JPH0732311Y2 - Stopping device for carrier truck - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] This invention provides a primary side of a linear induction motor on the ground side and a secondary side on the side of a carriage of a carrier truck using a linear induction motor as a drive source. The present invention relates to a carrier vehicle, and more particularly, to a stopping device for a carrier vehicle that stops the carrier vehicle in normal time and in an emergency.

[Prior Art] In recent years, in factories, warehouses, and the like, a three-dimensional transport system using a linear induction motor (hereinafter referred to as LIM) is becoming widespread. Of the transport systems using this LIM, for example, the one called the ground-based primary system is LI on the track side.
This is a method in which the primary side coils of M are installed at a predetermined interval, the secondary side conductors are installed on the side of the carrier, and the secondary side is run.
In this method, it was installed at a predetermined interval on the track side.
With LIM, it is a method of inertially transferring a carrier truck from one LIM to the next.

FIG. 8 is a sectional view showing an example of the configuration of a conventional carrier truck of this type. In this figure, 1 is a rail (track) made of a material such as aluminum, 2 is a primary coil of a LIM installed on the rail 1 at a predetermined interval, and 3 is the upper and lower inclined surfaces 1a, 1a of the rail 1, respectively. These rollers are short cylindrical rollers that roll, and are provided in pairs, one above the other. Reference numeral 4 denotes a frame of a carrier vehicle, and a secondary side iron core 5 and a secondary side conductor 6 are provided inside the frame 4 so as to face the primary side coil 2 of the LIM. Inside the upper left part of the frame 4, a secondary side of the electromagnetic brake including an armature 10, a guide pin 11 and a return spring 12 is provided. The primary side of the electromagnetic brake including the fixed iron core 15 and the coil 16 is provided at a position facing the secondary side of the electromagnetic brake, that is, at the upper right end surface of the mounting plate 14. FIG. 9 shows a sectional view of the side surface of the electromagnetic brake. Further, the primary side of the electromagnetic brake is provided on a plurality of ground sides at predetermined intervals.

In such a configuration, when the primary coil 2 of the LIM is excited, the traveling magnetic field generated in the primary coil 2 is received by the secondary conductor 6, which causes the transport carriage to move to the rollers 3,3.
Drive on rail 1 by. Then, when the transport vehicle is stopped at a predetermined position, a creep speed command is issued from the LIM control device (not shown). As a result, when the carrier truck comes into the station, the carrier truck is decelerated by reverse braking (braking by generating a traveling magnetic field in a direction opposite to the traveling direction of the carrier truck).
Then, when the vehicle advances to a predetermined stop position at a sufficiently decelerated speed (that is, creep speed), a sensor (not shown) detects the position of the carrier vehicle, and the primary of the electromagnetic brake provided at the predetermined stop position. The side coil 16 is excited. As a result, the fixed iron core 15 is magnetized. Then, the magnetic force causes the fixed iron core 15 to overcome the restoring force of the return springs 12 and 12 to attract the armature 10. As a result, the fixed iron core 15 and the armature 10 come into contact with each other. Due to the suction force and the frictional force, the carriage is stopped and fixed.

[Problems to be Solved by the Invention] By the way, in the above-described conventional carrier stop device, when the LIM control device fails or a power failure occurs, the carrier trolley slows down. Instead, he overruns the predetermined stop position. This is because the electromagnetic brake is not capable of stopping speeds (medium and high speeds) other than the creep speed.
In addition, when the overrun transport carriage is stopped by providing a mechanical stopper on the ground side or the transport carriage side, the impact is strong and the transport carriage and the transported luggage may be damaged. It was Further, in the case of this overrun, it is impossible to continue the normal operation of the system after that because the transport carriage cannot be stopped at the predetermined stop position.

This invention was made in view of the above-mentioned circumstances.
Even if the carrier truck rushes into the station at a speed other than the creep speed in the event of a controller failure or power failure,
It is possible to stop the transport vehicle to a predetermined stop position, so that when the failure is restored, normal operation of the system can be immediately resumed, and the transport vehicle and the transported luggage are not damaged, and smoothly. An object of the present invention is to provide a stop device for a transport vehicle that can stop the transport vehicle.

[Means for Solving the Problems] The present invention relates to a catch rod attached to a carrier truck,
A frame-shaped body composed of two long plate-shaped side plates and two short plate-shaped end plates, and a frame-shaped body which is slidably mounted in the frame-shaped body in the traveling direction of the carriage 2. Individual plate-shaped slide plates, two cam plates rotatably mounted on each of the slide plates, and four first springs that bias each of the cam plates toward the inner surface of the side plate. , Two second springs for urging each of the slide plates toward the center side, and an up-and-down mechanism section attached to the ground side for vertically moving the frame-shaped body, and the up-and-down mechanism section is provided for When the frame-shaped body moves upward, the lower outer peripheral surface of the catch rod and the outer peripheral surface of the cam plate are positioned at a height where they mesh with each other.

