JP5880873B2 - Travel path switching device - Google Patents

Description

  The present invention includes a movable rail for path switching that is pivotally supported at a branch point of a traveling path of a conveying traveling body so as to be horizontally swingable, and a driving means that selectively switches the movable rail to two path switching postures. The present invention relates to a travel route switching device provided with

  As described in Patent Document 1, this type of travel path switching device includes a movable rail for path switching that is pivotally supported at a branch point of the travel path of the transport traveling body so as to be horizontally swingable, and the movable rail. Driving means for selectively switching between two path switching attitudes, wherein the driving means is disposed below the attitude switching lever connected to the movable rail, and below the attitude switching lever. The crank arm is provided with a crank pin that engages with a posture switching lever at the tip, and a motor that drives a drive shaft of the crank arm. A travel path switching device having such a configuration is usually used for path switching by operating a motor to rotationally drive a crank arm and swinging a posture switching lever forward and backward within a certain angle range via a crank pin. The movable rail can be switched from one of the two path switching postures to the other, but in the event of an abnormal situation where the motor is unable to operate normally for some reason, the movable rail for path switching It may be necessary to switch the posture of the camera manually. However, even if the motor is brakeless, direct switching of the path-switching movable rail directly by hand requires a great operating force depending on the angle of the crank arm. In order to solve such a problem, although the structure of the travel route switching device is different, a device that is provided with a switching means for manual operation in the travel route switching device is known from Patent Document 2, so this Patent Document In accordance with what the description in 2 suggests, it is conceivable to add switching means for manual operation to the configuration described in Patent Document 1.

JP 2005-1515 A JP 2006-151351 A

  In this type of travel path switching device, at least the engaging portion between the crank pin of the crank arm driven by the motor and the attitude switching lever of the drive means is covered by a horizontal cover plate installed above the drive means. Therefore, the cover is provided with an opening in accordance with what the description of Patent Document 2 suggests, and a detachable cover plate that closes the opening is provided, and when the posture switching lever is rotated manually, The lid plate is removed and the internal manual operation handle is operated through the opened opening. However, in such a configuration, it is necessary to remove the cover plate prior to manual operation and attach the cover plate after the manual operation is completed, which is troublesome. Moreover, in order to facilitate the operation, the size of the opening that is opened when the cover plate is removed must be made sufficiently large, so that the cover plate to be attached and detached is also large and the attachment / detachment operation cannot be performed easily. .

  The present invention proposes a travel route switching device that can solve the above-described conventional problems, and the travel route switching device according to the present invention understands the relationship with embodiments described later. For ease of explanation, the reference numerals used in the description of the embodiment are shown in parentheses, and the path switching is supported in a swingable manner at the branching point of the travel path of the transport traveling body (8). Movable rail (4), and drive means (5) that selectively switches the movable rail (4) to two path switching postures. The drive means (5) includes the movable rail (4). And a crank pin (20a) disposed below the posture switching lever (19) and engaged with the posture switching lever (19) at the tip. A horizontally rotatable crank arm (20) and a drive shaft (21a) of the crank arm (20). In the travel path switching device composed of the motor (21), the horizontal cover plate (27) installed so as to cover the drive means (5) has an upper side of the rotation path of the crank pin (20a). Is provided with an opening (31) for opening the cover and a cover plate (32) covering the opening (31), and the crank pin (20a) passes through the cover plate (32). A manual operation shaft portion (35) protruding above the lid plate (32) is continuously provided, and connecting means (33) for rotating the lid plate (32) integrally with the crank arm (20) is provided. It has a side-by-side configuration.

  According to the configuration of the present invention described above, when it is necessary to manually switch the movable rail for path switching, the posture switching lever is not used instead of the movable rail or the posture switching lever connected to the movable rail. Because the motor-driven crank arm operated by movement is rotated by the manual operation shaft provided on the crank pin at the tip, it is light and easy regardless of the relative angle between the crank arm and the posture switching lever. By manually driving the attitude switching lever, the path switching movable rail can be switched from one of the two path switching attitudes to the other. In addition, the large opening necessary to allow the crank pin (manual operation shaft) at the tip of the crank arm to rotate is always closed by a cover plate that rotates integrally with the crank arm. There is no need to remove and attach the cover plate before and after manual operation, and the entire manual operation can be performed easily and efficiently.

