WO2011049007A1 - ワーク昇降支持装置 - Google Patents

ワーク昇降支持装置 Download PDF

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Publication number
WO2011049007A1
WO2011049007A1 PCT/JP2010/068117 JP2010068117W WO2011049007A1 WO 2011049007 A1 WO2011049007 A1 WO 2011049007A1 JP 2010068117 W JP2010068117 W JP 2010068117W WO 2011049007 A1 WO2011049007 A1 WO 2011049007A1
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WO
WIPO (PCT)
Prior art keywords
link
folded
base
workpiece
work
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2010/068117
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English (en)
French (fr)
Japanese (ja)
Inventor
正浩 大江
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daifuku Co Ltd
Original Assignee
Daifuku Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Daifuku Co Ltd filed Critical Daifuku Co Ltd
Priority to BRPI1011252A priority Critical patent/BRPI1011252A2/pt
Publication of WO2011049007A1 publication Critical patent/WO2011049007A1/ja
Priority to US13/432,988 priority patent/US9004471B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
    • B66F7/08—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement hydraulically or pneumatically operated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D65/00—Designing, manufacturing, e.g. assembling, facilitating disassembly, or structurally modifying motor vehicles or trailers, not otherwise provided for
    • B62D65/02—Joining sub-units or components to, or positioning sub-units or components with respect to, body shell or other sub-units or components
    • B62D65/18—Transportation, conveyor or haulage systems specially adapted for motor vehicle or trailer assembly lines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
    • B66F7/0641—Single levers, e.g. parallel links

Definitions

  • the present invention relates to a workpiece lifting / lowering support device that can be used in a cart-type transfer device that transfers a vehicle body while changing its height for each section in an automobile assembly line.
  • a pantograph mechanism means for supporting the workpiece so as to be movable up and down in a space between the workpiece such as an automobile body and the carriage, that is, a pantograph mechanism may be provided.
  • a pantograph mechanism may be provided.
  • the maximum lift is low and it is difficult to use it as a work transfer device in the chassis line.
  • the work lifting / lowering support device is configured by a lift using a support, the support must be disposed outside the work, and the work space around the work to be supported is narrowed.
  • the workpiece lifting / lowering support device is configured by a lifter that can be vertically expanded and contracted, if the maximum lift is increased, the height of the workpiece lifting / lowering support device in the reduced state becomes relatively large, and the workpiece lifting / lowering support device is relatively large. If the entire apparatus is to be stored in the lower space of the work (automobile body), the work lifting support device must be projected below the traveling carriage, and a low floor traveling carriage cannot be used.
  • each of the middle-folded double link mechanisms (3A, 3B) includes an intermediate link member (9), the intermediate link member (9) And the lower parallel link (10) interposed between the base (8), the upper link member (11) connected to the work support (4A, 4B), and the intermediate link member ( 9) and an upper parallel link (12) interposed between the upper link member (11) and folded on the base (8) It is possible to move up and down between the folding and lying posture and the unfolded standing posture when the work support (4A, 4B) is vertically raised
  • each work support (4A, 4B) is provided with each half-folded double link mechanism (3A, 3B) in the unfolded standing posture. Projecting inward toward the side where the other side middle folded double link mechanism (3A, 3B) is located, and each middle folded double link mechanism (3A, 3B) is The middle folding double link mechanism (3A, 3B) can be configured to be folded inward toward a certain side.
  • the locking means (15) regulates the angle between the lower parallel link (10) and the upper parallel link (12) of the half-folded double link mechanism (3A, 3B) as described in claim 3.
  • the deployed upright posture of two parallel folding double link mechanisms held by the locking means (15) is such that the position of the intermediate link member (9) is outward as described in claim 4.
  • the intermediate bulging symmetrical shape can be used, and conversely, as described in the fifth aspect, the intermediate link member (9) can be formed in a symmetrical shape in which the position of the intermediate link member 9 protrudes inward.
  • each half-fold double link mechanism (3A, 3B) can be connected and integrated by the connecting member (28). Further, as described in claim 7, drive means (30) can be provided that causes each half-folded double link mechanism (3A, 3B) to move up and down between the folded and lying posture and the deployed standing posture. . Furthermore, as described in claim 8, each of the half-folded double link mechanisms (3A, 3B) is such that the lower parallel link (10) and the upper parallel link (12) are in the same horizontal plane when in the folded lying position. It can be configured to be located above.
  • the link mechanism (3A, 3B) is provided with a lifting body (34) that moves up and down between an intermediate deployed standing posture that is lower than the deployed standing posture and the folded lying posture, and this lifting body (34) is a cart (2)
  • the cam rails (35a, 35b) that are moved up and down as the vehicle travels can be laid on the cart travel path side.
  • a workpiece lifting / lowering support device is characterized in that at least two half-fold double link mechanisms (48A, 48B) arranged in parallel on a base (8), a workpiece support (4A, 4B), a work lifting / lowering support device provided with a lock means (51) and a work support base locking means (52), and each lower end double link mechanism (48A, 48B) has a lower end at the base ( 8)
  • the upper link (50) is configured to be folded vertically on the base (8) and when the folded support posture and the work support (4A, 4B) are vertically raised to a predetermined height.
  • the lock means (51) holds each half-folded double link mechanism (48A, 48B) in the deployed upright posture, and the workpiece support base Means (52) is configured to hold the expanded vertical position each medium in bending duplicate link mechanism (48A, 48B) said workpiece support relative to the (4A, 4B) in a horizontal posture.
  • a workpiece lifting / lowering support device comprising at least two half-fold double link mechanisms (48A, 48B) arranged in parallel on a base (8), a workpiece support ( 78), and a workpiece lifting and lowering support device provided with a lock means (15), each of the folded double link mechanisms (48A, 48B) is a lower side pivotally supported on the base (8)
  • the locking means (15) keeps each half-fold double link mechanism (48A, 48B) in the deployed standing posture. And it has a configuration that.
  • the work support base (4A, 4B, 78) is provided with each folded double link mechanism (48A, 48A, 48) in the deployed standing posture. 48B) projecting inward toward the other side of the mating double link mechanism (48A, 48B) on the other side, and each middle folding double link mechanism (48A, 48B) is
  • the folding means (15) can be configured to be folded inward toward a side of the middle folding double link mechanism (48A, 48B).
  • the cart (2) When the work lifting support device according to the second or third aspect of the present invention is installed and used on a cart (2) that travels on a fixed travel route, the cart (2) as described in claim 15.
  • the workpiece support (4A, 4B, 78) is connected to the intermediate height when the middle folding double link mechanism (48A, 48B) is in an intermediate deployment standing posture lower than the deployment standing posture, and the middle folding double linkage mechanism.
  • (48A, 48B) is provided with a lifting and lowering body (71) that moves up and down between the lowered position when in the folded lying position, and the lifting and lowering body (71) is moved up and down as the carriage (2) travels
  • the cam rails (76a, 76b) can be laid on the cart travel path side.
  • a pair of left and right workpiece support bases that are long in the front-rear direction and can support two front and rear sides of the left and right sides of the workpiece (W) at both ends, (4A, 4B) can be provided, and the intermediate position in the longitudinal direction of both work support bases (4A, 4B) can be folded and supported by the double link mechanism (3A, 3B, 48A, 48B). Then, as described in claim 17, four work support bases (79a to 79d) for supporting two front and rear sides of the left and right sides of the work (W) and each work support base (79a to 79d) are supported.
  • each half-fold double link mechanism (80a to 80d) is not parallel to each other in the plan view when the link length direction is in the folded-down position. It can arrange
  • a work such as an automobile body is placed on two work support bases that are supported by the two half-folding two-link mechanisms in the folded lying posture.
