil tank 12,
The control valve 13, a radiator 14, an oil cooler 15, a reserve tank 16, a battery 17, and other various devices mounted on the swivel 6 are provided.

The driver's seat 8 is arranged to the left of the center of the swivel 6. As shown in FIG. 8, the swivel base 6 is attached and fixed to a swivel frame 19 and a rear portion of the swivel frame 19 so as to balance the weight of the front of the swivel table 6 with respect to the working device 7 and the like, and to adjust the rear of the swivel table 6. And a counter weight 20 that constitutes The right and left side surfaces, the front surface, the front surface of the driver's seat on the upper surface, and the like of the turning frame 19 are appropriately covered with a cover body 23 and the like. The revolving frame 19 includes a revolving board 22 supported on the traveling device 3 via a bearing 21 so as to be revolvable about a vertical axis, and a reinforcing member, various devices, and the like are mounted and fixed on the revolving board 22. Mounting members and the like are fixed.

A pair of upper and lower support brackets 26 are provided at the front of the swivel board 22 so as to protrude forward from the swivel 6.
A swing bracket 27 is supported by the support bracket 26 so as to be swingable right and left around the vertical axis. A boom 28 supported by the swing bracket 27 so as to be swingable about a horizontal axis, an arm 29 supported at a tip side of the boom 28 so as to be swingable about the horizontal axis, and a tip side of the arm 29 The working device 7 is mainly composed of a bucket 30 attached so as to be able to perform a squeeze and dump operation. The boom 28, the arm 29, and the bucket 30 are each composed of a boom cylinder 31, an arm cylinder 32, Operable by the cylinder 33.

The engine 9 is disposed horizontally behind the turning board 22 and behind the driver's seat 8, and a hydraulic pump 11 for supplying hydraulic oil to various hydraulic devices is disposed on the left side of the engine 9. A radiator 14, an oil cooler 15, a reserve tank 16 and a battery 17 are arranged on the right side of the vehicle, a fuel tank 10 is arranged on the front side of the engine 9 and on the left side of the swivel board 22, and is arranged on the front side of the engine 9 and turns. On the right side of the substrate 22 and in front of the radiator 14 and the like, a hydraulic oil tank 12 for storing hydraulic oil for operating hydraulic equipment is disposed. In front of the hydraulic oil tank 12, a control valve for controlling each hydraulic equipment is provided. The control valves 13 stacked in the vertical direction are arranged.

The engine 9, the radiator 14, the oil cooler 15, the hydraulic oil tank 12, the control valve 13, and the like project upward from the swivel 6.
The upper part, the front part, and the left part of the portion above the swivel 6 in the arrangement space of the hydraulic pump 11 are covered by a support frame 34 fixed to the swivel frame 19 and a fixed cover 35 fixed to the swivel frame 19. I have. The rear side of the portion above the swivel 6 in the space where the engine 9, the hydraulic pump 11, the radiator 14, and the like is disposed is a bonnet 3
The hood 36 is attached to the fixed cover 35 via a hinge so as to be vertically swingable, and can be opened and closed.

The hydraulic oil tank 12 and the control valve 13 are covered by a tank cover 37. The tank cover 37 extends to the right side of the fixed cover 35, and is configured to cover the radiator 14, the oil cooler 15, the reserve tank 16, the battery 17, and the like. The tank cover 37 has a front lower end pivotally attached to the revolving frame 19 by a hinge so as to be rotatable around a left-right axis. The tank cover 37 is pivoted upward and forward with the hinge as a fulcrum. Accordingly, the arrangement space for the hydraulic oil tank 12, the radiator 14, and the like is configured to be open.

