JP7178149B1 - Propeller shaft nipple position adjustment device and adjustment method - Google Patents

Abstract

A propeller shaft nipple position adjusting device and adjusting method for adjusting a grease injection hole (nipple) of a propeller shaft to a position suitable for greasing work in a propeller shaft provided in a large vehicle such as a truck. The task is to provide A propeller shaft nipple position adjustment characterized by comprising one wheel rotating device having a pair of front and rear rotating rollers for rotating the wheel on which only one of the left and right wheels of the vehicle is placed. Apparatus and propeller shaft nipple positioning method using the propeller shaft nipple positioning apparatus. [Selection drawing] Fig. 1

Description

The present invention relates to an apparatus and method for rotating a propeller shaft provided on a large vehicle such as a truck.

A propeller shaft provided in a large-sized vehicle such as a truck needs to be lubricated periodically or depending on how the vehicle is used.
The propeller shaft is provided with a grease injection port (nipple) at one or a plurality of locations, and grease is injected through this grease injection port.
Since the propeller shaft is located at the bottom of a large vehicle such as a truck, in order to inject grease into the grease inlet, it is necessary to crawl into a narrow space under the vehicle to perform the injection work.
In order to avoid this, there is also a method in which a groove is provided in the workshop where people can enter and perform various operations, and a large vehicle such as a truck is parked above the groove to perform the grease injection work. However, the number of workshops equipped with such equipment is small, and it is troublesome, time-consuming, and expensive to move a large vehicle such as a truck to such a workshop each time grease is injected. This, on the contrary, leads to refraining from injecting grease, which may cause breakdowns of large vehicles such as trucks.

Also, depending on the position of the grease filling port, the filling work may be extremely difficult, even when filling in a narrow space under the vehicle, or when filling in a groove for work. becomes difficult.
For example, if there is a grease inlet on the back side of the worker's eye, he or she will have to grope around to find the grease inlet and use a flexible hose nozzle that can be bent freely to inject grease, but this is not an easy task either. .

Therefore, it is necessary to rotate the propeller shaft in order to adjust the grease inlet to a position that is easy to work with. are needed, but there are few workshops equipped with equipment for lifting the bodies of large vehicles such as trucks.

Therefore, in order to align the grease inlet at a position that is easy to work with, you need to move a large vehicle such as a truck a little, rotate the propeller shaft slightly, and check the position of the grease inlet many times. was going In addition, the following accident cases have been reported in this work.
[Accident example 1]
After moving the dump truck a little and rotating the propeller shaft, before going under the vehicle to check the grease inlet position, it is necessary to apply the parking brake and chock the wheels for safety. While repeating the same work many times, I forgot to apply the parking brake and chock the wheels, and the dump truck started moving while working under the vehicle, and I was run over by the dump truck tires. It's gone. (See Figure 7)

In addition, in a vehicle such as a dump truck that can raise the bed, it is possible to raise the bed and perform grease-up work from above the propeller shaft.
However, the following accidents have been reported.
[Accident example 2]
When the cargo bed of a dump truck is raised, it is necessary to lock it to prevent it from falling for safety. It came down and got caught between the loading platform and the body frame. (See Figure 8)

As a method of rotating the propeller shaft in order to align the positions of the grease injection holes of the propeller shaft, instead of lifting the vehicle body, the tire is placed on a rotating roller as shown in Patent Document 1, and the tire is rotated. It is conceivable to use equipment that rotates and performs various inspections, but the number of workshops equipped with such equipment is small, and since it is originally used for inspection, the idea is to use it for greasing work. There was no.

JP 2021-18077 A

As described above, there is no known device or facility for safely and easily greasing a propeller shaft provided in a large vehicle such as a truck. This inspection device is a large-scale facility equipped with rollers on which all the front, rear, left, and right tires are placed, is expensive, and can be easily used for grease-up work of propeller shafts of large vehicles such as trucks, which is relatively frequently performed. It's not possible.

Accordingly, the present invention provides a propeller shaft nipple position adjusting device that adjusts the grease injection hole (nipple) of the propeller shaft to a position suitable for the greasing work in the greasing work of the propeller shaft provided in a large vehicle such as a truck. An object of the present invention is to provide an adjustment method.

In order to solve the above problems, the present invention has the following configurations.
1. A propeller shaft nipple position adjusting device, comprising: a wheel rotating device having a pair of front and rear rotating rollers for rotating one of right and left wheels of a vehicle.

