JPH0221719Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a ventilation system in a vehicle manufacturing line.

In the cab of a vehicle, interior parts such as ceiling lining are often attached to the ceiling and side walls of the cab using adhesives using organic solvents.In this case, workers working inside the cab, etc. Appropriate ventilation equipment must be provided to minimize the inhalation of organic solvents that are harmful to health. For this purpose, conventionally, a fixed supply air blow-off duct and an exhaust suction duct are placed facing each other on the side of the cab's outfitting line, and the air blown from the supply air blow-off duct is passed through the inside of the cab and then connected to the exhaust suction duct. By suctioning,
A device that measures ventilation inside a cab is already in practical use. However, with this conventional equipment, the cabs moving on the conveyor line must be ventilated over the entire period from the start to the end of the specified bonding work, so the ventilation system must be used. The disadvantages are that the required installation space is large, the required air volume is also significantly large, and the capacity of the ventilation and ventilation equipment is naturally large and expensive.

The present invention was devised to improve the drawbacks of the conventional ventilation systems mentioned above. A mounted traveling truck, a truck driving device for advancing and retracting the traveling truck, a base duct connected to an air supply source and rotatably supported on the traveling truck, and a free end extending from the base duct. An air supply side swing duct consisting of an extension duct having an air supply outlet at its part, a base duct connected to an exhaust source and rotatably supported on the traveling truck, and a free end extending from the base duct. an exhaust side swing duct consisting of an extension duct having an exhaust suction port at the end thereof, and an air supply side swing duct and an exhaust side swing duct each having an air supply outlet and an exhaust suction port facing the opening of the vehicle structure. The gist of this invention is a ventilation system for a vehicle manufacturing line, which is characterized by being equipped with a duct drive device that is driven to either a lowered position where the vehicle is moved or a raised position that is separated from the vehicle structure.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the figure, reference numeral 10 denotes the cab of a truck that is placed on a suitable conveyance device, such as a slat conveyor 12, and is transported at a slow speed in the direction of arrow A. In this embodiment, adhesive containing an organic solvent is coated on the ceiling of the truck. A ceiling lining (not shown) is attached using this method. Reference numeral 14 indicates a pair of running rails in the vehicle width direction, which are disposed above the slat conveyor 12 over the transfer section of the cab 10 where the ceiling lining is installed; and 16 are rolling wheels 1.
8 is a frame-shaped running trolley mounted on the running rail 14, 20 is a driven chain wheel rotatably supported by a cross member 22 horizontally suspended on the running rail 14, and 24 is also running. The main chain wheel is rotatably supported by a cross member 26 horizontally suspended on the rail 14, and the chain wheel is equipped with an electromagnetic clutch device 28.
It is connected to the electric motor 30 via. 32 is passed between the main and driven chain wheels 24 and 22,
A drive chain is connected to the traveling carriage 16 by a connector 34, 36 is a stopper that limits the forward position (in the direction of arrow A) of the traveling carriage 16, and 38 is a stopper that similarly limits the backward position of the traveling carriage 16. . (It is preferable that the connector 34 also serves as a device for adjusting the extension of the chain 32.) Next, 40 generally indicates the air supply side swing duct mounted on the traveling truck 16, and the duct The base duct 40a has a generally cylindrical shape, and the air supply outlet 4 extends from the base duct and has an air supply outlet 4 at its free end.
The base duct 40a has an opening at one end connected to an air supply source pipe 44 fixed on the traveling carriage 16. The air supply source pipe 44 is further connected to an air supply source such as a blower via a telescopic bellows pipe (not shown) disposed on the side of the traveling path of the traveling vehicle 16. The base duct 40a has its connecting end connected to the air supply pipe 44 inserted into the main pipe, and is rotatable by three support rollers 48 disposed on a bracket 46 suspended from the truck 16. is supported by Further, a support shaft 50 is protruded from the other closed end of the base duct 40a, and the support shaft is rotatably supported on a bracket 52 vertically disposed from the truck 16. Furthermore, a lever 54 is fixed to the free end of the support shaft 50, and the lever 54 is pivotally connected to a piston shaft of a pressure response device 56 that uses compressed air as a working medium.
The cylinder of the pressure-responsive device is swingably supported by the truck 16 via a pivot 58.

