JPH07330133A - Conveying facility - Google Patents

Abstract

PURPOSE:To automatically absorb a difference in speed between an overhead conveying device and a floor side conveying device by providing a speed detecting device for a drive chain in a chain-type drive device, and a setting unit for setting a speed of a self-traveling carriage. CONSTITUTION:A speed detecting device 20 detects a travel speed of a drive chain 13 in a chain type travel device 10, and delivers a travel speed signal 92 corresponding to its detected value to a control device 87 which also receives an operation signal 83 from an overhead conveying device 1. In a normal condition, the travel speed signal 82 from the detecting device 20 is used as a speed control signal 93 which is then transmitted to a self-traveling carriage 43. Accordingly, the running speed of the self-traveling carriage 43 is controlled when it receives the signal 93, and is moved, being synchronized with a moving body 4. Further, in an abnormal case in which no travel speed signal 92 is delivered to the control device 87, a setting unit 86 delivers a speed setting signal 94 which is used as the speed control signal 93, to the carriage 43.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transportation facility used in a line for incorporating an internal combustion engine (engine) in a vehicle body in an automobile manufacturing factory, for example.

[0002]

2. Description of the Related Art Conventionally, as this type, for example, the structures shown in FIGS. 10 and 11 have been provided. That is, the ceiling-side transfer device 100 that supports and transfers the vehicle body A includes a trolley guide rail 101 and a guide rail 102 installed above the trolley guide rail 101.
A trolley device 103 supported and guided by the trolley guide rail 101, a support device 104 attached to the lower part of the trolley device 103, and a trolley device 103 supported and guided by the driving body rail 102 to apply a moving force to the trolley device 103. The vehicle body A is transported on the upper transport line 106, which is composed of a drive device 105 using a chain to be provided.

A floor-side transfer device 110 for supporting and transferring the internal combustion engine B incorporated in the vehicle body A includes a plurality of wheels 111.
The trolley 112 having the above structure is provided with the support portion 114 of the internal combustion engine B through the lifting device 113. Further dolly 112
The passive pin 115 is hung from the front and back of the
A pit 116 that allows entry from above 15 is formed on the floor 117 side.

Inside the pit 116, guide rails 118 and 119 are arranged in two steps, that is, upper and lower guide rails 118 and 119, respectively.
Is a movable body (carriage) 120 on which the passive pin 115 can be freely engaged and disengaged.
The lower guide rail 119 supports a drive device (chain) 121 that applies a moving force to the movable body 120.
Support and guide. As a result, the carriage 112 is carrying the internal combustion engine B on the lower carrying line 122.

According to this conventional structure, the lower transfer line 12
At least a part of 2 is vertically opposed to the upper transfer line 106, and at this opposed part, the trolley device 103 and the carriage are
It is moving in sync with 112. Then, during the synchronous movement, the lifting device 113 raises the support portion 114,
As a result, the worker is carrying out the desired assembly with the internal combustion engine B assembled in the vehicle body A from below.

[0006]

According to the above-mentioned conventional configuration, the drive device 105 for moving the trolley device 103 and the carriage.
Even if the rotational speed of the drive unit 121 for moving the 112 is set correctly, the trolley unit 103 and the carriage 112 cannot be moved at the set correct speed due to the elongation of the chain of each part, etc. The assembly work cannot be performed easily and accurately due to disturbance.

Further, since the carriage 112 is always driven and driven by the driving device 121 at a predetermined speed, the carriage 112 becomes inefficient in traveling on a non-working line excluding the built-in portion and the length of the lower conveyance line 122 is increased. Many trolleys 11
2 is required.

It is an object of the present invention to automatically and quickly absorb the speed difference between the ceiling side transfer device and the floor side transfer device, and to prevent the floor side transfer device from facing the ceiling side transfer device. In the line section of the apparatus, it is possible to change the traveling speed to a high speed, and to provide a transfer facility that can operate the correction circuit when the automatic speed difference adjustment unit fails.

