JPH03148366A - Carrying device - Google Patents

Abstract

PURPOSE:To enhance storage capacity by allowing a drive running body to transmit low speed drive running force to a truck running body in the low speed carrying section, and also allowing a tramcar type drive running body to drive the truck running body at high speeds in the high speed carrying section after transshipping has been made to the high speed running section. CONSTITUTION:A truck 2 and connecting stems 3 connected in front and in rear thereof are provided with a front trolley 4, load trolleys 5 and 5 and a rear trolley 6, and these trolleys 4 through 6 are freely moved along a free rail 8 via rollers 7a and 7b. In addition, the main body 21 of a drive running body is also provided along a guide rail 12 set in line underneath the free rail 8 in such a way as to be freely moved so that the rotation of a vertical roller 23 by a running drive motor 25 allows the main body to run. Running force in the high speed carrying section H, is transmitted to the trolley 2 by the engagement of a projected piece 31 provided for the main body 21 with an actuated pawl 10 provided for the trolley 2. On the other hand, in the low speed section L, the trolley 2 is run by the engagement of a chain 66 and the actuated pawl 10.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention transmits the driving force of a traveling chain to a transport vehicle that can move freely on free rails, and also transmits the driving force of a traveling chain to a transport vehicle that is movable on a free rail. The present invention relates to a conveyance device in which driving force transmission can be freely engaged and detached, and which can increase the conveyance speed in a predetermined section to increase the storage margin between each process, or can properly correct an incorrect conveyance order.

(Prior Art) Conventionally, when a workpiece is conveyed by a trolley, a so-called inverted conveyor is sometimes used in which the trolley is conveyed by a drive trolley of a drive chain. The device is known.

This inverted conveyor 51 is designed so that even if the work W to be conveyed is a long object that protrudes back and forth longer than the length of the cart 52, it can be stored without the work W colliding with each other. Connecting rods 53.53 are provided at the front and rear of the truck 52, and the connecting rods 53 and the truck 5-
2. Front trolley 54. A load trolley 55°55 and a rear trolley 56 are able to run freely on free rails 58 laid along the transport path. In other words, each of these trolleys 54, 55, and 56 has four vertical rollers 57a in pairs on the left and right, front and back, and two horizontal rollers 57a in pairs at the front and back that fit between the rails and serve as steady rests. A roller 57b is provided, and the front trolley 54 is provided with a driven pawl 60 that can swing up and down about the swing shaft 59, and the rear trolley 56 is provided with an operating piece 61 for stopping the following front trolley. It is provided.

On the other hand, below this free rail 58 is a spear, free rail 5
Guide rails 62 are arranged in parallel along line B, and each of these rails is supported by support members 63 at predetermined intervals of 58.62Gt.

The guide rail 62 has a pair of vertical rollers 6 on the front, rear, left and right sides.
A drive trolley 64 fitted with a drive trolley 64 is engaged to be able to run along the guide rail 62, and the drive trolley 64 is attached at a predetermined pitch interval to a chain 66 running below. And this driving trolley 6
The upper end side of 4 can be engaged with a driven pawl 60 of the front trolley 54.

In this inverted conveyor 51, the drive trolley 64 of the chain 66 that runs endlessly engages the driven pawl 60 of the front trolley 54 at its upper end to convey the trolley, and at a predetermined position, a drive trolley 64 (not shown) is engaged with the driven claw 60 of the front trolley 54. The rear end side of the driven pawl 60 is swung upward by the engagement release device to cut off the transmission of driving force from the drive trolley 64, and the trolley 52 is stopped. Then, when sowing is started again, the engagement release device is released and the rear end side of the driven claw 60 is swung downward by its own weight, and the upper end side of the driving trolley 64 that is traveling is engaged.

In addition, in the storage line, the driven pawl 60 of the leading truck is swung upwardly by an engagement release device (not shown) at a predetermined location, cutting off the transmission of driving force and stopping the truck. The following conveyance truck 52 moves toward the stopped leading truck, but the driven pawl 60 of the front trolley 54 of the trailing truck 52 collides with the tapered surface of the stop operation piece 61 of the rear trolley 56 of the leading truck 52. Then, the rear end side of the driven pawl 60 is swung upward to disengage from the drive trolley 64 and stop. In this way, the following carts are successively disengaged from the drive chain and stopped, thereby preventing them from colliding with each other.

