JPH0532271B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION This invention relates to a carrier stop device in a floor-type multiple trolley conveyor.

BACKGROUND ART Conventionally, in a dual trolley conveyor, a carrier stop device has been provided on the carrier introduction side conveyor before the merging or branching portion of the carriers.

Problems to be Solved by the Invention However, in most conventional carrier stopping devices, the carrier and pusher dog are disengaged from both the left and right sides of the conveyor line, which results in large devices and high equipment costs. I had a problem with getting it on.

An object of the present invention is to solve the above-mentioned problems of the prior art, to be able to reliably stop a carrier at a required point on a conveyor line, and to be able to do so by disposing a carrier stopping device only on one side of the conveyor line. The object of the present invention is to provide a carrier stopping device for a floor type multiple trolley conveyor which is very compact and therefore has low equipment costs.

Means for Solving the Problems In order to achieve the above object, the present invention includes a free trolley of a carrier running on a free line, which is equipped with a pair of left and right engaging dogs that can swing freely, and The pusher dog has an engaging protrusion projecting downward, and disengagement wings projecting to the left and right sides, and the power trolley running on the power line is equipped with the pusher dog. Each pusher dock is configured to engage with an engagement convex portion of at least one of the left and right engagement dogs of the free trolley, and is configured to engage with an engagement convex portion of at least one of the left and right engagement dogs of the free trolley, and to engage with at least one of the left and right sides of the free line. a stopper that is movable in and out of the movement line of the wing of the engagement dog and held at a position above the pusher dog; an engagement release section that holds the wing of the engagement dog in a raised state on the stopper; The gist of this invention is a carrier stopping device for a floor-type multiple trolley conveyor, which is provided with a wing locking convex portion at the front end.

Embodiments Next, embodiments of the present invention will be described based on the drawings.

In this specification, "front" refers to the direction of movement of the carrier, and "left and right" refers to the left and right sides of this direction of movement.

In Figures 1 to 7, a double trolley conveyor 2 installed on a floor 1 is equipped with a free line F for guiding a carrier 3 and a power line P placed below this. . Carrier 3 is 4
It is equipped with two free trolleys 4, 5, 6, and 7, and an article mounting table 9 is attached to the two middle free trolleys 5, 6 via vertical connecting rods 8, 8, and this is used to store intermediate products for automobile assembly. Articles 10 such as the following are placed thereon. The front free trolley 4 and the rear free trolley 7 are connected to intermediate free trolleys 5, 6 via horizontal connecting rods 11,11. Each free trolley 4, 5, 6, 7 has a trolley body 12
A pair of vertical rollers 13 and a pair of horizontal rollers 14 are attached to the front and rear sides of the trolley, and a connecting fitting 15 having a U-shaped cross section is attached to the upper end of the center of the trolley body 12. .

The free line F is composed of a pair of free rails 16 having a U-shaped cross section and arranged opposite to each other, and each free trolley 4, 5, 6, 7
Vertical rollers 13 are placed on the lower horizontal walls 16a of the free rail 16, and the same horizontal rollers 14 are arranged between the upper horizontal walls 16b and guided by these upper horizontal walls 16b.

The front free trolley 4 has a pair of left and right brackets 17 protruding from the front of its trolley body 12.
A pair of left and right engaging dogs 18 and 19 are attached to the front end of the bracket 17 so as to be able to swing freely. The engagement dogs 18 and 19 are fixed by the same pivot 20 at the front end thereof, and have engagement convex portions 21 and 21 projecting downward at the rear end thereof, and have engagement projections 21 and 21 protruding downward at the rear end thereof. The disengagement wings 22, 2 protrude outward from each other.
3 is provided. Also, the engaging dogs 18, 19
At the rear end there is a coasting prevention convex portion 24, 2 that protrudes downward.
4 are provided. The coasting prevention protrusions 24, 24 are arranged with a predetermined distance from the engagement protrusions 21, 21, and are smaller than the engagement protrusions 21, 21. In addition, these coasting prevention protrusions 24, 24
Slanted walls 24a, 24a are formed on the rear surface of. Abutments 25, 25 are provided at the front ends of the engagement dogs 18, 19 beyond the pivot 20, which abut against the front end 12a of the trolley body 12 when the engagement dogs 18, 19 hang down due to their own weight. be.

The rear free trolley 7 is provided with an accumulation cam 26 that projects downward from the trolley body 12 and extends rearward.

The power line P is constituted by a pair of power rails 27 which are arranged opposite to each other and have a U-shaped cross section. The trolley includes a pair of vertical rollers 30 attached to both front and rear ends, and a pusher dog 31 provided at the center of the trolley body 29 in an upwardly projecting manner. The trolley body 29 is the drive chain 3
The power trolley 2 is connected by a pin 34 to connecting convex pieces 33 provided at predetermined intervals on the power trolley 2.
8 Pushsha Dog 31 is Drive Chain 3
Move with 2.

