JPS5920765A - Car conveyor - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for conveying vehicles between mutually spaced conveyors, such as floor-conveyors.

In the vehicle assembly process, vehicles with suspension parts installed are usually transported on a floor conveyor, and post-process work such as wiring and piping connections is performed during transportation. There are quite a lot of different processes after the installation process, so due to work space constraints, generally multiple floor-conveyors are arranged in parallel, and the vehicle is turned 180 degrees at the end of each floor-conveyor to follow. floor
It is being transferred to a conveyor.

Conventionally, the transfer method was to lift the vehicle using a lifting jig placed at the end of the floor-conveyor on the previous line, and then lift the vehicle to the next line using an overhead conveyor installed between each floor-conveyor. The vehicle is transported to the starting end side of the floor conveyor of the line, and then the vehicle is transferred from the overhead conveyor 17 to the floor conveyor of the next line using a transfer device installed at the starting end side of the floor conveyor A7. A method is known in which one side of the vehicle is placed on a 51 M single slat conveyor between two floor conveyors λ7.

However, in the former method, while it is possible to effectively utilize the spatial space, at least the overhead conveyor, transfer equipment@2, etc., and the lifting jigs 3 to 4 are
Because the conveyor requires a stand, the overall configuration becomes considerably more compact, increasing the initial cost and running cost.Furthermore, since the overhead conveyor must be installed at a high position, there are disadvantages such as poor maintainability. Ta.

In addition, in the latter method, the main body of the conveyor A7 is installed below the floor level, so its maintenance is poor, and a considerably large foundation for the conveyor A7 is required, so the overall In addition to this, if the vehicle is configured to turn 180 degrees, the M4 structure of the conveyor body will become even more complex, and at the same time, there is a risk that the durability of the conveyor will be poor. In addition, in order to reliably change the course of the vehicle, fixed guide rollers are required to regulate the surface of the tarpaulin of the vehicle, which increases the cost.

This invention was made in view of the above-mentioned circumstances, and has a simple structure and therefore has good maintainability.
The purpose is to provide an inexpensive vehicle conveyance device, and its feature is that the vehicle is conveyed between the end of the first vehicle conveyor that conveys the vehicle W1 almost along the work surface and the start end of the second vehicle 1fa conveyor. A self-propelled trolley is arranged so as to travel back and forth, and the self-propelled trolley is provided with an elevating device for lifting the vehicle so that at least the front wheels of the vehicle in the conveying direction are lifted off the first vehicle conveyor; A bit is formed at the end of the 111-car conveyor and at the starting end of the 2nd vehicle conveyor to allow it to enter the underside of the self-propelled cart, and is tapered from the working floor surface. A self-propelled cart is placed between the front end of the bit on the vehicle conveyor side in the conveyance direction of the vehicle and the rear end of the bit on the second vehicle conveyor A7 side in the conveyance direction of the vehicle. The point is that a VR lowering means is provided for raising and lowering between the two.

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

FIG. 1 is a schematic layout diagram showing an eighth embodiment of the present invention. The first floor conveyor A'3 and the second floor conveyor λ/4 are arranged almost parallel to each other,
Bits 5.6 slightly lower than the floor surface 2J are formed on the terminal end A side of the first floor conveyor A73 and on the terminal end B side of the second floor conveyor A74. These bits 5.6 define the width that is greater than the width of the self-propelled bogie 7 and the lowest ground level that the self-propelled bogie 7 can reach on the vehicle 1 in order to allow the self-propelled bogie 7, which will be described later, to enter the underside of the vehicle 1. The first floor conveyor A has a depth that does not touch the parts.
The pitch 5 on the 73 side is formed to extend further forward from between the terminal ends of the respective slat conveyors 7 that constitute the 5JAI floor conveyor 3, and is
The side bits 6 are formed to extend from the rear of the 270th arc conveyor 4 to between the starting ends of the respective slat conveyors constituting the second floor conveyor A74. Further, at the curved end of the bit 5 on the conveyor 3 side of the first floor in the vehicle conveyance direction, that is, at the exit side end of the self-propelled trolley 7 during vehicle conveyance, a fixed lifter 8 is provided as a lifting means. The fixed lifter 8 is configured so that its table surface 8a is at the same height as the bottom surface of the bit 5 at the lowest end, and the table surface 8a is at the same height as the floor surface 2 at the highest end. has been done. On the other hand, at the rear end of the bit 6 on the 474 side in the vehicle transport direction, that is, at the entrance side end of the self-propelled trolley 7 during vehicle transport, a fixing device having the same structure as the fixed lifter 8 is attached. A lifter 9 is arranged. The position of the fixed lifter 9 is such that the vehicle 1 transported by the self-propelled cart 7 will not collide with the preceding vehicle 1.