On the other hand, such an inverted conveyor has the advantage of being able to transport a workpiece within a range of about 100 mm per drive motor, and is simple in construction and inexpensive, but on the other hand, the transport speed is slow and the workpiece is not easily transported. There is a problem that it takes time to perform pranks when the distance is long.
When transporting at high speed, use Utility Model Publication No. 1115
High-speed electric train transport devices such as No. 111 are also known.

In the case of this device, a drive motor and a speed reducer are attached to the body of the transport vehicle, and a drive wheel is attached to the output shaft that projects from the speed reducer, and the device runs on a track laid along the transport route. Since each independent truck body has a drive motor, it is possible to convey at high speed. For example, the maximum speed of the above-mentioned inverted conveyor is 1.
The maximum speed is 80~100 compared to about 8■/min.
It has a conveyance capacity of about val.

(Problem to be Solved by the Invention) However, when such a conveyance device is to be used, for example, in an automobile manufacturing process, it is desirable to have a conveyance line that flows at a constant tack according to the work in each process, and the In this sense, an inverted conveyor in which drive trolleys are arranged at a constant pitch along the drive chain is suitable, but it has the problem that when the distance between processes becomes long, there is no storage space within the conveyance path. Ta. In other words, if it is determined that, for example, there is a storage capacity of 15 transport vehicles between processes B and D in Figure 8, and four vehicles are normally in operation at all times, a problem with the ring ring will occur in process D. Then,
In process B, which is the previous process, only 11 machines were able to operate. As the transport distance becomes longer, the number of moving machines increases, which reduces the storage margin.If the transport speed can be increased, the number of moving machines will decrease, increasing storage capacity and improving productivity. The situation was such that it was possible. On the other hand, between this B process and D process, the above-mentioned Utility Model Publication No. 63-1659
If you try to simply connect a high-speed electric transport system like No. 9, a mounting device will be required at each connection point of the transport path, which will reduce the storage capacity spatially and further increase the equipment cost. There was a problem in that the device became complicated.

Also, even if workpiece 5, which was defective in step A in Figure 8, is repaired at repair shop C, which branches off from the main line of the conveyance line, and returned to the main line again, the line flow order changes and the workpiece order is 6, 7, etc. 8
, 9.5, which caused problems such as, for example, causing incorrect assembly in the D process, complicating parts management, requiring rank conversion work in the automated process, and reducing quality stability.

(Means for Solving the Problems) In order to solve the problems, the present invention provides a transport device that is equipped with a free rail for running a bogie running body and a guide rail for running a driving running body, in which a bogie is transported at a low speed. A low-speed conveyance section and a high-speed conveyance section are provided, and the guide rail of the high-speed conveyance section is a power supply rail type, and the drive running body is an electric train type, and the free rail of the low-speed conveyance section and the free rail of the high-speed conveyance section are The bogie running body can be moved freely.

In addition, the train-type drive running body is equipped with a current collector that contacts the power supply rail and a drive motor for drive running.
A locking device that can be freely engaged and detached from the bogie running body is provided.

(Function) In the low-speed conveyance section, the driving traveling body transmits low-speed driving force to the bogie traveling body, and after handing over to the high-speed conveying section, the electric vehicle type driving traveling body of the high-speed conveying section transmits the low-speed driving force to the bogie traveling body at high speed. Drive. As a result, the number of moving machines in long-distance transport sections can be reduced, increasing storage capacity, and, for example, by configuring a high-speed bypass path in a part of the main transport line, it is possible to restore workpieces whose transport order is out of order to their normal order. I can do it.

(Example) An example of the conveying device of the present invention will be described based on the attached drawings.

Figure 1 is an explanatory diagram of a conveyance line showing a configuration example of the conveyance device of the present invention, Figure N2 is an explanatory diagram showing adjacent parts of a low-speed conveyance section and a high-speed conveyance section, and Figures 3 and 4 are trains of the high-speed conveyance section. Figure N3 is a side view, and Figure 4 is a longitudinal sectional view taken from the front.

