CN209742990U - Four-stroke engine capable of being turned over randomly - Google Patents
Four-stroke engine capable of being turned over randomly Download PDFInfo
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- CN209742990U CN209742990U CN201920446640.3U CN201920446640U CN209742990U CN 209742990 U CN209742990 U CN 209742990U CN 201920446640 U CN201920446640 U CN 201920446640U CN 209742990 U CN209742990 U CN 209742990U
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- air inlet
- stroke engine
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- 238000009434 installation Methods 0.000 claims abstract description 4
- 230000001360 synchronised effect Effects 0.000 claims description 35
- 238000007789 sealing Methods 0.000 claims description 9
- 238000003860 storage Methods 0.000 claims description 7
- 238000005461 lubrication Methods 0.000 claims description 5
- 239000011148 porous material Substances 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000002441 reversible effect Effects 0.000 claims 7
- 238000004804 winding Methods 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 4
- 230000007847 structural defect Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 35
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- 230000001050 lubricating effect Effects 0.000 description 6
- 239000010687 lubricating oil Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
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- 230000000694 effects Effects 0.000 description 2
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000010705 motor oil Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005267 amalgamation Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
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- 239000003595 mist Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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- Lubrication Of Internal Combustion Engines (AREA)
Abstract
the utility model belongs to the technical field of engines, in particular to a four-stroke engine capable of being overturned at will, which comprises a cylinder body, wherein the cylinder body comprises a combustion chamber, an inlet valve and an exhaust valve, air inlet channel and exhaust passage, install bent axle connecting rod piston group in the combustion chamber, demountable installation has the cylinder head lid on the cylinder body, cylinder body lower cover and cylinder body side cap, form the cylinder head room between cylinder body and the cylinder head lid, the cam is located the cylinder head indoor, still be equipped with the same air inlet rocker arm subassembly of structure and exhaust rocker arm subassembly in the cylinder head room, air inlet rocker arm subassembly and exhaust rocker arm subassembly all include transmission rocking arm and compression rocking arm, the cam is hugged closely to the transmission rocking arm of air inlet rocker arm subassembly and exhaust rocker arm subassembly, and be located the cam both sides respectively, air inlet valve and exhaust valve are connected respectively to the compression rocking arm of air inlet rocker arm subassembly and exhaust rocker arm subassembly, transmission rocking arm and the mutual. The purpose is as follows: the four-stroke engine solves the problems of heavy weight and difficult maintenance caused by the structural defects of the existing four-stroke engine.
Description
Technical Field
The utility model belongs to the technical field of the engine, concretely relates to four-stroke engine that can overturn wantonly.
background
four-stroke engines belong to reciprocating piston internal combustion engines and are classified into gasoline engines, diesel engines and gas fuel engines according to the type of fuel used. Piston internal combustion engines fueled by gasoline or diesel are referred to as gasoline engines or diesel engines, respectively. Piston internal combustion engines that use natural gas, liquefied petroleum gas, and other gaseous fuels are referred to as gaseous fuel engines.
The four-stroke engine completes one work cycle through four strokes of air intake, compression, work and exhaust, and in the process, the piston reciprocates up and down for four strokes and the corresponding crankshaft rotates for two cycles. The four-stroke engine is a main power machine in garden machinery.
conventional four-stroke engines typically have separate gasoline and engine oil tanks, with the gasoline tank being responsible for supplying fuel and the engine oil tank being responsible for supplying lubricating oil.
The oil tank of the four-stroke engine is of a single structure, so that the whole engine is large in size and heavy in weight. Meanwhile, an independent lubricating mechanism is required to be arranged on the four-stroke engine, and the lubricating mechanism is often large in part number and quite complex, and has the problems of difficulty in maintenance, high manufacturing cost and the like.
SUMMERY OF THE UTILITY MODEL
The utility model aims at: the four-stroke engine capable of being turned over at will is used for solving the problems of heavy weight and difficulty in maintenance caused by structural defects of the existing four-stroke engine.
