JP2009154560A - Suspending carrying device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To effectively prevent falldown of a carrying object caused by swinging to the carrying object support member side and dropping from a carrying object support member, when a traveling carriage travels in a horizontal curved part of traveling rails, in a suspending carrying device. <P>SOLUTION: A horizontal roller 24 is pivoted on the lower end of the carrying object support member 11 by a shaft 25 turning in the vertical direction. A guide plate 27 for checking or damping the swinging to the carrying object support member 11 side generated by centrifugal force when the traveling carriage 4 travels in the horizontal curved part of the traveling rails 1a and 1b by abutting on the horizontal roller 24, is arranged on a floor surface 26 under a tail end part or its extension part in the traveling direction in the horizontal curved part of the traveling rails 1a and 1b. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  According to the present invention, a transport object supporting member is suspended from a traveling carriage that travels along a traveling rail provided on a ceiling or the like of a factory or a warehouse, and the transported object is placed and transported on the transport object supporting member. The present invention relates to a suspended conveying device such as an overhead conveyor.

As this type of suspended transport device, a transport object support member is suspended from two travel carts that travel away from each other along a travel rail provided on a ceiling or the like, and the transport object is supported on the transport object support member. Is mounted and transported (see, for example, Patent Document 1).
JP 2007-308052 A

  In such a suspended transport device, the traveling rail is attached to the ceiling of a factory, warehouse, etc. as a closed loop that circulates through a plurality of work stations, so there is always a horizontal curved portion that curves in the horizontal direction. When the traveling carriage travels in such a horizontal curved portion, the lower end of the transported object supporting member and the transported object placed on the transported support member are swung outwardly of the curved portion due to centrifugal force. This causes the lower end portion to move while swinging on both sides.

  Such swaying of the transported object support member is greater as the radius of curvature of the horizontal curved portion of the traveling rail is smaller and the speed of the traveling carriage traveling there is greater.

  Therefore, when the transported object is a plate-shaped object such as plate glass, and is transported while leaning diagonally on the transported object support member, the transported object support when traveling on the horizontal curved portion of the traveling rail as described above. If the member shakes greatly, the conveyed product may fall down and fall from the conveyed product support member.

  In particular, when traveling along the horizontal curved portion of the traveling rail by hanging the front and rear portions of the traveling object support member on two traveling carriages traveling away from each other along the traveling rail, A time lag occurs between the shaking of the front part and the shaking of the rear part, and due to this, the phenomenon that the conveyed product support member undulates in plan view with respect to the traveling direction occurs, thereby A torsion arises in a conveyed product, and it becomes easy for a conveyed product to fall from a conveyed product support member.

  In the present invention, in view of the above-mentioned problems of the prior art, the fall of the conveyed product caused by the lateral swing of the conveyed product support member when the traveling carriage travels the horizontal curved portion of the traveling rail, It is an object of the present invention to provide a suspended conveying device that can effectively prevent a falling from a conveyed product support member.

According to the present invention, the above problem is solved as follows.
(1) A transport object support member is suspended from a travel carriage provided on a ceiling or the like and traveling along a travel rail having a horizontal curved portion, and the transport object is placed and transported on the transport object support member. In the suspended conveying device, a horizontal roller is pivotally attached to the lower end of the conveyed product support member with a shaft facing in the vertical direction, and a terminal end portion of the traveling direction in the horizontal curved portion of the traveling rail or an extension thereof is provided. By abutting against the horizontal roller on the lower floor surface, the lateral movement of the conveyed product support member caused by centrifugal force when the traveling carriage travels the horizontal curved portion of the traveling rail is prevented or attenuated. A guide plate is provided.

  (2) In the above item (1), the conveyed product support member is fixed to the vertical gutter suspended from the traveling carriage, a side plate provided at the lower end of the vertical gutter, and the vertical gutter. And a side support member configured to come into contact with one side surface of the conveyed product, and the lower end of the plate-shaped transported product is placed on the receiving plate, and one side surface comes into contact with the side support member In this way, it is inclined to one side and is supported by leaning.

  (3) In the above item (2), the guide plate is provided on the floor surface below the end portion of the traveling direction in the horizontal curved portion of the traveling rail having the center of curvature in the direction in which the conveyed product is inclined or the extension portion thereof. .

