JPS6037872Y2 - Conveyance device - Google Patents

Description

[Detailed description of the invention] This invention provides a driven pin on the front end side of the transport vehicle that can be raised and lowered to engage with the pusher of the driving chino, and on the rear end side.
The present invention relates to a storable transport device which is provided with a means for raising a driven pin of a following transport vehicle to a position where it is removed from a pusher, the main purpose of which is to:
To enable smooth and reliable storage by preventing the chattering phenomenon of a following conveyance vehicle when the following conveyance vehicle is stopped by a preceding stop conveyance vehicle.

One embodiment will be described below based on illustrative drawings. In FIG. 1, 1 is a transport vehicle, 2 is a driven pin provided at the front end of the vehicle and is movable up and down, and 3 is a cam protrusion projecting rearward from the rear end. It is.

Reference numeral 4 denotes a drive chino that moves along a fixed path under the floor surface, and is provided with pushers 5 that push the driven pin 2 at appropriate intervals.

As shown in FIGS. 2 and 3, the driven pin 2 protrudes from a guide groove 7 provided in the floor surface 6 into the movement path of the pusher 5, and the driven pin 2 is located near the upper end of the driven pin 2. The driven pin 2 is lifted upward from the guide groove 7 by a lever 8 that is rotatably mounted around the lever 8, and the driven pin 2 is pulled out above the floor by rotating the lever 8 and locking it in the lever receiver 9. It can be held in a raised state, and in this state, the carrier 1 can be removed from the movement path and moved freely.

Reference numeral 10 denotes a bumper frame projecting from the center of the front end of the transport vehicle 1, and the driven pin 2 passes vertically through the interior of the bumper frame 1°.

Reference numeral 11 denotes a movable body that is pivotally supported in the bumper frame 1o by a horizontal horizontal axis 12 at a position in front of the driven pin 2, and is integrally connected to the triangular swing plate 13 at the center by a connecting bolt 14. a pair of left and right swinging arms 15 that swings in a direction;
Cam driven rollers 18, 19, 20 are supported between each arm by a common pivot shaft 17 at the lower ends of the pair of swing arms 15, 16, and the central triangular swing plate 13 The link pivot member 21 attached to the driven pin 2 at the rear end and a position above this is the link 2.
It is connected by 2.

23 and 24 are the pivot axes of the link 22.

The driven pin 2 is lowered by its own weight to a position where the stopper ring 25 attached thereto comes into contact with the driven pin support member 26, and can be engaged with the pusher 5 at this lower limit position.

When the driven pin 2 is at the lower limit position, the pair of swing arms 15 and 16 hang directly below the horizontal horizontal axis 12 as shown.

The cam protrusion 3 presses the movable body 11 rearward via the horizontal support surface 27 and the cam driven roller 19 when the cam protrusion 3 enters under the movable body 11 of the following conveyance vehicle 1 as shown in FIG. The cam driven roller 19 is placed on the horizontal support surface 2
7, and a protrusion 29 having a slope 28 located at the tip of the horizontal support surface 27 and facing diagonally forward and upward. As shown by the imaginary lines in FIG. 2, the cam driven roller 19 is provided with a length in the front-rear direction that can support the cam driven roller 19 without restraining it in the front-rear direction when the front and rear transport vehicles 1 are in contact with each other.

Reference numeral 30 denotes a contact surface against which the tip of the cam protrusion 3 and a transport vehicle stopper 31, which will be described later, come into contact.

As shown in FIG. 1, when the pusher 5 engages with the driven pin 2 at the lower limit position, the carrier 1 is moved forward along a certain path, but the carrier 1 is stopped on the moving path. If there is a trolley, the cam protrusion 3 of the stopped carrier 1 will relatively enter below the movable body 11 of the movable carrier 1 as shown in FIG. 2 by approaching the stopped carrier 1.

As a result, the cam driven roller 19 rides on the horizontal support surface 27 of the cam protrusion 3, and the movable body 11 is rotated rearward and upward around the horizontal horizontal axis 12 as shown by the imaginary line.

Therefore, the driven pin 2 is pushed upward against its own weight via the link 22 and is separated from the pusher 5.

