CN108982112B

CN108982112B - Optical engine

Info

Publication number: CN108982112B
Application number: CN201810856954.0A
Authority: CN
Inventors: 贾毓鼎; 杨沛文; 肖广飞; 李伟轩
Original assignee: NINGBO YINZHOU DELIGHT TECHNOLOGY CO LTD
Current assignee: NINGBO YINZHOU DELIGHT TECHNOLOGY CO LTD
Priority date: 2018-07-31
Filing date: 2018-07-31
Publication date: 2020-02-14
Anticipated expiration: 2038-07-31
Also published as: CN108982112A

Abstract

The invention relates to the technical field of engines, in particular to an optical engine which comprises a cylinder cover assembly (6), a transparent cylinder sleeve (7), a lengthened piston (8) and a cylinder body (3), wherein the cylinder cover assembly (6) is fixed at the upper end of the transparent cylinder sleeve (7), and the cylinder cover assembly (6) is hermetically connected with the transparent cylinder sleeve (7), and the optical engine is characterized in that a flow guide channel (23) for guiding engine oil leaked from the upper end of the lengthened piston (8) into the cylinder body (3) is arranged on the side wall of the lengthened piston (8), and an upper flow guide opening (24) of the flow guide channel (23) is positioned on the lower side of a first piston ring (22). The engine oil leaked out of the upper end of the lengthened piston of the optical engine can be guided into the cylinder body, so that the 45-degree reflecting mirror is prevented from being polluted, and the precision of experimental data is improved.

Description

Optical engine

Technical Field

The invention relates to the technical field of engines, in particular to an optical engine.

Background

The optical engine is mainly used for researching the conditions of airflow movement, spray development, mixed gas formation, combustion process and the like in an engine cylinder. The optical engine generally comprises a cylinder body, a supporting plate, an elongated piston, a transparent cylinder sleeve, a cylinder cover support, a cylinder cover and other parts, wherein the supporting plate is fixed at the upper end of the cylinder body, one end of the transparent cylinder sleeve is tightly connected with the supporting plate, the other end of the transparent cylinder sleeve is hermetically connected with the cylinder cover, the upper end of the elongated piston is slidably connected with the transparent cylinder sleeve, and the lower end of the elongated piston is slidably connected with the cylinder body. The lengthened piston comprises an upper piston piece and a lower piston which are fixedly connected together from top to bottom, the top surface of the upper piston piece is provided with transparent glass as large as possible, the middle section part of the upper piston piece is provided with a yielding port along the axis direction, a 45-degree reflecting mirror is installed in the yielding port, images are shot through the transparent glass arranged at the head part of the piston and the 45-degree reflecting mirror installed at the lower side of the piston, and a shooting device is arranged at the outer end of the transparent cylinder sleeve, so that experimental research is carried out on the formation of a flow field, spraying, burning and mixed gas in the cylinder.

Optical engine in the above-mentioned structure is at the during operation, and generally transparent cylinder liner is only one, that is to say that the structure of single cylinder carries out the operation, like this, at optical engine during operation, because extension piston up-and-down motion time can inertial force, thereby produce vibrations, the experimental data collection that optical engine can be influenced on the one hand to this kind of vibrations effect causes the experimental data precision lower, and on the other hand, transparent cylinder liner is generally made by the great quartz material of fragility, if under the condition that receives vibrations, very easy and foreign matter collision cause the fracture.

In addition, in the optical engine in the prior art, the transparent cylinder sleeve is supported by the screw fixing piece to enable the transparent cylinder sleeve to be abutted against the lower portion of the cylinder cover, however, the screw fixing piece is generally required to be screwed down a plurality of screws during installation, so that the plurality of screws more or less generate the defect of uneven stress of the transparent cylinder sleeve when being screwed down, and the uneven stress is combined with the vibration generated during the operation of the optical engine to easily cause breakage.

Third, the cylinder cap among the optical engine of prior art is direct and cylinder cap pillar screwed connection, and the cylinder cap is including more parts in fact, when dismouting was washd optical engine at every turn, all need to dismantle the cylinder cap after just can install on the cylinder cap pillar, cause the dismouting troublesome.

