JPH0616063A - Oil transfer pump driving device in tank rolly - Google Patents

Abstract

PURPOSE:To eliminate the need for an exclusive motor to drive an oil transfer pump, to make the device in a compact size, and to make the structure simple, by composing the system to drive the oil transfer pump by utilizing a power source of the tank rolly itself. CONSTITUTION:A power takeoff system 2 is provided to a power transmission system 1 at the front end (an operation chamber side) of a tank rolly, and the front end of a drive shaft 3 is connected to the power takeoff system. While this drive shaft 3 is held to a bearing 4 provided to a chassis frame F, it is connected to a universal joint 5, a transmission gear 6, and an overload cutoff device 7. Furthermore, the rear end of the drive shaft 3 is connected to an oil transfer pump P. As a result, the oil transfer pump P can be driven by utilizing a power source of the tank rolly itself.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drive device for an oil feed pump for sending oil in a tank of a tank truck to the outside.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 1, a tank truck T has a tank T inclined rearward and
An oil feed pipe S is arranged along the bottom of the tank T, and the oil feed pipe S is connected to an oil feed pump P installed at the rear end of the chassis frame F so that the oil in the tank T is discharged to the outside by the pump P. Although a tank truck for sending out is used, a motor for driving the oil sending pump P is generally provided near the oil sending pump P, which causes a problem that the device becomes large.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems of the prior art, and to propose a reasonably priced oil pump driving device.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to a first aspect of the present invention, in which an oil feed pump P installed at a rear end portion of a chassis frame F of a tank truck is provided inside the tank T. In a tank truck that is configured to send out oil, a power transmission device (power transmission system) 1 at a front end portion (driver's cab side) of the tank truck is provided with a power take-off device (power take-off system) 2, and a front end of a drive shaft 3 is provided therewith. The drive shaft 3 is supported by a bearing 4 provided on the chassis frame F, and is also connected to a universal joint 5, a transmission gear 6, and an overload cutoff device 7.
The rear shaft of the drive shaft 3 is connected to the oil feed pump P.

According to a second aspect of the present invention, the overload cutoff device 7 comprises a brake lining clutch.
It has the configuration described.

[0006] According to a third aspect of the present invention, the rubber 8 for the axle is interposed between the drive shaft 3 and the axle casing G.

According to a fourth aspect of the present invention, the split sleeve 9 is fitted and fixed to the outer peripheral side of the drive shaft 3, and the drive shaft 3 is supported by the bearing 4 via the split sleeve 9. The configuration described in any one of 3 is adopted.

[0008]

According to claim 1 of the present invention, a long drive shaft 3 is connected to a power take-off device (power take-off system) 2 attached to a power transmission device (power transmission system) 1, and this drive shaft 3 is connected.
The power take-off system (power take-off system) 2 at the front end of the tank truck is connected to the oil feed pump P at the rear end of the chassis frame F, and the oil feed pump P is driven using the power source of the tank truck itself. As a result, the motor for driving the oil feed pump is not separately required, so that the device can be downsized and the configuration can be simplified.

Further, the drive shaft 3 is supported by a plurality of bearings 4 from its front end portion to its rear end portion, and a universal joint 5 and a transmission gear 6 are interposed in the middle thereof so as to avoid the chassis frame F and be connected. Because
The chassis frame F requires almost no processing and can be easily attached to an existing tank truck.

Further, since the drive shaft 3 is provided with the overload cutoff device 7 in the middle thereof, the drive shaft 3
If there is an overload, the drive shaft 3 itself or the oil pump P or the power take-off device (power take-off system) connected to the drive shaft 3 itself is cut off instantly.
No damage to 2.

According to the second aspect of the invention, since the overload cutoff device 7 is composed of a brake lining clutch, the transmission force of the overload applied to the drive shaft 3 is instantly cut off, and the overload is prevented. When it disappears, it immediately returns to the current state, so the time for suspending the use of the oil feed pump can be very short.

According to the third aspect of the present invention, since the rubber 8 for the axle is interposed between the drive shaft 3 and the axle casing G, even if the axle casing G greatly bounds while the tank truck is traveling, the drive shaft Three
Will not be damaged.