The present invention provides a propeller shaft nipple that is small and can be manufactured at low cost by providing one wheel rotating device having a pair of front and rear rotating rollers on which only one of the left and right wheels of a vehicle is placed and rotating the wheel. By adjusting the nipple position of the propeller shaft of a large vehicle such as a truck with the position adjusting device, the propeller shaft can be safely and easily greased.

1 is a perspective view of a propeller shaft nipple position adjusting device 1 of Embodiment 1 according to the present invention; FIG. 1 is an enlarged view of a main portion of a propeller shaft nipple position adjusting device 1 according to Embodiment 1 of the present invention when in use; FIG. Fig. 2 is an enlarged view of a main portion of the propeller shaft nipple position adjusting device 1 of Embodiment 1 according to the present invention when it is retracted; 1 is a side view of a state in which a propeller shaft nipple position adjusting device 1 according to Embodiment 1 of the present invention is used in a dump truck 7; FIG. 1 is a top view of a state in which a propeller shaft nipple position adjusting device 1 according to Embodiment 1 of the present invention is used in a dump truck 7; FIG. FIG. 7 is a side view of the propeller shaft nipple position adjusting device 1 of Embodiment 2 according to the present invention when it is used. 1 is a side view of a dump truck for explaining accident example 1; FIG. FIG. 11 is a side view of the dump truck for explaining accident example 2;

[Embodiment 1]
A propeller shaft nipple position adjusting device 1 according to Embodiment 1 of the present invention will be described below with reference to the drawings.
In the following description, the same reference numerals in different figures denote portions having the same function, and duplication of description in each figure will be omitted as appropriate.

[Background of invention]
The inventors of the present invention have found that when only one of the left and right wheels spins on snow or mud due to the operation of a differential provided on the drive shaft of the drive wheels of a vehicle, the other wheel will From the phenomenon that power is not transmitted and does not rotate, I came up with the idea that even if one of the left and right wheels is on the ground and does not rotate, if the other wheel is rotated, the propeller shaft will rotate. Therefore, when the clutch connecting the engine and the propeller shaft was disengaged or the transmission was put in neutral, and one of the left and right rear wheels, which are the drive wheels, was rotated, it was confirmed that the propeller shaft actually rotated.
Furthermore, even in a large vehicle with two rear wheels that are driving wheels, one of the wheels on the left and right of the two axles is grounded to prevent it from rotating. It was found that rotating the wheel caused the propeller shaft to rotate. In addition to the differential corresponding to the rotated wheels, the front wheel of the two rear wheels (hereinafter referred to as "rear front wheel") and the rear wheel (hereinafter referred to as "rear wheel") ) was found to be due to the operation of the inter-axle differential that adjusts the difference in rotation speed.
In particular, an inter-axle differential that transmits power from the inter-axle differential to the rear-rear differential when the left and right rear wheels and one of the left and right rear wheels are kept on the ground while the other left and right rear wheels are rotated. Both the propeller shaft and the propeller shaft that transmits power from the engine to the interaxle differential rotate. If one of the left and right rear wheels and one of the left and right rear front wheels is rotated while one of the left and right rear wheels is on the ground, the inter-axle propeller shaft does not rotate, but the propeller shaft rotates.
Based on this idea, the inventors of the present invention can rotate the propeller shaft with a device that only rotates one of the left and right drive wheels without the need for large-scale equipment, making it possible to adjust the nipple position during greasing work. We have invented a propeller shaft nipple position adjustment device that can be performed safely and easily.

[Overall structure]
FIG. 1 is a perspective view of a propeller shaft nipple position adjusting device 1 of Embodiment 1. FIG.
The propeller shaft nipple position adjusting device 1 has a wheel rotating device in which a driving roller 3 and a driven roller 4 are fixed to a frame 2, and also includes a stop auxiliary device 5 and the like. This propeller shaft nipple position adjusting device 1 is portable and can be carried by a single operator.