In front of the driver's seat 8, a pair of left and right traveling control levers 38L and 38R for operating the right and left traveling bodies 4 separately are arranged. 39L and 39R are arranged. On the right control platform 39R, a boom / bucket operation lever 40 for operating the boom 28 and the bucket 30, a dozer operation lever 41 for operating the dozer 5, and an accelerator lever 42 for controlling engine rotation are operated. The lock lever 24 which disables or enables the operation of the boom 28 and the bucket 30 by the operation lever 40 for boom / bucket
And

The turning table 6L is provided on the left control table 39L.
A turning motor for turning the arm and a turning / arm operating lever 43 for operating the arm 29, and a lock lever 44 for disabling or enabling the turning motor and the arm 29 by the turning / arm operating lever 43 when operated. Provided. As shown in FIGS. 8 and 9, the revolving frame 19 is disposed and fixed vertically on the revolving board 22 in the left-right direction. The engine 9, the hydraulic pump 11, the radiator 15, the oil cooler 15, Arranged part such as battery 17, fuel tank 10, hydraulic oil tank 1
There is provided a partition wall 45 made of a plate material that partitions (partitions) the second and other arrangement portions.

The turning frame 19 is provided with a turning substrate 22.
A weight attachment body 46 is disposed and fixed on the upper rear end side. The weight attachment body 46 is formed of cast steel, serves as one end of the weight, and has a weight attachment portion 47 at both left and right sides and a central part in the left and right direction. The weight attachment body 46 includes a pair of left and right engine attachment portions 48 for attaching and fixing the rear lower end of the engine 9, and the leg portions 3 on the rear side of the support frame 34 that supports the fixed cover 35.
A pair of left and right support frame mounting portions 49 for mounting and fixing the lower end of the 4R are provided.

The radiator fan 50 provided on the right side of the engine 9 is of a suction type for sucking air from the outside, and an outside air intake is formed on the rear side of the side surface of the tank cover 37, so that the sucked air is provided. Is designed to escape below the swivel 6 or the like. The hydraulic oil tank 12
And the arrangement portion of the radiator 14 and the like are partitioned by the partition wall 45 and other partition members,
It is configured not to suck the air in the hydraulic oil tank 12 arrangement portion. In addition, the arrangement portion of the radiator 14 and the like and the arrangement portion of the engine 9 are also separated about the radiator 14. Further, the arrangement portion of the engine 9 and the arrangement portion of the driver's seat 8 are partitioned by the partition wall 45, the fixed cover 35, and other partition members.

On the center of the swivel board 22 in the left-right direction, a vertical rib made of a pair of left and right plate members is disposed vertically and extends from the front to the back of the swivel board 22 so as to intersect with the partition wall 45. 51L and 51R are fixed.
The front ends of the vertical ribs 51L, 51R are connected to the support bracket 26, and the rear ends of the vertical ribs 51L, 51R are connected to the weight mounting body 46. The partition wall 4
5 and the left and right outside of the left vertical rib 51L in the left and right direction are used as the arrangement portion of the fuel tank 10; The radiator 14, the oil cooler 15, the reserve tank 16, and the battery 17 are disposed on the rear side of the partition wall 45 and the left and right outer sides of the right vertical rib 51R, and are disposed on the rear side of the partition wall 45 and the radiator 14. The left side of the arranging portion such as is the arranging portion of the engine 9.

As shown in FIG. 2 to FIG.
The most part is housed inside the swivel 6, and a part is made to protrude from the swivel 6, and the projecting part is
A is provided, and this protruding portion is covered by a left portion of the fixed cover 35, and an opening 35A for refueling which can be opened and closed by a lid is formed on the left side of the fixed cover 35. Further, the fuel tank 10 is partially supported by a pair of left and right receiving stands 52L and 52R provided on the turning frame 19 so as to float above the turning board 22, and is provided at the bottom of the fuel tank 10. The outlet 56 and the drain port 57 are arranged between the left and right receiving stands 52L and 52R, and the discharge port 56 and the drain port 57 are configured so as not to interfere with the turning substrate.

The outlet 56 has an oil supply pipe 108.
Is connected, and fuel is sent to the engine 9 via the oil supply pipe 108. On the left side of the turning board 22 where the fuel tank 10 is disposed, a recess 53 is formed, which is recessed downward. The recess 53 is formed by cutting out a thick plate material that mainly forms the swivel board 22 and providing a closing plate 54 so as to cover the cutout portion 22a from the lower surface side. The left receiving base 52L is provided at the bottom of the concave portion 53, and the right receiving base 52R is provided on a thick plate material mainly constituting the swivel board 22.