  • the two work support bases upper link members of the respective folded double link mechanisms
  • the two work support bases are integrally connected via the work. Therefore, the two work support bases (upper link members of each half-fold double link mechanism) are lifted vertically by a lifter, or each half-fold double link mechanism is driven by the drive means according to claim 7.
  • the work supported on the work support base can be vertically raised in parallel with the unfolding upright motion of the two middle-folding double link mechanisms.
  • the locking means When the workpiece has risen to a predetermined height, the locking means is operated to hold the two half-fold double link mechanisms in the deployed standing posture at a predetermined angle, so that the workpiece is held in this deployed standing posture.
  • the workpiece can be stably supported at a predetermined height by the two middle-folding double link mechanisms.
  • the workpiece is supported at the lowest position when each middle folded double link mechanism is in the folded lying position, and the workpiece is supported at the highest position when each middle folded double link mechanism is in the deployed standing posture. Therefore, the height of the workpiece to be supported can be switched between the lowest position and the highest position by switching each half-folded two-link mechanism between the folded lying posture and the unfolded standing posture.
  • the lower parallel link and the upper parallel link are configured to be deployed in a substantially vertical straight line.
  • the work support can be supported at a very high position with respect to the lowest position of the work support when the link mechanism is in the folded lying posture.
  • each half-folded double link mechanism developed in a substantially vertical straight line on the lower side of the work is merely upright, and a wide working space is provided on the lower side of the work. Can be secured.
  • each folding center link mechanism must be in the above-mentioned folded-down position, and the car body must be supported at a high enough level to allow the operator to enter under the car body.
  • a work section called a chassis line that must be operated, the vehicle body can be supported at a height suitable for each work section by switching each half-folded two-link mechanism to the deployed standing posture.
  • a large work space can be secured under the automobile body supported at the highest position, and workability is not deteriorated.
  • all the problems that occur when the work lifting support device is configured by a lift using a support or a lift using a vertically movable lifting body can be solved.
  • each half-fold double link mechanism that is in the folded and lying posture between the workpiece supported at the lowest position and the surface of the base (traveling carriage) is provided. Since it can be accommodated, it is possible to secure a wide working space around the work and to improve workability as compared with the case where the support means protrudes greatly outside the work.
  • maintaining each center folding double link mechanism in the said unfolding standing posture becomes simple, and can be implemented easily.
  • each of the folded double link mechanisms can be held in the deployed standing posture that stands in a straight line that is completely perpendicular to the base, according to the configuration of claim 4 or 5, It is possible to easily and stably hold each half-fold double link mechanism in the deployed standing posture, and to reduce the burden on the locking means.
  • work in the highest position increases, and the burden concerning the said locking means can also be reduced.
  • work in the lowest position can be made very low, and it is in the lowest position.
  • the height on the base of the workpiece to support can be made low enough.
  • Claim 9 or Claim 15 supports with each middle folding double link mechanism of the lowest position supported by each middle folding double link mechanism of the said folding lying posture, and each said expansion standing posture. It is possible to support the workpiece at an intermediate height position between the highest position and a special power source on the carriage side to raise and lower the workpiece between the intermediate height position and the lowest position. It is unnecessary and can be implemented easily and inexpensively.
  • work can be supported by a pair of left and right middle folding double link mechanisms.
  • the total four places are respectively supported by the center double folding link mechanism in two places before and after the left and right sides of the work, even if the work is a large heavy load Compared to the case where each half-folded double link mechanism can be safely and stably supported, and the link length directions when arranged in the folded and lying posture are parallel to each other. Therefore, it becomes strong against horizontal shaking, and stability and safety are improved.
  • the workpiece lifting / lowering support device is installed on a traveling carriage, even when the workpiece is supported and conveyed at the highest position, the workpiece can be safely conveyed while suppressing the shaking of the workpiece.
  • FIG. 3A is a front view showing a state in which the workpiece is supported at the lowest position
  • FIG. B is a front view showing a state in which the workpiece is supported at the highest position. It is a left view of FIG. 1B. It is a top view of the upper end part of the workpiece raising / lowering support apparatus of the state of FIG. 1B. It is a cross-sectional top view which shows the lower half part of the workpiece raising / lowering support apparatus of the state of FIG. 1B.
  • FIG. 3A is a rear view showing a half-fold double link mechanism on one side
  • FIG. Fig. A is an exploded front view showing a part of the components of the middle folded double link mechanism, Fig.
  • FIG. 1B is a front view showing an intermediate first stage from the state shown in FIG. 1A to the state shown in FIG. 1B. It is a front view which shows a middle 2nd step same as the above. It is a front view which shows an intermediate
  • FIG. 1B is a front view showing an intermediate first stage from the state shown in FIG. 1A to the state shown in FIG. 1B. It is a front view which shows a middle 2nd step same as the above. It is a front view which shows an intermediate
  • FIG. 1B is a front view showing an intermediate first stage from the state shown in FIG. 1
  • FIG. 9A is a diagram showing a third modification of the embodiment of the first invention, in which FIG.
  • the front view and B figure which show the state which were met are enlarged views of the principal part.
  • the 4th modification of the Example of 1st invention is shown, A figure is a front view which shows the state when a workpiece
  • the 5th modification of the Example of 1st invention is shown, A figure is a side view which shows the middle folding double link mechanism of one side, and B figure is a front view of the middle folding double linkage mechanism.
  • FIG. A is a partially cutaway front view showing a state in which the half-fold double link mechanism is in a folded and lying posture
  • FIG. B is a plan view of the main part. It is a partially notched front view which shows the intermediate
  • a work lifting / lowering support device of the present invention is installed on a traveling carriage 2 that is supported on a guide rail 1 and travels.
  • the workpiece lifting / lowering support device on the traveling carriage 2 is supported by a pair of left and right middle folded double link mechanisms 3A and 3B and the respective middle folded double linkage mechanisms 3A and 3B with the traveling direction of the traveling carriage 2 as the front and rear direction. It is comprised from the left-right paired workpiece support stand 4A, 4B.
  • Each work support 4A, 4B is symmetrical, and is a long bar member 5 that is long in the front-rear direction, arms 6a, 6b projecting inward from both front and rear ends of the bar member 5, and It consists of a work support 7 provided at the upper end of the arms 6a, 6b, and the substantially central portion of the rod-like member 5 in the longitudinal direction is bent and supported by the double link mechanisms 3A, 3B.
  • the left and right pair of middle-folded double link mechanisms 3A and 3B have the lengths of the left and right sides of the workpiece W such as an automobile body that is supported by the pair of left and right workpiece support bases 4A and 4B at two front and rear sides. It is arranged at a position directly below the direction.
  • Each of the half-fold double link mechanisms 3A and 3B is of a bilaterally symmetric type, and is a pair of lower parallel links interposed between a base 8 which is a carriage body of the traveling carriage 2 and an intermediate link member 9. 10 and an upper parallel link pair 12 interposed between the intermediate link member 9 and the upper link member 11.
  • the first locking means 13 for regulating the angle between the lower parallel link pair 10 and the upper parallel link pair 12, the lower parallel link pair 12 and the base Locking means 15 composed of second locking means 14 for restricting the angle with the base 8 is also provided.
  • the lower parallel link pair 10 includes two links 10 a and 10 b, and one end of each of the links 10 a and 10 b is front and rear on the base 8.
  • the upper parallel link pair 12 includes two links 12 a and 12 b arranged so as to sandwich the intermediate link member 9.
  • one end of the intermediate link member 9 arranged horizontally in the left-right direction are pivotally connected by a common support shaft 18a in the front-rear horizontal direction, and are also parallel to the lower side in parallel with one end of the other link 12b.
  • the free end of the other link 10b of the link pair 10 and the other end of the intermediate link member 9 are pivotally connected to each other by a common front / rear horizontal support shaft 18b.
  • the upper link member 11 of the half-fold double link mechanism 3A, 3B is fixed to a substantially central portion in the length direction of the bar-shaped member 5 of the work support bases 4A, 4B, and the bar-shaped member 5 is below the bar-shaped member 5.
