JPH07223575A - Assembly of motorcycle - Google Patents

Abstract

PURPOSE:To lighten a worker's burden when assemblying a motorcycle on a self-traveling assembly truck. CONSTITUTION:A self-traveling assembly truck C2 which self-travels loaded with motorcycle V is equipped with a front part rising/lowering table 42 which rises and lowers, supporting the front wheels Wf of the motorcycles and a rear part rising/lowering table 43 which rises and lowers, supporting rear wheels Wr, and on the rear part rising/lowering table 43, a clamp mechanism 50 for clamping the rear wheel Wr is installed. By selecting a descent state where both the rising/lowering tables 42 and 43 and lowered, rising state where both the rising lowering tables 42 and 43 are raised, and a forwardly rising state where only the front part rising/lowering table 42 is raised, and a forwardly lowered state where only the rear part rising/lowering table 43 is raised, and an operator can install parts in a less burdened attitude.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a motorcycle for assembling parts while transporting a motorcycle by means of a self-propelled bogie having a front lifting table for supporting front wheels and a rear lifting table for supporting rear wheels. Regarding the assembling method.

[0002]

2. Description of the Related Art In the assembly of a conventional motorcycle, automatic machines and workers are arranged along an assembly line consisting of an overhead conveyor and a slat conveyor, and various parts are sequentially assembled to a chassis flowing through this assembly line. The method of going is adopted.

[0003]

By the way, in the case of multi-model small-quantity production, it is necessary to change the layout and length of the conveyor in accordance with the change of the model or the number of production. In this case, the conventional method of assembling a motorcycle using a conveyor requires a lot of time and cost to change the assembly line, which causes a problem of a decrease in factory operation rate and an increase in product cost. .

Therefore, it is conceivable to assemble a motorcycle using a self-propelled carriage whose travel route can be arbitrarily set. In such a case, the motorcycle is fixed on the self-propelled carriage. If this happens, the worker may be forced to take an unnatural work posture depending on the type of parts to be assembled, which may reduce work efficiency.

The present invention has been made in view of the above circumstances, and when the motorcycle is assembled using the self-propelled carriage, it is possible to reduce the burden on the worker and enable efficient work. To aim.

[0006]

In order to achieve the above object, the present invention provides a motorcycle by a self-propelled bogie having a front lifting table supporting front wheels and a rear lifting table supporting rear wheels. A method of assembling a motorcycle in which components are assembled while being transported, in which a front elevation table and a rear elevation table are controlled to elevate and lower, and the posture of the motorcycle is changed to a descending state, an ascending state, a ascending state, and a descending state. The feature is that the parts are assembled while doing so.

[0007]

Embodiments of the present invention will be described below with reference to the drawings.

1 to 19 show an embodiment of the present invention. FIG. 1 is a perspective view of a first self-propelled carriage, FIG. 2 is a two-direction arrow view of FIG. 1, and FIG. 2 is a 3-direction arrow view, FIG.
FIG. 5 is a perspective view of the self-propelled carriage, FIG. 5 is an enlarged view of an arrow in FIG. 4, FIG. 6 is an enlarged view of an essential part of FIG. 5, FIG. FIG. 8 is a sectional view taken along line 8-8, FIG. 9 is a view showing a layout of an assembly line, and FIGS. 10 to 19 are operation explanatory views of each station.

First, the structure of the first self-propelled carriage C ₁ will be described with reference to FIGS. 1 to 3.

The first self-propelled trolley C ₁ includes a trolley body 2 supported on the floor by casters 1 provided at four corners. The left and right side edges of the carriage main body 2 are shaped so as to be constricted inward so that an operator can work as close as possible to the mounted object. A lifting table 4 is supported on the upper surface of the trolley body 2 via columns 3, and the height of the lifting table 4 can be adjusted by stepping on a foot lever 5. Further, an operation box 6 and batteries 7, 7 are provided on the upper surface of the truck main body 2, and ultrasonic sensors 8, 8 for detecting obstacles are provided on the front surface of the truck main body 2.

