JP2018047763A - Assembly line of vehicles - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an assembly line of vehicles capable of enhancing work efficiency associated with attaching components to a lower part of the vehicle.SOLUTION: An assembly line of vehicles comprises: a movable base; a rotary part disposed on an upper surface of the base, and having a circular shape in a plan view; and support parts disposed on the rotary part and contacting with a lower part of the vehicle to support the vehicle. The base includes a rotary mechanism rotating the rotary part about a center axis extending in a direction orthogonal to the upper surface of the rotary part. The support parts are arranged separated in a diameter direction on the upper surface of the rotary part, in a pair. Each of the support parts comprises: a support post part fixed on the rotary part; a beam part arranged at an upper end of the support post part and extending horizontally; and receiving parts each disposed at each end parts of the beam part. The support parts support the vehicle with the beams aligned in a vehicle longitudinal direction. An assembly line comprises: a first work area where work is performed to the vehicle aligned in a line proceeding direction; and a second work area where components assembly work is performed to the vehicle, the longitudinal direction of which is aligned in a direction orthogonal to the line proceeding direction, configured so by turning the rotary part from the rotary part position in the first work area.SELECTED DRAWING: Figure 2

Description

  The present disclosure relates to a vehicle assembly line, and more particularly to a vehicle underbody assembly line.

  Conventionally, various techniques related to a vehicle assembly line when manufacturing a vehicle such as an automobile are known.

  For example, Patent Document 1 discloses a vehicle assembly line that includes a plurality of transfer devices that move a vehicle body along an assembly line while moving the floor surface while the vehicle body is supported. Each of the plurality of transfer devices includes a support portion that supports the vehicle body in a posture in which the front-rear direction of the vehicle body is orthogonal to the transfer direction of the vehicle body, and a base that fixes the support portion to the upper surface. The support part has an upstream support part and a downstream support part arranged symmetrically on the base with a center line extending in a direction orthogonal to the transport direction as a center.

  In the space below the vehicle body supported by the conveyance device, there is formed a conveyance passage for conveying the tool used when assembling the suspension parts to the vehicle body in communication along the conveyance direction. Yes. In addition, a parts space for arranging the suspension parts is formed below the vehicle body supported by the transportation device, independently of the transportation path.

  By doing in this way, the component mounting trolley | bogie can be arrange | positioned between the upstream support part and the downstream support part of the downward direction of a vehicle body. Further, a conveyance path is formed below the front part of the vehicle body and below the rear part of the vehicle body, and this conveyance path can be used as a tool conveyance space for mounting components. For this reason, the wagon which mounted tools etc. and the cart which mounted mounting parts can be arranged under the body. Therefore, when assembling the parts to the vehicle body, it is possible to suppress an increase in the moving distance when picking up the parts, and it is possible to improve work efficiency.

Japanese Patent No. 4752929

  Since the conventional vehicle assembly line described in Patent Document 1 supports the vehicle body in a state in which the vehicle body is oriented in a direction substantially orthogonal to the line traveling direction, the front and rear sides of the vehicle body are separated from the assembly line. It is in a protruding state. For this reason, arrangement | positioning of raising / lowering apparatuses, such as a mounting lifter, is possible on the floor surface adjacent to an assembly line. Using this lifting device, large parts such as the front and rear suspensions, the engine & transmission, etc. can be easily carried in and placed on the front and rear sides of the vehicle body.

  However, this conventional vehicle assembly line is narrow because the width between the columns of the upstream support portion and the downstream support portion that support the vehicle body is about the same as the vehicle width. For this reason, large parts such as underfloor piping, fuel tanks, and mufflers are carried into the lower part of the vehicle body from the front-rear direction of the vehicle body through the space between the upstream support part and the downstream support part below the vehicle body. troublesome. Therefore, the efficiency of the work of assembling the parts to the lower part of the vehicle body may be reduced.

  At least one embodiment of the present invention is an invention based on such a state of the art, and the object is to improve the efficiency of assembling parts to the lower part of the vehicle body. An object of the present invention is to provide a vehicle assembly line that can be used.

  (1) An assembly line of a vehicle according to at least one embodiment of the present invention includes a plurality of conveyance devices that convey the vehicle body along the assembly line in a state where the vehicle body is supported, and the vehicle assembly line supported by the conveyance device. An assembly line of a vehicle for assembling parts in a lower part, wherein the transport device includes a base that is movable in a transport direction, a turntable provided on an upper surface of the base, and a top that is attached to the turntable And a support portion that supports the vehicle body by contacting the lower portion of the vehicle body, and the rotary table is formed in a circular shape in plan view and extends in a direction perpendicular to the upper surface of the rotary table The base is provided so as to be rotatable about a central axis, the base is provided with a turning mechanism for turning the turntable, and the support portions are separated from each other in the diameter direction of the upper surface of the turntable. Provided and fixed to the top surface of the turntable A column portion extending upward, a beam portion attached to the upper end portion of the column portion and extending horizontally on both sides of the column portion, and provided at both ends of the beam portion in the extending direction. A receiving portion for abutting and supporting, wherein the support portion supports the vehicle body in a state in which the extending direction of the beam portion is along the front-rear direction of the vehicle body, and the assembly line has the front-rear direction of the vehicle body A first work area in which parts are assembled in a state along the line traveling direction of the assembly line, and the front-rear direction of the vehicle body can be adjusted by rotating the turntable from the position of the turntable in the first work area. And a second work area in which the part assembling work is performed in a state of facing the direction crossing the line traveling direction.