  • bearing portions 11a and 11b are provided with bearing portions 11a and 11b at symmetrical positions.
  • the other ends of both the links 12a and 12b of the upper parallel link pair 12 are pivotally coupled to the bearing portions 11a and 11b of the upper link member 11 by pivots 19a and 19b in the front and rear horizontal directions, respectively.
  • each of the half-fold double link mechanisms 3A and 3B has a pair of left and right support shafts 17a and 17b on the base 8 side and a pair of left and right support shafts 18a and 18b on the intermediate link member 9 side when viewed from the front. Is located at each vertex of the parallelogram, and a pair of left and right support shafts 18a and 18b on the intermediate link member 9 side and a pair of left and right support shafts 19a and 19b on the work support bases 4A and 4B side are parallelograms. It will be located at the apex.
  • the links 12a, 12b of the upper parallel link pair 12 are adjacent to both outer sides of the intermediate link member 9, and further, the links of the lower parallel link pair 10 are adjacent to both outer sides of the links 12a, 12b.
  • the links 10a and 10b are in parallel.
  • the first locking means 13 constituting the locking means 15 includes a locked member 20 and the locked member 20.
  • the locking member 21 includes a locking piece 21 that can be freely engaged with and disengaged from the recess 20a formed by cutting from the front end. It consists of a strip-like plate fixedly projecting from the end in the extending direction of the link 10a.
  • the locking piece 21 is perpendicular to the length direction of the link 12a on the link 12a of the upper parallel link pair 12 and covered. It is supported by a support shaft 22 parallel to the plate surface of the locking member 20.
  • the second locking means 14 constituting the locking means 15 includes a locked hole 23 provided so as to penetrate in the front-rear horizontal direction at a position near the lower end of the link 10a of the lower parallel link pair 10, and a base 8 is formed of a locking pin 25 supported by a support member 24 mounted on 8 so as to be detachable from the locked hole 23.
  • stoppers 26 and 27 for restricting the deployment angle of the upper parallel link pair 12 with respect to the lower parallel link pair 10 are provided in each of the folded double link mechanisms 3A and 3B.
  • the stopper 26 includes a stopper member 26a fixed to the side surface of the link 10a and a stopper member 26b fixed to the end surface of the link 12a on the intermediate link member 9 side. By the contact, the expansion angle between the link 10a of the lower parallel link pair 10 and the link 12a of the upper parallel link pair 12 is limited.
  • the stopper 27 is composed of a stopper member 27a fixed to the side surface of the link 10b, and a stopper member 27b fixed to the end peripheral surface of the link 12b on the intermediate link member 9 side.
  • the contact angle of 27b limits the deployment angle between the link 10b of the lower parallel link pair 10 and the link 12b of the upper parallel link pair 12.
  • the expansion limit angle between the links 10a and 12a restricted by the stoppers 26 and 27 and the expansion limit angle between the links 10b and 12b are the same. Further, only one of the stoppers 26 and 27 may be employed.
  • the two double-folding link mechanisms 3A and 3B can be folded toward the inner sides approaching each other as shown in FIGS. 1A and 7. That is, by rotating the lower parallel link pair 10 inwardly around the support shafts 17a and 17b, and rotating the upper parallel link pair 12 in the opposite outward direction around the support shafts 18a and 18b, The links 12a and 12b of the upper parallel link pair 12 are fitted between the links 10a and 10b of the lower parallel link pair 10, and these links 10a, 10b, 12a and 12b, the intermediate link member 9, and the upper link member All of the eleven bearing portions 11a, 11b are horizontally supported horizontally and supported on the surface of the base 8.
  • the inner end thereof that is, the bent portion between the lower parallel link pair 10 and the upper parallel link pair 12 is The base 8 is adjacent to each other at a substantially central position in the left-right width direction.
  • the locking piece 21 of the first locking means 13 of the locking means 15 rotates in a direction parallel to the link 12b. It is moved to be disengaged from the recessed portion 20a of the locked member 20, and is switched to the non-locking posture that does not interfere with the folding operation of the half-fold double link mechanisms 3A and 3B. Further, the locking pin 25 in the second locking means 14 of the locking means 15 is switched to the non-locking position where it is detached from the locked hole 23 on the link 10b side.
  • the work support bases 4A, 4B are at the lowest position closest to the base 8, and therefore, the work support bases 4A, 4B are appropriately placed on the work support bases 4A, 4B.
  • the workpiece W is transferred by the means, and the two front and rear sides of the left and right sides of the workpiece W are supported by the workpiece support 7 of the workpiece support bases 4A and 4B.
  • the lifter forks F are mounted on the base 8 between the rod-like member 5 of the work support bases 4A and 4B at the lowest position and the base 8, preferably on both front and rear sides of the half-fold double link mechanisms 3A and 3B. Insert horizontally from both sides.
  • the forks F When the forks F are inserted to a predetermined depth, the forks F are driven to rise, and the fork F lifts the pair of left and right workpiece support bases 4A and 4B vertically upward via the rod-like member 5. As the workpiece support bases 4A and 4B are vertically raised in parallel at this time, as shown in FIG.
  • the upper parallel link pair 12 stands up and rotates inwardly around the support shafts 18a and 18b at the same time as it stands up and turns outward, and the two-fold double link mechanisms 3A and 3B move up and stand up from the collapsed posture. It will be.
  • the fork F is at the point in time when the position of the intermediate link member 9 is slightly inwardly projecting inward, just before the two middle-folding double link mechanisms 3A and 3B are vertically aligned.
  • the lifting of the work support bases 4A and 4B is stopped, and the appropriate position between the upper and lower ends of the double link mechanisms 3A and 3B is folded outward by a pusher (attraction tool) provided on a lifter equipped with a fork F, for example. Press on.
  • the two double-folded double link mechanisms 3A and 3B have a swelled symmetrical shape in which the position of the intermediate link member 9 slightly protrudes outward through a completely upright posture shown in FIG.
  • both middle-folding double link mechanisms 3A, 3B have the intended final deployed upright posture shown in FIG.
  • the outward bending motion of 3B is prevented by the contact between the stopper members 26a and 26b of the stoppers 26 and 27 and the stopper members 27a and 27b.
  • the fork F can be lifted and lowered with high accuracy, or the fork F is in the vertically straight complete standing posture shown in FIG. Even when an upward lifting force is applied to the mechanism, when a mechanism that absorbs the force is combined, for example, the shaft holes of the bearings 16a and 16b are elongated in the vertical direction, and the two-fold double link mechanisms 3A and 3B are In the case of being configured to be able to be pulled up slightly upward, in the state shown in FIG. 9, the lifting of the work support bases 4A and 4B by the fork F is not stopped, and the half-fold double link mechanisms 3A and 3B are arranged in a vertical straight line as shown in FIG.
  • the workpiece support bases 4A and 4B are lifted by the fork F and stopped until a fully upright posture is obtained, and then both are pushed by a pusher (drawer) as described above.
  • the fork F is lowered while pressing the appropriate positions between the upper and lower ends of the folded double link mechanisms 3A and 3B outwardly, and the middle folded double link mechanisms 3A and 3B are in the intended final deployed standing posture shown in FIG. 1B. Can be reached.
  • the first latching means 13 of the locking means 15 is locked on the link 12b side.
  • the piece 21 is rotated downward around the support shaft 22 to be fitted into the recessed portion 20a of the locked member 20 on the link 10b side, and the locking pin 25 of the second locking means 14 is moved forward. Then, it is inserted into the locked hole 23 on the link 10b side.
  • the first locking means 13 and the second locking means 14 of the locking means 15 are folded in half by the stoppers 26, 27 so that the double link mechanisms 3A, 3B have the desired final deployed standing posture shown in FIG. 1B.