[flame]
The frame 2 is made of steel parts, and has the driving roller 3 and the driven roller 3 of the main body and the driven roller 21 on one side of the main body 21 to which the driving roller 3, the driven roller 4, the auxiliary stop device 5, the idling prevention stopper 42, etc. are fixed. A slant portion 22 forming a slanted path for placing a wheel on the roller 4 is formed. A wheel stopper 23 for stopping the wheel is formed.
In addition, on the side portion corresponding to the lateral outer side of the body portion 21, a derailment prevention bar 24 that prevents the wheel from derailing sideways is formed across the inclined portion 22. This derailment prevention bar is formed. 24 has a black and yellow diagonal stripe pattern so that the driver can easily see the derailment prevention bar 24 when the wheel is placed on the driving roller 3 and the driven roller 4. . In the first embodiment, it is assumed that the right wheel is mounted on the propeller shaft nipple position adjusting device 1 for use. A derailing prevention bar 24 is installed.
The derailment prevention bar 24 may be installed at a location corresponding to the left outside of the vehicle instead of the location corresponding to the right outside of the vehicle, or may be installed on both sides.
Although the inclined portion 22 is formed in a ladder shape in order to reduce the weight of the propeller shaft nipple position adjusting device 1, it may be formed by a plate-like member.

[Pair of rotating rollers]
FIG. 2 is an enlarged view of the main part of the propeller shaft nipple position adjusting device 1 of Embodiment 1 when in use, and FIG. 3 is an enlarged view of the main part of the propeller shaft nipple position adjusting device 1 of Embodiment 1 when it is withdrawn. be.
A pair of front and rear rotating rollers including a driving roller 3 and a driven roller 4 are pivotally supported on the main body 21 of the propeller shaft nipple position adjusting device 1 . In the first embodiment, the driven roller 4 is arranged on the inclined portion 22 side (front side) and the driving roller 3 is arranged on the wheel stopper 23 side (rear side). It is possible to arbitrarily choose whether to set the position as such, and the arrangement of the driving roller 3 and the driven roller 4 in the first embodiment may be reversed.
Further, if the driving roller 3 and the driven roller 4 are designed to have a width that is considerably wider than the width of the wheel, the driving when the wheel is placed on the pair of front and rear rotating rollers is facilitated. Further, since the rear wheels of large vehicles such as trucks are often equipped with double tires in which two wheels are arranged adjacent to each other on the left and right sides, the width of the driving roller 3 and the driven roller 4 is also the width of the double tires. If the width is designed to correspond to , it can be used for many kinds of vehicles.
One of the pair of front and rear rotating rollers is the driving roller and the other is the driven roller, but both may be driving rollers.

[Drive roller]
The driving roller 3 is driven by a driving device 31 (see FIG. 1) installed in the body portion 21 . The driving device 31 is composed of a motor and gears (not shown).
The driving device 31 is operated by a "rotation" button and a "stop" button provided on the controller 311 (see FIG. 5). Furthermore, an operation device for changing the rotational speed, for example, a device that can select a predetermined rotational speed with a changeover switch, or a device that can change a plurality of predetermined rotational speeds or steplessly change the rotational speed with a rotary switch may be provided. . The drive roller 3 may be configured to be rotatable in both forward and reverse directions.
Further, although the driving device 31 and the controller 311 are connected by wire in the first embodiment, they may be connected by a wireless device. The wireless device may be one that uses known infrared rays, or one that uses radio waves. Alternatively, the controller 311 may be an existing mobile terminal device such as an application installed in a smart phone, and communication with the smart phone may use WiFi (registered trademark), Bluetooth (registered trademark), or the like.
Moreover, the peripheral surface of the drive roller 3 may be provided with projections to prevent the wheels from slipping. The shape and size of the protrusions can be appropriately designed, and they may simply be roughened.
When both the pair of front and rear rotating rollers are driven rollers, the two rotating rollers may be driven by different motors, or the power of one motor may be driven by a known transmission mechanism such as gears, chains, and belts. , may be transmitted to the two rotating rollers.
Further, the drive device 31 is not limited to one that uses a motor, and may use another power source such as an engine, or may be a device driven by human power.

[Stop auxiliary device]
The first embodiment includes a stop auxiliary device 5 (see FIG. 1) for driving a large vehicle such as a truck and stopping the wheels on the pair of front and rear rotating rollers of the propeller shaft nipple position adjusting device 1. there is
The stop assist device 5 has a wheel-mounted detector 51 and a stop lamp 52 . The wheel mounting detector 51 has a small-diameter idle roller 511 installed between the driving roller 3 and the driven roller 4 of the main body 21 , and the small-diameter idle roller 511 is supported by a pair of left and right arms 512 . and is biased by a spring (not shown) in the direction of upward projection. When the wheels rest correctly on the drive roller 3 and the driven roller 4, the idler roller 511 is pushed downward against the spring.
A limit switch (not shown) is installed near one arm 512 of the pair of left and right arms 512 at a position where the arm 512 contacts when the idle roller 511 is pushed down.