  (4) In any one of the above items (1) to (3), the conveyed product support member is suspended and supported by two traveling carriages that travel away from each other along the traveling rail, and two horizontal rollers Are provided at the lower end of the conveyed product support member so as to be positioned directly below the traveling carriage.

  (5) In any of the above items (1) to (4), the drive shaft disposed in parallel with the traveling rail is rotated by a driving device, and the propulsion wheel mounted on the traveling carriage on the outer peripheral surface of the drive shaft. Is applied in a slanting direction to apply a propulsive force to the traveling carriage.

  (6) In any one of the above items (1) to (5), the guide plate is provided on the floor so as to be movable in a direction perpendicular to the traveling rail, and the guide plate is directed in a direction in contact with the horizontal roller. A biasing means for biasing is provided on the floor surface.

  (7) In the above item (6), the urging means is provided with a pair of compression coil springs that urge both ends of the guide plate in a direction in contact with the horizontal roller.

  (8) In the above item (6) or (7), the urging means is provided with an air cylinder device that urges the central portion of the guide plate in a direction in contact with the horizontal roller.

According to the present invention, the following effects can be achieved.
(1) According to the invention described in claim 1, when the traveling carriage travels on the horizontal curved portion of the traveling rail, the lower end portion of the transported object support member and the transported object placed on the transported support member are bent at the curved portion. Is then swung to the outside of the rail, and then alternately swings on both sides of the traveling rail, but when the traveling carriage reaches the end of the traveling direction in the horizontal curved portion of the traveling rail or its extension, When the horizontal roller pivotally attached to the lower end of the support member comes into contact with the guide plate, the above-mentioned shaking of the transported object support member ends early, effectively preventing the transported object from falling or falling from the transported object support member. Can be prevented.

  (2) According to the invention described in claim 2, since the plate-like transported object is inclined to one side and supported by leaning on the transported object support member, The transported article can be easily attached and detached, and the structure of the transported object support member can be simplified.

  (3) According to the invention described in claim 3, there are two types of horizontal curved portions of the traveling rail, rightward and leftward. Of these, there is a risk of the fall of the conveyed item or the falling from the conveyed item support member. Since the guide plate is provided on the floor surface below the end of the traveling direction or its extension in the horizontal curved portion of the traveling rail that has the center of curvature in the direction in which the conveyed object is inclined, It is possible to effectively prevent an object from falling over or falling from the conveyed object support member.

(4) According to the invention described in claim 4, the transported object supporting member is suspended and supported by the two traveling carriages that are separated from each other along the traveling rail, and the two horizontal rollers are respectively connected to the traveling carriage. Is provided at the lower end of the transported object support member so as to be located directly under the torsional force when each horizontal roller abuts against the guide plate, the torsional force is applied to the transported object support member and the transported object placed thereon. Can be prevented, and the fall of a conveyed product and the fall from a conveyed product support member can be prevented effectively.
That is, when the front and rear positions of the traveling carriage and the horizontal roller corresponding to the top and bottom are shifted, the straight line is inclined, and when each horizontal roller comes into contact with the guide plate, the straight line is perpendicular to the straight line. A slanting moment occurs around the carrier, which acts as a torsional force on the transport object support member and the transport object placed on it, reducing the frequency of the fall of the transport object and dropping from the transport object support member. However, according to the invention of claim 4, such a fear can be eliminated.

  In addition, when the transport object support member is suspended by two traveling carriages that travel away from each other along the travel rail, as described above, the front part of the transport object support member and the rear part of the transport object support member are also shaken. This causes a time lag, and this causes a phenomenon that the transported object support member undulates in a plan view with respect to the traveling direction. According to the invention of claim 4, when the preceding horizontal roller comes into contact with the guide plate, the front part of the transported object support member is first suppressed, and then the rear When the horizontal roller of the row comes into contact with the guide plate, it is possible to suppress the wobbling phenomenon as described above as much as possible by suppressing the shaking of the rear part of the conveyed product support member. Effectively falling over or falling from the support member It is possible to stop.

  (5) According to the fifth aspect of the present invention, since it is not necessary to attach a driving means such as a motor to the traveling carriage, the traveling carriage can be reduced in size and weight and can be easily driven.