  • the locking piece 21 can be fitted into the recessed portion 20a of the locked member 20 and the locking pin 25 can be inserted into the locked hole 23 only when the locking pin 21 is stopped. Yes.
  • the lower parallel link pair 10 and the upper parallel link pair 12 of the half-fold double link mechanisms 3A and 3B Is fixed by the first locking means 13, and the angle between the lower parallel link pair 10 and the base 8 is fixed by the second locking means 14, so that the two-fold double link mechanism As shown in FIG. 1B, 3A and 3B are fixed to the base 8 in a final expanded upright posture of an intermediately bulging symmetrical shape in which the position of the intermediate link member 9 slightly protrudes outward. Can be lowered and pulled out.
  • the first locking means 13 only has to prevent the folded double link mechanisms 3A and 3B from expanding toward the fully upright posture shown in FIG.
  • the locked member 20 of the locking means 13 is in contact with the side surface of the locking piece 21 so that the half-folded double link mechanisms 3A and 3B are in a vertical straight line as shown in FIG. It is sufficient if there is a contact surface 20b that prevents the standing posture from expanding. That is, a part of the first locking means 13 of the locking means 15 can be constituted by the stoppers 26 and 27.
  • the locking piece 21 of the first locking means 13 is engaged with the recess 20a (or the contact surface 20b) on the locked member 20 side and the recess 20a (or the contact surface 20b). It is configured to be selectively switchable against the released non-locking posture against the spring force, and the locking piece 21 is switched between the locking posture and the non-locking posture by the lifting-side switching means provided with the fork F.
  • a suitable actuator such as a solenoid, a motor or a cylinder for switching the locking piece 21 between the locking position and the non-locking position can be used as the first locking means. 13 can also be incorporated.
  • the locking pin 25 of the second locking means 14 is also spring-engaged between a locking position where the locking pin 25 is engaged with the locked hole 23 on the link 10 b side and a non-locking position where the locking pin 25 is detached from the locked hole 23.
  • it is configured so that it can be switched selectively, and the locking pin 25 can be switched between the locking position and the non-locking position by the switching means on the lifter side provided with the fork F.
  • an appropriate actuator such as a solenoid, a motor, or a cylinder for switching the locking pin 25 between the locking position and the non-locking position can be incorporated in the second locking means 14.
  • the work support bases 4A and 4B supported by the two middle-folded double link mechanisms 3A and 3B are completely connected to each other at the same level by the work W supported by the work support bases 4A and 4B, or as described later. If the connecting member is connected and integrated with each other, the fork F is folded in the middle by the fork F, and the second locking means 14 is folded in the middle when the double link mechanisms 3A and 3B are in the final deployed standing posture. If the lower parallel link pair 10 of the double link mechanisms 3A and 3B is fixed to the base 8, the two double link mechanisms 3A and 3B can be held in the final deployed standing posture. Accordingly, it is possible to configure the lock means 15 only from the second locking means 14 in this way.
  • the reverse operation may be performed. That is, the fork F of the lifter is inserted into the lower side of the bar-like member 5 of the work support bases 4A and 4B and raised, and the work support bases 4A and 4B are supported by the fork F via the bar-like member 5. The locking action of the first locking means 13 and the second locking means 14 of the locking means 15 is released.
  • the locking piece 21 of the first locking means 13 is switched to the non-locking position so as to be detached upward from the recessed portion 20a (contact surface 20b) of the locked member 20, and the engagement of the second locking means 14 is also achieved.
  • the stop pin 25 is retracted to the unlocked position and detached from the locked hole 23.
  • the workpiece support tables 4A and 4B descend in a vertical parallel manner and reach the lowest position while performing a bending motion to the folding and lying posture supported by the surface of the table 8. Thereafter, the operation of lowering the work support bases 4A, 4B (work W) to the lowest position is completed by retracting the fork F to both outer sides.
  • the traveling carriage 2 equipped with the workpiece lifting and lowering support device that can vertically lift and lower the workpiece W to be supported between the lowest position and the highest position by the fork F of the external lifter is an automobile assembly line.
  • the work (car body) W In the trim line and final line set in the car assembly line, the work (car body) W is supported at the lowest position where it is lowered to near the surface of the traveling carriage 2, In the chassis line, the work (automobile body) W can be supported in a state where the work (automobile body) W is raised to the height at which the worker can enter the work (automobile body) W, that is, the highest position.
  • the traveling carriage 2 equipped with the workpiece lifting / lowering support device of the present invention when used, the fork F and the side of the switching point from the trim line to the chassis line and the switching point from the chassis line to the final line are provided.
  • a lifter provided with a pusher, an operation means for the lock means 15 and the like is also provided.
  • the configuration of the locking means 15 that holds the folded double link mechanisms 3A and 3B in the final deployed standing posture is not limited to that of the above embodiment.
  • the half-fold double link mechanisms 3A and 3B in the state where the first locking means 13 is operated, only have a state corresponding to one parallel link which cannot be half-broken. Even if the work support bases 4A and 4B supported by the linkage mechanisms 3A and 3B are connected and integrated with each other by the work W or by connecting members as will be described later, The pair of middle-folding double link mechanisms 3A and 3B move in parallel to the left and right with respect to the base 8, and the workpiece W cannot be supported at a predetermined position.
  • At least one lower parallel link pair 10 (at least one of the links 10a and 10b) of the pair of right and left middle folded double link mechanisms 3A and 3B is connected to the second locking means. 14 is fixed at a fixed angle with respect to the base 8, but the bending motion of the half-fold double link mechanisms 3 ⁇ / b> A and 3 ⁇ / b> B supporting the work W and the swinging with respect to the base 8 are supported.
  • Locking means for preventing at least one parallel rocking movement of the upper parallel link pair 12, for example, at least one link of the links 10a, 10b, 12a, 12b and the intermediate link member 9 or A means of coupling the side link member 11, or parallel links 10a, 10b do or link 12a, 12b if the means for coupling together, it is also possible to configure the locking means.
  • one of the links 10a and 10b of the lower parallel link pair 10 and one of the links 12a and 12b of the upper parallel link pair 12 are connected to the intermediate link member 9. It is also possible to configure the locking means by means for coupling to the.
  • the second locking means 14 shown in FIG. 10 links 10a and 10b fixedly projecting from contact members 90a and 90b fixed to the side surfaces near the end of the base 8 side, and bearings 16a and 16b pivotally supporting the links 10a and 10b on the base 8 side.
  • a first stopper 92 composed of stopper members 91a and 91b, an abutting member 93a fixed to the upper surface of one end portion of the intermediate link member 9, and an end portion of one link 12a of the upper parallel link pair 12 on the intermediate link member 9 side.
  • the second stopper 94 constituted by the stopper member 93b fixed to the side surface in the vicinity, and the end portion peripheral surface on the upper link member 11 side of the links 12a and 12b of the upper parallel link pair 12 project.
  • the contact member 95a, and 95b, the bearing portion 11a of the upper link member 11, the stopper member 96a which is fixed projecting from the side surface of the 11b, is constituted by a third stopper 97 which is composed of a 96b.
  • the stoppers 92, 94, and 97 are configured such that the half-fold double link mechanisms 3 A and 3 B are in the final deployed upright posture shown in the figure, and the first parallel lock pair 10 and the upper parallel link pair 12 are Are locked to each other at a predetermined angle, the contact members 90a, 90b, 93a, 95a, 95b are configured to contact the counterpart stopper members 91a, 91b, 93b, 96a, 96b, respectively. According to this configuration, the entire folded double link mechanisms 3A and 3B in a state where the lower parallel link pair 10 and the upper parallel link pair 12 are locked at a predetermined angle by the first locking means 13 are illustrated.