[Operation] According to the above configuration, when the frame-shaped body is moved upward by the up-and-down mechanism, the catch rod of the traveling carriage travels against the two cam plates attached to the top of the frame-shaped body. As a result, the two cam plates move in the traveling direction while applying contact pressure to the inner surface of the frame-shaped body. As a result,
The carriage is stopped by the frictional force between the cam plate and the inner surface. Then, the carrier truck is biased by the second spring and returns to the center of the frame-shaped body and stops. Further, when the frame-like body is moved downward by the up-and-down mechanism, the catch rod and the cam plate do not engage with each other, so that the carriage is not braked.

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1, 2, and 3. FIG. 1 is a diagram showing the construction of a stop device for a carrier according to an embodiment of the present invention. In this figure, parts corresponding to the respective parts in FIG. 8 are assigned the same reference numerals and explanations thereof are omitted. FIG. 2 is a partially cutaway view of the stopping device of the transport vehicle as seen from above, where the left side of the alternate long and short dash line A is a top view of the frame L and the right side is a top view of the portion from which the frame L is removed. FIG. 3 is a side view of a stop device for a carrier vehicle.

In FIG. 1, 30 is a mounting plate which is mounted so as to overlap with the lower left side surface of the rail 1, and this mounting plate 30
A guide bracket 31 is attached to the upper part of the.
As shown in FIG. 2, the guide bracket 31 is a T-shaped member, and two opposing holes 31a, 31a are provided in a portion corresponding to a T-shaped vertical bar. Further, as shown in FIG. 3, two guide brackets 31 are attached to the left and right of the mounting plate 30 so as to face each other. The solenoid 32 is attached to the attachment plate 30 between the left and right guide brackets 31, 31. When the solenoid 32 is excited, the plunger 32a is pulled downward, and when the excitation is cut off, it is returned upward by the force of a spring (not shown). Further, each of the two holes 31a provided in the left and right guide brackets 31, 31 has a guide rod 33, ...
.. is inserted so that it can slide up and down. Further, plate-like support plates 34, 34 are attached to the upper ends of the guide bars 33 ,. Further, compression springs 34b and 34b are attached between the left support plate 34 and the guide bracket 31 and between the right support plate 34 and the guide bracket 31, respectively, whereby the left and right support plates 34 and 34 are provided. Is biased upwards.

Further, long plate-shaped side plates 35, 35 are attached to the upper surfaces of the left and right support plates 34, 34 so as to face each other, and short plate-shaped end plates 36, 35 are provided at both ends of the side plates 35, 35. 36 are mounted face-to-face. The side plates 35, 35 and the end plates 36, 36 form an elongated frame L. Also, the end plates 36,36
Holes 36a, 36a (see FIG. 1) are provided in the center upper part of each other so as to face each other, and slide rods 37 made of round bars are fitted into the holes 36a, 36a at both ends. This slide stick
37 is fixed by spring pins 38, 38 so as not to rotate and slide. Also, as shown in FIG.
The plunger 32a of the solenoid 32 described above is fitted in the central portion of the slide rod 37, whereby the plunger 32a and the frame L are interlocked. Further, plate-shaped slide plates 40, 41 slidably contacting the side plates 35, 35 are slidably attached to the slide rod 37. At the center of the side plates 35, 35 between the two slide plates 40, 41, stopper rubbers 49, 49 made of an elastic material are attached so as to face each other. A compression spring 50 is attached between the left end plate 36 and the slide plate 40, and between the right end plate 36 and the slide plate 41, whereby the slide plates 40 and 41 are provided with stopper rubbers 49 and 41, respectively. It is urged in the central part with 49. Further, U-shaped stopper brackets 51 are attached between the left end plate 36 and the slide plate 40 and between the right end plate 36 and the slide plate 41, respectively. Cushion rubber 5 made of elastic material is attached to the left and right stopper brackets 51, 51.
2, 52 are attached to the slide plates 40, 41 by screws. As a result, the sliding range of the slide plate 40 becomes the section "Y" (95 mm).

Further, as shown in FIG. 2, shafts 42, 42 are vertically provided so as to face each other on the upper portion of the slide plate 40. Semi-circular cam plates 43, 43 are rotatably attached to the upper ends of the shafts 42, 42. Further, the shafts 42, 42 are respectively provided with torsion coil springs 44, 44, whereby the cam plates 43, 43 open in a V shape toward the left end plate 36 side, and the cam plates 43, A part of 43 is adapted to contact the inner surfaces of the side plates 35, 35.
Similarly, the cam plates 43, 43 attached to the upper part of the slide plate 41 also open in a V shape toward the right end plate 36 side, and a part of the cam plates 43, 43 are side plates 35, 35. It comes in contact with the inner surface.

Further, a catch bar 60 made of a round bar is attached to the upper left side of the frame 4 in FIG.
The outer peripheral surface of the lower portion of the catch rod 60 and the outer peripheral surfaces of the cam plates 43, 43 attached to the upper portion of the frame-shaped body L when biased upward have a height at which they mesh with each other.