  (6) According to the invention described in claim 6, the guide plate is provided on the floor so as to be movable in a direction orthogonal to the traveling rail, and the guide plate is biased toward the direction in which the guide plate comes into contact with the horizontal roller. Since the means is provided on the floor surface, the impact when the horizontal roller comes into contact with the guide plate can be reduced. Further, when the swing of the transported object support member is suddenly stopped, the transported object placed on the transported object support member may fall from the transported object support member due to inertia, but such a fear can also be prevented.

  (7) According to the invention described in claim 7, since the urging means is provided with a pair of compression coil springs that urge both ends of the guide plate toward the abutting direction with the horizontal roller. Even if the plate is lengthened, the guide plate can be urged in a balanced manner by the pair of compression coil springs.

(8) According to the invention described in claim 8, since the urging means is provided with the air cylinder device that urges the central portion of the guide plate in a direction in contact with the horizontal roller, the guide plate is simply With one air cylinder device, it is possible to urge with good balance.
In particular, when combined with the invention according to claim 7, a single air cylinder device is disposed in the center of a pair of compression coil springs, and a balanced composite biasing means can be provided.

Next, an embodiment of the suspended conveying device of the present invention will be described with reference to FIGS.
The basic configuration of this embodiment is the same as that described in the above-mentioned Patent Document 1, so that these will be briefly described, and then the specific configuration of the present invention will be described in detail. .

  As shown in FIG. 1, this suspension conveyance device includes two traveling rails 1 a, 1 b that are suspended from a ceiling or the like along a conveyance path and face parallel to each other, and two traveling rails 1 a, 1 b. The drive shaft 2 which is disposed above and parallel to them and is rotated around its own axis by the drive device 12 (see FIG. 3) and supported by the fixed body 13 (see FIG. 3). A pair of front and rear traveling carts 4 configured to travel on both traveling rails 1a and 1b with four traveling wheels 3, and a cradle 5 mounted on each traveling cart 4 so as to be slightly movable up and down, A spring 6 that urges the cradle 5 upward, and four propulsion wheels 7 that are mounted on the upper surface of each cradle 5 so as to be in pressure contact with the outer peripheral surface of the drive shaft 2 in an oblique direction. And a suspension support 8 that hangs down from each traveling carriage 4 A connecting rod 9 that faces the front-rear direction that connects the lower ends of the two and a transported object support member 11 that is pivotally attached to the connecting rod 9 with a pair of front and rear connectors 10, 10.

  When the drive shaft 2 is rotated as indicated by an arrow A in FIG. 2, the four conveying wheels 7 in pressure contact with the outer peripheral surface of the suspension conveying device are driven to rotate. Since the four propulsion wheels 7 are oriented obliquely with respect to the axis of the drive shaft 2, a propulsive force directed forward as indicated by an arrow B in FIG. The traveling carriage 4 is caused to travel forward.

  As shown in FIG. 3, the drive device 12 pivotally supports a drive shaft 14 parallel to the drive shaft 2 on a fixed body 13 suspended from a ceiling or the like, and a pulley 15 fixedly fitted to the drive shaft 14; A V-belt 16 is wound around an annular V-groove (not shown) provided on the outer peripheral surface of the drive shaft 2, and the drive shaft 14 is rotated by a motor 17, whereby the drive shaft is connected via the pulley 15 and the V-belt 16. 2 is rotated.

  The transported object support member 11 has a rectangular frame by connecting the front and rear ends of a pair of upper and lower horizontal bars 18 and 18 facing in the front-rear direction with a pair of front and rear vertical bars 19 and 19 facing in the vertical direction. The body 20 is formed, and in this frame body 20, a side support member 21 is formed as an inclined plate that supports the plate-shaped transported object W by leaning diagonally, and extends to one side at a right angle from its lower end. The receiving plate 22 that receives and supports the lower end of the conveyed product W and the horizontal gutter plate 23 that is connected to the upper end of the side support member 21 and covers the upper side of the conveyed product W are fixed to each other. By connecting the front and rear portions of the rod 18 to the connecting devices 10 and 10, the two traveling carts 4 and 4 are suspended and supported by the hanging support rod 8.

