CN1014814B - Oscillating piston type engine - Google Patents

Abstract

The present invention relates to an oscillating-piston engine which is provided with a cylinder body, a central cylinder, a partition board, a piston, a main shaft, a crank, an operating fluid inlet, an operating fluid outlet, a guide core, etc. The present invention can be designed into an engine with high output driving torque to be used as dynamic force in industry and can also be matched with a screw pair, and a lead screw is served as an output device. The oscillating-piston engine with the lead screw as the output device can be widely used as a stroke regulating actuator, such as a valve actuator. The present invention can be a profound transformation in the field of pneumatic (or hydraulic) operated valves.

Description

Oscillating piston type engine

The present invention relates to the oscillating piston engine that a kind of liquid or elastic fluid drive, belong to the variable capacity motor.

(river Tian Yulang etc. writes the flow measurement handbook, the nineteen eighty-two publication of metering publishing house) the 153rd page of structural principle of having introduced a kind of rotary-piston type volume-displacement, put down in writing in the literary composition: " the rotary-piston type volume-displacement also is called annular piston formula and pendulum piston type flowmeter; annular piston is inserted in the housing of two layers of cylindrical cylinder; formation flows the form that annular piston rotates with liquid in housing ".When entering housing from inflow entrance, fluid promotes the annular piston rotation, and along with the rotation of annular piston when outflow opening flows out, the main shaft that is located at the housing center and connects with the eccentricity of central axis of annular piston is also by the annular piston rotary driving, therefore, " the volume of the fluid that the number of revolution of knowing piston middle spindle flows through with regard to energy measurement.”

Purpose of the present invention is intended to the structural principle according to the rotary-piston type volume-displacement, designs a kind of oscillating piston engine of novel structure.

This oscillating piston engine is by cylinder block, centered cylinder, dividing plate, piston, main shaft, lead core and the working fluid import that is positioned at the dividing plate both sides, the working fluid export mixes, centered cylinder is stretched out from the end face cantilever of cylinder block, and it is continuous with the casing wall of cylinder block by dividing plate, piston has inner chamber, reinforced wall and lead mouth, an end opening of inner chamber wherein, the other end is reinforced the wall sealing, leading mouth is located on the piston wall, and it is isometric wide with dividing plate, piston forms movingly with dividing plate by leading mouth, main shaft is installed in the endoporus of centered cylinder, and with the connection of the eccentricity of central axis in the center hole that is installed in the piston reinforced wall, its throw of eccentric equals poor with piston radius of the difference of the concentricity cylindrical radius of piston cavity radius and cylinder chamber radius respectively, lead core and be located at the dividing plate end face with between the cylinder block, one end of leading core is hinged with the reinforced wall of piston, along with the rotation of piston, leads core and does reciprocating linear motion along the dividing plate end face.

This oscillating piston engine is by cylinder block, centered cylinder, dividing plate, piston, main shaft, lead core and the working fluid import that is positioned at the dividing plate both sides, the working fluid export mixes, centered cylinder is stretched out from the end face suspended wall of cylinder block, and it is continuous with the casing wall of cylinder block by dividing plate, piston has inner chamber, reinforced wall and lead mouth, an end opening of inner chamber wherein, the other end is reinforced the wall sealing, leading mouth is located on the piston wall, and it is isometric wide with dividing plate, piston forms movingly with dividing plate by leading mouth, main shaft is a hollow shaft, be installed in the endoporus of centered cylinder, and the central shaft that is installed in the center hole of piston reinforced wall together connects by the eccentric opening on the central shaft, the throw of eccentric of this eccentric opening equals poor with piston radius of the difference of the concentricity cylindrical radius of piston cavity radius and cylinder chamber radius respectively, be provided with internal thread in the main shaft and reach the leading screw that constitutes screw pair with this internal thread, lead core and be located at the dividing plate end face with between the cylinder block, one end of leading core is hinged with the reinforced wall of piston, along with the rotation of piston, lead core and do reciprocating linear motion along the dividing plate end face.

This specification provides following accompanying drawing:

Fig. 1. structural representation of the present invention;

Fig. 2. the oscillating piston engine structural drawing of the main shaft output of analysing and observe along A-A;

Fig. 3. the oscillating piston engine structural drawing of the leading screw output of analysing and observe along A-A.