In order to realize the technical purpose, the utility model discloses a technical scheme as follows:
the utility model provides a four-stroke engine that can overturn wantonly, includes the cylinder body, the cylinder body includes combustion chamber, (air) intake valve, exhaust valve, inlet channel and exhaust passage, install crankshaft connecting rod piston group in the combustion chamber, demountable installation has cylinder head lid, cylinder body lower cover and cylinder body side cap on the cylinder body, form the cylinder head room between cylinder body and the cylinder head lid, be equipped with the lubrication passage hole between inlet channel and the cylinder head room, form the crankcase room between cylinder body and the cylinder body lower cover, form the hold-in range passageway between cylinder body and the cylinder body side cap, be equipped with the intercommunicating pore between crankcase room and the hold-in range passageway, install filter equipment in the intercommunicating pore, be equipped with the band pulley room between cylinder head room and the hold-in range passageway, cylinder head room and hold-in range passageway all communicate with the band pulley room, crankshaft connecting rod piston group includes first synchronizing gear, the indoor second synchronizing gear that installs of band pulley, around being equipped with the hold-in range on first synchronizing gear and the second synchronizing gear, the hold-in range is located the hold-in range passageway, integrated into one piece has the cam on the second synchronizing gear, the cam is located the cylinder head is indoor, the indoor rocking arm subassembly and the exhaust rocking arm subassembly that admits air that still is equipped with the structure the same of cylinder head, admit air rocking arm subassembly and exhaust rocking arm subassembly include a transmission rocking arm and a compression rocking arm respectively, the cam both sides are hugged closely respectively to the transmission rocking arm of the rocking arm subassembly that admits air and the transmission rocking arm of exhaust rocking arm subassembly, the intake valve is connected respectively to the compression rocking arm of the rocking arm subassembly compression rocking arm that admits air and exhaust rocking arm subassembly, corresponds transmission rocking arm.
further limiting, rocker arms are respectively arranged on the air inlet rocker arm assembly and the exhaust rocker arm assembly in a penetrating mode, and the air inlet rocker arm assembly and the exhaust rocker arm assembly are in clearance fit with the corresponding rocker arms. Due to the structural design, the air inlet rocker arm assembly and the air exhaust rocker arm assembly are sleeved on the rocker shaft in a sliding mode, the installation is convenient, the air inlet rocker arm assembly and the air exhaust rocker arm assembly are in clearance fit with each other, and the rotating freedom degree is sufficient.
Further inject, two semi-circular grooves are radially arranged on the inner side surfaces of the transmission rocker arm and the compression rocker arm, the semi-circular grooves on the transmission rocker arm and the corresponding semi-circular grooves on the compression rocker arm are spliced to form oil filling holes, and overflow grooves are axially arranged on the inner walls of the transmission rocker arm and the compression rocker arm. Due to the structural design, the mixed gas enters the overflow groove from the oil injection hole and rotates along with the air inlet rocker arm assembly and the air outlet rocker arm assembly, so that the lubricating oil in the mixed gas can lubricate the contact surfaces of the whole air inlet rocker arm assembly, the air outlet rocker arm assembly and the rocker arm shaft, the redundant mixed gas flows out of the overflow groove, the structure is simple, and the manufacturing cost is reduced.
Further inject, the equal axial of transmission rocking arm and compression rocking arm medial surface has seted up the shoulder hole, two the shoulder hole amalgamation forms the fuel storage room. Due to the structural design, the mixed gas enters the oil storage chamber from the oil injection hole and is stored in the oil storage chamber, and the redundant mixed gas is discharged from the overflow groove to form the circulation of the mixed gas.
further limiting, a rocker arm mounting table is integrally formed in the cylinder head chamber of the cylinder body, a mounting hole matched with a rocker arm shaft is formed in the rocker arm mounting table, and the rocker arm shaft is in interference fit with the mounting hole. Due to the structural design, the rocker arm shaft is in interference fit with the mounting hole, so that the rocker arm shaft can be fixedly mounted on the cylinder body, the structure is simple, and the disassembly is convenient.
