CN101644330B - Piston and internal combustion engine of circular slider-crank mechanism - Google Patents
Piston and internal combustion engine of circular slider-crank mechanism Download PDFInfo
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- CN101644330B CN101644330B CN2009100871853A CN200910087185A CN101644330B CN 101644330 B CN101644330 B CN 101644330B CN 2009100871853 A CN2009100871853 A CN 2009100871853A CN 200910087185 A CN200910087185 A CN 200910087185A CN 101644330 B CN101644330 B CN 101644330B
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Abstract
The invention discloses a piston of a circular slider-crank mechanism, comprising top, skirt and a piston seat, wherein, the skirt comprises an installation seat and an extension part extending along the profile of the installation seat; a circular slider containing hole is arranged on the piston seat; the top is fixedly assembled on an end face which is positioned on the installation seat and is opposite to the extension direction of the extension part; one end of the piston seat is fixedly assembled on an end face which is positioned on the installation seat and is opposite to the end face on which the top is installed. Locating viaholes are arranged on the installation seat and locating blind holes are arranged in the corresponding positions of the top and the piston seat. The locating blind holes on the piston seat and at the top are respectively communicated with oil supply channels on the piston seat and at the top. During assembling, hollow locating pins pass through the locating viaholes and are respectively inserted into the locating blind holes at the top and on the piston seat. The oil supply channels at the top of the piston and on the piston seat are communicated. The piston of the invention can realize working under lubricating oil pressure and cooling of the top of the piston. The invention also provides an internal combustion engine.
Description
Technical field
The present invention relates to piston, be specifically related to a kind of piston of circular slider-crank mechanism.The present invention also relates to a kind of internal-combustion engine of circular slider-crank mechanism simultaneously.
Background technique
In traditional internal-combustion engine, convert the to-and-fro motion of piston into bent axle rotatablely move through brace and connecting rod framework, and then by the corresponding moving element of this crank-driven, externally outputting power.Yet defectives such as in described connecting rod, because the existence of connecting rod, that the internal-combustion engine of connecting rod has is bulky, heavy, balance quality difference.
For addressing the above problem, the authorization day for announcing is that the Chinese patent that January 13, notification number in 1988 are CN85200358B discloses a kind of " crankshaft circular slide block reciprocating piston internal combustion engine "; Notice of authorization day is June 27 calendar year 2001, notice of authorization number to disclose a kind of " crank and double-round slide reciprocating piston internal combustion engine " for the Chinese patent of CN1067741C; Notice of authorization day is June 27 calendar year 2001, notice of authorization number to disclose a kind of " crank and multi-round slide reciprocating piston internal combustion engine " for the Chinese patent of CN1067742C.
The disclosed internal-combustion engine common feature of above-mentioned Chinese patent is in to-and-fro motion and the switching mechanism that rotatablely moves wherein, has replaced connecting rod with smooth block, has replaced connecting rod with circular slider-crank mechanism.This make to-and-fro motion and rotatablely move between switching mechanism be able to simplify, adopt the internal-combustion engine of this switching mechanism to descend, weight saving, and balance quality is good with respect to traditional internal-combustion engine volume.
Concrete, in the movement conversion mechanism of circular slider-crank mechanism, the piston seat of piston is provided with circular slider accommodation hole, and smooth block is provided with eccentric circular hole.During assembling, smooth block is placed described circular slider accommodation hole, smooth block can rotate in said circular slider accommodation hole; The crank pin of bent axle is assemblied in the described eccentric circular hole, and crank pin also can rotate in said eccentric circular hole.Driving the smooth block that is arranged at wherein through piston moves reciprocatingly; And smooth block rotates in said piston simultaneously, and said to-and-fro motion rotates around the central axis of bent axle with the synthetic central axis of the eccentric circular hole on the smooth block that makes that rotatablely moves; And the dead in line of the crank pin of the central axis of said eccentric circular hole and bent axle, thereby can realize the conversion that rotatablely moves that reciprocates to bent axle of piston.
The piston of the above-mentioned disclosed circular slider-crank mechanism of Chinese patent and the piston of traditional connecting rod have bigger different; Thereby; Its cooling and lubrication system are also different with described traditional piston, need the new structure of development to adapt to the piston cooling and the lubricated requirement of this circular slider-crank mechanism.
Summary of the invention
The present invention provides a kind of piston of circular slider-crank mechanism, and piston of the present invention has the fuel feeding path, can be implemented under the pressure lubrication oil work and to the cooling of piston head.
The present invention provides a kind of internal-combustion engine in addition, internal-combustion engine of the present invention have a higher working stability.
