1. A slue position sensing system comprising:
a swing sensor housing accommodating a target gear, the target gear is coupled to a drive shaft that passes through a helical gear,
the swing sensor housing supporting at least one of a rotary position sensor or a speed sensor in close proximity to a target shaft that extends across the swing sensor housing, the target shaft passing through a driven gear that is enmeshed with the helical gear.
2. The system of claim 1 wherein the at least one of the rotary position sensor and the speed sensor is linked to a controller.
3. The system of claim 1 wherein the swing sensor housing is disposed between a swing motor and a swing drive.
4. The system of claim 1 wherein the swing sensor housing includes two openings including a coupling opening and a sensor opening, a coupling end of the target shaft being received in the coupling opening, a sensor end of the target shaft being received in the sensor opening, the rotary position sensor being coupled to the sensor opening.
5. The system of claim 4 wherein the coupling opening accommodates a first bearing through which the coupling end of the target shaft passes and the sensor opening accommodates a second bearing through which the sensor end of the target shaft passes.
6. The system of claim 1 wherein the swing sensor housing supports both a speed sensor and a rotary position sensor.
7. A method for retrofitting a swing drive assembly with a slue position sensing system, the method comprising:
providing a swing sensor housing;
installing a target gear in the swing sensor housing, the target gear being coupled to a drive shaft having a first end for coupling the target gear to a swing motor and a second end for coupling the target gear to a swing drive, the drive shaft passing through a helical gear;
installing a target shaft in the swing sensor housing, the target shaft passing through and being coupled to a driven gear, the driven and helical gears being enmeshed; and
installing a speed sensor or a rotary position sensor in close proximity to the target shaft.
8. The method of claim 7 wherein
the target shaft including a sensor end that is magnetized and the swing sensor housing includes a sensor opening, and the method further comprises
placing the speed sensor or rotary position sensor in the sensor opening in proximity to the sensor end of the target shaft.
9. The method of claim 7 further including:
coupling the speed sensor or rotary position sensor to a controller.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
What is claimed is:
1. A shock absorber for a oil well pumping unit that will attach to any and all oil well pumping units without any special base plates or any special equipment. It will attach to any wire line clamp by the bridle arms or will fit on any and all carrier bars. This shock absorber allows the spring sizes to be changed in the spring housing, as to a larger or smaller spring to conform to the weight loads of the rods and fluid in each individual well, this reduces maximum peak rod load in the well which increases longer life of the pump, rod string, and pumping unit. Inside the bottom housing is a round vertical spring aligner which has a central polish rod opening there. This keeps the polish rod in alignment and reduces wear, plus if the spring was to break, the spring will keep working, which will prevent down time until a repair can be made. This spring aligner is also a spring saver, it keeps the spring off of the polish rod and prevents wear to said spring and polish rod.