JP2729387B2 - Assembly line - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an assembly line for assembling a copying machine or the like.

<Prior Art and its Defects> For example, in a copier assembly line, a plurality of work carts are moved from an assembly start area to a product unloading area through a plurality of assembly areas and adjustment areas along an endless movement path. You. In the assembly start area, a frame body of the copying machine (a frame body on which various components are not mounted) is placed on a carriage. Various parts are mounted on the frame body while the carriage is moved through each mounting area, and various parts are mounted on the frame body while the carriage is moved through each adjustment area. Various adjustments are performed.
When the cart is moved to the product unloading area in this way,
Substantially all of the components are assembled to the frame on the trolley, and adjustments to the various assembled components are completed. In the product unloading area, the copier as an assembled product is unloaded from the cart and packed in a packaging box as required.

In such an assembly line, a drive line extends through an assembly start area, an assembly area, an adjustment area, and a product unloading area in order to move the cart as required, and each cart is moved along the drive line. You.

However, in the conventional assembly line, the drive line is provided in a groove shape on the floor of the factory, and therefore, problems to be solved such as dust easily enter the drive line and construction for the line are not easy. Exists.

In the above-described assembly line, a power supply line for supplying electricity to the truck moved along the drive line is also provided along the drive line.

However, conventionally, the power supply line is provided on the ceiling of the factory, and therefore, an electric wire that electrically connects the power supply line on the ceiling and the bogie hangs down, and this electric wire becomes an obstacle, resulting in poor workability. There is a problem to be solved, such as difficulty in line-out.

<Object of the Invention> The present invention has been made based on the above-mentioned facts. The main objects of the present invention are that the installation of the drive line and the power supply line is easy and the construction cost is low. An object of the present invention is to provide a new assembly line that can be reduced in number, can improve workability, can effectively use the floor of a factory, and has a simple configuration as a whole.

<Summary of the Invention> According to the present invention, in an assembly line for moving an assembling trolley along a predetermined moving path and assembling products while the trolley is moving, a drive line for moving the trolley and the trolley And a power supply line for supplying electricity to the floor along the movement path, the drive line is an elongated loop, and between the one-side traveling portion and the other-side traveling portion of the drive line. A power supply line for the carriage moved by the one-side traveling part and a power supply line for the carriage moved by the other-side traveling part are provided, and the one-side traveling part and the other-side traveling A work area exists outside the unit, each of the power supply lines includes a power supply rail, the power supply rail includes an insulating member, and a plurality of terminal rails that are vertically spaced from the insulating member. A current collecting means and An operation unit and a plurality of electric outlets are provided, and the current collecting means includes a first arm connected to the carriage, an operation position extending toward the power supply rail with respect to the first arm, and A second arm movably mounted between a storage position extending along one side of the cart and a current collecting terminal mounted on a tip end of the second arm; A plurality of operation units are provided at intervals in the vertical direction corresponding to the terminal rails; the operation unit includes a main switch for both frequency switching and a voltage switching switch; Each of the outlets is electrically connected via the main switch and the voltage changeover switch, and each of the current collecting terminals is associated with the corresponding one of the second arms when the second arm is positioned in the operating position. Electrically connected to the terminal rails An assembly line is provided.

<Specific Examples of the Invention> Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

First, an overview of the entire assembly line will be described with reference to FIG.

The assembly line shown in FIG. 1 includes a pair of large pulleys 2 and 4 spaced apart in the left-right direction in FIG. 1 and an endless drive chain 6 wound around the pair of large pulleys 2 and 4. The drive chain 6 constituting the drive line includes an assembling area indicated by number 10 from an assembling start area indicated by number 8 (a plurality of assembling work positions for performing the assembling work exist along the drive chain 6), and number 12 (The plurality of adjustment work positions for performing the adjustment work exist along the drive chain 6) and the product carry-out area 14, and extend again to the assembly start area 8. In the vicinity of one large pulley 2, a drive chain 6
A drive mechanism 16 for moving the motor is provided. The drive mechanism 16 is drivingly connected to the drive chain 6 and moves the drive chain 6 in the direction indicated by the arrow 18. One side of the drive chain 6 (the upper side in FIG. 1 and extends along the assembly start area 8 and the assembly area 10) and the other side of the drive chain 6 (the lower side in FIG. Between the running part extending along the area 12) and the line power supply line 20 and
22 are provided. One side of the power supply line 20 is a carriage 24 (FIG. 2) which is moved by one side of the drive chain 6
And is provided along the inside of the one-side traveling portion. The other side power supply line 22 is for supplying electricity to the carriage 24 moved by the other side traveling section of the drive chain 6, and is provided along the inside of the other side traveling section.

Referring also to FIG. 2, in a specific example, the drive line is provided directly on the floor of the factory. The power supply lines 20 and 22 are provided between the one-side traveling portion and the other-side traveling portion of the drive chain 6 and are attached to a support frame 26. The support frame 26 extends in a direction perpendicular to the paper surface of FIG. 2, and a power supply line 20 is provided on one surface (left surface in FIG. 2) of the bottom of the support frame 26, and the other power supply line is provided on the other surface of the bottom. A line 22 is provided. Support frame 26
At the upper end, mounting arms 28 (only one is shown in FIG. 2) are mounted at intervals in a direction perpendicular to the plane of FIG. One side of the mounting arm 28 extends to the left in FIG. 2 above the one-side traveling portion of the drive chain 6, and is provided at a substantially central portion in the longitudinal direction of the one end above the carriage 24 that moves along the moving path. An electric light 30 for illuminating is provided. The other end of the mounting arm 28 is connected to the drive chain 6.
The lamp 30 extends rightward in FIG. 2 above the other side traveling portion, and is also attached to a substantially central portion in the longitudinal direction of the other end.

In the specific example, the line-out power supply lines 32 and 34 are further provided outside the one-side traveling portion of the drive chain 6 and the one-side traveling portion.
Are arranged. Line-out power supply lines 32 and 34
Is provided for supplying electricity to the bogie 24 removed from the assembly line, and is arranged on the ceiling of the factory in a specific example, and extends substantially in parallel with a predetermined interval from the line power supply lines 20 and 22. ing.

The assembly line having such an arrangement has the following features. First, since the drive line is provided on the floor, the installation of the drive line is easy, the construction cost is low, and the intrusion of dust into the interior is smaller than in the past. Second,
Since the power supply lines 20 and 22 are also disposed close to and above the floor surface, the wires do not hang down as in the prior art, and workability is improved. Third, since the power supply lines 20 and 22 are provided inside the elongated loop-shaped drive line, the space occupied by the assembly line can be made relatively small, and the floor of the factory can be effectively used. . Further, as can be understood from FIG. 2, a drive line and power supply lines 20 and 22 are provided inside the movement path of the cart 24,
Because the work area of the worker exists outside the travel route,
Workability is good, and safety during work can be sufficiently ensured.