By the way, as shown in FIGS. 2 and 3, the self-propelled trolley 7 is higher than the minimum ground clearance of the vehicle and is configured to run on its own on the floor surface 2, and is movable in both the front and rear directions. A shaft 10 is installed, and a drive wheel 11 is provided in the center.By rotating the drive wheel 11 by a built-in motor (not shown), the vehicle runs on the floor surface 2. It has become. The self-propelled truck 7 also has an elevating device, that is, a lifter 12, and the vehicle 1 is pushed up by the lifter 12 while the receivers 13 provided on the left and right sides of the upper surface are pressed against the lower arms 14 of the front 1 to the axle of the vehicle 1. This arrangement allows its front wheels 15 to be lifted above the floor conveyor 3.4 and the floor surface 2. Note that any type of lifter 12 can be used, such as a hydraulic type or a mechanical type using a screw jack or the like.

Here, to explain the power supply method for the self-propelled vehicle 117, a power supply system 5.6 to the floor 2 and each pin 1 is connected to the 1-loly duct 1 along the predetermined running route of the self-propelled vehicle 7.
~16 are buried under the table surfaces 8a, 9a of each fixed lifter 8.9, in front &! Another trolley duct 17 is installed corresponding to the trolley ducts 1 to 16, and when the fixed lifter 8.9 is at the highest end, the trolley duct 17 is connected to the trolley duct 1 on the floor side 2.
6, and when the fixed lifter 8.9 is at the lowest end, the trolley ducts 1 to 17 are connected to the trolley duct 16 on the pit 5.6 side. On the other hand, the self-propelled trolley 7 has a collector 18 at its lower part,
By bringing the current collector 18 into contact with each of the trolley ducts 16 and 17, power is supplied to the self-propelled trolley 7. Note that the self-propelled trolley 7 can also use a battery mounted on itself as a power source, and in that case, charging equipment may be provided as appropriate.

Next, a description will be given of the equipment 611 that controls the traveling of the self-propelled cart 7 and the lifting and lowering of the lifter 12 and fixed lifter 8.9. First, the equipment that assists the traveling of the self-propelled trolley 7 will be explained.It 1 line 19 runs from the terminal end A of the conveyor 3 on the first floor to the start end B of the conveyor 4 on the second floor.
are buried in each pit 1 to 5.6 and near the bottom of the table surfaces 8a and 9a of the fixed lifter 8.9 and near the floor surface 2 so as to be parallel to the trolley duct 16.17. On the other hand, a detector 20 for detecting heel magnetic waves emitted from the guide wire 19 is provided at the front end of the mobile platform It! By controlling the controller 11N (not shown), the self-propelled trolley 7 traces the electric wave, that is, moves along the guide wire 19. (In other words, the guide line 19 defines the running progress of the self-propelled truck.) In addition, a forward detector 21a is installed at the left end of the self-propelled truck 5, and a backward detector 21a is installed at the right end. Attachments i to 22a that operate the forward detectors 21a are connected to the first floor conveyor A.
An attachment 22tl that is installed at the far rear side in the vehicle transport direction in the A73 side bit 5 and operates the reverse detector 21b is attached to the vehicle transport in the second floor A74 side pit 6. The self-propelled trolley 7 travels based on the output signals of these detectors 21a and 21b and the signal based on the fact that the lifter 12 is at the upper end or the lower end. , or it is set to stop. That is, when the self-propelled cart 7 is in the pit 5 on the first floor conveyor 123 side and the forward movement detector 21a is on, if the lifter 12 is at the lower end, the self-propelled cart 7 will stop and the lifter 12 will rise. If it is at the end, it will move forward, and if the self-propelled cart 7 is in the bit 6 on the second floor-conveyor 4 side and the backward detector 211) is on, if the lifter 12 is at the rising end, the self-propelled cart will move forward. 7 stops and lifter 12
When the is at the lowering end, the self-propelled platform (7) moves backward. The fixed lifter 8 in the bit 5 on the side of the first floor conveyor 3 is provided with a structure that projects from the table surface 8a when it is at the lowest end and turns on the backward detector 21b, and when it is at the highest end. Attachments i to 23a that retreat from the table surface 8a and turn off the retreating detector 21b
On the other hand, when the table surface 8a is at the highest point,
An attachment 2311 is provided which protrudes from the table to turn on the forward movement detector 21a, and which retracts from the table surface 8a to turn off the forward movement detector 21a when the table surface 8a is at the lowest position. On the other hand, the second floor
The fixed lifter 9 in the l-side pits 1- and 6 has a fixed lifter 9 that protrudes from the table surface 9a when at the highest end to turn on the backward detector 21b, and from the table surface 911 when at the lowest end. Attachment h24a moves back to avoid turning off the backward detector 21b, and on the contrary, the knife at the lowest end protrudes from the table surface 9a to turn on the forward moving detector 21a, and Attachments 1 to 241) that enter from the table surface 9a and turn off the forward movement detector 21a are installed at the knife at the highest end.

