CN102080724B - Reciprocating piece for crank round slider mechanism, and internal combustion engine and compressor thereof - Google Patents
Reciprocating piece for crank round slider mechanism, and internal combustion engine and compressor thereof Download PDFInfo
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- CN102080724B CN102080724B CN 201010581946 CN201010581946A CN102080724B CN 102080724 B CN102080724 B CN 102080724B CN 201010581946 CN201010581946 CN 201010581946 CN 201010581946 A CN201010581946 A CN 201010581946A CN 102080724 B CN102080724 B CN 102080724B
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- guide portion
- reciprocating part
- circular slider
- piston
- crank mechanism
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- 238000002485 combustion reaction Methods 0.000 title claims description 14
- 230000004308 accommodation Effects 0.000 claims description 24
- 230000010354 integration Effects 0.000 claims description 3
- 238000005452 bending Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000002153 concerted effect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010721 machine oil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
The invention discloses a reciprocating piece for a crank round slider mechanism. The reciprocating piece comprises a crown part and a guide part, wherein a round slider accommodating hole is formed on the guide part; the guide part comprises a first column guide part and a second column guide part; the first column guide part and the second column guide part are divided by a longitudinal groove of which the center plane is vertical to the round slider accommodating hole; and the groove width of the longitudinal groove is enough to accommodate the thickness of the guide part of the reciprocating piece which is matched with a piston. The guide part of the reciprocating piece provided by the invention is divided into two columns by the longitudinal groove, a dynamic balance slider or the guide part of the piston which is matched with the reciprocating piece can pass through the longitudinal groove, and due to the groove depth and the layout position of the longitudinal groove, the reciprocating piece is provided with a stroke space for reciprocating motion. Due to the structure, the distance between the intersection points of the center axes of the reciprocating motion of two reciprocating pieces and the center axis of a crankshaft is obviously reduced, and the bending moment generated on the axis of the crankshaft by the distance is lowered.
Description
Technical field
The present invention relates to circular slider-crank mechanism, particularly relate to the reciprocating part that is used for circular slider-crank mechanism.The present invention relates to internal-combustion engine, the compressor that uses above-mentioned reciprocating part simultaneously.
Background technique
The motion of conventional engines is a connecting rod.Under this motion, the to-and-fro motion of piston need pass to bent axle through connected connecting rod, and in movement process, connecting rod makes piston receive the periodicity lateral force that changes with higher-order function along with swing is back and forth done in the motion of piston.
Because the existence of connecting rod; Shortcomings such as that the connecting rod internal-combustion engine exists is bulky, heavy, balance quality difference; In order to address these problems, Chinese patent document CN85100358B discloses a kind of " crankshaft circular slide block reciprocating piston internal combustion engine ", and the characteristics of this internal-combustion engine are to have cancelled connecting rod; The smooth block that employing has eccentric circular hole matches with the piston assembly of particular design, and the straight reciprocating motion that realizes piston is to the conversion that rotatablely moves.
, be respectively Chinese patent document CN85100358B specification Fig. 4, the disclosed piston stereogram of Fig. 5 please referring to Fig. 1, Fig. 2.As can be seen from the figure, the piston assembly of this kind internal-combustion engine has bizet 01,02 two parts of guide portion, and said bizet 01 is identical with the piston head effect of traditional combustion engine, and its top is a piston head, is the part of firing chamber; The bizet periphery then is provided with some piston ring grooves, is used to settle compression ring, oil ring, realizes the sealing of countercylinder.Among the figure, in the bizet bottom, said guide portion 02 is set, this guide portion 02 main body is for thin block, and two sides of this thin piece are slide rail, can cooperate with the slideway of body, and directed side is otherwise known as; Then have the circular hole that internal diameter and smooth block external diameter cooperate on the center line on its plane, this circular hole is called circular slider accommodation hole 03.According to condition of different, the width of guide portion 02 can equal the width of bizet 01, like Fig. 1; Also can be greater than the width of bizet 01, like Fig. 2.This guide portion 02 is called piston seat again.
