JPH0316817Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a vehicle transport device in an automobile assembly line.

(Prior art) As shown in Japanese Utility Model Publication No. 56-6338, the conveyance device is provided with a first conveyor and a second conveyor, and the second conveyor is inserted under the first conveyor and tilted. It is known to smoothly transfer an object with legs from a first conveyor to a second conveyor.

However, it is difficult to transport a tire-equipped vehicle as a legged object using the above-mentioned transport device. In other words, on a vehicle manufacturing line, for example, when installing parts inside the vehicle after the tire installation process, the height of the conveyor may be changed depending on the process to make the work easier. This is commonly done, and there are cases where the heights of the first conveyor and the second conveyor have to be different (for example, when the second conveyor is positioned lower than the first conveyor). The height relationship of the connection part between the conveyor and the second conveyor (the inclined part of the second conveyor) is specified because the conveyed objects are delivered there,
This is because the heights of the first conveyor and the second conveyor themselves cannot be freely set individually. Even if the desired height is obtained by inclining the conveyance surface of the second conveyor at the terminal end of the first conveyor, the inclination of the conveyance surface is not preferable for a tire-equipped vehicle as the object to be conveyed. On top of that, the second
It is unavoidable to extend the conveyor excessively in the conveying direction, which results in an expansion of the layout space and a decrease in the strength of the second conveyor.

Therefore, in order to solve the above-mentioned problems, a first conveyor is provided which supports a vehicle on a vehicle support base and conveys the vehicle's tires in a floating manner, and a first conveyor which is arranged in series with the first conveyor and which carries the vehicle's tires in a floating manner. a second conveyor that supports and conveys the vehicle with a substantially horizontal conveyance surface; and a second conveyor that is provided at a connecting portion between the first conveyor and the second conveyor to support the tires of the vehicle that is conveyed by the first conveyor. A vehicle conveyance device has been proposed that includes a tire-mounting moving platform that allows the vehicle to ride on the vehicle and lift the vehicle above the vehicle support platform of the first conveyor.

According to this vehicle conveyance device, since the tire running platform is separately provided, even if the heights of the first conveyor and the second conveyor themselves are set to be different, the accompanying tire running platform can be easily installed. By preparing this, it becomes possible to easily cope with the case where the heights of the first and second conveyors are different. Moreover, even if a tire running platform is provided separately, it is a substitute for the conventional delivery part for the transported object, and the length thereof is not expanded in the transport direction.

However, in the above-mentioned vehicle conveyance device, when the tire of the vehicle being conveyed by the first conveyor runs aground on the tire running platform, the tire of the vehicle is subsequently transferred to the tire of the tire running platform as it is transported. It rolls on the landing surface and moves to the second conveyor. For this reason, when the tires are at the steering angle, the vehicle moves forward in the steering angle direction and becomes misaligned, causing a problem that the vehicle is not properly transferred to the second conveyor.

(Purpose of the invention) This invention was made in view of the above circumstances.
The purpose is to connect the first conveyor, the second conveyor,
To enable a vehicle conveyance device including a tire riding platform interposed between both conveyors to properly transfer the vehicle to a second conveyor without shifting the position regardless of the steering angle of the tire. .

(Structure of the device) In order to achieve the above purpose, the device has the following features:
a first conveyor that supports a vehicle on a vehicle support platform and conveys the tires of the vehicle in a floating manner; a conveyor that is arranged in series with the first conveyor and supports the tires of the vehicle with a substantially horizontal conveyance surface; a second vehicle transporting the vehicle;
A conveyor is provided at a connecting portion between the first conveyor and the second conveyor, and the tire of the vehicle conveyed by the first conveyor runs over the vehicle to lift the vehicle from the vehicle support base of the first conveyor. a vehicle conveyance device comprising: a tire running platform; the second conveyor is a pair of left and right double conveyors to correspond to the left and right tires of the vehicle; and the second conveyor and driven by the drive means, and a belt wound around the plurality of drive rollers and forming a tire running surface of the tire running moving platform. , the belt is set so that the tire riding surface of the belt moves at the same speed as the conveyance speed of the first conveyor, and the positional shift of the vehicle is prevented regardless of the steering angle of the tire on the conveyance direction side of the vehicle. The structure is such that it can be transferred to the second conveyor while preventing this.

With the above-described configuration, the tire running surface of the belt is moved at the same speed as the conveyance speed of the first conveyor, so that the tires of the vehicle running on the tire running surface will not roll. Therefore, the vehicle can be appropriately transferred to the second conveyor regardless of the steering angle of the tires.