If the heights of the left and right pedestals 52L and 52R are too high, most of the fuel tank 10 can be accommodated inside the swivel 6 by reducing the capacity of the fuel tank 10 or by moving the fuel tank 10 in the horizontal direction. However, the discharge port 56 and the drain port 57 are provided at positions corresponding to the concave portions 53, so that it is not necessary to make the height of the left and right receiving stands 52L and 52R too high. It works. The fuel tank 10 is positioned in the horizontal direction by being pressed against the partition wall 45 and the left vertical rib 51L, and is fixed by being pressed against the partition wall 45 and the left vertical rib 51L by the fixing means 58. Is done.

The contact portions 10B and 10C of the fuel tank 10 that contact the partition wall 45 and the left vertical rib 51L are formed in flat surfaces, and are configured to make surface contact with the partition wall 45 and the left vertical rib 51L. The fuel tank 10 is configured so that movement around the vertical axis is restricted. Fixing means 5
Reference numeral 8 denotes a band 59 applied to the left-right outer surface of the fuel tank 10 in the front-rear direction, as shown in FIGS. 10, 13 and 14, and a lock provided on the rear end side of the band 59. It mainly comprises a tool 60 and a fastener 61 provided between a front end side of the band 59 and a locking portion 62 provided on the swivel board 22.

The locking member 60 provided on the rear end of the band 59 is provided with a bolt 6 fixed to the rear end of the band 59.
4 and a nut 65 that is screwed to the bolt 64. The bolt 64 penetrates the partition wall 45,
By screwing the nut 65 to the bolt 64 from the rear side of the partition wall 45, the rear end side of the band 59 is locked (fixed) to the partition wall 45. On the other hand, a support plate 66 located on the left front side of the fuel tank 10 is erected on the swivel board 22, and a locking portion 62 formed by forming a bar into a U-shape is provided on the right end side of the support plate 66. Have been.

The fastening tool 61 includes a bolt 67 that penetrates the front end of the band 59 so as to be movable in the left-right direction, a nut 65 that is screwed to the bolt 67, and is fixed to the bolt 67. Hook member 6 hooked on portion 62
9 by hooking the hook member 69 on the locking portion 62 and tightening the nut 68.
The fuel tank 10 is divided by the partition wall 45 and the left vertical rib 5
The fuel tank 10 is configured to be pressed against 1 L to be fixed. Further, the fuel tank 10 is pressed by a pair of front and rear stays 70F and 70R which contact the upper surface of the front and rear portions of the fuel tank 10 from above,
Upward movement is restricted.

The front stay 70F is fixed to the support plate 66 by bolts and nuts, and the rear stay 70R is fixed to the partition wall 45 by bolts and nuts.
The bolt insertion holes for fixing the front and rear stays 70F and 70R are vertically long holes, and each of the front and rear stays
The vertical position of 0F, 70R can be adjusted. FIG.
As shown in FIG. 5, the fuel tank 10 is formed in a flat shape so as to have a small thickness (a dimension in the vertical direction), and a circumferential band is attached to a central portion in the vertical direction on one side surface of the fuel tank 10. A part 75 is provided. This band hanging part 7
Reference numeral 5 is for engaging and holding the band 59 with the fuel tank 10. The first step 76 engages one side (upper side) of the band 59 in the width direction and the other side (lower side) of the band 59. Side) engaging the second step portion 77.

The first step portion 76 and the second step portion 77 of the banding portion 75 are circumferentially displaced from each other so as not to oppose each other in the thickness direction (up and down direction) of the fuel tank 10 as shown in FIG. As shown in the figure, the side surface of the fuel tank 10 corresponding to the first step portion 76 and the thickness direction (vertical direction) is formed as a smooth surface without a concave portion from the lower end side to the first step portion 76, Further, it is formed with a smooth surface without a concave portion from the upper end side to the first step portion 76. FIG.
As shown in FIG. 6, the side surface of the fuel tank 10 corresponding to the second step portion 77 in the thickness direction is formed as a smooth surface without a concave portion from the upper end side to the second step portion 77, and the lower end side. It is formed with a smooth surface without a concave part from to the second step portion 77. Further, a fuel injection port 10 </ b> A of the fuel tank 10 is formed in an upward direction orthogonal to the band hooking portion 75.