On the lower surface of the carriage main body 2, the battery 7,
A drive unit U is provided which is supplied with electric power from 7 to drive the first self-propelled assembly carriage C ₁ . The drive unit U includes a base frame 11 fixed to the lower surface of the carriage main body 2.
One end of an elevating frame 13 is pivotally supported inside the device 1 via a pin 12 so as to be vertically swingable. Rod 14 standing on the elevating frame 13
Extends inside the carriage main body 2, and the elevating frame 13 is biased upward by a spring 15 that is contracted between the tip of the rod 14 and the carriage main body 2. An eccentric cam 17 is provided on an output shaft of a lifting motor 16 provided on the base frame 11, and the eccentric cam 17 contacts an upper surface of a cam follower 18 provided on the lifting frame 13. Therefore, the elevating frame 13 which is normally in the ascending position shown by the solid line in FIG. 2 by the elastic force of the spring 15 causes the eccentric cam 1 driven by the elevating motor 16.
The cam follower 18 is pushed down by 7 and swings to the lowered position shown by the chain line.

A revolving frame 19 is pivotally supported on the lower surface of the elevating frame 13 via a revolving shaft 20 extending in the vertical direction so that the revolving frame 19 can pivot left and right. The swivel shaft 20 is connected to the elevating frame 13 by a pair of springs 21 and 21, whereby the swivel frame 19 is biased toward the neutral position shown in the figure along the vehicle longitudinal direction. A swing frame 23 is pivotally supported inside the swivel frame 19 via a pair of front and rear pins 22, 22 so as to be swingable left and right. Swing frame 2
A left drive wheel 25 and a right drive wheel 26 are rotatably supported on an axle 24 supported in the left-right direction on the left drive wheel 25.
Is connected to a traveling motor 27 via a chain 28, and the right drive wheel 26 is connected to a traveling motor 29 via a chain 30. When the floor surface is partially inclined, the swing frame 2
By swinging 3 to the left and right, both drive wheels 25 and 26 can be brought into uniform contact with the floor surface.

At the front end of the swivel frame 19, a tape detection sensor 32 for detecting the running guide tape 31 (see FIG. 1) attached to the floor surface is provided. The tape detection sensor 32 detects whether the running guide tape 31 is at the center position or is biased to the left and right, and the rotation speeds of the pair of running motors 27 and 29 are controlled based on the output thereof.

When the elevating frame 13 is raised to separate the left and right drive wheels 25 and 26 from the floor surface, the worker pushes and pulls the caster 1 to move the first self-propelled carriage. C ₁ can be moved freely. Further, the elevating frame 13 is lowered by the elevating motor 16 so that the left and right drive wheels 2 are driven.
If 5 and 26 are grounded to the floor, the pair of traveling motors 2
By driving 7 and 29 to rotate the drive wheels 25 and 26, the first self-propelled carriage C ₁ can be self-propelled.

That is, when the tape detection sensor 32 detects the running guide tape 31 at the central position, the pair of running motors 27 and 29 are driven in synchronization, and the first self-propelled assembly carriage C ₁ goes straight. To run. Further, when the tape detection sensor 32 detects the lateral deviation of the running guide tape 31, the rotational speeds of the pair of running motors 27 and 29 are given a difference, and the first self-propelled assembly carriage C ₁ turns. As a result, the first self-propelled carriage C ₁ automatically travels along the travel guide tape 31.

Next, the structure of the second self-propelled carriage C ₂ will be described with reference to FIGS. 4 to 8. The first self-propelled trolley C ₁
By assigning the same reference numerals to the same constituent elements as those in FIG.

The second self-propelled trolley C ₂ has a trolley body 2 which is larger than the first self-propelled trolley C ₁ and can be pushed by four casters 1 ... 1 Drive unit U having the same structure as the self-propelled carriage C ₁
By this, self-propelling along the running guide tape 31 is possible.
The operation box 6 is provided on the front right side surface and the lower surface of the trolley body 2.
And batteries 7, 7.

On the upper surface of the carriage main body 2, there are provided a front elevation table 42 for supporting the front wheels Wf of the motorcycle and a rear elevation table 43 for supporting the rear wheels Wr.

