JPS62808B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a route switching device at an intersection of first and second trolley conveyors, which are provided with a trolley moving path and a trolley-propelling pusher moving path, at substantially the same level. .

To explain based on the attached illustrative diagram below, the first
The trolley conveyor 1 shown in the figure includes a rail 3 for guiding a trolley 2 and a rail 5 for guiding a pusher 4. a rear trolley 11 equipped with a rear trolley 9 and an operating protrusion 10 for operating the lifting dog operating lever 8 of the following trolley in the lowering direction of the lifting dog when approaching;
are connected by a connecting rod 12, and a hanger for supporting the transported object is suspended from this connecting rod 12.
The pusher 4 is suspended from the rail 5 by a trolley 13 and protrudes from a moving drive chain 14, and engages with the lifting dog 6 to propel the trolley 2.

When the trolley conveyors configured as above are crossed at approximately the same level, the trolley guide rail 3
Although it is possible to provide a rotating rail at the intersection of the two conveyors and allow the trolley to pass through each conveyor without any trouble, it is not possible to make the movement paths of the pushers 4 intersect at the same level. Therefore, it is necessary to divide (or detour) the pusher movement path of one of the two conveyors at the intersection, but the present invention provides a route switching device that is effective at such a trolley conveyor intersection. It is.

A preferred embodiment of the present invention will be described based on FIGS. 2 to 5. In FIGS.
is the first trolley conveyor, 16 is the conveyor 15
A second trolley conveyor intersects the trolley conveyor at a right angle at substantially the same level as the trolley conveyor 1 shown in FIG. Reference numeral 17 denotes a rotating rail provided at the intersection of both conveyors 15 and 16, with position A connecting the trolley guide rail 3 of the first trolley conveyor 15 and position B connecting the trolley guide rail 3 of the second trolley conveyor 16. The position can be switched by a 90 degree horizontal rotation. Further, the pusher moving path 4a of the first trolley conveyor 15 is continuously arranged at regular intervals with respect to the trolley guide rail 3 even at the intersection, but the pusher moving path 4a of the second trolley conveyor 16 is arranged continuously at the intersection at regular intervals. Movement route 4b
It is divided into a pusher movement route 4c below the intersection. Furthermore, as is clear from FIG. 3, both conveyors 15 and 16 are constructed so that the level of the second trolley conveyor 16 is slightly lower than that of the first trolley conveyor 15 at least in the area including the intersection.

In FIGS. 4 and 5, reference numeral 18 is a gate-shaped frame that supports the rotating rail 17, and is connected to a rotating boss 20 that loosely fits on the vertical fixed shaft 19.
21 is a cylinder unit, and its piston rod 24 is connected to a lever 22 protruding from the rotary boss 20.
The cylinder body 25 is connected to a support frame 27 via a universal joint 23, and the cylinder body 25 is supported by a support frame 27 via a universal support means 26. Reference numeral 28 denotes a bearing arm that supports both upper and lower ends of the vertical fixed shaft 19. A helical cam groove 29 is provided on the circumferential surface of the vertical fixed shaft 19, and a cam roller 30 that fits into the helical cam groove 29 is pivotally supported by the rotary boss 20. The slope of this cam groove 29 changes from the state where the rotating rail 17 is located at the A position connecting the trolley guide rail 3 of the first trolley conveyor 15 to the position where the rotating rail 17 is connected to the rotating boss 20 and the portal frame 18 by the cylinder unit 21. 17 is rotated 90 degrees around the vertical fixed shaft 19, as the rotating rail 17 rotates, the cam groove 29 and the cam roller 30 act to rotate the trolley guide rail 3 of the second trolley conveyor 16, which is located at a slightly lower position. It is set to descend to the position where it is connected. The distance between the rotary rail 17 at position B connecting the trolley guide rail 3 of the second trolley conveyor 16 and the pusher guide rail 5 of the first trolley conveyor 15 located above the rotary rail 17 is such that The dogs 6 and 7 of the trolley 2 of the moving second trolley conveyor 16 and the first
It is set to such an extent that collision between the trolley conveyor 15 and the pusher 4 at right angles can be avoided.
The portal frame 18 is arranged diagonally with respect to the rotation rail 17 as shown in FIG. 4 so that the 90 degree rotation is not obstructed by the pusher guide rail 5 of the first trolley conveyor 15.