Roughly speaking, the crosspieces that control the lowering of the lifter 12 are the one-lift lifter 25a attached to the top surface of the self-propelled vehicle 7, and the qi-puda bottom on the side of the self-propelled vehicle 7. For example, the rising detector 25a is mainly used for the fluorocarbon 1 of the vehicle 1.
~ By contacting the floor arm 14 of the axle and turning it on, the lifter 12 rises, and the lowering detector 2
5b turns on the attachments 26 attached to the second floor conveyor 4 at regular intervals, so that the lifter 12 descends. In addition, lifter 1
The rising end and the falling end of 2 are detected by a detector (not shown) built into the lifter 12 or the self-propelled cart 7.

Furthermore, each fixed lifter 8.9 is raised or lowered based on an output signal from a switch operated by the self-propelled cart 7. i.e. 1st floor - conveyor 3
The fixed lifter 8 in the side bit 5 has a lifting switch 27a which functions only when it is at the lowest end and raises the fixed lifter 8 by being operated by the self-propelled cart 7, and a rising switch 27a which functions only when it is at the lowest end. A lowering switch 27b is provided, which functions only when the lifter is in position, and lowers the fixed lifter 8 when operated by the self-propelled cart 7. On the other hand, the 270th
The fixed lifter 9 in the bit 6 on the side of the arc conveyor 4 has a lowering suit 28a that functions only when it is at the highest end and lowers the fixed lifter 9 when operated by the self-propelled cart 7. A lifting switch 28b is provided which functions only when the fixed lifter 9 is at the lowest end and is operated by the self-propelled cart 7 to raise the fixed lifter 9.

The fixed lifter 9 in the bit 6 on the second floor conveyor A74 side is designed to prevent the preceding vehicle 1 from colliding with the preceding vehicle 1 at the starting end of the 42nd floor conveyor A74. If it exists, a sequence is set so that it does not descend even if the self-propelled trolley 7 rides on it.

Next, the operation of the conveying device configured as described above will be explained.

When the self-propelled cart 7 is on the terminal end A side of the first floor conveyor 3 and the vehicle 1 has not yet been conveyed by the first floor conveyor A73, the rising detector 25
a is in the OFF state, the lifter 12 is at the lower end, and the forward movement detector 21a is in the corresponding attachment 1
22a, the self-propelled trolley 7 is stopped.

Further, the fixed lifter 8 has been lowered to the lowest end. In this state, when the vehicle 1 is conveyed to the terminal end A by the 170th arc conveyor 3, the lift detector 25a comes into contact with, for example, the lower arm 14 of the front axle and turns on, and as a result, the lifter 12 rises. lower arm 14
Push up the vehicle 1 through the. Here, lower arm 1
The reason we decided to push up 4 was because of the smallest increase] ~
This is because the front wheel 15 can be lifted off the first floor conveyor 3 by the rotation. When the front wheels 15 are lifted up, the rear wheels of the vehicle 1 are in contact with the first floor-conveyor 3, but by setting the transmission gear A7 of the vehicle 1 to neutral 1 - the rear wheels spin idle. Therefore, the vehicle 1 is not pushed by the first floor conveyor 3. When the lifter 12 reaches the rising end, since the forward movement detector 21a is already turned on, the self-propelled trolley 7 detects the electromagnetic waves emitted from the guide wire 19 with the vehicle 1 pushed up by the detector 20. while moving forward within bit 5. In this case, the forward movement detector 21a self-holds the on signal. Self-propelled platform 17 is fixed lifter 8
At the same time, when the backward detector 21b completely rides on the table surface 8a of the fixed lifter 8,
23a, the self-propelled cart 7 is turned on by the fixed lifter 8.
At the same time, the lift switch 27a is turned on when the self-propelled trolley 7
Since the fixed lifter 8 is turned on, the fixed lifter 8 rises, and the table surface 8a and the floor surface 2 are at the same height. Note that as the fixed lifter 8 rises, the trolley duct 17 and guide wire 19 installed on the fixed lifter 8 are
1 in ~5... Although it is temporarily separated from the trolley duct 16 and the guide wire 19, when the fixed lifter 8 reaches the highest point, the trolley duct 1-17 and the guide wire 19 are separated from the floor surface 2 side. 1- Roly duct 16 and induction v7A19
connected to.