As is clear from FIG. 6, the lower part of the front lift table 42 and the carriage main body 2 are pivotally supported at the lower end and the upper end is slidable in the long hole 42 ₁ of the front lift table 42. And a first link 44 that engages with the upper end of the front lifting table 42 and a lower end of the long hole 2 of the carriage body 2.
The second link 45 slidably engaged with ₃ is connected via an X link mechanism 47 pivotally supported by a pin 46 at an intermediate portion thereof. The lower end of the second link 45 has the carriage main body 2
When the electric cylinder 48 is contracted and driven, the front lift table 42 descends to the position indicated by the solid line, and its upper surface is flush with the upper surface of the carriage body 2. Further, when the electric cylinder 48 is driven to extend, the front lifting table 42 moves up to the position indicated by the chain line. The front lifting table 42 and the trolley body 2 are connected by a boot 49 that is elastic.

The rear lift table 43 has the same construction as the front lift table 42 described above, and additionally has a clamp mechanism 5 for holding and fixing the rear wheel Wr of the motorcycle V on the upper surface thereof.
Equipped with 0. As is clear from FIGS. 7 and 8, the clamp mechanism 50 includes a fixed clamp plate 51 and a bracket 52.
And a pair of slide guides 5 provided on the bracket 52
A movable clamp plate 55 in which the slide rods 54 are slidably guided by 3, 53 and an electric cylinder 56 provided in the bracket 52 and connected to the movable clamp plate 55.
With. Therefore, the electric clamp 56 drives the movable clamp plate 55 toward the fixed clamp plate 51, and the rear wheel Wr of the motorcycle V can be clamped and fixed between the clamp plates 55 and 51.

As shown in FIG. 9, the assembly line of the motorcycle V includes a sub-assembly line L ₁ of the first mobile assembly carriage C ₁ assembled main portion of the motorcycle V, the second mobile assembly carriage A main assembly line L ₂ for assembling various parts to the motorcycle V by C ₂ , a small set zone Z ₁ for assembling the front fork unit FF and the rear fork unit RF, and a logistics for supplying various parts to the main assembly line L _2. It is composed of a zone Z ₂ and a completion inspection section I connected to the main assembly line L ₂ .

Sub assembly line L ₁ and main assembly line L
A crane C for transferring the motorcycle V between ₂ and
R is provided. The small set zone Z ₁ is the first conveyor CV ₁
And a second conveyor CV ₂ , and the first conveyor C
In V ₁ , the front fork unit FF is assembled,
In the second conveyor CV ₂ , the rear fork unit RF
Is assembled. Completed front fork unit F
F and rear fork unit RF are transfer robots RO
Is mounted on the second self-propelled trolley C ₂ . Logistics zone Z _2, which are formed along the main assembly line L ₂ is,
A trolley in which various components to be assembled to one motorcycle V are collectively mounted and circulates so as to run in parallel with the second self-propelled trolley C ₂ .

Next, the operation of the embodiment of the present invention having the above construction will be described.

First, the sub-assembly will be described with reference to FIGS. 9 and 10.
Line L₁Each step in will be described. Sub assembly line
L₁Engine not shown in the first station S1 of
Engine unit E carried in from the unit assembly line
Is the first self-propelled carriage C₁Reprinted on top, followed by the second step
The engine unit E in the option S2.
Frame unit loaded from the unit assembly line
F is assembled. 1st self-propelled trolley C₁Is the third step
When the solution S3 is reached, the main assembly line L ₂Second
Self-propelled cart C₂Rear fork unit supplied by
RF is assembled, and further at the 4th station S4.
Main assembly line L₂2nd self-propelled trolley C₂By
The front fork unit FF supplied by
Then, the main part of the motorcycle V is completed as shown in FIG.
To do.

This motorcycle V has a fifth station S.
Sub-assembly line L ₁ by the crane CR installed in
Is transferred from the first self-propelled assembly carriage C ₁ to the second self-propelled assembly carriage C ₂ on the main assembly line L ₂ . When the motorcycle V is transferred, the front elevation table 42 and the rear elevation table 43 of the second self-propelled carriage C ₂ are both lowered, and thus the motorcycle V is in the second state in the state shown in FIG. It is supported on a self-propelled carriage C ₂ . As will be described later, the second self-propelled carriage C ₂ equipped with the motorcycle V has a front fork unit FF at the fourth station S4.
A second self-propelled carriage C _{2 that} is emptied by unloading the vehicle is used.