According to the above configuration, the first trolley conveyor 1
When the No. 5 trolley 2 passes the intersection with the second trolley conveyor 16, the rotary rail 17 at the B position is rotated to the A position by the cylinder unit 21, and the second trolley conveyor 16
When the trolley 2 passes through the intersection,
It is sufficient to rotate the rotary rail 17 from the A position to the B position by the cylinder unit 21.
The trolley 2 of the first trolley conveyor 15 is pushed back by the pusher 4 and passes over the rotating rail 17, but the trolley 2 of the second trolley conveyor 16 is moved by the lower pusher after coming off the upper pusher movement path 4b of the intersection. It is moved via a rotating rail 17 by means of a suitable trolley feeder to the position where it engages the pusher 4 in the path 4c. Of course, the trolley 2 may be pushed by the pusher 4 on the upper pusher movement path 4b using the pusher dog 31 shown in FIG. 1 without using the trolley feeder.

According to the route switching device of the present invention, which can be implemented as described above, of the first and second trolley conveyors that intersect with each other, the pusher movement route of only one of the second trolley conveyors is divided or detoured at the intersection. This makes the structure much simpler than if both trolley conveyors were configured in this way. Moreover, the trolleys of the second trolley conveyor passing on the rotating rail move at a low position where there is no risk of colliding with the pushers of the first trolley conveyor. It can be performed independently of pusher movement.

As shown in FIG. 6, a portal frame 18 for supporting the rotating rail 17 is fixed to the lower end of a vertical shaft 35 which is rotatably and vertically supported on the support frame 27, and a ring-shaped frame attached to the upper end of the vertical shaft 35 A plurality of support rollers 38 supporting a cam surface 37 formed at the lower part of the periphery of the cam 36 are pivotally supported on the support frame 27, and are connected to the vertical shaft 35 by the cylinder unit 21 via a lever 39 connected to the vertical shaft 35. When rotated, the vertical shaft 35 may be raised and lowered simultaneously by the inclination of the cam surface 37 to control the height of the rotary rail 17.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway side view showing an example of a trolley conveyor, Fig. 2 is a plan view showing an intersection of the trolley conveyor according to an embodiment of the present invention, Fig. 3 is a side view of the same, and Fig. 4 is a route switching section. FIG. 5 is a partial cross-sectional plan view of the device, FIG. 5 is a vertical cross-sectional side view of the same portion, and FIG. 6 is a side view of essential parts showing a modification. 2... Trolley, 3... Trolley guide rail,
4... pusher, 4a-4c... pusher moving route, 5... pusher guide rail, 15...
First trolley conveyor, 16... Second trolley conveyor, 17... Rotating rail, 19... Vertical fixed shaft, 20... Rotating boss, 21... Cylinder unit, 29... Cam groove, 30... Cam roller, 3
6...Ring-shaped cam, 38...Support roller.

Claims (1)

[Claims] 1. At the intersection of the first and second trolley conveyors, each of which has a trolley travel path and a pusher travel path for trolley propulsion, the pusher travel path of the first trolley conveyor is arranged consecutively at regular intervals with respect to the trolley travel path. At the same time, the pusher movement path of the second trolley conveyor is separated or detoured at the intersection, and a rotating rail is provided at the intersection to selectively connect the trolley movement paths of both trolley conveyors by rotation, The height of the rotating rail located at the position connecting the trolley movement paths of the two trolley conveyors is increased to a position where collision between the trolley of the second trolley conveyor and the pusher of the first trolley conveyor moving on this rotating rail can be avoided. A route switching device for a trolley conveyor intersection, comprising means for setting the trolley moving route of the first trolley conveyor at a height lower than the height when connecting the trolleys, and automatically changing the height of the rotating rail as it rotates.