At the same time, the bumper frame 10 comes into contact with the rear end of the stop transport vehicle 1, and the contact surface 30 contacts the cam protrusion 3, so that the bumper frame 10 automatically stops in a state connected to the stop transport vehicle.

Note that the cam protrusion 3 may be configured to be slightly shorter so that it does not contact the contact surface 3.

Further, the cam protrusion 3 may be configured to have a wide width so that it acts on the three cam driven rollers 18 to 20 at the same time.

Furthermore, the link pivot member 21 can be moved up and down relative to the driven pin 2, and when the link 22 is pushed up, the member 21 can be configured to push up the driven pin 2 via the positioning ring 32 of the lever 8.

Further, in this case, when the driven pin 2 is lifted by the lever 8, the ring 33 fixed to the driven pin 2 pushes up the member 21, causing the movable body 11 to rotate rearward and upward.

In the above-mentioned stopped state, when the front transport vehicle 1 is moved forward, the cam protrusion 3 that had entered under the movable body 11 of the rear transport vehicle 1 escapes from below the movable body 11 to the front, so that the driven pin 2 falls to the lower limit position where it can engage with the pusher 5 due to its own weight, and the movable body 11 swings back to its original state, so that the rear carriage 1 is again driven forward by the pusher 5.

When the bumper frame 10 of the rear moving carrier 1 collides with the front stationary carrier 1 due to inertia, the rear carrier 1 tends to move backward due to the reaction.

At this time, the tip protrusion 29 of the cam protrusion 3 contacts the cam driven roller 19 on its slope 28, pushing the movable body 11 toward the horizontal horizontal axis 12.

That is, when the cam protrusion 3 relatively moves out from under the movable body 11, the protrusion 29 provides resistance, and the movable body 11 comes off backward from above the cam protrusion 3 due to the reactionary backward movement. The driven pin 2 can be prevented from falling again to the pusher engagement position by the contact between the tip protrusion 29 of the cam projection 3 and the cam driven roller 19, so that the rear carriage 1 can be moved to vibrate back and forth. The occurrence of chattering phenomenon can be suppressed.

In addition, when the front-stop conveyance vehicle 1 is forcibly started, the cam driven roller 19 will ride over the tip protrusion 29 of the cam projection 3, and at this time the movable body 11 will move over the horizontal transverse axis 12.
, the driven pin 22 is pushed up by a certain amount via the link 22.

As a result, even if some distortion occurs between the driven pin 2 and the support member 26 or between the driven pin 2 and the guide groove 7,
When the cam protrusion 3 escapes from below the movable body 11, the driven pin 2 reliably and smoothly falls due to its own weight, and the pusher 5
can be engaged with.

In order to automatically stop the leading transport vehicle 1, the movable body 11 is rotated rearward and upwardly by contacting either the left or right cam driven roller, for example, the roller 18, and the stopper 31, which abuts against the contact surface 30, is moved from the transport vehicle It is sufficient if it is provided at the stopping place so that it can appear freely.

If the structure is such that the movable body 11 can be rotated rearward and upward by the stopper 31 at a position laterally away from the center line passing through the movable body 11 and the cam protrusion 3 of the transport vehicle 1, the stopper 31 can be rotated backward and upward. When the leading carriage 1 is lowered or rotated and driven forward by the pusher 5, as soon as the front end protrusion with the contact surface 30 of the carriage 1 passes, the stopper 31 is immediately protruded to complete preparations for stopping the following carriage. I can do it.

When the stopper 31 must be placed on the center line, the stopper 31 cannot be protruded until the cam protrusion 3 at the rear end has passed. At this time, there is a possibility that the following conveyance vehicle will also move naturally as the leading conveyance vehicle moves forward and cannot be stopped by the stopper 31, but if the structure is configured as described above, such inconvenience will not occur.

The conveying device according to the present invention can be implemented as described above, and its characteristics are: (1) the movable body is configured to push up the driven pin when rotating upward and rearward, and the cam The protrusion includes: (1) a horizontal support surface having an appropriate length in the front-rear direction; and (2) a substantially vertical tip that presses the movable body rearward through the cam driven portion and causes the cam driven portion to ride on the horizontal support surface. and (2) a protruding portion having a slope located at the tip of the horizontal support surface and facing diagonally forward and upward.