Next, a method of forming the fuel tank 10 will be described. As shown in FIGS.
0, a first split mold 81 facing the fuel tank 10 in the thickness direction (vertical direction) and a second split mold 82.
Are provided. The first split mold 81 and the second split mold 82 shift the first step portion 76 and the second step portion 77 of the banding portion 75 in the circumferential direction so as not to oppose each other in the thickness direction of the fuel tank 10. Form. In this case, as shown in FIGS. 12 to 16, the mold 7 having the first split mold 81 and the second split mold 82.
9 is a first step portion 76 and a second step portion 77 of the fuel tank 10.
Is divided in the thickness direction (up and down) at the position, and the first split mold 81 and the second split mold 82 are divided at the boundary between the first step portion 76 and the second step portion 77 via the inclined joint surface 84. FIG.
As shown in FIG. 16, the first step portion 76 is formed by the second split mold 81, and the second step portion 77 is formed by the first split mold 82 as shown in FIG.

Therefore, after the fuel tank 10 is formed between the first split mold 81 and the second split mold 82 by injection molding or the like, the first step portion 76 and the second step portion 77 may be caught. Alternatively, the first split mold 81 and the second split mold 82 can be opened in the thickness direction (up and down) of the fuel tank 10 to easily remove the molded product of the fuel tank 10 from the mold 79. Moreover, since the first split mold 81 and the second split mold 82 face each other in the thickness direction, the split molds 81 and 82 can be formed shallowly.
The radius of the zero end a can be reduced as much as possible.

As shown in FIG. 1 to FIG.
Is provided with an oil gauge device 91 for measuring the amount of fuel oil in the fuel tank 10. The oil gauge device 91 includes a straight gauge pipe 92, a curved upper connection pipe (upper connection hose) 93, and a curved lower connection pipe (lower connection hose) 94 separately. Gauge tube 9
Numeral 2 is formed of a transparent synthetic resin or glass or the like, is supported in the vertical direction near the fuel tank 10, and has a gauge tube 9.
A float 95 for the gauge is held in the inside 2 so as to be vertically movable.

The upper connecting pipe 93 is connected to the upper end of the gauge pipe 92 and the upper side of the fuel tank 10 via the upper joint 97 and the outlet 105 of the fuel tank 10, and the lower connecting pipe 94 is connected to the lower joint. 98 and outlet 1 of fuel tank 10
06, the lower end of the gauge tube 92 and the fuel tank 10
And is connected to the lower side. A gauge stay 101 is attached to a partition wall 45 which is a member near the fuel tank 10. The gauge stay 101 includes a mounting portion 102 disposed in a vertical direction, an upper support portion 103 bent from the upper end of the mounting portion 102, and a lower support portion 1 bent from the lower end of the mounting portion 102.
04 in a U-shape.

The mounting portion 102 of the gauge stay 101 is mounted on a partition wall 45 which is a member near the fuel tank 10 by fasteners such as bolts or the like.
An upper joint 97 is attached to the upper support 103 of the 01 and a lower joint 98 is attached to the lower support 104 of the gauge stay 101. Between the upper joint 97 and the lower joint 98,
The gauge tube 92 is connected, and thereby the gauge stay 101 supports the straight gauge tube 92 in the vertical direction. As shown in FIG. 4, an insertion hole 107 is provided in a partition wall 45 which is a member near the fuel tank 10, and an oil supply pipe 108 for supplying fuel oil in the fuel tank 10 to the engine 9 side is provided. The oil supply pipe 108 is inserted into the insertion hole 107 of the partition wall 45 and led out to the engine 9 side. The gauge stay 101 closes a part of the insertion hole 107 so that the oil supply pipe 108 is prevented from moving in the communication hole 107. , A gauge stay 101 is attached to the partition wall 45.

