JP2008184268A - Elevating/transferring device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce a cost, by simplifying structure of a device for transferring a vehicle body of an automobile from a trolley converter 1 to a slat conveyor 7. <P>SOLUTION: An elevating/conveying means 9 comprises: a pair of right and left elevating bodies 12b; a pair of right and left forward/backward moving bodies 14b supported by the elevating bodies; a front wheel supporting means 15 and a rear wheel supporting means 16 disposed to each forward/backward moving body to be switched between a supporting position of an article to be conveyed and a retreated position of an article to be conveyed; a driving means 27 for return which moves back the forward/backward moving bodies 14b in a direction reverse to a conveying direction of the slat conveyor 7 to a home position; and a part to be engaged 30 for synchronization disposed to each of the forward/backward moving bodies 14b. A synchronizing means 10 comprises: a movable body 51 moving horizontal and vertical directions; a pair of right and left engaging parts 52 for synchronization disposed to the movable body 51 to allow the part to be engaged 30 for synchronization being vertically engaged/disengaged; and a movable body driving means 53 synchronously moving the movable body 51 in the conveying direction of the slat conveyor 7 by a predetermined distance, and then moving back the movable body 51 to the home position. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a lifting / lowering transfer apparatus for transferring an object to be transported suspended by a hanger of a trolley conveyor onto a slat conveyor.

In an automobile assembly line or the like, an automobile body that is suspended and conveyed by a hanger of a trolley conveyor may be transferred onto a slat conveyor that constitutes a part assembly line or the like. The lifting / lowering transfer device disposed at such a transfer location allows the vehicle body suspended by the hanger of the trolley conveyor stopped at a predetermined position to be received by the pair of left and right transported object support tools of the lifting / lowering conveying means. The vehicle body supported by the transported object support is lowered onto the slat conveyor by the lowering of the transported object support, but the vehicle body is safely lowered onto the continuously operating slat conveyor. For this purpose, the automobile body must be lowered onto the slat conveyor while being synchronously transferred in the conveying direction of the slat conveyor. For this reason, in the conventionally known up-and-down transfer device described in Patent Document 1 and the like, a synchronous carriage that can be operated synchronously with the slat conveyor is provided on the slat conveyor side, and the object is supported by lowering the object support of the up-and-down conveying means. The vehicle body supported by the transport object support is temporarily transferred onto the transportable object support base that can be raised and lowered on the synchronous carriage, and the transport object support base is lowered while the synchronous carriage is operated synchronously with the slat conveyor. The car body was transferred to the slat conveyor.
JP-A-2-286515

  In the conventional up-and-down transfer device having the above-described configuration, it is necessary to support the automobile body via a support support table that can be moved up and down on a synchronous carriage that is provided on the slat conveyor side and is operated in synchronization with the slat conveyor. There is a problem that the equipment cost for the synchronous cart becomes very high because it is necessary to provide a large and heavy synchronous cart with load-bearing performance suitable for the transported material, and also to provide a transportable support base that can be raised and lowered. was there. In addition, since the automobile body must be temporarily transferred from the lifting / lowering conveying means onto the synchronous carriage and then the synchronous carriage is operated in synchronization with the slat conveyor, the automobile body on the synchronous carriage must be lowered onto the slat conveyor. There was also a problem that the cycle time until the transfer was completed on the conveyor was increased.

  An object of the present invention is to provide an up-and-down transfer device capable of solving the above-described conventional problems, and the up-and-down transfer device according to claim 1 refers to an embodiment described later. When indicated by a reference numeral, it is an elevating / lowering transfer device 8 for transferring an object to be conveyed (car body W) suspended and conveyed by a hanger 5 of a trolley conveyor 1 onto a slat conveyor 7, which is an elevating / conveying means. 9 and a synchronizer 10. The elevating and conveying means 9 includes a pair of left and right elevating bodies 12 a and 12 b that are arranged side by side so as to sandwich the conveying path on the slat conveyor 7 and move up and down in synchronization with each other. A pair of left and right front and rear moving bodies 14a and 14b supported by the elevating bodies 12a and 12b so as to be horizontally movable back and forth along the conveying direction of the slat conveyor 7, and the support and posture of the object to be conveyed and retracted by these front and rear moving bodies 14a and 14b. The object support tool (front wheel support arms 31a and 31b and rear wheel support arms 33a and 33b) provided so as to be switchable between postures and the respective front and rear moving bodies 14a and 14b in a direction opposite to the conveying direction of the slat conveyor 7. , The return drive means 27 for moving back to the home position, and the synchronized engaged portions 30 provided on the respective front and rear moving bodies 14a and 14b. The synchronization means 10 is horizontally arranged along the conveying direction of the slat conveyor 7. A movable body 51 that is movable back and forth, and a pair of left and right synchronization engaging portions 52 provided on the movable body 51 so that the synchronization engaged portion 30 of each of the front and rear movable bodies 14a and 14b can be engaged and disengaged in the vertical direction. And a movable body driving means 53 that moves the movable body 51 synchronously by a predetermined distance in the transport direction of the slat conveyor 7 and then moves backward to the home position.

