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CN111336049B - Small gasoline engine with energy storage device - Google Patents

Small gasoline engine with energy storage device Download PDF

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Publication number
CN111336049B
CN111336049B CN202010040129.0A CN202010040129A CN111336049B CN 111336049 B CN111336049 B CN 111336049B CN 202010040129 A CN202010040129 A CN 202010040129A CN 111336049 B CN111336049 B CN 111336049B
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CN
China
Prior art keywords
energy storage
gasoline engine
sound
box
cooling
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CN202010040129.0A
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Chinese (zh)
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CN111336049A (en
Inventor
沈永江
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Chongqing Kema Industry & Trade Co ltd
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Chongqing Kema Industry & Trade Co ltd
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02NSTARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N11/00Starting of engines by means of electric motors
    • F02N11/08Circuits or control means specially adapted for starting of engines
    • F02N11/0862Circuits or control means specially adapted for starting of engines characterised by the electrical power supply means, e.g. battery
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02NSTARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N15/00Other power-operated starting apparatus; Component parts, details, or accessories, not provided for in, or of interest apart from groups F02N5/00 - F02N13/00
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02NSTARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N15/00Other power-operated starting apparatus; Component parts, details, or accessories, not provided for in, or of interest apart from groups F02N5/00 - F02N13/00
    • F02N15/10Safety devices not otherwise provided for
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K5/00Casings; Enclosures; Supports
    • H02K5/24Casings; Enclosures; Supports specially adapted for suppression or reduction of noise or vibrations

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Hybrid Electric Vehicles (AREA)

Abstract

The invention discloses a small gasoline engine with an energy storage device, which relates to the technical field of gasoline engines and comprises a gasoline engine body and a reduction gearbox arranged inside the gasoline engine body, wherein an energy storage box is fixedly arranged on the side surface of the gasoline engine body, an assembly inner box is fixedly arranged on the inner side of the energy storage box, a cooling cavity is arranged between the energy storage box and the assembly inner box, a bearing seat is arranged on the inner side of the assembly inner box, an energy storage battery is arranged at the upper end of the bearing seat, cooling liquid is filled in the cooling cavity, a positioning column is fixedly arranged at the bottom end of the inner side of the assembly inner box, heat generated by the energy storage battery can be dissipated into the assembly inner box, the cooling liquid in the cooling cavity can rapidly cool the heat in the assembly inner box, the normal use of the energy storage battery is effectively prevented from being influenced due to overhigh heat accumulation temperature, and the energy storage battery can be buffered and protected by a spring, the energy storage battery is prevented from being easily damaged in the using process.