Moreover, since the tire running-on moving platform is equipped with a plurality of drive rollers and a belt that is wound around the plurality of drive rollers to form a tire running-on surface, the heights of the first and second conveyors can be made different. ,
While a corresponding shape of the tire running platform can be easily obtained by using a plurality of drive rollers and a belt, when a tire of a vehicle runs onto the tire running platform, the tire moves the belt against the driving roller. Since the frictional force is increased by pressing, the rotational force of the drive roller is accurately transmitted to the belt. Therefore, the speed of the tire riding surface of the belt on which the tire rides can be set to the same speed as the conveyance speed of the first conveyor with high accuracy, and the height of the first and second conveyors is made different so that the tire runs on the belt. Even if the shape of the boarding platform becomes complicated, it is possible to prevent the tires from rolling and properly transfer the vehicle to the second conveyor.

(Example) Hereinafter, an example of this invention will be described with reference to the drawings.

FIG. 1 shows a schematic side view of the vehicle conveyance device according to this invention, and FIG. 2 shows a plan view thereof. In these figures, 1 is a first conveyor, 2 is a second conveyor, and 3
indicates a tire-mounting moving platform as a tire-mounting moving platform.

The first conveyor 1 is a single-slat conveyor, and a drive shaft 1A is rotated in the conveyance direction (direction of arrow X) by a drive motor 4 as a drive means. Vehicle support stands 5 are provided at predetermined intervals in the feeding direction. The vehicle support stand 5
are the front tires 6A and rear tires 6 of the vehicle body 6.
B is for supporting the vehicle main body 6 in a state where it is floating above the surface of the first conveyor 1. It consists of one front support stand 5A and a pair of rear support stands 5B (however, only one is shown in the drawing) that supports both sides of the rear axle 6b of the vehicle main body 6.

The second conveyor 2 is a double-slat conveyor, and is installed in series slightly below the first conveyor 1 on the downstream side, and supports and conveys the four tires 6A and 6B at the front and rear of the vehicle body 6. . The second conveyor 2 consists of two rows of single conveyors 2A and 2B that are driven by the drive motor 4 in synchronization with the first conveyor 1, and the width interval between them is such that the vehicle main body 6 straddles them. By moving the front and rear tires 6A and 6B on the right side to the single conveyor 2A,
The front and rear tires (not shown) on the left side are set to be sized to be supported by the other conveyor unit 2B, respectively.

The riding platform 3 is provided at the connection between the first conveyor 1 and the second conveyor 2, and rides the tires 6A and 6B of the vehicle conveyed by the first conveyor 1 onto the vehicle support platform of the first conveyor 1. It is for lifting the vehicle from 5 and conveying the vehicle to the second conveyor 2 side, and has the same width interval as the width interval of the two rows of single conveyors 2A and 2B that constitute the second conveyor 2. , consists of two parallel rows of stand-up moving platforms 3A and 3B. The carry-in side is located on both sides of the carry-out side of the first conveyor 1 and is formed with an upward slope, and the carry-out side is positioned above the second conveyor 2 and formed with a downward slope.

As shown in FIGS. 3 and 4, each of the stand-up moving platforms 3A and 3B has a large number of small rollers 8 as drive rollers rotatably supported by a frame 7, and each roller of these small rollers 8. The frame body 7 has a sprocket 9 attached to the outer end of the shaft.
Belt winding rollers 10A are installed at both loading and unloading ends of the
10B is rotatably supported.

Then, the small roller 8 and the belt winding roller 10
A, 10B, guide rollers 11, 12, and a tension adjustment roller 13 are covered with a belt 14, forming a belt conveyor.

On the other hand, sprockets 15 are rotatably attached to the outer surface of the frame 7, corresponding to every two sprockets 9, for increasing the wrapping angle of the chain to the sprocket 9, which will be described later. Therefore, by wrapping the chain 16 over the sprocket 15 every two sprockets 9, the chain 16 can wrap around the sprocket 9 with a large wrapping angle.
chain 16 and sprocket 9
The slip phenomenon that occurs between the two is prevented.

Belt winding roller 10 attached to the unloading end side of each of the moving platforms 3A and 3B
A sprocket 17 is attached to the outer end of the roller shaft B, and this sprocket 17, a tension adjustment sprocket 18, and a shaft 19 provided below the drive shaft 1A and parallel to the drive shaft 1A as shown in FIG. The chain 16 is stretched across a pair of sprockets 20 attached to the sprocket. A sprocket 21 is attached to one end of the shaft 19, and a chain 23 is spanned between this sprocket 21 and a sprocket 22 attached to the drive shaft 1A.