  According to the vehicle assembly line described in (1) above, the support portion supports the vehicle body in a state where the extending direction of the beam portion is along the front-rear direction of the vehicle body. For this reason, in the first work area, the vehicle body is supported by the support portion in a state where the longitudinal direction of the vehicle body is along the line traveling direction of the assembly line. Spaces are formed on the front and rear sides in the vehicle longitudinal direction with respect to the support column. For this reason, when a parts shelf is installed on one side of the assembly line in the line traveling direction, when the transfer device moves to the first work area, the parts taken out from the parts shelf are moved to the front and rear sides of the column in the front-rear direction of the vehicle body. Via the space formed on the side, it can be easily carried into the front side or the rear side of the vehicle body and assembled.

  In addition, since the transport device is provided with the turntable and the rotation mechanism unit, the front-rear direction of the vehicle body can be in a state in which the direction intersects the line traveling direction. For this reason, in the second work area, the longitudinal direction of the vehicle body faces the direction intersecting the line traveling direction, so that the respective end portions in the longitudinal direction of the vehicle body are orthogonal to the traveling direction of the assembly line. It can be in the state of projecting outward in the direction to be. Therefore, when a lifting device such as a mounting lifter is arranged on the floor surface adjacent to the assembly line, the lifting device, for example, allows parts such as front and rear suspensions, engines and transmissions to be placed on the front and rear sides of the vehicle body. Easy to carry in and assemble.

  Therefore, it is possible to realize a vehicle assembly line capable of improving the efficiency of assembling parts to the lower part of the vehicle body.

  (2) In some embodiments, in the vehicle assembly line described in (1) above, the beam portions of the pair of support portions are arranged in parallel in a plan view, and the pair of support portions Each column portion is configured to be fixed on the turntable in a state in which the column portion faces a direction inclined with respect to the extending direction of the beam portion provided on the column portion in plan view.

  According to the embodiment described in (2) above, the support column is fixed on the turntable in a state in which the support unit faces a direction inclined with respect to the extending direction of the beam unit provided in the support column in plan view. . For this reason, when an external force having at least one of the components in the vehicle body longitudinal direction and the vehicle body width direction is applied to the support column in plan view, the external force can be received without significant deformation of the support column. Therefore, the vehicle body can be supported stably.

  (3) In some embodiments, in the vehicle assembly line described in (2) above, one of the pair of support portions is between a pair of receiving portions provided on the one support portion. Is configured to be smaller than the distance between the pair of receiving portions provided on the other support portion.

  According to the embodiment described in (3) above, one support portion of the pair of support portions has the distance between the pair of receiving portions provided on the one support portion provided on the other support portion. It is smaller than the distance between the pair of receiving parts. For this reason, the area | region of the space below the vehicle body of each line advancing direction of one support part can be made larger than the area | region of the space corresponding to the other support part.

  (4) In some embodiments, in the vehicle assembly line according to the above (3), in the first work area, the side where the one support portion is disposed on both sides of the assembly line. Parts are brought in from the side.

  According to the embodiment described in the above (4), in the first work area, the parts are carried in from the side where one support portion is provided on both sides of the assembly line. This space area can be made larger than the corresponding space area of the other support portion, and the vehicle components can be easily transported to the space area below the vehicle body.

  (5) In some embodiments, in the vehicle assembly line described in (3) or (4) above, the front side portion of the vehicle body is abutted among a pair of receiving portions provided on the one support portion. The receiving part to be supported is arranged such that the distance between the supporting part and the supporting part in a plan view is larger than the distance between the receiving part that supports the rear part of the vehicle body and the supporting part.

  In a vehicle body in which an engine room is formed on the front side of the vehicle body, when the engine is mounted on the vehicle body, the weight of the front side of the vehicle body becomes heavier than that of the rear side. For this reason, in order to stably support the front side of the vehicle body, it is necessary to bring the position of the receiving portion that contacts and supports the front side portion of the vehicle body closer to the position of the center of gravity on the front side of the vehicle body. Therefore, according to the embodiment described in the above (5), the receiving portion that abuts and supports the front portion of the vehicle body is in contact with and supports the rear portion of the vehicle body in the plan view. By making the distance larger than the distance between the receiving part and the support part, it is possible to suppress an increase in the moment acting on the receiving part that supports the front side of the vehicle body, and to stably support the front side of the vehicle body.

  (6) In some embodiments, in the vehicle assembly line according to any one of (1) to (5) above, the parts assembled to the lower portion of the vehicle body in the first work area include an insulator, It is a suspension part including at least one of braces and cables.