According to the fourth aspect, the split sleeve 9 is fitted and fixed to the outer peripheral side of the drive shaft 3, and the drive shaft 3 is supported by the bearing 4 via the split sleeve 9. When the bearing 4 is externally fitted to the split sleeve 9 when the drive shaft 3 is mounted, the bearing 4 is easily fitted to the drive shaft 3 because there is a gap between the split sleeve 9 and the drive shaft 3. Can be fitted to the drive shaft 3, and the bearing 4 can be securely fixed to the drive shaft 3 by welding the split sleeve 9 to the drive shaft 3 after attaching the bearing 4 to a predetermined position.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG.
1 shows an appearance of an embodiment of the present invention, in which a tank T is provided rearward and downward with respect to a chassis frame F, an oil feed pipe S is arranged along the bottom of the tank T, and Oil pump P installed at the rear end of F
To the outlet 10.

A power transmission device (power transmission system) 1 is generally provided on the driver's cab side, which is the front end of the chassis frame F, and a power take-off device (power take-off system) 2 is attached to the power transmission device 1. A front end portion of the drive shaft 3 is connected to an output shaft of the power takeoff device 2, and a rear end portion of the drive shaft 3 is connected to a drive shaft of the oil feed pump P.

2 and 3 show a state in which the drive shaft 3 is attached to the chassis frame F by the bearing 4, and the drive shaft 3 has a universal joint 5 and a transmission gear 6 in the middle thereof so that the chassis can be obtained. The frame F can be attached so as to be avoided, so that the chassis frame F is not processed as much as possible. Further, the axle of the rear wheel R of the tank truck is protected by the casing G so as to bounce up and down while traveling, but the axle casing G and the drive shaft 3 arranged on the upper side thereof.
A rubber 8 per axle is interposed between and.

FIG. 4 shows the details of the overload cutoff device 7, in which bolts 12 are provided at appropriate intervals in the circumferential direction near the outer circumference of the power side disk plate 11 so that the power side disk plate 11 has a smaller diameter than the plate 11. One brake plate 13, the pump-side disc plate 14, and the other brake plate 15 are sequentially applied with the brake lining, and the brake adjusting plate 16 is applied to the brake plate 15, and the plate 16 is A bolt 18 is loosely fitted to the bolt 12, and a pressing force of a spring 18 interposed between a plate 17 and a nut 17 screwed into the bolt 12 is applied to the brake adjusting plate 15.

The power-side shaft member 3a is attached to the boss portion 19 at the center of the power-side disk plate 11 by the bolt 20.
The universal joint 5 is connected to the boss portion 21 of the pump side disk plate 14 by the bolt 22, and the joint 5 is connected to the pump side shaft member 3b.
Are designed to be connected.

Therefore, the rotational force of the power-side shaft member 3a is the braking force due to the frictional resistance between the plates 11, 13, 14, 15, 16 and the pump-side shaft member 3a.
When the shaft member 3a or 3b on either side receives a load larger than the break force, the transmission force is cut off, and when the overload disappears, the transmission force is immediately transmitted. Is recovering. This braking force is adjusted by changing the tightening amount of the nut 17 that adjusts the spring force of the spring 18.

As shown in FIG. 5, the bearing 4 supporting the drive shaft 3 is fixed to the drive shaft 3 via a split sleeve 9. That is, as shown in FIG. 6, with the retainer 4a of the bearing 4 fitted to the outer peripheral side of the split sleeve 9 in which a part of the sleeve is cut across in the axial direction, the split sleeve 9 is inserted from one end side of the drive shaft 3. Loose fit,
Both ends of the split sleeve 9 are welded and fixed to the drive shaft 3 at predetermined positions, while the bearing 4 is fixed as shown in FIG.
The bearing 4 having one end fixed to the chassis frame F is axially attached to the drive shaft 3 by fixing the bearing 4 to the split sleeve 9 by pressing the set screw 23 screwed into the retainer 4 a of the drive shaft 3 against the split sleeve 9. It is fixed so that it cannot be moved. By thus inserting the split sleeve 9 between the drive shaft 3 and the bearing 4, the bearing 4 can be easily attached to the long drive shaft 3.

A spline groove 25 is formed in the boss portion 24 of the universal joint 5 attached to the end portion of the drive shaft 3, and a spline 26 formed in the outer peripheral surface of one end of the drive shaft 3 is engaged with the spline groove 25. Universal joint 5 and drive shaft 3
Although they rotate integrally with each other, they can move freely with respect to each other in the axial direction. As a result, the axial movement of the drive shaft 3 during rotation is absorbed by the spline portions 25 and 26.