The piston of a kind of circular slider-crank mechanism provided by the invention comprises at least: top, skirt section and piston seat; Said skirt section comprises fitting seat and the extension part that extends along said fitting seat side; Said piston seat is provided with circular slider accommodation hole; Said roof anchorage is assemblied on the said fitting seat bearing of trend opposing end faces with said extension part; One end of said piston seat fixedly is assemblied on the said fitting seat and the end face opposing end faces that said top is installed;
On said fitting seat, also be provided with positioning through hole, at said top and the end face of the fixing assembling of piston seat and said fitting seat also be provided with the location blind hole with said positioning through hole relevant position;
Location blind hole on the said piston seat is communicated with the oil supply gallery of this piston seat; Location blind hole on the said top is communicated with the oil supply gallery at this top;
During assembling, locating stud passes said positioning through hole and inserts respectively in the location blind hole of joint of said top and piston seat; Wherein,
Said locating stud is a hollow pin, is communicated with the oil supply gallery of piston seat through the oil supply gallery of said locating stud with said piston head.
Optional, the oil supply gallery at said top comprise be arranged at said top towards the end face of said fitting seat, be centered close to the annular groove of these end face central authorities and the straight trough that said annular groove is communicated with the location blind hole at said top.
Optional, on the fitting seat in said skirt section, be provided with return port with said straight trough bearing of trend opposite direction and the position that communicates with annular groove.
Optional, the oil supply gallery that is communicated with location this piston seat blind hole on the said piston seat is communicated with circular slider accommodation hole.
Optional, the fitting seat in said skirt section is provided with through hole, is provided with blind hole at said top towards the end face of said fitting seat and with the corresponding position of said through hole; During assembling, link passes said through hole and is inserted in the said blind hole, said roof anchorage is assemblied on the fitting seat in said skirt section.
Optional, be provided with joint at the end with the fixing assembling in said skirt section of said piston seat; On said joint, be provided with connecting through hole with said fitting seat through hole relevant position, said link also passes said connecting through hole, and said piston seat fixedly is assemblied on the said fitting seat.
Optional, said blind hole is a tapped hole, and said through hole and connecting through hole are common circular hole, and said link is a bolt.
Optional, the fitting seat in said skirt section is provided with through hole, also is provided with through hole in the corresponding position of the through hole in said top and said skirt section; The end with the fixing assembling in said skirt section at said piston seat is provided with joint; On said joint, be provided with connecting through hole with said fitting seat through hole relevant position; During assembling; Said link passes through hole and the through hole at top on said connecting through hole, the fitting seat simultaneously, and said piston seat and roof anchorage are assemblied on the said fitting seat; Wherein, said link is rivet or screw bolt and nut.
Optional, the edge that is used to assemble the end face at said top at said fitting seat is provided with inner stopper, is provided with the outer stopper that matches with said inner stopper towards the edge of the end face of said fitting seat at said piston head.
Optional, be provided with the firing chamber in said piston head and end face opposing end faces towards said fitting seat.
Optional; Said firing chamber comprise by near arbitrary zone of top to respect to the main groove that the edge extends, the degree of depth shoals gradually, width narrows down gradually, and said main groove extend to the top center position to the both sides bifurcated form, with respect to a groove of said main groove symmetry.
Optional, the material of said piston head is carbon steel, alloyed steel, stainless steel or titanium alloy, and the material of said piston skirt is an aluminum alloy, and the material of said piston seat is an aluminum alloy.
Optional, be provided with strengthening rib in the both sides of said piston seat, the end face edge of the said circular slider accommodation hole in edge and the zone of the said piston seat waist of process.
Optional, said strengthening rib is the arc block plate along the annular catch on the whole all edges of said circular slider accommodation hole or all edges of said circular slider accommodation hole part, edge.
Optional, be equipped with skirt section identical and piston head at the other end of said piston seat with this end.
Optional, be equipped with counterweight at the other end of said piston seat and insert.
The present invention also provides a kind of internal-combustion engine of circular slider-crank mechanism, comprises the described piston of above-mentioned arbitrary technological scheme.
Compared with prior art, technological scheme of the present invention has the following advantages at least:
In piston of the present invention, the location blind hole of piston seat is communicated with the oil supply gallery of this piston seat; The location blind hole at said top is communicated with the oil supply gallery at this top; Locating stud through hollow is communicated with the oil supply gallery of said piston seat with the oil supply gallery at said top, and forms return path through return port; Can realize that piston of the present invention is in the lubricated work down of pressure oil with to the cooling of piston head; Can reduce the heat load of piston to the cooling of piston head; Improve the operating conditions of piston and piston ring, increase reliability, can satisfy the requirement of the piston of high speed, high-intensity internal-combustion engine.
