JPH0579542B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a branching device in a floor-type multiple trolley conveyor.

BACKGROUND TECHNOLOGY Generally, it has been known for a long time to arrange a switch machine at a branch part of a carrier in a line where a carrier such as a railway rail or a monorail runs on its own (for example, in Japanese Patent Application Laid-Open No. 49−
(Refer to Publication No. 13882) is a double trolley conveyor consisting of a free line on which the carrier runs and a power line located below this and on which a pusher dog for pulling the carrier runs. The power line is interrupted at the branching point of the carrier, and for this reason, conventionally, a carrier propulsion device operated by a separate driving force has been provided to transport the carrier.

Problems to be Solved by the Invention However, when such a carrier propulsion device is installed in a conveyor line, there is a problem in that the equipment cost is extremely high.

Conventionally, the pusher dog of the trailing carrier is removed from the leading carrier that is stopped at an interrupted portion of the power line, and the leading carrier is pushed and transferred by the pusher dog. However, there was a problem in that it took a long time to transport the carrier as a whole and was not efficient.

It is an object of the present invention to solve the problems of the prior art as described above, and to provide a carrier propulsion device which can perform carrier branching very efficiently and reliably, and which is operated by a separate driving force as in the prior art. It is an object of the present invention to provide a branching device for a floor-type multiple trolley conveyor that does not require the provision of a separate trolley conveyor, has a simple structure, and has a very low equipment cost.

Means for Solving the Problems In order to achieve the above object, the present invention provides a main free line, a branch free line connected to the main free line, and a main free line arranged below both free lines. A selection rail that can freely swing horizontally is placed at the connection between the power line and branch free line, and the main free line and branch free line, and is selectively connected to the main free line or branch free line. This is a branching device for a floor-type compound trolley conveyor equipped with a point machine, and a pair of left and right swingable free trolleys are installed on the free trolleys of the carriers that run on the main free line and the branch free line, respectively. Engagement dogs are provided, and each engagement dog has an engagement convex portion projecting downward and disengagement wings projecting to the left and right sides. Each power trolley running on the line is provided with a pusher dog, and each pusher dog is engaged with the engagement protrusion of at least one of the left and right engagement dogs of the free trolley. The wing portion of at least one of the left and right engaging dogs is mounted on the switch, and the wing portion of at least one of the left and right engaging dogs is placed under the selection rail of the switch, and the engaging dog is lifted up. A disengagement plate is provided to hold the main power line to one side of the center line of the main free line at the free line connection part, and the branch power line It is arranged offset to one side from the center line, and when the selection rail of the point machine is selectively connected to the main free line or branch free line, it runs on the main free line or branch free line. One of the left and right engagement dogs of the free trolley of the carrier is lifted by the disengagement plate of the switch, and the other is engaged with the pusher dog of the main power line or branch power line. , a branching device in a floor-type dual trolley conveyor, in which the carrier is adapted to pass through a free line connection.

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
and a pair of vertical rollers 13 at the front and rear and a pair of horizontal rollers 1 at the front and rear attached to both sides of this.
4, and a connecting fitting 15 having a U-shaped cross section and attached to the upper end of the central portion 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 is 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 behind, the front inclined wall 31a of the pusher dog 31 closes to the engagement 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.

8 to 12 show a branching arrangement for carriers 3 in a dual trolley conveyor according to the invention.

FIG. 8 shows the branching device and the merging device of the carrier 3 together.

In the branching device for the carrier 3 according to the present invention, a straight branch free line F3 is provided on the right side of the main free line F1 having a gentle curve.
is connected, and at the connecting portion 36 of both free lines F1 and F3, the main power line P1 below the main free line F1 is shifted to the left (shifted) from the center line l1 of the main free line F1. It is located. Branch power line P3 is connected to connection 3
6, the branch power line P3 is drawn from the right side under the branch free line F3, and at the connection portion 36, the branch power line P3 is shifted to the right side from the center line l3 of the branch free line F3. Further, a branching switch 38 is arranged at the connecting portion 36 of both free lines F1 and F3. A stopper device 54 is provided on the left side of the main free line F1 in a rearward portion of the connecting portion 36.
is located.