When the fixed lifter 8 reaches the highest point, its attachments 1 to 23a retract from the table surface 8a and the backward detector 21b is turned off again. As a result, the self-propelled cart 7 moves along the guide line 19 to the Flow 7 - Traveling towards conveyor A74 1
-ru. In that case, the detector 20 h<
The electric current generated by the guide line 19 is detected, and the rotation speed of the left and right drive wheels 11 of the self-propelled bogie 7 is controlled based on the detection signal, so the self-propelled bogie 7 can move straight and follow the guide line 19. It travels while curving and conveys the vehicle 1 to the second floor-conveyor 4 side.

On the other hand, the fixed lifter 9 in the 270th arc conveyor 4 side pit 1-6 is at the highest end, and its table surface 9a is in line with the floor surface 2, so that the self-propelled cart 7 lowers the vehicle 1. Push up from the side and ride on the fixed lifter 9 while being towed. By riding on the fixed lifter 9, the self-propelled trolley 7
The reverse detector 21b is on the other hand
The stationary lifter 9 stops because it is turned on by the self-propelled cart 7, and at the same time, the fixed lifter 9 descends because the lowering switch 288 is turned on by the self-propelled cart 7. In that case, the leading vehicle 1 is the second
As described above, when the fixed lifter 9 is present at the starting end B of the 70 arc conveyor A74, the fixed lifter 9 remains stopped at the highest end.

When the fixed lifter 9 reaches the lowest end, the attachment 24
Since a moves back and the reverse detector 21b turns off, the self-propelled cart 7 moves forward within the pitch h6, and as a result, the self-propelled cart 7 moves forward within the pitch h6.
When it reaches the start end B of the second floor conveyor 4, the backward detector 21b is turned on by the attachment member I-22b placed in the pitches 1 to 6, and in response, the lifter 12 is turned on at the rising end. Therefore, the self-propelled trolley 7 stops.In that case, the front wheels 15 of the vehicle 1 transported by the self-propelled trolley 7
is located on the second floor directly above the conveyor 4.

In this state, as the second floor conveyor 4 is operating, the attachments 1 to 26 provided on the 270th floor conveyor 4 turn on the descending detector 24b.
The lifter 12 is lowered, and as a result, the front wheels 15 of the vehicle 1 are moved to the second position.
The vehicle 1 is lowered onto the floor conveyor 4 and thereafter transported by the second floor conveyor 174. In addition, when the self-propelled trolley 7 reaches its lower end, the lid 12 begins to move backward, and the traveling progress described above is followed in reverse until it reaches the first floor.
Return to end A of conveyor 3.

To explain the operation in that case, the self-propelled trolley 7 self-maintains the ON signal by the reverse detector 21b, so that the self-propelled trolley 7
When the self-propelled cart 7 moves backward in the pit 6 on the side of the second floor-conveyor 4 and, as a result, completely rides on the fixed lifter 9, its advance detector 21a is turned on by the other attachment 241), and the lifter 12 is at the lower end, the self-propelled cart 7 stops, and at the same time, the lifting switch 28b of the fixed lifter 9 is turned on by the self-propelled cart 7, so that the fixed lifter 9 rises. Note that the self-propelled cart 7 will pass under the vehicle 1 that has already been transported, but the self-propelled cart 117 will run inside the bit 6 with its lifter 12 lowered.
Even if the height of the self-propelled trolley 7 is higher than the minimum ground clearance of the vehicle 1,
It is possible to pass under the vehicle 1 without contacting it. When the fixed lifter 9 rises and reaches the uppermost Vt end, the attachment l-24b retreats from the table surface 9a, turning off the forward movement detector 21a.
Therefore, the self-propelled truck 7 starts moving backward again, and the guide line 19
along the first floor and return to the conveyor 3 side.

In that case, the fixed lifter 8 on the first floor conveyor A73 side
is at the highest point, and when the self-propelled cart 7 is completely mounted on it, the self-propelled cart 7 is lifted up by the other attachment 23b.
Since the forward movement detector 21a of the self-propelled trolley 7 is turned on,
stops on the fixed lifter 8, and there are lowering switches 27 around it.
Since b is connected to the self-propelled cart 7, the fixed lifter 8
descends.

