JP2006176085A - Suspension conveying device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enhance an on-floor surface utilization efficiency under a movement space of an empty hanger for supporting a baggage in a suspension conveying device provided with the hanger for supporting the baggage at a lower side of a lifting body liftably suspended from a conveying traveling body. <P>SOLUTION: In the suspension conveying device provided with the hanger 33 for supporting the baggage at a lower side of the lifting body 14 liftably suspended from the conveying traveling body 5, the hanger 33 for supporting the baggage is vertically expandably/contractably constituted such that it can be switched to the whole height expansion state capable of supporting the baggage at a lower side of the lifting body 14 by lower end baggage support units 35a, 35 and to the whole height contraction state in which the lower end support units 35a, 35b approach to the lower side of the lifting body 14 and a baggage supporting hanger expansion/contraction driving means 36 for switching it to both states is provided together. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a suspended conveying device in which a load supporting hanger is provided on the lower side of a lifting body suspended from a traveling body for transportation.

  This type of suspended transfer device lowers the load support hanger to the level of loading and unloading the object to be transported by lowering the lifting body from the transport traveling body when unloading the object to be loaded on the load support hanger. When transporting an object to be transported, the lifting body is raised to the upper limit height, and the load supporting hanger is raised to a transport level directly below the transport traveling body.

In such a suspended conveying device, the traveling level of the conveying traveling body is not changed between the conveying path for conveying the object to be conveyed and the return path on which the conveying traveling body travels while the load supporting hanger is empty. If it can be arranged in parallel, as disclosed in Patent Document 1, than the case where the return path is arranged on the upper side of the transport path, the turn path connecting both paths can be simply configured as a horizontal turn path. The turn path can be easily implemented regardless of the propulsion mechanism of the transport traveling body.
JP 2003-341818 A

  However, if the empty load support hanger is simply lifted to the transport level on the return path, the lower end level of the empty load support hanger movement space on the return path is equal to the movement space of the load support hanger on the transport path. It becomes the same as the lower end level, and the utilization efficiency on the floor surface under the moving space of the empty load support hanger on the return path cannot be increased.

  Thus, when the load supporting hanger is empty, it is conceivable to configure the lower end level of the load supporting hanger so that it can be further raised with respect to the lifting body. For example, the configuration as described in Patent Document 1, that is, By adopting a configuration in which the empty load support hanger is tilted rearward and the lower end level of the load support hanger is increased, the object to be transported is loaded on the load support hanger in the transport path. Not only does the load support hanger need to be securely locked so that it does not swing back and forth, but the overall length of the transport traveling body including the empty load support hanger increases in the travel direction, which also adversely affects storage. Result.

  An object of the present invention is to provide a suspended conveying device that can solve the above-described conventional problems. When the means is shown with reference numerals of embodiments to be described later, The load carrying hanger 33 is provided on the lower side of the elevating body 14 suspended from the traveling body 5 so as to be movable up and down, and the load supporting hanger 33 has a lower end load support 35a. , 35b can be switched between a full height extended state in which a load can be supported on the lower side of the elevating body 14 and a full height reduced state in which the lower end load support tools 35a, 35b approach the lower side of the elevating body 14 so as to be vertically stretchable. The load supporting hanger expansion / contraction driving means 36 for switching between these two states is provided.

  In carrying out the present invention having the above-described configuration, specifically, as described in claim 2, lower load support tools 35a and 35b of the load support hanger 33 are hanger main bodies 34a supported by the elevating body 14. , 34b is supported by lower ends of elevating rods 40a, 40b that are linearly guided by elevating guides 39a, 39b. The load supporting hanger telescopic drive means 36 is connected to the hanger bodies 34a, 34b and the load. An electric telescopic cylinder 42 interposed between the support tools 35a and 35b can be used.

  According to a third aspect of the present invention, the hanger bodies 34a and 34b of the load support hanger 33 are arranged in parallel with each other so that the hanger bodies 34a and 34b can be opened and closed with respect to the elevating body 14. Supporting tools 35a and 35b and load supporting hanger telescopic drive means 36 can be provided.

  According to the suspended conveyance device of the present invention having the above-described configuration, when unloading the object to be conveyed, the lifting body is lowered with respect to the conveyance traveling body and the load supporting hanger is lowered to the unloading level of the object to be conveyed, When transporting a loaded transported object, it is possible to raise the lifting body relative to the transport traveling body and raise the load support hanger to the transport level, but the load support hanger is empty. For example, when the transporting traveling body travels on the return path, the load supporting hanger is extended and retracted so that the lower load supporting tool approaches the lower side of the lifting body so that the lower end load supporting tool is in a reduced state. By means of vertical reduction, the lower level of the moving space of the empty load support hanger can be raised.