  The side support member 21 can be not only an inclined plate but also one or a plurality of bars facing the front-rear direction, a net plate or a lattice, and the receiving plate 22 includes a plurality of arms, It can consist of a lattice body etc. The gutter plate 23 can be omitted.

  The conveyed product W is supported by being leaned on one side of the traveling rails 1a and 1b so that the lower end thereof is placed on the receiving plate 22 and one side surface is in contact with the side surface supporting member 21. It is like that.

The above configuration is almost the same as the conventional one described in Patent Document 1, but in the present invention, the following specific configuration is added to the above configuration.
That is, as shown in FIGS. 4 and 5, the horizontal rollers 24, 24 are arranged in the vertical direction on the lower surfaces of the front and rear two positions located immediately below the traveling carriages 4, 4 on the horizontal rail 18 below the conveyed product support member 11. As shown in FIG. 6, it is pivotally attached to the shafts 25, 25 facing to each other, and as shown in FIG. By contacting the horizontal rollers 24, 24, the lateral movement of the conveyed product support member 11 caused by the centrifugal force when each traveling carriage 4 travels the horizontal curved portions 1ax, 1bx of the traveling rails 1a, 1b is prevented. A guide plate 27 is provided for damping or damping.

  In the example shown in FIG. 5 and FIG. 6, traveling on the horizontal curved portions 1 ax and 1 bx of the traveling rails 1 a and 1 b having the center of curvature O (FIG. 6) in the direction in which the conveyed product W is inclined (rightward in FIG. 5). A guide plate 27 for guiding the horizontal roller 24 is provided on the floor surface below the direction end portion or its extensions 1ay and 1by so as to be movable in a direction away from the center of curvature O perpendicular to the traveling rails 1a and 1b. ing.

7 to 9 show a support device 28 for the guide plate 27.
The support device 28 includes a base plate 31 fixed to the floor surface 26 with bolts and nuts 30 via spacers 29, and a rail 32 fixed to the upper surface thereof and facing the direction orthogonal to the traveling rails 1a and 1b. A pair of LM guides 34, 34 before and after the sliding body 33 fixed to the lower surface of the horizontal portion 27a of the guide plate 27 is slidably mounted (the traveling direction of the traveling carriage 4 is the front), and both end portions are A pair of front and rear guide pins 36, 36 that are installed between both ends of a pair of left and right brackets 35, 35 that are fixed to the upper surface of the base plate 31 and that are long in the front-rear direction, and that face in a direction perpendicular to the traveling rails 1 a, 1 b. Each of the guide pins 36 is fitted between the bracket 35 that is far from the traveling rails 1a and 1b and a hanging piece 37 that is long in the front-rear direction and hangs down from the lower surface of the horizontal piece 27a of the guide plate 27. A pair of front and rear compression coil springs 38 and 38 for urging the guide plate 27 in a direction in contact with the horizontal roller 24 and a center portion of the base plate 31 in the front-rear direction are located farther from the traveling rails 1a and 1b. One end of the cylinder 40 is fixed to the central portion of the bracket 35 with the cylinder bracket 39, and the tip of the piston rod 41 protruding from the one end of the cylinder 40 toward the traveling rails 1 a and 1 b is connected to the central portion of the hanging piece 37. An air cylinder device 42 that biases the guide plate 27 as an air spring toward the horizontal roller 24 by being fastened is provided.

  The stop position of the guide piece 27b standing from the inner end of the horizontal piece 27a on the guide plate 27 is along the movement locus L (see FIG. 7) when the horizontal roller 24 is assumed to have moved in a state where the centrifugal force does not act. As a reference position (position shown in FIGS. 7 to 9), the position that contacts the horizontal roller 24 when moving in consideration of the traveling speed and other conditions of the traveling carriage 4 passing therethrough, the traveling rails 1a and 1b It is preferable that the position can be adjusted in the orthogonal direction.

  As shown in FIG. 6, a pair of left and right guides that linearly guide the horizontal roller 24 on the floor surface directly below the straight portions 1az and 1bz in the traveling direction ahead of the extensions 1ay and 1by in the traveling rails 1a and 1b. A straight portion guide device 44 comprising plates 43 and 43 is provided.