When the fixed lifter 8 reaches the lowest end, the other attachment members 1 to 23b retract from the table surface 8a.
The forward movement detector 2'la is turned off again, and accordingly, the self-propelled cart 7 further retreats within the bit 5 toward the terminal end A of the first floor conveyor 3.

The self-propelled cart 7 that has returned to the terminal end A of the first floor conveyor A73 has the lifter 12 at the lower end and the forward movement detector 21.
Since vehicle a becomes a member by the attachment 22a, it stops at the terminal end A of the first floor conveyor 3 and waits until the following vehicle 1 is conveyed by the first floor conveyor 3. After being conveyed by the conveyor 3, the vehicle 1 operates in the same manner as described above.
is conveyed to the second floor - conveyor side.

In the above embodiment, the traveling and stopping of the self-propelled cart 7 is controlled in sequence by turning on and off the forward detector 21a and the backward detector 21b, and the ascending detector 24a and the descending detector 24b are turned on and off. By turning on and off the switch 24b, the lifting and lowering of the lifter 12 is sequentially controlled. However, the present invention is not limited to the above-mentioned embodiment, and the present invention is not limited to the above-mentioned embodiment.
The lowering may be performed by so-called program control according to a preset program. Furthermore, the means for raising and lowering the self-propelled cart 7 between the pitches 1 to 5, G and the floor surface 2 is not limited to the fixed lifter 8.9 shown in the above embodiment; If the climbing force of the running platform 17 is sufficiently large, the entrance/exit portion of the self-propelled cart 7 that is in charge of the bit 5.6 may be made into an inclined surface, and the inclined surface may be used as a lifting means in place of the fixed lifter 8.9. . Further, in the above embodiment, only the front wheels 15 of the vehicle 1 are lifted up, but the present invention may be configured to lift up the entire vehicle 1.

As is clear from the above description, since the transport device of the present invention is configured to transport vehicles using a self-propelled trolley, the main functions are concentrated on the self-propelled trolley, and therefore maintenance and inspection thereof is facilitated. Maintainability is improved, and since the self-propelled truck runs on a normal floor surface, there is no need for a particularly strong M foundation, and as a result, the overall cost can be reduced. In particular, in this invention, the first
Bits that are lowered from the work floor are formed at the end of the vehicle transport conveyor and the start end of the second vehicle transport conveyor, so the height of the self-propelled cart is higher than the minimum ground clearance of the vehicle to be transported. In other words, the height of the self-propelled trolley is not limited by the minimum ground clearance of the vehicle to be transported, and therefore the self-propelled trolley can be manufactured easily. 18 effects such as.

[Brief explanation of the drawing]

FIG. 1 is a diagram schematically showing one embodiment of the present invention;
Figure 2 shows J5 on the first floor - conveyor side pit 1 -.
A front view of the self-propelled cart on the +pull fixed lifter, and FIG. 3 is a side view of the same. 1...Vehicle, 2...Floor surface, 3...First
Floor conveyor, 4...270th arc conveyor,
5.6...Bit, 7...Self-propelled trolley, 8.9
... fixed lifter, 12... lifter, A... terminal end of the first floor conveyor, B... starting end of the 270th floor conveyor. Applicant Toyota Motor Corporation Representative Patent Attorney Takehisa Ichiichi (and 1 other person)

Claims (1)

[Claims] (The end part of the first vehicle transportation competition X7 and the second vehicle transportation competition in which the self-propelled cart moves the vehicle almost along the work floor surface)
The self-propelled trolley is arranged to be able to freely reciprocate between the starting end of the vehicle A7 and the self-propelled trolley, and is provided with an elevator for pushing up the vehicle so as to separate at least the wheels on the front side in the transport direction of the vehicle to be transported from the first vehicle transport conveyor A7. A device is provided at each of the terminal end side of the first vehicle conveyance conveyor 17 and the start end side of the second vehicle conveyance conveyor, in order to allow the self-propelled cart to enter the underside of the vehicle to be conveyed. A bit is formed that is lower than the floor surface, and furthermore, the front end of the first vehicle conveyance competition A7 side bit in the vehicle conveyance direction and the second vehicle conveyance competition A side pit are J5 in the vehicle conveyance direction.
Vehicle transport V4■ characterized in that a lifting means for raising and lowering the self-propelled cart between the inside of the bit and the work floor is provided at the rear end of the vehicle.