CN204127095U - A kind of piston rod - Google Patents
A kind of piston rod Download PDFInfo
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- CN204127095U CN204127095U CN201420450378.7U CN201420450378U CN204127095U CN 204127095 U CN204127095 U CN 204127095U CN 201420450378 U CN201420450378 U CN 201420450378U CN 204127095 U CN204127095 U CN 204127095U
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- pin
- piston
- connecting rod
- small end
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Abstract
The utility model relates to engine component design field, is specially a kind of piston rod.A kind of piston rod of the utility model, comprise connecting rod small end (1), connnecting rod big end and shaft, connecting rod small end (1) is double-pin stand structure, and double-pin stand structure is provided with and carries out pin-and-hole (2) required when pin is connected with the key seat of the piston head with single pin structure.The double-pin seat connecting rod small end that the utility model adopts provides structural support for adopting the piston of single pin structure; The utility model, by changing the Connecting format of piston and connecting rod small end, makes piston connecting rod unit assembly structure more compact, stressed concentrated.The double-pin seat connecting rod small end that the utility model adopts improves the exercise load of connecting rod from structure, the lasting cooling and lubricating being set to wrist pin of connecting rod small end oil collecting hole and shoe cream room provides technical support.The utility model is provided with lining at connecting rod small end pin-and-hole place, and the basis ensureing cooling and lubrication provides further protection to the wear resistance of the pin-and-hole at piston microcephaly place.
Description
Technical field
The utility model relates to engine component design field, is specially a kind of piston rod.
Background technique
Piston, connecting rod, as the key components and parts of connecting rod, bear the pressure of explosion produced in cylinder, and pressure of explosion are delivered to bent axle, promote crankshaft rotating acting, are the critical pieces that the allomeric function of internal-combustion engine realizes.Piston connecting rod unit assembly structure of the prior art, wrist pin is arranged in the axis hole of connecting rod small end, and wrist pin is connected with connecting rod is T-shaped, a strong point; Wrist pin is arranged on two of piston symmetrical key seats, has two strong points; The pressure of explosion of internal-combustion engine is delivered on wrist pin by piston, and wrist pin power transmission, to connecting rod, promotes crankshaft rotating.Perfect along with national industrial policies and environmental regulation, automobile and engine exhaust upgrading up to standard, the internal-combustion engines such as automobile, engineering machinery, boats and ships are all to high power, high detonation pressure, large heat load, comparatively quantize future development, the technology of combustion motor and Economy propose higher technical requirements, improve internal-combustion engine pressure of explosion, the intensity of piston connecting rod unit and piston, connecting rod, wrist pin must be strengthened, improve the hot strength of piston.Steel metal is adopted to manufacture the main selection that integral type or fraction forged steel or cast-iron piston become industry in this context, but steel pistons hair goes bad shaping and processing technique difficulty is large, manufacturing cost is higher, the weight of piston self increases more, higher technical requirements is proposed to connecting rod and other component of internal-combustion engine, improve the Technical Economy of piston connecting rod unit, to realizing internal-combustion engine high power, high detonation pressure, large heat load, comparatively quantizing there is very important effect.
Shown in Fig. 1 ~ 3, the Placement of steel pistons link assembly in prior art, no matter be adopt steel metal to manufacture one-piece piston or Split piston, piston must adopt double-pin stand structure (hinge piston four pin structure), this technological scheme makes piston when the performance parameter meeting motor requires, the weight of piston increases more, and particularly the technology capability of oil duct in piston is poor, manufacture difficulty is large, causes steel pistons cost of production high.Heavier piston weight, the inertial force that piston produces significantly improves (data display diesel engine is 300-600 times), increases the mechanical load of engine crankshaft, adds failure risk.While reinforcing stimulus compages intensity, too increase the comprehensive manufacture cost of motor.
In prior art, hinge piston in use, key seat temperature drift, insufficient lubrication, and wrist pin the locking even technological deficiency of piston failure easily occur objective reality.To the evaluation of the beneficial effect of hinge piston in prior art, exist and do not well known to a person skilled in the art cognitive Bias, those skilled in the art do not recognize, adopt hinge piston to remain in such technical problem and the immediate cause that causes this problem to occur; This technology prejudice causes putting into production so far at hinge piston from the eighties in last century, and the speed of marketing and application is all too slow.