[0009]

In order to achieve the above object, the transfer equipment of the present invention comprises a ceiling side transfer device forming an upper transfer line and a floor side transfer device forming a lower transfer line. Part of them are provided facing each other in the vertical direction, and the ceiling-side transfer device is configured by a rail, a moving body supported and guided by the rail, and a chain-type drive device that applies a moving force to the moving body. The floor side transfer device is composed of a derivative provided on the floor side and a self-propelled carriage that is capable of automatically traveling while detecting the derivative, and a drive chain speed detection device of the chain type drive device and the self-propelled carriage. A setting device for setting the speed is set, and an abnormality of the speed detection device is determined by the operation signal of the ceiling side transfer device and the movement speed signal of the drive chain of the speed detection device, and the movement speed signal is self-propelled when normal. Speed control on the dolly And outputs as a signal, the speed setting signal of the setting device in the case of abnormal is provided a control device for outputting a speed control signal to the self-propelled carriage.

[0010]

According to the above-described structure of the present invention, in the ceiling side transfer device, the moving body can be moved on the upper transfer line by the chain type drive device, and in the floor side transfer device, the self-propelled carriage detects the derivative. In addition, the vehicle is running automatically while automatically correcting the displacement for the derivative. In such a moving state, the moving body and the self-propelled carriage can travel in a synchronized manner in a facing portion of both the transport lines so as to face each other.

At this time, the moving speed of the drive chain of the chain drive device is detected by the speed detecting device, and the moving speed signal is input from the speed detecting device to the control device based on the detected value. Here, the control device contains the moving speed signal and the operation signal of the ceiling side transfer device, and outputs the moving speed signal from the speed detecting device to the self-propelled carriage as a speed control signal in this normal case. obtain. As a result, the traveling speed of the self-propelled carriage that has received the speed control signal is controlled based on the signal value, and thus the self-propelled carriage is synchronously traveled at the same speed as the moving body.

Further, in the case of an abnormality in which the operation signal from the ceiling side transfer device is input to the control device but the movement speed signal from the speed detection device is not input, the movement speed signal is not input due to, for example, disconnection of wiring. In the case of abnormality, the speed setting signal from the setting device is output to the self-propelled carriage as a speed control signal. As a result, the self-propelled vehicle that receives the speed control signal controls the traveling speed based on the signal value,
Therefore, the vehicle travels at the same speed as the moving body or at a slightly different set speed.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. In FIG. 1 and FIG. 2, reference numeral 1 denotes a ceiling side transfer device, which is an example of a rail, a trolley guide rail 2, a guide rail 3 installed above the trolley guide rail 2, and a moving body supported and guided by the trolley guide rail 2. A trolley device 4 as an example, and a supporting device 5 attached to the trolley device 4,
The trolley device 4 is supported and guided by the guide rails 3.
A vehicle body A, which is an example of a first member, is supported by a supporting device 5 and is conveyed on an upper conveying line 6 by a chain type driving device 10 that gives a moving force to the.

As shown in FIGS. 1 to 4, the chain type drive device 10 includes a driven chain wheel 11 located on the upper hand side of the upper transfer line 6, a drive chain wheel 12 located on the lower hand side, and both chain wheels. 11,
It is composed of a drive chain 13 stretched between 12 and a drive unit (motor with reduction gear, etc.) 15 interlocked with a drive shaft 14 to which the drive chain wheel 12 is fixed. Then, the transmission projections 16 provided on the drive chain 13 at a predetermined pitch are attached to the trolley device 4
The passive protrusion 7 provided on the side is configured to be detachable.

The drive chain is opposed to the driven chain wheel 11.
A speed detection device 20 for detecting the moving speed of 13 is provided.
The speed detecting device 20 includes a movable table 23 arranged on a base frame 21 via a position adjusting tool 22, and a primary table rotatably provided around the vertical axis via a plurality of bearings on the movable table 23 side. Axis 24
In addition, the primary shaft 24 is used to interlock the secondary shaft 25 and both shafts 24, 25.
The small diameter gear 27 fixed to the large diameter gear 26 and the secondary shaft 25 fixed to the encoder, the encoder 28 for detecting the rotation speed of the secondary shaft 25, and the rotation speed detected by this encoder 28 to calculate the speed signal. It is composed of a converting device 29 for converting.