  Therefore, it is possible to increase the utilization efficiency of the space above the floor under the path on which the transport traveling hanger travels in an empty state such as the return path of the transport traveling body, but particularly in the configuration of the present invention. According to the above, the load supporting hanger is vertically expanded and contracted, and even if the overall height of the hanger is reduced, the overall length of the transporting traveling body including the hanger is not increased, and the storage is adversely affected. There is no. In addition, the load support hanger expands and contracts vertically, and it is not necessary to provide a joint part that swings back and forth in the traveling direction on the hanger, and the load supporting hanger has a rigid structure in the traveling direction. In addition, a transporting device for transporting heavy objects such as an automobile body does not require a locking means for stopping the hanger from swinging in the front-rear direction, and can have a sturdy and highly safe structure.

  When the apparatus of the present invention is implemented, by adopting the configuration according to claim 2 or claim 3, a left-side cantilever structure hanger with front-view L-shape and a front portal-portion shape that opens and closes left and right are used. It can be implemented easily and easily as a hanger.

  A specific embodiment of the present invention will be described below with reference to the accompanying drawings. In FIGS. 1 and 2, 1 indicates a transport path, 2 indicates a return path, and both paths 1 and 2 are as shown in FIG. The guide rails 3 and 4 constituting each of the paths 1 and 2 are juxtaposed so as to be adjacent at the same level. Although not shown in the drawing, both paths 1 and 2 are connected so as to form an endless circulation path, and are provided with a required number of transporting traveling bodies 5.

  Each transport traveling body 5 may have any structure, but each transport traveling body 5 shown in the illustrated embodiment includes a main body 6, load trolleys 7 and 8 that suspend both front and rear ends of the main body 6, and the front side The power trolley 9 is connected to the load trolley 7 via a connecting rod 11 and the free trolley 10 is connected to the rear load trolley 8 via a connecting rod 12. The traveling body 5 for conveyance runs along the guide rails 3 and 4 by the rotational drive of the motor-driven power wheel 13 supported by the rails 3 and 4 and provided in the power trolley 9.

  A lifting body 14 is suspended by the pantograph mechanism 15 on the transport traveling body 5 so as to be lifted and lowered, and a lifting drive means 16 is also provided. The pantograph mechanism 15 regulates the elevating body 14 so as to move up and down vertically while maintaining a horizontal posture, and a pair of left and right interlockingly connected between the main body 6 and the elevating body 14 of the transport traveling body 5. As shown in FIG. 5, the pantograph links 17a and 17b are pivotally supported by concentric left and right horizontal support shafts 18 and 19 at the front (or rear) link ends of the upper and lower ends, and the rear (or front sides) of the upper and lower ends. The rollers 20 and 21 that are concentrically supported at the link ends are supported by slide guides 22 and 23 so as to be movable in the front-rear direction. The raising / lowering driving means 16 is integrally driven by a motor 26 through guide wheels 25a-25d pivotally supported on the main body 6 side of the transport traveling body 5 through chains 24a-24d that suspend the four corners of the lifting body 14. The portion between the free ends of the chains 24a to 24d and the quadruple drive wheels 27, which are hung on the continuous drive wheels 27 and locked to the main body 6 side of the transport traveling body 5, is always tensioned by the lifting and lowering take-up means 28. It is configured to be allowed to remain. The lifting / lowering take-up means 28 is used for transporting at the upper position between the lifting / lowering four-way guide wheels 30 and 31 supported by a weight portion 29 urged in the downward direction by gravity and the four-way guiding wheels 30 and 31. It is comprised from the fixed position 4 continuous guide wheel 32 pivotally supported by the main body 6 side of the traveling body 5. FIG.

  Accordingly, when the four-wheel drive wheel 27 is driven to rotate forward in the chain winding direction by the motor 26, the chains 24a to 24d are wound up and the elevating body 14 is raised. At this time, the elevating quadruple guide wheels 30 and 31 are lowered by the urging force acting on the weight portion 29 of the elevating take-up means 28 in accordance with the amount of rolling of each of the chains 24a to 24d from the quadruple drive wheel 27. Each chain 24a to 24d from the drive wheel 27 to the free end is kept at a constant tension. When lowering the elevating body 14, the quadruple drive wheel 27 is reversely driven by the motor 26 in the direction of extending the chain, the chains 24a to 24d are extended from the elevating take-up means 28 side, and the elevating body 14 is lowered by gravity. be able to. At this time, the weight portion 29 of the lift take-up means 28 rises.