Fourthly, the upper end of the lengthened piston in the optical engine in the prior art is in sliding connection with the transparent cylinder sleeve, engine oil needs to be arranged between the upper end of the lengthened piston and the transparent cylinder sleeve, the engine oil can leak downwards along the gap between the lengthened piston and the transparent cylinder sleeve due to continuous up-and-down movement between the upper end of the lengthened piston and the transparent cylinder sleeve, the leaked engine oil can drip from the transparent cylinder sleeve under the action of gravity or other forces, and a 45-degree reflective mirror in the middle of the lengthened piston is easy to pollute, so that the acquisition of data is influenced.

Fifthly, the continuous up-and-down motion of the relative cylinder body of lower extreme of the extension piston among the optical engine of prior art, because there is engine oil in the cylinder body, be used for cooling and lubrication, and continuous up-and-down motion can make the engine oil gathering at piston ring lower extreme position between the lower extreme of extension piston and the bottom cylinder liner, if the engine oil gathering is more, will upwards reveal from the clearance between extension piston and the bottom cylinder liner easily, produce the problem that engine oil outwards reveals, it pollutes to make on transparent glass and the 45 reflector easily, influence the acquisition of data, thereby influence test data accuracy, influence optical engine's normal test and experimental work.

Disclosure of Invention

The present invention is directed to solving at least one of the above problems.

The technical problem to be solved by the invention is to provide at least one optical engine, wherein engine oil leaked from the upper end of a lengthened piston of the optical engine can be guided into a cylinder body, so that a 45-degree reflector is prevented from being polluted, and the precision of experimental data is improved.

In order to solve the problems, the optical engine comprises a cylinder cover assembly, a transparent cylinder sleeve, an elongated piston and a cylinder body, wherein the cylinder cover assembly is fixed at the upper end of the transparent cylinder sleeve, the cylinder cover assembly is connected with the transparent cylinder sleeve in a sealing mode, the upper end of the elongated piston is connected with the transparent cylinder sleeve in a sliding mode, the lower end of the elongated piston is connected with the cylinder body in a sliding mode, a first piston ring is arranged on the side wall of the upper end of the elongated piston, a flow guide channel used for guiding engine oil leaked from the upper end of the elongated piston into the cylinder body is arranged on the side wall of the elongated piston, and an upper flow guide opening of the flow guide.

After adopting above-mentioned structure, have at least following advantage: when the optical engine starts to work, if engine oil leaks from the first piston ring, the leaked engine oil can flow into the flow guide channel from the upper flow guide port under the action of gravity or other forces and then is guided into the cylinder body, so that the engine oil can be prevented from dripping from the transparent cylinder sleeve, a 45-degree reflector positioned in the middle of the lengthened piston is prevented from being polluted to influence data acquisition, and the data accuracy of the optical engine is ensured; on the other hand, the engine oil does not drip from the transparent cylinder sleeve, so that the cleanliness of the optical engine can be ensured; moreover, the machine oil can be used in the cylinder body, so that the waste of the machine oil is avoided. That is to say, the method has the advantages of ensuring the data precision and avoiding waste, has beneficial technical effects and has obvious progress.

Preferably, the lateral wall that just is located first piston ring on the lateral wall of extension piston upper end is equipped with first sunken step, first sunken step has the interval with the internal perisporium of transparent cylinder liner, the interval forms the first oil storage annular of storing the machine oil of revealing, go up water conservancy diversion mouth and first oil storage annular intercommunication. After combining above-mentioned structural feature, the engine oil that leaks out can obtain the storage in first oil storage ring groove department, avoids when more revealing appearing, goes up the water conservancy diversion mouth water conservancy diversion not enough and leaks down, can further guarantee that the engine oil that leaks out all flows into the water conservancy diversion passageway from last water conservancy diversion mouth, later is guided into in the cylinder body.

Preferably, a second piston ring is arranged on the side wall of the upper end of the lengthened piston and positioned on the lower side of the first oil storage ring groove. After combining above-mentioned structural feature, the second piston ring can play the possibility of avoiding the interior machine oil of first oil storage annular to continue to leak down to further guarantee that the machine oil that leaks out all follow upper diversion mouth water conservancy diversion and get into the water conservancy diversion passageway, later by leading-in cylinder body.