  • first stopper 92 Parallel swinging motion from the final deployed standing posture to the outside (the direction in which the two double-folded double link mechanisms 3A and 3B are separated from each other) is prevented by the first stopper 92, and parallel swinging motion to the opposite inside is performed. Can be blocked by the second stopper 94 and the third stopper 97. Therefore, the movable member (locking pin 25) that needs to be operated is unnecessary, and the structure and control system can be simplified to reduce the cost.
  • the first stopper 92 may be configured so as to be able to prevent the link 10a, 10b from swinging to the outside of either one of the links 10a, 10b, and the second stopper 94 and the third stopper 97 are also included therein. Only one of them may be provided.
  • the third stopper 97 when the third stopper 97 is employed, only one of the links 12a and 12b may be configured so that the swinging with respect to the upper link member 11 can be limited. Further, although not shown, the second stopper 94 may be configured between the link 12b and the intermediate link member 9.
  • the pair of left and right middle folded double link mechanisms 3A and 3B are positioned outward when viewed from the front.
  • the links 10a and 12a are located at a position separated rearward by a distance L1 in the front-rear direction with respect to the center of gravity position WP on the front side of the work (automobile body) W supported by the pair of left and right work support bases 4A and 4B.
  • the links 10b and 12b located inside the pair of left and right middle folded double link mechanisms 3A and 3B are at a position separated rearward by a distance L2 (L2> L1) in the front-rear direction with respect to the center of gravity position WP. It is farther away from the center of gravity position WP than the outer links 10a, 12a.
  • the outer links 10a and 12a are tensioned.
  • a force acts, and a compressive force acts on the inner links 10b and 12b.
  • the outer links 10a and 12a on which the tensile force acts are close to the center of gravity position WP of the workpiece W
  • the inner links 10b and 12b on which the compression force acts are moved away from the center of gravity position WP of the workpiece W.
  • 10b, 12a, 12b can be reduced in tensile force and compressive force.
  • the traveling carriage 2 is shown to travel in the length direction (front-rear direction) of the workpiece (automobile body) W whose left and right sides are supported by the workpiece support bases 4A and 4B. May be one that travels in the left-right width direction of a work (automobile body) W whose left and right sides are supported by the work support bases 4A, 4B.
  • Driving the traveling carriage 2 in such a direction is more convenient for the work on the chassis line, and conversely, in the trim line and the final line, the work (cars) whose left and right sides are supported by the work support bases 4A and 4B. Since it is convenient for work that the traveling carriage 2 travels in the length direction (front-rear direction) of the body W, it is desirable that the traveling carriage 2 can switch the traveling direction between the front-rear direction and the left-right width direction.
  • the upper link members 11 of the folded double link mechanisms 3 ⁇ / b> A and 3 ⁇ / b> B can be connected and integrated with each other by a connecting member 28.
  • the front and rear end portions of the rod-like member 5 fixed to the upper link member 11 of each of the half-fold double link mechanisms 3A and 3B are connected by a connecting member 28, and the rectangular view 1
  • One workpiece support base 29 can be configured, and the workpiece support 7 can be protruded at four positions on the front, rear, left and right sides of the workpiece support base 29.
  • the folded middle link mechanisms 3A, 3B are folded between the lying down posture and the deployed standing posture.
  • Drive means 30 for undulating motion can be provided.
  • the drive means 30 includes a bracket 31 projecting from the lower side of the base 8 of the traveling carriage 2 and an inner side of the lower parallel link pair 10 in each half-fold double link mechanism 3A, 3B.
  • a cylinder unit 32 that passes through the base 8 in the vertical direction and connects the link 10b positioned can be provided.
  • the second locking means 14 of the lock means 15 can be used as the drive means 30.
  • the described second locking means 14 can be eliminated.
  • the cylinder unit 32 is configured such that when the cylinder unit 32 is extended to the extension limit, the half-broken double link mechanisms 3A and 3B reach the final deployed standing posture.
  • a stopper 33 that restricts the unfolding and bending movement of the half-fold double link mechanisms 3A and 3B to the final unfolded standing posture for example, a bearing that pivotally supports the links 10a and 10b of the lower parallel link pair 10 on the base 8.
  • 16a and 16b are provided side by side, and the stoppers 33 and the urging force of the cylinder unit 32 can fold and hold the double link mechanisms 3A and 3B in a final deployed standing posture.
  • the driving means 30 When the driving means 30 is used in combination, the pair of left and right workpiece support bases 4A and 4B supported by the respective folding double link mechanisms 3A and 3B are completely connected to each other at the same level by the workpiece W to be supported. Otherwise, when the lower parallel link pair 10 is caused to move up and down by the driving means 30, the upper link member 11 (work support bases 4A and 4B) of the upper parallel link pair 12 cannot be lifted vertically parallel. Therefore, when using the driving means 30 together, it is preferable to combine the configurations shown in FIG. Further, by combining the driving means 30 capable of holding the folded double link mechanisms 3A and 3B in the final deployed standing posture and the configuration shown in FIG. 15 and the first locking means 13 and the second locking means 14 described above can be eliminated.
  • the intermediate folding standing postures (shown in the right half of FIG. 13) and the folded lying postures (shown in the left half of FIG. 13) are lower than the deployed standing posture.
  • a cam rail 35a, 35b for operating the lifting / lowering body 34 up and down as the traveling carriage 2 travels is laid on the carriage traveling path side.
  • the elevating body 34 uses elevating rods 36a and 36b that push up the inner links 10b in the lower parallel link pairs 10 of the folded double link mechanisms 3A and 3B, respectively.
  • Lifting guides 37a and 37b for guiding the lifting and lowering movements 36a and 36b freely are provided on the base 8, and cam driven rollers 38a that roll on the cam rails 35a and 35b are provided at the lower ends of the lifting rods 36a and 36b. 38b is pivotally supported.
  • the pair of left and right workpiece support bases 4A and 4B supported by the two folded double link mechanisms 3A and 3B are completely connected to each other at the same level by the workpiece W to be supported, or
  • the condition shown in FIG. 11 is that it is connected and integrated, but the section in which the traveling carriage 2 travels with the workpiece support bases 4A and 4B supported at the lowest position (in the automobile assembly line, the trim line).
  • the traveling carriage 2 travels in the section where the cam rails 35a and 35b are laid in the final line
  • the lift rods 36a and 36b are pushed up by the cam rails 35a and 35b, and the lift rods 36a and 36b are bent in each way.
  • the inner link 10b in the lower parallel link pair 10 of the double link mechanisms 3A and 3B is pushed up by the same height.
  • Each center bending duplicate link mechanism 3A, 3B is expanded to a lower intermediate deployed upright position than the final deployment standing posture (shown in the right half of FIG. 13). Accordingly, in the section where the cam rails 35a and 35b are laid, the work W supported by the work support bases 4A and 4B can be transported in a state of being raised from the lowest position to the intermediate position.
  • the structure of the raising / lowering body 34 is not limited to the structure shown in FIG.
  • the base 8 is supported by a pantograph mechanism as described in Japanese Patent Application Laid-Open No. 2009-51290 in order to increase the push-up amount with respect to the half-fold double link mechanisms 3A, 3B from the push-up height of the cam rails 35a, 35b.
  • a lifting platform that vertically moves up and down is provided, and on this lifting platform, a protruding portion that protrudes the inner link 10b in each of the lower parallel link pairs 10 of the middle folded double link mechanisms 3A and 3B is provided.
  • One of the cross links constituting the pantograph mechanism may be provided with a push-up operation unit having a cam driven roller at the lower end.
  • the pair of left and right middle folded double link mechanisms 3 ⁇ / b> A and 3 ⁇ / b> B is finally deployed in an upright posture, i. Is configured such that the position of the intermediate link member 9 is in the shape of an indentation that projects inward.
  • the locked member 20 of the first locking means 13 is provided with a contact surface 20b as shown in FIG. 6B.