As shown in FIG. 2, on the rear side of the chassis frame F, the axle casing G of the rear wheel R becomes an obstacle, so it is necessary to arrange the drive shaft 3 in an inclined manner as shown in the drawing. Therefore, since the drive shaft of the oil feed pump P located at the rear end of the chassis frame F does not coincide with the drive shaft, a three-stage transmission gear 6 is interposed between the two to link them together. Further, as shown in FIG. 5, an axle rubber 8 is attached to the chassis frame F between the drive shaft 3 and the axle casing G, and when the axle casing G is suddenly bound, the rubber 8 is attached.
Is taken into consideration so that the axle casing G does not collide with the drive shaft 3.

Accordingly, the rotational force from the power take-out device (power take-off system) 2 is transmitted to the oil feed pump P by the drive shaft 3 having the universal joint 5 and the transmission gear 6 interposed therein, and the pump P drives the inside of the tank T. Oil is sent to the outside through the oil feed pipe S.

When the drive shaft 3 receives an abnormal load such as when the residual liquid in the oil feed pump P is frozen or solidified or the bearing in the pump is damaged, an overload occurs. The cutoff device 7 works to prevent the rotational force of the drive shaft 3 from being transmitted to the oil feed pump P side, so that the oil feed pump P or the drive shaft 3 or the power take-off system 2 connected to the drive shaft 3 is not damaged. It is designed to prevent the occurrence.

[0025]

According to the first aspect of the present invention, since the oil pump is driven by using the power source of the tank truck itself, a separate motor for driving the oil pump is not required. Can be manufactured at low cost because the size is reduced and the configuration is simplified.

Moreover, according to the first aspect, it is practical that the chassis frame of the tank truck hardly needs to be processed and can be easily attached to the existing tank truck.

According to the first aspect of the present invention, an overload received by the drive shaft is instantaneously shut off, and the drive shaft itself or an oil feed pump or a power take-off device (power take-off system) connected to the drive shaft itself is provided. It can be used stably for a long time without damage.

According to the second aspect of the present invention, when the drive shaft 3 receives an overload, its transmission force is instantaneously cut off, and when the overload disappears, the current state is immediately restored. It can be used efficiently with very little time to suspend use.

According to the second aspect, the overload adjustment peculiar to the brake lining clutch can be extremely easily performed, and the clutch can be adjusted according to the type of oil in the tank, the pressure fed by the oil pump, or the clutch. It can be easily adjusted according to the wear of.

Further, according to the third aspect of the present invention, since the axle bearing rubber is interposed between the drive shaft and the axle casing, the drive shaft and the axle are damaged even if the axle casing significantly bounds while the tank truck is running. It can be used safely without doing.

According to claim 4, the bearing can be easily and quickly attached to the long drive shaft, and the manufacture is easy.

[Brief description of drawings]

FIG. 1 is an external view of an embodiment of the present invention.

FIG. 2 is a front view of an embodiment of the present invention.

FIG. 3 is a plan view of the same.

FIG. 4 is an enlarged sectional view of the main part.

FIG. 5 is an enlarged front view of another main part of the same.

6 is a cross-sectional view taken along the line AA in FIG.

[Explanation of symbols]

1 power transmission device (power transmission system) 2 power extraction device (power take-off system) 3 drive shaft 4 bearing 5 universal joint 6 transmission gear 7 overload cutoff device 8 rubber per axle 9 split sleeve T tank S oil pipe F chassis frame P Oil pump G axle casing

Claims (4)

[Claims] 1. A tank truck in which oil in a tank is sent by an oil feed pump installed at a rear end portion of a chassis frame of the tank truck, and a power transmission device (power transmission system) at a front end portion (driver's cab side) of the tank truck. ) Is equipped with a power take-off device (power take-off system), and the front end of the drive shaft is connected to the power take-off system. The drive shaft is supported by a bearing provided on the chassis frame, and also has a universal joint, a transmission gear and an overload cutoff. An oil feed pump drive device in a tank truck, which is connected to the device and whose rear end is connected to an oil feed pump. 2. The oil feed pump drive device for a tank truck according to claim 1, wherein the overload cutoff device comprises a brake lining clutch. 3. An oil feed pump drive device for a tank truck according to claim 1, wherein rubber for axle contact is provided between the drive shaft and the axle. 4. An oil feed pump drive for a tank truck according to claim 1, wherein a split sleeve is fitted and fixed on the outer peripheral side of the drive shaft, and the drive shaft is supported by a bearing through the split sleeve. apparatus.