Be the basis with above-mentioned patent documentation, Chinese patent document CN1067741C discloses a kind of " crank and double-round slide reciprocating piston internal combustion engine ".This internal-combustion engine adopts the mode of piston and dynamic balance slide block pairing, and both move on the to-and-fro motion track that is 90 degree layouts respectively, overcome point alive between piston and the dynamic balance slide block each other, can avoid adopting gear mechanism to overcome the influence of point to mechanism's life-span of living; Simultaneously, the motion of piston and dynamic balance slide block makes a concerted effort to form the centrifugal force that points to the crank pin center from crankshaft center, is convenient to carry out balance, makes this mechanism can reach desirable dynamic balancing effect.
But, in said mechanism, there is distance L along the crankshaft center line direction between said piston and the dynamic balance slide block, make both on bent axle, form moment of flexure, make the entire mechanism can't complete equilibrium.
Summary of the invention
The present invention provides a kind of reciprocating part that is used for circular slider-crank mechanism; This reciprocating part can be piston or dynamic balance slide block; Use this kind reciprocating part can make the spatial arrangement of whole circular slider-crank mechanism obtain to improve, for entire mechanism realizes that the effect of balance provides possibility completely.
The present invention provides a kind of reciprocating part that is used for circular slider-crank mechanism simultaneously, and this reciprocating part comprises bizet and guide portion; Said guide portion is provided with circular slider accommodation hole, and said guide portion comprises the first row guide portion and secondary series guide portion, and said first row guide portion and secondary series guide portion are cut apart perpendicular to the cannelure of said circular slider accommodation hole by a median plane; The groove width of this cannelure is enough to hold the thickness with the guide portion of the reciprocating part of this reciprocating part pairing; The thickness of said guide portion specifically is meant the size of guide portion along this dimension of circular slider accommodation hole axis.
Preferably, this reciprocating part is the dynamic balance slide block of single action piston or leaf-comb portion, and said cannelure opening is in the guide portion bottom surface.
Preferably, the said first row guide portion of being cut apart by said cannelure is identical with said secondary series guide portion thickness.
Preferably, said first row guide portion and the said secondary series guide portion cut apart by said cannelure have identical structure.
Preferably, said guide portion and said bizet are made into integration.
Preferably, the degree of depth of said cannelure adds the reciprocating stroke of this reciprocating part for the guide portion width of the pairing reciprocating part of this reciprocating part.
Preferably, the bottom of said first row guide portion or secondary series guide portion is provided with the mounting hole that is used to be installed into oil pipe or oil-feed pin, and this mounting hole is connected to the circular slider accommodation hole aperture surface through oil duct.
Preferably, said first row guide portion and/or secondary series guide portion comprise following three parts: be positioned at the slide rail of both sides, the smooth block accommodating body that said circular slider accommodation hole is set in the middle of being positioned at and be positioned in the middle of connection smooth block accommodating body and the joint of said bizet bottom surface; Wherein, there is lightening hole in the slide rail of said joint and both sides; Said joint is narrowed down to pipe portion bottom surface direction by the smooth block accommodating body, and its cross section is an I shape.
The present invention provides a kind of internal-combustion engine, uses any described reciprocating part that is used for circular slider-crank mechanism of technique scheme.
The present invention provides a kind of compressor, uses the described reciprocating part that is used for circular slider-crank mechanism of above-mentioned any technological scheme.
Reciprocating part provided by the invention; Its guide portion is divided into two row by cannelure; Cannelure can hold with the dynamic balance slide block of this reciprocating part pairing or the guide portion of piston and passes, and its groove depth and position self provide reciprocating stroke space for this reciprocating part.In the circular slider accommodation hole of two row, can settle smooth block, and fix the formation circular slider set with the smooth block that is positioned at another piston between the two.Distance obviously reduces between the reciprocating central axis that said structure makes two reciprocating parts (two piston, or a dynamic balance slide block and a piston) and the intersection point of crankshaft center axis, significantly reduces the moment of flexure that on crankshaft center line, produces owing to this distance.