Model utility content
(1) technical problem that will solve
The piston that the double-pin seat connecting rod small end that the utility model adopts is the piston head adopting single pin structure provides structural support; The utility model provides a kind of new internal combustion engine connecting rod assembly structure, by changing the Connecting format of piston and connecting rod small end, makes the assembly structure of piston connecting rod unit more compact, stressed concentrated; Overcome technology cognitive Bias, solve the technological deficiency that wrist pin locking easily occurs in prior art.
(2) technological scheme
In order to solve the problems of the technologies described above, the utility model provides a kind of piston rod, comprise connecting rod small end, connnecting rod big end and shaft, it is characterized in that, described connecting rod small end is double-pin stand structure, and described double-pin stand structure is provided with and carries out pin-and-hole required when pin is connected with the key seat of the piston crown with single pin structure; In described double-pin stand structure, the dead slot in the middle of two key seats is provided with collection chamber near described shaft one end.
Preferably, described collection chamber is by the bottom of arcuation chamber and in double-pin stand structure, and the sidewall inside two key seats surrounds.
Preferably, each key seat in described double-pin stand structure is provided with oil collecting hole.
Preferably, lining is provided with in the pin-and-hole of each key seat in described double-pin stand structure.
(3) beneficial effect
The double-pin seat connecting rod small end that the utility model adopts provides structural support from structure for adopting the piston of single pin structure piston crown;
The double-pin seat connecting rod small end that the utility model adopts improves the exercise load of connecting rod from structure;
In the utility model, the lasting cooling and lubricating being set to wrist pin of connecting rod small end collection chamber provides technical support, in piston rod movement process, the Lubricants collected in collection chamber can adopt the position of pin joint for continuing Cooling and Lubricator for piston, solve the technical problem of the easy locking of wrist pin, overcome during hinge piston uses the technological deficiency that wrist pin locking easily occurs;
In the utility model, the lubrication be set between connecting rod small end pin and pin-and-hole of connecting rod small end oil collecting hole provides structural support;
The utility model is provided with lining at connecting rod small end pin-and-hole place, on the basis ensureing cooling and lubrication, extends the working life of connecting rod small end;
The transformation of piston and connecting rod Connecting format, realizes the designs simplification of piston, alleviates piston weight, improves the exercise load of piston connecting rod unit.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the axonometric drawing schematic diagram at piston rod microcephaly position in prior art;
Fig. 2 is piston rod microcephaly position pin-and-hole and pin erection drawing schematic diagram in prior art;
Fig. 3 be in prior art connecting rod be connected with steel pistons pin after sectional view;
Fig. 4 is the structure of small end of connecting rod sectional view according to a kind of piston rod of the utility model embodiment;
Fig. 5 is the connecting rod small end plan view according to a kind of piston rod of the utility model embodiment;
Fig. 6 is the partial sectional view after adopting three key seat hinge wrist pins of single pin structure to be connected according to the connecting rod small end of a kind of piston rod of the utility model embodiment with piston head;
Fig. 7 is to sectional view according to the connecting rod small end A in embodiment Fig. 4 of the present utility model.
Embodiment
Below in conjunction with Figure of description and embodiment, embodiment of the present utility model is described in further detail.Following examples only for illustration of the utility model, but can not be used for limiting scope of the present utility model.
Shown in Fig. 4 ~ 5, the utility model provides a kind of piston rod, comprise connecting rod small end 1, connnecting rod big end and shaft, described connecting rod small end 1 is double-pin stand structure, and described double-pin stand structure is provided with and carries out pin-and-hole 2 required when pin is connected with the key seat of the piston crown with single pin structure; In described double-pin stand structure, the dead slot in the middle of two key seats is provided with collection chamber 5 near described shaft one end.
Preferably, described collection chamber is by the bottom of arcuation chamber and in double-pin stand structure, and the sidewall inside two key seats surrounds.
Preferably, each key seat in described double-pin stand structure is provided with oil collecting hole 3.
Preferably, be provided with lining 4 in the pin-and-hole of each key seat in described double-pin stand structure, concrete structure as shown in Figure 6.
The utility model inherits conventional construction piston connecting rod unit: the connection basic principle of piston, connecting rod, wrist pin and function, maintains the technical feature of the aspect maturations such as guiding, pressure-bearing, power transmission, lubrication, cooling.The piston that the present embodiment is selected is three key seat hinge pistons, and piston comprises piston crown and piston skirt, is provided with butterfly spring between piston crown and skirt section, is linked into an integrated entity by wrist pin.There are two symmetrical flange-type key seats piston skirt, and piston crown inner chamber has a mid-key seat of axle bed formula; Mid-key seat is arranged on piston cavity central position, and key seat axis is vertical with piston centreline, and mid-key seat outside dimensions meets the assembly space of connecting rod small end; Skirt section flange-type key seat has skirt section pin-and-hole and annular groove.