In addition, in the piston of the present invention, piston comprises top, skirt section and piston seat three parts at least, and above-mentioned three partial fixings are assembled together, and can select the material of piston each several part as required, satisfying different needs, thereby can improve versatility.
In addition, the each several part of piston of the present invention can be made respectively, then each several part is fitted together, and with respect to head (or bizet) and the integrally formed piston of piston seat, simplified manufacturing process, and combination is also very convenient, adapts to produce in batches.
Description of drawings
The plan view of the piston of the circular slider-crank mechanism that Fig. 1 provides for embodiments of the invention.
Fig. 2 is the plan view at top of piston of the circular slider-crank mechanism of embodiments of the invention;
Fig. 3 is the bottom view at top of piston of the circular slider-crank mechanism of embodiments of the invention;
Fig. 4 is Fig. 2 and Fig. 3 generalized section along YY ' direction;
Fig. 5 is the plan view of the piston skirt of embodiments of the invention;
Fig. 6 is the bottom view of the piston skirt of embodiments of the invention
Fig. 7 is along the generalized section of XX ' direction among Fig. 5;
Fig. 8 is along the generalized section of YY ' direction among Fig. 5;
Fig. 9 is the schematic representation of the piston seat of embodiments of the invention;
Figure 10 is the schematic representation of joint of one of them end of the piston seat of embodiments of the invention;
Figure 11 is the schematic representation of the two-way ram of circular slider-crank mechanism of the present invention.
Embodiment
Below in conjunction with concrete embodiment and accompanying drawing the piston of the circular slider-crank mechanism of single cylinder engine of the present invention is carried out detailed explanation.
The plan view of the piston of the circular slider-crank mechanism that Fig. 1 provides for embodiments of the invention.Wherein, Shown in Fig. 1 is single action piston, promptly only is equipped with piston skirt and top in one of them end of the piston seat of piston, is to be understood that; Piston of the present invention also can be a two-way ram, promptly in an other end of piston seat skirt section and top is installed simultaneously also.Present embodiment only is equipped with the piston that circular slider-crank mechanism of the present invention is explained at piston skirt and top as an example with an end of piston seat; Other skirt section and top also can be installed with the same or analogous mode of embodiments of the invention in the other end of piston seat, form two-way ram.
Please refer to Fig. 1, the piston of the circular slider-crank mechanism of embodiments of the invention comprises piston seat 1, skirt section 2 and top 3.Wherein, said piston seat 1 is provided with circular slider accommodation hole (this figure is not shown).Said skirt section 2 comprises fitting seat 2-1 and the extension part 2-2 that extends along said fitting seat 2-1 side.Said top 3 fixedly is assemblied on the said fitting seat 2-1 and the bearing of trend opposing end faces of said extension part 2-2.One end of said piston seat 1 fixedly is assemblied in said fitting seat 2-1 and goes up and the end face opposing end faces that said top 3 is installed.In the present embodiment, said top 3 and piston seat 1 fixedly are assemblied on the fitting seat 2-1 in said skirt section 2 simultaneously through link 4.
Said fitting seat 2-1 is provided with positioning hole through hole (not indicating); Be provided with location blind hole (not indicating) in the relevant position of said top 3 and guide piston seat 1; Locating stud 5 passes said through hole, inserts in the blind hole of corresponding location; Be used for when said top 3, fitting seat 2 and piston seat 1 are assembled together, positioning.Wherein, said locating stud 5 is a hollow pin, can oil supply gallery in the said piston seat 1 and the oil supply gallery in the top 3 be coupled together (concrete description please refer to down the explanation respectively in the face of each parts)
Respectively assembly top 3, skirt section 2 and piston seat 1 are described respectively below.
At first combine Fig. 2, Fig. 3 and Fig. 4 that assembly piston head 2 is described.
Fig. 2 is the plan view at top 3 of piston of the circular slider-crank mechanism of embodiments of the invention, and Fig. 3 is the bottom view at top 3, and Fig. 4 is Fig. 2 and Fig. 3 generalized section along YY ' direction.
Please refer to Fig. 2, Fig. 3 and Fig. 4, the side of the piston head 3 of present embodiment can be provided with compression ring annular groove 3-1.Be provided with blind hole 3-2 at said piston head 3 towards the end face of fitting seat 2-1 shown in Figure 1, when being used for that said top 3 is assemblied in said fitting seat, fixing said top 3.
Said blind hole 3-2 is a tapped hole.The 3-2 of blind hole described in the present embodiment is 2, is symmetrically distributed in the both sides of said top 3 end face axis, and it distributes shown in the bottom view of Fig. 3.