Further limiting, a carburetor is installed on the corresponding position of the air inlet channel of the cylinder body, the carburetor is a diaphragm type carburetor and comprises an oil inlet pipe and a diaphragm, a check valve is installed on the oil inlet pipe, an oil inlet cavity is formed between the oil inlet pipe and the diaphragm, a negative pressure pipe is installed between the carburetor and the cylinder body, and the oil inlet cavity of the carburetor is communicated with a crankcase chamber of the cylinder body through the negative pressure pipe. By means of the structural design, when the piston moves downwards, the space in the crankcase chamber is sharply reduced to form positive pressure, the pressure in the oil inlet cavity can be increased through the communication effect of the negative pressure pipe, the diaphragm is pushed open, the carburetor starts to work, oil is atomized and enters the air inlet channel, namely the work of the carburetor is controlled through the air pressure change of the crankcase chamber, the synchronization rate between the crankshaft connecting rod piston group and the carburetor is improved, and the synchronization rate between the intake valve, the exhaust valve and the carburetor is further improved.
further inject, the cylinder block has a plurality of erection columns in the indoor integrated into one piece of cylinder head, threaded blind hole has been seted up on the erection column, cylinder head lid inside wall corresponds position integrated into one piece in the erection column and has the projection, the via hole has been seted up on the projection, wear to be equipped with fixing bolt in the via hole, the projection is close to erection column one end terminal surface and has seted up the annular groove, the inside callipers of annular groove is equipped with first sealing washer, install the second sealing washer between cylinder head lid and the cylinder block. Due to the structural design, the cylinder head cover is connected with the cylinder body through the fixing bolt, so that the structure is simple and the disassembly is convenient; meanwhile, the mounting column and the convex column are matched with the first sealing ring for use, so that the mixed gas in the cylinder head chamber can be prevented from leaking from the through hole.
Further inject, still install first check valve in the communicating hole, be equipped with the back flow between cylinder head room and the crankcase room, install the second check valve in the back flow. Due to the structural design, the mixed gas enters the crankcase chamber through the cylinder head chamber, the pulley chamber, the synchronous belt channel and the communication hole, returns to the cylinder head chamber from the return pipe, and avoids errors in the flowing direction through the first one-way valve and the second one-way valve.
Adopt above-mentioned technical scheme's utility model, have following advantage:
1. the mixed oil is mixed with air in a carburetor and atomized to form mixed gas, the mixed gas is sucked into a cylinder head chamber, a pulley chamber, a synchronous belt channel and a crankcase chamber by taking the change of air pressure in the crankcase chamber as power, and all parts in the cylinder head chamber, the pulley chamber, the synchronous belt channel and the crankcase chamber are lubricated without additionally designing an oil pump to circulate lubricating oil in the engine, so that the overall weight of the engine is reduced, and meanwhile, the number of parts of a lubricating mechanism is reduced, and the maintenance is convenient;
2. the crankshaft connecting rod piston group is in power connection with the cam through the synchronous belt, and compared with the method that power transmission is carried out between a crankshaft and the piston group through a push rod, noise generated when an engine runs can be reduced;
3. The cylinder head cover is fixedly connected with the cylinder body through the fixing bolt, so that the cylinder head is convenient to disassemble and maintain;
4. The cylinder head cover, the side cover and the cylinder body lower cover are independently arranged, when the synchronous belt in the synchronous belt channel is replaced, only the cylinder head cover and the side cover need to be detached, the cylinder body lower cover does not need to be detached, and the cylinder body lower cover is convenient to detach and install;
5. The transmission rocker arm and the compression rocker arm are clamped with each other and are in intermittent fit with the rocker arm shaft, the structure is simple, the disassembly and the assembly are convenient, and meanwhile, the transmission rocker arm and the compression rocker arm are ensured to have enough free ends;
6. Before a part of mixed gas enters a combustion chamber, circulating in a cylinder head chamber, a pulley chamber, a synchronous belt channel and a crankcase chamber, lubricating each part in the cylinder head chamber, cooling each part simultaneously, avoiding influence on use of each part due to overhigh temperature, preheating the mixed gas, improving the temperature of the mixed gas entering the combustion chamber, and enabling the mixed gas to be combusted more fully in the combustion chamber;
7. The utility model discloses use the mist to lubricate each part of engine, for the engine that uses liquid lubrication oil, this engine is when using, can rotate wantonly (0 ~ 360 degree).