  According to the embodiment described in (6) above, the part assembled to the lower part of the vehicle body in the first work area is an undercarriage part including at least one of an insulator, a brace, and a cable. In the first work area, the vehicle body is supported by the support portion in a state where the vehicle body front-rear direction is along the line traveling direction of the assembly line. A space is formed. For this reason, the suspension part including at least one of the insulator, the brace, and the cable can be assembled to the lower part of the vehicle body via these spaces.

  (7) In some embodiments, in the vehicle assembly line according to any one of (1) to (6) above, the part assembled to the lower part of the vehicle body in the second work area is a front drive unit. Or it is a rear drive unit.

  According to the embodiment described in (7) above, the part assembled to the lower part of the vehicle body in the second work area is the front drive unit or the rear drive unit. In the second work area, since the front-rear direction of the vehicle body faces the direction intersecting the line traveling direction, each end of the front-rear direction of the vehicle body is in a direction orthogonal to the assembly line traveling direction. It can be in a state of protruding outward. Therefore, since a lifting device such as a mounting lifter can be arranged on the floor surface adjacent to the assembly line, the front drive unit or the rear drive unit can be easily carried and assembled to the front side and the rear side of the vehicle body by this lifting device. it can.

  (8) In some embodiments, in the vehicle assembly line according to any one of (1) to (7), the assembly line is configured such that the assembly line extends from one end side to the other end side in the line extending direction. A first assembly line that moves the transfer device; and a second assembly line that is arranged in parallel with the first assembly line and moves the transfer device from the other end side in the line extending direction of the first assembly line toward the one end side. A line connecting portion that connects the downstream end of the first assembly line and the upstream end of the second assembly line and is capable of moving the transfer device from the first assembly line to the second assembly line; The first assembly line has a first work area on the upstream side and a second work area on the downstream side, and the second assembly line has a second work area on the upstream side and downstream The first work area is provided on the side and the front The line connecting portion is configured to be able to move the transfer device while maintaining the orientation of the base and the vehicle body of the transfer device in the second work area of the first assembly line. When the base moves between the first work area and the second work area of the first assembly line, the turning mechanism portion causes the front-rear direction of the vehicle body to intersect the line traveling direction. When the turntable is rotated and the base moves between the second work area and the first work area of the second assembly line, the front and rear direction of the vehicle body follows the line traveling direction by the turning mechanism. The turntable is configured to rotate so as to be in a different direction.

  According to the embodiment described in (8) above, the first assembly line and the second assembly line are connected via the line connection part, and the line connection part is connected to the vehicle body in the second work area of the first assembly line. The conveying device can be moved while maintaining the orientation. For this reason, the vehicle body supported by the support unit of the transport device is transported from the second work area of the first assembly line to the second work area of the second assembly line while maintaining the same orientation. Therefore, when installing an elevating device that can raise and lower parts on the right side of each of the first assembly line and the second assembly line, heavy components can be easily carried into the front and rear sides of the vehicle by the elevating device. Can be arranged. In addition, since the line connection part is a line connecting the first assembly line and the second assembly line, the first assembly line and the second assembly line are arranged adjacent to each other, so that the path of the line connection part is shortened. can do. Accordingly, it is possible to shorten the path between the second work areas of the first assembly line and the second assembly line.

  According to at least some embodiments of the present invention, it is possible to provide a vehicle assembly line capable of improving the efficiency of assembling parts to the lower part of the vehicle body.

1 is an overall plan view of a vehicle assembly line according to an embodiment of the present invention. It is a perspective view of a conveying apparatus. It is a side view of the conveying apparatus which supports a vehicle body. It is a front view of the conveying apparatus which supports a vehicle body. The rotation mechanism part provided in the conveyance apparatus is shown, The figure (a) is a top view of a rotation mechanism part, The figure (b) is a side view of a rotation mechanism part, c) is a front view of the rotation mechanism. It is a top view of the support part which supports a vehicle body. It is explanatory drawing in planar view of the conveying apparatus which moved to the 1st work area. It is a perspective view of the conveying apparatus for demonstrating the assembly | attachment operation | work of the large sized component with respect to the vehicle body which moved to the 2nd operation area.

  Embodiments of an assembly line for a vehicle according to the present invention will be described below with reference to FIGS. However, the dimensions, material properties, shapes, relative arrangements, and the like of the components described in the embodiments or shown in the drawings are not intended to limit the scope of the present invention, but are merely illustrative examples. Only. For example, expressions expressing relative or absolute arrangements such as “in a certain direction”, “along a certain direction”, “parallel”, “orthogonal”, “center”, “concentric” or “coaxial” are strictly In addition to such an arrangement, it is also possible to represent a state of relative displacement with an angle or a distance such that tolerance or the same function can be obtained. For example, an expression indicating that things such as “identical”, “equal”, and “homogeneous” are in an equal state not only represents an exactly equal state, but also has a tolerance or a difference that can provide the same function. It also represents the existing state. For example, expressions representing shapes such as quadrangular shapes and cylindrical shapes represent not only geometrically strict shapes such as quadrangular shapes and cylindrical shapes, but also irregularities and chamfers as long as the same effects can be obtained. A shape including a part or the like is also expressed. On the other hand, the expressions “comprising”, “comprising”, “comprising”, “including”, or “having” one constituent element are not exclusive expressions for excluding the existence of the other constituent elements. In the following description, the same components may be denoted by the same reference numerals and detailed description thereof may be omitted.