In addition, the quantity that those skilled in the art can be provided with blind hole 3-2 according to the needs of assembling is 3 or a plurality of, repeats no more here.
Also be provided with location blind hole 3-4 at said piston head 3 towards the central authorities of fitting seat 2-1 end face shown in Figure 1; Said location blind hole 3-4 can be common circular hole; It is corresponding with the positioning through hole (please refer to down the description in the face of fitting seat) on the fitting seat 2-1; When being used for that piston head 3 is assemblied in fitting seat, cooperate locating stud to play location and leading role.Certainly, said location blind hole 3-4 also can be distributed in other position of said end face, also can use blind hole location, a plurality of location, no longer describes here.
Said location blind hole 3-4 is connected with oil supply gallery on this top 3.In the present embodiment; Said oil supply gallery comprise be arranged at said top 3 towards the end face of said fitting seat, be centered close to the annular groove 3-3 of these end face central authorities and the straight trough 3-8 that said annular groove 3-3 is communicated with the location blind hole at said top 3, like Fig. 3 and shown in Figure 4.In addition, the oil supply gallery of other form can be set also, describe no longer one by one here.
Wherein, also has the loss of weight effect at said annular groove 3-3 and straight trough.Also can be at the top other position of 3 the loss of weight groove of other shapes is set, be not described in detail here.
Towards the edge of the end face of fitting seat 2-1 shown in Figure 1 outer stopper 3-5 (like Fig. 3 and shown in Figure 4) can also be set at said piston head 3, this outer stopper 3-5 matches with inner stopper (can with reference to down in the face of the description of the structure of piston skirt) on being arranged at fitting seat 2-1.Wherein, said outer stopper 3-5 can also can only be arranged at the part week edge of said end face along whole all edges of said end face edge.Only describe in the present embodiment with the situation that is provided with outer stopper 3-5 on whole all edges.
In addition, can also be provided with the firing chamber in said piston head 3 and end face opposing end faces towards fitting seat 2-1 shown in Figure 1.The shape of the firing chamber of present embodiment such as Fig. 2 and shown in Figure 4; Comprise by near any zone of top to respect to the main groove 3-6 that the edge extends, the degree of depth shoals gradually, width narrows down gradually, and said main groove 3-6 extend to the top center position to the both sides bifurcated form, with respect to a groove 3-7 of said main groove 3-6 symmetry.The piston applications that will comprise said firing chamber can improve combustion efficiency when diesel engine, reduce burning and consume.Certainly, the firing chamber of other shape also can be set, repeat no more here at the end face of said piston head 3.
Below in conjunction with Fig. 5, Fig. 6, Fig. 7 and Fig. 8 the piston skirt 2 of embodiments of the invention is described.
Fig. 5 is the plan view of the piston skirt 2 of embodiments of the invention; Fig. 6 is the bottom view in skirt section 2, Fig. 7 be among Fig. 5 along the generalized section of XX ' direction, Fig. 8 is along the generalized section of YY ' direction among Fig. 5.
Please refer to Fig. 7 and Fig. 8, the piston skirt 2 in the present embodiment comprises fitting seat 2-1 and the extension part 2-2 integrally formed with said fitting seat 2-1.Wherein, said fitting seat 2-1 can be used as the pedestal when said skirt section 2 and top 3 and piston seat 1 assembling.Said extension part 2-2 extends along the side of said fitting seat 2-1, and the length of extension can be confirmed according to the actual demand of piston.For example, when being used for two stroke diesel engine, the extension part 2-2 in this skirt section 2 can be used as the parts that block that block relief opening; In addition, this extension part 2-2 also has leading role.Those skilled in the art can combine length and the shape of actual demand design piston seat 2-2 according to the instruction of this specification, no longer launch here to discuss.
Please refer to Fig. 5, Fig. 6, Fig. 7 and Fig. 8, the corresponding position of blind hole 3-2 with top 3 shown in Figure 3 on the fitting seat 2-1 of said piston skirt 2 is provided with through hole 2-3.When said through hole 2-3 is used for that said top 3 is assemblied in said fitting seat, with blind hole 3-2 shown in Figure 3 and the said top 3 of link 4 matching and fixing shown in Figure 1.
Said through hole 2-3 can be a tapped hole, can be common circular hole also, and in the present embodiment, said through hole is common circular hole.The distribution of said through hole 2-3 and number can be identical with said blind hole 3-2.