  In carrying out the present invention having the above-described configuration, specifically, as described in claim 2, the movable body 51 of the synchronization means 10 includes the upper forward path portion 7a and the lower backward path portion 7b of the slat conveyor 7. The left and right ends of the movable body 51 are disposed so as to protrude from the left and right sides of the slat conveyor 7 in the space between the movable body 51 and the synchronizing engagement portions 52 are provided at the left and right ends of the movable body 51. Can do.

  According to a third aspect of the present invention, the synchronized engaged portion 30 of the lifting and lowering conveying means 9 is provided with a horizontal axis roller 29, and the synchronizing engagement portion 52 of the synchronizing means 10 is provided with the horizontal axis roller. 29 can be constituted by a pair of rail members 56a and 56b forming a guide groove portion 56 that is fitted so as to be movable up and down.

  Furthermore, as described in claim 4, the movable body drive means 53 of the synchronization means 10 is switchable between a standing posture for boosting the attachment 57 provided on the slat conveyor 7 and a retracting posture for disengaging from the attachment 57. A pusher 58 provided on the movable body 51 and an actuator that can be switched between a biased state that biases the movable body 51 in the conveying direction of the slat conveyor 7 and a retreat drive state that moves the movable body 51 backward to the home position ( Cylinder unit 59).

  Further, as described in claim 5, the support for supporting the front end portions of the front and rear moving bodies 14a and 14b in a state of being moved forward in the conveying direction of the slat conveyor 7 with respect to the elevating bodies 12a and 12b reaching the lower limit position. Means 69 can be provided on the floor side. Specifically, as described in claim 6, the support means 69 includes a horizontal axis roller 71, and the horizontal axis roller 71 is in contact with the front end portions of the front and rear moving bodies 14a and 14b. A moving belt-like plate 72 can be laid along the front-rear direction.

  When the object to be transported is an automobile body W having wheels, the front wheel positioning attachments 68a and 68b for positioning the front wheel fw of the automobile body W are attached to the slat conveyor 7 as described in claim 7. The transport object supporting tools of the lifting and lowering conveying means 9 are provided corresponding to the respective wheels fw and rw of the automobile body W, and these transport object supporting tools are respectively provided with a pair of horizontally openable / closable wheel support arms (front wheel support arm 31a). , 31b and rear wheel support arms 33a, 33b), and the transported object support tool (rear wheel support arms 33a, 33b) for supporting the rear wheel rw of the vehicle body W is provided with the front wheel fw of the vehicle body W. It can be provided such that its position can be adjusted in the front-rear direction with respect to the supported object support (front wheel support arms 31a, 31b) to be supported.

  According to the lifting / lowering transfer apparatus according to the present invention having the configuration described in claim 1 above, the pair of left and right lifting bodies of the lifting and lowering conveying means is lifted by lifting the conveyed object suspended and conveyed by the hanger of the trolley conveyor. The pair of left and right moving objects at the home position are received by the object support tool, and the pair of left and right lifting bodies are lowered to lower the object to be conveyed on the slat conveyor. Before moving to the left and right pair of front and rear movable bodies and the movable body on the home position, the pair of left and right front and rear movable bodies and movable bodies are In this state, the movable body is moved synchronously in the conveying direction of the slat conveyor by the movable body driving means, and the lifting and lowering bodies (a pair of left and right front and rear moving bodies) of the lifting and lowering conveying means in the meantime are lowered. Accordingly, it is possible to lower the transported object which is supported via a conveyed object support the pair of front and rear movable body on the slat conveyor. Thereafter, the lifting body is raised in a state in which the object support tool is switched to the retracted position, and the pair of left and right front and rear moving bodies on the side of the synchronization is separated from the synchronization engagement section on the side of the movable body. At the same time, the series of transfer operations can be completed by moving each of the front and rear moving bodies back to the home position by the return driving means and moving the movable body back to the original home position by the movable body driving means.

  Thus, according to the lifting / lowering transfer apparatus according to the present invention having the configuration described in claim 1, the movable body installed on the slat conveyor side is synchronized with the front / rear moving body on the lifting / lowering conveying means side. Means for synchronously moving the forward / backward moving body in the conveying direction of the slat conveyor via the synchronizing engaging portion that engages with the portion, and the transferred object received from the lifting / lowering conveying means like a conventional synchronous carriage It is not intended to support the object and transfer it synchronously with the slat conveyor. Therefore, the movable body does not need a load-bearing performance suitable for the object to be conveyed, and can be configured to be small and light. It is unnecessary. In other words, according to the configuration of the present invention, a pair of left and right lifting bodies originally provided in the lifting and lowering conveying means supports the object support tool via the front and rear moving body, so that the conventional synchronous carriage is partially used in the lifting and lowering conveying means. Since the control system is also used, the control system is simplified and the cost can be greatly reduced. Moreover, when the object to be conveyed is lowered onto the slat conveyor by the lifting / lowering conveying means, the object to be conveyed is lowered on the slat conveyor while being synchronously transferred in the conveying direction of the slat conveyor. Compared with the case where the transferred object is transferred, and then the transferred object is lowered onto the slat conveyor while being synchronously transferred in the conveying direction of the slat conveyor, the transfer of the transferred object onto the slat conveyor is completed. The time required, that is, the cycle time can be shortened.