In the preferred version of this reciprocating part; The first row guide portion of being cut apart by cannelure has identical thickness even identical structure with the secondary series guide portion; Such structure can make the reciprocating central axis of two reciprocating parts intersect at a point; The moment of flexure of existing technology lower edge crankshaft center line will not exist, and the moving equilibrium property of entire mechanism is significantly improved.
Description of drawings
Fig. 1 is the piston figure that Chinese patent document CN85100358B specification Fig. 4 provides;
Fig. 2 is the piston figure that Chinese patent document CN85100358B specification Fig. 5 provides;
Fig. 3 is the layout plan of the connecting rod that is used for of reciprocating part that the embodiment of the invention provides;
Fig. 4 is one of stereogram of the piston that provides of the embodiment of the invention;
Fig. 5 be the piston that provides of the embodiment of the invention stereogram two.
Embodiment
Please referring to Fig. 3, this figure is the layout plan of the connecting rod that is used for of reciprocating part that the embodiment of the invention provides.The reciprocating part that present embodiment provides specifically is a kind of piston, the movement parts layout when Fig. 3 illustrates this piston and is used for a kind of crank round slider three cylinder machines of T type structure.
As shown in Figure 3, mainly comprise single action piston 1, two-way ram 2 in this mechanism.Both are arranged on the orthogonal to-and-fro motion track.Wherein single action piston 1 is for Vertical direction moves up and down, and two-way ram 2 is with the substantially horizontal side-to-side movement.
Below said single action piston 1 is carried out detailed explanation.Please referring to Fig. 4, this illustrates the stereogram of a kind of reciprocating part that is used for circular slider-crank mechanism that the embodiment of the invention provides, and this reciprocating part specifically is a piston.Please be simultaneously referring to Fig. 5, this figure is the stereogram at another visual angle of piston shown in Figure 4.
Like Fig. 4-shown in Figure 5, single action piston 1 comprises bizet 1-1, piston seat 1-2; Said piston seat 1-2 is provided with circular slider accommodation hole 1-3.Said piston seat is also referred to as guide portion according to its function.
Different with the single action piston that existing technology provides, in the present embodiment, said piston seat 1-2 is cut apart perpendicular to the cannelure 1-4 that said circular slider accommodation hole 1-3, its opening are positioned at piston seat 1-2 bottom surface by a median plane; Make this piston seat 1-2 be divided into two row, be called the first row piston seat 1-2-1 and secondary series piston seat 1-2-2 respectively.On said first row piston seat 1-2-1 and the secondary series piston seat 1-2-2, circular slider accommodation hole 1-3 is arranged in identical position; In order to obtain best effect; Obviously, the median plane of this cannelure 1-4 should be exactly the median plane of piston seat 1-2 entity, and above-mentioned first row piston seat 1-2-1 and the secondary series piston seat 1-2-2 of being cut apart back formation by this cannelure 1-4 have identical structure; Particularly; Both have identical thickness, and identical position is provided with same circular slider accommodation hole, are respectively the first row piston seat circular slider accommodation hole 1-3-1 and secondary series piston seat circular slider accommodation hole 1-3-2.
Said cannelure 1-4 has enough groove widths, and this groove width is enough to hold the thickness with the piston seat of the two-way ram 2 of this piston pairing; Like this, two pistons can assemble with the mode of intersecting.The thickness of said piston seat specifically is meant the size of piston seat along this dimension of circular slider accommodation hole axis, and hereinafter is mentioned the width of piston seat, is meant the piston seat size of while perpendicular to the dimension of piston seat circular slider accommodation hole axis and piston axis.Under the situation of the compactness of pursuing complete machine, the piston seat thickness that the groove width of said cannelure 1-4 just has been enough to hold with the said two-way ram 2 of this single action piston 1 gets final product.