The limit switch is installed so as to be turned on when the arm 512 comes into contact with it, and when the limit switch is turned on, the stop lamp 52 is lit. A user who is driving the vehicle can see that the wheels are correctly placed on the drive roller 3 and the driven roller 4 by seeing the lighting of the stop lamp 52 .
When a mobile terminal device such as a smartphone is used as the controller 311, even if the fact that the limit switch is turned on is displayed on the screen of the mobile terminal device such as a smartphone or communicated by sound or voice, good.
Alternatively, a limit switch may be connected to the circuit of the driving device 31 so that the driving device 31 does not operate unless the limit switch is turned on. By doing so, it is possible to prevent the drive roller 3 from rotating when the wheel is not properly placed on the propeller shaft nipple position adjusting device 1, thereby further improving safety.
In addition, the limit switch itself, which detects that the idle roller 511 is pushed down, is used as the power switch for the propeller shaft nipple position adjustment device 1, and by detecting that the wheel is properly placed on the propeller shaft nipple position adjustment device 1, , the propeller shaft nipple position adjusting device 1 may be turned on.

The stop ramp 52 is arranged on the same side as the derailment prevention bar 24 of the propeller shaft nipple position adjusting device 1 . Therefore, when the derailment prevention bar 24 is installed at a location corresponding to the right outer side of the vehicle when the vehicle is placed on the propeller shaft nipple position adjustment device 1, the derailment prevention bar 24 If it is installed at a location corresponding to the left outside of the vehicle, it is located at a location corresponding to the left outside of the vehicle, and if the derailment prevention bar 24 is installed on both sides, it is arranged on both sides.
In Embodiment 1, the stop ramp 52 is arranged at a high position using the support frame 53 . The support frame 53 may be of a foldable type so that when not in use, the support frame 53 is laid down to the storage position, and when in use, the support frame 53 is erected to the use position. Moreover, the stop lamp 52 is not limited to being installed at a high position, and can be installed at a low position.

[Slip prevention stopper]
After the greasing work, the wheel is withdrawn from the driving roller 3 and driven roller 4 of the propeller shaft nipple position adjusting device 1 . When leaving the vehicle, the vehicle is driven to drive the rear wheels. At this time, the wheels on the driving roller 3 and the driven roller 4 among the rear wheels are idling and are in contact with the floor due to the action of the differential. Since the power is not transmitted to the other wheel and it does not rotate, the vehicle cannot be moved out of the propeller shaft nipple position adjusting device 1 .
Therefore, the idling prevention stopper 42 is provided so that the driven roller 4 arranged on the inclined portion 22 side does not rotate. The idling prevention stopper 42 is composed of an arm-shaped member provided in the vicinity of the driven roller 4 so as to be able to swing. As shown in FIG. 2, when the driving roller 3 is rotated by the driving device 31, the driven roller 4 rotates in the direction of the arrow, and the idling prevention stopper 42 is bounced by the projection 41 provided on the peripheral surface of the driven roller 4. It is not lifted and engaged. However, as shown in FIG. 3, when the vehicle is withdrawn from the propeller shaft nipple position adjusting device 1, the wheels rotate in the direction of the arrow (the direction opposite to the arrow in FIG. , but the idling prevention stopper 42 engages with the projection 41 of the driven roller 4 to prevent rotation.
The wheels are driven to rotate on the non-rotatable driven rollers 4 so that the vehicle can exit the propeller shaft nipple position adjusting device 1 .
A fixing means may be provided to fix the idling prevention stopper 42 at a position separated from the driven roller 4 . In particular, when the drive roller 3 is constructed so as to be rotatable in both forward and reverse directions, this fixing means is necessary.

Further, the means for fixing the driven roller 4 so as not to rotate is not limited to the combination of the projection 41 provided on the peripheral surface of the driven roller 4 and the idling prevention stopper 42, and other members constituting the driven roller 4 may be used. It may be a locking member that locks, a brake means that stops the driven roller 4 by friction, or a means that prevents the rotation of the support shaft that supports the driven roller 4 for rotation.
When the driving roller 3 and the driven roller 4 are reversed so that the driving roller 3 is arranged on the inclined portion 22 side and the driven roller 4 is arranged on the wheel stopper 23 side, the driving roller 3 on the inclined portion 22 side rotates. A means is provided to enable fixation so as not to occur. Furthermore, regardless of the arrangement of the drive roller 3 and the driven roller 4, both the drive roller 3 and the driven roller 4 may be provided with means for fixing them so as not to rotate.
Large vehicles such as trucks, especially vehicles with two rear wheels, are often equipped with a differential lock device. Even if one wheel idles, the other wheel grounded on the floor surface is also driven, so the wheel can be withdrawn from the propeller shaft nipple position adjusting device 1 without using the idle rotation prevention stopper 42.例文帳に追加