  According to the configuration of the second aspect, the space between the upper forward path portion and the lower backward path portion of the slat conveyor is utilized as the forward / backward movement path of the movable body of the synchronization means, A pair of left and right synchronization engaging portions that are respectively engaged with the pair of left and right front and rear movable body-side synchronization engaged portions can be easily disposed, and the present invention can be easily implemented. .

  Further, according to the configuration of claim 3, the moving operation of the slat conveyor is performed smoothly by the movable body on the synchronization means side while the forward / backward moving body on the lifting / lowering means side is lowered by the lifting / lowering body. be able to. Furthermore, according to the structure of Claim 4, the attachment provided in the slat conveyor side is clamped by a pair of front and rear open / close clamping pieces provided on the movable body side, and the movable body is synchronized with the transport direction of the slat conveyor. Compared with the case of moving, it is not necessary to act on the slat conveyor side as a load by the front and rear moving body on the lifting and lowering conveying means supporting the object to be conveyed. Accordingly, it is not necessary to increase the capacity of the driving means of the slat conveyor and to reinforce the slat alone to which the attachment is attached, and the attachment attached to the slat conveyor can be made compact.

  Furthermore, according to the structure of Claim 5, when transferring a to-be-conveyed object on a slat conveyor, the front-back moving body which supports a to-be-conveyed object is cantilevered from the raising / lowering body to the conveyance direction front of a slat conveyor. Even in such a situation, the front end of the front / rear moving body can be supported by the floor-side support means, so that the lifting body can be configured with a minimum required width in the front / rear direction. In addition, the back-and-forth movement of the back-and-forth moving body before and after the transfer of the transported object can be smoothly and smoothly performed. In this case, according to the structure of Claim 6, compared with the case where a horizontal axis roller is provided in the back-and-forth moving body side and the floor-side support means is formed of a rail-like member that is long in the front-rear direction, it is longer in the front-rear direction. Since a long belt-like plate in the front-rear direction can be easily attached to the front and rear movable body side, the configuration of the entire support means can be implemented simply and inexpensively.

  In the case where the object to be conveyed is an automobile body provided with wheels, according to the configuration of claim 7, various wheel-based automobiles can be obtained simply by making the transfer position of the front wheel on the slat conveyor constant. The car body can be handled without problems. In addition, since the wheels are supported by a pair of horizontally openable and closable wheel support arms, the lower limit position of the elevating body on the elevating and conveying means side can be lowered as long as the wheel support arms do not contact the slat conveyor. In other words, as in the case of using a pair of wheel support arms that can move right and left sideways, it is not necessary to lower the wheel support arm after the wheels have been transferred onto the slat conveyor and pull it out sideways. The distance between the pair of wheel support arms can be sufficiently narrowed so that even a small-diameter wheel can be supported without any problem.

  A specific embodiment of the present invention will be described below with reference to the accompanying drawings. In FIGS. 1 to 3, 1 is a conventionally known trolley conveyor that suspends and conveys an automobile body W, and is installed on the ceiling side. Conveying traveling body 4 movably supported on guide rail 2 via a plurality of trolleys 3 and a conveyor chain (not shown) with a pusher for propelling this traveling traveling body 4 is used for transportation. A hanger 5 that suspends the vehicle body W is suspended from the traveling body 4. As is conventionally known, the hanger 5 includes a pair of left and right hanger arms 6 that can be opened and closed. These hanger arms 6 allow the left and right sides of the vehicle body to be located between the front wheel fw and the rear wheel rw of the vehicle body W. Support.

  Reference numeral 7 denotes a slat conveyor, which is installed on the floor surface immediately below the trolley conveyor 1 so that the conveying directions of both conveyors are the same and parallel to each other. The lifting / lowering transfer device 8 of the present invention is provided between the starting end portion of the transport path of the slat conveyor 7 and the trolley conveyor 1 immediately above it. The lifting / lowering transfer device 8 includes a lifting / lowering conveying means 9 and a synchronizing means 10. The elevating / conveying means 9 includes a pair of left and right elevating bodies 12a and 12b supported by a pair of left and right columns 11a and 11b erected on the left and right sides of the slat conveyor 7, and both the elevating bodies 12a and 12b. And a pair of left and right front and rear moving bodies 14a and 14b supported on each of the elevating bodies 12a and 12b so as to be movable back and forth in parallel with the conveying direction of the slat conveyor 7, Front wheel support means 15 and rear wheel support means 16 provided on the bodies 14a, 14b are provided.