In such a configuration, it is assumed that the carrier truck is traveling on the rail 1. When stopping the truck at the target station, the solenoid 32 is first deenergized. As a result, the frame L rises due to the urging force of the springs 34b, 34b, and the height at which the cam plates 43, 43 attached to the upper part of the frame L and the catch rod 60 attached to the truck mesh with each other. It will be Next, the truck that has traveled spreads the two cam plates 43, 43 mounted on the slide plate 41 on the front side by the catch rod 60, and mounts it on the slide plate 40 on the back side. It hits the individual cam plates 43, 43. The cam plates 43, 43 on the back side are pushed by the catch rod 60 and try to open.However, since the side plates 35, 35 on both sides are fixed, the cam plates 43, 43 do not open and contact pressure is applied to the inner surface of the side plates 35, 35. While moving along with the slide plate 40, it moves in the traveling direction. At this time, the side plates 35, 35 and the cam plate 43,
Due to the frictional force generated between the vehicle and the vehicle 43, a braking force acts on the dolly and the dolly stops.

After the bogie stops, only the contact pressure by the torsion coil springs 44, 44 is exerted, so the restoring force of the compression spring 50 overcomes, the catch rod 60 of the bogie returns to the center, and the bogie stops.

On the other hand, if the solenoid 32 is excited, the plunger 32
Since a moves downward and the frame-shaped body L also moves downward, the catch rod 60 and the cam plates 43, 43 do not engage with each other, and the carrier truck can run.

As described above, in the above-described embodiment, since the carriage is stopped by turning off the excitation of the solenoid 32, there is an advantage that the stop mechanism automatically operates especially at the time of power failure.

FIG. 5, FIG. 6 and FIG. 7 show a second embodiment of the present invention, and in this embodiment, the longitudinal direction of the frame L of the above-mentioned embodiment is shortened. . In these figures, 71 and 71 are support plates 34 and 34 and end plates.
In order to serve also as 36, 36, the thickness of the end plates 36, 36 is increased, and two vertically extending holes 71a, 71a are provided therein, and the guide rods 33, ... Are inserted into these holes. It is something that is done.

In this way, the longitudinal direction of the frame-like body L is shortened, and instead of the end plates 36, 36, the support plates 34, 34 and the end plates are
By installing the end plates 71, 71 that also serve as 36, 36, the sliding range of the slide plates 73, 73
It can be shortened like the "Z" section (30 mm).

[Effects of the Invention] As described above, according to the present invention, the following effects can be achieved.

Since the traveling energy of the carrier truck is consumed by the contact pressure of the cam plate against the side plate and the frictional force generated by the movement, it can be used not only as a normal stop brake, but also when the carriage is entering at high speed, it can be stopped. It can also be used as an emergency stop brake in an emergency due to an abnormality in the control device.

Since the system can be simplified by combining the above,
Cost savings are possible.

After stopping the bogie, the bogie is returned to the center by the force of the second spring. Therefore, by arranging the primary side of the LIM at that position, it is easy to restart the system.

[Brief description of drawings]

FIG. 1 is a diagram showing a structure and a mounting position of a stop device for a carrier vehicle according to an embodiment of the present invention, FIG. 2 is a partially cutaway view of the stop device for the carrier vehicle, and FIG. 3 is a carrier vehicle. FIG. 4 is a side view of the stopping device of FIG. 4, FIG. 4 is a view showing the mounting position of the solenoid, FIG. 5 is a top view of the stopping device of the carrier according to the second embodiment of the present invention, and FIG. 5 is a sectional view taken along the line AA in FIG. 5, and FIG. 7 is a sectional view taken along the line B- in FIG.
FIG. 8 is a cross-sectional view taken along line B, FIG. 8 is a cross-sectional view showing a configuration example of a conventional carrier truck, and FIG. 9 is a cross-sectional view of the side surface of the electromagnetic brake. 35 …… side plate, 36 …… end plate, 40,41
...... Slide plate, 43 ...... Cam plate, 44 ...... First spring, 50 ...... Second spring, 60 ...... Catch rod, L ...
... framed body.

Claims (1)

[Scope of utility model registration request] 1. A catch bar attached to a carrier,
A frame-shaped body composed of two long plate-shaped side plates and two short plate-shaped end plates, and a frame-shaped body which is slidably mounted in the frame-shaped body in the traveling direction of the carriage 2. Individual plate-shaped slide plates, two cam plates rotatably mounted on each of the slide plates, and four first springs that bias each of the cam plates toward the inner surface of the side plate. , Two second springs for urging each of the slide plates toward the center side, and an up-and-down mechanism section attached to the ground side for vertically moving the frame-shaped body, and the up-and-down mechanism section is provided for When the frame-shaped body moves upward, it is located at a height where the lower outer peripheral surface of the catch bar and the outer peripheral surface of the cam plate are engaged with each other.