Preferably, a third piston ring is arranged on the side wall of the lower end of the lengthened piston, a lower guide opening for guiding engine oil at the lower end of the third piston ring into the guide channel is formed in the side wall of the lower end of the lengthened piston, the lower guide opening is located on the lower side of the third piston ring, and the lower guide opening is communicated with the guide channel. When more engine oil gathers in third piston ring lower extreme position, will upwards reveal from third piston ring very easily, after combining above-mentioned structural feature, if when more engine oil gathers in third piston ring lower extreme position, can flow into water conservancy diversion passageway from water conservancy diversion mouth down under the effect of gravity or other power, later is guided into in the cylinder body, can avoid engine oil from revealing and spattering 45 reflector department on the one hand, guarantees optical engine's data accuracy.

Preferably, the lower diversion opening is downwards inclined from outside to inside. After the structural characteristics are combined, the engine oil can more easily flow into the flow guide channel from the lower flow guide opening under the action of gravity or other forces.

Preferably, the upper diversion opening is downwards inclined from outside to inside. After the structural characteristics are combined, the engine oil can more easily flow into the flow guide channel from the upper flow guide opening under the action of gravity or other forces.

Preferably, the lengthened piston comprises an upper piston piece and a bottom piston, and the upper piston piece is fixedly connected with the bottom piston; the water conservancy diversion passageway is equipped with annular oil storage tank on the terminal surface that the bottom piston is up including establishing the first passageway section on the lateral wall of last piston spare and establishing the second passageway section on the lateral wall of bottom piston, first passageway section and annular oil storage tank intercommunication, second passageway section and annular oil storage tank intercommunication. The annular oil storage tank has the function of temporarily storing engine oil, so that the overall dredging capacity of the flow guide channel is further improved; on the other hand, after the lengthened piston is divided into the upper piston piece and the bottom piston, the first channel section does not need to be aligned to the second channel section when the lengthened piston is provided with the annular oil storage tank, so that the assembly is convenient, and the first channel section, the second channel section, the upper diversion port and the lower diversion port can be conveniently processed after the lengthened piston is divided into the upper piston piece and the bottom piston.

Preferably, the upper piston piece comprises an upper piston sleeve body, transparent glass and a gland; the upper end of the upper piston sleeve body is provided with an installation cavity, the transparent glass is located in the installation cavity and provided with a propping step, the gland is in threaded connection with the upper piston sleeve body, the end part of the gland is in propping connection with the propping step, a sealing gasket is arranged between the transparent glass and the bottom of the installation cavity, and the sealing gasket is arranged between the end part of the gland and the propping step. After the structural characteristics are combined, the pressing cover is unscrewed, and then the transparent glass can be conveniently taken out from the installation cavity, so that the transparent glass is convenient to disassemble and assemble when being cleaned.

Drawings

FIG. 1 is a schematic diagram of one embodiment of the present application.

FIG. 2 is a schematic view of the balance box of the present application.

FIG. 3 is a schematic view of a first balance shaft and a second balance shaft of the present application.

FIG. 4 is a schematic view of the present application at the location of the cylinder head assembly.

FIG. 5 is a schematic cross-sectional view of the present application at an extended piston position.

FIG. 6 is another cross-sectional schematic view of the present application at an extended piston position.

Fig. 7 is an enlarged schematic view at a in fig. 6.

Fig. 8 is an enlarged schematic view at B in fig. 6.

Fig. 9 is an enlarged schematic view at C in fig. 6.

Fig. 10 is a schematic view of the bottom piston.

Wherein:

1. a crankcase body; 2. a crankshaft; 3. a cylinder body; 4. a first support plate; 5. a cylinder head pillar; 6. a cylinder head assembly; 7. a transparent cylinder liner; 8. lengthening the piston; 9. a connecting rod; 10. a balance box body; 11. a first balance shaft; 12. a second balance shaft; 13. a belt; 14. an eccentric weight block; 15. a hydraulic cylinder; 16. a hydraulic cylinder supporting block; 17. a second support plate; 18. a positioning ring groove; 19. a single cylinder head; 20. a mounting frame; 21. a mounting flange; 22. a first piston ring; 23. a flow guide channel; 24. an upper diversion port; 25. a second oil storage ring groove; 26. a first oil storage ring groove; 27. a second piston ring; 28. a third piston ring; 29. a lower diversion port; 30. an upper piston member; 31. a bottom piston; 32. a first channel segment; 33. a second channel segment; 34. an annular oil storage tank; 35. an upper piston sleeve body; 36. transparent glass; 37. a gland; 38. a mounting cavity; 39. tightly abutting against the step; 40. a gasket seal.