  The elevating bodies 12a and 12b are fitted to the support pillars 11a and 11b from the upper side of the slat conveyor 7 and engage with the elevating guide rails 17 attached to the support pillars 11a and 11b so as to freely move up and down. A support base 18 for supporting the front and rear moving bodies 14a and 14b is provided on the inner side. As shown in FIG. 2, the elevating drive means 13 includes a motor-driven drive wheel 19 disposed adjacent to one column 11b, three suspension chains 20-22, and each column 11a, 11b. It comprises a plurality of guide wheels 23 that are pivotally supported by the upper end and guide the suspension chains 20 to 22 and counterweights 24a and 24b that move up and down in the columns 11a and 11b. The suspension chains 20 and 21 are stretched over the drive wheel 19 and the counterweight 24b is suspended at one end thereof. The other end of the suspension chain 20 suspends the lifting body 12a and the other end of the suspension chain 21 is the lifting body. 12b is suspended, and the suspension chain 22 suspends the elevating body 12a at one end and the counterweight 24a at the other end. Therefore, by driving the suspension chains 20 and 21 with the drive wheels 19, the lifting bodies 12a and 12b can be moved up and down synchronously. At this time, the counterweights 24a and 24b move up and down in the columns 11a and 11b in the direction opposite to the lifting bodies 12a and 12b.

  As shown in FIGS. 5 and 6, the front and rear moving bodies 14 a and 14 b include a guide rail 25 attached to the bottom in parallel to the front and rear moving direction, and the elevating bodies 12 a and 14 b so as to be fitted to the guide rail 25. 12b and a slide guide 26 attached on the support base 18b, in a plan view, can be moved horizontally and longitudinally in parallel with the conveying direction of the slat conveyor 7 at positions on both left and right sides of the slat conveyor 7 in plan view (see FIG. 3). It is supported by the elevating bodies 12a and 12b. These forward / backward moving bodies 14a, 14b are within the moving range S (see FIG. 3) between the home position shown in FIGS. 3A and 5 and the forward position shown in FIGS. The front and rear moving bodies 14 a and 14 b that have moved to the forward movement position are returned to the home position by the return drive means 27. The return drive means 27 is composed of a cylinder unit 28 interposed between the lower side of the front ends of the front and rear moving bodies 14 a and 14 b and the front side of the support base 18. Further, at the rear ends of the front and rear moving bodies 14a and 14b, a synchronized engaged portion 30 including a horizontal axis roller 29 supported by a horizontal axis in the left-right direction is projected.

  The front wheel support means 15 provided on the front end side on the front and rear moving bodies 14a and 14b includes a pair of front and rear front wheel support arms 31a and 31b that can be opened and closed in the horizontal direction as a transported object (front wheel) support tool, and the front wheel support arm. 31a, 31b opening / closing drive means 32, and rear wheel support means 16 provided on the rear end side on the front and rear moving bodies 14a, 14b is a front and rear that can be opened and closed horizontally as a transported object (front wheel) support tool. To adjust the position of the pair of rear wheel support arms 33a, 33b, the opening / closing drive means 34 of the rear wheel support arms 33a, 33b, and the rear wheel support arms 33a, 33b in the front-rear direction parallel to the conveying direction of the slat conveyor 7. The position adjusting means 35 is provided.

  More specifically, as shown in FIG. 10, the front wheel support arms 31a and 31b are pivotally supported by the vertical support shafts 36a and 36b on the front and rear moving bodies 14a and 14b so as to be openable and closable in the horizontal direction. 32, a pair of spur gears 37a, 37b interlocked with the front wheel support arms 31a, 31b via vertical support shafts 36a, 36b, and a pair of spur gears 37a, 37b engaged with the spur gears 37a, 37b. The retractable moving body 39 provided with the rack gears 38a and 38b and a power cylinder 40 for driving the retractable moving body 39 to the retractable movement are configured. By moving the retractable moving body 39 with the power cylinder 40, the rack gear is moved. The front wheel support arms 31a and 31b are rotated in the opposite directions by a predetermined angle via 38a and 38b and spur gears 37a and 37b. The front wheel support arms 31a and 31b can be opened and closed between a wheel support posture (closed posture) protruding in the upper position of the slat conveyor 7 in a parallel posture indicated by a solid line and a retracted posture (open posture) indicated by a virtual line. it can.