  FIG. 1 is an overall plan view of a vehicle assembly line according to an embodiment of the present invention. FIG. 2 is a perspective view of the transport device. FIG. 3 is a side view of the transport device that supports the vehicle body. FIG. 4 is a front view of the transport device that supports the vehicle body. 5A and 5B show a rotation mechanism portion provided in the transport device. FIG. 5A is a plan view of the rotation mechanism portion, and FIG. 5B is a side view of the rotation mechanism portion. FIG. 10C is a front view of the rotation mechanism unit. In the present embodiment, a vehicle assembly line for assembling components to the lower part of the vehicle body will be described.

  As shown in FIGS. 1, 2, and 3, the vehicle assembly line 1 according to an embodiment of the present invention transports the vehicle body 3 along the assembly lines 10 and 10 ′ while supporting the vehicle body 3. A vehicle assembly line 1 including a plurality of devices 20 and assembling parts to the lower part of a vehicle body 3 supported by the transport device 20, the transport device 20 being along a rail R disposed on the floor surface Fs. A movable base 50, a turntable 61 provided on a part of the upper surface 50 a of the base 50, and mounted on the turntable 61, extend upward and contact the lower portion of the vehicle body 3 to support the vehicle body 3. The turntable 61 is formed in a circular shape in plan view, and is provided to be rotatable about a central axis extending in a direction orthogonal to the upper surface 61a of the turntable 61. The table 50 is provided with a rotation mechanism 60 that rotates the rotation table 61. A pair of support portions 40 are provided at both ends in the diameter direction of the upper surface 61 a of the turntable 61, and are attached to the upper end portion of the support post portion 41 and the support post portion 41 that is fixed to the upper surface 61 a of the turntable 61 and extends upward. The beam portion 45 extending on both sides in the horizontal direction with the column portion 41 as the center, and receiving portions 43 provided at both ends in the extending direction of the beam portion 45 to support the vehicle body 3 are provided. The vehicle body 3 is supported in a state in which the extending direction of the beam portion 45 is along the front-rear direction of the vehicle body 3, and the assembly line 1 can be assembled in a state where the front-rear direction of the vehicle body 3 is along the line traveling direction of the assembly line 1. The rotation mechanism 60 includes a first work area A1 to be performed, and a second work area A2 in which the parts assembly work is performed in a state where the front-rear direction of the vehicle body 3 faces the direction intersecting the line traveling direction. Are the first work area A1 and the second work area. Configured to rotate the turntable 61 so that the orientation of the vehicle body 3 in accordance with the A2 region of the respective.

  In the illustrated embodiment, there are two assembly lines 1, and these assembly lines 10, 10 ′ are arranged side by side. Of the two assembly lines 10 and 10 ', the upstream assembly line 10 is provided with a first work area A1 on the upstream side in the line traveling direction, and a second work area A2 on the downstream side of the first work area A1. Is provided. Further, on the upstream side of the first work area A1, a vehicle carry-in area Ai for carrying the vehicle body 3 into the assembly line 10 and rotating the direction is provided.

  Of the two assembly lines 10 and 10 ', the downstream assembly line 10' is provided with the second work area A2 on the upstream side in the line traveling direction and the first work area A1 on the downstream side. Yes. Furthermore, a vehicle unloading area Ao for changing the direction of the vehicle body 3 and unloading the vehicle body 3 from the assembly line 10 ′ is provided on the downstream side of the first work area A1.

  In the illustrated embodiment, each of the assembly lines 10, 10 ′ has two rails R arranged side by side on the floor surface Fs, and a transport for transferring the transport device 20 to these rails R. A number of follower rods 70 (see FIG. 3) are rotatably provided. Further, on the side portions of these rails R, a transport driving unit (not shown) that contacts the side portion of the base 50 of the transport device 20 and transports the transport device 20 in the transport direction is disposed.

  In the illustrated embodiment, the base 50 is provided with a hole 50b at the center of the upper surface 50a, as shown in FIG. A turntable 61 is provided in the hole 50b. The turntable 61 is supported so as to be rotatable about a central axis extending in a direction orthogonal to the turntable 61. The upper surface 61 a of the turntable 61 is disposed on substantially the same plane as the upper surface 50 a of the base 50. As shown in FIGS. 5A, 5B, and 5C, the rotation mechanism unit 60 includes a rotation drive unit 63 provided on the lower surface 61b of the turntable 61 and a rotation of the turntable 61. And a rotation restricting portion 65 that locks the movement.