  As described above, the load support hanger 33 is suspended on the lower side of the lift body 14 that can be moved up and down with respect to the transport traveling body 5. The load support hanger 33 has a front gate structure that can be freely opened and closed, and includes a pair of left and right hanger bodies 34a and 34b, a pair of left and right load support tools 35a and 35b, and a pair of left and right extension drive means 36. Yes. Each of the pair of left and right hanger bodies 34a, 34b is supported on the left and right sides of the elevating body 14 and is fixed to the front and rear horizontal support shaft 38 that is driven to rotate forward and backward by the motor 37, and the hanger body 34a. , 34b are provided with a pair of front and rear lifting rods 40a, 40b guided linearly by cylindrical lifting guides 39a, 39b. The pair of left and right load supports 35a and 35b are fixed to the lower ends of the pair of front and rear lifting rods 40a and 40b, and are supported so as to be movable up and down with respect to the hanger bodies 34a and 34b. A pair of front and rear load support portions 41 protruding in the direction is provided. The pair of left and right extension / contraction drive means 36 is constituted by an electric extension / contraction cylinder 42 interposed between the hanger bodies 34a and 34b and the load supports 35a and 35b supported by the hanger bodies 34a and 34b. The electric telescopic cylinder 42 has a cylinder main body 42a whose upper end is pivotally connected to the hanger main bodies 34a and 34b, and is mounted so as to be movable up and down with respect to the cylinder main body 42a. The lifting / lowering rod 42b is connected to the supporting shaft 42, and the motor 42c drives a screw mechanism that moves the lifting / lowering rod 42b up and down.

  The load support hanger 33 configured as described above can open and close the pair of left and right load support tools 35a and 35b together with the hanger main bodies 34a and 34b by driving the motor 37 to rotate the horizontal support shaft 38 forward and backward. Further, the load supporting hangers 35a and 35b are lifted with respect to the hanger main bodies 34a and 34b by the reduction drive of the electric telescopic cylinder 42, and as shown by the return path 2 on the left side of FIG. 1B and FIG. 33, the load supporting members 35a and 35b are brought into a state of full height reduction in which the load supporting members 35a and 35b approach the lower side of the elevating body 14, or conversely, the load supporting members 35a and 35b are attached to the hanger main bodies 34a and 34b by the extension drive of the electric telescopic cylinder 41. By lowering, as shown by the conveyance path 1 on the right side of FIGS. 1A and 2, the load supporting hanger 33 can be supported by the load supporting members 35 a and 35 b so that the article W can be supported on the lower side of the lifting body 14. It can be in an extended state.

  In the suspended transfer device configured as described above, when the transfer object W is transferred, the transfer traveling body 5 is stopped at the transfer object loading position set at the start end of the transfer path 1 and the like. As shown in FIGS. 3 and 4, the elevating drive means 16 is operated, the elevating body 14 is lowered vertically while maintaining the horizontal posture by the pantograph mechanism 15, and the load supporting hanger 33 is lowered to the level for unloading the object to be conveyed. . As shown in phantom lines in FIG. 4, the load W hanger 33 is loaded with the pair of left and right load supporters 35 a and 35 b of the load support hanger 33 in a fully extended state as shown in phantom lines in FIG. 4. At the same time, it is moved to the left and right outside with respect to the lifting and lowering body 14, and in this state, the article to be conveyed W is carried into a predetermined position inside the load support hanger 33 at a level higher than the support level by the load support members 35a and 35b. The pair of left and right load support tools 35a and 35b are closed together with the hanger bodies 34a and 34b, and the load support portions 41 of both load support tools 35a and 35b are made to enter the lower sides of the left and right sides of the article W to be conveyed. . Thereafter, the lift drive means 16 is operated, and the lift 14 is lifted vertically while maintaining the horizontal posture by the pantograph mechanism 15, so that the transported object W is scooped up by the pair of left and right load supports 35 a and 35 b. Can do.