  The manual operation shaft portion (35) may be directly gripped by hand and rotate the crank arm (20) around the drive shaft (21a). 35) is fixed to the crank arm (20) so that it cannot rotate, and a grip portion of an appropriate length extending from the manual operation shaft portion (35) in a horizontal direction is continuously provided. The manual operation can be made easier by increasing the manual operation radius from the drive shaft (21a) of the crank arm (20). In this case, since the grip portion rotates together with the cover plate (32) on the upper side of the horizontal cover plate (27), the length of the grip portion cannot be made sufficiently long, but the manual operation When providing an operation lever (40) that can be attached to and detached from the manual operation shaft portion (35) via a fitting portion (square hole 42a) that can be fitted to and detached from the shaft portion (35) so that relative rotation is impossible. Only during manual operation, the length of the operation lever attached to the manual operation shaft and used can be made sufficiently long to further facilitate manual operation.

FIG. 1 is a plan view showing a state in which the path switching movable rail is switched to the branch path side. FIG. 2 is a plan view showing a state where the path switching movable rail is switched to the straight path side. FIG. 3 is a side view of FIG. FIG. 4 is a cross-sectional plan view of the travel route switching device. FIG. 5 is a longitudinal side view of the travel route switching device. 6A is a rear view of FIG. 2, and FIG. 6B is a cross-sectional plan view of the main part thereof. FIG. 7A is a plan view of the main part in a state in which the operation lever is set, and FIG. 7B is a partially longitudinal rear view thereof.

  In FIG. 1 to FIG. 3, reference numeral 1 is an upper main path of a branch point in the travel path of the transport traveling body, 2 is a lower straight line path of the branch point, and 3 is a lower branch path of the branch point. The movable rail 4 for switching the path and the driving means 5 are arranged. 1, 2, and 6 </ b> A, the illustrated travel route is configured by a pair of left and right groove-shaped guide rails 6 a and 6 b that are arranged in parallel so that the groove portions face each other. On the upper horizontal plate portions of the guide rails 6a and 6b, steadying rail members 7a and 7b are laid along the inner sides. Further, a conveying traveling body 8 traveling along the illustrated traveling path includes a friction drive load bar 10 having a plurality of joints that are long in the traveling direction and horizontally swingable around the vertical support shaft 9. A plurality of trolleys 11 for supporting the load bar 10 are provided, and the top trolley 11 of the plurality of trolleys is shown in the figure. Each trolley 11 of the transporting traveling body 8 is in contact with two pairs of left and right support wheels 12a, 12b fitted to the groove-shaped guide rails 6a, 6b, and the inner side of the steadying rail members 7a, 7b. And two pairs of left and right steadying rollers 13a and 13b that roll around a vertical axis. Reference numeral 14 denotes a guide rail support installation member for integrally connecting a pair of left and right groove-shaped guide rails 6a and 6b and installing them on the floor surface. The illustrated transport traveling body 8 is an example. For example, when the interval between the groove-shaped guide rails 6a and 6b is narrow, a pair of front and rear diameters that are just fitted between the groove-shaped guide rails 6a and 6b. It may be provided with a steady-state roller, and its structure may be any.

  As shown in FIGS. 4 and 5, the movable rail 4 for path switching is provided on the rotating boss portion 16 supported by the vertical support shaft 15, and the lower horizontal guide grooves 6 a and 6 b of the upper straight path 1. A lower rail member 17 connected to the plate portion and an upper rail member 18 connected to the steady-state rail members 7a and 7b of the groove-shaped guide rails 6a and 6b of the upper-side straight path 1 are fixed, and are vertically By a horizontal swing within a certain range around the support shaft 15, the branch path connection posture shown in FIG. 1 and the straight path connection posture shown in FIG. 2 are switched.