On the other hand, 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. Connection part 3 of both free lines F1 and F2
In 5, the main power line P1 below the main free line F1 is shifted to the right side from the center line l1 of the main free line F1, and
The merging power line P2 below the merging free line F2 is shifted to the left from the center line l2 of the merging free 2-in F2, and the power line P2
2 bends sharply to the left after passing the connecting portion 35 and is separated from the free line F2. Further, a merging switch 37 is arranged at the connecting portion 35 of both free lines F1 and F2. In a portion near the rear end of the connecting portion 35, stopper devices 54, 54 are arranged on the right and left sides of the main free line F1 and the merging free line F2, respectively. Note that the branching switch 38 and the merging switch 37 have exactly the same structure, except for mutually different directions.

13 and 14 show details of the switch machines 38, 37.

In the same figure, the switch machines 37 and 38 are connected to the main free line F1 and the branch free line F3.
(Or a selection rail 40 that is selectively connected to the merging free line F2, and an engagement release plate that is attached in parallel to the lower side of the selection rail 40 via a connecting pin 43 and has the same length as the selection rail 40. 4
1, and a horizontal roller guide plate 42 which is attached in parallel to the upper side of the selection rail 40 via a coupling plate 44 and has a length shorter than that of the selection rail 40. The point machines 38 and 37 are respectively attached to the connecting portions 36 and 35 of both free lines F1 and F3 or F2 by pivots 45 so as to be horizontally swingable. An operating rod 46 is provided on one side of the coupling plate 44. A piston rod 48 of a fluid pressure cylinder 47 is connected to the tip of the operating rod 46, and the piston rod 48 is moved in and out. The machines 38 and 37 are designed to operate automatically.

The selection rail 40 is provided with a V-shaped step 49 in the middle of its length when viewed from above.
Base 40a of selection rail 40 from 9 to pivot joint
has a thick wall, and its upper surface is held at approximately the same level as the upper surface of the lower horizontal wall 16a of the free rail 16, and the remaining tip portion 40 of the selection rail 40
b is made thin, and the upper surface of this is free.
It is maintained at approximately the same level as the lower surface of the lower horizontal wall 16a of the rail 16. Also, the horizontal roller guide plate 4
2 is the upper horizontal wall 16 of the free rail 16.
It is held at approximately the same level as the top surface of b.

The break in the free rail 16 that is common to the free lines F1 and F3 or F2 is at the point machine 3.
8 and 37 are connected by selection rails 40.

As shown in FIG.
It passes over the base 40a of the selection rail 40 at the same level as 6a, but the remaining short length passes over the tip 40b of the selection rail 40 at a slightly lower level.

Next, the operation of the branching device for the carrier 3 according to the present invention will be explained.

First, as shown in FIGS. 9 and 10, when the carrier 3 passes directly through the main free line F1, the branch switch 38 is placed on the right side. Main power line P1 is main free line F
It is shifted to the left with respect to the center line l1 of 1,
Further, the branch power line P3 is shifted to the right with respect to the center line l1 of the branch free line F3. The carrier 3 of the main free line F1 is moved by the engagement of its left-hand engaging dog 18 with a pusher dog 31.

As shown in FIGS. 9 and 15, the switch 38
Beyond the tip of the branch power line P
A high auxiliary rail 51 is provided on the power rail 27 of No. 3. The right-hand engagement dog 19 is lifted by this high secondary rail 51 and then by the disengagement plate 41 of the switch 38, whereby the right-hand engagement dog 19 is lifted from the branch power line P3. It is designed not to engage with the pusher dog 31.

Next, as shown in FIGS. 11 and 12, when the carrier 3 is discharged from the main free line F1 to the branch free line F3, the switch 38 is placed on the left side. The left engagement dog 18 of the carrier 3, which has moved along the main free line F1, has its wing section 22 running aground on the engagement release plate 41 of the point machine 38, so that the left engagement dog 18 of the carrier 3, which has moved along the main free line F1, is moved to the pusher dog of the main power line P1. 31 is disengaged.

The right engaging dog 19 is shown in FIGS. 11 and 15.
As shown in the figure, the switch 38 rides on the high secondary rail 51 near the rear, thereby preventing a side collision between the right engagement dog 19 and the pusher dog 31 of the branch power line P3. being done. Thereafter, the right engagement dog 19 rides on a relatively low secondary rail 52 provided on the left side wall of the power rail 27 following the high secondary rail 51, and connects the pusher of the branch power line P3.
By engaging the dog 31, the carrier 3 is discharged to the branch free line F3.

Note that the low auxiliary rail 52 is provided to eliminate the inconvenience that occurs when there is a speed difference between the carrier 3 discharged from the main free line F1 and the pusher dog 31 of the branch power line P3. be.