As shown in FIG. 1, the conveying apparatus of the present invention is designed to bypass the storage S between the B process and the D process, for example ((), (
0) high-speed conveyance section (H,) or D process configured between;
As in the example of the high-speed conveyance section (lh) constructed between (^) and (d) of the long-distance conveyance path in process E, the low-speed conveyance section and the high-speed conveyance section are incorporated into the same conveyance line. The structure is such that a transfer device or the like is not required.

That is, in the conveying device of the present invention, the low-speed conveying section uses an inverted conveyor with a driving chain as described in the prior art, and the high-speed conveying section uses a driving chain as shown in FIGS. 3 and 4. An electric vehicle-type driving body is used instead of a chain, and the configuration of the trolley side is such that both the low-speed transport section and the high-speed transport section can be transported as is with one trolley.
The configuration is exactly the same as the conventional example. That is, a front trolley 4, a road trolley 5.5, and a rear trolley 6, each serving as a bogie running body, are provided on the bogie 2 and a connecting rod 3 connected to the front and rear of the bogie 2, respectively. , a free rail 8 comprising vertical rollers 7a and horizontal roller roughs b.
It is said that it is possible to move along the lines. A driven claw 10 is provided below the front trolley 4 and is swingable in the vertical direction about a swing shaft 9, and a stop operation piece 11 is mounted below the rear trolley 6.

The guide rail 12 arranged below the free rail 8 is
The frame-shaped support members 13 are attached to support members 13 provided at predetermined intervals, that is, as shown in FIG.
The guide rail 12 is attached to the support portion 13a extending from the inner surface of the
The power supply rail part 12a is supported, and this power supply rail part 1
2a is provided with an upper rail 14 and a lower rail 15 on the upper and lower sides, respectively.

A main body 21 of the driving traveling body is engaged with the guide rail 12 so that it can run freely along the guide rail 12.

This main body 21 includes a frame body 22 formed in a U-shaped cross section, and vertical rollers supported by the frame body 22 and provided in a pair at the front and rear, sandwiching the upper rail 14 and the lower rail 15 from above and below, respectively. 23.23-..., and a plurality of horizontal rollers 24, 24-... are provided in the front and rear, sandwiching the upper rail 14 and the lower rail 15 from the left and right, respectively,
Among the vertical rollers 23, the output shafts of drive motors 25 for driving AC servo or frequency conversion type (inverter type) are connected to predetermined vertical rollers 23 at predetermined positions.

Further, the frame body 22 is provided with a control section 26 for controlling the drive moder 25, and a collector 27 for sending power and signals to the control section 26. In addition to contacting the side surface of the power supply rail section 12a, the current collector 2f and the guide rail 12 are configured with 2fi type circuits for a power system and a control system, respectively.

The main body 21 configured in this way runs along the guide rail 12 with the vertical rollers 23 rotated by the drive of the drive motor 25.
* may be used as a binion, and a rack may be formed on the guide rail 12 side.

On the other hand, a protruding piece 31 as a retaining device is provided on the upper part of the frame body 22.
is provided. This projecting piece 31 approaches the driven pawl 10 on the truck side from behind and automatically engages with the driven pawl 10 while pushing up the rear end side. The trolley 2 may be configured to be movable up and down, and may be engaged with the truck 2 side, or the combination truck 2 side may be configured as a set of trolleys from which the truck is suspended and travels.

Next, the control mechanism of this conveying device will be explained using FIG. 5. This control mechanism is configured to include a safety device to control acceleration, deceleration, etc. of the traveling body body 21, and a detection member 33 detects the position of the body 21 traveling on the guide rail 12.
are arranged at predetermined pitches S along the guide rail 12. The detection member 33 is constructed of, for example, a limit switch or a phototube, and is connected to a controller X such as a sequencer, and the controller X is connected to the power supply rail section 12a of the guide rail 12. Therefore, when the detection member 33 detects the position of the traveling body main body 21, the signal is sent to the controller
This controller X transmits the control signal to the power supply rail section 12a.
to control the speed, etc. of the traveling body body 21. Further, this detection member may be provided on the bogie running body body 21 to confirm its own position. For example, it emits sound waves, radio waves, light waves, etc. toward the bogie running body body in front, and detects the reflected signal. The receiver may be used to control the operation.