As shown in FIGS. 1 to 4, in the trolley conveyor, when the pusher dog 31 approaches the front free trolley 4 of the carrier 3 from the rear, the front inclined wall 31a of the pusher dog 31 moves toward the engaging dog. 18,
19 coasting prevention convex portions 24, 24 rear inclined wall 2
This corresponds to 4a and 24a. As a result, the engagement dog 1
8 and 19 are slightly swung upward, the pusher dog 31 passes under the coasting prevention protrusions 24 and 24, and is engaged with the engagement protrusions 21 and 21, and the carrier 3 is moved upward. It is towed and transported by the dog 31.

Here, pusher dog 31 and engagement dog 1
8, 19, the engaging dogs 18, 19 should not swing.
The shapes of 8 and 19 and the position of the pivot 20 are determined.

Note that the pusher dog 31 and the engagement dog 18,
If the speed of the carrier 3 suddenly increases due to collision with the pusher dog 31 and the engagement dogs 18, 19 on the rear side thereof, the coasting prevention protrusions 24, 24 of the pusher dog 31 and the engagement dogs 18, 19 on the rear side of the pusher dog 31 engage with each other. This prevents the carrier 3 from coasting.

As shown in FIG. 4, the pusher dog 31 can be engaged with both the engaging dogs 18 and 19, or when the power line P is biased with respect to the free line F, as will be described later. It may be engaged with either one of the engagement dogs 18, 19.

As shown in FIGS. 6 and 7, the leading carrier 3
If the trailing carrier 3 catches up with the
The engagement dogs 18 and 19 of the front free trolley 4 of the trailing carrier 3 engage the rear free trolley 4 of the leading carrier 3.
It is lifted by the disengagement cam 26 of the trolley 4, whereby the engagement dogs 18, 19 and the pusher dog 31 are disengaged, the trailing carrier 3 stops, and the leading carrier 3 Accumulates on the rear side.

In FIG. 8, the merging device and branching device of the carrier 3 are shown together, and are located on the right and left sides of the main free line F1 and the merging free line F2, respectively, in a portion near the rear end of the merging connection 35. , a carrier stop device 54, 54 according to the invention is arranged. Further, a carrier stop device 54 according to the present invention is arranged on the left side of the main free line F1 in a rearward portion of the branch connection 36.

In the merging device of the carrier 3, a straight merging free line F2 is connected to the left side of the gently curved main free line F1. At the connection part 35 of both free lines F1 and F2, the main power below the main free line F1 is connected.
Line P1 is center line 1 of main free line F1
The merging power line P2 below the merging free line F2 is shifted to the left of the center line 2 of the merging free line F2.
After passing through the connecting portion 35, the line P2 bends sharply to the left and is separated from the free line F2. Also, the connection part 3 of both free lines F1 and F2
5, a merging switch 37 is arranged.

On the other hand, in the branching device of the carrier 3, a straight branch free line F3 is connected to the right side of the gently curved main free line F1, and at the connecting part 36 of both free lines F1 and F3. , the main power below the main free line F1.
Line P1 is center line 1 of main free line F1
It has been shifted to the left. The branch power line P3 is drawn into the lower side of the branch free line F3 from the right side near the rear of the connection part 36, and at the connection part 36, the branch power line P3 is drawn to the right side of the center line 3 of the branch free line F3. It is shifted and arranged. Further, a branching switch 38 is arranged at the connecting portion 36 of both free lines F1 and F3.

In addition, the merging switch 37 and the branching switch 3
They have exactly the same structure as No. 8 except for their orientations.

Further, as shown in FIG. 8, between the merging device and the branching device, the main power line P1 is shifted from the right side to the left side of the center line 1 of the main free line F1. - The dog 31 moves from the engagement protrusion 21 of the right engagement dog 19 of the carrier 3 to the engagement protrusion 21 of the left engagement dog 18
The carrier 3 is only engaged while sliding sideways, and the running of the carrier 3 is not hindered at all.

9-11 show details of the carrier stop device 54 according to the present invention.

In the figure, the carrier stop device 54 is provided with a stopper 55 which is movable on the line of movement of the wing portions 22, 23 of the engagement dogs 18, 19 and is held at a position above the pusher dog 31. The stopper 55 is plate-shaped, and includes an engagement release portion 56 that holds the wing portions 22 and 23 in a raised state, and a high wing portion locking convex portion 57 that locks the wing portions 22 and 23 at the leading edge thereof. A low detent protrusion 58 is provided at the trailing edge to prevent the wings 22, 23 from moving backwards. This detent convex portion 58
There is a guide slope wall 5 that slopes downward toward the rear side.
8a is provided. The stopper 55 includes a front guide 59 having a U-shaped cross section and a rear guide 60 having an L-shape cross section, which are arranged on one side of the free rail 16.
The stopper 55 is slidably guided by the piston rod 62 of the hydraulic cylinder 61, and is moved back and forth in a direction perpendicular to the free line F as the piston rod 62 of the hydraulic cylinder 61 moves in and out.