Next, each step in the main assembly line L ₂ will be described with reference to FIGS. 9 and 12 to 17. Second
When self assembly carriage C ₂ reaches the sixth station S6 in the main assembly line L _2, the front lift table 42 and the rear lift table 43 both raised to the state of FIG. 12,
Assembling of radiator etc. is performed. Then, in the seventh station S7 in the main assembly line L _2, it lowers the rear lift table 43 while raising the front lift table 42 and a front rising state of FIG. 13, the assembly of the muffler or the like is performed. Subsequently, in the eighth station S8 in the main assembly line L _2, the front lift table 42 and the rear lift table 43 together is lowered to the state of FIG. 14, the assembly of such handles and the meter is performed.

Subsequently, at the ninth station S9 of the main assembly line L ₂ , the front elevation table 42 and the rear elevation table 43 are both raised to the state shown in FIG. 15, and the upper fairing and the like are assembled. Subsequently, in the tenth station S10 in the main assembly line L _2, lowers the front lift table 42 while raising the rear lift table 43 as a Maekudari state of FIG. 16, the assembly of such lower fairing and the fuel tank Is done. Then, in the eleventh station S11 in the main assembly line L _2, the front lift table 42 and the rear lift table 43 together is lowered to the state shown in FIG. 17, the attachment and intermediate inspection such as windscreen is performed.

[0028] As described above, carriage C with the second mobile group at each station S6~S11 main assembly line L _2
2 When assembling various parts to the upper motorcycle V, the posture of the motorcycle V is switched to any one of the descending state, the ascending state, the ascending state, and the descending state so that the work can be performed most easily. Workers can work efficiently in a comfortable posture.

As shown in FIG. 17, the twelfth station S12 to pass the finished motorcycle V on completion inspection unit I from the second mobile assembly carriage C _2, the second mobile assembly carriage C ₂
Is provided with a platform 61 having the same height as, and a ramp 62 that is connected to the platform 61 and descends to the floor surface. The motorcycle V that has been unclamped by the clamp mechanism 50 is pushed by a worker. Then, it is sent from the second self-propelled carriage C ₂ to the completion inspection section I via the platform 61 and the lamp 62.

The empty second self-propelled carriage C ₂ after the motorcycle V has been dispensed moves backward to the 13th station S13 in the small set zone Z ₁ by switchback. The front fork unit FF sub-assembled by the first conveyor CV ₁ and the rear fork unit RF sub-assembled by the second conveyor CV ₂ in the sub-assembly zone Z ₁ are stopped at the 13th station S13 by the transfer robot RO.
Transferred to the self-propelled carriage C ₂ alternately.

The front fork unit FF is a front wheel Wf.
Is mounted on the second self-propelled carriage C ₂ while being clamped by the clamp mechanism 50, and the rear fork unit RF
Is mounted on the second self-propelled carriage C ₂ with the rear wheel Wr clamped by the clamp mechanism 50.

Second mounting the rear fork unit RF
The self-propelled trolley C ₂ moves to the third station S 3 of the sub-assembly line L ₁ , where the rear fork unit RF is transferred to the first self-propelled trolley C ₁ of the sub-assembly line L ₁ . The second self-propelled trolley C ₂ that has been emptied by unloading the rear fork unit RF moves forward by switchback, and the fifth station S5 to the twelfth station S12.
After that, it circulates to the 13th station S13, where the rear fork unit RF is mounted again.

On the other hand, the second self-propelled carriage C ₂ equipped with the front fork unit FF moves to the fourth station S4 of the sub-assembly line L ₁ , where the front fork unit FF moves to the _first sub-assembly line L ₁ . Transferred to the self-propelled carriage C ₁ . The second self-propelled trolley C ₂ that has been emptied by unloading the front fork unit FF moves forward by switchback and moves to the fifth station S5,
Then, the motorcycle V is received from the first self-propelled carriage C _{1 on the} sub-assembly line L ₁ . And the sixth station S
The motorcycle V on which various parts are assembled as described above at the 6th to 11th stations S11 is discharged to the completion inspection section I at the 12th station S12, and becomes the empty second self-propelled assembly carriage C ₂ . Is the 13th station S13
Then, the front fork unit FF is mounted again.