Reference numeral 60 generally indicates an exhaust side swing duct mounted on the traveling truck 16 in a pair with the air supply side swing duct 40, and the duct includes a base duct 60a having a generally cylindrical shape, and a base duct 60a having a generally cylindrical shape. The base duct 60a has an opening at one end connected to an exhaust source pipe 64 fixed on the traveling carriage 16. There is. The exhaust source pipe 64 is further connected to an exhaust source such as the air inlet of the blower or a separate exhaust fan via a telescopic bellows pipe (not shown) disposed on the side of the traveling path of the traveling truck 16. has been done. The base duct 60a has a connecting end with the exhaust source pipe 64 inserted into the same source pipe,
It is rotatably supported by three support rollers 68 disposed on a bracket 66 suspended from the truck 16. Further, a support shaft 70 is provided protruding from the other closed end of the base duct 60a, and the support shaft 70 is connected to the trolley 1.
It is rotatably supported on a bracket 72 vertically provided from 6. Furthermore, at the free end of the support shaft 70,
A lever 74 is fixed, and the lever 74 is pivotally connected to a piston shaft of a pressure-responsive device 76 that uses compressed air as a working medium, and the cylinder of the pressure-responsive device is connected to the piston shaft 76.
It is swingably supported by a trolley 16 via 8. Note that on the extension duct 60b, the conveyor 12 is in contact with the front edge of the roof of the cab 10.
Cab 1 is moved forward in the direction of arrow A by
An abutment member 80 for causing the traveling carriage 16 to travel in a driven manner is provided at the 0.

Reference numerals 82a and 82b are a pair of photoelectric tubes installed on a pedestal 84 hanging vertically from the traveling truck 16 between the air supply swing duct 40 and the exhaust swing duct 60. This is to confirm the cab position by receiving reflected light. Reference numeral 86 denotes a switch that is vertically disposed from the pedestal 84 and includes a flexible operating arm 88 for first detecting that the cab 10 has reached a predetermined ceiling lining adhesion work position, and 90 is a switch that starts the above-mentioned adhesion work. The work start switch is operated by a worker in the cab putting his/her hand out of a window or door opening and pulling a string 92, and the string 92 is placed at a position where the worker can operate it. To,
It is installed on the rail 14 and other structures in the factory.
94 is so that the worker inside the cab can put his hand out from the window or door opening and operate it when the gluing work is finished.
This is a work end switch that is hung vertically from the rail 14 or established from the factory floor on the side of the line. Furthermore, 96 and 98 are spring balancers connected to the extension ducts 40b and 60b of the air supply and exhaust side swing ducts by cables or chains, respectively, to balance the weight of these ducts, and are pressure responsive devices 56 and 76. This prevents the duct from falling unexpectedly when compressed air is lost.

The operating mode of the ventilation system will be explained in order as follows.

(i) Initially, when the cab 10 is not flowing on the conveyor 12, the extension ducts 40b and 60b of the swing ducts on the supply and exhaust sides are operated by the pressure responsive devices 56 and 76, respectively, as shown in FIG. It is held in the raised position shown by the chain line. Also, at this time, the traveling carriage 16 is held at the retreated position where it comes into contact with the stopper 38.

(ii) When the cab 10 is conveyed in the direction of arrow A by the conveyor 12 and the tip of its roof abuts against the flexible operating arm 88 to push and bend the arm, the switch 86 is operated. When the switch 86 is operated, a buzzer (not shown) or an intermittent sound is emitted to notify the worker in the cab that he/she has come to the position where the ceiling lining is to be bonded.

(iii) The worker responds to the above acoustic alarm signal by pulling the cord 9.
Work start switch 9 by towing 2
0 is manipulated. When the switch 90 is operated, the electromagnetic clutch device 28 is released, and the traveling truck 16 connected to the drive chain 32 is disconnected from the electric motor 30. When the cab 10 further moves forward slightly and reaches the proper position, the phototubes 82a,
82b confirms the cab position and generates a signal.

(iv) The signals from the phototubes 82a and 82b energize well-known solenoid valves (not shown) provided in the pressure-responsive devices 56 and 76, respectively, and the pressure-responsive devices actuate the levers 54 and 76, respectively. The base ducts 40a, 60a are rotated via the shaft 74, and the extension ducts 40b, 60b are lowered to the position shown by the solid line in FIG. In this lowered position, the air supply outlet 42 of the air supply side extension duct 40b faces the rear window opening of the cab 10, while the exhaust air intake port 62 of the exhaust side extension duct 60b faces the rear window opening of the cab 10.
is opposed to the windshield opening of the cab, so that the inside of the cab 10 is efficiently ventilated.

