JPS62122873A - Vehicle gearing detector - Google Patents

Abstract

PURPOSE:To prevent failure of a conveyer and breakage of vehicles by installing a gearing detecting switch which operates when a movable bed in a vehicle assemble line is slided by a given distance. CONSTITUTION:A movable bed 20 supports an inclined plate 10, and is slidably supported in a transfer direction of vehicles C1 and C2. A gearing detecting switch 50 detects gearing driving wheels C11, C12 of vehicles C1, C2, and operates a switch when the movable bed 20 is slided to a given position against a spring. When the driving wheel C21 is geared, it does not rotate and slides by large friction between the driving wheel and the inclined plate, and strikes a gearing detecting switch 50 to operate a switch. When the switch is operated, a control circuit outputs an alarm signal to operate an alarm buzzer 81, then gear release operation is performed.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention provides a method for handling vehicles installed on a vehicle assembly line and carried in a suspended state by an overhead conveyor or the like.
The present invention relates to an in-gear detection device for a vehicle that detects the in-gear state of a drive wheel when the vehicle is transferred onto a slat conveyor.

(Prior Art and Problems) Conventionally, in a vehicle assembly line, there was no device for detecting the gear engagement state of the drive wheels of the vehicles flowing on the line, and therefore there were problems as described below.

Vehicles on the line are mainly transported by a slat conveyor that transports the vehicles on a transport surface, but the transport route may include sections where the vehicles are transferred from one slat conveyor to another.

In the transfer section, a wheel rolling section is provided between the slat conveyors, and during transfer, the wheels roll through the wheel rolling section before transferring to the next conveyor.

However, at this time, the drive wheels could not be transferred on the left wheel rolling section where the driving wheels were in gear (the transmission was not in neutral), and the vehicle stopped, and the vehicle stopped. The slat conveyor carrying the wheels would be overloaded and cause a breakdown.

Furthermore, if there are drive wheels in the vehicle transfer direction, the vehicle will be pushed from behind by the transfer force of the slat conveyor, and the vehicle will move in the vehicle transfer direction using the drive wheels that are stopped on the wheel rolling section as a fulcrum. If the vehicle is shaken from side to side, the vehicle may fall off the slat conveyor and be damaged, causing major damage.

(Means for Solving the Problems) The present invention has been made for the purpose of solving the above-mentioned problems, and to achieve this purpose, the present invention has the following features:
A movable platform supports a movable platform that is capable of contacting the drive wheels of a vehicle being transported in a suspended state by a conveyor and that is inclined upward with respect to the vehicle transportation direction. A biasing means for biasing the movable base in a direction opposite to the vehicle transport direction is provided between the movable base and the fixed base, and the movable base is movable against the biasing force of the biasing means. The device is equipped with a gear-on detection switch that is activated when the table is slid a predetermined amount.

(Function) In the gear engagement detection device of the present invention, when the inclined plate comes into contact with the drive wheel of a vehicle being transported in a suspended state, when the drive wheel is in the geared state, the inclined plate and the fixed drive wheel are connected. A large frictional force is generated between the two and the inclined plate is pushed in the direction of vehicle transport.
As a result, the movable platform is largely slid against the urging means, and when the drive wheels are not in gear, the drive wheels roll on the inclined plate, so the inclined plate is moved in the vehicle transport direction. The pushing force is small, so the sliding amount of the movable base is small.

Therefore, by arranging the gear-on detection switch at a predetermined position that the movable base reaches only when the gear is on, it is possible to detect the gear-on by the switch operation of the gear-on detection switch.

(Example) Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

First, the configuration of the embodiment shown in FIGS. 1 to 6 will be explained.

A is a gear entry detection device for a vehicle according to an embodiment of the present invention, which includes an inclined plate 10. Movable stand 20. Fixed base 30, spring (
Biasing means)40. It is equipped with a gear detection switch 50, and as shown in FIG. 2, it is installed on a pedestal B2 placed below the overhead conveyor B1 (7) of the vehicle assembly line B, and is suspended from the overhead conveyor B1 for transportation. They are placed on each side of the vehicle so that they are located directly below both the left and right wheels of the vehicle.

In the figure, CI and C2 indicate vehicles, and C1l and C21 are driving wheels of the vehicles CI and C2.

