Method and apparatus for establishing a manual governor control setting in an electro-hydraulic system
A technology of control parts and controllers, applied in drilling equipment and methods, automatic control systems for drilling, drilling equipment, etc., can solve problems such as the inability to use the available input control backflush function, low backflush speed and backflush pressure, etc.
Inactive Publication Date: 2010-06-23
VERMEER MFG CO
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
In this case - since the input control is approximately proportional to the output control - the operator will have difficulty maintaining the position of the input control precisely at the desired low recoil speed and recoil pressure levels
[0010] Therefore, when drilling in non-uniform conditions, approximately 20-100% of the available input control throttling function becomes unusable
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0032] The discussion and illustrations presented herein are presented in an exemplary format in which selected embodiments of various aspects of the invention are described and illustrated to illustrate the various aspects of the invention. A system, device or method according to the invention may comprise one or more of the features, structures, methods or combinations thereof described herein. For example, an apparatus or system may be implemented to include one or more of the advantageous features and / or processes described below. An apparatus or system according to the present invention may be implemented to include various features and / or aspects illustrated and / or discussed in separate examples and / or descriptions. It is intended that such a device or system need not include all of the features described herein, but may be implemented to include selected features that provide useful structure, system, and / or functionality.
[0033] The present invention relates general...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
An horizontal directional drilling (HDD) system having dynamically scalable control settings is disclosed. Such a system can include a drill pipe configured to attach to a boring tool, a user control having an input device moveable in position along an input range, the user control configured to output a control signal proportional to the position of the input device along the input range, a pumphaving an output range, the pump configured to move the drill pipe at various output levels over the output range based on the control signal, and a controller coupled to the user control and the pump, the controller configured to execute program instructions stored in memory to cause the HDD system to: perform drilling operations in a first control setting in which the output range of the pump corresponds to the input range of the user control and changes in output of the pump are proportional to positional changes of the input device along the input range, and perform drilling operations ina second control setting in which the output range of the pump is limited by a output limit and changes in output of the pump are proportionally scaled to positional changes of the input device alongthe input range.
Description
technical field [0001] The present invention generally relates to underground drilling machines and methods for controlling underground drilling. More particularly, the present invention relates to subterranean drilling machines for use in horizontal directional drilling and improved methods thereof, and apparatus for establishing full range of motion of operator input controls to reduced output settings and manual regulator control settings. Background technique [0002] Utility lines for water, electricity, natural gas, telephone and cable television, for example, are often laid underground for safety and aesthetic reasons. Sometimes underground services are buried in trenches that are subsequently backfilled. However, digging trenches is time consuming and can cause significant damage to existing structures or roads. Accordingly, horizontal directional drilling ("HDD") is often used to avoid these drawbacks. [0003] A typical horizontal directional drilling machine in...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): E21B7/04E21B44/00
CPCE21B7/046E21B44/00
Inventor R·W·卡尔森P·R·莱恩
Owner VERMEER MFG CO