Elevator speed regulation mechanism
A technology of speed regulating mechanism and elevator, applied in elevators, transportation and packaging, etc., can solve the problems of different action resistance, difficult adjustment, loss of balance, etc., to achieve high reliability, improve reliability, and maintain continuity.
Inactive Publication Date: 2007-12-05
TOSHIBA ELEVATOR KK
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Problems solved by technology
However, once the overspeed switch 11 works, because the action resistance of the overspeed switch 11 is suddenly eliminated, the balance will be lost, and elastic vibration centered on the balance position of the counterweight 9 will be generated.
If the maximum vibration exceeds the action position of the cable clamp under static equilibrium conditions, it is possible to misoperate at a speed lower than the specified speed
[0011] Moreover, the action resistance is often different due to the different products of the overspeed switch 11, and the action resistance is often greater than the difference in the operating force of the switch, so it is necessary to select the switch.
[0012] Once the continuity of the operating force change is lost, the adjustment is difficult if there is not sufficient speed difference from the overspeed switch 11 working to the cable clamp 6 working
Method used
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Embodiment Construction
[0048] Embodiments of the present invention will be described below with reference to the drawings.
[0049] 1 to 5 show an embodiment of the elevator speed regulating mechanism of the present invention.
[0050] As shown in Figures 1 to 5, the speed regulating mechanism 5 of the elevator is the same as the existing one, and has (refer to Figure 1 and Figure 12): pulley 8, rotating counterweight 9, upper speed regulating machine connecting rod 10a, speed adjusting spring 12. The lower connecting rod 10b of the governor, the pulley 8 is rolled up with the governor steel cable 7; the rotating counterweight 9 is linked with the pulley 8 to generate centrifugal force; the upper connecting rod 10a of the governor is connected with the rotating counterweight 9, It moves with the change of centrifugal force; the speed adjustment spring 12 controls the movement of the upper speed governor connecting rod 10a; the lower speed governor connecting rod 10b moves up and down with the action...
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Provided is a speed control mechanism for an elevator with high reliability, capable of easily carrying out adjustment without bulkiness in shape. The speed control mechanism 5 for the elevator is provided with a lower adjuster link 10b operated accompanying with rotation of a sheave 8 wound with an adjuster rope of the elevator; and a cam 19 interlocked and turned with the lower adjuster link 10b. An arm 21 having a cam roller 20 engaged with the cam 19 is turnably provided on a rotation shaft 17. The cam 19 is turned by action of the lower adjuster link 10b and the arm 21 having the cam roller 20 is turned to operate an overspeed switch 11.
Description
technical field [0001] The invention relates to a speed regulating mechanism for detecting the overspeed of the traveling speed of the car or the counterweight of the elevator, and operating the overspeed switch and the cable clamp of the elevator. Background technique [0002] In Article 10 No. 2 of Article 129 of the Building Standards Law Enforcement Order for Determining the Safety Devices of Lifts and the Notice No. 1432 No. 2 No. 2 of the Ministry of Construction of Japan in 2000 (AD 2000), the following provisions are made, that is, If the speed of the descending car exceeds the specified value, a device that automatically stops the car from descending must be installed. [0003] Fig. 11 is a diagram showing a schematic mechanism of a general elevator equipped with an emergency stop device. The car 1 of the elevator is hoisted by two main cables 2, and is lifted and lowered in the hoistway by a winch not shown in the figure. The guide rail 3 on this lifting road guid...
Claims
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IPC IPC(8): B66B5/04
Inventor 高井和彦小林英彦本告英俊
Owner TOSHIBA ELEVATOR KK