[Wheel stopper storage part]
The propeller shaft nipple position adjusting device 1 is provided with a wheel stopper housing 6 (see FIGS. 1 and 5). The wheel stopper storage portion 6 stores a wheel stopper 61 to be installed on a wheel of the vehicle, for example, a front wheel during grease-up work.
A limit switch (not shown) for detecting that the wheel stopper 61 has been taken out is provided in the wheel stopper storage portion 6 . The power supply of the driving device 31 is not turned on unless the limit switch detects that the wheel stopper has been pulled out.
With this configuration, it is possible to prevent the operator from forgetting to take out the wheel stopper 61 and performing the grease-up operation without using the wheel stopper, thereby enhancing the safety of the grease-up operation.
In addition, the limit switch itself for detecting the removal of the wheel stopper 61 is used as the power switch of the propeller shaft nipple position adjusting device 1, and the power of the propeller shaft nipple position adjusting device 1 is turned on by removing the wheel stopper 61. can be made to be

[how to use]
FIG. 4 is a side view of a state in which the propeller shaft nipple position adjusting device 1 of Embodiment 1 according to the present invention is used in a dump truck 7, and FIG. 5 is a top view of the same.
The dump truck 7 is equipped with a uniaxial front wheel 8 (one left and one right wheel) and two rear wheels 9 (both the rear front wheel 91 and the rear rear wheel 92 are double tires with two left and right wheels).
Power from an engine (not shown) is transmitted to an inter-axle differential 73 via a clutch/transmission 71 and a propeller shaft 72 . In the inter-axle differential 73, the power is divided toward two of the rear front wheels 91 and the rear rear wheels 92, one is to the rear front wheel differential 911 via gears or the like, and the other is to the rear rear wheels via the inter-axle propeller shaft 74. Power is transmitted to the differential 921 .
In the rear front wheel differential 911, power is transmitted to the left and right rear front wheels 91 via the rear front wheel drive shaft 912, and in the rear rear wheel differential 921, power is transmitted to the left and right rear wheels 92 via the rear rear wheel drive shaft 922. Power is transmitted.

A procedure for greasing the dump truck 7 having the vehicle body as described above will be described below.
1. The propeller shaft nipple position adjusting device 1 is placed on the floor just behind the right wheel of the rear wheel 92 of the dump truck 7 . The wheel stopper 61 is taken out from the wheel stopper housing portion 6 of the propeller shaft nipple position adjusting device 1, and the power of the propeller shaft nipple position adjusting device 1 is turned on. If a working groove is provided on the floor, the propeller shaft nipple position adjusting device 1 is arranged at a position where the dump truck 7 can stop on the working groove.
2. A person sits in the driver's seat of the dump truck 7, slowly moves the dump truck 7 backward, and places the right wheel of the rear rear wheel 92 on the propeller shaft nipple position adjusting device 1. - 特許庁Since the stop lamp 52 is lit when the wheels are properly placed on the driving roller 3 and the driven roller 4, the dump truck 7 is stopped when the lighting of the stop lamp 52 can be visually recognized. At this time, the wheels other than the right wheel of the rear wheels 92 placed on the propeller shaft nipple position adjusting device 1 are in contact with the floor surface.
3. The transmission of the clutch/transmission 71 is set to neutral, the parking brake is applied, and the engine is stopped.
4. After getting off the driver's seat of the dump truck 7, the front wheels 8 are chocked 61. - 特許庁Note that the rear front wheel 91 may be provided with a wheel chock 61 .
5. The driver gets into the driver's seat of the dump truck 7 and releases the parking brake.
6. A person gets off from the driver's seat of the dump truck 7 and crawls under the propeller shaft 72 of the dump truck 7 with the controller 311 and the grease pump (not shown).
7. The controller 311 is operated to rotate the propeller shaft 72 to align the grease inlet (nipple). The controller 311 is operated to stop the propeller shaft 72 when the grease inlet reaches a position where it is easy to work.
8. Attach the tip of the grease pump to the grease inlet and add grease.
9. Perform steps 7 and 8 for the other grease inlet of propeller shaft 72 .
10. Perform steps 6-8 for the inter-axle propeller shaft 74, if necessary.
11. After finishing the greasing of all the grease inlets to be greased, the driver gets into the driver's seat of the dump truck 7 and applies the parking brake.
12. Get off the driver's seat of the dump truck 7 and remove the wheel chock 61 .
13. Sit in the driver's seat of the dump truck 7, slowly move the dump truck 7 forward, move the right wheel of the rear rear wheel 92 out of the propeller shaft nipple position adjusting device 1, and apply the parking brake when the exit is visible. to stop the engine.
14. After getting off the driver's seat of the dump truck 7, the wheel stopper 61 is stored in the wheel stopper storage part 6, and the power of the propeller shaft nipple position adjusting device 1 is turned off. Note that the step 12 may be used to store the wheel stopper 61 and turn off the power.
Although the above-described method is a method for performing the grease-up work by one worker, it goes without saying that the work can be performed by sharing the work among a plurality of workers.