Driving Mechanism Next, the driving mechanism 16 will be described with reference to FIG. 3 together with FIG. Referring mainly to FIG. 3, small pulleys 42 and 44 are rotatably mounted on shafts 38 and 40 on a frame body 36 fixed to the floor of a factory. An electric motor 48 functioning as a driving means is mounted on a rectangular plate 46 mounted on the frame 36, and an output pulley 50 is mounted on an output shaft of the electric motor 48. A pair of support brackets 52 (only one is shown in FIG. 3) are fixed to the plate 46, and a rotating shaft 58 to which the driven pulley 54 and the drive pulley 56 are fixed is rotatably mounted on the support bracket 52. ing. Output pulley
The driven pulley 50 and the driven pulley 54 are drivingly connected via an endless V-belt 60. Also, a pair of frame portions of the frame body 36
A support block 66 is mounted between 62 and 64 movably in the left-right direction in FIG. 3, and a tension adjusting pulley 70 is rotatably mounted on the support block 66 via a shaft 68.
The head of the adjustment screw 74 is stopped at the connection frame 72 of the frame body 36, and the male screw of the adjustment screw 74 is connected to the connection frame 72.
And is screwed to the support block 66 through a hole. The drive chain 6 is wound as follows. That is, the other traveling portion extending rightward from the large pulley 4 in FIGS. 1 and 3 is wound around the small pulley 42 in a counterclockwise direction in FIG. 3 is wound clockwise in FIG. 3, then extends toward the tension adjusting pulley 70, is wound therearound in the clockwise direction in FIG. 3, further extends toward the small pulley 44, and , And then wound around the large pulley 2. With this configuration, when the electric motor 48 is energized, the output pulley 50 moves to the arrow 76 (third direction).
), The driven pulley 54 and the driving pulley 56 are also rotated in the direction indicated by the arrow 76 via the V-belt 60, and thus the chain 6 is moved in the direction indicated by the arrow 18. When the adjusting screw 74 is rotated in a predetermined direction (a direction opposite to the predetermined direction), the support block 66 is moved to an arrow 78 in FIG.
(Or 80) and thus the chain 6
Can be increased (or weakened).

The large pulleys 2 and 4 are located outside the large pulleys 2 and 4.
Safety plates 82 and 84 are provided for the carriage 24 moving along the periphery of the vehicle.

4 to 9, mainly with reference to FIGS. 4 and 6, the carriage 24 moved by the drive chain 6 will be described. The illustrated work carriage 24 has a rectangular carriage body 86.
Is provided. The carriage body 86 has a lower frame 90 composed of four relatively low side walls 88 (three side walls are shown in FIG. 6). At the front end of the lower frame 90, a protruding wall 92 protruding forward (to the lower right in FIG. 6) is provided. In FIG. 6, a later-described bumper member and components related thereto are omitted. In the specific example, caster mounting portions 94 (only one is shown in FIG. 6) projecting from both sides are further provided on both side portions of the lower frame 90, and the caster mounting portions 94 are spaced apart in the front-rear direction. And two casters 96 are mounted. Four casters arranged at the four corners of the bogie body 86
96 is a reversible caster that is rotatable around an axis extending in the vertical direction.
Has 98.

A rectangular lift 102 is mounted on the carriage body 86 via a lift mechanism 100 so as to be vertically movable. The illustrated lift mechanism 100 includes a pair of outer arms 104 and a pair of outer arms 104 that are disposed at intervals in a lateral direction (a direction perpendicular to the paper surface in FIG. 5 and a direction from the lower left to the upper right in FIG. 6).
(In FIG. 5 and FIG. 6, only one of them is shown).
The central portions in the axial direction of the pair of outer arms 104 and the pair of inner arms 106 are rotatably connected via a shaft member 108. The lower ends of the pair of outer arms 104 are pivotally connected to the front end of the bogie main body 86 (ie, the front end of the side wall 88) via pins 110, respectively, and the upper ends thereof are connected to an upper connecting shaft (FIG. (Not shown), and the upper connecting shaft is mounted on the rear portion of the lift 102 so as to be pivotable and movable in the front-rear direction. Further, the upper ends of the pair of inner arms 106 are each pivotally connected to the front end of the elevating platform 102 via pins 112, and the lower ends thereof are formed at the rear of the bogie main body 86 (that is, at the rear inner surface of the side wall 88). ) So as to be pivotable and movable in the front-rear direction. In a specific example, a lift 10 is provided between a pair of outer arms 104 and a pair of inner arms 106.
A hydraulic cylinder mechanism 114 for moving up and down 2 is interposed. A lower connecting plate 116 is fixed between the lower end portions of the pair of outer arms 104, and a hydraulic cylinder mechanism 1 is mounted on a bracket 118 provided on the lower connecting plate 116 via a pin.
Fourteen cylinder bodies 120 are rotatably connected. An intermediate connecting plate 122 is fixed to an intermediate portion of the pair of inner arms 106 (a portion slightly higher than the device portion of the shaft member 108), and a bracket (not shown) provided on the intermediate connecting plate 122 Output rod 1 of hydraulic cylinder mechanism 114
24 are rotatably connected. Lift mechanism 100 described above
For example, a well-known hydraulic table lift mechanism (for example, commercially available as a scissor lift mechanism from Nagoya Kiko Co., Ltd.) may be used. With this configuration, when the hydraulic cylinder mechanism 100 is extended, the distance between the upper ends of the pair of outer arms 104 and the upper ends of the pair of inner arms 106 increases (this increases the upper end of the pair of outer arms 104). The lower end of the unit and the pair of inner arms 106 are moved inward), and thus the lift 102 is raised with respect to the bogie main body 86. On the other hand, when the hydraulic cylinder mechanism 114 is contracted, the distance between the lower end portions of the pair of outer arms 104 and the upper end portions of the pair of inner arms 106 becomes smaller.
Upper ends of a pair of outer arms 104 and a pair of inner arms 106
The lower end of the carriage 102 is moved outward.) Thus, the lift 102 is lowered with respect to the carriage main body 86. The lift 102 is
As shown in FIG. 5, it is possible to freely move up and down between a lowermost position shown by a solid line and a highest position shown by a two-dot chain line, and can be positioned at any position between these two positions.