On said fitting seat 2-1, also be provided with positioning through hole 2-4 with blind hole 3-4 relevant position, location shown in Figure 4.In the present embodiment, said positioning through hole 2-4 is positioned at said fitting seat 2-1 central position.Said positioning through hole 2-4 cooperates with locating stud 5 shown in Figure 1 and location blind hole 3-4 shown in Figure 4, when assembling, is used for location and guiding.Certainly, the locating stud 5 in the present embodiment is a hollow pin, also as cooling or lubricated oil supply gallery.
Corresponding position, arbitrary position with Fig. 3 or annular groove 3-3 shown in Figure 4 on said fitting seat 2-1 also is provided with return port 2-7; The 2-7 of return port described in the present embodiment is arranged at and said straight trough 3-8 bearing of trend opposite direction and the position that communicates with annular groove, like Fig. 5 or Fig. 6 or shown in Figure 7.Said return port 2-7 can be the through hole of arbitrary shape, is circular port in the present embodiment.Said return port 2-7 cooperates with oil supply gallery in top 3 and the piston seat described below 1, forms current return circuit, is mainly used in cold oil or lubricant oil through the oil supply gallery of piston head 3 are back in the cylinder.
The edge that is used to assemble the end face at said top 3 at said fitting seat 2-1 also is provided with inner stopper 2-5, and the position of said inner stopper 2-5 is corresponding with outer stopper 3-5 shown in Figure 4, and size matches with said outer stopper 3-5.
Wherein, said inner stopper 2-5 can also can only be arranged at the part week edge of said end face along whole all edges of said fitting seat 2-1 end face edge.In the present embodiment with outer stopper shown in Figure 4 to adaptation, whole week along being provided with inner stopper 2-5.
Through being arranged at the outer stopper 3-5 on the said top 3 and being arranged at the inner stopper 2-5 on the said assembly department, when being installed on top 3 on the fitting seat 2-1, has leading role on the one hand; Also has positioning action on the one hand.Certainly, other structure and parts can also be set perhaps cooperate, to reach described location and leading role with other structure or parts.For example, in the present embodiment, also use locating stud and positioning hole (comprising through hole and blind hole) to position simultaneously and lead.
In addition, also can part week of the end face of fitting seat 2-1 along inner stopper is set, end face part week at said top 3 along being provided with and the corresponding outer stopper of this inner stopper.
In addition, loss of weight groove 2-6 can also be set on said fitting seat 2-1,, alleviating the weight of piston skirt 2, thereby alleviate the weight of whole piston like Fig. 7 and Fig. 8.In addition, said loss of weight groove 2-6 can cooperate with the annular groove 3-3 in the top 3, forms the fuel feeding path.Loss of weight groove 2-6 can certainly be set.
Below in conjunction with Fig. 9 and Figure 10 the piston seat 1 of embodiments of the invention is described.
Fig. 9 is the schematic representation of the piston seat of embodiments of the invention, and Figure 10 is the schematic representation of joint of one of them end of the piston seat of embodiments of the invention.
Please refer to Fig. 9, the piston seat 1 of embodiments of the invention has two relative directed side 1-2, and the surface of said directed side 1-2 is an arc shaped surface, so that when being assemblied in said piston in the cylinder, can match with the inwall of cylinder.
On said piston seat 2, also be provided with the circular slider accommodation hole 1-1 of the smooth block that is used to hold circular slider-crank mechanism.Wherein, the diameter of said circular slider accommodation hole 1-1, rotates with this crank pin that drives in the eccentric circular hole that is installed on smooth block so that when smooth block is installed on wherein, can rotate by said relatively piston seat 2 greater than the smooth block that is assemblied in wherein.
In addition,, can carry out particular processing, form wearing face the inner wall surface of said circular slider accommodation hole 1-1 for improving abrasive resistance; Perhaps sliding bearing, for example bearing shell are installed in said inner wall surface.For reducing friction, also can rolling bearing be installed at the inwall of said circular slider accommodation hole 1-1, for example, needle bearing, the friction when rotating, the capacity loss when reducing movement conversion to reduce smooth block.Certainly, also can take other measure to improve the wear-resisting property of circular slider accommodation hole and reduce and rub, enumerate no longer one by one here.
In addition, in the both sides of said piston seat 1, the end face edge of the said circular slider accommodation hole 1-1 in edge and the zone of said piston seat 1 waist of process strengthening rib (not shown) can also be set, to strengthen the intensity of this piston seat waist.For example, said strengthening rib can be along the annular catch on the whole all edges of said circular slider accommodation hole 1-1 or the arc block plate on all edges of said circular slider accommodation hole 1-1 part, edge.Said strengthening rib can fixedly be assemblied on the said piston seat 1 with modes such as riveted joint, welding or screw connections, no longer launches here to discuss.