With reference to figure 3; Can find out; The to-and-fro motion of said single action piston 1 needs not interfere with two-way ram 2; The groove depth of then said cannelure 1-4 need still can not collided with the piston seat of said two-way ram 2 when this single action piston 1 reciprocates to down to some position; When the size of considering entire mechanism needs as far as possible for a short time, then this single action piston 1 moves to down solstice, needs its piston seat bottom surface just in time to be in sustained height with the directed side that the piston seat of said two-way ram 2 is positioned at the bottom.According to this requirement, the groove depth of then said single action piston 1 should be the piston seat width that its stroke adds the above two-way ram 2 at least.Certainly, single action piston 1 moves to down solstice, and the piston seat that its piston seat bottom surface also can be positioned at said two-way ram 2 is positioned at the below or the top of the directed side of bottom, and is corresponding, and groove depth can be darker or more shallow than above-mentioned requirements.As long as can guarantee the to-and-fro motion of two reciprocating parts does not interfere.For example, single action piston 1 moves to down solstice, and the lower end surface of its piston seat 1-2 does not reach the sideways position of piston seat lower guide of said two-way ram 2 as yet, and then its cannelure 1-4 just can be more shallow than above-mentioned requirements.In addition, only be in order to reduce the weight of single action piston 1, cannelure 1-4 also can be than satisfying darker that the above-mentioned requirement that does not move interference is provided with.For example, in the present embodiment, cannelure 1-4 reaches bizet 1-1 bottom surface always, and in fact, when single action piston 1 moved to down to some, the bottom land of its cannelure 1-4 and the top guide sides of two-way ram 2 remained in tangible distance.
The manufacture of above-mentioned single action piston 1 can in this instance, adopt overall structure by multiple, and promptly said piston seat 1-2 and said bizet 1-1 are made into integration.
In the present embodiment, the first row piston seat 1-2-1 of this piston includes following three parts with secondary series piston seat 1-2-2: be positioned at the slide rail 1-2-3 of both sides, the joint 1-2-5 that is connected smooth block accommodating body and said bizet bottom surface that is positioned at the smooth block accommodating body 1-2-4 that said circular slider accommodation hole is set of centre and is positioned at the centre; Wherein, there is lightening hole 1-2-6 between the slide rail 1-2-3 of said joint 1-2-5 and both sides; Said joint 1-2-5 is narrowed down to bizet 1-1 bottom surface direction by smooth block accommodating body 1-2-4, and its cross section adopts I shape.Said structure makes its integral body low weight, and has enough structural strengths.Wherein, said slide rail 1-2-3 cooperates with the to-and-fro motion slideway that body provides, and supports for the to-and-fro motion of this single action piston 1 provides motion.
Also illustrate among the figure, the bottom of the said first row piston seat 1-2-1 is provided with the mounting hole 1-2-7 that is used to be installed into oil pipe or oil-feed pin, and this mounting hole 1-2-7 is connected to the aperture surface of circular slider accommodation hole 1-3 through oil duct.Through being installed into oil pipe or oil-feed pin, this single action piston 1 can pump machine oil from oil sump and be used to lubricate.
Explain below in conjunction with Fig. 3 how single action piston 1 provided by the invention matches with two-way ram 2.
As shown in Figure 3, said two-way ram 2 inserts among the cannelure 1-3 between said first row piston seat 1-2-1 and the secondary series piston seat 1-2-2 with thickness direction.Settle identical smooth block respectively among first row piston seat circular slider accommodation hole 1-3-1 that said single action piston 1 is provided with respectively and the secondary series piston seat receiving hole 1-3-2 on the first row piston seat 1-2-1 and secondary series piston seat 1-2-2; And the installation phase place of these two smooth blocks is identical.Also be provided with circular slider accommodation hole on the guide portion of said two-way ram 2; Smooth block wherein also has been installed; Its phase place be installed in piston 1 on phase difference mutually 180 degree of smooth block; And be clipped between the smooth block of said first row piston seat 1-2-1 and secondary series piston seat 1-2-2, three smooth blocks interfix with pin or alternate manner.As long as guarantee in to-and-fro motion, not occur movement interference, said structure just can be with the working method work of circular slider-crank mechanism.Under the situation of selecting suitable structural parameter; This structure can make the central axis of the to-and-fro motion track of single action piston 1 and two-way ram 2 intersect at a point; Make the tracks of two reciprocating parts not have any distance in the crankshaft center line direction; Avoid adjacent reciprocating part moment of flexure on bent axle, to occur, thereby make whole motion obtain better counterbalance effect.In order to realize best effect, the quality of this single action piston 1 and said two-way ram 2 should be identical, equals to be installed in the quality of the smooth block on the two-way ram 2 in the quality of two smooth blocks settling on the single action piston 1.