drawings
the present invention can be further illustrated by the non-limiting examples given in the accompanying drawings;
FIG. 1 is a schematic diagram of an exploded structure of a part of an embodiment of a four-stroke engine capable of being turned over arbitrarily according to the present invention;
FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;
FIG. 3 is an enlarged view of the structure at B in FIG. 2;
FIG. 4 is an enlarged view of the structure at C in FIG. 2;
Fig. 5 is a schematic structural diagram of an embodiment of the four-stroke engine of the present invention, which can be turned over arbitrarily;
Fig. 6 is a schematic structural diagram of an embodiment of a four-stroke engine capable of being turned over arbitrarily according to the present invention;
Fig. 7 is a first schematic structural diagram of a part of the components in an embodiment of the four-stroke engine of the present invention, which can be arbitrarily overturned;
fig. 8 is a schematic structural diagram three of an embodiment of the four-stroke engine of the present invention, which can be turned over arbitrarily;
Fig. 9 is a fourth schematic structural diagram of an embodiment of the four-stroke engine of the present invention, which can be turned over arbitrarily;
FIG. 10 is a schematic structural diagram of a part of an embodiment of a four-stroke engine of the present invention, which can be turned over arbitrarily;
FIG. 11 is an enlarged view of the structure of FIG. 10 at D;
the main element symbols are as follows:
The cylinder block 1, the second sealing ring 10, the combustion chamber 11, the intake valve 12, the exhaust valve 13, the intake passage 14, the exhaust passage 15, the crankshaft connecting rod piston group 110, the first synchronizing gear 111, the second synchronizing gear 112, the cam 1120, the transmission rocker arm 1121, the oil injection hole 11210, the stepped hole 11213, the semicircular groove 11214, the overflow groove 11216, the compression rocker arm 1122, the rocker arm shaft 1123, the rocker arm mounting table 11230, the synchronous belt 113, the cylinder head cover 2, the pulley chamber 20, the cylinder head chamber 21, the lubricating passage hole 22, the cylinder lower cover 3, the crankcase chamber 31, the cylinder side cover 4, the synchronous belt passage 41, the carburetor 5, the negative pressure pipe 51, the mounting post 6, the threaded blind hole 60 and the convex post 61.
Detailed Description
In order to make the present invention better understood by those skilled in the art, the technical solutions of the present invention are further described below with reference to the accompanying drawings and examples.
the first embodiment is as follows:
as shown in fig. 1 to 11, the four-stroke engine capable of being turned over arbitrarily of the present invention comprises a cylinder block 1, the cylinder block 1 comprises a combustion chamber 11, an intake valve 12, an exhaust valve 13, an intake channel 14 and an exhaust channel 15, a crankshaft connecting rod piston assembly 110 is installed in the combustion chamber 11, a cylinder head cover 2, a cylinder lower cover 3 and a cylinder side cover 4 are detachably installed on the cylinder block 1, a cylinder head chamber 21 is formed between the cylinder block 1 and the cylinder head cover 2, a lubrication channel hole 22 is formed between the intake channel 14 and the cylinder head chamber 21, a crankcase chamber 31 is formed between the cylinder block 1 and the cylinder lower cover 3, a synchronous belt channel 41 is formed between the cylinder block 1 and the cylinder side cover 4, a communication hole is formed between the crankcase chamber 31 and the synchronous belt channel 41, a filter is installed in the communication hole, a belt wheel chamber 20 is arranged between the cylinder head chamber 21 and the synchronous belt channel 41, both the cylinder head chamber 21 and the synchronous, the crankshaft connecting rod piston group 110 comprises a first synchronous gear 111, a second synchronous gear 112 is installed in the belt wheel chamber 20, a synchronous belt 113 is wound on the first synchronous gear 111 and the second synchronous gear 112, the synchronous belt 113 is located in a synchronous belt channel 41, a cam 1120 is integrally formed on the second synchronous gear 112, the cam 1120 is located in the cylinder head chamber 21, an air inlet rocker arm assembly and an air outlet rocker arm assembly which are identical in structure are further installed in the cylinder head chamber 21, each of the air inlet rocker arm assembly and the air outlet rocker arm assembly comprises a transmission rocker arm 1121 and a compression rocker arm 1122, the transmission rocker arm 1121 of the air inlet rocker arm assembly and the transmission rocker arm 1121 of the air outlet rocker arm assembly are tightly attached to two sides of the cam 1120, the compression rocker arm 1122 of the air inlet rocker arm assembly and the compression rocker arm 1122 of the air outlet rocker arm assembly are respectively connected with an air inlet valve 12 and an exhaust valve 13.