As shown in FIGS. 9 and 11, the stopper 55
protrudes, and this tip is the front free trolley 4.
When the engagement dogs 18, 19 are on the line of movement of the wings 22, 23, the free
The wings 22 and 23 of the engagement dogs 18 and 19 that move together with the trolley 4 are connected to the guide inclined wall 58 of the stopper 55.
It rides on the upper surface of the disengagement part 56 of the stopper 55 as guided by a. As a result, the engagement protrusions 21, 21 of the engagement dogs 18, 19 and the pusher dog 31 are disengaged, and
Immediately thereafter, the leading edges of the wing parts 22 and 23 hit the high locking protrusion 57 of the stopper 55 and the engagement dog 1
8, 19 and the front free trolley 4 integrated therewith, as well as the carrier 3, stop on the spot. Note that even if the carrier 3 tries to move backward due to the impact caused by the collision between the engagement dogs 18 and 19 and the stopper 55, the detent convex portion 5 on the rear edge of the stopper 55
Since the trailing edges of the wings 22, 23 of the engagement dogs 18, 19 engage with the carrier 3, there is no possibility that the carrier 3 will move backward.

Effects of the Invention According to the present invention, the carrier stopping device in the floor-type compound trolley conveyor has a free stop system as described above.
A pair of left and right engagement dogs 18, 19 that can swing freely on the free trolley 4 of the carrier 3 running on line F.
Each of the engagement dogs 18 and 19 has engagement protrusions 21 and 21 that protrude downward, as well as disengagement wings 22 and 2 that protrude to the left and right sides.
3, the power trolley 28 running on the power line P is provided with a pusher dog 31, and each pusher dog 31 engages at least one of the left and right engaging dogs 18, 19 of the free trolley 4. Engagement protrusion 2 of one engagement dog 18, 19
1, 21, and the wings 22, 2 of the engagement dogs 18, 19 are attached to at least one of the left and right sides of the free line F.
It is possible to appear and appear on the line of movement of 3, and
Stopper 5 held at a position above dog 31
5 is arranged, and the stopper 55 has an engaging dog 18,
an engagement release portion 56 that holds the wing portions 22 and 23 of No. 19 in a lifted state, and a wing portion locking convex portion 5 at the front end of the disengagement portion 56;
7, it is possible to reliably stop the carrier 3 at a required location on the conveyor line, and it is only necessary to place the carrier stop device on one side of the conveyor line. It is very compact and has the effect of reducing equipment costs.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a partially cutaway side view of a floor-type multiple trolley conveyor, FIG. 2 is a sectional view taken along the line of FIG. 1, and FIG.
The figure is a partially enlarged side view of Fig. 1, Fig. 4 is an enlarged sectional view along the line of Fig. 3, Fig. 5 is a perspective view of the engagement dog, and Fig. 6 shows the action of the disengagement cam. FIG. 7 is an enlarged sectional view taken along the lines of FIG. 6, FIG. 8 is a schematic plan view showing the merging and branching device, and FIG. 9 is an enlarged sectional view taken along the lines of FIG. 8. , shows the state before the engagement dog is locked by the stopper. FIG. 10 is an enlarged sectional view of the same, showing the state after the engagement dog is locked by the stopper. FIG. 11 is a partially enlarged plan view corresponding to FIG. 9. 1...Floor, 2...Double trolley conveyor, 3...
...Carrier, 4...Front free trolley, 16...
...Free rail, 18, 19... Left and right engagement dogs, 21... Engagement protrusion, 22, 23... Disengagement release wing, 24... Coasting prevention protrusion, 26... Cam,
27...Power rail, 28...Power trolley, 31...Putsha dog, 32...Drive chain, 35...Merge connection, 36...Branch connection, 37, 38...Switch Machine, 54...Carrier stop device, 55...Stopper, 56...Engage release portion, 57...Wing portion locking protrusion, 58...Detent protrusion, F, F1, F2, F3...Free・Line, P, P1, P2, P3...Power line,
1, 2, 3...center line.

Claims (1)

[Claims] 1 The free trolley 4 of the carrier 3 running on the free line F is provided with a pair of left and right engaging dogs 18, 19 that can swing freely, and each engaging dog 18, 1
The power line P
The power trolley 28 that travels is provided with pusher dogs 31, and each pusher dog 31 engages at least one of the left and right engagement dogs 18, 19 of the free trolley 4. The engaging dogs 18, 19 are adapted to be engaged with the convex portions 21, 21, and can be freely retracted from the movement line of the wing portions 22, 23 of the engaging dogs 18, 19 on at least one of the left and right sides of the free line F. - A stopper 55 held at a position above the dog 31 is disposed, and the stopper 55 has an engagement release part 56 that holds the wings 22, 23 of the engagement dogs 18, 19 in a raised state, and a wing part at the front end of the engagement release part 56. A carrier stop device in a floor-type multiple trolley conveyor, which is provided with a locking protrusion 57.