One of them end at said piston seat 1 also is provided with joint 1-3.Please refer to Figure 10, said joint 1-3 is stretched out by the end of said piston seat 1 and forms.On said joint 1-3, be provided with connecting through hole 1-4 with the corresponding position of through hole 2-3 shown in Figure 8, said connecting through hole 1-4 cooperates with said through hole 2-3 and link 4 shown in Figure 1, is used for said piston seat 1 fixedly is assembled together with skirt section 2.Wherein, said connecting through hole 1-4 can be a tapped hole, can be common circular hole also, is common circular hole in the present embodiment.
On the end face that joint 1-3 is set of said piston seat 1, also be provided with location blind hole 1-5, cooperate with locating stud 5 shown in Figure 1 when said location blind hole 1-5 is used for this piston seat 1 with skirt section 2 fixing assemblings to play the role of positioning with Fig. 7 and the corresponding position of positioning through hole 2-4 shown in Figure 8.Certainly, other positioning element or structure can also be set, when the two is installed, to play the role of positioning.
Said location blind hole 1-5 is communicated with oil supply gallery 1-6 on this piston seat 1, like Fig. 1 and shown in Figure 10.In the present embodiment, oil supply gallery 1-6 also is communicated with circular slider accommodation hole 1-1.Thereby this oil supply gallery 1-6 can be communicated with smooth block in being arranged at this circular slider accommodation hole 1-1 and the oil supply gallery that passes on the crank pin of eccentric circle slide opening of said smooth block.
During assembling; Make locating stud shown in Figure 15 pass the positioning through hole 2-4 among the fitting seat 2-1 in said skirt section 2; And stretch out by the two ends of said through hole 2-4; Can said piston head 3 be placed fitting seat 2-1 and the opposite end face of bearing of trend its extension part 2-2 of said piston skirt 2, and the end face at said top 3 and the end face of said fitting seat 2-1 are close together with reference to figure 1.In addition, an end of said locating stud 5 is inserted among the location blind hole 3-4 in the said top 3; Blind hole 3-2 and the through hole 2-3 on the said fitting seat 2-1 on the said top 3 are aligned; Outer stopper 3-5 on the said top 3 matches with inner stopper 2-5 on the said fitting seat 2-1.
Place the fitting seat 2-1 of said piston skirt 2 to go up and the end face opposing end faces that said top 3 is installed the joint 1-3 of said piston seat 1; As shown in Figure 1; The other end of locating stud 5 is inserted among the location blind hole 1-5 on the said piston seat 1; And connecting through hole 1-4 and the through hole 2-3 on the said fitting seat 2-1 on the said joint 1-3 are aligned, and simultaneously with said piston head 3 on blind hole 3-2 align.Then, link 4 is passed the connecting through hole 1-4 on the said joint, the through hole 2-3 on the assembly department successively, insert among the blind hole 3-2 at said top 3.In the present embodiment, said link 4 is screw or bolt.
Certainly, also can be the typical circular through hole in the position of the blind hole 3-2 at said top 3, at this moment, available rivet fixedly is assembled together described top 3, the fitting seat 2-1 in skirt section 2 and the joint 1-3 of piston seat 1 as link.In addition, said link also can be a screw bolt and nut.
The material of said piston head 3 can be to be carbon steel, alloyed steel, stainless steel or titanium alloy, to improve the intensity of piston.The skirt section 2 of said piston and the material of piston seat 1 are can aluminum alloy, to alleviate the whole quality of piston.
In the piston of embodiments of the invention, the location blind hole 1-5 of said piston seat 1 is communicated with the oil supply gallery of this piston seat 1; The location blind hole 3-4 at said top 3 is communicated with the oil supply gallery at this top; Be communicated with the oil supply gallery at said top 3 through the oil supply gallery of said locating stud 5, and form return path through return port 2-7 with said piston seat 1.The piston that can realize embodiments of the invention is in the lubricated work down of pressure oil with to the cooling of piston head 3; Can reduce the heat load of piston to the cooling of piston head 3; Improve the operating conditions of piston and piston ring; Increase reliability, can satisfy the requirement of the piston of high speed, high-intensity internal-combustion engine.
In addition, piston comprises top 3, skirt section 2 and piston seat 1 three parts at least, and above-mentioned three partial fixings are assembled together.Can select the material of piston each several part as required, satisfying different needs, thereby improve versatility, for example, when needs reduced cost, above-mentioned each several part all can be with steel or cast iron manufacturing; And when needs reduce total quality and don't hope to sacrifice intensity, can adopt the top with alloyed steel or carbon steel, remaining part is with the firm top and aluminum skirt structure of aluminum alloy.
