JP2715823B2 - Conveyor with hanging lifting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is provided with a lifting device which is suspended by a plurality of lifting belts which can be rolled up and extended from a transporting train which is guided by guide rails and travels by itself. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transport train, and more particularly to a transport train equipped with a suspension elevating device for detecting a breakage of the suspension belt.

[0002]

2. Description of the Related Art In this type of transport train, in order to detect that a descent of a descending suspension elevating device is stopped unexpectedly by something, a slack of a specific suspension belt is detected. Detecting means for detecting is provided. The belt slack detection means can also detect that the suspension belt provided with the belt slack detection means is unexpectedly broken for some reason, but it detects all breaks in the suspension belt. In order to obtain it, all the suspension belts must be provided with a slack detecting means, and a substantial increase in cost cannot be avoided, which is not practical.

[0003]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and its features are indicated by reference numerals in the embodiments described later. The transport train with a suspension elevating device according to the present invention comprises a plurality of suspension belts 10a to 1 which can be wound up and fed out from the transport train 1 which is guided by the guide rail 2 and runs by itself.
In a transport train with a lifting device that is formed by suspending the lifting device 7 via the 0d, the respective suspension belts 10a to 10a to
At least one electric wire (three electric wires 12a to 12c in the embodiment) is built in the entire length of the belt 10a, and the electric wires (two electric wires 1 in the embodiment) built in each of the belts 10a to 10d.
2a, 12b), a power supply 18 is connected to a detector 19 for detecting the open / closed state of a circuit.

[0004] In the configuration of the present invention according to claim 2,
The power supply 18 is provided on the transport train 1 side, and the at least one suspension belt 10d is provided with at least two electric wires.
This (in the embodiment, three electric wires 12a to 12c) are built in,
Using the two electric wires (in the embodiment, two electric wires 12a and 12b built in the suspension belt 10d), the power supply 1 is used.
8 is connected to an electric device (conveyed object transfer conveyor 30) on the suspension elevating device 7 side.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. In FIGS. A driving wheel 3 for rolling running on a lower horizontal rail portion 2a of one installed guide rail 2 and a direct drive motor 4 for rotating the driving wheel 3; And a backup shaft contacting the bottom surface of the lower horizontal rail portion 2a of the guide rail 2 at two places in front of and behind the drive wheel 3. Horizontal roller 6
a, 6b. Therefore, the transport train 1 can be self-propelled along the guide rails 2 by rotating the drive wheels 3 with the motor 4.

In the transport train 1, a suspension elevating device 7 is suspended by an elevation drive means 8 so as to be able to ascend and descend.
The suspension elevating device 7 is a conventionally well-known device provided with a transfer conveyor for transferring the transferred object W in the horizontal direction to the right and left with respect to the traveling direction of the transfer train 1. The lifting / lowering drive means 8 comprises four suspension belts 10a to 10d, one end of which is fixed to and wound on four hoisting / unwinding pulleys 9a to 9d built in the transport train 1, and the suspension lifting / lowering device. 7 and the pulleys 9a to 9
d is rotated by a direct drive motor 11 to wind and suspend the suspending belts 10a to 10d, so that the suspending / raising / lowering device 7 is moved upward (home position) close to the bottom of the transport train 1. To the transfer level of the transferred object W.

In the transport train 1 with the above-mentioned lifting / lowering device, as the above-mentioned respective lifting belts 10a to 10d, as shown in FIG. Are buried integrally over the entire length of the belt in a state where they are insulated from each other and are arranged in parallel at appropriate intervals in the belt width direction. Thus, the ends of the electric wires 12a to 12c protrude from the end of the belt and the connection terminals 13a to 13c, 14a to 14c.
Is installed.

As shown in FIG. 5, one end of each of the suspension belts 10a to 10d is fixed to and wound around the pull-up and pull-out pulleys 9a to 9d, and the other end is connected to the suspension elevating device 7 as shown in FIG. The pulleys 9a to 9d
Four slip rings 16a to 16d are attached to the free end of the drive shaft 15 for driving the motor. Among them, shoes (or brushes) 17a and 17b slidingly contacting the two slip rings 16a and 16b. DC power supply 18 via
And the other two slip rings 16c,
16d has a shoe (or brush) 1 sliding on it.
A relay switch 19 as a circuit open / closed state detection detector is connected via 7c and 17d.

Then, of the three electric wires 12a to 12c built in each of the suspension belts 10a to 10d, two electric wires 12a
A closed circuit is formed as shown in FIG. 5 so that the relay switch 19 is connected to the DC power supply 18 via all of the terminals a and 12b. That is, one ends of the two electric wires 12a and 12b of the suspension belt 10a are connected to the slip rings 16c and 1c.
6d by wires 20 and 21 and the suspension belt 10
d, one ends of the two electric wires 12a, 12b are connected to the slip rings 16a, 16b by wires 22, 23, and one ends of the two electric wires 12a, 12b of the suspension belts 10b, 10c are connected to each other by wires 24, 25. The other end of the electric wire 12b of the suspension belt 10a and the other end of the electric wire 12a of the suspension belt 10b are connected to each other by a wiring 26, and the other end of the electric wire 12b of the suspension belt 10b is connected to the other end of the suspension belt 10b. Belt 10c
And the other end of the electric wire 12a is connected to each other by a wiring 27,
The other end of the electric wire 12b of the suspension belt 10c and the other end of the electric wire 12a of the suspension belt 10d are connected to each other by wiring 28, and the other end of the electric wire 12a of the suspension belt 10a and the suspension belt 10d And the other end of the electric wire 12b is connected to each other by a wiring 29.