Above embodiment is an embodiment preferred; In fact; This structure of piston parameter can be different; For example the first row piston and secondary series piston can be incomplete same, as long as can settle synchronous smooth block, its cannelure must guarantee to make the piston seat with the piston of its pairing to insert.
Present embodiment provides a kind of single action piston, in fact, on dynamic balance slide block, also can adopt identical structure, promptly adopts the guide portion of double column structure.In addition, two-way ram also can be set to double column structure by piston seat, and at this moment, for the needs that assemble, this two-way ram need adopt split type piston structure usually.
The piston or the dynamic balance slide block that adopt said structure are used for internal-combustion engine, promptly obtain the embodiment of internal-combustion engine of the present invention, the piston or the dynamic balance slide block that adopt said structure are used for compressor, promptly obtain the embodiment of compressor of the present invention.
The above only is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; Can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (10)
1. reciprocating part that is used for circular slider-crank mechanism, this reciprocating part comprises bizet and guide portion; Said guide portion is provided with circular slider accommodation hole; It is characterized in that; Said guide portion comprises the first row guide portion and secondary series guide portion, and said first row guide portion and secondary series guide portion are cut apart perpendicular to the cannelure of said circular slider accommodation hole by a median plane; The groove width of this cannelure is enough to hold the thickness with the guide portion of the reciprocating part of this reciprocating part pairing; The thickness of said guide portion specifically is meant the size of guide portion along this dimension of circular slider accommodation hole axis.
2. the reciprocating part that is used for circular slider-crank mechanism according to claim 1 is characterized in that, this reciprocating part is the dynamic balance slide block of single action piston or leaf-comb portion, and said cannelure opening is in the guide portion bottom surface.
3. the reciprocating part that is used for circular slider-crank mechanism according to claim 1 is characterized in that, the said first row guide portion of being cut apart by said cannelure is identical with said secondary series guide portion thickness.
4. the reciprocating part that is used for circular slider-crank mechanism according to claim 1 is characterized in that, said first row guide portion and the said secondary series guide portion cut apart by said cannelure have identical structure.
5. according to any described reciprocating part that is used for circular slider-crank mechanism of claim 1-4, it is characterized in that said guide portion and said bizet are made into integration.
6. according to any described reciprocating part that is used for circular slider-crank mechanism of claim 1-4; It is characterized in that the degree of depth of said cannelure adds the reciprocating stroke of this reciprocating part for the guide portion width of the pairing reciprocating part of this reciprocating part.
7. according to any described reciprocating part that is used for circular slider-crank mechanism of claim 1-4; It is characterized in that; The bottom of said first row guide portion or secondary series guide portion is provided with the mounting hole that is used to be installed into oil pipe or oil-feed pin, and this mounting hole is connected to the circular slider accommodation hole aperture surface through oil duct.
8. according to any described reciprocating part that is used for circular slider-crank mechanism of claim 1-4; It is characterized in that said first row guide portion and/or secondary series guide portion comprise following three parts: be positioned at the slide rail of both sides, the smooth block accommodating body that said circular slider accommodation hole is set in the middle of being positioned at and be positioned in the middle of connection smooth block accommodating body and the joint of said bizet bottom surface; Wherein, there is lightening hole between the slide rail of said joint and both sides; Said joint is narrowed down to bizet bottom surface direction by the smooth block accommodating body, and its cross section is an I shape.
