JPH0640403Y2 - Emergency stop device for self-propelled carrier - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a self-propelled carriage using a linear motor as a drive device, and more particularly to an emergency stop device for a self-propelled carriage that can travel in three dimensions.

[Conventional technology]

This type of self-propelled carriage is a linear motor LIM fixed to a carrier having traveling wheels that engage with traveling rails.
The secondary side (moving element) receives a moving magnetic field from the primary side (stator unit) of the LIM arranged along the traveling rail at a predetermined interval, and acts on the secondary side at this time. It is driven by an electromagnetic force (driving force) in the direction of the traveling rail. The self-propelled carriage that has passed through one stator unit and received the driving force reaches the next passing stator unit. Until it does, it runs by inertia.

[Problems to be solved by the device]

This type of self-propelled carrier usually does not have a power source itself, and since electric exchange with the ground side is performed in a limited section such as a standby station, it is vertical from the horizontal part of the traveling rail. LIM while running to the club and running vertically
When a power failure occurs in the power source that supplies power to the stator unit, the self-propelled carrier is in an uncontrolled state, runs out of control, and collides with a preceding or following self-propelled carrier. There is a problem that the self-propelled carrier is damaged, and the position of the self-propelled carrier is unknown even when the car is stopped, and it takes time and labor to restart the system. Therefore, an uninterruptible power supply may be installed side by side, but the device requires a large installation space and its maintenance is difficult.

The present invention has been made to solve the above-mentioned problems, and it is possible to reliably prevent the self-propelled carrier truck from being substantially out of control due to the occurrence of power failure or other abnormal conditions, and to improve safety and reliability as compared with the conventional one. It is an object of the present invention to provide an emergency stop device for a self-propelled carriage that can be improved.

[Means for Solving the Problems]

In order to achieve the above object, the present invention is capable of elastic pressure contact with a non-horizontal portion of a traveling rail on which a self-propelled carrier travels, at a predetermined interval in the rail direction, and on a rail facing surface of a predetermined member of the self-propelled carrier. A brake mechanism is provided for each brake roll while disposing a plurality of brake rolls on the brake roll, and the brake roll is engaged with the above-described self-propelled carriage that descends,
It is configured to be connected to the braking mechanism.

[Action]

According to the present invention, the self-propelled carriage during vertical traveling is in an uncontrolled state, the falling traveling is started, and the brake roll which is press-contacted with a predetermined member of the self-propelled conveyor is connected to the braking mechanism. As a result, the self-propelled transporting vehicle is decelerated while being decelerated, and a runaway is prevented.

〔Example〕

 An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 is a traveling rail, which is a horizontal portion on the ground.
1A, vertical part 1B, and horizontal ceiling part 1C form a continuous solid rail. For stations 2 and 3, the station number is No. N, respectively.
In the standby station of No. N + 1, the former is near the end of the horizontal portion 1A on the vertical portion 1B side, and the latter is the ceiling horizontal portion 1C.
Is in the vicinity of the vertical portion 1B side end. Reference numeral 4 is a self-propelled carrier, and as shown in FIG. 2, a carrier 5 having a substantially U-shape.
At least eight wheels (for example, four front wheels and four rear wheels, one of which is not shown) 6 attached to the vehicle are held to hold the traveling rail 1 so that the traveling rail 1 can travel. The carrier LIM2, which is the secondary side of the LIM, is attached to the side of the traveling rail 1 of the carrier 5. 7A is an iron core and 7B is a conductor. The plurality of LIM1 is a stator unit that is the primary side of the LIM, and is arranged along the traveling rail at predetermined intervals, and when facing the mover LIM2, a small gap is provided. Are supported by the support frame 8 so as to face each other. Although not shown in the figure, a speed sensor and a position sensor are attached to the self-propelled carriage 4, and the main bodies of both sensors are arranged at a plurality of appropriate positions along the traveling rail 1. It is set up.

In the vertical portion 1B of the traveling rail 1, a plurality of brake devices 9 are arranged at predetermined intervals L along the rail direction. The brake device 9 is, as shown in FIG.
A brake frame 12 that supports both ends of the brake shaft 10 via bearings 11, a brake plate 10 and a brake plate 13 fixed to one end,
A brake mechanism consisting of a spring 14 interposed between the friction plate 13A and the outer surface of the frame of the brake frame 12, a brake roll supported on a brake shaft 10 via a bearing 15 (hereinafter, simply,
16), a unidirectional rotating clutch 17 disposed between the roll 16 and the brake shaft 10, and the brake frame
A plurality of slide rods 18 erected on the vertical portion 1B pass through 12 and the brake frame 11 has a pressing spring 19 interposed between the vertical portion 1B side facing surface and the vertical portion 1B. Due to the anti-vertical part
The roll 16 is urged toward the 1B side to hold the roll 16 on the conductor 7B of the LIM 2 at a height at which the roll 16 can be pressure-contact engaged with the conductor 7B at a predetermined pressure. The roll
The peripheral surface of 16 is covered with an elastic member 16A. The predetermined distance L is smaller than the rail-direction length of the conductor 7B of the moving element LIM2.