The two electric wires 12a and 12b of the suspension belt 10d are connected to a DC power supply 18 from the suspension elevating device 7.
In order to use the feeder line for the drive motor 30 of the conveyer for transferring the transferred object mounted on the
The other ends of the two electric wires 12a and 12b are wires 31 and 32, respectively.
Is connected to the conveyor drive motor 30 by the
In addition, two electric wires 12 of each of the suspension belts 10a to 10d.
The wires 20 to 25 connected to one ends of the a and 12b are on the drive shaft 15 of the hoisting and unwinding pulleys 9a to 9d to which one ends of these suspension belts 10a to 10d are fixed.
Alternatively, it is disposed in the drive shaft 15.

According to the above construction, the pulleys 9a to 9d are driven to rotate by the drive shaft 15, and the suspension belts 10a to 10d are wound up and fed out, thereby raising and lowering the suspension lifting device 7. However, regardless of the operation of winding and unwinding the suspension belts 10a to 10d, the relay switch 19 is connected to each of the two electric wires 12 built in all the suspension belts 10a to 10d.
Since it is connected to the DC power supply 18 via all of a and 12b, it is always in an energized and excited state. Even if one of the suspension belts 10a to 10d has a built-in electric wire 12a,
When at least one of the switches 12b is cut or cut, a circuit for connecting the relay switch 19 to the DC power supply 18 is opened, so that the relay switch 19 is demagnetized. Since the state of the transport train 1 is switched to the state, the abnormality of the suspension belts 10a to 10d is detected by utilizing the change of the contact point of the relay switch 19 at this time. An emergency stop of the lower elevating device 7, an emergency stop of the conveyed object transfer conveyor of the hanging elevating device 7, activation of an alarm, and other appropriate measures can be automatically performed.

Each of the suspension belts 10a to 10d has one
It is also possible to connect the DC power supply 18 and the relay switch 19 by using a series electric wire group in which these electric wires are built in and these electric wires are connected in series. Also, a DC power supply 18
For example, a battery mounted on the transport train 1 can be used, but it is also possible to supply power to the transport train 1 from a power supply line laid on the guide rail 2 via a current collecting unit. Of course, an AC power supply can also be used.

[0013]

As described above, according to the transport train equipped with the lifting device according to the present invention, the detector (embodiment) detects that the electric wire built in the belt suspending the lifting device is cut off. Can be detected by the relay switch 19), a situation in which a wire built in the suspension belt is cut, in other words, an accident such as a cut accident or a break in the suspension belt itself occurs. When this occurs, the detector can automatically detect this, and based on this detection, necessary accident countermeasures can be taken automatically and promptly.

Further, it is not necessary to attach a detector to each of the suspension belts, and only a suspension belt having a built-in electric wire is used. Since this can be reliably detected, it can be implemented at very low cost.

In particular, according to the configuration of the present invention, the power supply forming the belt cutting accident detection circuit and the electric wire built in the belt are used also as the power supply and the power supply line for the electric device on the suspension elevating device side. The economic effect is great.

[Brief description of the drawings]

FIG. 1 is an overall side view of a transport train with a front side of an outer case removed.

FIG. 2 is a vertical sectional front view in which a suspension elevating device is omitted.

FIG. 3 is a plan view showing the structure of the lifting drive means and a backup horizontal shaft roller.

FIG. 4 is a partially cutaway plan view of the suspension belt.

FIG. 5 is a circuit diagram illustrating an embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Conveyance train 2 Guide rail 3 Traveling drive wheel 4 Direct drive motor 7 Suspension elevating device 8 Elevation driving means 9a Pulley for lifting and feeding a suspension belt 9b Pulley for raising and feeding a suspension belt 9c Hanging belt 9d Pull-up pull-out pulley 9d Pull-up pull-out pull-down pulley 10a Hanging belt 10b Hanging belt 10c Hanging belt 10d Hanging belt 11 Direct drive motor 12a Built-in belt wire 12b Built-in belt wire 12c Built-in belt Electric wire 15 Pulley drive shaft 16a Slip ring 16b Slip ring 16c Slip ring 16d Slip ring 17a Shoe or brush 17b Shoe or brush 17c Shoe or brush 17d Shoe or brush 18 DC power supply 9 relay switch (open or closed state detector circuit) 30 drives the motor of the object to be conveyed transfer conveyor (electrical apparatus suspension lifting device)

Claims (2)

(57) [Claims] The present invention relates to a transport train equipped with a lifting device, wherein the lifting device is suspended via a plurality of lifting belts which can be wound up and pulled out from a transport train which is guided by guide rails and is self-propelled. , At least one for each suspension belt
A transport device with a lifting / lowering device, in which the wires are built in over the entire length, and a built-in wire is used for each belt, and a detector for detecting the open / close state of the circuit is connected to a power supply. 2. The power supply is provided on the side of a transportation train, and at least one suspension belt is provided with at least two electric wires.
2. The transporting train with a hanging lift device according to claim 1, wherein the power supply is connected to an electric device on the side of the hanging lift device using the two electric wires.