  The rotation drive unit 63 includes a worm wheel 63a provided on the lower surface 61b of the turntable 61, a worm gear 63b that meshes with the worm wheel 63a, and an electric motor 63c that rotates the worm gear 63b. The rotation center of the worm wheel 63 a is arranged coaxially with the rotation center O of the turntable 61. The worm gear 63b is fixed to the rotating shaft 63c1 of the electric motor 63c. The electric motor 63c is a rotation area for rotating the vehicle body 3 in the assembly lines 10, 10 ′, that is, an area A4 between the second work area A2 and the first work area A1 of the upstream assembly line 10. Arranged in the area A4 between the second work area A2 and the first work area A1 of the downstream assembly line 10 ′, the vehicle carry-in area Ai, and the vehicle carry-out area Ao.

  The electric motor 63c moves between a separation position where the worm gear 63b is separated from the worm wheel 63a when the transport device 20 moves to a region where the vehicle body 3 is rotated, and a meshing position where the worm gear 63b meshes with the worm wheel 63a. It is configured to be possible. In this way, by arranging the electric motor 63c only in the region where the transport device 20 rotates the vehicle body 3, compared with the case where the electric motor 63c is provided for each transport device 20, the cost can be reduced and the electric motor 63c can be reduced. It is possible to simplify the routing of the connected wiring.

  The rotation restricting portion 65 is capable of moving a plurality of protrusions 66 protruding from the lower surface 61 b of the turntable 61 and a locking protrusion 67 that can be engaged with an engagement hole 66 a formed in the protrusion 66. And a drive cylinder 68 to be supported. The protrusions 66 are provided on the lower surface 61 b of the turntable 61 at equal intervals in the circumferential direction. In the illustrated embodiment, three protrusions 66 are provided with an angle of 90 ° in the circumferential direction. When the drive cylinder 68 extends and the locking projection 67 engages with the engagement hole 66a, the rotation of the turntable 61 can be restricted. The drive source of the drive cylinder 68 may be either air or hydraulic pressure.

  In the illustrated embodiment, as shown in FIG. 6, the beam portions 45 of the pair of support portions 40 are arranged in parallel in a plan view, and the column portions 41 of the pair of support portions 40 are viewed in a plan view. In FIG. 4, the beam unit 45 is fixed on the upper surface 61a of the turntable 61 in a state in which the beam unit 45 is inclined with respect to the extending direction of the beam unit 45. In the present embodiment, the support column 41 is fixed on the turntable 61. A pair of support | pillar parts 41 are mutually opposingly arranged toward the rotation center O side of the turntable 61. As shown in FIG. In the present embodiment, the support column 41 is inclined with an angle θ of about 20 degrees with respect to the beam unit 45.

  Thus, the support column 41 is fixed to the upper surface 61a of the turntable 61 in a state in which the support column 41 faces a direction inclined with respect to the extending direction of the beam unit 45 provided on the support column 41 in plan view. For this reason, when an external force having at least one component in the vehicle body longitudinal direction and the vehicle body width direction is applied to the support column 41 in a plan view, the external force can be received without the support column 41 being greatly deformed by the external force. . Therefore, the vehicle body 3 can be stably supported.

  FIG. 6 is a plan view of the support portion 40 that supports the vehicle body 3. FIG. 7 is an explanatory diagram in a plan view of the transfer device 20 that has moved to the first work area A1. FIG. 8 is a perspective view of the transport device 20 for explaining the work of assembling a large part to the vehicle body 3 moved to the second work area A2.

  In this way, when the transport device 20 moves to the first work area A1, as shown in FIGS. 3 and 6, when the transport device 20 is viewed from a direction orthogonal to the line traveling direction, the pair of support portions 40 As shown in FIG. 7, spaces Af and Ar are formed on the front and rear sides of the vehicle body in the longitudinal direction. For this reason, when the parts shelf 73 is installed on one side in the transport direction of the assembly line 1, when the transport device 20 moves to the first work area A1, the parts taken out from the parts shelf 73 are transferred to the vehicle body of the support unit 40. It can be easily carried in and placed on the front side or the rear side of the vehicle body via the spaces Af and Ar formed on the front side and the rear side in the front-rear direction.

  Further, as shown in FIG. 2 and FIG. 5A, the transport device 20 is provided with a rotation mechanism portion 60, so that the front-rear direction of the vehicle body 3 is changed to the line traveling direction by the rotation mechanism portion 60. On the other hand, it can be in a state of facing the crossing direction (in the illustrated embodiment, an orthogonal direction). For this reason, as shown in FIGS. 1 and 8, in the second work area A2, the front-rear direction of the vehicle body 3 faces the direction intersecting the line traveling direction. It is possible to make the end of the protrusion project outward in the width direction of the line. Therefore, when the lifting device 75 such as a mounting lifter is disposed on the floor surface Fs adjacent to the assembly line, any one of the engine, the transmission, the motor, the inverter, the drive shaft, the suspension, the transaxle, and the like is arranged by the lifting device 75. Large parts such as a front drive unit combined with the rear drive unit combined with any of the engine, transmission, motor, inverter, drive shaft, suspension, transaxle, etc. are easily carried in and placed on the front and rear sides of the vehicle body can do. In the illustrated embodiment, a state in which the rear suspension 76 is carried into the rear side of the vehicle body 3 by the lifting device 75 is shown.