Detailed Description

The inventive concepts of the present disclosure will be described hereinafter using terms commonly employed by those skilled in the art to convey the substance of their work to others skilled in the art. These inventive concepts may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of their inclusion to those skilled in the art. It should also be noted that these embodiments are not mutually exclusive. A component, step, or element from one embodiment may be assumed to be present or used in another embodiment. The particular embodiments shown and described may be substituted for a wide variety of alternate and/or equivalent implementations without departing from the scope of the embodiments of the present disclosure. This application is intended to cover any adaptations or variations of the embodiments discussed herein. It will be apparent to those skilled in the art that alternative embodiments may be practiced using only some of the described aspects. Specific numbers, materials, and configurations are set forth in the examples for the purpose of illustration, however, alternative examples may be practiced by those skilled in the art without these specific details. In other instances, well-known features may be omitted or simplified in order not to obscure the illustrative embodiments.

Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "provided", "mounted", "connected" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other; the term "fixed" may be a bolted and/or screwed connection and/or a snap and/or a weld, which term is understood by a person skilled in the art as a matter of fact to have a special meaning in the present invention.

1-10, in one embodiment, an optical engine includes

The crankshaft box body 1 is rotationally connected with a crankshaft 2 in the crankshaft box body 1;

the cylinder block 3, the said cylinder block 3 is fixed on crankcase 1;

the first supporting plate 4 is fixed at the upper end of the cylinder body 3;

the cylinder cover pillar 5 is fixed on the first supporting plate 4;

the cylinder cover assembly 6 is fixed on the cylinder cover pillar 5;

the top of the transparent cylinder sleeve 7 is tightly abutted to the cylinder cover assembly 6; the cylinder cover component 6 is fixed at the upper end of the transparent cylinder sleeve 7, the cylinder cover component 6 is connected with the transparent cylinder sleeve 7 in a sealing way,

a support assembly for supporting the transparent cylinder liner 7, the bottom of the transparent cylinder liner 7 being supported by the support assembly;

the upper end of the lengthened piston 8 is connected with the transparent cylinder sleeve 7 in a sliding mode, and the lower end of the lengthened piston 8 is connected with the cylinder body 3 in a sliding mode;

one end of the connecting rod 9 is hinged with the lengthened piston 8, and the other end of the connecting rod 9 is hinged with the crankshaft 2;

also comprises

The crankshaft box body 1 is fixed on the balance box body 10, a first balance shaft 11 and a second balance shaft 12 are rotatably connected in the balance box body 10, the first balance shaft 11, the second balance shaft 12 and the crankshaft 2 are in transmission connection through a belt 13, eccentric balancing weights 14 are respectively arranged on the first balance shaft 11 and the second balance shaft 12, the rotating speeds of the first balance shaft 11, the second balance shaft 12 and the crankshaft 2 are the same, and the rotating directions of the first balance shaft 11 and the second balance shaft 12 are opposite; when the extension piston 8 moves from bottom to top, the eccentric weight blocks 14 on the first balance shaft 11 and the second balance shaft 12 both move from top to bottom, and when the extension piston 8 moves from top to bottom, the eccentric weight blocks 14 on the first balance shaft 11 and the second balance shaft 12 both move from bottom to top.

When the optical engine works, the motion of the lengthened piston 8 drives the crankshaft 2 to move, and the crankshaft 2 drives the first balance shaft 11 and the second balance shaft 12 to move; when the lengthening piston 8 moves from bottom to top, the eccentric weight blocks 14 on the first balance shaft 11 and the second balance shaft 12 both move from top to bottom, so that the inertia force of the lengthening piston 8 moving from bottom to top is balanced by the inertia force of the eccentric weight blocks 14 moving from top to bottom; when extension piston 8 from top to bottom moved, eccentric balancing weight 14 on first balance shaft 11 and the second balance shaft 12 all moves from bottom to top, like this, the inertia force of extension piston 8 from top to bottom motion is balanced by the inertia force of eccentric balancing weight 14 all from bottom to top motion, consequently, when optical engine during operation, the inertia force of extension piston 8 whole motion process all can be balanced, can effectively reduce because the vibrations that the inertia force produced when extending piston 8 moves from top to bottom, have the advantage of operation stability, in addition, because vibrations reduce, can effectively improve optical engine's experimental data precision, establish the basis for the scientific research. Furthermore, the first balance shaft 11 and the second balance shaft 12 are opposite in rotation direction, so that the inertia forces of the eccentric weight block 14 in the horizontal direction can be balanced with each other, no additional vibration is generated, and the optical engine is ensured to operate under a low vibration condition. In addition, the first balance shaft 11 and the second balance shaft 12 are driven by the crankshaft 2, so that the timing characteristic of the first balance shaft 11 and the second balance shaft 12 can be ensured, the structure is simple, the transmission stability can be ensured through the belt and the transmission wheel, and the effect of reducing the vibration of the optical engine can be realized by adopting a simpler structure.