Description

Small gasoline engine with energy storage device
Technical Field
The invention relates to the technical field of gasoline engines, in particular to a small gasoline engine with an energy storage device.
Background
The gasoline engine generally adopts a reciprocating piston type structure, the gasoline engine is composed of a body, a crank link mechanism, a gas distribution system, an oil supply system, a lubricating system, an ignition system and the like, has the advantages of light weight, low manufacturing cost, low noise, good starting performance and the like, and is widely applied to passenger cars, motorcycles, chain saws and other low-power machines.
However, the conventional small gasoline engine is in use, because the heat generated by the energy storage battery can not be cooled rapidly, the heat accumulation temperature is too high, the normal use of the energy storage battery is easily influenced, the energy storage battery lacks a protective component, the energy storage battery is easily damaged by vibration during the operation of the gasoline engine, and the noise generated during the operation of a driving motor in the gasoline engine is large, so that the technical personnel in the field provide the small gasoline engine with the energy storage device.
Disclosure of Invention
The invention aims to provide a small gasoline engine with an energy storage device, and aims to solve the problems that the normal use of the energy storage battery is easily influenced due to overhigh heat accumulation temperature because the heat generated by the energy storage battery cannot be rapidly cooled in the use process of the traditional small gasoline engine, the energy storage battery lacks a protective component, the energy storage battery is easily damaged due to vibration generated during the work of the gasoline engine, and the noise generated during the work of a driving motor in the gasoline engine is relatively high in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a small gasoline engine with an energy storage device comprises a gasoline engine body and a reduction gearbox arranged in the gasoline engine body, wherein an energy storage box is fixedly arranged on the side surface of the gasoline engine body, an assembly inner box is fixedly arranged on the inner side of the energy storage box, a cooling cavity is arranged between the energy storage box and the assembly inner box, a bearing seat is arranged on the inner side of the assembly inner box, an energy storage battery is arranged at the upper end of the bearing seat, cooling liquid is filled in the inner position of the cooling cavity, a positioning column is fixedly arranged at the bottom end of the inner side of the assembly inner box, a spring is fixedly connected between the assembly inner box and the bearing seat, a driving motor is fixedly arranged at one side position, close to the reduction gearbox, in the gasoline engine body, a sound insulation cover is fixedly arranged on the outer side of the driving motor, a sound insulation plate is fixedly arranged on the surface of the inner side of the sound insulation cover, and a cooling sealing cover is fixedly arranged at the upper end of the cooling cavity, the surface of the cooling seal cover is provided with a ventilation opening, the upper end of the assembly inner box is fixedly provided with an assembly seal cover, the surface of the assembly seal cover is provided with a ventilation opening, the inner side of the reduction gearbox is fixedly provided with a bearing seat, and one end of the bearing seat is rotatably connected with a linkage gear.
As a still further scheme of the invention: the energy storage battery is characterized in that first cooling fins are fixedly arranged at the positions of the side faces of the energy storage box at intervals, second cooling fins are fixedly arranged at the positions of the side faces of the energy storage battery at intervals, and the cross sections of the first cooling fins and the second cooling fins are rectangular.
As a still further scheme of the invention: the bottom fixed surface of energy storage battery is provided with the installation piece, bearing seat's surface position department has seted up positioning groove, the size of installation piece and positioning groove's size looks adaptation, the installation piece with bear seat fixed connection.
As a still further scheme of the invention: the spring is movably sleeved outside the positioning column, a guide through hole is formed in the surface position of the bearing seat, and the positioning column movably penetrates through the bearing seat through the guide through hole.
As a still further scheme of the invention: the upper end position department of reference column is fixed and is provided with the stopper, the sectional shape of stopper is all circular, the diameter size of stopper is greater than the diameter size of direction through-hole.
As a still further scheme of the invention: the fixed acoustic celotex board that is provided with in inboard surface position department of sound-proof housing, the sound insulation cavity has been seted up in the inside position department of acoustic celotex board, sound insulation cotton is filled in sound insulation cavity's inboard position department, sound insulation cotton is the cotton component of centrifugal glass.
As a still further scheme of the invention: the cooling liquid is a glycol type cooling liquid component, and heat dissipation holes are formed in the surface position of the sound-proof cover.
As a still further scheme of the invention: the inner side position of the ventilation opening is fixedly provided with a first sealing film, the inner side position of the ventilation opening is fixedly provided with a second sealing film, and the first sealing film and the second sealing film are both waterproof breathable film members.
As a still further scheme of the invention: the output end of the driving motor is fixedly provided with a driving gear, and the driving gear is meshed with the linkage gear.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, heat generated by the energy storage battery is dissipated into the assembly inner box, the cooling liquid in the cooling cavity can rapidly cool the heat in the assembly inner box, so that the problem that the normal use of the energy storage battery is easily influenced due to overhigh heat accumulation temperature is effectively prevented, the energy storage battery can be buffered and protected by the spring, the energy storage battery is prevented from being easily damaged in the use process, noise generated when the driving motor works can be blocked by the sound-proof cover, the sound-proof plate and the sound-proof cotton, the sound-proof and noise-reducing effects are achieved, and the noise generated when the gasoline engine is used is favorably reduced.
