Scissors lift with height sensor system
First Claim
1. A scissors lift with a height sensor system, comprising:
- a base;
a platform movable between a first height and a second height;
a scissors assembly that includes at least one pivotally connected scissor leg and operatively connects the base with the platform, wherein the scissors assembly is configured to lower and raise the platform relative to the base;
a lift actuator configured to pivot the scissor leg about a pivot pin to selectively raise and lower the platform;
an angle sensor fixed relative to the base and spaced from the pivot pin, wherein the angle sensor is configured to sense an angular position of the pivot pin; and
a processor configured to calculate a height of the platform from the angular position sensed by the angle sensor.
1 Assignment
0 Petitions
Accused Products
Abstract
A scissor lift with a height sensor system includes a scissors assembly including at least one scissor leg configured to lower and raise a platform, an angle sensor configured to sense the angular position of a pivot pin about which the scissor leg pivots, and a processor configured to calculate a height of the platform from the angular position sensed by the angle sensor. The processor may also be configured to control the lift actuator in response to the height of the platform calculated from the angular position sensed by the angular sensor. The angle sensor may be a magnetic angle sensor configured to sense the angle of a magnetic angular marker attached to the pivot pin.
18 Citations
20 Claims
-
1. A scissors lift with a height sensor system, comprising:
-
a base; a platform movable between a first height and a second height; a scissors assembly that includes at least one pivotally connected scissor leg and operatively connects the base with the platform, wherein the scissors assembly is configured to lower and raise the platform relative to the base; a lift actuator configured to pivot the scissor leg about a pivot pin to selectively raise and lower the platform; an angle sensor fixed relative to the base and spaced from the pivot pin, wherein the angle sensor is configured to sense an angular position of the pivot pin; and a processor configured to calculate a height of the platform from the angular position sensed by the angle sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
-
-
17. A scissors lift with a height sensor system, comprising:
-
a base; a platform movable between a first height and a second height; a scissors assembly that includes at least one pivotally connected scissor leg and operatively connects the base with the platform, wherein the scissors assembly is configured to lower and raise the platform relative to the base; a lift actuator configured to pivot the scissor leg about a pivot pin to selectively raise and lower the platform, wherein the pivot pin is secured to the scissor leg to rotate with the scissor leg; an angle sensor configured to sense an angular position of the pivot pin, the angle sensor is held in a fixed position adjacent the pivot pin, wherein the pivot pin comprises a pin flange, a bearing shaft extending from the pin flange, and an angle position marker disposed at a distal end of the bearing shaft, wherein the pin flange is secured to the scissor leg, the bearing shaft rotates with and supports the scissor leg, and the angle position marker rotates with the bearing shaft and is readable by the angle sensor; and a processor configured to calculate a height of the platform from the angular position sensed by the angle sensor. - View Dependent Claims (18, 19, 20)
-
Specification