Between the driven shaft 17 to which the driven chain wheel 11 is fixed and the primary shaft 24, a large diameter chain wheel 30 fixed to the driven shaft 17, a small diameter chain wheel 31 fixed to the primary shaft 24, and both chains. The wheels 30 and 31 are interlocked with each other via an interlocking chain 32 stretched between the wheels 30 and 31.

A floor side transfer device 40 that supports and transfers the internal combustion engine B, which is an example of the second member, includes a derivative (guide magnet or the like) 41 provided on the floor 8 side and a detection device (guide that can detect this derivative 41). A self-propelled carriage 43 having a sensor or the like) 42. The self-propelled carriage 43 has a drive wheel 45 at the center of the front part of a main body 44 and a pair of left and right driven wheels 46 at the rear part.

In FIGS. 3 and 5 to 7, the drive wheel 45 is used.
Is rotatably attached to the main body 44 together with a traveling drive device (motor, etc.) 47, and a slewing drive device 48 including a winding transmission structure and a motor is controlled by a control panel 49 mounted on the front part of the main body 44. The turning is controlled. The control panel 49, the traveling drive device 47, etc. are the battery 50 mounted on the rear part of the main body 44.
The detection device 42 provided at the front of the main body 44 is connected to the control panel 49.

The self-propelled carriage 43 in the floor-side transfer device 40 having the above-described structure can automatically travel on the lower transfer line 51 while controlling the direction by the detection device 42 detecting the dielectric 41. At that time, the lower transfer line 51 is formed in an endless shape, and a part of the lower transfer line 51 is formed so as to vertically oppose the linear part of the upper transfer line 6, and thus the opposing part is formed in the assembling work part 52. There is. The dielectric 41 is laid in the groove 9 formed on the floor 8 side, and at that time, the feeder cable 54 is laid along the dielectric 41.
Is laid.

A detection device 42 capable of detecting the dielectric 41 is provided on a side portion of the drive wheel 45, and a feeder radio 54 which can oppose a feeder cable 54 is provided at a lower position of the detection device 42, and on the side portion thereof. A charging collector 55 is provided, and optical transmission devices 56 are provided on both sides. Here, the feeder radio 54 and the optical transmission device 56 are respectively connected to the control panel 49, and the collector 55 is connected to the battery 50.

At the center of the main body 44, a lower lift 61 is provided via a lower lift 60 composed of a cylinder device or the like. The lower lifting body 61 is provided with an upper lifting body 63 via an upper lifting device 62 including a cylinder device. Also, on the upper lift 63, the left and right guide devices
An inferior slide plate 65 is provided via 64, and an superior slide plate 67 is provided on the inferior slide plate 65 via an anteroposterior guide device 66. Further, from the upper slide plate 67, a supporting portion (skit) extending in the left-right direction and in the rear direction.
68 are arranged in series and are configured to support the internal combustion engine B between the support portions 68.

Elevating levers 69, which are operation tools for moving up and down the lifting / lowering devices (cylinder devices) 60 and 62, are provided at a plurality of positions on the main body 44, and a work completion button 70 is further provided. . An air unit 71 for supplying air to the lifting and lowering devices 60, 62 is mounted on the rear portion of the main body 44. The air unit 71 has an accumulator built therein and an air coupler 72.

As shown in FIGS. 2 and 6, in the above-mentioned endless lower transfer line 51, the first station 75 and the second station 76 are provided in the line portion from the end to the start of the assembling work section 52. And a standby unit 77 are arranged in this order, and ID tags 78 are provided at a plurality of positions on the floor 8 side.

Both stations 75 and 76 are formed in the loading section of the internal combustion engine B, and have an air supply device 79 and a charging device 80.
Is provided. The air replenishing device 79 is, for example, an air generating device such as a compressor, an air coupler attached to the end of a hose from the air generating device and connectable to the air coupler 72 in male and female form, and a cylinder for disconnecting and moving the air coupler. The charging device 80 is composed of a power feeding rail or the like with which the collector 55 can abut from above.