In addition, the piston each several part of embodiments of the invention can be made respectively, then each several part is fitted together, and with respect to head (or bizet) and the integrally formed piston of piston seat, simplified manufacturing process, and combination is also very convenient, adapts to produce in batches.
In the embodiments of the invention; Through the connecting through hole 1-4 on the joint 1-3 of through hole 2-3 on the fitting seat 2-1 in the blind hole 3-2 on link 4 and the top 3, skirt section 2 and piston seat 1, simultaneously said top 3, skirt section 2 and piston seat 1 fixedly are assembled together.In addition, assembling can be fixed with said top 3 and piston seat 1 respectively in institute skirt section 2, is not described in detail here, and those skilled in the art can make corresponding change according to the instruction of this specification.
In the above embodiments, only be that example is illustrated with the single action piston, in the case, the other end of this piston seat can be unsettled, also can install to be used for inserting of counterweight.Should be appreciated that at the other end and also can assemble other skirt section and top, form two-way ram with identical with the above embodiments or akin mode, shown in figure 11.Certainly, this other end can assemble the piston crown or the head of the circular slider-crank mechanism of other form.Need to prove; The foregoing description should be as the restriction to claim protection domain of the present invention to the description of ins and outs; Under the condition of the protection domain that does not deviate from claim; Those skilled in the art instruct according to an embodiment of the invention, with recognize many other distortion, substitute or revise.
In addition, the piston described in the foregoing description can be applied in the single-cylinder engine of circular slider-crank mechanism, thereby can improve the stability of the work of internal-combustion engine, increases the service life.
Though the present invention with preferred embodiment openly as above; But it is not to be used for limiting the present invention; Any those skilled in the art are not breaking away from the spirit and scope of the present invention; Can make possible change and modification, so protection scope of the present invention should be as the criterion with the scope that claim of the present invention was defined.
Claims (17)
1. the piston of a circular slider-crank mechanism is characterized in that comprising at least: top, skirt section and piston seat; Said skirt section comprises fitting seat and the extension part that extends along said fitting seat side; Said piston seat is provided with circular slider accommodation hole; Said roof anchorage is assemblied on the said fitting seat bearing of trend opposing end faces with said extension part; One end of said piston seat fixedly is assemblied on the said fitting seat and the end face opposing end faces that said top is installed;
On said fitting seat, also be provided with positioning through hole, at said top and the end face of the fixing assembling of piston seat and said fitting seat also be provided with the location blind hole with said positioning through hole relevant position;
Location blind hole on the said piston seat is communicated with the oil supply gallery of this piston seat; Location blind hole on the said top is communicated with the oil supply gallery at this top;
During assembling, locating stud passes said positioning through hole and inserts respectively in the location blind hole of joint of said top and piston seat; Wherein,
Said locating stud is a hollow pin, is communicated with the oil supply gallery of piston seat through the oil supply gallery of said locating stud with said piston head.
2. the piston of circular slider-crank mechanism as claimed in claim 1 is characterized in that: the oil supply gallery at said top comprise be arranged at said top towards the end face of said fitting seat, be centered close to the annular groove of these end face central authorities and the straight trough that said annular groove is communicated with the location blind hole at said top.
3. the piston of circular slider-crank mechanism as claimed in claim 2 is characterized in that: on the fitting seat in said skirt section, be provided with return port with said straight trough bearing of trend opposite direction and the position that communicates with annular groove.
4. like the piston of the described circular slider-crank mechanism of the arbitrary claim of claim 1 to 3, it is characterized in that: the oil supply gallery that is communicated with location this piston seat blind hole on the said piston seat is communicated with circular slider accommodation hole.
5. like the piston of the described circular slider-crank mechanism of the arbitrary claim of claim 1 to 3; It is characterized in that: the fitting seat in said skirt section is provided with through hole, is provided with blind hole at said top towards the end face of said fitting seat and with the corresponding position of said through hole; During assembling, link passes said through hole and is inserted in the said blind hole, said roof anchorage is assemblied on the fitting seat in said skirt section.
6. the piston of circular slider-crank mechanism as claimed in claim 5 is characterized in that: the end with the fixing assembling in said skirt section at said piston seat is provided with joint; On said joint, be provided with connecting through hole with said fitting seat through hole relevant position, said link also passes said connecting through hole, and said piston seat fixedly is assemblied on the said fitting seat.
7. the piston of circular slider-crank mechanism as claimed in claim 6, it is characterized in that: said blind hole is a tapped hole, and said through hole and connecting through hole are common circular hole, and said link is a bolt.