  As shown in FIG. 11, the rear wheel support arms 33a and 33b are pivotally mounted on a base 41 supported on the front and rear moving bodies 14a and 14b so that the base portions can be opened and closed horizontally by vertical support shafts 42a and 42b, respectively. The open / close driving means 34 is provided on the base 41, and is coupled to the rear wheel support arms 33a and 33b via the vertical support shafts 42a and 42b and meshes with a pair of spur gears 43a. 43b, a driving spur gear 44 attached to one of the vertical support shafts 42b, a retracting / moving body 46 having a rack gear 45 meshing with the driving spur gear 44, and the retracting / moving body 46 It consists of a power cylinder 47 that retreats and a backup roller 48 that sandwiches the retractable moving body 46 between the drive spur gear 44, and the retractable moving body 46 is retracted and retracted by the power cylinder 47. By moving the rear wheel support arms 33a and 33b through the rack gear 45, the drive spur gear 44, and the spur gears 43a and 43b, the rear wheel support arms 33a and 33b are rotated by a predetermined angle in opposite directions to each other, and the slat conveyor 7 is in a parallel posture shown by solid lines The rear wheel support arms 33a and 33b can be opened and closed between a wheel support posture (closed posture) projecting upward and a retracted posture (open posture) indicated by a virtual line. Further, the position adjusting means 35 includes a guide rail 49 that supports the base 41 movably in the front-rear direction parallel to the conveying direction of the slat conveyor 7 on the front-rear moving bodies 14a, 14b, and the base 41 is moved back and forth. The power cylinder 50 is interposed between the bodies 14a and 14b, and the power cylinder 50 adjusts the position of the base 41 (rear wheel support means 16) in the front-rear direction within the adjustment range D shown in FIG. Thus, the distance between the front wheel support means 15 and the rear wheel support means 16 can be adjusted according to the distance between the front wheel fw and the rear wheel rw in the vehicle body W to be handled, that is, the wheel base.

  The synchronizing means 10 will be described. As shown in FIGS. 1, 2, and 4, the synchronizing means 10 includes a movable body 51 that can move horizontally and back and forth along the conveying direction of the slat conveyor 7, and each of the front and rear moving bodies 14a. , 14b of the horizontal axis roller 29 (synchronized engaged portion 30) is provided with a pair of left and right synchronizing engagement portions 52 provided on the movable body 51 so as to be freely disengageable in the vertical direction, and the movable body 51 is slatted. A movable body driving means 53 is provided for moving the conveyor 7 in the conveying direction of the conveyor 7 a predetermined distance synchronously and then moving backward to the home position. The movable body 51 is disposed in the space between the upper forward path portion 7a and the lower backward path portion 7b at the transport path start end portion of the slat conveyor 7, and both left and right end portions protrude from the slat conveyor 7 to the left and right sides. Similarly, the left and right ends of the slat conveyor 7 are connected to the guide rails 55 laid on the left and right ends of the pedestal 54 installed on the floor so that the left and right ends protrude from the slat conveyor 7 to the left and right sides. It is supported so as to be movable horizontally back and forth along the transport direction. The pair of left and right synchronization engaging portions 52 are provided on both left and right ends projecting from the slat conveyor 7 of the movable body 51 to the left and right sides, and the guide groove portion into which the horizontal axis roller 29 is fitted up and down freely. A pair of front and rear rail members 56a and 56b that form 56 are formed in a vertical rail shape, and the upper end portion of the guide groove portion 56 is formed so that the width in the front-rear direction increases toward the top.

  As shown in FIG. 12, the movable body driving means 53 has an upright posture for pushing up the attachments 57 projecting on the back side of the slats 7 c located at predetermined intervals of the slat conveyor 7, and a retracted posture for releasing from the attachments 57. Cylinder unit as an actuator that can be switched between a pusher 58 that can be switched to a movable state, a biased state that biases the movable body 51 in the conveying direction of the slat conveyor 7 and a retreat drive state that moves the movable body 51 back to the home position. 59. As shown in FIGS. 7 and 9, the pusher 58 is a vertical swing supported on a front end portion of a pair of left and right guide rails 60 installed on the movable body 51 by a left and right horizontal support shaft 61 so as to be vertically raised and lowered. It protrudes upward from the free end of the moving body 62. The pusher 58 (vertical rocking body 62) is switched by the posture switching means 63 between the lying down and retracting posture shown in FIG. 7A and the standing posture shown in FIG. 7B. A cam 65 supported by a roller 64 so as to be movable in the front-rear direction, a cylinder unit 66 for reciprocating the cam 65 in the front-rear direction, and a cam follower roller 67 pivotally supported at the lower free end of the vertical swing body 62 When the cam 65 is moved forward by the cylinder unit 66, the cam driven roller 7 rides on the cam 65 and the pusher 58 (vertical rocking body 62) is switched to the standing posture shown in FIG. The cam driven roller 7 is lowered from above the cam 65 by moving the cam 65 backward by the Over 58 (vertical oscillator 62) is switched to the collapsed retracted position shown in Figure 7A. The pusher 58 that has been switched to the standing posture protrudes into the movement path of the attachment 57 on the slat conveyor 7 side, and the pusher 58 that has been switched to the lying down retracted position is released downward from the movement path of the attachment 57.