a rocker shaft 1123 is respectively arranged on the intake rocker arm assembly and the exhaust rocker arm assembly in a penetrating manner, and the intake rocker arm assembly and the exhaust rocker arm assembly are in clearance fit with the corresponding rocker shafts 1123. Due to the structural design, the air inlet rocker arm assembly and the air exhaust rocker arm assembly are sleeved on the rocker shaft 1123 in a sliding mode, are convenient to install, are in clearance fit with each other, and have sufficient rotational freedom degree.
two semicircular grooves 11214 are radially formed in the inner side surfaces of the transmission rocker arm 1121 and the compression rocker arm 1122, the semicircular grooves 11214 in the transmission rocker arm 1121 and the corresponding semicircular grooves 11214 in the compression rocker arm 1122 are spliced to form oil filling holes 11210, and overflow grooves 11216 are axially formed in the inner walls of the transmission rocker arm 1121 and the compression rocker arm 1122. Due to the structural design, the mixed gas enters the overflow groove 11216 from the oil filling hole 11210 and rotates along with the rotation of the intake rocker arm assembly and the exhaust rocker arm assembly, so that lubricating oil in the mixed gas can lubricate the contact surfaces of the whole intake rocker arm assembly, the whole exhaust rocker arm assembly and the rocker arm shaft 1123, and redundant mixed gas flows out of the overflow groove 11215, so that the structure is simple, and the manufacturing cost is reduced.
Stepped holes 11213 are axially formed in the inner side surfaces of the transmission rocker arm 1121 and the compression rocker arm 1122, and two stepped holes 11213 are spliced to form an oil storage chamber. With such a structure, the mixed gas enters the oil storage chamber from the oil filling hole 11210 and is stored in the oil storage chamber, and the excessive mixed gas is discharged from the overflow groove 11216.
A rocker arm mounting table 11230 is integrally formed in the cylinder head chamber 21 of the cylinder block 1, a mounting hole matched with the rocker arm shaft 1123 is formed in the rocker arm mounting table 11230, and the rocker arm shaft 1123 is in interference fit with the mounting hole. Due to the structural design, the rocker arm shaft 1123 is in interference fit with the mounting hole, so that the rocker arm shaft 1123 can be fixedly mounted on the cylinder body 1, the structure is simple, and the disassembly is convenient.
The carburetor 5 is installed on the cylinder body 1 in a position corresponding to the air inlet channel 14, the carburetor 5 is a diaphragm type carburetor, the carburetor 5 comprises an oil inlet pipe and a diaphragm, a check valve is installed on the oil inlet pipe, an oil inlet cavity is formed between the oil inlet pipe and the diaphragm, a negative pressure pipe 51 is installed between the carburetor 5 and the cylinder body 1, and the oil inlet cavity of the carburetor 5 is communicated with the crankcase chamber 31 of the cylinder body 1 through the negative pressure pipe 51.