As shown in FIG. 17, the hydraulic oil tank 12 has an opening 152 in a top wall 151 thereof.
A tank cover 153 that closes 52 is provided detachably. A cylindrical return pipe 154 is inserted and held in the tank cover 153, and the return pipe 154 is vertically penetrated through the top wall 151 of the hydraulic oil tank 12 through the opening 152. A return filter 155 is provided at a lower end of the return pipe 154, and a return pipe 157 is connected to a middle part of an upper side of the return pipe 154 via a connection pipe 156. The control oil is configured to return the hydraulic oil from the control valve 13 to the hydraulic oil tank 12 through the return pipe 157, the connection pipe 156, and the return pipe 154. A ventilation hole 158 is formed in the closed wall 154a at the upper end of the return pipe 154 so as to penetrate vertically inward and outward. Return pipe 154
A plug 159 for venting air to close the ventilation hole 158 is detachably fitted and held in the closing wall 154a.

Therefore, as shown in FIG. 17, the pipe 15 is returned to a position higher than the oil level of the hydraulic oil in the hydraulic oil tank 12.
7, when the return filter 155 attached to the lower end of the return pipe 154 is replaced, the return pipe 157
There is a risk of spilling the operation inside, but when the return filter 155 is replaced, the air vent plug 158 is removed and the vent hole 158 is opened to remove the air vent plug 158.
Air can flow from the outside into the return pipe 154 and the return pipe 157 from the ventilation hole 158, and the hydraulic oil can be discharged from the return pipe 154 and the return pipe 157 to the hydraulic oil tank 12 and the like, so that the hydraulic oil does not spill. It will be enough.

According to the above embodiment, the fuel tank 10
Is formed in a flat shape, and has, on its side surface, a first step portion 76 that engages one side in the width direction of the band 59 and a second step portion 77 that engages the other side in the width direction of the band 59. Is provided, and the first stepped portion 76 and the second stepped portion 77 of the banding portion 75 are circumferentially shifted from each other so as not to oppose each other in the thickness direction of the fuel tank 10. When forming a gauge stay for supporting the gauge tube 92 in the fuel tank 10, the fuel tank 10
Becomes complicated, and it becomes difficult to form the fuel tank 10 by injection molding or the like. However, in the above embodiment,
Since the gauge stay 101 is attached to the partition wall 45 which is a member near the fuel tank 10, the fuel tank 1
The structure of the fuel tank 10 is not complicated, and there is no inconvenience that the molding of the fuel tank 10 becomes difficult.

The oil gauge device 91 is provided with a straight gauge pipe 92, a curved upper connecting pipe 93, and a curved lower connecting pipe 94 separately, and the gauge pipe 92 is provided near the fuel tank 10. It is supported up and down and the gauge tube 9
Since the gauge float 95 is held in the vertical direction so that the gauge float 95 can be freely moved up and down, the gauge float 95 does not get caught in the middle of the gauge tube 92, and the amount of fuel oil in the fuel tank 10 can be accurately determined. Be able to measure. When the oil gauge device 91 is attached, the oil supply pipe 108 is connected to the discharge port 56, and the oil supply pipe 108 is inserted into the insertion hole 107 of the partition wall 45 and led out to the engine 9 side. The fuel oil is sent to the engine 9 through the oil supply pipe 108. Thereafter, the gauge stay 101 is attached to the partition wall 45 which is a member near the fuel tank 10, and a part of the insertion hole 107 is closed by the gauge stay 101 to restrict the movement of the oil supply pipe 108 in the communication hole 107. To do. Thus, the gauge stay 101 can be easily fixed to the vicinity of the fuel tank 10, and the gauge stay 101 can effectively prevent rattling or wobbling of the oil supply pipe 108.