The vehicle assembly line B is a line where front-wheel drive vehicles flow, and a first slat conveyor B3 is located in the transfer direction of the overhead conveyor B1. 2nd slat conveyor B
4 is installed, and both conveyors B3. A wheel rolling section B5 is provided between B4.

Further, a lifter B6 is provided on the 751 slat conveyor B3 to raise the vehicle suspension device Bll of the overhead conveyor B1.

The inclined plate 10 is supported by a movable platform 20 so as to be able to contact the drive wheels C1l and C21 of the vehicles CI and C2 transported by the overhead conveyor B1.
The rear part is the axis 11 with respect to the transport direction of the vehicles CI and C2.
The front part is supported so as to be rotatable by the lifting cylinder 23, and the front part is supported so as to be raised by the raising cylinder 23, so that it can be tilted from an upwardly inclined state to a horizontal state with respect to the transfer direction.

Further, the front end portion of the inclined plate 10 is bent so as to be substantially horizontal when the inclined plate 10 is in the upwardly inclined state.

The movable base 20 supports the inclined plate 10 as described above, and is supported by the fixed base 30 so as to be slidable in the transport direction of the vehicles C1 and C2.As shown in FIG. It includes a movable plate 21, a support base 22, and a rising cylinder 23.

The movable plate 21 has four rollers 2 provided on the front, rear, left and right sides.
4 and 24 (two not shown), and the fixed base 30
It is provided so as to be slidable back and forth in the vehicle transport direction.

The support stand 22 is provided with a support bracket 25 that rotatably supports the inclined plate 10.

The rising cylinder 23 is cylinder 231 (7)! The end of the piston 232 is pivotally attached to the movable plate 21, and the tip of the piston 232 is pivoted to the inclined plate 10. The inclined plate 10 is tilted upward by extension, and the inclined plate 10 is placed in a horizontal or near-horizontal retracted state by contraction.

This rising cylinder 23 is connected to the pressure source 100 via a solenoid valve 26, shortened when connected to the first switching valve 261 side, and extended when connected to the second switching valve 262 side. It is connected to the first switching valve 261, and when the solenoid valve 26 inputs the rising signal (b) from the control circuit 60 described later, the second switching valve 262
The connection can be switched to .

The fixed table 30 supports the inclined plate 10 and the movable table 20, and as shown in FIG. and a column 3 that supports the guide member 31.
2, and as shown in FIG. 2, it is installed on the pedestal B2.

As shown in FIG. 1, the spring 40 is provided between the rear end of the movable base 20 and the rear end of the guide member 31 of the fixed base 30, and prevents the movable base 20 from sliding in the transfer direction. On the other hand, a predetermined slide regulating force is applied by the shortening biasing force, and the movable base 20 is restored to the predetermined position before sliding.

The gear-on detection switch 50 is a vehicle CI.

This is to detect that the drive wheels C1l and C21 of C2 are in gear, and as shown in FIG. The switch is arranged so that it is activated when the switch slides to that position against the shortening force of the switch.

Here, the arrangement of the gear detection switch 50 will be explained in more detail.

FIG. 4 shows a case where the driving wheel C21 is not in gear. In this case, since the driving wheel C21 moves along the inclined plate 10, friction occurs between the driving wheel C21 and the inclined plate 10. is small, and therefore, the sliding amount of the inclined plate 10 and the movable base 20 due to the movement of the drive wheel C21 is small.

FIG. 5 shows a case where the drive wheel C21 is in gear. In this case, the drive wheel C21 does not roll, so
A large frictional force is generated between the driving wheel C21 and the inclined plate 10, and the inclined plate 10 and the movable base 20 are largely slid against the shortening force of the spring 40 as the driving wheel C21 moves.

Therefore, the gear engagement detection switch 50 is arranged at a position where it is activated when the movable base 20 is slid by a predetermined amount, which is greater than the sliding amount of the movable base 20 when the gear is not engaged.

The gear entry detection switch 50 and the solenoid valve 2
6 is connected to a control circuit 60 provided in a control panel 600, as shown in FIGS. 2 and 3.

The control circuit 60 controls the operation of the gear entry detection device A and the alarm activation when the gear entry is detected. switch 71, second position switch 72.
The third position switch 73 and the completion switch 74 are connected,
Also, on the output side, in addition to the solenoid valve 26, an alarm buzzer 81. An overhead conveyor drive 82 is connected.