With the structure design, when the piston moves downwards, the space in the crankcase chamber 31 is suddenly reduced to form positive pressure, the pressure in the oil inlet cavity can be increased through the communication effect of the negative pressure pipe 51, the diaphragm is further pushed open, the carburetor 5 starts to work, oil is atomized and enters the air inlet channel 14, namely, the work of the carburetor 5 is controlled through the air pressure change of the crankcase chamber 31, the synchronization rate between the crankshaft connecting rod piston group 110 and the carburetor 5 is improved, and the synchronization rate between the air inlet valve 12, the air outlet valve 13 and the carburetor 5 is further improved.
Cylinder body 1 has a plurality of erection columns 6 in cylinder head room 21 integrated into one piece, threaded blind hole 60 has been seted up on the erection column 6, 2 inside walls of cylinder head have projection 61 in erection column 6 corresponds position integrated into one piece, the via hole has been seted up on the projection 61, wear to be equipped with fixing bolt in the via hole, the projection 61 is close to 6 one end terminal surfaces of erection column and has seted up the annular groove, the inside callipers of annular groove is equipped with first sealing washer, install second sealing washer 10 between cylinder head 2 and the cylinder body 1. Due to the structural design, the cylinder head cover 2 is connected with the cylinder body 1 through the fixing bolt, so that the structure is simple and the disassembly is convenient; meanwhile, the mounting column 6 and the convex column 61 are matched with the first sealing ring for use, so that the mixed gas in the cylinder head chamber 21 can be prevented from leaking from the through hole.
In this embodiment, gasoline and lubricating oil are mixed with air in the carburetor 5, and atomized to form a mixed gas, which then enters the intake passage 14;
in the exhaust stroke of the engine, the piston moves from the lower support point to the upper support point, simultaneously the exhaust valve 13 is opened, the intake valve 12 is closed, the gas in the combustion chamber 11 is discharged out of the engine through the exhaust valve 13, and the space of the crankcase chamber 31 is sharply enlarged due to the upward movement of the piston, negative pressure is formed, so that the mixed gas enters the crankcase chamber 31 from the intake passage 14 through the lubrication passage hole 22, the cylinder head chamber 21, the pulley chamber 20, the timing belt passage 41 and the communication hole in sequence;
Meanwhile, filtering dust impurities in the mixed gas through a filtering device;
in the intake stroke of the engine, the piston moves from an upper supporting point to a lower supporting point, simultaneously the air inlet valve 12 is opened, the exhaust valve 13 is closed, during the movement of the piston, the space of the crankcase chamber 31 is sharply reduced due to the downward movement of the piston, positive pressure is formed, so that the mixed gas enters the air inlet channel 14 from the crankcase chamber 31 through the communication hole, the synchronous belt channel 41, the pulley chamber 20, the cylinder head chamber 21 and the lubricating channel hole 22 in sequence, and the space of the combustion chamber 11 is sharply enlarged, negative pressure is formed, so that the mixed gas in the air inlet channel 14 is sucked into the combustion chamber;
in the compression stroke of the engine, the piston moves from the lower support point to the upper support point, meanwhile, the exhaust valve 13 and the intake valve 12 are closed, the mixed gas in the combustion is compressed, the space of the crankcase chamber 31 is sharply enlarged due to the upward movement of the piston, negative pressure is formed, and the mixed gas enters the crankcase chamber 31 from the intake passage 14 through the cylinder head chamber 21, the pulley chamber 20, the timing belt passage 41 and the communication hole in sequence;
in the power stroke of the engine, the spark plug ignites the compressed mixed gas, the combusted gas expands rapidly to push the piston to move downwards, the internal energy is converted into mechanical energy, the exhaust valve 13 and the intake valve 12 are closed, and in the piston movement process, the space of the crankcase chamber 31 is rapidly reduced due to the upward movement of the piston to form positive pressure, so that the mixed gas enters the intake passage 14 from the crankcase chamber 31 through the communication hole, the synchronous belt passage 41, the belt wheel chamber 20 and the cylinder head chamber 21 in sequence;
through the four strokes, a cycle is completed, in which the mixed gas passes through the cylinder head chamber 21, the pulley chamber 20, the timing belt passage 41 and the crankcase chamber 31 four times back and forth, and the lubricating oil in the mixed gas can lubricate each part in the cylinder head chamber 21, the pulley chamber 20, the timing belt passage 41 and the crankcase chamber 31.