  When the movable rail 4 is in the branch path connection posture shown in FIG. 1, the lower rail member 17 is the lower horizontal plate portion of the groove guide rail 6 a of the upper straight path 1 and the groove guide of the lower branch path 3. The upper horizontal member 18 is connected to the lower horizontal plate portion of the rail 6a, and the upper rail member 18 is provided with the steady-state rail member 7a on the groove-shaped guide rail 6a of the upper-side straight path 1 and the groove-shaped guide rail 6a of the lower-side branch path 3. Since the upper steadying rail member 7a is connected, the supporting wheel 12a of the transporting traveling body 8 is located below the movable rail 4 from the lower horizontal plate portion of the groove-shaped guide rail 6a of the upper straight path 1. Transfers onto the lower horizontal plate portion of the groove-shaped guide rail 6 a of the lower branch path 3 via the side rail member 17, and the steadying roller 13 a of the traveling body 8 is a groove of the upper straight path 1. Stabilization of guide rail 6a Is guided from the side surface of the use rail members 7a to the side surface of the anti-vibration rail members 7a of the groove-shaped guide rails 6a of downstream side branched passage through the side surface of the upper rail member 18 third movable rail 4. When the movable rail 4 is in the straight path connection posture shown in FIG. 2, the lower rail member 17 has a groove shape of the lower horizontal plate portion of the groove-shaped guide rail 6 b of the upper-side straight path 1 and the lower-side straight path 2. The upper horizontal member 18 is connected to the lower horizontal plate portion of the guide rail 6b, and the upper rail member 18 is a steady-state rail member 7b on the groove-shaped guide rail 6b of the upper-side straight path 1 and the groove-shaped guide rail of the lower-side branch path 3. Since the rail member 7b for steadying on 6b is connected, the supporting wheel 12b of the transporting traveling body 8 is connected to the movable rail 4 from the lower horizontal plate portion of the groove-shaped guide rail 6b of the upper straight path 1. Transfers onto the lower horizontal plate portion of the groove-shaped guide rail 6b of the lower linear path 2 via the lower rail member 17, and the steadying roller 13b of the transport traveling body 8 On channel guide rail 6b It is guided to the side surface of the anti-vibration rail member 7b on poor side straight path 2 grooved guide rail 6b through the side of the upper rail member 18 of the movable rail 4 from the side of the anti-vibration rail member 7b.

  Next, the driving means 5 will be described with reference to FIGS. 4 to 6. The driving means 5 is located in an area of a triangular triangle in plan view between the lower straight path 2 at the branch point and the lower branch path 3 at the branch point. And a posture switching lever 19, a crank arm 20, and a crank arm driving member fixedly extended in a direction opposite to the movable rail 4 from the rotating boss portion 16 of the movable rail 4 for path switching. Motor 21 and the like. The motor 21 has both sides mounted on support members 22a and 22b fixed to the outer surface of the groove-shaped guide rail 6b of the lower-side straight path 2 and the outer surface of the groove-shaped guide rail 6a of the lower-side branch path 3. A drive shaft 21a that protrudes upward on the lower side of the fixed horizontal support plate 23 is a center between the groove-shaped guide rail 6b of the lower-side straight path 2 and the groove-shaped guide rail 6a of the lower-side branch path 3. It is installed so as to penetrate the horizontal support plate 23 upward at a position, and the inner end of the crank arm 20 is attached to the drive shaft 21a. A crankpin 20a is fixedly projected upward from the tip of the crank arm 20.

  The posture switching lever 19 is formed in a forked shape with a slit 19a provided in the region from the free end to an intermediate suitable position in parallel with the length direction, and a roller 24 loosely fitted in the slit 19a is provided with the crank pin. The outer fitting support 20a is rotatably supported by 20a. The rotating boss part 16 of the movable rail 4 for path switching is arranged in two upper and lower stages provided at the tip of a triangular area in plan view between the lower straight path 2 at the branch point and the lower branch path 3 at the branch point. The vertical support shaft 15 that is loosely fitted between the front end portions of the horizontal support plates 25a and 25b and pivotally supports the rotating boss portion 16 is supported by the horizontal support plates 25a and 25b at both upper and lower ends. The upper and lower horizontal support plates 25a, 25b are a pair of left and right fixed to the outer surface of the groove-shaped guide rail 6b of the lower straight path 2 and the outer surface of the groove-shaped guide rail 6a of the lower branch path 3. Attached to the upper and lower ends of the vertical mounting plates 26a, 26b, the rear side of the lower horizontal support plate 25b is connected to the guide rail support installation member 14 and the branch point arranged at the start end of the lower straight path 2 at the branch point. The guide rail support installation member 14 disposed at the start end of the lower branching path 3 is fixed to a bent vertical plate portion 14a that is connected and integrated.