  • the stoppers 26 and 27 are slightly expanded to the side that is vertically aligned as shown in FIG. 14B, the folded double link mechanisms 3A and 3B exceed the final deployed standing posture shown in FIG. 14A. It is comprised so that it can contact
  • the half-fold double link mechanisms 3A and 3B are switched to the final deployed upright posture of the middle dent symmetrical shape shown in FIG. 14A, and the first locking means 13 and the second locking means 15 of the locking means 15 are switched.
  • the folded double link mechanisms 3 ⁇ / b> A and 3 ⁇ / b> B are held in the final deployed upright posture with respect to the base 8, so that the workpiece W supported by the workpiece support bases 4 ⁇ / b> A and 4 ⁇ / b> B has a predetermined height. Can be supported at the highest position.
  • the fork F is switched to the non-locking position after the locking pin 25 of the second locking means 14 is switched to the non-locking position while the workpiece support bases 4A and 4B are supported by the fork F.
  • the workpiece support bases 4A and 4B are lifted up slightly, and the half-folded double link mechanisms 3A and 3B are expanded to the state shown in FIG. 14B where the stoppers 26 and 27 come into contact with each other.
  • the stop piece 21 is switched to the non-locking posture. After that, if the workpiece support bases 4A and 4B are lowered vertically and parallelly by the fork F, the half-fold double link mechanisms 3A and 3B are folded and fallen to reach the final folded and fallen posture.
  • the middle folded double link mechanism 39 includes a lower parallel link group 41 interposed between the base 8 that is the main body of the traveling carriage 2 and the intermediate link member 40, the intermediate link member 40, The upper parallel link group 43 is interposed between the upper link member 42 and the upper link member 42.
  • the lower parallel link group 41 includes four links 41a to 41d, and one ends of the outer two links 41a and 41b are respectively supported by bearings 44a and 44b fixed on the base 8 at a predetermined interval in the front-rear direction.
  • Bearings 44a and 44b fixed on the base 8 are pivotally supported by front and rear horizontal support shafts 45a and 45b that are concentric with each other, and one ends of the two inner links 41c and 41d are separated from the bearings 44a and 44b outward in the left-right direction.
  • the bearings 44c and 44d fixed at a predetermined distance in the front-rear direction are pivotally supported by pivots 45c and 45d that are concentric with each other in the front-rear horizontal direction.
  • the intermediate link member 40 includes two horizontal links 40a and 40b.
  • the upper parallel link group 43 is composed of three links 43 a to 43 c, and one end of one link 43 a of the two outer links 43 a and 43 c is one of the links 41 a outside the lower parallel link group 41. It is located between the free end and one end of the horizontal link 40a of the intermediate link member 40 located on the inner side thereof, and is pivotally coupled so as to be relatively swingable by a support shaft 46a penetrating these in the front-rear and horizontal directions.
  • One end of the link 43b is located between the free end of the other link 41b outside the lower parallel link group 41 and one end of the horizontal link 40b of the intermediate link member 40 located inside thereof, and these are horizontally and longitudinally
  • the shafts 46b are pivotally coupled so as to be relatively swingable by a shaft 46b penetrating in the direction.
  • the free ends of the two inner links 41c and 41d of the lower parallel link group 41 are in a state in which one end of the central link 43c of the upper parallel link group 43 is sandwiched from both sides, and the two horizontal links 40a of the intermediate link member 40. , 40b, and these five links are pivotally connected to each other by a single pivot 46c penetrating in the front-rear and horizontal directions.
  • the upper link member 42 is composed of three bearing members 42a to 42c that are fixed to the central region of the bar-like member 5 of the work support bases 4A and 4B and extend obliquely downward.
  • the outer two bearing members 42a and 42b include The free ends of the two outer links 43a and 43b of the upper parallel link group 43 are pivotally supported by pivot shafts 47a and 47b that are concentric with each other in the front-rear and horizontal directions.
  • the free end of the central link 43c of the upper parallel link group 43 is pivotally supported by a longitudinal support shaft 47c.
  • the center-folding double link mechanism 39 having the above-described configuration includes the left and right support shafts 45a (45b) and 45c (45d) on the base 8 side and the left and right support shafts 46a on the intermediate link member 9 side in the front view. (46b) and 46c are located at the respective apexes of the parallelogram, and the left and right two-row support shafts 46a (46b) and 46c on the intermediate link member 9 side and the left and right two-row support on the workpiece support bases 4A and 4B side.
  • the axes 47a (47b) and 47c are positioned at the vertices of the parallelogram.
  • the four links 41a to 41d constituting the lower parallel link group 41 are arranged in parallel at substantially equal intervals, and the three links 43a to 43c constituting the upper parallel link group 43 are arranged as the lower parallel links.
  • the groups 41 are arranged in parallel at substantially equal intervals while being positioned between the links 41a to 41d.
  • the first locking means 13 of the locking means 15 having the same structure as that of the previous embodiment is connected to one of the two inner links 41 c of the lower parallel link group 41 and the upper parallel link.
  • the link group 43 is disposed between the center link 43c.
  • the stoppers 26 and 27 are disposed between the two outer links 41 a and 41 b of the lower parallel link group 41 and the two outer links 43 a and 43 b of the upper parallel link group 43.
  • the second locking means 14 of the locking means 15 is omitted.
  • a pair of left and right middle-folded double link mechanisms 48A and 48B installed on the traveling carriage 2 include a lower link pair 49 whose lower end is pivotally supported on the base 8, and the lower link pair. 49.
  • the upper link 50 is pivotally supported by a lower end 49.
  • the workpiece support bases 4A and 4B can swing up and down so as to protrude inward from the upper link 50.
  • a locking means 51 that holds the folded double link mechanisms 48A, 48B in the deployed standing posture when the workpiece support bases 4A, 4B are vertically raised to a predetermined height.
  • a work support base locking means 52 for holding the work support bases 4A and 4B in a horizontal position is provided alongside the half-fold double link mechanisms 48A and 48B in the standing posture.
  • the lower link pair 49 includes two links 49a and 49b arranged in parallel in the front-rear direction, and the bearings 53a and 53b whose lower ends of the links 49a and 49b are fixed on the base 8 are mutually connected. It is pivotally supported by concentric front and rear horizontal support shafts 54a and 54b so that it can swing left and right.
  • the upper link 50 is located between the links 49a and 49b of the lower link pair 49, and one end of the upper link 50 is swingable to the left and right by a longitudinal support shaft 50a at a middle position in the longitudinal direction of the links 49a and 49b. It is connected to the shaft.
  • the free end of the upper link 50 is pivotally supported by a longitudinally supporting shaft 56 between a pair of shaft supporting members 55 fixed to the rod-like member 5 of the work support bases 4A and 4B.
  • the work support bases 4A and 4B can swing up and down with respect to the upper link 50.
  • a support auxiliary member 57 is installed between the arms 6a and 6b in parallel with the rod-like member 5 on the work support bases 4A and 4B, and the support auxiliary member 57 and the rod-like member 5 are supported by the fork F.
  • the work support bases 4A and 4B are horizontally supported by the fork F and can be moved up and down in a vertical parallel manner.
  • the arm 6a, 6b may be supported by the fork F without providing such a supporting auxiliary member 57, or a horizontal supported surface may be provided at a portion of the rod-like member 5 supported by the fork F. You may adhere the member which has.
  • the locking means 51 includes a first locking means 58 that locks the upper link 50 with respect to the lower link pair 49 in an extended posture of the lower link pair 49, and a lower link pair 49 with respect to the base 8. And a second locking means 59 for fixing the vertical standing posture.
  • the first locking means 58 includes a receiving plate 58a fixedly attached between the inner free ends of the two links 49a and 49b of the lower link pair 49, and the two links 49a and 49b of the lower link pair 49.
