Crank circular sliding block mechanism, parts thereof, and equipment therefrom

Patent metadata

Field	Value
Publication number	US-10012224-B2
Application number	US-201013807399-A
Country	US
Kind code	B2
Filing date	Oct 11, 2010
Priority date	Jul 2, 2010
Publication date	Jul 3, 2018
Grant date	Jul 3, 2018

Abstract

A crank circular slider mechanism includes a crankshaft having at least one crank pin; at least one circular slider with an eccentric hole which fits over the crank pin; at least one reciprocating element with a circular slider-receiving hole, which receives the circular slider in a rotatable manner; and at least one dynamic balance rotary block with an eccentric hole that fits over the crank pin. The dynamic balance rotary block and the adjacent circular slider are fixed together. By means of proper selection of a mounting place and a mass of the dynamic balance rotary block, the mechanism can convert reciprocating inertia of the reciprocating element into rotation inertia so as to obtain a balancing effect. An internal combustion engine and a compressor may be equipped with the crank circular slider mechanism.

First claim

The invention claimed is:

1. A crank circular slider mechanism comprising:
a crankshaft including a crank pin;
a circular slider that fits over the crank pin through an eccentric hole;
a reciprocating element with a circular slider receiving hole, which receives the circular slider in a rotatable manner; and
a dynamic balance rotary block constituting a mass part that fits over the crank pin through an eccentric hole,
wherein the dynamic balance rotary block does not contact the reciprocating element,
wherein the dynamic balance rotary block and the circular slider are fixed to each other, such that the dynamic balance rotary block rotates together with the circular slider,
wherein a mass center of the dynamic balance rotary block is arranged such that projection points, projecting from an axial center of the circular slider, the mass center of the dynamic balance rotary block, and an axial center of the crank pin onto a plane perpendicular to an axial line of the crankshaft, respectively are designated by A, B, and C, the projection points forming an angle ACB that is in a range of 90-270 degrees,
wherein a segment length AC equals a segment length BC equals a length e,
wherein e is a radius of a crank of the crankshaft, and
wherein e is an eccentric distance of the circular slider.

2. A crank circular slider mechanism according to claim 1 , wherein the angle ACB equals 180 degrees.

3. A crank circular slider mechanism according to claim 1 ,
wherein the mechanism includes only one circular slider and only one dynamic balance rotary block, and
wherein a total mass of the dynamic balance rotary block equals a total mass of the reciprocating element corresponding to the circular slider.

4. A crank circular slider mechanism according to claim 1 ,
wherein the mechanism includes two circular sliders that respectively are located on sides of the dynamic balance rotary block and adjacent to the dynamic balance rotary block,
wherein, when axial centers of the two circular sliders are projected onto the plane perpendicular to the axial line of the crankshaft to form projections, the projections coincide, and
wherein a total mass of the dynamic balance rotary block equals a sum of total masses of two reciprocating elements corresponding to the two circular sliders.

5. A crank circular slider mechanism according to claim 1 ,
wherein the mechanism includes two dynamic balance rotary blocks respectively located on sides of the circular slider and adjacent to the circular slider,
wherein projections of axial centers of the two dynamic balance rotary blocks onto the plane perpendicular to the axial line of the crankshaft overlap, and
wherein the two dynamic balance rotary blocks have a same total mass respectively equal to half of a total mass of the reciprocating element corresponding to the circular slider.

6. A crank circular slider mechanism according to claim 1 , wherein the circular slider and the dynamic balance rotary block are fixed to each other by a positioning pin.

7. A crank circular slider mechanism according to claim 1 , further comprising a gear device structured to overcome a mathematical singularity.

8. A crank circular slider mechanism according to claim 1 , wherein the mechanism is incorporated in equipment.

9. An internal combustion engine comprising a crank circular slider mechanism, the mechanism including:
a crankshaft including a crank pin;
a circular slider that fits over the crank pin through an eccentric hole;
a reciprocating element with a circular slider receiving hole, which receives the circular slider in a rotatable manner; and
a dynamic balance rotary block constituting a mass part that fits over the crank pin through an eccentric hole,
wherein the dynamic balance rotary block does not contact the reciprocating element,
wherein the dynamic balance rotary block and the circular slider are fixed to each other, such that the dynamic balance rotary block rotates together with the circular slider,
wherein a mass center of the dynamic balance rotary block is arranged such that projection points, projecting from an axial center of the circular slider, the mass center of the dynamic balance rotary block, and an axial center of the crank pin onto a plane perpendicular to an axial line of the crankshaft, respectively are designated by A, B, and C, the projection points forming an angle ACB that is in a range of 90-270 degrees,
wherein a segment length AC equals a segment length BC equals a length e,
wherein e is a radius of a crank of the crankshaft, and
wherein e is an eccentric distance of the circular slider.

10. A compressor comprising a crank circular slider mechanism, the mechanism including:
a crankshaft including a crank pin;
a circular slider that fits over the crank pin through an eccentric hole;
a reciprocating element with a circular slider receiving hole, which receives the circular slider in a rotatable manner; and
a dynamic balance rotary block constituting a mass part that fits over the crank pin through an eccentric hole,
wherein the dynamic balance rotary block does not contact the reciprocating element,
wherein the dynamic balance rotary block and the circular slider are fixed to each other, such that the dynamic balance rotary block rotates together with the circular slider,
wherein a mass center of the dynamic balance rotary block is arranged such that projection points, projecting from an axial center of the circular slider, the mass center of the dynamic balance rotary block, and an axial center of the crank pin onto a plane perpendicular to an axial line of the crankshaft, respectively are designated by A, B, and C, the projection points forming an angle ACB that is in a range of 90-270 degrees,
wherein a segment length AC equals a segment length BC equals a length e,
wherein e is a radius of a crank of the crankshaft, and
wherein e is an eccentric distance of the circular slider.

11. An internal combustion engine according to claim 9 , wherein a total mass of the dynamic balance rotary block is equal to a total mass of the reciprocating element.

12. A compressor according to claim 10 , wherein a total mass of the dynamic balance rotary block is equal to a total mass of the reciprocating element.

Assignees

• Li Ming
• Li Zhengzhong
• Beijing Sinocep Engine Tech Co Ltd

Inventors

• Li Ming
• Li Zhengzhong

Classifications

• F04B27/053

  with an actuating element at the inner ends of the cylinders · CPC title

• F16H21/22

  with one connecting-rod and one guided slide to each crank or eccentric · CPC title

• F01B9/06

  the piston motion being transmitted by curved surfaces · CPC title

• F16F15/283

  for engine crankshafts · CPC title

• F04B9/045

  the means being eccentrics · CPC title