The first balance shaft 11 and the second balance shaft 12 have the same structure, and the eccentric weight 14 on the first balance shaft 11 and the eccentric weight 14 on the second balance shaft 12 have the same structure. This further ensures that the eccentric weight 14 on the first balance shaft 11 and the eccentric weight 14 on the second balance shaft 12 self-balance and balance the inertial force of the extension piston 8 when rotating.

The axis of the extension piston 8 is located in the center of the first balance shaft 11 and the second balance shaft 12. This further ensures that the eccentric weight 14 on the first balance shaft 11 and the eccentric weight 14 on the second balance shaft 12 balance the inertial forces of the extension piston 8 during rotation.

The support component comprises a hydraulic cylinder 15, a hydraulic cylinder support block 16 and a second support plate 17, the hydraulic cylinder support block 16 is fixed on the first support plate 4, the hydraulic cylinder 15 is fixed on the hydraulic cylinder support block 16, the second support plate 17 is fixed at the driving end of the hydraulic cylinder 15, and the bottom of the transparent cylinder sleeve 7 is supported by the support component, namely, the bottom of the transparent cylinder sleeve 7 is supported by the second support plate 17. Like this, changed the structure that adopts the screw mounting to support transparent cylinder liner 7 among the prior art, adopted pneumatic cylinder 15 as bearing, pneumatic cylinder 15 can guarantee the even power that the bottom of transparent cylinder liner 7 was received, has avoided the stress inequality not enough that the screw mounting appears to guarantee to receive vibrations indestructible at optical engine during operation. The hydraulic cylinder 15 is a hollow hydraulic cylinder available in the market, and the hollow position of the hydraulic cylinder can give way to the lengthened piston 8.

And a positioning ring groove 18 for positioning the transparent cylinder sleeve 7 is arranged on the second supporting plate 17, and the bottom of the transparent cylinder sleeve 7 is positioned in the positioning ring groove 18. In this way, the transparent cylinder liner 7 can be easily mounted with the second support plate 17 during assembly.

The cylinder cover assembly 6 comprises a single-cylinder cover 19 and a mounting frame 20, the single-cylinder cover 19 is fixedly connected with the mounting frame 20, a mounting flange 21 is arranged on the mounting frame 20, and the mounting flange 21 is fixedly connected with the cylinder cover pillar 5 through screws. Thus, when the mounting flange 21 and the cylinder cover pillar 5 are directly screwed or loosened, the whole cylinder cover assembly 6 can be mounted and dismounted, and the transparent cylinder sleeve 7 can be conveniently cleaned and dismounted.

The side wall of the upper end of the lengthened piston 8 is provided with a first piston ring 22, the side wall of the lengthened piston 8 is provided with a flow guide channel 23 for guiding engine oil leaked from the upper end of the lengthened piston 8 into the cylinder body 3, and an upper flow guide opening 24 of the flow guide channel 23 is positioned on the lower side of the first piston ring 22.

When the optical engine starts to work, if engine oil leaks from the first piston ring 22, the leaked engine oil can flow into the flow guide channel 23 from the upper flow guide port 24 under the action of gravity or other forces and then is guided into the cylinder body 3, so that the engine oil can be prevented from dripping from the transparent cylinder sleeve 7 on one hand, a 45-degree reflector positioned in the middle of the lengthened piston 8 is prevented from being polluted, and hard data can be obtained, and the data accuracy of the optical engine is ensured; on the other hand, the engine oil does not drip from the transparent cylinder sleeve 7, so that the cleanliness of the optical engine can be ensured; in addition, the engine oil can be used by being guided into the cylinder 3, thereby avoiding the waste of the engine oil. That is to say, the method has the advantages of ensuring the data precision and avoiding waste, has beneficial technical effects and has obvious progress.