As shown in FIGS. 1 and 8, a ceiling side control panel 81 and a floor side control panel 85 are provided on the ground side, and the ceiling side control panel 81 sets the speed of the ceiling side transfer apparatus 1. A vessel 82 and the like are provided. The floor control panel 85 has the self-propelled carriage
A setting device 86 for setting the speed of 43 and a control device 87 for outputting a speed control signal to the self-propelled carriage 43 are provided.

Here, the speed setter 82 sets the operating speed of the ceiling side transfer device 1 in accordance with the desired assembly conditions. In addition, the setting device 86 is the ceiling side transfer device 1 that has been set.
The average speed (ideal speed) of the operating speed of is set. At that time, the speed setter 82 and the setter 86 may be integrated or may be interlocked with each other.

The control device 87 has a switching unit 88, a relay 89, a switch 90, etc., and is connected to the speed detecting device 20 via a wiring 91. Then, the control device 87 causes the operation signal 83 from the ceiling side control panel 81 and the moving speed signal 92 from the speed detection device 20 to enter the switching unit 88, and detects an abnormality on the speed detection device 20 side. It is configured to judge.

That is, the control device 87 outputs the moving speed signal 92 from the speed detecting device 20 to the self-propelled carriage 43 as the speed control signal 93 when both signals 83 and 92 are normal in the input state. In the case of an abnormality such as when 91 is disconnected, switch 89 controls relay 89 to switch
90 is automatically switched, and the speed setting signal 94 of the setting device 86 is output to the self-propelled carriage 43 as the speed control signal 93.

The operation of the above embodiment will be described below. In the ceiling-side transfer device 1, the trolley device 4 moves by receiving the moving force from the chain-type drive device 10, and thus transfers the vehicle body A on the upper transfer line 6 at a predetermined speed.
Further, in the floor side transfer device 40, the drive wheels 45 are forcibly rotated by the electric power of the battery 50 via the traveling drive device 47,
As a result, the self-propelled carriage 43 can automatically travel on the lower transfer line 51.

At this time, when the detection device 42 detects the dielectric 41 and the position of the detection device 42 is about to deviate with respect to the dielectric 41, the control panel 49 issues a forward or reverse command to the turning drive device 48. Then, the self-propelled carriage 43 can be automatically traveled on the lower conveyance line 51 while automatically correcting the displacement of the self-propelled carriage 43.

The self-propelled carriage 43 supporting the internal combustion engine B is stopped by the standby unit 77. At this time, in the self-propelled carriage 43, the upper elevating body 63 is lowered with respect to the lower elevating body 61 by the lowering movement of the upper elevating device 62, and the correction position thereof is locked. Further, the position of the upper slide plate 67 is locked with respect to the lower slide plate 65.

In such a state, the self-propelled carriage 43 waiting in the waiting section 77 is automatically driven again when the trolley device 4 reaches a predetermined position on the upper transfer line 6, and enters the built-in working section 52. go. Then, as shown by the solid lines in FIGS. 1 and 2, the self-propelled carriage 43 is mounted on the trolley device 4 side in a state where the internal combustion engine B is opposed to a predetermined position of the vehicle body A which has been conveyed through the upper conveyance line 6. Run synchronously.

At this time, the moving speed on the trolley device 4 side is detected by the speed detecting device 20, and based on this, the control device
The speed control signal 93 is output from 87 to the feeder cable 53. That is, the trolley device 4 moves integrally with the drive chain 13, and the amount of movement of the drive chain 13 includes the driven chain wheel 11, the driven shaft 17, the large chain wheel 30, the interlocking chain 32, and the small chain wheel 31. The rotation speed of the primary shaft 24 is taken out via the large diameter gear 26 and the small diameter gear 27 and transmitted to the secondary shaft 25 to operate the encoder 28.

The operation signal of the encoder 28 is converted into a conversion device 29.
After performing speed calculation or the like here, the moving speed signal 92 is input from the speed detection device 20 to the control device 87 via the wiring 91. Here, the switching unit 88 of the control device 87 includes a moving speed signal 92 from the speed detection device 20 and an operation signal 83 from the ceiling side control panel 81. In this normal case, the speed detection device The moving speed signal 92 from 20 can be output to the feeder cable 53 as a speed control signal 93.