In a specific example, the following configuration is further provided in relation to the elevator 102. That is, the lift mechanism 100 is mounted on the lower frame 90 of the bogie main body 86 and is disposed between the caster mounting portions 94. The elevating table 102 is also arranged between the caster mounting sections 94. Therefore, even if the hydraulic cylinder mechanism 114 is contracted to lower the elevator 102, the elevator 102 does not come into contact with the caster mounting portion 94, and the lowest position of the elevator 102 is lowered (that is, the floor surface is lowered). ).

A work table 126 is provided on the upper surface of the lift 102. The work table 126 has a rectangular shape, is slightly larger than the elevating table 102, and is eccentrically disposed downward in FIG. The work table 126 is mounted on the lift 102 as shown in FIGS. 7 to 9. That is, a rectangular upper plate 128 is fixed to the upper surface of the elevating table 102, and a support shaft 130 is fixed to the center of the upper plate 128 by means such as welding. Support shaft 130 is upper plate 1
It extends substantially vertically upward from 28, and its tip is somewhat smaller in diameter than the other parts. Meanwhile, work table 126
A rectangular lower plate 132 is fixed to the lower surface, and a cylindrical member 138 is fixed to the lower plate 132 by bolts 134 and 136.
And a support plate 140 are mounted. The cylindrical member 138 is rotatably supported by the small diameter portion of the support shaft 130 via the bearing member 142. In a specific example, a support roller 144 is interposed between the work table 126 so that the work table 126 can be smoothly rotated with respect to the lift 102. Six L-shaped brackets 146 are fixed on the upper plate 128 of the elevating table 102 at intervals of substantially 60 degrees, and support rollers 144 are rotatably mounted on the upright portions of the brackets 146, respectively. . These support rollers 144 act on the lower surface of the lower plate 132 of the work table 126 to support the work table 126 as required. In a specific example, the work table 126 is set to 90
A positioning mechanism is provided for positioning at a position rotated by degrees. The illustrated positioning mechanism includes a roller 148 and a positioning member 150 that defines a recess for removably receiving the roller 148. Upper plate 12 of the elevator 102
A bracket 152 is attached to a predetermined portion of the bracket 8, and an arm 154 is rotatably mounted on the bracket 152. A roller 148 is rotatably mounted on a distal end of the arm 154. On the other hand, the lower plate 132 of the work table 126 is substantially
Four brackets 156 are attached at equal intervals of 90 degrees, and a positioning member 150 is attached to each of these brackets 156.
Is fixed. Accordingly, when the roller 148 is received in any of the four recesses of the four positioning members 150, the work table 126 is positioned at a position rotated at intervals of 90 degrees (for example, the position shown in FIG. 7 as one position). Preferably, a bias spring 158 for biasing the roller 148 toward the positioning member 150 is provided between the arm 154 and the bracket 152. Working table 126 thus mounted
As shown in FIG. 8, for example, a frame body 160 of a copying machine is mounted on the upper surface of the copier as required.

In the trolley 2 described above, an operation unit denoted by reference numeral 162 is attached to the front end of the elevating platform 102, and an operation panel 164 is provided on the upper surface of the operation unit 162. The operation panel 164 includes an up switch 166, a stop switch 168, a down switch 170, a main switch 172 that also serves as a frequency switch,
A voltage switch 174 and an electrical outlet 176 are provided. The lift switch 166 is for raising the lift 102, the stop switch 168 is for stopping the lift of the lift 102, and the lower switch 170 is for lowering the lift 102. . The main switch 172 is an electric outlet 17 provided on the work table 126.
8 (in the specific example, two electric outlets 178 are provided, one of which is supplied with 200 V-system current, and the other is supplied with 100 V-system current) , For switching the frequency of the current supplied to these outlets 178. This main switch 172
Stops the supply of current when in the neutral position,
The operation position supplies a current of 60 Hz, and the second operation position supplies a current of 50 Hz. Voltage switch 17
4 is for switching the voltage supplied to the electrical outlet 178, in a specific example 100V, 110V, 120V, 200V, 220V
And 240 V can be selected from the six outlets (note that the 100 V, 110 V, and 120 V currents are supplied to the one outlet 178, and the 200 V, 220 V, and 240 V currents are supplied to the other outlet 178. ). Furthermore, the electric outlet 176 is a power outlet for jigs and the like used during an assembling operation or an adjusting operation, and is supplied with a current of, for example, 100 V. The outlet 178 is shown in FIGS.
As shown in the figure, it is preferable that the outlet 178 is provided on the side surface of the work table 126. With this configuration, the outlet 178 does not protrude beyond the upper surface of the work table 126, thereby improving workability. The outlet 178 has a work table 126 at the time of adjustment work or the like.
An electric cord (not shown) of the upper frame body 160 (close to a completed copying machine in which various parts are assembled) is electrically connected.

In the specific example, further, the front side surface (the sixth
A pair of terminal screws 180 are provided on the lower right side in the figure). For example, the work table 126
One end of an electric cord of the above copying machine (one in which an electric connection terminal is not provided and an electric wire is barely exposed at one end of the cord) is electrically connected. As shown in FIG. 6, the terminal screw 180 is preferably provided in a recess formed in a part of the work table 126 so that the tip does not protrude from the front side.

The bogie body 86 is further provided with current collecting means 182 (FIG. 4) that is electrically connected to the power supply lines 20 and 22. The electrical connection between the power supply lines 20 and 22 and the current collecting means 182 will be described later. Referring to FIG. 4, current collecting means 182
Is supplied to the connection terminal 184 via an electric cord (partially shown in FIG. 4). The other connection terminal 186 that is releasably connected to the connection terminal 184 is for supplying a current to the operation unit 162 and the like provided on the lift 102,
When the two connection terminals 184 and 186 are electrically connected as shown, the current from the power supply line 20 (or 22) is applied to the operation unit.
162 etc. In the specific example shown in the drawing, the connection terminals 184 and 186 are interposed between the current collecting means 182 and the operation unit 162, but this is because the connection terminal 186 is separated from the connection terminal 184 when the carriage 24 is removed from the drive line. This is for disconnecting and electrically connecting to the line-out power supply line 32 (or 34) (FIG. 1). When the connection terminal 186 is electrically connected to the power supply line 32 (or 34), the connection terminal 184 is not electrically connected, so that the current from the bogie main body 86 flows to the current collecting means 182. Therefore, safety on the work side is ensured.