  The horizontal cover plate 27 that covers the upper side of the drive means 5 configured as described above is placed and fixed by bolts 28 on the rear side of the horizontal support plate 25a that supports the vertical support shaft 15 at its front side. The vicinity of the rear ends of the left and right sides is supported on the horizontal support plate 23 by spacers 29 and bolts 30. The horizontal cover plate 27 is provided with a circular opening 31 having a radius larger than the outer diameter of the rotation path of the crankpin 20 a concentrically with the drive shaft 21 a of the motor 21. A circular lid plate 32 positioned on the upper side of the cover plate 27 is supported by the crank arm 20 by the connecting means 33 in a concentric state with the drive shaft 21a of the motor 21 (concentric state with the circular opening 31). The crank pin 20 a includes a nut 34 that is screwed into a screw shaft portion that protrudes upward from the roller 24, and a manual operation shaft portion 35 that protrudes upward from the screw shaft portion.

  The manual operation shaft portion 35 is an angular shaft shape in which both sides in the diameter direction of the cylindrical shaft body are cut into flat surfaces parallel to each other. The square shaft-shaped manual operation shaft portion 35 is the circular lid plate 32. It penetrates in a state in which relative rotation is impossible. The connecting means 33 is composed of a connecting plate 37 that is fixed by the nut 34 with an outer end fitted to the crank pin 20 a and an inner end fixed to the bottom surface of the circular lid plate 32 by a bolt 36. ing. The circular lid plate 32 cannot be rotated relative to the manual operation shaft portion 35 by being fitted to the square-shaped manual operation shaft portion 35, and the crank pin 20a integrally including the manual operation shaft portion 35 is provided. Is fixed to the crank arm 20, and as a result, the circular lid plate 32 is supported by the crank arm 20 by the connecting plate 37 of the connecting means 33 in a state where it can rotate around the drive shaft 21a integrally with the crank arm 20. Will be.

  According to the driving means 5 configured as described above, the crank pin 20a (roller 24) revolves with the revolution of the crank pin 20a (roller 24) by starting the motor 21 and rotating the crank arm 20 around the drive shaft 21a. The posture switching lever 19 engaged with the roller 20a and the slit 19a reciprocally swings around the vertical support shaft 15 within a predetermined angle range. Accordingly, the path switching movable rail 4 integrated with the attitude switching lever 19 reciprocally swings around the vertical support shaft 15 within a predetermined angle range, and the movable rail 4 moves in the branch path connection attitude shown in FIG. 2 and the linear path connection posture shown in FIG. 2, the limit switch is switched by the free end of the posture switching lever 19 when the movable rail 4 is in the branch path connection posture as shown in FIG. 4. 38 (see FIG. 4) and a sensor such as a limit switch 39 (see FIG. 4) that is switched by the free end of the posture switching lever 19 when the movable rail 4 is in a straight path connection posture. By performing control to automatically stop the motor 21 in accordance with the detection signals of these sensors, the path switching movable rail 4 is connected to the branch path connection posture and the straight line. Alternatively, the switches that can be on the road connection attitude.

  When the motor 21 is started as described above and the movable rail 4 for path switching is switched to the branch path connection attitude or the straight path connection attitude, the crank arm 20 that rotates around the drive shaft 21a in a range of approximately 180 degrees; The circular cover plate 32 in a state where the manual operation shaft portion 35 projects from the eccentric position also rotates around the drive shaft 21a. Accordingly, when the motor 21 cannot be started normally due to a failure of the motor 21 or its power supply circuit, or when a power failure occurs, the path switching by the movable rail 4 becomes necessary, so that the circular lid 32 protrudes from the eccentric position. By manually applying a rotational operation force around the drive shaft 21a to the manually operated shaft portion 35, the movable rail 4 is switched to the branch path connection posture or the straight path connection posture in exactly the same way as when the motor is driven. I can do it.