Drawings
FIG. 1 is a schematic perspective view of a small gasoline engine with an energy storage device;
FIG. 2 is a front view of an energy storage tank of a small gasoline engine having an energy storage device;
FIG. 3 is a schematic diagram of a side view of a small gasoline engine with an energy storage device;
FIG. 4 is an enlarged structural view of portion A of a small gasoline engine having an energy storage device;
fig. 5 is an enlarged schematic structural diagram of a portion B of a small gasoline engine having an energy storage device.
In the figure: 1. a gasoline engine body; 2. an energy storage tank; 201. a first heat sink; 3. assembling the inner box; 4. a cooling chamber; 401. cooling liquid; 5. cooling the sealing cover; 501. a ventilation opening; 502. a first sealing film; 6. assembling a sealing cover; 601. a vent; 602. a second sealing film; 7. an energy storage battery; 701. a second heat sink; 702. mounting blocks; 8. a bearing seat; 801. a positioning groove; 802. a guide through hole; 9. a positioning column; 901. a limiting block; 10. a spring; 11. a reduction gearbox; 111. a bearing seat; 112. a linkage gear; 12. a sound-proof housing; 121. heat dissipation holes; 122. a sound insulation cavity; 123. sound insulation cotton; 124. a sound insulating board; 13. a drive motor; 131. a drive gear.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 5, the present invention provides a technical solution:
a small gasoline engine with an energy storage device comprises a gasoline engine body 1 and a reduction gearbox 11 arranged inside, an energy storage box 2 is fixedly arranged on the side surface of the gasoline engine body 1, an assembly inner box 3 is fixedly arranged on the inner side of the energy storage box 2, a cooling cavity 4 is arranged between the energy storage box 2 and the assembly inner box 3, a bearing seat 8 is arranged on the inner side of the assembly inner box 3, an energy storage battery 7 is arranged at the upper end of the bearing seat 8, cooling liquid 401 is filled in the inner position of the cooling cavity 4, a positioning column 9 is fixedly arranged at the bottom end of the inner side of the assembly inner box 3, a spring 10 is fixedly connected between the assembly inner box 3 and the bearing seat 8, a driving motor 13 is fixedly arranged at one side position, close to the reduction gearbox 11, inside of the gasoline engine body 1, a sound-proof cover 12 is fixedly arranged on the outer side of the driving motor 13, a sound-proof board 124 is fixedly arranged on the inner side surface of the sound-proof cover 12, and a cooling sealing cover 5 is fixedly arranged at the upper end of the cooling cavity 4, the surface of the cooling seal cover 5 is provided with a ventilation opening 501, the upper end of the assembly inner box 3 is fixedly provided with an assembly seal cover 6, the surface of the assembly seal cover 6 is provided with a ventilation opening 601, the inner side of the reduction gearbox 11 is fixedly provided with a bearing seat 111, and one end of the bearing seat 111 is rotatably connected with a linkage gear 112.
Specifically, the fixed first fin 201 that is provided with in side position department interval of energy storage box 2, the fixed second fin 701 that is provided with in side position department interval of energy storage battery 7, first fin 201 is the rectangle with the cross sectional shape of second fin 701, the bottom fixed surface of energy storage battery 7 is provided with installation piece 702, bearing seat 8's surface position department has seted up positioning groove 801, installation piece 702's size and positioning groove 801's size looks adaptation, installation piece 702 and bearing seat 8 fixed connection, spring 10 activity cup joints in the outside of reference column 9, bearing seat 8's surface position department has seted up guiding hole 802, reference column 9 runs through in bearing seat 8 through guiding hole 802 activity, reached and made spring 10 can play the purpose of buffering guard action to energy storage battery 7.
Specifically, the upper end position of the positioning column 9 is fixedly provided with a limiting block 901, the cross section of the limiting block 901 is circular, the diameter of the limiting block 901 is larger than that of the guide through hole 802, and the purpose of limiting is achieved.
Specifically, the fixed acoustic celotex board 124 that is provided with in inboard surface position department of sound-proof housing 12, soundproof cavity 122 has been seted up in the inside position department of acoustic celotex board 124, and soundproof cotton 123 has been filled in the inboard position department of soundproof cavity 122, and soundproof cotton 123 is the cotton component of centrifugal glass, has reached the purpose that improves sound-proof housing 12 sound insulation performance.
Specifically, coolant 401 is a glycol type coolant component, heat dissipation hole 121 has been seted up to the surface position department of sound-proof housing 12, the fixed first seal membrane 502 that is provided with in the inboard position department of ventilative mouth 501, the fixed second seal membrane 602 that is provided with in the inboard position department of vent 601, first seal membrane 502 and second seal membrane 602 are a waterproof ventilated membrane component, have reached the ventilative purpose of being convenient for assemble inner box 3 and cooling chamber 4.
Specifically, the output end of the driving motor 13 is fixedly provided with a driving gear 131, and the driving gear 131 is engaged with the linkage gear 112.
The working principle is as follows: in the process of using the gasoline engine, when the energy storage battery 7 generates heat during work, the heat generated by the energy storage battery 7 is dissipated into the assembly inner box 3, the cooling cavity 4 is filled with cooling liquid 401, the cooling liquid 401 can rapidly cool the heat in the assembly inner box 3, the heat accumulation temperature is prevented from being too high, the normal use of the energy storage battery 7 is easily influenced, the gasoline engine body 1 vibrates during work, a spring 10 is fixedly connected between the assembly inner box 3 and the bearing seat 8, the spring 10 is movably sleeved on the outer side of the positioning column 9, and the spring 10 can play a role of buffering for the bearing seat 8, thereby can protect energy storage battery 7, prevent that energy storage battery 7 is impaired easily in the use, sound-proof housing 12, soundproof cotton 123 and acoustic celotex board 124 can carry out the separation to the noise that driving motor 13 during operation produced, are favorable to reducing the noise that the gasoline engine produced when using.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (9)