The lateral wall that just is located first piston ring 22 on the lateral wall of extension piston 8 upper end is equipped with first oil storage annular 26, go up water conservancy diversion mouth 24 and first oil storage annular 26 intercommunication. After the structural characteristics are combined, the leaked engine oil can be stored in the first oil storage ring groove 26, so that the situation that the leaked engine oil leaks downwards due to insufficient diversion of the upper diversion port 24 when more leakage occurs is avoided, and the leaked engine oil can be further ensured to be guided into the diversion channel 23 from the upper diversion port 24 and then guided into the cylinder 3.

A second piston ring 27 is arranged on the side wall of the upper end of the lengthened piston 8 and positioned at the lower side of the first oil storage ring groove 26. After the above structural features are combined, the second piston ring 27 can prevent the engine oil in the first oil storage ring groove 26 from continuously leaking downward, so as to further ensure that the leaked engine oil is guided into the guide channel 23 from the upper guide opening 24 and then guided into the cylinder 3.

The side wall of the lower end of the lengthened piston 8 is provided with a third piston ring 28, the side wall of the lower end of the lengthened piston 8 is provided with a lower guide opening 29 for guiding engine oil at the lower end of the third piston ring 28 into the guide channel 23, the lower guide opening 29 is positioned at the lower side of the third piston ring 28, and the lower guide opening 29 is communicated with the guide channel 23. When more engine oil is gathered at the lower end position of the third piston ring 28, the engine oil can easily leak upwards from the third piston ring 28, and after the structural characteristics are combined, if more engine oil is gathered at the lower end position of the third piston ring 28, the engine oil can flow into the diversion channel 23 from the lower diversion port 29 under the action of gravity or other forces and then is guided into the cylinder body 3, so that the engine oil can be prevented from splashing to the 45-degree reflector from the leakage, and the data accuracy of the optical engine can be ensured.

And a second oil storage ring groove 25 is formed in the side wall of the lower end of the lengthened piston 8 and positioned on the lower side of a third piston ring 28, and the lower diversion port 29 is communicated with the second oil storage ring groove 25. Thus, the second oil storage ring groove 25 can temporarily store the engine oil, and facilitate the engine oil to flow into the guide passage 23 from the lower guide port 29 and then be introduced into the cylinder block 3.

The lower diversion opening 29 is cut obliquely downwards from outside to inside. By combining this feature, the engine oil can flow into the diversion passage 23 from the lower diversion port 29 more easily by gravity or other force.

The upper diversion opening 24 is downwards inclined from outside to inside. By combining this feature, the engine oil can flow into the diversion channel 23 from the upper diversion port 24 more easily under the action of gravity or other forces.

The lengthened piston 8 comprises an upper piston piece 30 and a bottom piston 31, and the upper piston piece 30 is fixedly connected with the bottom piston 31; the flow guide channel 23 comprises a first channel section 32 arranged on the side wall of the upper piston piece 30 and a second channel section 33 arranged on the side wall of the bottom piston 31, an annular oil storage groove 34 is formed in the upward end face of the bottom piston 31, the first channel section 32 is communicated with the annular oil storage groove 34, and the second channel section 33 is communicated with the annular oil storage groove 34. The annular oil storage groove 34 is used for temporarily storing engine oil, so that the overall dredging capacity of the flow guide channel 23 is further improved; on the other hand, the extension piston 8 is divided into the upper piston member 30 and the bottom piston 31, so that the annular oil storage groove 34 is provided, the first passage section 32 is not required to be aligned with the second passage section 33 during assembly, thereby facilitating assembly, and the first passage section 32, the second passage section 33, the upper diversion port 24 and the lower diversion port 29 are also conveniently machined after the extension piston 8 is divided into the upper piston member 30 and the bottom piston 31. The third piston ring 28 and the lower pilot port 29 are provided at the lower end of the upper piston member 30.

The number of flow channels 23, first channel segments 32, second channel segments 33, upper flow guides 24 and lower flow guides 29 may be one or more, for example 2, 3, 4.

