JPH09110114A - Electric car provided with elevatable carriage - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily carry out connection between a belt burying electric wire and an electric car side wire without using any conductive ring and any collector ring when a control signal is transferred/received between the electric car and an elevatable carriage via an electric wire buried in a belt hanging the elevatable carriage. SOLUTION: One side ends 29 of coil type electric wires 27, 28 freely fitted in a driving shaft 17 are fixed on the electric car frame side and electrically connected to wires 42, 43 on the electric car side, while the other side ends are fixed in belt winding/feeding drums 18, 19 and electrically connected to electric wires 26 buried in elevatable carriage hanging belts 20a, 20d whose one side ends are locked in the drums 18, 19, and according to the normal/ reverse rotation of the drums 18, 19 for winding/feeding the belts, the number of winding and the diameters of the coil type electric wires 27, 28 on the driving shaft 17 are varied.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric train with a lifting carriage which is supported by a guide rail and is self-propelled, and the lifting carriage is suspended via a belt which can be wound and unwound.

[0002]

2. Description of the Related Art In the case where a motor-driven load transfer means such as a running fork is mounted on the lifting carriage, wiring for connecting a power supply line or control signal line on the train side to a motor or various sensors on the lifting carriage. It is considered to use an electric wire embedded in a belt that suspends the elevating carriage.

In this case, a conductive ring is provided on the belt winding and feeding drum provided on the train side so as to be concentric with the rotation axis, and the conductive ring and the buried electric wire of the belt whose one end is fixed to the drum. And the electric wire wired on the train frame side and the buried electric wire of the belt are electrically connected via the conductive ring and the current collector slidingly contacting the conductive ring.

[0004]

In the conventional structure as described above, the number of wirings is required for the conductive ring and the current collector, and not only the initial cost is high, but also the inspection and maintenance are performed so that the improper conduction does not occur. Since it has to be performed regularly, there is a drawback that the running cost is high.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to provide a train with an elevator carriage that can solve the above-mentioned conventional problems, and the means will be referred to in the embodiments described later. When indicated by reference numerals, the guide rail 2
A drive shaft 17 that is linked to a motor 22 and drums 18 and 19 attached to the drive shaft 17, and one end of the drums 18 and 19 are locked to the train 1 supported by The wound belts 20a to 20d
Is provided and the lifting carriage 3 is suspended by the belts 20a to 20d, and the belts 20a to 20d are provided with lifting carriages in which electric wires 26 for exchanging control signals between the train 1 and the lifting carriage 3 are embedded. In a train, coil-shaped electric wires 27 and 28 are loosely fitted to the drive shaft 17, one end 29 of the coil-shaped electric wires 27 and 28 is fixed to the train frame side, and wirings 42 and 4 on the train side are provided.
3 is electrically connected to the drum 18, and the other end 31 is the drum 18, 1
9 is electrically connected to the electric wires 26 embedded in the belts 20a and 20d which are fixed to the drums 18 and 19 and one ends of which are fixed to the drums 18 and 19. With the rotation, the number of windings and the diameter of the coil-shaped electric wires 27, 28 on the drive shaft 17 are changed.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION A preferred embodiment of the present invention will be described below with reference to the accompanying drawings. In FIG. 1, 1 is an electric train supported by guide rails 2 and 3 is an electric train.
It is a lift carriage that can be lifted up and down. 4
Is a rack, and is provided with a large number of load storage compartments 5 partitioned in the horizontal and vertical directions parallel to the traveling direction of the train 1.

As shown in FIGS. 2 to 4, the train 1 has a driving trolley 6, a driven trolley 7, and both trolleys 6 and 6.
The drive trolley 6 includes a drive frame 9 that rolls on the guide rail 2, a motor 10 that rotates the guide wheel 2, and a guide rail. A vertical axis roller 11 for preventing vibration and a current collecting unit 13 slidably contacting a power supply line 12 laid on the side surface of the guide rail 2 are provided for the driven trolley 7. A rolling wheel 14 and a vertical axis roller 15 for holding the guide rail 2 for preventing vibration are provided.

