Hydraulic plunger pump variable and cross power control mechanism
A technology of hydraulic plunger pump and cross power, applied in the field of plunger pump, can solve the problems of insensitive adjustment, stuck, complicated structure of control mechanism, etc., and achieve the effects of low processing difficulty, long life and guaranteeing control accuracy.
Pending Publication Date: 2018-07-27
JIANGSU HENGLI HYDRAULIC TECH CO LTD
View PDF5 Cites 5 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The existing control mechanism is complex in structure, prone to sticking and insensitive to adjustment
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
[0028] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the drawings are exemplary, and are only used to explain the present invention, but should not be understood as limiting the present invention.
[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial", The orientation or positional relationship indicated by "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenien...
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
The invention provides a hydraulic plunger pump variable and cross power control mechanism. The hydraulic plunger pump variable and cross power control mechanism is provided with an oil port Ps, a high-pressure port P and a oil return port T, and comprises a main valve body, a main valve element sleeve, a main valve element, a shifting fork and a power control pilot valve, wherein the main valve body is provided with a through hole which is through in the axial direction, and the side portion of the main valve body is provided with a mounting hole communicating with the through hole; the mainvalve element sleeve is shaped like a column coaxially arranged with the through hole and is movably arranged in the through hole in the axial direction of the through hole; the side portion of the main valve element sleeve is provided with a connecting hole corresponding to the mounting hole; the main valve element is movably arranged in the main valve element sleeve in the axial direction of thethrough hole; the shifting fork is movably arranged in the mounting hole, and one end of the shifting fork penetrates through the mounting hole to be connected with the connecting hole; the power control pilot valve is arranged in the through hole and located at one end of the main valve element sleeve, and one end of the power control pilot valve is connected with one end of the main valve element to transfer force to the main valve element. According to the control mechanism provided by the embodiment of the invention, the variable control precision of a hydraulic pump is high, the number of parts is less, and the machining difficulty is low.
Description
Technical field [0001] The present invention relates to the technical field of plunger pumps, and more specifically, to a hydraulic plunger pump displacement and cross power control mechanism. Background technique [0002] Displacement control and (cross) power control are a common combination control method for hydraulic pumps. The hydraulic pump can adjust the pump displacement through hydraulic pilot signals and limit the pump input power. The combined control method is mainly to control the change of the swash plate inclination angle by controlling the pressure entering the large servo piston chamber of the plunger pump to control the displacement of the hydraulic pump. The movement of the large servo piston feeds back the displacement change to the control valve through a feedback mechanism. , So as to close the oil circuit of the control valve, reach a new equilibrium point, and complete the displacement control and power control. The existing control mechanism has a compl...
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): F04B49/22
CPCF04B49/22
Inventor 汪立平张振寿李童
Owner JIANGSU HENGLI HYDRAULIC TECH CO LTD