As a result, the self-propelled carriage 43 which receives the speed control signal 93 from the feeder cable 53 via the feeder radio 54 controls the traveling drive device 47 by the control panel 49 based on the signal value, and thus the trolley The vehicle travels synchronously at the same speed as the moving speed of the device 4.

Further, in the case of an abnormality in which the operation signal 83 from the ceiling side control panel 81 is input to the switching section 88 of the control device 87, but the moving speed signal 92 from the speed detection device 20 is not input, for example, In the case of an abnormality in which the wiring 91 is broken and the movement speed signal 92 cannot be input, the switching unit 88 controls the relay 89 to automatically switch the switch 90.

As a result, the speed setting signal 94 from the setting device 86 is output to the feeder cable 53 as the speed control signal 93. Then, the self-propelled carriage 43 which has received the speed control signal 93 from the feeder cable 53 via the feeder radio 54 controls the traveling drive device 47 by the control panel 49 based on the signal value, and thus the movement on the trolley device 4 side. The vehicle runs at the same speed as or a slightly different set speed.

In this built-in working unit 52, a self-propelled carriage
A worker is attached to 43 and walks in synchronization with the synchronized driving. During this walking, the operator operates the elevating lever 69, and the elevating movement of the lower elevating / lowering device 60 causes the lower elevating body to move against the main body 44.
61 is lifted, and the upper lifting / lowering device 62 is lifted with respect to the lower lifting / lowering body 61 by the lifting motion of the upper / lower lifting / lowering device 62.

The above-described upper elevating body 63 is raised little by little, during which the operator makes a final position correction of the internal combustion engine B with respect to the vehicle body A. That is, the worker applies a force to the internal combustion engine B in the position correcting direction. As a result, position correction in the left-right direction is made possible by the horizontal structure of the lower slide plate 65 relative to the upper lift 63 due to the allowable structure of the left-right guide device 64. The permissible structure of the device 66 allows the upper slide plate 67 to move back and forth with respect to the lower slide plate 65.

In this way, the internal combustion engine B whose position has been corrected with respect to the vehicle body A is incorporated into the vehicle body A from below as shown by the phantom lines in FIGS. Fixed work is performed. Then, the worker who finishes the fixing operation operates the elevating lever 69 in the opposite manner to the above, lowers the lower elevating body 61 with respect to the main body 44 by the lowering movement of the lower elevating device 60, and the upper elevating device. The lowering movement of 62 lowers the upper lifting body 63 with respect to the lower lifting body 61. The lowering of the upper lifting / lowering body 63 automatically locks the upper / lower lifting body 63.

Further, the worker pushes the work completion button 70 while operating the lifting lever 69 in reverse. This completes the work, and the self-propelled carriage 43 automatically travels on the lower conveyance line 51 at a high speed and stops at one of the stations 75 and 76.
At the time of this stop, a new internal combustion engine B is loaded on the support portion 68 by the operation of the loading device or manual work.

At the time of stop, the collector 55 is the charging device.
The battery 50 is automatically contacted with 80 to be charged, and the air coupler of the air replenishing device 79 is connected to the air coupler 72 of the air unit 71 to replenish the accumulator of the air unit 71 with air. Then, the self-propelled carriage 43 automatically travels again on the lower conveyance line 51 at high speed,
The standby unit 77 temporarily stops and waits. As described above, the self-propelled carriage 43 traveling on the lower conveyance line 51 wirelessly exchanges with the ID tag 78, and seat confirmation is performed.

When the stations 75 and 76 are provided at two locations (plural locations) as shown in the above embodiment, the self-propelled carriage is used.
There is sufficient downtime at stations 75 and 76 of 43, but this may be done in one place. Further, in the above embodiment, a guide magnet is shown as the inductor 41, but this may be a magnetic tape or the like, and in the case of a magnetic tape, a pickup coil is used as the detection device 42.