  Therefore, it is possible to realize a vehicle assembly line capable of improving the efficiency of assembling parts to the lower part of the vehicle body.

  Further, according to some embodiments, the assembly lines 10 and 10 ′ are, as shown in FIG. 1, a first assembly line 11 that moves the transport device 20 from one end side to the other end side in the line extending direction. The second assembly line 12 that is arranged in parallel with the first assembly line 11 and moves the conveying device 20 from the other end side in the line extending direction toward the one end side, the downstream end of the first assembly line 11 and the second assembly line 12 is provided with a line connecting portion 15 that can connect the upstream end of the transfer device 20 to the second assembly line 12 from the first assembly line 11, and the first assembly line 11 has a first work area on the upstream side. A1 is provided, the second work area A2 is provided on the downstream side, the second assembly line 12 is provided with the second work area A2 on the upstream side, and the first work area A1 is provided on the downstream side, Line connection 15 is the first assembly line 11 is configured to be able to move the transport device 20 while maintaining the orientation of the base 50 and the vehicle body 3 of the transport device 20 in the second work area A2, and the transport device 20 has the base 50 in the first assembly line. 11 is moved between the first work area A1 and the second work area A2, and the turntable 61 rotates the turntable 61 so that the front-rear direction of the vehicle body 3 is in a direction intersecting the line traveling direction. When the base 50 moves between the second work area A2 and the first work area A1 of the second assembly line 12, the rotation mechanism 60 causes the front-rear direction of the vehicle body 3 to follow the line traveling direction. It is comprised so that the turntable 61 may be rotated so that it may become.

  In the illustrated embodiment, in the first assembly line 11, a rotation region that changes the direction of the vehicle body 3 is provided between the first work region A1 and the second work region A2 and in a region upstream of the first work region A1. It has been. In the second assembly line 12, a rotation area is provided between the first work area A1 and the second work area A2 and in the area downstream of the first work area A1.

  The line connecting portion 15 connects the downstream end of the first assembly line 11 and the upstream end of the second assembly line 12, so that the transport device 20 can be assembled to the first assembly without changing the orientation of the base 50 and the vehicle body 3. It is configured to be movable from the line 11 to the second assembly line 12.

  As described above, the first assembly line 11 and the second assembly line 12 are connected via the line connection portion 15, and the line connection portion 15 indicates the direction of the vehicle body 3 in the second work area A <b> 2 of the first assembly line 11. The conveying device 20 is configured to be movable while being maintained. For this reason, the vehicle body 3 supported by the support unit 40 of the transport device 20 is maintained in the same direction, and the second work of the second assembly line 12 from the second work area A2 of the first assembly line 11 is maintained. It is conveyed to area A2. Therefore, when a lifting device 75 (see FIG. 8) capable of lifting and lowering heavy components is installed on the floor surface Fs on the right side in the transport direction of the first assembly line 11 and on the right side in the transport direction of the second assembly line 12, The heavy parts can be easily carried in and arranged on the front side and the rear side of 3. Further, since the line connecting portion 15 is a line connecting the first assembly line 11 and the second assembly line 12, when the first assembly line 11 and the second assembly line 12 are disposed adjacent to each other, the line connection portion 15 The path of the connection unit 15 can be shortened. Accordingly, it is possible to shorten the paths between the second work areas A2 of the first assembly line 11 and the second assembly line 12.

  Further, when the base 50 moves between the first work area A1 and the second work area A2 of the first assembly line 11, the front-rear direction of the vehicle body 3 intersects the line traveling direction by the rotation mechanism unit 60. When the turntable 61 is rotated so as to be in the direction and the base 50 is moved between the second work area A2 and the first work area A1 of the second assembly line 12, the turning mechanism portion 60 causes the vehicle body 3 to move. The turntable 61 is rotated so that the front-rear direction is a direction along the line traveling direction. For this reason, the direction of the vehicle body suitable for each of the first assembly line 11 and the second assembly line 12 can be easily switched.

Further, according to some embodiments, the support portion 40 includes a beam portion 45 that is connected to the upper end of the support column portion 41 and extends in the horizontal direction, as shown in FIGS. 2 and 6. Receiving portions 43a and 43b projecting upward at both ends in the extending direction are provided, and the beam portions 45 of the pair of support portions 40 extend in parallel with each other in a plan view, and the line of the pair of support portions 40 and 40 ′ One support portion 40 disposed on the right side in the traveling direction has a distance X _R between a pair of receiving portions 43a and 43b provided on one support portion 40 so that a pair of receiving portions provided on the other support portion 40 ′ has a distance XR. part 43a, and is configured to be smaller than the distance _{X L} between 43b.