  As a method of manually applying the rotational operation force centered on the drive shaft 21a to the manual operation shaft portion 35, the manual operation shaft portion 35 may be directly gripped by the hand and rotated around the drive shaft 21a. Although it is good, it is desirable to utilize a detachable operation lever 40 as indicated by phantom lines in FIGS. As shown in FIGS. 1 and 2, the operation lever 40 is placed and stored on a cradle 41 attached to the outer surface of the groove-shaped guide rail 6a constituting the lower straight path 2 of the branch point, for example. As shown in FIG. 7, the belt-shaped plate 42 and a grip member 43 fixed to the outer end portion of the belt-shaped plate 42 are formed. The manual operation shaft portion 35 protruding on the cover plate 32 is provided with a square hole 42a in which the operation lever 40 can be fitted so as not to be relatively rotatable in a direction in which the crank arm 20 is extended in a plan view. Is. Therefore, when manually switching the movable rail 4 to the branch path connection posture or the straight path connection posture, the square hole 42a of the operation lever 40 is fitted to the manual operation shaft portion 35 protruding on the circular lid plate 32, The operation lever 40 is set so as to extend radially outward from the circular lid plate 32, the grip member 43 of the operation lever 40 is gripped by hand, and the crank arm 20 is moved around the drive shaft 21a to a predetermined extent. The operation lever 40 may be rotated so as to rotate in the direction.

  The traveling path switching device of the present invention switches the traveling path of the transport traveling body at a branch point by horizontally rotating a movable rail for path switching within a certain angle range by a motor-driven crank arm. The device can be used as a means for enabling manual operation.

DESCRIPTION OF SYMBOLS 1 Upper side main path of a branch point 2 Lower side straight path of a branch point 3 Lower side branch path of a branch point 4 Movable rail for path switching 5 Driving means 8 Transporting body 11 Trolley 15 Vertical support shaft 16 Rotating boss part 17 Lower rail member 18 Upper rail member 19 Posture switching lever 19a Slit 20 Crank arm 20a Crank pin 21 Motor 21a Drive shaft 23 Horizontal support plate 24 Rollers 25a and 25b Horizontal support plate 27 Horizontal cover plate 29 Spacer 31 Circular opening 32 Circular shape Cover plate 33 Connection means 35 Manual operation shaft portion 37 Connection plate 40 Operation lever 41 Receiving base 42 Strip plate 42a Square hole 43 Grip member

Claims (4)

  A movable rail for path switching pivotally supported at a branching point of the traveling path of the transport traveling body so as to be horizontally swingable, and drive means for selectively switching the movable rail to two path switching postures, The driving means is a horizontally rotatable freely provided posture changing lever provided continuously from the movable rail, and a crank pin disposed at the lower side of the posture changing lever and engaged with the posture changing lever. In a travel path switching device composed of a crank arm and a motor that drives the drive shaft of the crank arm, a horizontal cover plate constructed to cover the drive means has a rotation path of the crank pin. An opening that opens the upper side is provided, and a lid plate that covers the opening is provided, and the crank pin penetrates the lid plate and the lid plate Manual operating shaft portion protruding upward is continuously provided, coupling means for rotating the cover plate integrally with the crank arm are juxtaposed, the traveling path changing apparatus.   The opening of the horizontal cover plate is a concentric circle with the drive shaft of the crank arm, and the lid plate has a larger diameter than the opening and a concentric circle with the opening. The travel route switching device according to 1.   The connecting means includes a connecting plate that overlaps the crank arm in a plan view, and is fixed to the crank arm with the outer end of the connecting plate being fitted on the crank pin, and the inner end of the connecting plate is The travel route switching device according to claim 1, wherein the travel route switching device is fixed to a bottom surface of the lid plate.   The manual operation shaft portion is fixed to the crank arm so as not to rotate. The manual operation shaft portion can be attached to and detached from the manual operation shaft portion via a fitting portion that is relatively non-rotatable with respect to the manual operation shaft portion. The travel route switching device according to any one of claims 1 to 3, wherein an operation lever is provided.

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