Further, a stopper device 54 is disposed on the left side of the main free line F1 near the rear of the switch 38, which stops the carrier 3 of the main free line F1 while switching the switch 38. It is designed to keep you safe. Stopper device 5
The effect of 4 will be described later.

As shown in FIG. 8, between the branching device and the merging device, the main power line P1 is shifted from the right side to the left side of the center line l1 of the main free line F1. The pusher dog 31 moves from the engagement protrusion 21 of the right engagement dog 19 of the carrier 3 to the engagement protrusion 2 of the left engagement dog 18.
The carrier 3 is simply engaged while sliding sideways to the carrier 3, and the running of the carrier 3 is not hindered at all.

16 to 18 show details of the stopper device 54. FIG. The stopper 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 has a plate shape, and the wing portion 2 is attached to the stopper 55.
2, 23 in a lifted state
6, a high wing locking convex portion 57 that locks the wing portions 22 and 23 at its leading edge, and a low detent convex portion 5 that prevents the wing portions 22 and 23 from moving backwards at its trailing edge.
8 is provided. This detent convex portion 58 has a guiding inclined wall 58 whose rear side is inclined downward.
A is provided. Stoppa 55 is a free
The stopper 55 is slidably guided by a front guide 59 having a U-shaped cross section and a rear guide 60 having an L-shaped cross section, which are arranged on one side of the rail 16, and the stopper 55 is connected to a piston rod 62 of a hydraulic cylinder 61. By moving in and out, it moves forward and backward in a direction perpendicular to the free line F.

As shown in FIGS. 16 and 18, the stopper 5
5 protrudes and its tip is on the line of movement of the wings 22, 23 of the engagement dogs 18, 19 of the front free trolley 4, as shown in FIG. 17, it moves together with the free trolley 4. Engagement dog 18,1
The wing portions 22 and 23 of the stopper 55 are guided by the guide inclined wall 58a of the stopper 55.
rides on the upper surface of the disengagement portion 56 of. As a result, the engaging protrusions 21, 21 of the engaging dogs 18, 19
and the pusher dog 31 are disengaged, and immediately thereafter the front edges of the wing parts 22, 23 hit the high locking protrusion 57 of the stopper 55, and the engagement dogs 18, 19 and the front free trolley integrated therewith are disengaged. 4. Furthermore, the carrier 3 stops on the spot.
Note that even if the carrier 3 attempts 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 rear edges of the wings 22 and 23 of the engagement dogs 18 and 19 engage with the rear edges of the wings 22 and 23 of the engagement dogs 18 and 19, the carrier 3 does not move backward.

Effects of the Invention As described above, the present invention has a main free line F1 and a branch free line F1 connected to the main free line F1.
3, the main power line P1 and the branch power line P3 arranged below both free lines F1 and F3, respectively, and the connection part 36 of the main free line F1 and the branch free line F3, and A branching device for a floor-type compound trolley conveyor, comprising a switch 38 having a horizontally swingable selection rail 40 selectively connected to a main free line F1 or a branch free line F3. , the free trolley 4 of the carrier 3 running on the main free line F1 and the branch free line F3, respectively, is provided with a pair of left and right engaging dogs 18, 19 that can swing freely. Engagement convex portions 21, 2 projecting downward
1 and disengagement release wings 22 and 23 protruding to the left and right sides, and a pusher dog 31 is attached to the power trolley 28 that runs on the main power line P1 and the branch power line P3, respectively. is provided, and each pusher dog 31 is connected to both the left and right engaging dogs 1 of the free trolley 4.
At least one engagement dog 1 of 8 and 19
8 and 19, and is arranged under the selection rail 40 of the switch 38, and has both left and right engaging dogs 18, 19. An engagement release plate 41 is provided on which the wings 22 and 23 of at least one of the engagement dogs 18 and 19 are placed and holds the engagement dogs 18 and 19 in a lifted state. The main power line P1 is arranged to be offset to one side from the center line l1 of the main free line F1, and the branch power line P3 is arranged to be offset to one side from the center line l3 of the branch free line F3. When the selection rail 40 of the switch 38 is selectively connected to the main free line F1 or the branch free line F3, the carrier 3 running on the main free line F1 or the branch free line F3 - One of the left and right engagement dogs 18, 19 of the trolley 4 is lifted by the engagement release plate 41 of the switch 38, and the other is engaged with the pusher dog 31 of the main power line P1 or branch power line P3. Since the carrier 3 is made to pass through the free line connection part 36 by being combined, the branching of the carrier 3 can be performed very efficiently and reliably, and moreover, it is possible to branch out the carrier 3 very efficiently and reliably. There is no need to provide a carrier propulsion device operated by a separate driving force, the structure is simple, and the equipment cost is therefore very low.