The control circuit 60 also includes a detection circuit 6t and a dual-report circuit 6t.
2. An emergency stop circuit 63 is provided.

The detection circuit 61 includes a gear detection device A.

Drive wheel C with inclined plate 10 facing upward in the vehicle transport direction
This detection circuit 61 is activated when the activation signal (a) of the first position switch 71 is input, and sends a rising signal (
b) to switch the ascending cylinder 23 to the second switching valve 26.
2 and extend it.

Note that the first position switch 71 is activated when struck by the switch actuation rod B12, and the vehicle CI is activated.

It is arranged at a position where it is struck when C2 approaches the gear engagement detection device A.

Further, the second and third position switches 72 and 73 are also struck by the switch actuating rod B12 and actuated.

Further, the detection circuit 61 stops operating when the activation signal (C) of the second position switch 72 is input, and the second position switch 72 stops operating when the drive wheels C11 and C21 pass the gear detection device A. The switch is placed in the activated position.

When gear engagement is detected, the alarm circuit 62 outputs an alarm signal (d) to the alarm buzzer 81 to notify the gear engagement.
C) is activated.

Further, this alarm circuit 62 stops operating in response to the activation signal (f) from the completion switch 74.

The emergency stop circuit 63 is connected to the first slat conveyor B when the vehicle in gear passes through the overhead conveyor Bl.
This emergency stop circuit 63 stops the overhead conveyor B1 when it is about to go to the
is when the third position switch 73 is activated while the alarm circuit 62 is activated.
It is activated when an activation signal (g) is input from the controller 82, and outputs a stop signal (h) to the overhead conveyor drive device 82.

Further, this emergency stop circuit 63 also stops its operation in response to the activation signal (f) from the completion switch 74.

The completion switch 74 is a switch that indicates that the work to release the gear state has been performed by the switch operation, and this completion switch 74 is provided closer to the first slat conveyor B3 than the gear entry detection device A. The switch is operated by the operator's hand after the operator performs a gear release operation.

Next, the operation of the embodiment will be explained.

First, the operation flow of the control circuit 60 will be explained with reference to FIG.

(a) When the drive wheel C21 is not in gear.

The operating flow when the drive wheel C21 is not in gear is Step Sl → Step S2 → Step S3 → Step S
4→Step S5→Step S6→Step S7.

In addition, in step S1, the presence or absence of the actuation signal (a) from the first position switch 71 is determined, and in step S3, a rise signal (b) is output to the solenoid valve 26,
In step S4, the presence or absence of the actuation signal (C) from the gear-on detection switch 50 is determined, and in step S5, the presence or absence of the actuation signal (e) from the second position switch 72 is determined.

(b) When the drive wheel C21 is in gear and is released from gear immediately after being detected as being in gear.

The flow of operation is step 31 → step S2 → step S3 → step S4 → step S8 → step S9 → step 510 - step S11 → step S12 → step S13 → step S14 → step S15 → step 316.

Incidentally, in step Sll, an alarm signal (d) is sent to the alarm buzzer 81.
is output, the presence or absence of the activation signal (g) from the third position switch 73 is determined in step 512, and step S13
The presence or absence of the activation signal (f) from the completion switch 74 is determined.

Further, after the alarm circuit 62 is activated (step S8
), until the activation signal (f) is input from the completion switch 74, the process goes through step 313 → step SIO → step 51.
1→Step S12→Step 313 is repeated.

(c) When the drive wheel C21 is in gear and the gear release operation is not performed after the gear engagement is detected.

The flow of operation is as follows: Step S1 → Step S2 → Step S3 → Step S4 → Step S8 → Step S9 → Step S10 → Step Sll → Step S12 → Step SL7 → Step S18 → Step S13 → Step 514 → Step S15 Become.

Note that in step 518, a stop signal (h) is output to the overhead conveyor drive device 82.

Further, after the emergency stop circuit 63 is activated (step 517),
The flow of step S17→step S18→step S13→step SIO→step S12→step S17 is repeated until the completion switch 74 is operated.

Next, the operation of the gearing device A of the vehicle will be explained.