The lift carriage 3 is lifted and lowered by lift driving means 16 mounted on the body frame 8 of the train 1. The lifting drive means 16 is shown in FIGS.
As shown in FIG. 2, drums 18 and 19 fixed to both end portions of one horizontal and horizontal drive shaft 17 and two drums 18 and 19 formed in parallel with each other in the axial direction.
Two belt winding portions 18a, 18b and 19a, 19
4 wound in the same direction with one end locked to b
Belts 20a to 20d of book and each belt 20a to 20d
Guide pulleys 21a to 21d that are turned downward,
The drive shaft 17 is composed of a motor 22 with a speed reducer that drives the drive shaft 17 in the central portion in the longitudinal direction to rotate in the forward and reverse directions.

However, the two outermost belts 20a and 20d are located at positions near the left and right ends of the front end (or rear end) of the main body frame 23 constituting the lifting carriage 3 via the belt coupling members 24a and 24d. The two belts 20b and 20c located inside are suspended at positions near the left and right ends of the rear end (or front end) of the main body frame 23 via belt coupling members 24b and 24c.

The elevating carriage 3 includes belts 20a-20.
The main body frame 23 is suspended by d, and a running fork 25 provided on the central portion of the main body frame 23 is movable in the lateral and lateral directions. In addition, as shown in FIG.
.About.20d each include a plurality of electric wires 26 embedded along the belt length direction at appropriate intervals in the belt width direction. These buried electric wires 26 are belts 20a to 20
It is also a reinforcing wire for d.

On the other hand, as shown in FIGS. 6 to 8, the drive shaft 1
7 is a coiled electric wire (curl cord) 27, 28 having a plurality of core wires on both left and right sides of the motor 22 with a reducer.
Is loosely fitted. Both of the coiled electric wires 27 and 28 are wound in opposite directions, and are used in the motor 2 with a reducer.
The end 29 on the side adjacent to 2 is fixed to the main body frame 8 of the train 1 via the bracket 30, and the other end 31 is attached to the central partition walls 18c and 19c of the drums 18 and 19 by the stopper 32.
Has been fixed through. And this coiled wire 2
Electric wire portion 33 extending from the drum side end 31 of 7, 28
Is on the opposite side of the through holes 34 provided in the central partition walls 18c and 19c of the drums 18 and 19, that is, the drums 18 and 19
Is led out to the inside of the belt winding portions 18a and 19b on the outer side of and is connected to one of the connectors 35 and 36 which can be freely connected and disconnected.

As shown in FIGS. 7 and 8, the belt winding portions 1 are fixed to the end portions of the belts 20a to 20d with respect to the belt winding portions 18a to 19b of both the drums 18 and 19, respectively.
The belt end portion 38 introduced inside from the slit 37 provided in the body portion of 8a to 19b is fixed to the belt fixing plate 39 fixed to the drums 18 and 19 and the belt fixing plate 39 with a set screw 40. The belt 20 is wound around the belt winding portions 18a and 19b outside the drums 18 and 19 by being pressed and sandwiched between the belt 41 and the plate 41.
A required number of embedded electric wires 26 extend from the end portions 38 of the a and 20d, and the plurality of embedded electric wires 26 are connected to the other of the connectors 35 and 36. That is, the belt 20
All or part of the embedded electric wire 26 of a is connected to a plurality of core wires of the coil-shaped electric wire 27 via the connectors 35 and 36 inside the drum 18, and all or part of the embedded electric wire 26 of the belt 20d is the drum. Connector 35 on the inside of 19,
It is connected to a plurality of core wires of the coil-shaped electric wire 28 via 36.