[Embodiment 2]
FIG. 6 is a side view of the propeller shaft nipple position adjusting device 1 of Embodiment 2 according to the present invention when it is used.
In the first embodiment, the portable propeller shaft nipple position adjusting device 1 is placed on the floor and used. can also be used. When the propeller shaft nipple position adjusting device 1 is placed on the bottom surface of the hole and used, the inclined portion 22 is not required. Therefore, it is preferable to detachably attach the inclined portion 22 to the main body portion 21 so that the portable propeller shaft nipple position adjusting device 1 can be placed on the bottom surface of the hole and used.
Alternatively, the propeller shaft nipple position adjusting device may be fixed in the hole.
The depth of the hole can be appropriately designed, but it is preferable that the depth is such that the upper surfaces of the drive roller 3 and the driven roller 4 are aligned with the floor surface.
The usage method is the same as the usage method of the propeller shaft nipple position adjusting device 1 of the first embodiment.

The propeller shaft nipple position adjusting device 1 of the embodiment according to the present invention has been described above in detail with reference to the drawings, but the specific configuration is not limited to these embodiments. Even if there is a change in design without departing from the gist of the invention, it is included in the present invention.
In addition, each of the above-described embodiments can be combined by diverting each other's techniques unless there is a particular contradiction or problem in the purpose, configuration, or the like.

1 Propeller Shaft Nipple Position Adjusting Device 2 Frame 21 Body Part 22 Inclined Part 23 Wheel Stopper 24 Derailment Prevention Bar 3 Drive Roller 31 Drive Device 311 Controller 4 Driven Roller 41 Projection 42 Slip Prevention Stopper 5 Stop Auxiliary Device 51 Wheel Placement Detector 511 Idle roller 512 Arm 52 Stop ramp 53 Support frame 6 Wheel stopper housing 61 Wheel stopper 7 Dump truck 71 Clutch/transmission 72 Propeller shaft 73 Inter-axle differential 74 Inter-axle propeller shaft 8 Front wheel 9 Rear wheel 91 Rear front wheel 911 Rear front wheel Differential 912 Rear front wheel drive shaft 92 Rear rear wheel 921 Rear rear wheel differential 922 Rear rear wheel drive shaft

Claims (6)

1. A propeller shaft nipple position adjusting device, comprising: a wheel rotating device having a pair of front and rear rotating rollers for rotating one of right and left wheels of a vehicle. 2. A propeller shaft nipple position adjusting device according to claim 1, wherein at least one of said pair of front and rear rotating rollers is driven by a motor. 2. A propeller shaft nipple position adjusting device according to claim 1, wherein at least one of said pair of front and rear rotating rollers is provided with means for fixing it so as not to rotate. 2. A propeller shaft nipple position adjusting device according to claim 1, wherein said wheels are double tires, and said pair of front and rear rotating rollers has a width capable of mounting said double tires. The propeller shaft nipple position adjusting device according to any one of claims 1 to 4, wherein the propeller shaft nipple position adjusting device is portable. Propeller shaft nipple position adjustment using a propeller shaft nipple position adjusting device provided with one wheel rotating device having a pair of front and rear rotating rollers for rotating the wheel on which only one of the left and right wheels of the vehicle is placed a method,
A propeller shaft nipple position adjusting method comprising the step of rotating at least one of the pair of front and rear rotating rollers to rotate the wheel, thereby rotating the propeller shaft.

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