In the illustrated embodiment, as shown in FIG. 6, the distance X _R between the pair of receiving portions 43 a and 43 b of one support portion 40 arranged on the right side in the line traveling direction among the pair of support portions 40 and 40 ′ is , a pair of receiving portions 43a provided on the other supporting portion 40 ', smaller than the distance _{X L} between 43b. For this reason, as shown in FIG. 7, the range of the spaces Af and Ar below the vehicle bodies 3 on the front side and the rear side in the line advancing direction with respect to the one support portion 40 is set to the space corresponding to the other support portion 40 ′. Can be larger. Therefore, large components can be easily transported from the one support portion 40 side to the spaces Af and Ar below the vehicle body front side and the vehicle body rear side.

Further, according to some embodiments, as shown in FIG. 6, the receiving portion 43 a that abuts and supports the front side portion of the vehicle body 3 among the pair of receiving portions 43 a and 43 b provided on the one support portion 40 is provided. , the distance Y _F between the strut 41 in a plan view is disposed so as to be larger than the distance Y _R of the receiving portion 43b and the support portion 41 which contacts and supports a rear portion of the vehicle body 3.

In the embodiment illustrated in FIG. 6, when the engine room is formed on the front side of the vehicle body 3, when the engine is mounted on the vehicle body 3, the weight of the front side of the vehicle body 3 becomes heavier than that of the rear side. For this reason, in order to stably support the front side of the vehicle body 3, it is necessary to bring the position of the receiving portion 43 a that abuts and supports the front portion of the vehicle body 3 close to the position of the center of gravity on the front side of the vehicle body 3. Therefore, the receiving portion 43a that abuts and supports the front portion of the vehicle body 3 has a distance Y _F between the receiving portion 43a and the support column 41 in plan view, and the receiving portion 43b and the support column that contact and support the rear portion of the vehicle body 3. to be larger than the distance Y _R of the section 41, it is possible to suppress an increase in moment that acts on the receiving portion 43a for supporting the front of the vehicle body 3, the front side of the vehicle body 3 can be stably supported.

A pair of receiving portions 43a 'of the other support portion 40 disposed in a line traveling direction left of the' pair of support portions 40, 40, the distance X _L between 43 b, a pair of which are provided on one of the support portions 40 receiving 43a, greater than the distance _{X R} between 43b.
Therefore, the receiving portion 43a on the front side of the other support portion 40 ′ is positioned in the front portion of the vehicle body 3 relative to the receiving portion 43a on the front side of the one support portion 40. For this reason, the position of the receiving portion 43a on the front side of the other support portion 40 ′ arranged on the left side in the line traveling direction is brought close to the position of the center of gravity on the front side of the vehicle body 3 to the receiving portion 43a after the engine is mounted. An increase in the acting moment can be effectively suppressed.

  Moreover, the support | pillar part 41 of support parts 40 and 40 'is standingly arranged by the turntable 61 in the state rotated only angle (theta) with respect to the line advancing direction, when the beam part 45 is located in a line advancing direction. When the column 41 is rotated by an angle θ, the distance between the column 41 and the front receiving portion 43a can be shortened compared to the case where the column 41 does not rotate, that is, θ is zero. Thus, the moment acting on the support column 41 can be reduced, and the increase in the moment acting on the receiving portion 43a that supports the front side of the vehicle body 3 can be suppressed.

  Moreover, according to some embodiment, the components assembled | attached to the lower part of the vehicle body 3 in 1st operation | work area | region A1 are small suspension parts, such as an insulator, a brace, and a cable.

  Thus, in the first work area A1, the vehicle body 3 is supported by the support portion 40 in a state in which the front-rear direction of the vehicle body 3 is along the line traveling direction of the assembly line 10, and therefore, from the support column portion 41 of the support portion 40. Also, spaces Af and Ar are formed on the front and rear sides of the vehicle body in the longitudinal direction. For this reason, a small underbody part can be assembled | attached to the lower part of the vehicle body 3 via these space Af and Ar.

  Further, according to some embodiments, the parts to be assembled to the lower part of the vehicle body 3 in the second work area A2 are fronts in which any of engine, transmission, motor, inverter, drive shaft, suspension, transaxle, etc. are combined. It is a large component such as a drive unit or a rear drive unit that combines any of an engine, a transmission, a motor, an inverter, a drive shaft, a suspension, a transaxle, and the like.

  In the second work area A2, since the front-rear direction of the vehicle body 3 faces the direction intersecting with the line traveling direction, the respective end portions in the front-rear direction of the vehicle body 3 are set to the traveling direction of the assembly line 10. It can be in the state of projecting outward in the orthogonal direction. Therefore, since a lifting device such as a mounting lifter can be disposed on the floor surface adjacent to the assembly line 10, any one of an engine, a transmission, a motor, an inverter, a drive shaft, a suspension, a transaxle, etc. can be placed by this lifting device. Large parts such as a combined front drive unit or a rear drive unit that combines any of the engine, transmission, motor, inverter, drive shaft, suspension, transaxle, etc. are easily carried in and placed on the front and rear sides of the vehicle body 3 can do.