As described above, the coil-shaped electric wires 27, 29
Buried electric wires 2 of belts 20a, 20d connected to the core wire of
6 is led out from the end of the belt on the side of the lifting carriage 3 and is connected to various sensors on the side of the lifting carriage 3 via appropriate connectors and wiring.
Each core wire 28 is connected to a control panel 44 (see FIG. 3) provided on the train 1 via wirings 42 and 43 (see FIG. 6) on the train 1 side.
(Indicated by phantom lines), and the control board 44 can control the running fork 25 and the like on the side of the elevator carriage 3. The belt-embedded electric wire 26 can be used for supplying power to a motor mounted on the side of the lifting carriage 3 such as a driving motor of the running fork 25 as long as there is no problem in capacity.

Further, in the above embodiment, only the buried electric wires 26 of the two belts 20a and 20d at both ends are used for transmitting / receiving the control signal and feeding the electric power.
It is possible to use any one or more of the buried electric wires of the belts of 20 to 20d.

As shown in FIGS. 1, 2 and 4, a plurality of steel pipes 50 having different diameters are expanded and contracted within a certain range in order to prevent the ascending and descending carriage 3 from rocking back and forth and left and right. A telescopic multi-tube 51, which is freely fitted, is provided between the train 1 (main body frame 8) and the elevating carriage 3 (main body frame 23), for example, at two front and rear ends of the elevating carriage 3 in the train traveling direction. Can be inserted. In this case, when a power feeding line for a motor for driving the running fork 25 or the like mounted on the side of the lifting carriage 3 is separately arranged without using the belt-embedded electric wire 26, the power feeding line is formed into, for example, a coil shape. It is desirable that the telescopic multi-tube 51 be passed inside or loosely fitted outside.

The procedure for loading and unloading the rack 4 with respect to the cargo storage compartment 5 will be described. The drive wheel 9 of the train 1 is rotationally driven by the motor 10 to drive the train 1 along the guide rails 2 and the train 1 Is stopped at a position corresponding to the load storage section 5 of the loading / unloading work target. On the other hand, the motor 22 of the lifting drive means 16 causes the drums 18 and 19 to
The belts 20a-
20d is fed out, and the raising / lowering carriage 3 is lowered to the loading level or the shipping level with respect to the load storage section 5 of the loading / unloading work target.

On the other hand, in the coil-shaped electric wires 27, 28 on the drive shaft 17 shown in FIG. 6, when the drive shaft 17 rotates in the belt winding direction, the drum-side end portion 31 (see FIG. 7) has the drums 18, 19. Coil-shaped electric wires 27, 28 that rotate integrally with the drive shaft 17 are wound around the drive shaft 17 in the direction in which they are wound, and the belts 20a-20
d is a belt winding portion 18a to 19 of the drums 18 and 19
The coiled electric wires 27 and 28 are configured to have a minimum diameter and a maximum number of windings so that the coiled electric wires 27 and 28 come close to the drive shaft 17 when the elevator carriage 3 is wound up on the b side and is in the upper limit.

Therefore, from such a state, the drive shaft 17 rotates in the belt feeding direction as described above, and the lift carriage 3 moves.
6, the drum-side end 31 (see FIG. 7) rotates integrally with the drums 18 and 19 in the rewinding direction around the drive shaft 17, and the coiled electric wires 27 and 28 are shown by phantom lines in FIG. As described above, when the diameter increases and the number of windings decreases away from the peripheral surface of the drive shaft 17, the diameter is maximum and the number of windings is minimum when the elevator carriage 3 is lowered to the lower limit.

When the train 1 is stopped at a predetermined position and the lift carriage 3 is stopped at a predetermined level, the running fork 25 on the lift carriage 3 is operated and the lift carriage 3 is used as a unit for picking up or unloading the load. The load W on the lifting and lowering carriage 3 (running fork 25) is transferred into the load storage section 5 on the rack 4 side, or vice versa.
The load W supported in the load storage section 5 on the side is transferred to and from the elevator carriage 3 (running fork 25).