  • a pair of latches rotatably supported by support shafts 58b and 58c at right angles to the length direction of the links 49a and 49b and at right angles to the support shaft 56, respectively.
  • a pair of pieces 58d, 58e and an outer surface of the upper link 50 are located at a position located between the pair of locking pieces 58d, 58e when the upper link 50 is in the extended posture of the lower link pair 49.
  • the locking plates 58d and 58e are fixed plates 58f fixed so as to protrude toward both sides.
  • the pair of locking pieces 58d and 58e are selected as an unlocking posture in a direction parallel to the links 49a and 49b and a locking posture in a direction perpendicular to the links 49a and 49b. The posture can be freely switched.
  • the second locking means 59 is a stopper 60 incorporated in the bearings 53 a and 53 b so as to prevent the links 49 a and 49 b of the lower link pair 49 from swinging outward from the vertical standing posture with respect to the base 8. And the two locking arms 61a and 61b and the locked arms protruding outward from the links 49a and 49b of the lower link pair 49 so as to engage with the locking arms 61a and 61b. It consists of pins 62a and 62b.
  • the two locking arms 61a and 61b are adjacent to the outside of the links 49a and 49b of the lower link pair 49, and are separated inward in a side view with respect to the bearings 53a and 53b of the links 49a and 49b.
  • the guide long hole 65 is formed so as to continue from the intermediate appropriate position to the free end portion.
  • the locked pins 62a and 62b are fitted, and a bent locking recess 65a (see FIG. 19A) for preventing the links 49a and 49b from tilting inward is formed.
  • the work support base locking means 52 is composed of a pair of left and right half-folded double links 66 and 67 installed between the upper link 50 and the shaft support member 55, and a receiving plate 58 a of the first locking means 58. It is configured.
  • the half-folded double links 66 and 67 are obtained by connecting two links 68 a and 68 b with a support shaft 68 c in the front and rear horizontal direction, and the free ends of the inner links 68 a are front and rear on both side surfaces of the upper link 50.
  • the free end of the outer link 68b is pivotally supported on both inner side surfaces of the shaft support member 55 by the front and rear horizontal support shafts 68e. .
  • the shaft hole 69 for supporting the shafts 54a and 54b of the bearings 53a and 53b on the base 8 side for supporting the links 49a and 49b of the lower link pair 49 and the second locking means 59 are locked.
  • the links 49a and 49b and the locking arms 61a and 61b are pulled upward from the shaft hole 70 in which the support shafts 64a and 64b of the bearings 63a and 63b on the base 8 side that support the arms 61a and 61b are supported. It is a long hole that is long in the vertical direction.
  • the lower link pair 49 is connected to the support shafts 54a and 54a in a state where the locked pins 62a and 62b of the second locking means 59 can slide in the guide long holes 65 of the locking arms 61a and 61b.
  • the work support base locking means 52 is rotated by turning the inside link 54b inwardly away from the stopper 60 and turning the upper link 50 outward with respect to the lower link pair 49 around the support shaft 50a.
  • the center support shaft 68c is folded in the direction away from the support shaft 56 at the upper end of the upper link 50 due to gravity (the spring force may be used together) in the middle folded double links 66 and 67, and the support member 55 is supported by the support shaft 56. As shown in FIG.
  • the lower link pair 49, the upper link 50, and the shaft support member 55 are folded in a zigzag shape and fall on the base 8.
  • the locking arms 61 a and 61 b on both sides of the lower link pair 49 rotate in the same direction as the lower link pair 49 around the support shafts 64 a and 64 b, and the upper link 50 corresponds to the lower link pair 49.
  • the half-folded double links 66 and 67 are folded on both sides of the upper link 50, and each is in a parallel state at the same level as the lower link pair 49.
  • the shaft support member 55 is supported in a horizontal posture between the links 49 a and 49 b of the lower link pair 49 on the outside of the half-broken double links 66 and 67.
  • the pair of left and right workpiece support bases 4A and 4B fixedly supported by the shaft support member 55 via the rod-shaped member 5 are provided at the lowest by folding the both middle folded double link mechanisms 48A and 48B into the lying down posture. Since the position is stable, the workpiece W can be placed and supported on the workpiece support tables 4A and 4B in this state.
  • lifter forks F are placed below the rod-like member 5 and supporting auxiliary member 57 on both sides of the half-fold double link mechanisms 48A and 48B. By inserting and raising, both work support bases 4A and 4B are raised vertically while maintaining a horizontal posture by the fork F.
  • the lower link pair 49 pivots and rises outward around the support shafts 54a and 54b.
  • the upper link 50 pivots and rises inwardly around the support shaft 50a with respect to the lower link pair 49, and the angle between the corners between the upper link 50 and the support member 55 is determined.
  • the links 68a and 68b of the half-broken double links 66 and 67 rotate around the central support shaft 68c in the unfolding direction.
  • the locking arms 61a and 61b are pulled up through the guide long holes 65 by the locked pins 62a and 62b on the lower link pair 49 side, and the lower link pair 49 around the support shafts 64a and 64b. Rotating upright motion in conjunction with
  • the lower link pair 49 With a slight rotation downward due to a combination of force, the lower link pair 49 returns to the original lying posture by being fitted into the bending locking recess 65a of the guide slot 65. Since the rotation in the direction is prevented, the lower link pair 49 is automatically held in the vertical standing posture. On the other hand, the upper link 50 is in contact with the receiving plate 58a on the lower link pair 49 side, and further inward rotation is prevented. In this state, as shown in FIG. 18, the locking pieces 58d and 58e of the first locking means 58 are rotated 90 degrees from the non-locking posture parallel to the links 49a and 49b to switch to the locking posture.
  • the ends of the stop pieces 58d and 58e are overlapped on the outer sides of both sides of the locked plate 58f on the upper link 50 side, so that the upper link 50 is between the receiving plate 58a and the ends of the locking pieces 58d and 58e.
  • the middle double link 66 between the upper link 50 and the shaft support member 55, 67 expands in a straight line inclined at an angle of 45 degrees.
  • the lower link 68a is received by the upper side of the receiving plate 58a on the upper link 50 side, and the half-folded double links 66, 67 are connected to the upper link 50.
  • it functions as a brace that supports the shaft support member 55 (work support bases 4A, 4B) in a right angle inward horizontal posture.
  • the half-broken double link when the work support bases 4A and 4B are raised until the lower link pair 49 and the upper link 50 are in a straight line with the base 8, the half-broken double link.
  • the mechanisms 48A and 48B are automatically locked by the locking means 51 including the first locking means 58 and the second locking means 59 in the vertical straight deployment standing posture at that time, and the deployment standing posture is also provided.
  • the work support bases 4A and 4B are also automatically locked by the work support base locking means 52 in a work support posture that projects horizontally inward from the upper link 50 with respect to the half-fold double link mechanisms 48A and 48B. It will be. Accordingly, in this state, the fork F is lowered and pulled outward to complete the operation of raising the workpiece W to the highest position.
  • the fork F When lowering the workpiece W supported at the highest position to the original lowest position, the fork F is inserted into the lower side of the workpiece support bases 4A and 4B and raised as described above, and the workpiece support base is moved by the fork F. 4A and 4B are supported. At this time, the workpiece support bases 4A and 4B that are stable at the highest position are further lifted by the fork F.
  • the support shafts 54a, 54b on the base 8 side of the lower link pair 49 and the support shafts 64a, 64b on the base 8 side of the locking arms 61a, 61b are respectively connected to the bearings 53a, 53b, 63a, Within the range of play in the vertical direction of the support shafts 54a, 54b, 64a, 64b in the shaft holes (long holes) 69, 70, it moves upward in the shaft holes (long holes) 69, 70 of the 63b.
  • the entire folded double link mechanism 48A, 48B is lifted from the base 8. In this state, no load is applied to the locking pieces 58d and 58e of the first locking means 58 and the locking arms 61a and 61b of the second locking means 59.