A power supply means 188 shown in FIG. 9 is provided between the lifting table 102 and the work table 126. That is, the terminal mounting member 190 is mounted on the upper plate 128 of the elevator 102,
Then, three power supply terminals 192 are mounted on the terminal mounting member 190 at intervals in the vertical direction. Further, an annular insulating member 196 is attached to a peripheral portion of the support plate 140 attached to the work table 126 by a mounting screw 194,
On the peripheral surface of the insulating member 196, three annular current collecting rails 198 are arranged at intervals in the vertical direction. Each power supply terminal 192 is electrically connected to the corresponding current collecting rail 198. In a specific example, for example, a 200 V system (200, 220 and 240
The current V) is supplied using the uppermost and middle power supply terminals 192, and the current 100V (100, 110 and 120V) is supplied using the middle and lowermost power supply terminals 192. The current supplied from the power supply terminal 192 is selected by operating a voltage changeover switch 174 (FIG. 6) provided on the operation panel 164, and the current flowing through the power supply terminal 192 and the current collecting rail 198 is determined by the operation. The electric power is supplied to the electric outlet 178 and the terminal screw 180 provided on the table 126.

In the work cart 24 having such a configuration, the work table 12
To raise 6, the raising switch 166 may be pressed. Thus, the hydraulic motor (not shown) is energized and the switching valve (not shown) is switched from the neutral position to the first operating position, and the hydraulic oil from the hydraulic motor is supplied to the cylinder side of the hydraulic cylinder mechanism 114. (Expansion side) and the pressure oil on the rod side (contraction side) is returned to an oil reservoir (not shown), and the hydraulic cylinder mechanism 114 is extended. When extended, the pair of inner arms 106 is pivoted counterclockwise in FIG.
104 is rotated clockwise in FIG. 5), whereby the work table 126 is lifted as required integrally with the lift 102 by the action of the lift mechanism 100.

The stop switch 168 may be pressed to stop the work table 126 from rising. As a result, the hydraulic motor (not shown) is deenergized, the supply of the pressure oil is stopped, and the switching valve (not shown) is set to the neutral position, and the hydraulic cylinder mechanism 114 and the cylinder side and the rod side are hydraulically driven. The communication between the motor and the oil sump is cut off, and thus the hydraulic cylinder mechanism 11
4 is held in an extended state, and the work table 126 is held at the raised position.

On the other hand, to lower the work table 126, the lowering switch 170 may be pressed. Note that, from the viewpoint of work safety, it is desirable that the work table 126 be lowered only when the down switch 170 is pressed, unlike when the work table is raised. When the down switch 170 is depressed, the switching valve (not shown) is brought to the second operating position, the cylinder side of the hydraulic cylinder mechanism 114 is communicated with the oil sump (not shown), and the hydraulic cylinder mechanism 114 is thus moved up and down. It is contracted by its own weight such as 102 and the work table 126. Upon contraction, the pair of inner arms 106 are pivoted clockwise in FIG. 5 (this causes the pair of outer arms 104 to pivot counterclockwise in FIG. 5), and thus the work table 126 is lifted by the lift mechanism 100. Elevator 102 by the action of
And descend as required. The work table 126
In order to stop the descent of the descent switch 170, the depression of the descent switch 170 may be released, and when the depression is released, the switching valve (not shown)
Is located in the neutral position.

The cart 24 described above has the following features. That is,
An operation unit 162 provided with various operation switches 166, 168, 170, 172 and 174 (in addition to these, an electric outlet 176) is provided on the elevating table 102. Therefore, when the work table 126 is moved up and down, it is integrated therewith. The operation unit 162 is also moved up and down. Therefore, when the work table 126 is raised to facilitate the operation, the operation unit 162 is also raised, and thus various switches 166 and the like of the operation unit 162 can be easily operated during the operation. Further, since the operation unit 162 is provided on the lift 102, even when the work table 126 is rotated in the direction shown by the arrow 200 or 202 during the assembly work or the like, the work table 126 is moved to the lift 102 and the operation unit 162. However, the operability of the various switches 166 and the like does not deteriorate.

In a specific example, as shown in FIG. 4 and FIG. 7, the work table 126 is a bogie main body 86 (in other words, the lifting platform 102).
4 and 7, it is arranged somewhat eccentric downward, ie towards the outside of the assembly line. 4th
As can be seen from the figure, the worker is positioned at the lower side of the cart 24 in FIG.
(Fig. 8) to perform work such as assembly and adjustment.
Therefore, by arranging the work table 126 in this way, the workability can be further improved.

Drive chain and bogie drive connection mode The drive chain 6 and bogie 24 are releasably connected as follows.

Referring again to FIG. 4, the drive chain 6 is
Moved along 4. 12, 14 and 15, the illustrated guide means 204 includes a base plate 206 fixed to the floor of the factory and a pair of guide members 208 fixed to the upper surface of base plate 206. And 210. Guide member
208 and 210 are chain guides 212 and 214 extending substantially vertically upward from the upper surface of the base plate 206, and roller guides 216 and 2 provided at the upper ends of the chain guides 212 and 214.
A guide groove having an open upper surface is defined between the two.

The drive chain 6 is located between and moves along the pair of guide members 208 and 210. Referring to FIGS. 10 and 11 together with FIG. 14, the illustrated drive chain 6 includes a pair of inner link plates 220 and a pair of outer link plates 222.
Are connected alternately. The pair of inner link plates 220 and the pair of outer link plates 222 adjacent to each other are pivotally connected via pins 224, and the pin 224 is fitted between the pair of inner link plates 220 to form a roller 226. Is rotatably mounted. Further, a plurality of specific pairs of outer link plates 22 are provided.
2 (for example, outer link plates at intervals of five) are provided with engaging claws 228 and support rollers 230. That is, on one side located above the pair of outer link plates 222,
An engaging claw 228 projecting upward is fixed by means such as welding. The drive chain 6 is indicated by an arrow 18 (FIG. 1, FIG. 10).
(FIG. 11), and an arc-shaped concave portion 232 is formed on the front surface of the engaging claw 228 in the moving direction when viewed in the moving direction (FIG. 11). The concave portion 232 corresponds to the peripheral surface shape of the connecting pin described later, and
It acts to push in the direction shown by. On the other side located below the pair of outer link plates 222, a mounting block piece 234 protruding downward is fixed by means such as welding, and a support roller 230 is attached to the mounting block piece 234 via a pin 236. It is mounted rotatably. In such a drive chain 6, as shown in FIG.
When the roller moves between the guide members 208 and 210, the rollers 226
Are guided by the inner surfaces of the chain guides 212 and 214, and the support rollers 230 are moved in contact with the upper surface of the base plate 206.