  Expanded portions 43a, 43a, 43b, and 43b that expand rearward and forward in plan view are provided at the entrance side end and the exit side end of the horizontal roller 24 in both guide plates 43 and 43, respectively. ing. The widening widths of the widening portions 43a and 43a at the entrance side end and the length in the traveling direction of the horizontal roller 24 are made larger than the widening portions 43b and 43b at the outlet side end.

  According to this suspension conveyance device, when the traveling carriages 4 and 4 pass through the horizontal curved portions 1ax and 1bx of the traveling rails 1a and 1b, first, the front part in the traveling direction of the conveyed product support member 11 is caused by centrifugal force. It is shaken toward the outside of the horizontal curved portions 1ax and 1bx, and then the rear portion in the traveling direction of the conveyed product support member 11 is slightly shaken toward the outside of the horizontal curved portions 1ax and 1bx.

  When the preceding traveling carriage 4 reaches the peripheral end portions of the horizontal curved portions 1ax and 1bx of the traveling rails 1a and 1b, the preceding horizontal roller 24 immediately below is swung outward from the original locus by centrifugal force. However, it abuts against the guide piece 27b of the guide plate 27 and pushes the guide plate 27 away from the center of curvature O (FIG. 6) against the urging force of the compression coil springs 38, 38 and the air cylinder device 42. By the reaction force at that time, the energy due to the centrifugal force at the front part in the traveling direction of the conveyed product support member 11 is attenuated via the horizontal roller 24, and the preceding horizontal roller 24 moves in the movement locus shown in FIG. Gradually approaching L.

  Next, when the following traveling carriage 4 reaches the peripheral end portions of the horizontal curved portions 1ax and 1bx of the traveling rails 1a and 1b, the subsequent horizontal roller 24 immediately below the same is similar to the preceding horizontal roller 24. Then, it abuts against the guide piece 27b of the guide plate 27 and pushes the guide plate 27, and the energy caused by the centrifugal force is attenuated by the reaction force at that time, and gradually approaches the movement locus L shown in FIG.

  Therefore, when the guide plate 27 is not provided, as described above, the transported object support member 11 has a phenomenon of undulation in a plan view with respect to the traveling direction, whereby the transported object is twisted and the transported object is transported. Although it is easy to fall from the object support member, by providing the guide plate 27 in the present embodiment, such a wavy phenomenon of the object support member 11 can be prevented in advance, so Moreover, the fall from the conveyed product support member 11 can be prevented effectively.

  The front and rear horizontal rollers 24, 24 pass between the pair of left and right guide plates 43, 43 in the linear portion guide device 44 in a state in which the lateral shaking is substantially suppressed before passing through the guide plate 27. After that, the conveyed product support member 11 can proceed smoothly without swinging left and right.

Although one embodiment of the present invention has been described above, the present invention can be variously modified and changed without departing from the scope of the claims.
For example, in the above embodiment, the guide plate 27 is disposed outside the movement locus L of the horizontal roller 24 shown in FIG. 7, and energy due to the centrifugal force of the conveyed product support member 11 is attenuated via the horizontal roller 24. However, it is arranged on the inner side of the movement locus L, and the carrier support member 11 is shaken back to the other side after being swung to one side by the centrifugal force via the horizontal roller 24. The energy may be attenuated.
Of course, the guide plates 27 may be disposed on both the inner and outer sides of the movement locus L of the horizontal roller 24 shown in FIG.

  Moreover, in the said embodiment, although related to the horizontal curved part 1ax and 1bx of the traveling rails 1a and 1b which have the curvature center O in the direction in which the conveyed product W inclines (in this case, the conveyed product W is The guide plate 27 is also provided in the same manner as described above for the horizontal curved portions of the traveling rails 1a and 1b having the center of curvature O in the direction opposite to the direction in which the conveyed object W is inclined. Also good.

  Further, in the above-described embodiment, the four propulsion wheels 7 that are pressed against the outer peripheral surface of the drive shaft 2 in an oblique direction are driven to rotate by the rotation of the drive shaft 2, thereby propelling the traveling carriage 4. Although the force is applied, any drive mechanism or the like of the suspension conveyance device may be used. For example, the wheels of the traveling carriage 4 may be motor-driven.