  Hereinafter, the usage and operation of the lifting / lowering transfer device 8 having the above-described configuration will be described. The transport traveling body 4 of the trolley conveyor 1 is controlled, and the vehicle body W suspended by the hanger 5 is transferred to the lifting / lowering transport means 9. Stop at the fixed position. In this state, the lifting and lowering bodies 12a and 12b of the lifting and lowering conveying means 9 are raised by the lifting and lowering driving means 13. At this time, the front and rear moving bodies 14a and 14b of the lifting and lowering conveying means 9 are driven to return as shown in FIGS. As shown in FIG. 3A, the front wheel support arms 31a and 31b of the front wheel support means 15 and the rear wheel support arms 33a and 33b of the rear wheel support means 16 are retracted to the home position by the means 27 (cylinder unit 28). The opening / closing drive means 32 and 34 are switched to a wheel support posture projecting above the slat conveyor 7 in a posture parallel to each other. In this state, the elevating bodies 12a and 12b are lifted so that the front wheel support arms 31a and 31b and the rear wheel support arms 33a and 33b in the wheel support posture are stopped in a state where they are suspended by the hangers 5. Since the front wheel fw and the rear wheel rw are lifted and the vehicle body W is lifted from the hanger 5, the lifting of the elevating bodies 12a and 12b is stopped in a state where the vehicle body W is lifted from the hanger 5 to a predetermined height.

  Next, after the hanger arm 6 of the hanger 5 is moved outward from the lowering path of the vehicle body W, the elevating bodies 12a and 12b of the elevating / conveying means 9 are lowered by the elevating drive means 13, and the front wheel support means 15 and the rear wheel are lowered. The vehicle body W supported by the support means 16 via the front wheel fw and the rear wheel rw is lowered. On the other hand, the movable body 51 of the synchronizing means 10 is in a position retracted to the home position by the cylinder unit 59, and when the elevating bodies 12a and 12b are lowered in such a state, as shown in FIG. When the rear wheel rw reaches a position higher than the support surface of the slat conveyor 7 by a predetermined height, the synchronized engaged portions of the front and rear moving bodies 14a and 14b positioned at the home positions on the lifting bodies 12a and 12b. 30 (horizontal axis roller 29) is fitted in the guide groove portion 56 of the synchronizing engagement portion 52 on the movable body 51 side. At this time, one of the attachments 57 provided at predetermined intervals on the slat conveyor 7 side has reached directly above the pusher 58 in the lying and retracting posture of the movable body 51 in the home position. In other words, the elevating bodies 12a and 12b are lowered at the timing when the attachment 57 passes through the predetermined position so that the attachment 57 and the pusher 58 have the above positional relationship.

  As described above, the synchronized engaged portion 30 (horizontal axis roller 29) is fitted in the guide groove portion 56 of the synchronizing engagement portion 52 on the movable body 51 side, and one of the attachments 57 on the slat conveyor 7 side is overlaid. When the pusher 58 reaches the position immediately above the pusher 58 in the retracted posture, the posture switching means 63 is operated to switch to the standing posture as shown in FIG. 7, and the cylinder unit 59 shown in FIG. When fluid pressure is supplied to the movable body 51 to urge the movable body 51 in the conveying direction of the slat conveyor 7 and the pusher 58 in the standing posture is moved forward at a speed faster than the conveying speed of the slat conveyor 7, the pusher 58 is moved to the slat conveyor. The movable body 51 is brought into contact with the rear side surface of the attachment 57 on the 7 side, and the slat conveyor via the attachment 57 and the pusher 58. It will follow the forward movement at a conveying speed and same speed. As a result, before and after the lifting and lowering conveying means 9 in an interlocked state with respect to the conveying direction of the movable body 51 and the slat conveyor 7 via the synchronized engaged portion 30 (horizontal axis roller 29) fitted to the synchronizing engagement portion 52. The moving bodies 14a and 14b move forward in the conveying direction of the slat conveyor 7 on the elevating bodies 12a and 12b in synchronization with the slat conveyor 7 while descending integrally with the elevating bodies 12a and 12b. At this time, the cylinder unit 28 which is the drive means 27 for returning the front and rear moving bodies 14a and 14b is switched to the free state, and the front and rear moving bodies 14a and 14b are interlocked with the movable body 51 (slat conveyor 7). It can move forward on the elevating bodies 12a and 12b without any trouble.

  Therefore, the front wheel wf and the rear wheel rw supported by the front and rear moving bodies 14a and 14b via the front wheel support arms 31a and 31b and the rear wheel support arms 33a and 33b, that is, the vehicle body W, are the same as the slat conveyor 7. Since it descends while moving forward in the conveying direction at a speed, when viewed from the side of the automobile body W, it is the same as descending on the stopped slat conveyor 7. Thus, as the elevating bodies 12a and 12b descend, the front wheel wf and the rear wheel rw of the automobile body W are transferred onto the support surface of the slat conveyor 7, as shown in FIG. The front wheel support arms 31a and 31b and the rear wheel support arms 33a and 33b that support the wheels fw and rw are provided on both the front and rear sides of the peripheral surface contact portion of the wheels fw and RW with respect to the slat conveyor 7. Since the front wheel support arms 31a and 31b and the rear wheel support arms 33a and 33b support the slat conveyor 7 as the elevating bodies 12a and 12b are lowered. The descent of the elevating bodies 12a and 12b is automatically stopped before being pressed downward on the surface. At this time, the level of the front and rear moving bodies 14a and 14b is the lower limit position of the elevating bodies 12a and 12b. Accordingly, after this, the front and rear moving bodies 14a and 14b move forward together with the movable body 51 in synchronization with the slat conveyor 7, so that the movable body 51 and the front and rear moving bodies 14a and 14b reach the forward limit position. 3B and FIG. 6, the front wheel support arms 31a and 31b and the rear wheel support arms 33a and 33b are retracted from the wheel support position (closed position) to the retracted position (closed position) by these opening / closing drive means 32 and 34. After switching to the open position, the supply of fluid pressure to the cylinder unit 59 that has urged the movable body 51 in the conveying direction of the slat conveyor 7 is stopped, and the pusher 58 is lowered from the standing position to the lying position by the position switching means 63. And the movable body 51 and the front and rear moving bodies 14a and 14b are stopped.