Example two:
Compared with the first embodiment, the only different structure of this embodiment is: the first check valve is further installed in the communication hole, a return pipe is arranged between the cylinder head chamber 21 and the crankcase chamber 31, and a second check valve is installed in the return pipe.
with the structure design, the mixed gas enters the crankcase chamber 31 through the cylinder head chamber 21, the belt wheel chamber 20, the synchronous belt channel 41 and the communication hole, and then returns to the cylinder head chamber 21 from the return pipe, and the error of the flowing direction is avoided through the first one-way valve and the second one-way valve.
The above details are provided for the four-stroke engine capable of arbitrarily turning over provided by the present invention. The description of the specific embodiments is only intended to facilitate an understanding of the method of the invention and its core ideas. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (8)
1. A four-stroke engine capable of being overturned randomly comprises a cylinder body (1), wherein the cylinder body (1) comprises a combustion chamber (11), an air inlet valve (12), an exhaust valve (13), an air inlet channel (14) and an exhaust channel (15), a crankshaft connecting rod piston group (110) is installed in the combustion chamber (11), and the four-stroke engine is characterized in that: demountable installation has cylinder head lid (2), cylinder body lower cover (3) and cylinder body side cap (4) on cylinder body (1), form cylinder head room (21) between cylinder body (1) and cylinder head lid (2), be equipped with lubrication channel hole (22) between admission passage (14) and cylinder head room (21), form crankcase room (31) between cylinder body (1) and the cylinder body lower cover (3), form synchronous belt passageway (41) between cylinder body (1) and the cylinder body side cap (4), be equipped with the intercommunicating pore between crankcase room (31) and synchronous belt passageway (41), install filter equipment in the intercommunicating pore, be equipped with between cylinder head room (21) and synchronous belt passageway (41) and take turns room (20), cylinder head room (21) and synchronous belt passageway (41) all communicate with take turns room (20), crankshaft connecting rod piston group (110) includes first synchronizing gear (111), a second synchronous gear (112) is installed in the belt wheel chamber (20), a synchronous belt (113) is arranged on the first synchronous gear (111) and the second synchronous gear (112) in a winding mode, the synchronous belt (113) is located in a synchronous belt channel (41), a cam (1120) is integrally formed on the second synchronous gear (112), the cam (1120) is located in a cylinder head chamber (21), an air inlet rocker arm assembly and an air outlet rocker arm assembly which are identical in structure are further arranged in the cylinder head chamber (21), the air inlet rocker arm assembly and the air outlet rocker arm assembly respectively comprise a transmission rocker arm (1121) and a compression rocker arm (1122), the transmission rocker arm (1121) of the air inlet rocker arm assembly and the transmission rocker arm (1121) of the air outlet rocker arm assembly are tightly attached to two sides of the cam (1120) respectively, and the compression rocker arms (1122) of the air inlet rocker arm assembly (1122) and the air outlet rocker arm assembly are connected with an inlet valve (12), an outlet valve (1122, And an exhaust valve (13) in which the corresponding transmission rocker arm (1121) and compression rocker arm (1122) are engaged with each other.
2. an arbitrarily reversible four-stroke engine as claimed in claim 1, wherein: and rocker arms (1123) are respectively arranged on the intake rocker arm assembly and the exhaust rocker arm assembly in a penetrating manner, and the intake rocker arm assembly and the exhaust rocker arm assembly are in clearance fit with the corresponding rocker arms (1123).