It is a perspective view of the principal part of one Embodiment of this invention. It is explanatory drawing for demonstrating the drive principle of the hanging conveyance apparatus shown in FIG. It is an enlarged vertical front view of the principal part of the hanging conveyance apparatus shown in FIG. It is a side view of the principal part of the hanging conveyance apparatus shown in FIG. It is a vertical front view which follows the VV line of FIG. It is a top view which shows what was arrange | positioned on the floor surface along the horizontal curve part and the following linear part of a traveling rail, and it. It is a top view of a guide plate and its supporting device. FIG. 8 is an enlarged longitudinal sectional view taken along line VIII-VIII in FIG. 7. FIG. 8 is an enlarged longitudinal sectional view taken along line IX-IX in FIG. 7.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1a, 1b Traveling rail 1ax, 1bx Horizontal curved part 1ay, 1by Extension part 1az, 1bz Linear part 2 Drive shaft 3 Traveling wheel 4 Traveling carriage 5 Receptacle 6 Spring (biasing means)
7 Propulsion wheel 8 Suspended support rod 9 Connection rod 10 Connection tool 11 Conveyance object support member 12 Drive device 13 Fixed body 14 Drive shaft 15 Pulley 16 V belt 17 Motor 18 Recumbent rod 19 Vertical rod 20 Frame body 21 Side surface support member 22 Receiving plate 23 Plate 24 Horizontal roller 25 Shaft 26 Floor 27 Guide plate 27a Horizontal piece 27b Guide piece 28 Support device 29 Spacer 30 Bolt / Nut 31 Base plate 32 Rail 33 Slider 34 LM Guide 35 Bracket 36 Guide pin 37 Drooping piece 38 Compression Coil spring 39 Cylinder bracket 40 Cylinder 41 Piston rod 42 Air cylinder device 43 Guide plates 43a, 43b Expanding portion 44 Linear portion guide device L Movement locus W Conveyed material

Claims (8)

A transport object support member is suspended from a travel carriage provided on a ceiling or the like and traveling along a travel rail having a horizontal curved portion, and the transport object is placed and transported on the transport object support member. In hanging conveyor
A horizontal roller is pivotally attached to the lower end of the conveyed product support member with a shaft facing in the up-and-down direction, and the horizontal roller is disposed on the floor surface below the end portion of the traveling direction in the horizontal curved portion of the traveling rail or its extension. A guide plate is provided that prevents or attenuates the lateral shaking of the conveyed product support member caused by the centrifugal force when the traveling carriage travels on the horizontal curved portion of the traveling rail. Hanging conveyor device.   A transport object support member is supported by a vertical shaft suspended from a traveling carriage, a laterally facing receiving plate provided at the lower end of the vertical shaft, and abutted against one side surface of the transport object. The plate-like transported object is inclined to one side so that its lower end is placed on the receiving plate and one side surface is in contact with the side surface supporting member. The suspended conveying device according to claim 1, wherein the suspended conveying device is stood and supported.   The suspended conveying apparatus according to claim 2, wherein a guide plate is provided on a floor surface below a terminal portion of the traveling direction or an extension portion of the horizontal curved portion of the traveling rail having a center of curvature in a direction in which the conveyed object is inclined. .   The transported object support member is suspended by two travel carts that travel away from each other along the travel rail, and the two horizontal rollers are positioned directly below the travel cart, respectively. The hanging conveyance apparatus in any one of Claims 1-3 provided in the lower end of the supporting member.   A drive shaft arranged in parallel with the traveling rail is rotated by a driving device, and a propulsion wheel mounted on the traveling carriage is pressed against the outer peripheral surface of the drive shaft in an oblique direction to propel the traveling carriage. The suspended transfer device according to any one of claims 1 to 4, wherein a force is applied.   The guide plate is provided on the floor so as to be movable in a direction orthogonal to the traveling rail, and biasing means for biasing the guide plate in a direction in contact with the horizontal roller is provided on the floor. 5. The hanging transfer device according to any one of 5 above.   The suspended conveying apparatus according to claim 6, wherein the urging means includes a pair of compression coil springs that urge both end portions of the guide plate in a direction in contact with the horizontal roller.   The suspended conveying device according to claim 6 or 7, wherein the urging means includes an air cylinder device that urges the central portion of the guide plate toward a direction in contact with the horizontal roller.

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