Therefore, each single unit 3A of the landing moving platform 3,
The belt 14 of 3B rotates in synchronization with the first conveyor 1 at the same speed.

In the above configuration, the front tire 6A of the vehicle main body 6 (see A), which has been conveyed with the front and rear tires 6A and 6B floating, is placed on the vehicle support stand 5 of the first conveyor 1 in FIG. , when reaching the carry-in side of the moving platform 3, the moving platform alone 3A, 3
The vehicle body 6 is supported on the belt 14 of the vehicle body 6 and is conveyed while moving up an upward slope without rolling, and the front part of the vehicle body 6 rises from the front support base 5A of the vehicle support base 5. .

In this state, pass the above-mentioned uphill slope,
After reaching the approximately horizontal top surface, the vehicle moves forward and descends the downward slope, and the front tires 6A reach the second conveyor 2.
As a result, the rear tire 6B reaches the carry-in side of the moving platform 3 and climbs over the moving platform 3 by the same operation as the front tire 6A. 2 conveyor 2 (see B), and then transported by the second conveyor 2.

In this manner, in the moving platform 3 that lifts the vehicle 6 from the support base 5 of the first conveyor 1 by causing the tires 6A, 6B of the vehicle body 6 to ride on the vehicle, the tires 6A, 6B of the vehicle 6 ride on the surface. Since it is formed by the belt 14 that rotates at the same speed in synchronization with the first conveyor 1, the tires 6
A, 6B can transport the vehicle 6 without rolling, so even if the front tires 6A are steered, the vehicle 6 can be transported without shifting its position regardless of the steered angle.
can be appropriately transferred to the second Kowabear 2.

Furthermore, in this case, the tires 6A and 6B are connected to the belt 1.
4, the tires 6A and 6B press the belt 14 against the small roller 8 and increase the frictional force between the belt 14 and the small roller 8. Therefore, the rotational force of the small roller 8 is applied to the belt with high accuracy. 14. For this reason, the tires 6A,
This means that the speed of the belt 14 on which the tire 6B rides can be set to the same speed as the conveyance speed of the first conveyor 1 with high precision, and because the heights of the first and second conveyors 1 and 2 are different, the tire runs on the belt 14. Even if the shape of the moving platform becomes complicated, it is possible to prevent the tires 6A, 6B from rolling and properly transfer the vehicle to the second conveyor 2.

(Effects of the invention) As described above, the invention has the first conveyor,
In a vehicle transport device that includes a second conveyor and a tire mounting platform interposed between both conveyors, it is possible to properly transfer the vehicle to the second conveyor without shifting the position regardless of the steering angle of the tires. .

Furthermore, even if the heights of the first and second conveyors are different, the corresponding shape of the tire running platform can be easily obtained by using a plurality of drive rollers and belts; Even if the shape of the vehicle is complicated, the tires, belts, and multiple drive rollers prevent the tires from rolling and allow the vehicle to be properly transferred to the second conveyor.

[Brief explanation of drawings]

Fig. 1 is a schematic side view of the vehicle transfer device according to this invention, Fig. 2 is a plan view of the same, Fig. 3 is a plan view of a landing moving platform, Fig. 4 is a side view of the same, and Fig. 5 is a plan view of the same. FIG. 1...First conveyor, 2...Second conveyor, 3
...Moving platform, 4...Drive motor, 5...
Vehicle support stand, 6...vehicle body, 6A, 6B...tire, 8...small roller, 14...belt.

Claims (1)

[Claims for Utility Model Registration] A first conveyor that supports a vehicle on a vehicle support stand and conveys the vehicle's tires in a floating manner; a second conveyor for supporting the vehicle with a conveyance surface; and a second conveyor provided at a connecting portion between the first conveyor and the second conveyor to prevent the tires of the vehicle conveyed by the first conveyor from running over. A vehicle conveyance device comprising a tire mounting platform that lifts a vehicle from a vehicle support platform of the first conveyor, wherein the second conveyor is a pair of left and right double conveyors so as to correspond to left and right tires of the vehicle; The tire riding platform includes a driving means, a plurality of driving rollers disposed between the first conveyor and the second conveyor and driven by the driving means, and a tire wound around the plurality of driving rollers. a belt constituting a tire running surface of the running moving platform, the belt is set so that the tire running surface of the belt moves at the same speed as the conveyance speed of the first conveyor, and the belt is set so that the tire running surface of the belt moves at the same speed as the conveyance speed of the first conveyor, A vehicle conveyance device, characterized in that the vehicle can be transferred to the second conveyor by preventing displacement of the vehicle regardless of the steering angle of the tires on the direction side.