The cart 24 and the drive chain 6 are drivingly connected as follows. Referring to FIGS. 12 to 14, in a specific example, a revolving body indicated by reference numeral 238 is provided at the front end of the bogie main body 86 of the bogie 24. The revolving superstructure 238 includes a pair of main body plates 240 and 242 arranged at intervals in the vertical direction, and an arm 244 arranged between the pair of main body plates 240 and 242. A block (not shown) is fixed between one end of the pair of body plates 240 and 242. On the other hand, the bogie body
A mounting bracket 246 is fixed to the left front end (upper right end in FIGS. 4 and 12) of the 86, and is attached to the mounting bracket 246 in the width direction (the vertical direction in FIGS. 4 and 12 and the paper surface in FIG. 13). A pair of bracket pieces 248 are provided at an interval in the vertical direction (the left-right direction in FIG. 14), and a main body plate piece is provided between the bracket pieces 248 via a shaft member 250.
A block piece (not shown) provided between 240 and 242 is rotatably mounted. The arm 244 is pivotally connected to a longitudinally intermediate portion of the pair of main body plates 240 and 242 via a pin 252 extending in the vertical direction. This arm 244, as clearly shown in FIG.
Horizontal base 254, horizontal base 25 extending substantially horizontally from 40 and 242
4 has a vertical intermediate portion 256 extending substantially vertically upward from one end and a horizontal tip portion 258 extending substantially horizontally from the upper end of the vertical intermediate portion 256.The horizontal tip portion 258 includes a bolt 260 and a nut 262, Guided rollers 264 and connecting pins 266 are mounted. The guided roller 264 is rotatably mounted on the lower surface of the horizontal tip 258 via a spacer 268, and has a connecting pin 266.
Are disposed below the guided rollers 264 and protrude downward. The guided roller 264 is a roller guiding portion of the guiding means 204.
Roller guides 216 and 218 are provided corresponding to 216 and 218.
It is guided to the inside of and moves. The connecting pin 266 is
It is engageable with a plurality of engagement claws 228 provided on the drive chain 6, and is driven and connected to the drive chain 6 by releasably engaging with any of these engagement claws 228.

Buffer means 270 and 272 are arranged on the front side and the rear side of the arm 244. In a specific example, a rectangular protruding piece 274 is integrally provided at an intermediate portion of the arm 244, one buffer means 270 is provided on the front side of the protruding piece 274, and the other buffer means 272 is provided on the rear side. Are arranged. The buffer means 270 is constituted by a cylinder-type shock absorber known per se, and is mounted on a mounting plate 276 mounted between the other end portions of the pair of main body plates 240 and 242. This buffer means 270 is moved by an arrow 278 (12 th
When the impact in the direction shown in FIG. 9 acts on the arm 244, it acts on the protruding piece 274 to buffer the impact. Further, the other buffering means 72 is formed of a rubber member that can be formed of, for example, synthetic rubber, and is attached to an attachment member 280 attached to the upper surface of one end of the main body plate 242. The shock absorbing means 72 acts on the above-mentioned projecting piece 274 when the impact in the direction shown by the arrow 282 (FIG. 12) acts on the arm 244 to cushion the impact. A hanging piece 284 hanging downward is fixed to a vertical intermediate portion 256 of the arm 244, and a roller 288 is rotatably attached to a lower end of the hanging piece 284 via a short shaft 286.

The revolving structure 238 described above is moved in the width direction (that is,
Shaft member extending in a direction substantially perpendicular to the guide groove of 04)
It is possible to pivot around 250 between the connecting position shown in FIGS. 4, 12, and 14 (also the position shown by the solid line in FIG. 13) and the release position shown by the two-dot chain line in FIG. . In the above-mentioned connection position, the connection pin 266 provided on the arm 244 of the revolving body 238 is located in the guide groove of the guide means 204 and protrudes into the movement path of the engaging claw 228 of the drive chain 6 to move the drive chain 6. As a result, the engagement claw 228 and the connection pin 266 are releasably engaged. In this connection position, the guided roller 264 is positioned between the roller guide portions 216 and 218 in the guide means 204. On the other hand, when the revolving structure 238 is moved to the release position, the guided roller 264 and the connecting pin 266 move upward, and the connecting pin 266 retreats from the movement path of the engaging claw 228 of the drive chain 6 and engages with the connecting pin 266. The engagement of the dowel 228 is released. At this time, the guided roller 264 is located between the roller guide portions 216 and 218 without completely disengaging from the guide groove of the guide means 204, and the carriage 24 does not move off the drive line. In a specific example, the revolving body 238 can be further pivoted to the detached position (not shown) by the upper piece indicated by the arrow 290 (FIG. 13) beyond the release position. In this detached position, both the guided roller 264 and the connecting pin 266 provided on the revolving body 238 are detached from the guide groove of the guide means 204.

In a specific example, a connection position holding means 292 for holding the rotating body 238 at the connection position is provided. Referring mainly to FIG. 13, the illustrated connecting position holding means 292 is shown.
Has a first holding means 294 provided on the outside and a second holding means 296 provided on the inside. A support plate 298 is attached to the front end of the bogie main body 86, and a mounting block piece 300 is fixed to the support plate 298. The first holding means 294 and the second holding means 296 are attached to the mounting block piece 300. Have been. The first holding means 294 has a screw shaft 302 screwed to the mounting block piece 300 so as to be adjustable in height. A locking nut 304 is screwed to the screw shaft 302, and the tip of the screw shaft 302 is covered. A coil spring 306 is interposed between the fitting nut 304 and the main body plate 240 of the rotating body 238.
Therefore, by changing the position of the lock nut 304,
The biasing force of the coil spring 306 acting on the rotating body 238 can be adjusted. The nut 308 is for fixing.
The second holding means 296 has a screw shaft 310 screwed to the mounting block piece 300 so that the height can be adjusted, and a rubber member 312 formed of, for example, synthetic rubber at the tip of the screw shaft 310. Is provided. Note that the nut 314 is also for fixing. These first holding means 294 (particularly the coil spring 3
06) and the second holding means 296 (particularly the rubber member 312) act on the lower surface of the revolving body 238, and as can be understood from FIG. 13, the first holding means 294 mainly functions as a buffer, and The second holding means 296 mainly functions for positioning for holding the revolving body 238 at the connection position. Also, as will be easily understood, when the revolving body 238 pivots downward toward the connecting position and abuts on the first holding means 294 and the second holding means 296, the impact due to such abutting is caused by the coil spring. It is buffered by 306 and rubber member 312.