  As is apparent from the above operation, the support position of the front wheel fw of the automobile body W on the slat conveyor 7 is determined at a position ahead of the attachment 57 by a certain distance. As shown in FIGS. 12 and 13, a pair of front and rear front wheel positioning attachments 68a and 68b for positioning the front wheel fw with respect to the conveying direction of the slat conveyor 7 are provided. be able to. In this case, the front wheel positioning attachments 68a and 68b are located inside the front wheel support arms 31a and 31b in the wheel support posture (closed posture) supporting the front wheels fw so as not to interfere with the front wheel support arms 31a and 31b. Should be arranged as follows.

  When the vehicle body W is transferred onto the slat conveyor 7, as shown in FIG. 6, the front and rear moving bodies 14a and 14b move in the conveying direction of the slat conveyor 7 with respect to the lifting bodies 12a and 12b. As shown in FIGS. 4 to 6, the front and rear moving bodies 14a and 14b when the elevating bodies 12a and 12b reach the descending limit position, as shown in FIGS. Support means 69 for receiving the front end portion extending forward from the support base 18 can be installed on the floor side. The support means 69 is composed of a pair of left and right horizontal axis rollers 71 pivotally supported by left and right horizontal axes on a stand 70 erected on the floor side as shown in the figure, and the front ends of the front and rear moving bodies 14a and 14b. A belt-like plate 72 is laid along the front-rear direction on the lower side, and when the front and rear moving bodies 14a, 14b that have reached the lower limit position move forward, the horizontal shaft roller 71 contacts the lower surface of the belt-like plate 72. And can be configured to roll.

  When the automobile body W has been transferred to the predetermined position on the slat conveyor 7 as described above, the movable body 51 in the forward limit position is moved to the fluid in the backward drive direction with respect to the cylinder unit 59 of the movable body driving means 53. Retreat to the home position by supplying pressure. As a result, the front and rear moving bodies 14a on the side of the elevating bodies 12a and 12b that are in an interlocking state with respect to the front-rear direction via the movable body 51, the synchronized engaged portion 30 (horizontal axis roller 29), and the synchronizing engagement portion 52 , 14b also move backward from the forward limit position to the home position in conjunction with the movable body 51. At this time, the support means 69 supports the front end portions of the front and rear moving bodies 14a and 14b extending forward with respect to the support base 18 on the side of the elevating bodies 12a and 12b in the entire stroke of the front and rear moving bodies 14a and 14b. Will do. When the movable body 51 and the front and rear movable bodies 14a and 14b return to the original home position, the elevating bodies 12a and 12b are raised by the elevating drive means 13, and the front and rear positions located at the home position with respect to the elevating bodies 12a and 12b. The moving bodies 14a, 14b can be stopped, for example, at an intermediate standby level below the receiving level of the vehicle body W from the trolley conveyor 1 side, and can be prepared for the next transfer operation. In the ascending process of the elevating bodies 12a and 12b, the synchronized engaged portion 30 (the horizontal axis roller 29) on the front and rear movable bodies 14a and 14b is moved upward from the guide groove portion 56 of the synchronizing engagement portion 52 on the movable body 51 side. Leave.