First lining is installed to during assembling in the pin-and-hole of connecting rod small end 1, again mid-for piston crown key seat is put into connecting rod small end double-pin stand structure, the center of the mid-pin-and-hole of adjustment piston crown mid-key seat, the skirt section pin-and-hole of piston skirt key seat and the connecting rod pin-and-hole 2 of connecting rod small end, and the center keeping above-mentioned pin-and-hole is on an axis; From skirt section, side, piston skirt pin-and-hole, wrist pin is pushed, successively through connecting rod small end side connecting rod pin-and-hole 2, the mid-pin-and-hole of piston, connecting rod small end opposite side connecting rod pin-and-hole 2 and opposite side skirt section, skirt section pin-and-hole, two snap rings are installed in the annular groove of pin-and-hole both sides, skirt section, the axial float of limited piston pin, completes the assembly connection of piston, wrist pin, connecting rod small end.
A kind of piston rod of the utility model, as shown in Figure 4, Figure 5, structure obtains creationary change to connecting rod small end, and structure shape is the design of double-pin seat, has and hold the pivotal cavity of the mid-key seat of piston in the middle of the double-pin seat of symmetry; At the top of two key seats of double-pin stand structure processing oil collecting hole 3, the structure sectional view after a kind of piston rod of the utility model is connected with three key seat hinge pistons of the single key seat piston crown of employing as shown in Figure 6.
Shown in Fig. 4 and Fig. 7, a kind of piston rod of the utility model, there is the pivotal cavity of the accommodation mid-key seat of piston in the middle of the double-pin seat of symmetry and have collection chamber 5 near shaft one end processing sets up, principle and the oil collecting hole of its collection lubricant oil are similar, in link motion process, the lubricant oil that collection chamber 5 is collected can realize cooling fully and lubrication to piston shaft and key seat, overcomes the technological deficiency that wrist pin locking easily occurs hinge piston.
Above mode of execution only for illustration of the utility model, but not to restriction of the present utility model.Although be described in detail the utility model with reference to embodiment, those of ordinary skill in the art is to be understood that, various combination, amendment or equivalent replacement are carried out to the technical solution of the utility model, do not depart from the spirit and scope of technical solutions of the utility model, all should be encompassed in the middle of right of the present utility model.
Claims (5)
1. a piston rod, comprise connecting rod small end (1), connnecting rod big end and shaft, it is characterized in that, described connecting rod small end (1) is double-pin stand structure, and described double-pin stand structure is provided with and carries out pin-and-hole (2) required when pin is connected with the key seat of the piston crown with single pin structure; In described double-pin stand structure, the dead slot in the middle of two key seats is provided with collection chamber (5) near described shaft one end.
2. a kind of piston rod according to claim 1, is characterized in that, described collection chamber (5) is by the bottom of arcuation chamber and in double-pin stand structure, and the sidewall inside two key seats surrounds.
3. a kind of piston rod according to claim 1 and 2, is characterized in that, each key seat in described double-pin stand structure is provided with oil collecting hole (3).
4. a kind of piston rod according to claim 1 and 2, is characterized in that, is provided with lining (4) in the pin-and-hole of each key seat in described double-pin stand structure.
5. a kind of piston rod according to claim 3, is characterized in that, is provided with lining (4) in the pin-and-hole of each key seat in described double-pin stand structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420450378.7U CN204127095U (en) | 2014-08-11 | 2014-08-11 | A kind of piston rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420450378.7U CN204127095U (en) | 2014-08-11 | 2014-08-11 | A kind of piston rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204127095U true CN204127095U (en) | 2015-01-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420450378.7U Active CN204127095U (en) | 2014-08-11 | 2014-08-11 | A kind of piston rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204127095U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104165179A (en) * | 2014-08-11 | 2014-11-26 | 强道前 | Piston connecting rod |
-
2014
- 2014-08-11 CN CN201420450378.7U patent/CN204127095U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104165179A (en) * | 2014-08-11 | 2014-11-26 | 强道前 | Piston connecting rod |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |