JPS6014753B2 - Elevator stop device - Google Patents

Description

[Detailed description of the invention] This invention relates to an elevator stopping device.

Conventionally, various measures have been taken to prevent falls due to their own weight in the event of an accident occurring while using a lifting rock, but all of them are unstable in operation or have unnecessarily complicated structures that are expensive. However, I could not say that it was satisfactory. The present invention provides an elevator stop device that has a simple structure and operates reliably.

In other words, in an elevator that has two racks on the left and right poles, and a driving pin wheel that engages with the racks attached to the porcelain side of the elevator, which is rotated by a motor and moves up and down along the poles, there is no possibility of an accident. When the pinion wheel that engages the ball rack rotates at a predetermined speed or higher when the ball is about to fall, the electromagnet is cut off and the lock pin at the end of the transmission shaft that is moved in conjunction with the electromagnet is turned off. As a result, the clutch teeth attached to the side surface of the pinion wheel are engaged, and the pinion wheel is stopped while being engaged with the rack of the pole, thereby reliably stopping the elevator. To explain the illustrated embodiment, FIG. 1 shows an explanatory diagram of an elevator equipped with a stopping device of the present invention, and 1 is a carrier of the elevator, which is box-shaped, and is located under the ceiling or floor 1'. It houses the necessary drive-related equipment as explained below.

2 is a drive motor, which transmits rotation to a reducer 4 via a V-belt 3, and from the reducer to a drive pin wheel 6 via a drive shaft 5.
Rotate.

Square poles 11 and 11' made of square pipes or the like are installed on both sides of the elevator, and a rack 12 is provided on the poles, and the drive pin wheel 6 is engaged with the rack 12. Pin wheel 6 driven by motor 2
By rotating the elevator, the elevator moves up and down along the poles 11, 11'. Reference numeral 7 indicates supporting pin wheels provided above and below the driving pin wheel, and reference numeral 8 indicates a pinion wheel forming a part of the stopping device of the present invention, which will be explained below.

In order to prevent the pole 11 from being pushed and moved to the opposite side of the drive pin wheel, the pole is pushed by a plurality of back rollers 9. Further, 10 is a wheel box containing each of the above-mentioned wheel parts. FIG. 2 is a plan view of FIG. 1 seen from above, and FIG. 3 is an explanatory view seen from the direction of arrow R in FIG. An electromagnet 20 is mounted inside, thereby driving a transmission shaft 24 via a link 21 consisting of an actuating village 22 and an intermediate lever 23.

This transmission shaft is biased to the left by a spring 25, but is normally pulled to the left in the drawing of the operating force 22 by the electromagnet 20'. It is pushed to the right in the figure against the Transmission shaft 24
passes through the aforementioned pinion wheel 8 in a state in which relative movement is possible and comes out on the opposite side, and is at the tip of its shaft. A pin holder 26 is attached. Left and right lock pins 27, 27 are attached to this holder facing the pinion wheel, and pass through a pin support portion 28. Further, a clutch tooth portion 29 is attached to the lock pin side of the pinion wheel 8. As mentioned above, the transmission shaft 2 is normally
4 is pushed to the right against the spring 25 by the action of the electromagnet 20, the lock pin holder 26 at the tip of the shaft 24 is also moved to the right, and the lock pin 27 attached to it is also moved to the right.
The pinioso wheel 8 is also disengaged from the clutch tooth portion 29, and the pinioso wheel 8 can freely rotate according to the vertical movement of the elevator. In the unlikely event that there is an accident and the elevator is about to fall, the number of revolutions of the pinion wheel will be a certain number (for example, 2 per minute).
2 rotations), a detection device (not shown as it is a well-known means) is activated to turn off the power.
If this happens, the motor 2 will also stop, and the elevator will try to fall under its own weight, but if the power is turned off, the electromagnet 20 will also turn off, so until now it has been pushed to the right in the figure by the action of the electromagnet against the spring 25. At the same time as the electromagnet is released, the transmission shaft 24, which had been
It is moved to the left by the action of 5. Therefore, the lock pin holder 26 attached to the shaft 24 also moves to the left,
The lock pin 27 attached thereto also moves to the left and engages with the clutch teeth 29 to prevent rotation of the pinion wheel 8. Therefore, the pinion wheel 8 is stopped (while still meshing with the rack 12 of the pole 11) and fixed at that position. Since this pinion wheel 8 is attached to the floor 1' of the elevator, the lowering of the elevator is completely prevented and the elevator is stopped. The above description has been made of the case where this stopping device is attached to an elevator, but it can also be used for any traveling device other than an elevator that uses a rack. The configuration of the stopping device of the present invention is as described above, and it has a simple configuration that can reliably stop the elevator in the event of an accident, and can greatly improve the ability to carry elevators and other traveling equipment using racks. It could be made safe.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of an elevator including a stop device of the present invention, FIG. 2 is a plan view of FIG. 1 as seen from above, and FIG. 3 is an explanatory diagram as seen from the direction of arrow R in FIG. 1. (Explanation of symbols), 1...Carrier, 2...Drive motor
ter, 3... V-belt, 4... reduction gear, 5
... Drive shaft, 6... Drive pin wheel, 7...
...Pin wheel, 8...Pinion wheel "9
...Back low-fu, 10...Wheel box, 11
...Square pole, 12...Rack, 20...
...Electromagnet, 21...Linked 22...Operation village, 23
...Intermediate lever, 24...Transmission shaft, 25...
... Spring, 26 ... Lock pin holder, 2
7...Lock pin, 28...Pin support part, 29...
...Clutch teeth. Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] 1 Square poles 11 and 11' are set up on the left and right sides of the carrier 1 of the elevator, and a rack 12 is installed on the poles, and the rack and
Drive pin wheel 6 attached to the side of the carrier 1 mentioned above
In an elevator that can be moved up and down along the pole by engaging with the above-mentioned racks 12 and rotating a driving pin wheel, a pinion wheel 8 that engages with the above-mentioned rack 12 is attached to the side of the above-mentioned carrier, and the pinion wheel 8 is engaged with the above-mentioned rack 12. The transmission shaft 24 is passed through the transmission shaft, and a lock pin holder 26 with a lock pin 27 is attached to one end of the transmission shaft. The other end of the transmission shaft communicates with an operating rod 22 driven by an electromagnet 20 via an intermediate lever 23, and the lock pin side of the pinion wheel 8 has teeth that mesh with the lock pin 27. When the rotation speed of the pinion wheel exceeds a certain rotation speed, the power to the electromagnet is turned off, and the transmission shaft is biased by a spring in a direction to bring the lock pin closer to the pinion wheel. An elevator stopping device characterized in that the lock pin is normally pushed by the electromagnet in a direction away from the pinion wheel against the spring.