3. A reversible four-stroke engine according to claim 2, wherein: two semicircular grooves (11214) are radially formed in the inner side faces of the transmission rocker arm (1121) and the compression rocker arm (1122), the semicircular grooves (11214) in the transmission rocker arm (1121) and the corresponding semicircular grooves (11214) in the compression rocker arm (1122) are spliced to form oil filling holes (11210), and overflow grooves (11216) are axially formed in the inner walls of the transmission rocker arm (1121) and the compression rocker arm (1122).
4. A reversible four-stroke engine according to claim 3, wherein: stepped holes (11213) are axially formed in the inner side faces of the transmission rocker arm (1121) and the compression rocker arm (1122), and the two stepped holes (11213) are spliced to form an oil storage chamber.
5. an arbitrarily reversible four-stroke engine according to claim 4, wherein: the cylinder body (1) is integrally formed with a rocker arm mounting table (11230) in a cylinder head chamber (21), a mounting hole matched with a rocker arm shaft (1123) is formed in the rocker arm mounting table (11230), and the rocker arm shaft (1123) is in interference fit with the mounting hole.
6. An arbitrarily reversible four-stroke engine as claimed in claim 5, wherein: the carburetor (5) is installed on the corresponding position of the air inlet channel (14) of the cylinder body (1), the carburetor (5) is a diaphragm type carburetor, the carburetor (5) comprises an oil inlet pipe and a diaphragm, a check valve is installed on the oil inlet pipe, an oil inlet cavity is formed between the oil inlet pipe and the diaphragm, a negative pressure pipe (51) is installed between the carburetor (5) and the cylinder body (1), and the oil inlet cavity of the carburetor (5) is communicated with a crankcase chamber (31) of the cylinder body (1) through the negative pressure pipe (51).
7. An arbitrarily reversible four-stroke engine as claimed in claim 6, wherein: cylinder body (1) integrated into one piece has a plurality of erection columns (6) in cylinder head room (21), set up screw thread blind hole (60) on erection column (6), cylinder head lid (2) inside wall corresponds position integrated into one piece in erection column (6) and has projection (61), the via hole has been seted up on projection (61), wear to be equipped with fixing bolt in the via hole, projection (61) are close to erection column (6) one end terminal surface and have seted up the annular groove, the inside callipers of annular groove is equipped with first sealing washer, install second sealing washer (10) between cylinder head lid (2) and cylinder body (1).
8. An arbitrarily reversible four-stroke engine as claimed in claim 7, wherein: still install first check valve in the communicating hole, be equipped with the back flow between cylinder head room (21) and crankcase room (31), install the second check valve in the back flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920446640.3U CN209742990U (en) | 2019-04-03 | 2019-04-03 | Four-stroke engine capable of being turned over randomly |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920446640.3U CN209742990U (en) | 2019-04-03 | 2019-04-03 | Four-stroke engine capable of being turned over randomly |
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| CN209742990U true CN209742990U (en) | 2019-12-06 |
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| CN201920446640.3U Withdrawn - After Issue CN209742990U (en) | 2019-04-03 | 2019-04-03 | Four-stroke engine capable of being turned over randomly |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110005500A (en) * | 2019-04-03 | 2019-07-12 | 宁波奥晟机械有限公司 | A kind of four-stroke engine that can arbitrarily overturn |
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2019
- 2019-04-03 CN CN201920446640.3U patent/CN209742990U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110005500A (en) * | 2019-04-03 | 2019-07-12 | 宁波奥晟机械有限公司 | A kind of four-stroke engine that can arbitrarily overturn |
| CN110005500B (en) * | 2019-04-03 | 2024-04-16 | 宁波奥晟机械有限公司 | Four-stroke engine capable of being turned over at will |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Zhejiang Risheng Agriculture and Forestry Science and Technology Co.,Ltd. Assignor: NINGBO AOSHENG MACHINE Co.,Ltd. Contract record no.: X2023980053134 Denomination of utility model: A four stroke engine that can be flipped freely Granted publication date: 20191206 License type: Common License Record date: 20231219 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20191206 Effective date of abandoning: 20240416 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20191206 Effective date of abandoning: 20240416 |