JPH0798461B2 - Oil pump drive device for tank truck - Google Patents

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 In order to solve this conventional problem, the present invention provides a power source for the tank truck itself.
Drive the oil pump by using the oil pump
Is to shall aims to provide a braking system. Also,
In the case of a tank truck, a power transmission device as its power source
(Power transmission system) is in front of Raleigh
Oil pump at the rear end of the lorry at the end
Drive shaft must be quite long to transfer
Does not bend or twist the drive shaft.
Which strength problem and also the axle on the rear wheel of the lorry
There is a casing, and the rear axle is
Since it is designed to bounce up and down,
When installing the shaft, the above-mentioned axle casing
And the chassis frame must be specially processed.
There is also the problem of saying that it must be done. Therefore, other
The purpose is to solve the problems peculiar to such a tank truck.
It is an object of the present invention to provide an oil feed pump drive device that can be used.

[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 lorry controls the inside of 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. Parts of the oil pump P and the rear end of the oil pump P.
The drive shaft 3 is divided into a plurality of parts and the divided end thereof is formed.
Connect the parts with a universal joint 5 and
While supporting the bearing 4 provided on the chassis frame F,
Oil transfer from the force extraction device 2 side along the chassis frame F
Rear wheel drive that extends to the pump P side and passes through the rear wheel R
The shaft 3 is arranged in an inclined shape from the front side of the rear wheel to the rear side.
The rear wheel drive shaft 3 and the oil feed pump P.
The drive shaft 3 on the pump side, which is connected, has a plurality of upper and lower stages.
And the rear wheel side drive
Between the live shaft 3 and the rear axle casing G
Rubber 8 is inserted per shaft, and further drive shaft 3 has
A configuration in which an overload cutoff device 7 is provided in the middle is adopted.

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

[0007] In the third aspect, the drive shaft 3 via a該割Ri sleeve 9 and fixedly fitted to the split sleeve 9 on the outer peripheral side of the drive shaft 3 is supported by the bearing 4 claim 1 or The configuration described in 2 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.

[0009] Moreover the drive shaft 3 is divided into a plurality of drive shaft 3 between reaching the rear end from the front end
Universal joint that is composed of its split ends
5 are connected by a plurality of bearings 4
Driven to chassis frame F because it is supported
The shaft 3 can be easily attached and the drive shaft
There is no bending or twisting on the shaft 3
Power from the projecting device 2 is sent to the oil feed pump P without difficulty.
Can be communicated to. Then, the rear wheel drive system that passes through the rear wheel R
The chaft 3 is arranged in an inclined shape from the front side of the rear wheel to the rear side.
The rear wheel drive shaft 3 and the oil feed pump P.
The pump-side drive shaft 3 that is connected is in a plurality of upper and lower stages.
The rear wheel axle is linked by the transmission gear 6
The casing G does not hinder the drive shaft 3.
In addition, there is no need to process the chassis frame F.
Since it does not have any, it can be easily and easily attached to an existing tank truck.
You can kick. And again, this rear wheel side drive
Vehicle interposed between the chaft 3 and the rear wheel axle casing G
With rubber 8 per shaft, this can be done while the tank truck is running.
Even if the axle casing G of the
It does not damage the chaft 3 .

Further, since the drive shaft 3 is provided with an overload cutoff device 7 in the middle thereof , foreign matter is not attached to the oil feed pump P.
Are mixed in or oil is solidified in the pump P,
When the live shaft 3 is overloaded, it is instantaneously shut off, and the drive shaft 3 itself, the oil feed pump P or the power take-off system 2 connected to the drive shaft 3 are not damaged.

[0011] According to claim 2, since the overload blocking device 7 consists of brake linings clutch, oil feed
Foreign matter is mixed in the pump P or oil is solidified in the pump P.
The drive shaft 3 is overloaded.
In that case, the transmission force is instantly cut off, and the current state is immediately restored when the overload disappears, so that the time for suspending the use of the oil feed pump can be very short.

According to the third 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 is divided into a plurality of parts.
Connect the divided ends with a universal joint 5.
Supported by the bearing 4 provided on the chassis frame F
Then, along the chassis frame F from the power take-off device 2 side
Is extended to the oil feed pump P side, and the transmission gear 6 is interposed in the middle thereof so that the chassis frame F can be avoided and attached to the chassis frame F as much as possible. It is designed not to be processed. 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 during traveling, but between the axle casing G and the drive shaft 3 arranged on the upper side thereof. Rubber 8 per axle
Is installed.

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 plurality of upper and lower stages, for example, three stages of transmission gears 6 are provided between the two.
The two are connected in an interlocking state with the interposition of. Further, as shown in FIG. 5, the rubber 8 per axle is attached to the chassis frame F between the drive shaft 3 and the axle casing G, so that the rubber 8 per axle is prevented from being suddenly bounded by the axle casing G. Care is taken so that the drive shaft 3 does not collide with the axle casing G.

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 claim 1, the total length of the shaft is
Even though it becomes very long,
The drive shaft can be easily installed and
The shaft does not bend or twist,
Power from the force take-out device can be reliably transmitted to the oil pump.
Can be communicated to. In addition, the rear axle casing is
It does not hurt the rafts at all, requires almost no processing on the chassis frame of the tank truck, and can be easily and easily attached to the existing tank truck,
Very practical.

According to claim 1, the drive shaft
Axle rubber is interposed between the shaft and the axle casing.
As a result, the axle casing
The drive shaft and axles
It can be used safely without being damaged, and it will instantly shut off any overload on the drive shaft, and the drive shaft itself or the oil pump or power connected to it. The take-out device (power take-off system) can be used stably for a long period 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.

According to claim 3 , 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 (3)

[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 system, to which the front end of the drive shaft is connected and whose rear end is connected to the oil feed pump.
The drive shaft is divided into a plurality of parts
When connecting the split ends with a universal joint,
While supporting the bearings on the chassis frame,
Oil pump along the chassis frame from the force extractor side
Drive shaft that extends to the drive side and passes through the rear wheels
Is arranged in an upward slope from the front side of the rear wheel to the rear side.
Side drive shaft and pump connected to oil pump
Side drive shaft and upper and lower transmission gears
In addition to being linked together, the rear drive shaft and rear wheel
Rubber is used for each axle between the axles and further drive
The oil pump drive device in the tank truck that has an overload cutoff device on the shaft . 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. A split three on the outer peripheral side of the drive shaft
Fits and secures the sleeve, and drives through the split sleeve.
The oil feed pump drive device in the tank truck according to claim 1 or 2, wherein the shaft is supported by a bearing .