8. like the piston of the described circular slider-crank mechanism of the arbitrary claim of claim 1 to 3, it is characterized in that: the fitting seat in said skirt section is provided with through hole, also is provided with through hole in the corresponding position of the through hole in said top and said skirt section;
The end with the fixing assembling in said skirt section at said piston seat is provided with joint; On said joint, be provided with connecting through hole with said fitting seat through hole relevant position,
During assembling, said link passes through hole and the through hole at top on said connecting through hole, the fitting seat simultaneously, and said piston seat and roof anchorage are assemblied on the said fitting seat;
Wherein, said link is rivet or screw bolt and nut.
9. like the piston of claim 1 or 2 or 3 or 6 or 7 described circular slider-crank mechanisms; It is characterized in that: the edge that is used to assemble the end face at said top at said fitting seat is provided with inner stopper, is provided with the outer stopper that matches with said inner stopper towards the edge of the end face of said fitting seat at said piston head.
10. like the piston of claim 1 or 2 or 3 or 6 or 7 described circular slider-crank mechanisms, it is characterized in that: said piston head be provided with the firing chamber towards the end face opposing end faces of said fitting seat.
11. the piston of circular slider-crank mechanism as claimed in claim 10; It is characterized in that: said firing chamber comprise by near arbitrary zone of top to respect to the main groove that the edge extends, the degree of depth shoals gradually, width narrows down gradually, and said main groove extend to the top center position to the both sides bifurcated form, with respect to a groove of said main groove symmetry.
12. piston like claim 1 or 2 or 3 or 6 or 7 or 11 described circular slider-crank mechanisms; It is characterized in that: the material of said piston head is carbon steel, alloyed steel, stainless steel or titanium alloy; The material of said piston skirt is an aluminum alloy, and the material of said piston seat is an aluminum alloy.
13. the piston like claim 1 or 2 or 3 or 6 or 7 or 11 described circular slider-crank mechanisms is characterized in that: be provided with strengthening rib in the both sides of said piston seat, the end face edge of the said circular slider accommodation hole in edge and the zone of the said piston seat waist of process.
14. the piston of circular slider-crank mechanism as claimed in claim 13 is characterized in that: said strengthening rib is the annular catch on the whole all edges of said circular slider accommodation hole, edge or the arc block plate on all edges of said circular slider accommodation hole part, edge.
15. the piston like claim 1 or 2 or 3 or 6 or 7 described circular slider-crank mechanisms is characterized in that: the other end at said piston seat is equipped with skirt section identical with this end and piston head.
16. the piston like claim 1 or 2 or 3 or 6 or 7 described circular slider-crank mechanisms is characterized in that: be equipped with counterweight at the other end of said piston seat and insert.
17. the internal-combustion engine of a circular slider-crank mechanism is characterized in that: comprise the described piston of the arbitrary claim of claim 1 to 16.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100871853A CN101644330B (en) | 2009-06-10 | 2009-06-10 | Piston and internal combustion engine of circular slider-crank mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100871853A CN101644330B (en) | 2009-06-10 | 2009-06-10 | Piston and internal combustion engine of circular slider-crank mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101644330A CN101644330A (en) | 2010-02-10 |
| CN101644330B true CN101644330B (en) | 2012-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100871853A Expired - Fee Related CN101644330B (en) | 2009-06-10 | 2009-06-10 | Piston and internal combustion engine of circular slider-crank mechanism |
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| Country | Link |
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| CN (1) | CN101644330B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104681316B (en) * | 2015-02-17 | 2018-12-28 | 沈阳天眼智云信息科技有限公司 | The electromechanical integration integrating apparatus of tap switch |
| WO2018050952A1 (en) * | 2016-09-16 | 2018-03-22 | Wärtsilä Finland Oy | A method of and an arrangement for fastening a hot article to a cold article |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE969838C (en) * | 1952-02-02 | 1958-07-24 | Maybach Motorenbau G M B H | Multi-part internal combustion engine piston |
| EP0410453A1 (en) * | 1989-07-26 | 1991-01-30 | Sanden Corporation | Lubricating mechanism for a piston assembly of a slant plate type compressor |
| CN1839254A (en) * | 2003-08-19 | 2006-09-27 | 玛勒有限公司 | Split piston for an internal combustion engine |
-
2009
- 2009-06-10 CN CN2009100871853A patent/CN101644330B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE969838C (en) * | 1952-02-02 | 1958-07-24 | Maybach Motorenbau G M B H | Multi-part internal combustion engine piston |
| EP0410453A1 (en) * | 1989-07-26 | 1991-01-30 | Sanden Corporation | Lubricating mechanism for a piston assembly of a slant plate type compressor |
| CN1839254A (en) * | 2003-08-19 | 2006-09-27 | 玛勒有限公司 | Split piston for an internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101644330A (en) | 2010-02-10 |
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