First, the vehicle C2 is sent and the first position switch 71
When the switch is actuated by being struck by the switch actuating rod B12, the control circuit 60 outputs a rising signal (b) to the solenoid valve 26, which switches to the second switching valve 262 and extends the rising sill 23. As shown in FIG. 1, the inclined plate 10 is inclined upward with respect to the transport direction of the vehicle C2.

Next, when the driving wheel C21 of the vehicle C2 comes into contact with the inclined plate 10, if it is not in gear, the driving wheel C21 rotates and rises due to the elasticity of the suspension and climbs over the inclined plate 10. .

At this time, as described above, the driving wheel C21 and the inclined plate lO
Because the friction between the movable base 20 and The output of b) is stopped, the solenoid valve 26 is switched to the first switching valve 261, and the inclined plate 10 is tilted to the retracted state.

On the other hand, when the drive wheel C21 is in gear, the drive wheel C21 does not rotate, and since the friction between the drive wheel C21 and the inclined plate is large, the inclined plate 10 and the movable base 20 As the gear moves, it slides and hits the gear detection switch 50 to operate the switch.

When the gear detection switch 50 is activated, the control circuit 60 receives the activation signal (c).

Output the alarm signal (d) to activate the alarm buzzer 81,
By this buzzer sound, the operator knows that the gear is engaged and the vehicle C
It is possible to perform a gear release operation before Slat 2 goes to the first slat conveyor B3.

The operation of the alarm buzzer 81 is stopped by the operator operating the completion switch 74 after the gear release operation.

In addition, the worker's gear release operation was delayed and vehicle C2 was in the first position.
When the third position switch 73 is activated after being transferred to just before the slat conveyor B3, the control circuit 60
A stop signal (h
) is output, and the transfer of vehicle C2 is stopped.

In this case as well, when the completion switch 74 is operated after the gear release operation, the operation of the alarm buzzer 81 is stopped, and at the same time, the overhead conveyor drive device 8
2 also resumes driving.

Although the embodiments of the present invention have been described above in detail with reference to the drawings, the specific configuration is not limited to these embodiments, and the present invention may be modified without departing from the gist of the present invention. included.

For example, in the embodiment, a coil spring is used as the biasing means, but the present invention is not limited to this, as long as it biases the movable platform in the direction opposite to the vehicle transport direction, and springs using rubber or fluid pressure may be used. , others may be used.

Further, in the embodiment, the inclined plate is formed so as to be tiltable by the raising cylinder, but it may be fixed to a movable base.

(Effects of the Invention) As explained above, since gear entry can be detected by installing gear entry detection on a vehicle of the present invention, gear entry can be detected before the transfer section of the slat conveyor on a vehicle assembly line, etc. By detecting this, it is possible to prevent conveyor failure and vehicle damage due to gear engagement.

Furthermore, in addition to the above-mentioned effects, in the embodiment, when the gear detection switch detects that the drive wheel is in gear, the alarm buzzer outputs an alarm sound, so that the worker can You can know when the gear is engaged.

Further, since the overhead conveyor is stopped by the operation of the third position switch, it is possible to reliably prevent a vehicle that is still in gear from being placed on the slat conveyor.

[Brief explanation of drawings]

FIG. 1 is a side view showing a gear detection device for a vehicle according to a first embodiment of the present invention, FIG. 2 is a diagram showing an assembly line equipped with the embodiment device, and FIG. 3 is a main part of the embodiment device. 4 and 5 are diagrams showing the operation of the embodiment device, and FIG. 6 is a flowchart showing the operation flow of the control circuit of the embodiment device. 10... Inclined plate Bl... Overhead conveyor (conveyor) 20.
...Movable base 30...Fixed base 40...Spring (biasing means) 50...Gear-on detection switch C1, C2...Vehicle C1l, C21...Drive wheel No. 41

Claims (1)

[Claims] 1) A movable platform supports an inclined plate that is capable of contacting the drive wheels of a vehicle being transported in a suspended state by a conveyor and that is inclined upward with respect to the vehicle transport direction; A biasing means is provided to be slidable in the vehicle transport direction with respect to the fixed base, and between the movable base and the fixed base, biasing means is provided for biasing the movable base in a direction opposite to the vehicle transport direction, and the biasing means 1. A gear entry detection device for a vehicle, characterized in that a gear entry detection switch is provided which operates the switch when the movable base is slid by a predetermined amount against the urging force of the vehicle.