  • the first locking means The locking pieces 58d and 58e of 58 are switched to the non-locking posture in which the locking pieces 58d and 58e are separated from the locked plate 58f on the upper link 50 side, and the locking arms 61a and 61b of the second locking means 59 are swung inward.
  • the locked pins 62a and 62b on the lower link pair 49 side are separated from the bending locking recesses 65a in the guide long holes 65 of the locking arms 61a and 61b.
  • an operating force in a direction to bend inward is applied to an appropriate position between the lower end of the lower link pair 49 of the half-fold double link mechanisms 48A and 48B and the upper end of the upper link 50.
  • the fork F supporting the workpiece support bases 4A and 4B is lowered vertically, so that the lower link pair 49 and the locking arms 61a and 61b are turned inward and the upper side is moved upward.
  • the work support bases 4A and 4B are lowered vertically in parallel with the turning operation of the link 50 to the outside and the folding operation of the half-folded double links 66 and 67, and the supporting work W is returned to the original position. Can be lowered to the lowest position.
  • the switching means for switching the locking pieces 58d, 58e of the first locking means 58 between the locking posture and the non-locking posture, and the locking arms 61a
  • An urging means for urging 61b inward only when the work is lowered can be provided in the work lifting support device on the traveling carriage 2, and these means are provided on the lifter side provided with the fork F. You can also keep it.
  • the elevating drive device using the cam rail shown in FIG. 13 can be combined. That is, as shown in FIG. 22, a lifting body that is movable up and down with respect to the base 8 of the traveling carriage 2 is raised and lowered by a cam rail laid along the carriage traveling path, so that the workpiece support bases 4A and 4B are moved to the lowest position.
  • the workpiece support bases 4A and 4B in this embodiment are moved around the support shaft 56 with respect to the half-fold double link mechanisms 48A and 48B (upper link 50).
  • the embodiment shown in FIG. 13 is capable of swinging up and down and is held in a horizontal posture by the work support base locking means 52 only when the folded double link mechanisms 48A and 48B are in the deployed standing posture.
  • the lifting body 71 can be lifted and lowered by supporting both work support bases 4 ⁇ / b> A and 4 ⁇ / b> B at both ends, and the lifting support base 72 is supported at two places on both the left and right sides.
  • the rods 73a and 73b are configured to pass up and down freely with respect to the base 8 through the lift guides 74a and 74b provided on the base 8, and are provided at the lower ends of the lift rods 73a and 73b.
  • the cam driven rollers 75a and 75b that are pivotally supported are configured to roll on the cam rails 76a and 76b.
  • the two work support bases 4A and 4B are shown as being lifted and lowered by one lift support base 72, but the work support bases 4A and 4B are supported on both sides of the half-fold double link mechanisms 48A and 48B.
  • a pair of elevating support bases 72 are provided so that the elevating support bases 72 can be moved up and down in synchronism with each other.
  • 73b, elevating guides 74a and 74b, and cam rails 76a and 76b are provided so that the elevating support bases 72 can be moved up and down in synchronism with each other.
  • the shaft support members 77a and 77b are rocked by the support shaft 56 at the upper ends of the upper links 50 of the pair of left and right middle folding double link mechanisms 48A and 48B of the embodiment shown in FIGS.
  • the rod members 77c and 77d in the front-rear direction are fixedly connected to the shaft support members 77a and 77b, and the front and rear end portions of the rod-like members 77c and 77d are connected and integrated by the connecting member 77e.
  • a rectangular frame-shaped workpiece support stand 78 is configured.
  • the workpiece support 7 can project from the front and rear connecting members 77e.
  • the workpiece support 78 when the half-fold double link mechanisms 48A, 48B are in the deployed standing posture and locked by the first locking means 58 and the second locking means 59 of the locking means 51, the workpiece support 78 Therefore, the workpiece support base locking means 52 becomes unnecessary. Also, in the case of combining the cam drive using the cam rail shown in FIG. 22, the front and rear connecting members 77 can be directly pushed up by the lift rod, and the lift support base 72 can be dispensed with. Of course, when the workpiece support 78 is lifted by the fork F, it is only necessary to support the bar-like member 5, and it is not necessary to support both the workpiece supports 4A and 4B horizontally.
  • a pair of left and right workpiece support bases 4A and 4B that can support two front and rear sides of the left and right sides of the workpiece W are supported by a pair of left and right middle folding double link mechanisms.
  • four work support bases 79a to 79d that support two front and rear sides of the left and right sides of the work W are provided, and each of the work support bases 79a to 79d is independently folded in two. It can also be supported by the continuous link mechanisms 80a to 80d.
  • the two front and rear work support bases 79a and 79b and the work support bases 79c and 79d may be connected and integrated by connecting members 81a and 81b.
  • the work support base of the above-described embodiment that is, a pair of left and right work support bases 4A and 4B each provided with a work support 7 at both front and rear end portions is folded in two at the front and rear, and the double link
  • the configuration supported by the mechanism is substantially the same.
  • one work support 29 and 78 having a rectangular frame shape can be supported by four half-fold double link mechanisms 80a to 80d.
  • the half-fold double link mechanisms 80a to 80d are folded and folded as shown in FIG.
  • the link length direction when in the posture is not parallel to the left-right direction (the front-rear direction depending on the traveling direction of the traveling carriage 2), but is inclined in both the left-right direction and the front-rear direction.
  • And can be arranged radially from the center of the work W to be supported.
  • the workpiece support bases 79a to 79d supported by the respective half-fold double link mechanisms 80a to 80d can be moved up and down in a vertical parallel manner, the work support bases 79a to 79d are connected two by two or all four. However, there is no hindrance to raising and lowering.
  • the pair of right and left middle folding double link mechanisms 3A, 3B, 39, 48A, and 48B in each of the above embodiments are supported on the upper surface of the base 8 of the traveling carriage 2 when they are all in the folded lying posture. Is done. That is, it is not configured to be accommodated in the base 8 of the traveling carriage 2. According to this configuration, a part of the half-fold double link mechanism that is folded from the left and right sides of the base 8 of the traveling carriage 2 does not protrude outward, and the traveling carriage is supported by the flat base 8. Friction for driving the traveling carriage 2 by using the friction drive wheels disposed on the sides of the traveling path as pressure contact surfaces on the left and right sides of the traveling carriage 2 (base 8). It is convenient also when it is set as a drive type traveling vehicle.
  • each embodiment is not limited to that embodiment, and other embodiments can be configured in combination with each other.
  • the workpiece raising / lowering support apparatus of this invention can be mounted and utilized on a traveling trolley
  • the workpiece lifting / lowering support device according to the present invention can be used as a cart-type transport device that is mounted on a traveling carriage for transporting an automobile body and transports while changing the height of the automobile body for each section in an automobile assembly line.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Structural Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Handcart (AREA)
PCT/JP2010/068117 2009-10-21 2010-10-15 ワーク昇降支持装置 Ceased WO2011049007A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
BRPI1011252A BRPI1011252A2 (pt) 2009-10-21 2010-10-15 dispositivo de apoio para elevação de peça de trabalho
US13/432,988 US9004471B2 (en) 2009-10-21 2012-03-28 Workpiece elevating support device

Applications Claiming Priority (2)

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JP2009-241977 2009-10-21
JP2009241977A JP5327473B2 (ja) 2009-10-21 2009-10-21 ワーク昇降支持装置

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US13/432,988 Continuation US9004471B2 (en) 2009-10-21 2012-03-28 Workpiece elevating support device

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CN102039947A (zh) 2011-05-04
BRPI1011252A2 (pt) 2016-03-22
CN102039947B (zh) 2014-03-19
US20120181735A1 (en) 2012-07-19
US9004471B2 (en) 2015-04-14
JP5327473B2 (ja) 2013-10-30

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