In a specific example, a guided unit 316 is also provided at the rear end of the bogie main body 86 so that the bogie 24 is reliably moved along the guide groove of the guiding unit 204. Referring to FIG. 15 together with FIG. 4, the illustrated guided means 316 has a first member 318 attached to the rear end of the bogie main body 86 and a pin 320 connected to a tip end of the first member 318. And a second member 322 mounted to be pivotable about an axis extending in the front-rear direction. A plate piece 324 is fixed to the lower surface of the distal end of the first member 318, and the plate piece 324 extends to the base of the second member 322. A substantially triangular contact piece 326 is fixed to the upper surface of the base of the second member 322. Further, the distal end of the second member 322 is provided with a bolt 328 and a nut 330 by a spacer.
A guided roller 334 is rotatably mounted via 332. With this configuration, the second member 322 is
When it is turned clockwise as shown by the solid line in FIG. 15, its base comes into contact with the upper surface of the plate piece 324, and thus the second member 322 is held in the above-mentioned operating position. In this working position, the second member 322 is
The member 318 extends substantially horizontally following the member 318, and the guided roller 334 provided at the distal end thereof is a roller guiding portion 216 of the guiding means 204.
And 218 (at this time, the guided roller 334 is located above the engaging claw 228 provided on the drive chain 6 and does not engage with the engaging claw 228). On the other hand, when the second member 322 is turned counterclockwise as indicated by an arrow 338 to a detached position indicated by a two-dot chain line in FIG.
Abuts against the upper surface of the second member 318, and thus the second member 322 is held at the detached position. In such a disengaged position,
The second member 322 extends inclining inward, and the guided roller 334 provided at the tip thereof is separated from the guide groove of the guide means 204. Since the guided means 316 is provided at the rear end of the bogie main body 86 (particularly, at the rear end on the side opposite to the lower side in FIG. 4 where the worker is located), the work is performed. It is not easy for a person to turn the second member 322 directly to position the second member 322 in the operation position or the disengagement position. Therefore, it is desirable that the second member 322 be brought to the above-mentioned operation position or the above-mentioned separation position by using a bar-shaped tool having a bent front end portion, that is, a dedicated tool for line-out.

Power supply style of power supply line and trolley The power supply style of the power supply line 20 (or 22) and the trolley 24 will be described.

Referring to FIGS. 16 and 17 together with FIG. 4, the power supply line 20 (or 22) extends along the drive line in the horizontal direction in FIG. 4 (the vertical direction in FIG. 16 and the paper surface in FIG. 17). (A vertical direction). The power supply rail 340 includes an elongated support rail 342, and a recess 344 extending in the longitudinal direction is formed on the right surface of the support rail 342 in FIG. In a concave portion 344 of the support rail 342, an insulating member 346 that can be formed from, for example, a synthetic resin is provided. In the right side in FIG. 17 of the insulating member 346, four grooves are provided at intervals in the vertical direction.
348a, 348b, 348c, and 348d are formed and these grooves 348 are formed.
a, 348b, 348c and 348d each have a terminal rail 350a,
350b, 350c and 350d are provided. These terminal rails 350a, 350b, 350c and 350d are exposed on the right side of the power supply rail 340 in FIG. 17, and extend linearly in the longitudinal direction. The power supply rail 340 can be installed slightly above the guide means 204, for example, at a height of about 20 to 50 cm from the floor.

The power supply rail 340 is covered by a cover member 352. The illustrated cover member 352 has a U-shaped cross section,
It has a cover body 354, an upper cover 356, and a lower cover 358. The cover body 354 is disposed on the left side of the power supply rail 340 in FIG.
It is mounted on the inner surface of the device with bolts and nuts. The upper cover 356 is disposed somewhat above the power supply rail 340, and extends substantially horizontally to the right in FIG. 17 from the upper end of the cover body 354. The lower cover 358 is disposed below the power supply rail 340, and extends substantially horizontally to the right in FIG. 17 from the lower end of the cover body 354. The lower cover 358 also functions as a support member, as described later. As shown in FIG. 17, the cover member 352 covers the upper, left, and lower sides of the power supply rail 340, and the terminal rails 350a, 350b, 350c, and 350d are exposed to the outside through the open right surface of the cover member 352. I have. In the specific example, the grooves 348a and 348b
The terminal rails 350a and 350b provided for the terminal are for a frequency of 60 Hz, and the voltage from the terminal rails 350a and 350b is
A current of 200 V is supplied, and the terminal rails 350c and 350d provided in the grooves 348c and 348d are for a frequency of 50 Hz, and a current of 200V is supplied from the terminal rails 350c and 350d.

The current collecting means 182 provided on the cart 24 includes a main arm 360. The main arm 360 is an upper portion of the bogie main body 86 in FIG. 4 (specifically, a portion between the arm 244 and the guided means 318).
Arm 362 connected to the first arm 362 and the first arm 362
A second arm 370 is connected to the front end of the second arm 370 via a pin 364 (constituting a pivot axis extending in the vertical direction) so as to be pivotable in the front-rear direction indicated by arrows 366 and 368 (FIG. 16). . In a specific example, a support plate piece 372 projecting toward the base of the second arm 370 is fixed to the lower surface of the distal end of the first arm 362, and three through holes 374 are formed in the support plate piece 372. Have been. One of the through holes 374 is for connection, the other one is for locking the operation position, and the other one is for locking the storage position. On both side surfaces of the distal end of the first arm 362, connecting pieces 376 projecting from both sides are fixed, and a hole is formed at the left end of the connecting piece 376 in FIG. Further, the second arm 370
A connecting piece 378 protruding from both sides is fixed to both side surfaces of the base portion, and a hole is also formed at the right end of the connecting piece 378 in FIG. The pin 364 is mounted through a hole of one connecting piece 376 of the first arm 362, a hole of one connecting piece 378 of the second arm 370, and a connecting through hole 374 of the support plate piece 372. With this configuration, the second arm 37
When 0 is pivoted forward as indicated by an arrow 368 to bring it to the operation position indicated by the solid line in FIG. 16, the hole of the other connecting piece 376 of the first arm 362 and the other connecting piece 378 of the second-arm 370 are obtained. Hole and support hole 374
The second arm 370 is releasably locked in the above-mentioned working position by removably mounting the locking pin 380 through these holes. In such an operative position, the second arm 370 extends substantially horizontally toward the power supply rail 340. On the other hand, when the second arm 370 is moved to the storage position shown by the two-dot chain line in FIG. 16 behind the arrow 366, the hole of the other connecting piece 378 of the second arm 370 and the storage of the support plate piece 372 are stored. The position locking through-holes 374 are vertically aligned, and thus the second arm 370 is placed in the storage position by detachably mounting the locking pin 380 (using a locking pin that locks in the operating position) through these holes. Locked to release position. In this storage position, the second arm 370 extends rearward along one side of the bogie main body 86.