Next, the operation of this device will be described.

It is assumed that the power source of the LIM is normal and the self-propelled carriage 4 is traveling toward the horizontal ceiling portion 1C of the vertical portion 1B of the traveling rail 1. In the vertical portion 1B, the LIM 2 of the self-propelled carriage 4 is in contact with the roll 16 and presses the roll 16 in the vertical portion 1B direction to rotate the roll 16 by frictional force. This rotation direction is the direction in which the one-way rotation clutch 17 is not engaged, that is,
Since it is in the free rotation direction shown in FIG. 4, the self-propelled carriage 4 drives the roll 16 but ascends the vertical portion 1B and travels to the horizontal ceiling portion 1C without receiving the braking action.

Now, it is assumed that the self-propelled carriage 4 has passed from the horizontal ceiling portion 1C to the vertical ceiling portion 1B. Here, when a power failure occurs in the power source of the LIM, the electromagnetic coupling between the stator unit LIM1 and the mover LIM2 disappears, so the self-propelled carriage 4 that was in the vertical portion 1B of the traveling rail 1 drops and travels under its own weight. However, the LIM 2 of the self-propelled carriage 4 is frictionally engaged with the roll 16, and this time, a rotational force in the opposite direction to the above is applied to the roll 16. As a result, the one-way rotating clutch 17 is engaged, and the above-mentioned rotational force acts on the brake shaft 10 via the roll 16, and the brake shaft 10 has a spring 14 and a brake plate.
Since it is subjected to the action of the spring brake composed of the friction plate 13A and the friction plate 13A, the free rotation of the roll 16 is restricted, and the self-propelled carriage 4 is decelerated by the braking action. Self-propelled carrier 4
While descending, it is subjected to the braking action each time it engages with the roll 16, and therefore travels to the ground horizontal portion 1A at a predetermined speed or less. After that, the vehicle is stopped at the standby station 2. The standby station 2 usually has a position detector (not shown), and it is possible to confirm that the self-propelled carriage 4 is in the standby station 2 by this position detector. Therefore, the self-propelled carriage 4 is never lost and the system can be easily restarted.

In addition, in the present embodiment, even when the self-propelled carriage 4 is normally traveling,
While traveling down the vertical portion 1B, the self-propelled carriage 4 travels to the ground horizontal portion 1A while receiving the braking action.

In the above embodiment, the brake device is arranged on the vertical portion 1B of the traveling rail 1, but it may be arranged on the rail inclined portion where the self-propelled carriage 4 may run out of control even if it is not vertical. is there.

[Effect of device]

As described above, the present invention travels by frictionally engaging the brake rolls in the non-horizontal portion of the traveling rail, and the brake rolls are merely free rolls for the upward traveling of the self-propelled carriage, but fall traveling. When it is connected to the braking mechanism, it exerts a braking action on the self-propelled transport cart, so it prevents the self-propelled transport cart from falling and running out of control. It is possible to significantly improve reliability and safety by eliminating the problem, and it is possible to stop the runaway self-propelled carrier truck at almost a predetermined section and to reliably grasp its position. It can be easily restarted.

[Brief description of drawings]

1 is a layout diagram showing an embodiment of the present invention, FIG. 2 is a block diagram of the LIM in the above embodiment, FIG. 3 is a block diagram of the brake device in the above embodiment, and FIG. 4 is a brake in the brake device. It is a figure for explaining operation of a roll. 1 ... Running rails 2, 3 ... Standby station, 4 ...
… Self-propelled carrier, 8 …… Support frame, 9,23 …… Brake device, 13 …… Brake plate, 13A, 21 …… Friction plate, 14
...... Spring, 16 …… Brake roll, 17 …… One-way rotation clutch, 19 …… Pressing spring.

Claims (2)

[Scope of utility model registration request] 1. A transport system including a self-propelled transport vehicle having a linear motor as a drive device, wherein the self-propelled transport vehicle is provided on a non-horizontal portion of a traveling rail on which the self-propelled transport vehicle travels, with a predetermined spacing in the rail direction. A plurality of brake rolls arranged so as to be capable of elastic pressure contact with the rail-opposing surface of a predetermined member of the transport carriage,
And each of the brake rolls has a corresponding braking mechanism, and the brake roll is connected to the braking mechanism when engaged with the self-propelled transporting carriage that descends and travels. Emergency stop device. 2. The emergency stop device for a self-propelled carriage according to claim 1, wherein the brake roll is connected to the brake shaft of the braking mechanism via a one-way rotating clutch.