When the loading / unloading work is completed, the motors 22 of the lifting / lowering drive means 16 rotationally drive the drums 18 and 19 in the belt winding direction to drive the belts 20a to 20d.
And raise and lower the carriage 3 as shown by the solid line in Figure 1.
Is raised to the ascending limit level immediately below the train 1. At this time, the coil-shaped electric wires 27, 28 whose drum-side end portions 31 (see FIG. 7) rotate integrally with the drums 18, 19 around the drive shaft 17 in the winding direction are close to the peripheral surface of the drive shaft 17. As the diameter decreases and the number of turns increases,
When the elevating carriage 3 is lowered to the upper limit, the diameter is minimum and the number of windings is maximum as shown in FIG.

The number of belts for suspending the raising and lowering carriage 3 so that they can be raised and lowered, the number of drive shafts for the belt winding and feeding drum, and the like are not limited to those in the above embodiment, and a belt in which an electric wire is embedded only in a specific belt. Can also be used.

[0022]

INDUSTRIAL APPLICABILITY The electric train with the lifting / lowering carriage of the present invention which can be implemented as described above uses the electric wire embedded in the belt for suspending the lifting / lowering carriage for exchanging control signals between the train and the lifting / lowering carriage and for supplying electric power. However, the electrical connection between this belt-embedded electric wire and the wiring on the train side does not use a conductive ring and a current collector that rotate integrally with a belt winding and unwinding drum as in the conventional case, and one end thereof is on the drum side. A coil-shaped electric wire loosely fitted to the drum drive shaft with the other end fixed to the electric train frame side is used to electrically connect the belt-embedded electric wire to the electric wire on the electric train side. Therefore, the number of parts is reduced, the structure is very simple, and even if special inspection and maintenance is not performed, there is a possibility that an electrification failure will occur between the wiring on the train side and the belt buried wire. No.

Therefore, as compared with the conventional structure using the conductive ring and the current collector as described above, it can be carried out at a very low cost even in a situation where a large number of electric wires (core wires) are required. No running cost is required because no special inspection and maintenance is required.

[Brief description of the drawings]

FIG. 1 is an overall front view.

FIG. 2 is a side view of a train with a lifting carriage.

FIG. 3 is a cross-sectional plan view showing the train and a rack.

FIG. 4 is a front view showing a state in which a lifting carriage of the train is lowered along with a part of a rack.

FIG. 5 is a side view showing an elevating and lowering driving means for an elevating and lowering carriage.

FIG. 6 is a plan view showing the lifting drive means.

FIG. 7 is an enlarged sectional view taken along line AA of FIG.

FIG. 8 is an enlarged sectional view taken along line BB of FIG.

[Explanation of symbols]

 1 Train 2 Guide Rail 3 Lift Carriage 4 Rack 8 Train Body Frame 16 Lift Drive Means 17 Drive Shafts 18, 19 Drums 18a-19b Belt Wraps 20a-20d Lift Carriage Suspension Belt 25 Running Forks 26 Belt Buried Wires 27, 28 Coiled wire 35, 36 Connector 39 Belt fixing plate 42, 43 Train side wiring

Claims (1)

[Claims] 1. A train supported by guide rails, a drive shaft linked to a motor, a drum mounted on the drive shaft, and one end of which is locked to the drum so that the train can be wound up and unwound. A raising and lowering carriage provided with a belt, the raising and lowering carriage is suspended by the belt, and an electric wire for transmitting and receiving a control signal between the electric train and the raising and lowering carriage is embedded in the belt. Is a coil-shaped electric wire loosely fitted, one end of the coil-shaped electric wire is fixed to the train frame side and is electrically connected to the wiring on the train side, and the other end is fixed to the drum and one end of the drum. It is electrically connected to an electric wire embedded in the locked belt, and the coil shape on the drive shaft is accompanied by forward and reverse rotation of the drum for winding and unwinding the belt. The lifting carriage with the train that was to the number of turns and the diameter changes of the line.