At the tip of the main arm 360, that is, at the tip of the second arm 370, a plurality of sets (four sets in the specific example, four sets are shown in FIG. 16 and only one set is shown in FIG. 16) are arranged. Has been established. A plurality of sets of current collecting arms 382 and 384 are disposed at intervals in the vertical direction corresponding to the terminal rails 350a, 350b, 350c and 350d on the power supply rail 340, and One end is pivotally mounted on an arm mounting member 386 fixed to the upper surface of the distal end of the second arm 370 in a direction approaching and separating from the power supply rail 340 via a pin. Current collecting terminals 388 are rotatably mounted on the other ends of the current collecting arms 382 and 384 via pins. The current collecting terminal 388 has a terminal supporting portion 390 formed of an insulating material and a terminal portion 392 attached to the terminal supporting portion 390. The terminal supporting portion 390 is connected to the current collecting arms 382 and 384. In a specific example, as shown in FIG. 16, the current collecting arms 382 and 384 and the terminal support 390 constitute a parallel link mechanism,
Accordingly, the terminal portion 392 is moved in a direction substantially perpendicular to the feed rail 340 and in a direction to approach and separate from the feed rail 340. In the specific example, a coil spring 394 (FIG. 16) constituting biasing means is interposed between a pin connecting the other end of the current collecting arm 382 and a pin connecting one end of the current collecting arm 384. I have. The coil spring 394 is connected to the collecting arms 382 and 38.
4 is displaced in the clockwise direction in FIG. 16, so that the terminal portions 392 correspond to the corresponding terminal rails 350a (350b, 350c or 350b).
It is elastically pressed substantially vertically to d).

A roller 396 is further provided at the distal end of the second arm 370 (FIG. 17). In a specific example, the second arm 370
A hanging piece 398 is provided at the tip of the
Roller 396 is rotatably mounted via 400. As shown in FIG. 17, the roller 396 serves as a lower cover 358 which also functions as a support member when the second arm 370 is in the operating position.
Move while being supported by the upper surface of the device, that is, the support surface. In addition,
As shown in FIG. 17, an inclined portion 358a that is inclined downward to the right is provided on the right side of the lower cover 358 in FIG. The inclined portion 358a functions to guide the roller 396 to the upper surface (that is, the support surface) of the horizontal portion of the lower cover 358.

Referring mainly to FIG. 17, the following operation may be performed to electrically connect current collecting means 182 and power supply rail 340 by connecting trolley 24 removed from the assembly line to the line. .

First, the carriage 24 is moved in the direction approaching the power supply rail 340, that is, upward in FIG. In order to facilitate such positioning, it is preferable that a positioning piece (not shown) that comes into contact with a part of the guide means 204 be provided on the bogie main body 86 when it is moved to the predetermined positional relationship.

Next, the second arm 370 is pivoted forward as indicated by the arrow 368 to position it in the operation position indicated by the solid line in FIG. 16, and the current collecting means 182 is electrically connected to the power supply rail 340. Driving connection to the drive chain 6 (this driving connection is performed by positioning the connection pin 266 in the guide groove of the guide means 204 and drivingly connecting the drive chain 6 to the drive chain 6;
334 is located in the guide groove). When the second arm 370 is positioned in the above-described operation position, the hole of the other connecting piece 376 of the first arm 362, the hole of the other connecting piece 378 of the second arm 370, and the support plate piece 372
The operation position locking through holes 374 are aligned as required, and the second arm 370 is locked in the operation position by mounting the locking pin 380 through these holes. When the second arm 370 is brought to the operating position, as shown in FIG. 17, the terminal portion 392 of the uppermost current collecting terminal 388 is electrically connected to the terminal rail 350a of the power supply rail 340, and Terminal portion 392 of the current collecting terminal 388 of the power supply rail 340
And the terminal portion 392 of the third (or lowest) current collecting terminal 388 from the top is electrically connected to the terminal rail 350c (or 350d) of the power supply rail 340. In this connection state, each of the coil springs 394 connects the corresponding current collecting terminal 388 to the terminal rail.
Since the terminal portions 392 of each current collecting terminal 388 are biased in a direction approaching 350a to 350d, the corresponding terminal rails 350a to 350d
It is elastically pressed against 0d and is electrically connected securely. In this connection state, the roller 396 mounted on the second arm 370 is supported on the upper surface of the horizontal portion of the lower cover 358, that is, on the support surface, thereby supporting the second arm 370. Is reliably prevented from being bent downward.

In a specific example, the following configuration is used to prevent erroneous connection between the current collector 182 and the power supply rail 340. That is, as understood from FIG. 17, the gap between the upper cover 356 and the upper end of the insulating member 346 is set small, and the uppermost current collecting terminal 388 does not enter the gap between the upper cover 356 and the insulating member 346. In the specific example, when the uppermost current collecting terminal 388 tries to enter the gap, the terminal portion 392 of the current collecting terminal 388 comes into contact with the upper cover 356, whereby the erroneous connection is reliably prevented. You. In addition, the power collection means 182 for the power supply rail 340
Relative downward movement is reliably prevented by the contact of the roller 396 with the upper surface of the lower cover 358, whereby the lowest current collecting terminal 388 is connected to the lowest terminal rail 350d of the power supply rail 340. Therefore, the connection between the power supply rail 340 and the current collecting means 182 is reliably prevented. Regarding the connection between the power supply rail 340 and the current collecting means 182, the following points are noted. That is, when the second arm 370 moves forward toward the action position indicated by the arrow 368, the distal end of the second arm 370 is displaced somewhat downward due to its own weight of the arm mounting member 386, the current collecting terminal 388, and the like. As a result, the roller 396 provided on the second arm 370 is
And is guided by the upper surface of the inclined portion 358a and is positioned on the support surface of the lower cover 358. Thereafter, the power supply rail 340 and the current collecting means 182 are electrically connected. . Therefore, before the current collector 182 is connected to the power supply rail 340, the roller 396 is positioned on the support surface of the lower cover 358. , So that the power collection means 182 and the power supply rail 340 can be securely connected as required. When electrically connected, the power supply rail 340
Is supplied to the bogie main body 86 via the current collecting means 182.

After the connection, the drive chain 6 moving in the direction indicated by the arrow 18 acts on the connecting pin 266 provided on the carriage 24, and the carriage 24 is electrically connected with the power supply rail 340 and the current collecting means 182. It is moved in the direction indicated by arrow 18. When the roller 396 moves, the roller 396 moves while rotating while being supported by the support surface of the lower cover 358.
The second arm 370 does not bend downward during the movement of. In addition, even if vibration occurs in the carriage 24 during such movement, the second arm 370 is reliably prevented from bending downward by the action of the roller 396.