1. The utility model provides a small-size gasoline engine with energy memory, includes gasoline engine body (1) and sets up reduction box (11) inside, its characterized in that: an energy storage box (2) is fixedly arranged on the side face of the gasoline engine body (1), an assembly inner box (3) is fixedly arranged on the inner side of the energy storage box (2), a cooling cavity (4) is arranged between the energy storage box (2) and the assembly inner box (3), a bearing seat (8) is arranged on the inner side of the assembly inner box (3), an energy storage battery (7) is arranged at the upper end of the bearing seat (8), cooling liquid (401) is filled in the cooling cavity (4), a positioning column (9) is fixedly arranged at the bottom end of the inner side of the assembly inner box (3), a spring (10) is fixedly connected between the assembly inner box (3) and the bearing seat (8), a driving motor (13) is fixedly arranged at a position, close to one side of a reduction gearbox (11), in the gasoline engine body (1), and a sound-proof cover (12) is fixedly arranged on the outer side of the driving motor (13), the utility model discloses a cooling structure of a motor vehicle engine, including sound-proof housing (12), the inboard fixed surface of sound-proof housing (12) is provided with acoustic celotex board (124), the upper end of cooling chamber (4) is fixed and is provided with cooling closing cap (5), ventilative mouth (501) have been seted up on the surface of cooling closing cap (5), the fixed assembly closing cap (6) that is provided with in upper end of assembly inner box (3), vent (601) have been seted up on the surface of assembly closing cap (6), the inboard fixed bearing frame (111) that is provided with of reducing gear box (11), the one end of bearing frame (111) is rotated and is connected with linkage gear (112).
2. A small gasoline engine having an energy storage device as claimed in claim 1, wherein: the energy storage battery is characterized in that first cooling fins (201) are fixedly arranged at the side positions of the energy storage box (2) at intervals, second cooling fins (701) are fixedly arranged at the side positions of the energy storage battery (7) at intervals, and the cross sections of the first cooling fins (201) and the second cooling fins (701) are rectangular.
3. A small gasoline engine having an energy storage device as claimed in claim 1, wherein: the bottom fixed surface of energy storage battery (7) is provided with installation piece (702), positioning groove (801) have been seted up to the surface position department that bears seat (8), the size of installation piece (702) and positioning groove (801) size looks adaptation, installation piece (702) and bear seat (8) fixed connection.
4. A small gasoline engine having an energy storage device as claimed in claim 1, wherein: the spring (10) is movably sleeved on the outer side of the positioning column (9), a guide through hole (802) is formed in the surface position of the bearing seat (8), and the positioning column (9) movably penetrates through the bearing seat (8) through the guide through hole (802).
5. A small gasoline engine having an energy storage device as claimed in claim 1, wherein: the upper end of the positioning column (9) is fixedly provided with a limiting block (901), the cross section of the limiting block (901) is circular, and the diameter of the limiting block (901) is larger than that of the guide through hole (802).
6. A small gasoline engine having an energy storage device as claimed in claim 1, wherein: the sound-proof cover is characterized in that a sound-proof plate (124) is fixedly arranged at the position of the inner side surface of the sound-proof cover (12), a sound-proof cavity (122) is formed in the position of the inner side of the sound-proof plate (124), sound-proof cotton (123) is filled at the position of the inner side of the sound-proof cavity (122), and the sound-proof cotton (123) is a centrifugal glass cotton component.
7. A small gasoline engine having an energy storage device as claimed in claim 1, wherein: the cooling liquid (401) is a glycol type cooling liquid component, and heat dissipation holes (121) are formed in the surface position of the sound insulation cover (12).
8. A small gasoline engine having an energy storage device as claimed in claim 1, wherein: the inner side position of the ventilation opening (501) is fixedly provided with a first sealing film (502), the inner side position of the ventilation opening (601) is fixedly provided with a second sealing film (602), and the first sealing film (502) and the second sealing film (602) are both waterproof and breathable film members.
9. A small gasoline engine having an energy storage device as claimed in claim 1, wherein: the output end of the driving motor (13) is fixedly provided with a driving gear (131), and the driving gear (131) is meshed with the linkage gear (112).
CN202010040129.0A 2020-01-15 2020-01-15 Small gasoline engine with energy storage device Active CN111336049B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010040129.0A CN111336049B (en) 2020-01-15 2020-01-15 Small gasoline engine with energy storage device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010040129.0A CN111336049B (en) 2020-01-15 2020-01-15 Small gasoline engine with energy storage device