It is a vertical side view which shows the use condition of a raising / lowering transfer apparatus in the state which the raising / lowering conveyance means exists in intermediate | middle height. It is a vertical rear view in the same state. Fig. A is a cross-sectional plan view when the front-rear moving body of the elevating and conveying means is at the home position, and Fig. B is a cross-sectional plan view when the front-rear moving body of the elevating and conveying means is at the advanced position. Fig. A is a plan view when the movable body of the synchronizing means is at the home position, and Fig. B is a plan view when the movable body is at the advanced position. It is a vertical side view in the state where the back-and-forth moving body of the elevating and conveying means started to engage with the synchronizing means. It is a vertical side view which shows the state which the front-back moving body of the raising / lowering conveying means moved to the advance position by synchronizing with the slat conveyor by the synchronizing means. Fig. A is a side view of the main part showing a state where the synchronizing means is not linked to the slat conveyor, and Fig. B is a side view of the main part showing a state where the synchronizing means is linked to the slat conveyor. It is a rear view which shows the principal part of the raising / lowering transfer apparatus in the state in which the synchronization means was linked with the slat conveyor. It is a top view which shows the principal part of a synchronization means. It is a top view which shows the front wheel support means of a raising / lowering conveyance means. It is a top view which shows the rear-wheel support means of a raising / lowering conveyance means. It is action | operation explanatory drawing of the principal part which shows the state immediately before a synchronization start. It is action | operation explanatory drawing of the principal part which shows the state immediately before completion | finish of a synchronization.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Trolley conveyor 4 Conveyance traveling body 5 Hanger 7 Slat conveyor 8 Elevating transfer device 9 Elevating / conveying means 10 Synchronizing means 11a, 11b Struts 12a, 12b Elevating body 13 Elevating drive means 14a, 14b Front and rear moving body 15 Front wheel support means 16 Wheel support means 18 Support base 25, 49, 55, 60 Guide rail 27 Return drive means 28, 59, 66 Cylinder unit 29 Horizontal axis roller 30 Synchronized engaged parts 31a, 31b Front wheel support arms 32, 34 Open / close drive means 33a, 33b Rear wheel support arm 35 Position adjustment means 40, 47, 50 Power cylinder 51 Movable body 52 Engaging portion for synchronization 53 Movable body drive means 56 Guide groove portion 56a, 56b Rail member 57 Attachment 58 Pusher 62 Vertical rocking body 63 Posture Switching means 65 Cam 67 Cam driven roller 68 , 68b wheel positioning attachment 69 supporting means 71 horizontal axis roller 72 strip-shaped plate W automobile body fw front rw rear wheel

Claims (7)

  A lifting / lowering transfer device for transferring an object to be conveyed suspended by a hanger of a trolley conveyor onto a slat conveyor, comprising lifting / lowering conveying means and synchronization means, and the lifting / lowering conveying means is conveyed on the slat conveyor. A pair of left and right lifting bodies that are arranged side by side so as to sandwich the path and move up and down in synchronization with each other, and a pair of left and right back and forth movements supported by these lifting bodies so as to be horizontally movable back and forth along the conveying direction of the slat conveyor A body, a supported object support provided on each of the front and rear moving bodies so as to be switchable between a supported position and a retracted position, and each of the front and rear movable bodies up to a home position in a direction opposite to the conveying direction of the slat conveyor. A drive unit for returning to be moved backward, and an engaged portion for synchronization provided in each of the front and rear moving bodies, and the synchronizing unit is movable in the horizontal direction back and forth along the conveying direction of the slat conveyor. A moving body, a pair of left and right synchronizing engagement portions provided on the movable body so that the engaged portions for synchronization of the respective front and rear moving bodies can be engaged and disengaged in the vertical direction, and the movable body in the conveying direction of the slat conveyor An elevating / lowering transfer device comprising a movable body driving means for moving back and forth to a home position after synchronously moving a predetermined distance.   The movable body of the synchronizing means is disposed in the space between the upper outgoing path portion and the lower backward path portion of the slat conveyor so that the left and right ends of the movable body protrude on the left and right sides of the slat conveyor. The lifting / lowering transfer apparatus according to claim 1, wherein the synchronization engaging portions are provided at both left and right ends of the movable body.   The synchronized engaged portion of the lifting and lowering conveying means includes a horizontal axis roller, and the synchronizing engagement portion of the synchronizing means includes a pair of rail members that form a guide groove portion into which the horizontal axis roller fits up and down. The lifting / lowering transfer apparatus according to claim 1 or 2.   The movable body drive means of the synchronization means is configured to switch between a standing posture for pushing the attachment provided on the slat conveyor and a retracted posture to be detached from the attachment, and a pusher provided on the movable body, and transporting the movable body to the slat conveyor. The lifting / lowering transfer apparatus according to any one of claims 1 to 3, further comprising an actuator that is switchable between a biasing state that biases in a direction and a backward driving state in which the movable body is moved backward to a home position. .   The support means which supports the front-end part of the front-and-back moving body of the state which moved forward in the conveyance direction of the slat conveyor with respect to the raising / lowering body which reached the descent limit position is provided in the floor side. The lifting / lowering transfer apparatus according to Item 1.   The up-and-down movement according to claim 5, wherein the support means includes a horizontal axis roller, and a belt-like plate on which the horizontal axis roller abuts and rolls is laid along the front-rear direction at a front end portion of the front-rear moving body. Mounting device.   The object to be conveyed is an automobile body provided with wheels, and the slat conveyor is provided with a front wheel positioning attachment for positioning the front wheel of the automobile body, and the object support of the elevating and conveying means is attached to each wheel of the automobile body. It is provided correspondingly, each provided with a pair of horizontally openable / closable wheel support arms and supporting a rear wheel of an automobile body. The lifting / lowering transfer apparatus according to claim 1, wherein the lifting / lowering transfer apparatus is provided so that the position thereof can be adjusted in the front-rear direction.

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