  As mentioned above, although the preferable form of this invention was demonstrated, this invention is not limited to said form, A various change in the range which does not deviate from the objective of this invention is possible. For example, the upper surface 61 a of the turntable 61 may be disposed at an upper position or a lower position than the upper surface 50 a of the base 50.

DESCRIPTION OF SYMBOLS 1 Vehicle assembly line 3 Car body 10, 10 'assembly line 11 1st assembly line 12 2nd assembly line 15 Line connection part 20 Conveyance apparatus 40 Support part 41 Support | pillar part 43a, 43b Reception part 45 Beam part 50 Base 50a, 61a Upper surface 50b Hole portion 60 Rotating mechanism portion 61 Turntable 61b Lower surface 63 Rotation drive portion 63a Worm wheel 63b Worm gear 63c Electric motor 63c1 Rotating shaft 65 Rotation restricting portion 66 Protrusion portion 66a Engagement hole portion 67 Locking protrusion portion 68 Drive cylinder 70 Carrying follower 73 Parts shelf 75 Elevating device 76 Rear suspension A1 First work area A2 Second work area Ai Carry-in area Af, Ak space A3, A4 area Ao Carry-out area Fs Floor R Rail

Claims (8)

A vehicle assembly line comprising a plurality of conveying devices that convey the vehicle body along an assembly line in a state where the vehicle body is supported, and assembling parts to a lower portion of the vehicle body supported by the conveying device,
The transport device includes a base that is movable in the transport direction, a turntable provided on an upper surface of the base, and is attached to the turntable and extends upward to come into contact with a lower portion of the car body to move the car body. A support part for supporting,
The turntable is provided to be rotatable about a central axis that is formed in a circular shape in plan view and extends in a direction orthogonal to the upper surface of the turntable,
The base is provided with a rotation mechanism for rotating the turntable,
The support portions are provided in a pair spaced apart in the diameter direction on the upper surface of the turntable, and are attached to the upper end portion of the support portion and fixed to the upper surface of the turntable, and attached to the upper end portion of the support portion. A beam portion extending on both sides in the horizontal direction, and a receiving portion provided at both ends in the extending direction of the beam portion to contact and support the vehicle body,
The support portion supports the vehicle body in a state in which the extending direction of the beam portion is along the front-rear direction of the vehicle body,
The assembly line includes: a first work area where a part assembly operation is performed in a state where a longitudinal direction of a vehicle body is along a line traveling direction of the assembly line; and the position of the turntable in the first work area. And a second work area in which a part assembling work is performed in a state where the front-rear direction of the vehicle body is directed in a direction intersecting the line traveling direction by rotating the vehicle. The beam portions of the pair of support portions are arranged in parallel in a plan view,
Each of the support portions of the pair of support portions is fixed on the turntable in a state in which the support portion is oriented in a direction inclined with respect to the extending direction of the beam portion provided in the support portion in plan view. The vehicle assembly line according to claim 1. One support portion of the pair of support portions is such that the distance between the pair of receiving portions provided on the one support portion is smaller than the distance between the pair of receiving portions provided on the other support portion. It is comprised as follows. The assembly line of the vehicle of Claim 2 characterized by the above-mentioned. 4. The vehicle assembly line according to claim 3, wherein in the first work area, parts are carried in from both sides of the assembly line from the side where the one support portion is disposed. 5. . Of the pair of receiving portions provided on the one supporting portion, the receiving portion that contacts and supports the front portion of the vehicle body is in contact with and supports the rear portion of the vehicle body in a plan view. The vehicle assembly line according to claim 3 or 4, wherein the vehicle assembly line is disposed so as to be larger than a distance between the receiving portion and the support portion. The part assembled to the lower part of the vehicle body in the first work area is an undercarriage part including at least one of an insulator, a brace, and a cable. The vehicle assembly line described. The vehicle assembly line according to any one of claims 1 to 6, wherein the part assembled to the lower portion of the vehicle body in the second work area is a front drive unit or a rear drive unit. The assembly line is
A first assembly line for moving the conveying device from one end side to the other end side in the line extending direction;
A second assembly line that is arranged in parallel with the first assembly line and moves the transfer device from the other end side in the line extending direction of the first assembly line toward the one end side;
A line connecting portion that connects the downstream end of the first assembly line and the upstream end of the second assembly line and is capable of moving the transfer device from the first assembly line to the second assembly line;
The first assembly line is provided with a first work area on the upstream side and a second work area on the downstream side,
The second assembly line is provided with a second work area on the upstream side and a first work area on the downstream side,
The line connecting portion is configured to be able to move the transfer device while maintaining the orientation of the base and the vehicle body of the transfer device in the second work area of the first assembly line,
In the transport device, when the base moves between the first work area and the second work area of the first assembly line, the longitudinal direction of the vehicle body intersects the line traveling direction by the turning mechanism. Rotate the turntable so that it is in the direction,
When the base moves between the second work area and the first work area of the second assembly line, the turning mechanism portion causes the front-rear direction of the vehicle body to be in a direction along the line traveling direction. The vehicle assembly line according to any one of claims 1 to 7, wherein the turntable is configured to rotate.

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