To release the electrical connection between the power supply rail 340 and the current collecting means 182, the locking pin 380 is removed and the second arm 370 is moved to the arrow 36.
It may be turned in the direction indicated by 6 and positioned at the storage position indicated by the two-dot chain line in FIG. When positioned at the storage position, the hole of one connecting piece 378 of the second arm 370 and the storage position locking through hole 374 of the support plate piece 372 are aligned as required, and the locking pin 380 is inserted through these holes. Thereby, the second arm 370 can be locked at the storage position.

In the specific example shown, the second arm 370 is mounted so as to be pivotable in the front-rear direction about an axis extending in the vertical direction, but instead of this, the second arm 370 is attached to the first arm 362. The first arm 3 is slidable in the axial direction and
The first arm 362 can be mounted so as to be storable, and can be freely moved between a storage position stored in the first arm 362 and an operation position pulled out from the first arm 362. Instead of this configuration, the second arm 370 is connected to the first arm 362 so as to be vertically pivotable about an axis extending in the front-rear direction, and between the operation position extending substantially horizontally and the bogie 24. It can be configured to be movable between the inclined storage positions.
Also in these cases, it is desirable to provide an appropriate locking means for releasably locking the second arm 370 to the operating position and the storage position, as in the specific example.

<Effects of the Invention> In the present invention, a drive line for moving the carriage and a power supply line for supplying electricity to the carriage are provided on the floor along the movement path. Therefore,
The installation of the drive line becomes easier and the construction cost is reduced as compared with the related art in which the groove is provided in the floor. Also, the intrusion of dust into the inside of the drive line is reduced as compared with the related art.

In the present invention, the drive line is also an elongated loop, and between the one-side traveling portion and the other-side traveling portion of the drive line, a power supply line for the carriage moved by the one-side traveling portion and the other-side traveling portion. Since the power supply line for the truck to be moved is provided, the space occupied by the assembly line can be made relatively small, so that the floor of the factory can be effectively used.

Each of the power supply lines includes a power supply rail, and the power supply rail includes an insulating member and a plurality of terminal rails disposed on the insulating member at intervals in the vertical direction. In addition, the construction is simple without wires, installation is easy and construction costs are reduced, and the workability is improved without the wires hanging down as in the prior art.

In addition, since the working area exists outside the one-side running section and the other-side running section, workability is good and safety during work can be sufficiently secured.

Further, each of the current collecting terminals included in the current collecting means of the trolley,
When the second arm of the bogie is positioned in the operating position, it is configured to be electrically connected to the corresponding terminal rail of the power supply rail, so that the power supply line supplies the bogie with power. It does not require a large wiring such as a cable, and is extremely easily performed, so that the entire configuration is simplified.

Furthermore, the truck is provided with a power collection means, an operation unit, and a plurality of electric outlets, and the operation unit includes a main switch for both frequency switching and a voltage switching switch, and each of the current collection terminals Each of the electrical outlets
Since it is configured to be electrically connected via the main switch and the voltage switch, it is possible to select and supply a plurality of different types of voltages and frequencies of current from the power supply line to the bogie as necessary. Is significantly easier,
Therefore, workability is significantly improved.

[Brief description of the drawings]

FIG. 1 is a plan view schematically showing a specific example of an assembly line according to the present invention. FIG. 2 is a cross-sectional view schematically showing a portion viewed from line II-II in FIG. FIG. 3 is a plan view showing a product carry-out area and its vicinity in the assembly line of FIG. FIG. 4 is a plan view showing a part of the assembly line of FIG. FIG. 5 is a side view showing an example of a truck used in the assembly line of FIG. FIG. 6 is a perspective view showing the carriage of FIG. FIG. 7 is a plan view showing a main part of the cart in FIG. 5; FIG. 8 is a side view showing a connecting portion between a lifting table and a work table in the bogie of FIG. FIG. 9 is a cross-sectional view showing a connecting portion between the lift table and the work table in a cross section. FIG. 10 is an enlarged front view showing a part of the drive chain in the assembly line of FIG. 4; FIG. 11 is an enlarged plan view showing a part of the drive chain in FIG. 10; FIG. 12 is a plan view showing a connecting portion between a drive chain and a bogie in the assembly line of FIG. FIG. 13 is a sectional view taken along line XIII-XIII in FIG. FIG. 14 is a side view of a connecting portion between the drive chain and the bogie shown in FIG. FIG. 15 is a cross-sectional view showing the guided means provided on the truck of FIG. 4 and the vicinity thereof. FIG. 16 is a plan view showing a part of the electrical connection between the power supply line and the bogie, partially cut away. FIG. 17 is a cross-sectional view showing an electric connection portion in FIG. 16 in a cross section. 6 Drive chain 8 Assembly start area 10 Assembly area 12 Adjustment area 14 Product unloading areas 20 and 22 Power supply line 24 Dolly

Continuation of the front page (72) Inventor Joji Tanaka 1-2-2, Tamazuki, Higashi-ku, Osaka-shi, Osaka Inside Mita Kogyo Co., Ltd. Co., Ltd. (56) References JP-A-51-121896 (JP, A)

Claims (1)

(57) [Claims] An assembly line for moving an assembling trolley along a predetermined moving path and assembling products during the movement of the trolley, and a drive line for moving the trolley and supplying electricity to the trolley. The drive line is provided on the floor along the movement path, the drive line is an elongated loop, and the one-side running part is provided between the one-side running part and the other-side running part of the drive line. A power supply line for the carriage moved by the vehicle and a power supply line for the carriage moved by the other side traveling part are provided, and a work area is provided outside the one side traveling part and the other side traveling part. Wherein each of the power supply lines includes a power supply rail, the power supply rail includes an insulating member, and a plurality of terminal rails disposed on the insulating member at intervals in the vertical direction. Is a power collection means, an operation unit, A number of electrical outlets are provided, the current collecting means includes a first arm connected to the truck, an operating position extending toward the power supply rail with respect to the first arm, and one side of the truck. A second arm movably mounted between a storage position extending along the first arm and a current collecting terminal mounted on a distal end portion of the second arm, wherein the current collecting terminal is connected to the terminal rail. The operation unit includes a main switch for both frequency switching and a voltage switching switch, and each of the current collecting terminals and each of the electric outlets Are electrically connected via the main switch and the voltage changeover switch, and each of the current collecting terminals is electrically connected to the corresponding terminal rail when the second arm is positioned in the working position. Assembly line, which is electrically connected Down.