As described above, the high-speed conveyance section LtJ configured in this way
It is installed as shown in the example between ((), (b) or (^), jin) in the figure, but the scale contact part of the low-speed conveyance section and the high-speed conveyance section H is provided with a 'second A button 34 as shown in the figure is provided. The free rail 8 of the high-speed transport section H and the free rail 8 of the low-speed transport section are common, and the traveling body main body 21 runs at high speed on the guide rail 12 of the high-speed transport section H.
However, when the protruding piece 31 is engaged with the front trolley '4 on the dolly side to transport the dolly, and it stops at the stop position (phantom), the protruding piece 31 and the driven pawl 10 are separated by an engagement release device (not shown). is disengaged, and only the traveling body body 21 returns to its circumference along the guide rail 12.The carriage 2 remaining on the free rail 8
is pushed onto the free rail 8 of the low-speed conveyance section by the pusher 34e, and is conveyed by the conventional drive chain 66 in line B. Also, in the reverse case, that is, when feeding from the general conveyance section to the high speed conveyance section, the same structure is used.
Furthermore, in the case of a detour branch road or a connecting road such as between R) and (■) in FIG. 1, almost the same configuration can be used.

(Effects of the Invention) As described above, the conveyance device of the present invention combines a high-speed conveyance section and a low-speed conveyance section in one conveyance line, and is configured so that the traveling bodies on the bogie side can run on the same type of free rail. There is no need for special loading equipment, and it can be transported quickly even on long-distance transport routes. In addition, this increase in transport speed reduces the number of moving machines between processes, so that, for example, only one machine is required to move between processes that have a storage capacity of 15 machines, thereby making it possible to use the remaining buffer of 14 machines. You can get it.

Furthermore, by bypassing the high-speed conveyance section that acts as a detour at a predetermined location, even if a trouble occurs with the workpiece and the conveyance order changes temporarily, it can be easily corrected, and incidental work such as order change can be avoided. It does not increase the amount of work and does not lead to work errors.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of a conveyance line showing an example of the configuration of the conveyance device of the present invention, Fig. 2 is an explanatory diagram showing adjacent parts of a low-speed conveyance section and a high-speed conveyance section, ¥S3 figure, and Fig. 4 are an explanatory diagram of a high-speed conveyance section. Fig. 3 is a side view, Fig. 4 is a vertical sectional view from the front direction,
FIG. 5 is an explanatory diagram showing the control mechanism of the driving traveling body, FIG.
FIG. 7 shows the configuration of a conventional example and a low-speed conveyance section, FIG. 6 is a side view, FIG. 7 is a longitudinal sectional view from the front, and FIG. 8 is an explanatory diagram of the conveyance line of the conventional example. In the figure, 2 is a trolley, 4, 5.6 are trolleys, 8 is a free rail, 10 is a driven pawl, 11 is a stop operation piece, 12 is a guide rail, 21 is a driving body main body, and 27 is a collector. electronic,
52 is a trolley, 58 is a free rail, 62 is a guide rail, 64 is a drive trolley, 66 is a chain, and W is a workpiece.

Claims (2)

[Claims] (1) A free rail for running the bogie running body of the transport vehicle is provided along the transport path, and the drive running body runs on another guide rail installed in parallel near this free rail, so that the drive running body In a conveying device configured to convey a truck by freely transmitting running driving force to the truck traveling body, this device includes a low-speed conveying section that conveys the truck at a low speed and a high-speed conveying section that conveys the truck at a high speed. The guide rail for running the driving traveling body of the transport section is of the power supply rail type, and the driving traveling body is of the electric train type, and the free rail of the low speed transporting section and the free rail of the high speed transporting section are configured so that the bogie traveling body can be freely transferred. A conveying device characterized by: (2) The electric train type drive running body is characterized by being equipped with a current collector that contacts the power supply rail and a drive motor for running drive, and also having an engagement device that removably engages with the bogie running body. The conveying device according to claim 1.