According to the device of the present invention, the following effects can be obtained.

That is, in the configuration (2) above, compared to a configuration in which the movable body is rotated forward and upward to push up the driven pin, it is necessary to provide an inclined cam surface that faces obliquely backward and upward at the tip of the cam projection. By simply pushing the cam driven part backwards with the tip of the cam protrusion, the movable body can be smoothly and reliably moved in the direction of pushing up the driven pin. The automatic stop action can be performed smoothly and satisfactorily.

In other words, by adopting such configuration (2), the configuration described in (2) above becomes possible, and with this configuration (2), the cam protrusion can be supported while having a horizontal support surface as shown in configuration (2) on the cam protrusion. By shortening the overall length, it is possible to reduce costs and increase strength, and furthermore, as shown in the embodiment, the tip of the cam projection can be used as a contact surface with the following conveyance truck.

Furthermore, with configuration (2), even if the front and rear carriages move relatively back and forth, the driven pin of the rear carriage will remain pushed up as long as the cam driven part of the movable body rests on the horizontal support surface. The action and reaction force in the state where the movable body is supported and stopped on the horizontal support surface does not act in a direction that separates the front and rear transport vehicles from each other.

Moreover, due to the existence of configuration (2), when the cam driven part of the movable body supported on the horizontal support surface moves toward the tip of the cam protrusion (the tip of the horizontal support surface), the cam driven part rides on the slope of the protrusion. At this time, the movable body is in a state of being rotated backward and upward, so the pressing force acting on the movable body from the slope via the cam driven part is directed toward the center of rotation of the movable body. .

That is, the combination of structure (1) and structure (2) makes it possible to strongly prevent the cam driven portion of the movable body that has ridden onto the horizontal support surface of the cam protrusion from easily falling off the horizontal support surface.

For the above reasons, even if the reaction force when the following conveyance vehicle comes into contact with the preceding stopped conveyance vehicle is large, the driven pin of the subsequent conveyance vehicle that has been pushed up and removed from the pusher will reappear due to the backward movement of the following conveyance vehicle due to the reaction. It has now become possible to reliably automatically stop the following conveyance vehicle using the cam protrusion of the preceding stop conveyance vehicle without causing the so-called chattering phenomenon caused by descending into the pusher path and receiving driving force.

Of course, when the preceding stopped conveyance vehicle starts, the cam protrusion is forcibly pulled out from under the movable body of the following conveyance vehicle, so at this time, the cam driven portion of the movable body climbs over the slope of the protrusion and is removed from the cam protrusion. It will be removed.

At this time, the movable body is pushed up slightly backwards and upwards, so
The driven pin is once pushed up and then lowered, ensuring a return to the lowered position.

[Brief explanation of the drawing]

FIG. 1 is a side view showing an embodiment of the present invention, FIG. 2 is an enlarged side view of the main part, and FIG. 3 is a partially cutaway front view thereof. DESCRIPTION OF SYMBOLS 1... Transfer vehicle, 2... Driven pin, 3... Cam protrusion, 5... Pusher 0... Bumper frame, 11... ...Movable body, 12...Horizontal horizontal axis for pivoting the curved rotating body, 13...Triangular rocking plate, 15°16... Rocking arm pair, 18-20... . . . Cam driven roller 22 . . . Link, 29 . . . Tip projection of curved cam projection 3.

Claims (1)

[Scope of utility model registration request] At the front end of the transport vehicle, there is provided a driven pin that can be raised and lowered to engage a pusher moving along a certain path at the lower limit position, and a movable body for pushing up the driven pin that is interlocked and connected to this driven pin. In the conveying device in which a cam protrusion is provided rearwardly protruding to move the movable body of the subsequent conveyance vehicle in the direction of pushing up the driven pin via a cam follower provided at the lower end of the movable body and stop the subsequent conveyance vehicle, the movable body The cam projection is configured to push up the driven pin when pivoting rearward and upward, and the cam protrusion has a horizontal support surface having an appropriate length in the front-rear direction, and the movable body is moved rearward through the cam driven part. a substantially vertical tip surface that presses the cam follower to ride on the horizontal support surface, and a protrusion that is located at the tip of the horizontal support surface and has a slope facing diagonally forward and upward. Conveyance device.