In the above embodiment, the speed detecting device 20 for detecting the moving speed of the drive chain 13 is provided on the driven chain wheel 11 side.
This may be a type in which the speed detecting device 20 is provided on the drive chain wheel 12 side. Further, although the vehicle body A is shown as the first member and the internal combustion engine B is shown as the second member in the above-mentioned embodiment, this can also be used for assembling other members.

[0045]

According to the present invention having the above-described structure, when the chain type drive device is adopted for the ceiling side transfer device, the traveling speed of the drive chain portion, which is the main cause of the disturbance of the synchronous traveling, is detected and the self-propelled carriage is detected. It is possible to control the speed of the moving body, which allows the traveling speed of the self-propelled carriage to be automatically adjusted to the traveling speed of the moving body so that the two can be synchronized at the same speed at all times, making it easy and accurate to perform various operations between the two conveyors. It can be carried out.

When an abnormality such as a failure of the speed detecting device which is an automatic speed difference adjusting unit or a break in the wiring to the control device occurs, a speed setting signal preset in the setting device causes the self-propelled carriage to move at a desired running speed. The vehicle can be driven in and the transport equipment can always be operated without stopping.

Further, by using the self-propelled carriage, it is possible to easily change the traveling speed on the lower conveyance line, and to perform efficient high-speed traveling on the non-work line section which does not travel synchronously, In addition, the number of units used on the lower transportation line can be reduced.

[Brief description of drawings]

FIG. 1 is a side view of a synchronous traveling unit of a transportation facility according to an embodiment of the present invention.

FIG. 2 is a front view of a synchronous traveling unit of the transportation facility.

FIG. 3 is a schematic plan view showing an entire line of the transfer facility.

FIG. 4 is a partially cutaway side view of the speed detection device portion.

FIG. 5 is a side view of the self-propelled carriage.

FIG. 6 is a rear view of the self-propelled carriage.

FIG. 7 is a partially cutaway plan view of the self-propelled carriage.

FIG. 8 is an explanatory diagram of the control device section.

FIG. 9 is a flowchart of the same control.

FIG. 10 is a side view of the synchronous traveling unit of the transfer facility, showing the conventional example.

FIG. 11 is a front view of a synchronous traveling unit of the transfer facility.

[Explanation of symbols]

 1 Ceiling-side transfer device 2 Trolley guide rail (rail) 4 Trolley device (moving body) 5 Support device 6 Upper transfer line 7 Passive protrusion 8 Floor 10 Chain type drive device 13 Drive chain 20 Speed detection device 28 Encoder 29 Conversion device 41 Derivative 42 Detector 43 Self-propelled trolley 51 Lower transfer line 52 Built-in working part 53 Feeder cable 54 Feeder radio 68 Support 81 Ceiling side control panel 82 Speed setting device 83 Operation signal 85 Floor control panel 86 Setting device 87 Control device 88 Switching Part 89 Relay 90 Switch 91 Wiring 92 Moving speed signal 93 Speed control signal 94 Speed setting signal A Vehicle body (first member) B Internal combustion engine (second member)

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kenzo Onikuta 3-2-11 Minejima, Nishiyodogawa-ku, Osaka City, Osaka Prefecture Daifuku Co., Ltd. Within the corporation

Claims (1)

[Claims] 1. A ceiling-side transfer device that forms an upper transfer line and a floor-side transfer device that forms a lower transfer line are provided such that a part of both lines are vertically opposed to each other, and the ceiling-side transfer device comprises: The rail, the moving body supported and guided by the rail, and the chain-type drive device that gives a moving force to the moving body. The floor-side transfer device includes a derivative provided on the floor side and the derivative. It is configured by a self-propelled carriage that is capable of automatically traveling while detecting, a speed detection device for the drive chain of the chain type drive device, and a setting device for setting the speed of the self-propelled carriage are provided, and the operation of the ceiling side transfer device is performed. Abnormality of the speed detecting device is determined by the signal and the moving speed signal of the drive chain of the speed detecting device, and if normal, the moving speed signal is output to the self-propelled carriage as a speed control signal. Speed setting signal Conveying equipment, which is provided with a control device for outputting to the self-propelled carriage as a speed control signal.