In the above embodiment, the upper connecting pipe 93 of the oil gauge device 91 is connected to the upper end of the gauge pipe 92 and the upper side of the fuel tank 10, and the lower connecting pipe 94 is
The lower end of the gauge pipe 92 is connected to the lower side of the fuel tank 10. Instead, the upper connecting pipe 93 of the oil gauge device 91 is connected to the upper side of the fuel tank 10 by a connecting hose or the like. The lower connecting pipe 94 is connected through another member,
The lower part of the fuel tank 10 may be connected via another member such as a connection hose. In the above-described embodiment, the gauge stay 101 is attached to the partition wall 4545 as a member near the fuel tank 10, but instead of this, other members than the partition wall 45 may be attached.
The gauge stay 101 may be attached.

In the above embodiment, the fuel tank 1
0, the oil gauge device of the present invention is applied and implemented.
Instead, the oil gauge device of the present invention may be applied to a hydraulic oil tank or another tank.

[0038]

According to the present invention, the amount of oil in the tank 10 can be measured more accurately and reliably by preventing the gauge float 95 from being caught in the middle of the gauge tube 92.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a fuel tank mounting portion according to an embodiment of the present invention.

FIG. 2 is a plan view of a mounting portion of the fuel tank.

FIG. 3 is a side view of a mounting portion of the fuel tank.

FIG. 4 is a rear view of a mounting portion of the fuel tank.

FIG. 5 is a front view of a mounting portion of the fuel tank.

FIG. 6 is a side view of the backhoe.

FIG. 7 is a plan view of the backhoe.

FIG. 8 is a plan view of the turning frame.

FIG. 9 is a rear view of the turning frame and the like.

FIG. 10 is a plan view of a mounting portion of the fuel tank.

FIG. 11 is a side view of a mounting portion of the fuel tank.

FIG. 12 is a front view of the fuel tank.

FIG. 13 is a right side view of the fuel tank.

FIG. 14 is a left side view of the fuel tank.

FIG. 15 is a sectional view taken along the line AA of FIG. 12;

FIG. 16 is a sectional view taken along line BB of FIG.

FIG. 17 is a sectional view of the hydraulic oil tank.

FIG. 18 is a left side view of a fuel tank showing a conventional example.

[Explanation of symbols]

 Reference Signs List 10 fuel tank 91 oil gauge device 92 gauge pipe 93 upper connecting pipe 93 94 lower connecting pipe 94 95 gauge float 101 gauge stay 102 mounting part 103 upper supporting part 104 lower supporting part 107 insertion hole 108 oil supply pipe

Claims (4)

[Claims] 1. A straight gauge pipe (92), an upper connecting pipe (93) and a lower connecting pipe (94) are separately provided, and the gauge pipe (92) is vertically arranged near the tank (10). The gauge float (9) is supported in the gauge tube (92).
5) is held movably up and down, and the upper connecting pipe (93) is
The upper end of the gauge pipe (92) is connected to the upper side of the tank (10), and the lower connecting pipe (94) is connected to the lower end of the gauge pipe (92) and the lower side of the tank (10). An oil gauge device characterized by that: 2. A member (45) near the tank (10).
2. The oil gauge device according to claim 1, wherein a gauge stay (101) is attached to the gage stay, and the linear gauge tube (92) is vertically supported on the gauge stay (101). . 3. The gauge stay (101) has a mounting portion (102) arranged vertically and an upper support portion (103) bent from an upper end of the mounting portion (102) and a mounting portion (102).
A lower support portion (104) bent from the lower end has a U-shape, and an attachment portion (102) of the gauge stay (101) is attached to a member (45) near the tank (10). An upper joint (97) is attached to the upper support (103) of the (101), a lower joint (98) is attached to the lower support (104) of the gauge stay (101), and the upper joint (97) and the lower joint are attached. The oil gauge device according to claim 1, wherein the gauge tube (92) is connected to the oil gauge (98). 4. A member (4) near the tank (10).
5) is provided with an insertion hole (107), and an oil supply pipe (108) for supplying oil in the tank (10) to the engine (9) side is provided with an insertion hole (10) of the member (45).
7) is guided to the engine (9) side, and the gauge stay (101) closes a part of the insertion hole (107) to restrict the movement of the oil supply pipe (108) in the communication hole (107). The gauge stay (101) is attached to the member (45) so as to perform the operation.
Or the oil gauge device according to 3.