Fig. 2 is first kind of structural type of the present invention.Cylinder block (1) is provided with centered cylinder (2) and dividing plate (3), centered cylinder (2) is stretched out from the end face suspended wall of cylinder block (1), and it is continuous by the casing wall of the same cylinder block of dividing plate (3) (1), make cylinder chamber that cylinder block forms annular but that cut off by dividing plate (3), working fluid import (7) is set in the both sides of dividing plate (3) and working fluid exports (8).Piston (4) has inner chamber (9), reinforced wall (10) and lead mouthful (11), an end opening of inner chamber (9) wherein, the other end is reinforced wall (10) sealing, leading mouthful (11) is located on the piston wall, and same dividing plate (3) is isometric wide, piston (4) is from axial threading cylinder chamber, make and lead mouthful (11) reeve dividing plate (3), and form movingly, the reinforced wall of piston (10) is provided with center hole, suit central shaft (6) in the hole, this central shaft (6) connects with the main shaft (5) in the endoporus that is installed in centered cylinder (2) is eccentric, its throw of eccentric equals poor with piston radius of the difference of the concentricity cylindrical radius of piston cavity radius and cylinder chamber radius respectively, and off-centre is connected with two kinds of schemes: the one, and main shaft (5) connects by the concentricity axle of crank (6); The 2nd, the eccentric opening on main shaft (5) is concentricity spool (6) connects.Lead core (12) and be located between the same cylinder block of dividing plate (3) end face (1), the reinforced wall (10) of the same piston of an end (4) of leading core (12) is hinged, along with the rotation of piston (4), leads core (12) and does reciprocating linear motion along the end face of dividing plate (3).

Fig. 3 is second kind of structural type of the present invention.Its major character is to become main shaft to be output as leading screw output, the main shaft of this pattern (5) is a hollow shaft, be provided with internal thread in the axle and reach the leading screw (14) that constitutes screw pair with this internal thread, described internal thread can be realized by nut (13) is installed in axle, the piston middle spindle of this pattern (6) is for having the disk of eccentric opening, its cylindrical with piston center hole movingly, the same main shaft of its eccentric opening (5) is fastenedly connected, and other member is (as cylinder block (1), centered cylinder (2), dividing plate (3), piston (4), lead core (12) and working fluid import (7), working fluid outlet (8)) design is with first kind of structural type.

That aforesaid oscillating piston engine has an annular but the cylinder chamber that cut off by dividing plate, piston cavity is the direct action space of working fluid, to be piston middle spindle lead mouthful synthetic along the linear reciprocating motion of dividing plate around rotatablely moving of main shaft with piston in piston motion, and in the piston, outer surface is made rolling motion along the surface in centered cylinder and cylinder chamber respectively, therefore, this oscillating piston engine novel structure, and can be designed to main shaft output and two kinds of structural types of leading screw output, but cylinder block and piston be symmetric design also, the piston that promptly is designed to have the cylinder block of two dividing plates and two centered cylinder and has two inner chambers.The flexible stroke of oscillating piston engine, leading screw with leading screw output is controlled, and energy self-locking after the action, can be used as valve and is used widely with final controlling element.

Claims (2)

1, a kind of oscillating piston engine, it is characterized in that: by cylinder block, centered cylinder, dividing plate, piston, main shaft, lead core and the working fluid import that is positioned at the dividing plate both sides, the working fluid export mixes, centered cylinder is stretched out from the end face cantilever of cylinder block, and it is continuous with the casing wall of cylinder block by dividing plate, piston has inner chamber, reinforced wall and lead mouth, an end opening of inner chamber wherein, the other end is reinforced the wall sealing, leading mouth is located on the piston wall, and it is isometric wide with dividing plate, piston forms movingly with dividing plate by leading mouth, main shaft is installed in the endoporus of centered cylinder, and with the connection of the eccentricity of central axis in the center hole that is installed in the piston reinforced wall, its throw of eccentric equals poor with piston radius of the difference of the concentricity cylindrical radius of piston cavity radius and cylinder chamber radius respectively, leads core and is located at the dividing plate end face with between the cylinder block, and an end of leading core is hinged with the reinforced wall of piston, along with the rotation of piston, lead core and do reciprocating linear motion along the dividing plate end face.

2, a kind of oscillating piston engine, it is characterized in that: by cylinder block, centered cylinder, dividing plate, piston, main shaft, lead core and the working fluid import that is positioned at the dividing plate both sides, the working fluid export mixes, centered cylinder is stretched out from the end face cantilever of cylinder block, and it is continuous with the casing wall of cylinder block by dividing plate, piston has inner chamber, reinforced wall and lead mouth, an end opening of inner chamber wherein, the other end is reinforced the wall sealing, leading mouth is located on the piston wall, and it is isometric wide with dividing plate, piston forms movingly with dividing plate by leading mouth, main shaft is a hollow shaft, be installed in the endoporus of centered cylinder, and connect by the eccentric opening on the central shaft with the central shaft that is installed in the center hole of piston reinforced wall, the throw of eccentric of this eccentric opening equals poor with piston radius of the difference of the concentricity cylindrical radius of piston cavity radius and cylinder chamber radius respectively, be provided with internal thread in the main shaft and reach the leading screw that constitutes screw pair with this internal thread, lead core and be located at the dividing plate end face with between the cylinder block, one end of leading core is hinged with the reinforced wall of piston, along with the rotation of piston, lead core and do reciprocating linear motion along the dividing plate end face.

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