(v) In this state, the front end of the roof of the cab 10 comes into contact with the abutting member 80, and the cab 10 itself becomes a driving device, and the traveling bogie 16 moves along with the rail 14.
Run above in the direction of arrow A. During this time, the worker finishes the predetermined ceiling lining work, extends his hand from the door opening (or window opening) on the side of the cab, and presses the push-button operation termination switch 94.

(vi) By the operation of the work end switch 94, a solenoid valve (not shown) is deenergized (or in the case of a double-acting pressure-responsive device, the other solenoid valve is energized), and the pressure-responsive devices 56, 76 are activated as described above. and actuates in the opposite direction to the base duct 4 via the levers 54 and 74.
0a and 60a are rotated respectively to extend the duct 40.
b and 60b to the initial raised position. On the other hand, the electromagnetic clutch device 28 is engaged, the electric motor 30 is driven, and the drive chain 32 causes the traveling truck 16 to move backward in the direction opposite to the arrow A. The traveling cart 16 comes into contact with the stopper 38,
The rotation of the electric motor 30 is stopped by operating a limit switch (not shown).

By repeating the above operation process, the ceiling lining is bonded to a large number of cabs 10 in succession. According to this device, swing ducts 40 and 6 on the air supply side and the exhaust side are provided on the traveling truck 16.
By installing 0, compared to the case where a conventional fixed duct was installed on the side of the cab running line,
It is possible to significantly reduce the amount of air required for ventilation, downsize related equipment such as air blowers and exhaust blowers, and significantly reduce equipment costs and running costs. At the same time, there is an advantage that the space required for installing the ventilation device can be made much smaller than in the past.

Note that the present invention is not limited to the above-mentioned embodiments, and can be implemented with various changes and modifications within the scope of the registered claims. For example, the pressure-responsive devices 56, 76 are screws and
It can equally be replaced by a nut mechanism. In addition, the traveling truck 16 is connected to the cab 10,
In addition, instead of driving the motor 30 by the chain 32, the motor 30 can be used as a reversible motor, and both forward and backward movement can be performed by the chain 32. The device can also be used to move forward and backward.

As mentioned above, the ventilation system in the vehicle manufacturing line according to the present invention includes a running rail installed above the transport line for vehicle structures such as cabs that require ventilation, and a running rail mounted on the running rail. trolley,
A bogie drive device that moves the traveling bogie forward and backward;
An air supply side swing duct consisting of a base duct connected to an air supply source and rotatably supported on the traveling truck, and an extension duct extending from the base duct and having a supply air outlet at its free end. , an exhaust side swing duct comprising a base duct connected to an exhaust source and rotatably supported on the traveling truck; and an extension duct extending from the base duct and having an exhaust suction port at its free end; The intake swing duct and the exhaust swing duct are driven to either a lowered position where the intake air outlet and the exhaust intake inlet are opposed to the opening of the vehicle structure, or a raised position where they are separated from the vehicle structure. It is characterized by being equipped with a duct drive device, and can efficiently ventilate the working environment when constructing the interior of vehicle structures such as cabs using adhesives containing organic solvents. , the required air volume can be significantly reduced, equipment costs and operating costs required for ventilation can be reduced, and the installation space of the ventilation device can be reduced.

[Brief explanation of the drawing]

Figure 1 is a side view showing one embodiment of the present invention;
The figure is a plan view of FIG. 1. 10... Cab, 12... Slut conveyor,
14...Traveling rail, 16...Traveling trolley, 40...
...Air supply side swing duct, 56...Pressure response device, 60...Exhaust side swing duct, 76...
Pressure responsive device.

Claims (1)

[Scope of utility model registration request] A running rail installed above the transport line for vehicle structures such as cabs that require ventilation, a running bogie mounted on the running rail, a bogie drive device that moves the running bogie forward and backward, and an air supply source. An air supply side swing duct consisting of a base duct connected to the base duct and rotatably supported on the traveling carriage, and an extension duct extending from the base duct and having a supply air outlet at its free end, and an exhaust source. an exhaust side swing duct consisting of a base duct connected to and rotatably supported on the traveling truck; and an extension duct extending from the base duct and having an exhaust suction port at its free end;
and driving the intake side swing duct and the exhaust side swing duct to either a lowered position where the intake air outlet and the exhaust intake inlet are opposed to the opening of the vehicle structure, or a raised position where they are separated from the vehicle structure. A ventilation system for a vehicle production line, characterized in that it is equipped with a duct drive device that