  If the article to be transported W is loaded on the load supporting hanger 33, the lifting / lowering body 14 is further raised by the lifting drive means 16, and the load supporting hanger 33 is moved to the upper limit position as shown on the right side of FIGS. When the transport traveling body 5 is self-propelled along the transport path 1 in a state where the transport object W is raised to the target position in the transport path 1, the transported object W can be transported. Obviously, the operation of lowering the object W to be transported at the destination location can be performed in the reverse procedure of the above loading operation.

  When the transporting traveling body 5 in the state where the transported object W is lowered and the load supporting hanger 33 is emptied travels along the return path 2, as shown on the left side of FIG. 1B and FIG. The load supporting hanger 33 that has been raised to the ascending limit position is switched from the full height extended state to the full height reduced state by the pair of left and right extension drive means 36. That is, the electric telescopic cylinders 42 of both the telescopic drive means 36 are operated in the contracting direction, and the load supporting members 35a and 35b are moved up to the ascending limit positions with respect to the hanger main bodies 34a and 34b, respectively. At this time, the load supporting members 35a and 35b are moved vertically while maintaining the horizontal posture by the linear lifting movement of the lifting rods 40a and 40b with respect to the lifting guides 39a and 39b.

  The vertical distance between the guide rail 4 and the lower end of the load support hanger 33 is reduced by reducing the overall height of the load support hanger 33 that has been raised to the ascending limit position as described above. It becomes shorter than the state which supports the to-be-conveyed object W by 33 and is conveying. Therefore, as shown in FIG. 2, even if the guide rail 3 of the conveyance path 1 and the guide rail 4 of the return path 2 installed in parallel are supported by a common horizontal beam 43, the return path 2 The floor space 44 on the lower side of the movement space of the load support hanger 33 can be increased, and the floor member 44 constituting an inspection passage below the movement space of the load support hanger 33 in the return path 2. Even when erected, the use efficiency of the floor space below the return path 2 can be increased. The floor member 44 is hung from a horizontal beam member 43 that supports the guide rails 3 and 4 through safety handrail frames 45a and 45b on both left and right sides.

  In addition, this invention can be implemented also with respect to the conveying apparatus provided with the load support hanger of the L-shaped cantilever structure by front view. Further, although the pantograph mechanism 15 for preventing the swinging movement of the load supporting hanger 33 that can be lifted and lowered from the lifting body 14 is provided, depending on the case, the load supporting hanger swinging preventing means such as the pantograph mechanism 15 may be omitted. it can.

FIG. A is a side view showing a transport state on a transport path, and FIG. B is a partially cutaway side view showing a travel state of an empty transport traveling body on a return path. It is a front view which shows the conveyance path | route and return path | route which were arranged in parallel. It is a side view which shows the state at the time of unloading of a to-be-conveyed object. It is a front view same as the above. It is a schematic side view explaining the raising / lowering mechanism of a raising / lowering body. It is a schematic side view explaining the structure of the load support hanger.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Conveyance path 2 Return path 3, 4 Guide rail 5 Conveyance traveling body 14 Lifting body 15 Pantograph mechanism 16 Elevating drive means 17a, 17b Pantograph links 24a-24d Chain 26 Motor 27 Quadruple drive wheel 28 Elevating take-up means 33 Load support Hanger 34a, 34b hanger body 35a, 35b load support 36 telescopic drive means 37 hanger opening / closing motor 39a, 39b lift guides 40a, 40b lift rod 41 load support 42 electric telescopic cylinder

Claims (3)

  A suspended transport device in which a load support hanger is provided on the lower side of a lift body that is suspended from a transport traveling body so as to be lifted and lowered, and the load support hanger is connected to the lift body by a lower end load support tool. It is configured to be vertically stretchable so that it can be switched between a full height extended state that can support the load on the lower side and a full height reduced state in which the lower end load supporter approaches the lower side of the lifting body. A suspended conveying device provided with supporting hanger telescopic drive means.   The load support hanger is supported at the lower end of a lifting rod guided linearly by a lifting guide provided on a hanger body supported by the lifting body, and the load supporting hanger. The suspension conveyance device according to claim 1, wherein the expansion / contraction driving means is constituted by an electric expansion / contraction cylinder interposed between the hanger body and the load support. A pair of left and right hanger bodies of the load support hanger are arranged side by side so as to be openable and closable with respect to the lifting body, and the load support and load support hanger expansion / contraction drive means are provided for each hanger body. The suspended conveying apparatus according to 1 or 2.

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