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CN111336049A CN111336049A (en) 2020-06-26
CN111336049B true CN111336049B (en) 2021-10-08

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Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0872746A (en) * 1994-09-07 1996-03-19 Kubota Corp Work vehicle
US6626065B2 (en) * 2001-05-15 2003-09-30 Hydro-Thoma Limited Hydrostatic transmission with internal fluid expansion chamber
WO2005000662A1 (en) * 2003-06-25 2005-01-06 Nsk Ltd. Electric power steering device
US20060027201A1 (en) * 2004-08-09 2006-02-09 Ryou Ono Engine starter
JP5063970B2 (en) * 2006-10-02 2012-10-31 富士重工業株式会社 Portable power work machine
US8127876B2 (en) * 2006-10-26 2012-03-06 Deere & Company Cooling enclosure for electronic motor control components
EP2718149A4 (en) * 2011-05-13 2015-04-01 Vehicle battery storage compartment
US9102331B2 (en) * 2013-09-20 2015-08-11 GM Global Technology Operations LLC Multi-functional electric module for a vehicle
US9840143B1 (en) * 2015-05-20 2017-12-12 Hydro-Gear Limited Partnership Cooling pump assembly and cooling system for utility vehicle
US10358040B1 (en) * 2015-06-01 2019-07-23 Hydro-Gear Limited Partnership Drive assembly and system for utility vehicle
JP6297016B2 (en) * 2015-10-23 2018-03-20 本田技研工業株式会社 Belt type continuously variable transmission for work equipment
CN107240661B (en) * 2017-07-25 2023-06-16 天佑电器(苏州)有限公司 Battery pack and gardening tool
CN209403052U (en) * 2018-12-21 2019-09-20 苏州宝时得电动工具有限公司 Intelligent grass-removing

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