[Brief explanation of drawings]

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. 7 is an enlarged sectional view along the line of FIG. 6, FIG. 8 is a schematic plan view showing the branching and merging device, FIG. 9 is a partially enlarged schematic plan view of the branching device, and FIG. 10 is an enlarged side view of the conveyor. The figure is an enlarged sectional view taken along the line of FIG. 9, and FIG. 11 is a partially enlarged schematic plan view of the branching device, showing the branched state of the carrier. 12th
The figure is an enlarged sectional view along the line XII-XII in Figure 11, and Figure 13.
The figure is a partially enlarged plan view showing the details of the point machine.
Figure 4 is Figure 13 - arrow view along the line, 1st
Figure 5 is a view along the arrow line of Figure 9 - 16
The drawing is an enlarged sectional view taken along the line of FIG. 8, showing the state before the engagement dog is locked by the stopper. FIG. 17 is an enlarged sectional view of the same, showing the state after the engagement dog is engaged by the stopper. 18th
The figure is a partially enlarged plan view corresponding to FIG. 16. 1...Floor, 2...Double trolley conveyor, 3...Carrier, 4...Front free trolley, 16...Free trolley
Rail, 18, 19... Left and right engagement dog, 21... Engagement protrusion, 22, 23... Disengagement release wing, 24... Coasting prevention protrusion, 26... Cam, 27... Power rail, 28... Power・Trolley, 31... Pusher dog, 32... Drive chain, 35... Merging connection part, 36... Branching connection part, 37, 38... Switch machine,
40... Selection rail, 41... Engagement release plate, 42... Horizontal roller guide plate, 49... Step portion, 51... High sub-rail, 52... Low sub-rail, 54... Stopper device,
55... Stopper, 56... Engagement release portion, 57... Wing locking convex portion, 58... Detent convex portion, F, F1, F
2, F3...Free line, P, P1, P2, P
3...Power line, l1, l2, l3... Center line.

Claims (1)

[Claims] 1 Main free line F1, branch free line F3 connected to it, and both free lines F1
1, the main power and
Line P1 and branch power line F3 and main free line F1 and branch free line F
3, and a switch 38 having a horizontally swingable selection rail 40 which is disposed at the connecting portion 36 of the main free line F1 or the branch free line F3 and selectively connected to the main free line F1 or the branch free line F3. A free trolley 4 of a carrier 3, which is a branching device in a trolley conveyor and runs on the main free line F1 and branch free line F3, respectively.
A pair of left and right engagement dogs 18, 19 are provided which can swing freely, and each of the engagement dogs 18, 19 has engagement convex portions 21, 21 that protrude downward, as well as engagement release portions that protrude to the left and right sides. Wing parts 22, 23
The main power line P1 and the branch power line F3 each have a power line running on the
Trolley 28 is equipped with Pushya Dog 31,
Each pusher dog 31 is connected to the engagement protrusion 21, 21 of at least one of the left and right engagement dogs 18, 19 of the free trolley 4.
The switch 38 is provided with at least one of the left and right engaging dogs 18, 19 disposed below these selection rails 40. The wing portions 22, 23 are placed on the engagement dogs 18, 1.
9 is provided with an engagement release plate 41 that holds the main power line F1 in a lifted state, and the main power line P1 is arranged to be offset to one side from the center line l1 of the main free line F1 at the free line connection part 36,
Branch power line P3 becomes branch free line F
The selection rail 40 of the switch 38 is located off to one side from the center line l3 of the switch 38, and the selection rail 40 of the switch 38
Carrier 3 running on main free line F1 or branch free line F3 when selectively connected to line F1 or branch free line F3
left and right engaging dogs 18, 19 of free trolley 4
One side is lifted by the disengagement plate 41 of the switch 38, and the other is engaged with the pusher dog 31 of the main power line P1 or the branch power line P3, so that the carrier 3 becomes free. A branching device in a floor-type dual trolley conveyor, which is adapted to pass through a line connection 36.