As described above, the motorcycle V is mounted on the second self-propelled trolley C ₂ traveling on the main assembly line L ₂ to assemble the parts, and the completed motorcycle V is discharged and recovered. Front fork unit FF or rear fork unit RF is attached to the second self-propelled trolley C ₂
Since it is equipped with and is supplied to the sub-assembly line L ₁ , the distance that the second self-propelled assembly carriage C ₂ travels in the air is reduced as much as possible to make the second self-propelled assembly carriage C ₂ effective. aim to use, yet the second mobile assembly carriage C ₂ of the sky it is possible to reduce the wasted space to be occupied.

Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above-mentioned embodiments, and various design changes can be made.

For example, in the embodiment, the first self-propelled carriage C ₁
And second is the self-assembly carriage C ₂ is provided with a separate structure may be common structure of the both self assembling carriage C _1, C _2. In the embodiment, the empty second self-propelled trolley C having the front fork unit FF supplied to the sub-assembly line L ₁ is also used.
_{Although the} motorcycle V is mounted on ₂ and the parts are assembled on the main assembly line L ₂ , it is automatically mounted on the empty second self-propelled carriage C ₂ which supplies the rear fork unit RF to the sub-assembly line L _1. The motorcycle V may be mounted to assemble the parts. The front fork unit F to the second mobile assembly carriage C ₂ one In a 13 station S13
If F and rear fork unit RF are installed at the same time,
The surplus second self-propelled trolley C ₂ is no longer run in the air, and all the second self-propelled trolleys C ₂ can be equipped with the motorcycles V to assemble parts.

[0037]

As described above, according to the present invention, the front elevating table and the rear elevating table provided on the self-propelled carriage are controlled to move up and down, and the motorcycle is lowered, raised, moved forward and forward. Since the parts are assembled while the posture is changed to the forward descending state, the worker is not forced to have an unreasonable work posture, and the work load can be reduced and the work efficiency can be improved.

[Brief description of drawings]

FIG. 1 is a perspective view of a first self-propelled bogie.

FIG. 2 is a one-direction arrow view of FIG.

FIG. 3 is a three-direction arrow view of FIG.

FIG. 4 is a perspective view of a second self-propelled carriage.

5 is a view in the direction of arrow 5 in FIG.

FIG. 6 is an enlarged view of a main part of FIG.

FIG. 7 is a view in the direction of arrow 7 in FIG.

8 is a sectional view taken along line 8-8 of FIG.

FIG. 9 is a diagram showing a layout of an assembly line.

FIG. 10 is an explanatory view of the operation at the fourth and fifth stations.

FIG. 11 is an operation explanatory view of the fifth station.

FIG. 12 is an explanatory view of the operation at the sixth station.

FIG. 13 is an explanatory view of the action at the 7th station.

FIG. 14 is an explanatory view of the operation at the 8th station.

FIG. 15 is an explanatory view of the operation at the 9th station.

FIG. 16 is an explanatory view of the operation at the 10th station.

FIG. 17 is an operation explanatory view of the 11th and 12th stations.

FIG. 18 is an operation explanatory view of the 13th station.

FIG. 19 is an operation explanatory view of the 13th station.

[Explanation of symbols]

C ₂ 2nd self-propelled bogie (Vehicle with self-propelled) V motorcycle Wf front wheel Wr rear wheel 42 front lift table 43 rear lift table

Claims (1)

[Claims] 1. A motorcycle (C ₂ ) equipped with a self-propelled carriage (C ₂ ) equipped with a front lifting table (42) supporting front wheels (Wf) and a rear lifting table (43) supporting rear wheels (Wr). A method for assembling a motorcycle, in which parts are assembled while transporting V), which comprises a front lifting table (42) and a rear lifting table (4).
3) A method for assembling a motorcycle, characterized in that the parts are assembled while the motorcycle (V) is controlled to move up and down to a descending state, an ascending state, a front rising state and a front descending state.