9. an internal-combustion engine is characterized in that, uses aforesaid right to require any described reciprocating part that is used for circular slider-crank mechanism of 1-claim 8.
10. a compressor is characterized in that, uses aforesaid right to require any described reciprocating part that is used for circular slider-crank mechanism of 1-claim 8.
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010581946 CN102080724B (en) | 2010-12-06 | 2010-12-06 | Reciprocating piece for crank round slider mechanism, and internal combustion engine and compressor thereof |
| JP2013541180A JP6084163B2 (en) | 2010-12-06 | 2011-12-06 | Crank circular slider mechanism, reciprocating part, engine block, internal combustion engine, and compressor |
| ES11846356.1T ES2609450T3 (en) | 2010-12-06 | 2011-12-06 | Mechanism of circular sliding block of connecting rod and alternating organ, cylinder block, internal combustion engine and compressor |
| RU2013130986/06A RU2591981C2 (en) | 2010-12-06 | 2011-12-06 | Crank mechanism with round slide back-sliding part, engine unit, as well as internal combustion engine and compressor |
| BR112013013955-2A BR112013013955B1 (en) | 2010-12-06 | 2011-12-06 | circular crank sliding mechanism, alternative part, engine block, and internal combustion engine, compressor |
| PCT/CN2011/002038 WO2012075680A1 (en) | 2010-12-06 | 2011-12-06 | Crank circular sliding block mechanism and reciprocating member, cylinder block, internal combustion engine, and compressor |
| US13/991,557 US9593579B2 (en) | 2010-12-06 | 2011-12-06 | Crank circular sliding block mechanism and reciprocating member, cylinder block, internal combustion engine, and compressor |
| EP11846356.1A EP2650502B1 (en) | 2010-12-06 | 2011-12-06 | Crank circular sliding block mechanism and reciprocating member, cylinder block, internal combustion engine, and compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010581946 CN102080724B (en) | 2010-12-06 | 2010-12-06 | Reciprocating piece for crank round slider mechanism, and internal combustion engine and compressor thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102080724A CN102080724A (en) | 2011-06-01 |
| CN102080724B true CN102080724B (en) | 2012-09-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010581946 Expired - Fee Related CN102080724B (en) | 2010-12-06 | 2010-12-06 | Reciprocating piece for crank round slider mechanism, and internal combustion engine and compressor thereof |
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| Country | Link |
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| CN (1) | CN102080724B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10151269B2 (en) * | 2016-06-16 | 2018-12-11 | GM Global Technology Operations LLC | Mass efficient piston |
| CN112695471B (en) * | 2020-12-23 | 2022-09-09 | 浙江信胜科技股份有限公司 | Embroidery machine balance weight mechanism capable of avoiding increase of front and back vibration and embroidery machine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1060372A (en) * | 1963-11-13 | 1967-03-01 | Bancroft Charles | Improvements in or relating to reciprocating compressors, pumps, engines and the like |
| CN1144879A (en) * | 1995-06-13 | 1997-03-12 | 黎正中 | Crank and double-round slide reciprocating piston internal combustion engine |
| CN101718340A (en) * | 2009-12-28 | 2010-06-02 | 北京中清能发动机技术有限公司 | Reciprocation-rotary motion switching mechanism H-shaped engine body, dynamic balance slide block and equipment |
-
2010
- 2010-12-06 CN CN 201010581946 patent/CN102080724B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1060372A (en) * | 1963-11-13 | 1967-03-01 | Bancroft Charles | Improvements in or relating to reciprocating compressors, pumps, engines and the like |
| CN1144879A (en) * | 1995-06-13 | 1997-03-12 | 黎正中 | Crank and double-round slide reciprocating piston internal combustion engine |
| CN101718340A (en) * | 2009-12-28 | 2010-06-02 | 北京中清能发动机技术有限公司 | Reciprocation-rotary motion switching mechanism H-shaped engine body, dynamic balance slide block and equipment |
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| CN102080724A (en) | 2011-06-01 |
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