The upper piston part 30 comprises an upper piston sleeve body 35, transparent glass 36 and a gland 37; the upper end of the upper piston sleeve 35 is provided with an installation cavity 38, the transparent glass 36 is located in the installation cavity 38, the transparent glass 36 is provided with a pressing step 39, the gland 37 is in threaded connection with the upper piston sleeve 35, the end of the gland 37 is in pressing connection with the pressing step 39, a sealing gasket 40 is arranged between the bottom of the transparent glass 36 and the bottom of the installation cavity 38, and a sealing gasket 40 is arranged between the end of the gland 37 and the pressing step 39. A receiving chamber for mounting a 45 deg. mirror is also provided on the upper piston member 30. After combining these structural features, the pressing cover 37 is unscrewed, and then the transparent glass 36 can be conveniently taken out from the installation cavity 38, so that the transparent glass 36 can be conveniently disassembled and assembled when being cleaned.

The balance structure in the balance box body 10 can be first-order balance, second-order balance or single-shaft balance, and the balance shaft number can be single-shaft or multi-shaft to realize balance effect, so that the balance structure is also in a protection range.

The above description is only a preferred embodiment of the present invention, and it should not be understood that the scope of the present invention is limited thereby, and it should be understood by those skilled in the art that various other modifications and equivalent arrangements can be made by applying the technical solutions and concepts of the present invention within the scope of the present invention as defined in the appended claims.

Claims

1. The optical engine comprises a cylinder cover assembly (6), a transparent cylinder sleeve (7), a lengthened piston (8) and a cylinder body (3), wherein the cylinder cover assembly (6) is fixed at the upper end of the transparent cylinder sleeve (7), the cylinder cover assembly (6) is in sealing connection with the transparent cylinder sleeve (7), the upper end of the lengthened piston (8) is in sliding connection with the transparent cylinder sleeve (7), the lower end of the lengthened piston (8) is in sliding connection with the cylinder body (3), a first piston ring (22) is arranged on the side wall of the upper end of the lengthened piston (8), the optical engine is characterized in that a flow guide channel (23) used for guiding engine oil leaked from the upper end of the lengthened piston (8) into the cylinder body (3) is arranged on the side wall of the lengthened piston (8), an upper flow guide opening (24) of the flow guide channel (23) is positioned at the lower side of the first piston ring (22), the lengthened piston (8) comprises an upper piston piece (, the upper piston piece (30) is fixedly connected with the bottom piston (31); flow guide channel (23) are including establishing first passageway section (32) on the lateral wall of last piston spare (30) and establishing second passageway section (33) on the lateral wall of bottom piston (31), be equipped with annular oil storage tank (34) on bottom piston (31) up's the terminal surface, first passageway section (32) and annular oil storage tank (34) intercommunication, second passageway section (33) and annular oil storage tank (34) intercommunication.

2. Optical engine according to claim 1, characterized in that the side wall of the upper end of the elongated piston (8) on the underside of the first piston ring (22) is provided with a first oil storage ring groove (26), and that the upper flow guide opening (24) communicates with the first oil storage ring groove (26).

3. Optical engine according to claim 2, characterized in that the side wall of the upper end of the extended piston (8) below the first oil reservoir ring groove (26) is provided with a second piston ring (27).

4. The optical engine according to claim 1, characterized in that the side wall of the lower end of the extension piston (8) is provided with a third piston ring (28), the side wall of the lower end of the extension piston (8) is provided with a lower guide opening (29) for guiding the engine oil at the lower end of the third piston ring (28) into the guide channel (23), the lower guide opening (29) is positioned at the lower side of the third piston ring (28), and the lower guide opening (29) is communicated with the guide channel (23).

5. Optical engine according to claim 4, characterized in that the side wall of the lower end of the elongated piston (8) and below the third piston ring (28) is provided with a second oil storage ring groove (25), and the lower flow guide opening (29) communicates with the second oil storage ring groove (25).

6. Optical engine according to claim 4, characterized in that the lower deflector port (29) is downwardly chamfered from outside to inside.

7. Optical engine according to claim 1, characterized in that the upper deflector port (24) is downwardly bevelled from outside to inside.

8. The optical engine of claim 1, wherein the upper piston member (30) comprises an upper piston housing (35), a transparent glass (36), and a gland (37); the upper end of the upper piston sleeve body (35) is provided with an installation cavity (38), the transparent glass (36) is located in the installation cavity (38), the transparent glass (36) is provided with a pressing step (39), the pressing cover (37) is in threaded connection with the upper piston sleeve body (35), the end part of the pressing cover (37) is in pressing connection with the pressing step (39), a sealing gasket (40) is arranged between the bottom parts of the transparent glass (36) and the installation cavity (38), and a sealing gasket (40) is arranged between the end part of the pressing cover (37) and the pressing step (39).