KR20170073799A - Turning Gear for Engine - Google Patents

Turning Gear for Engine Download PDF

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Publication number
KR20170073799A
KR20170073799A KR1020150181880A KR20150181880A KR20170073799A KR 20170073799 A KR20170073799 A KR 20170073799A KR 1020150181880 A KR1020150181880 A KR 1020150181880A KR 20150181880 A KR20150181880 A KR 20150181880A KR 20170073799 A KR20170073799 A KR 20170073799A
Authority
KR
South Korea
Prior art keywords
gear
main body
engine
flywheel cover
coupled
Prior art date
Application number
KR1020150181880A
Other languages
Korean (ko)
Inventor
박재완
한승용
정성수
Original Assignee
현대중공업 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 현대중공업 주식회사 filed Critical 현대중공업 주식회사
Priority to KR1020150181880A priority Critical patent/KR20170073799A/en
Publication of KR20170073799A publication Critical patent/KR20170073799A/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
    • F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
    • F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
    • F16H2001/323—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear comprising eccentric crankshafts driving or driven by a gearing

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Gear Transmission (AREA)

Abstract

The present invention relates to a motorcycle comprising a main body coupled to a flywheel cover covering a base for rotating a crankshaft of an engine, a first gear rotatably coupled to one side of the main body and engaged with the basic gear, And a second gear rotatably coupled to the main body so as to be located at a position spaced apart from a side of the main body, wherein the second gear rotates the first gear to rotate the first gear so that the crankshaft rotates To a turning gear for an engine.

Description

[0001] Turning Gear for Engine [0002]

The present invention relates to an engine turning gear for rotating a crankshaft of an engine.

Generally, an engine is a device for supplying propulsion to a vehicle such as a ship, a vehicle, and an aircraft. These engines include a cylinder that explodes with air and fuel blast, a piston that converts the explosion into power, a crank that is connected to the piston and converts the linear motion of the piston into rotational motion, a crank shaft that is the rotation axis of the crank, And a flywheel, which is made by assembling various parts. The flywheel consists of a gear rim and a flywheel cover which are joined to the crankshaft.

On the other hand, the engine rotates the crankshaft for setting timing gear assembly and valve timing at the time of initial assembly or maintenance, and a turning gear is used at this time.

The turning gear is composed of a gear meshed with a gear rim of the flywheel, and a gear rotating shaft of the gear. A turning gear is coupled to a flywheel cover and rotates the crankshaft as the operator rotates the gear rotation axis of the turning gear.

Here, the turning gear according to the prior art has the following problems.

First, in the turning gear according to the related art, the gear rotation axis is located inside the flywheel cover. That is, on the flywheel cover. Accordingly, in the turning gear according to the related art, rotation of the gear rotating shaft is restricted due to the flywheel cover, so that it takes a long time to rotate the crankshaft.

Second, since the turning gear according to the related art is coupled to the flywheel cover in the axial direction in which the crankshaft is directed, the engine is installed in a narrow space. For example, there is a problem that it is difficult to install in a medium / small size engine.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an engine turning gear capable of easily rotating a crankshaft.

It is an object of the present invention to provide an engine turning gear which can be easily installed even in a small space provided with a medium / small size engine.

In order to solve the above-described problems, the present invention can include the following configuration.

A turning gear for an engine according to the present invention comprises: a main body coupled to a flywheel cover covering a base for rotating a crankshaft of the engine; A first gear rotatably coupled to one side of the main body and engaged with the base; And a second gear engaged with the first gear and rotatably coupled to the main body to be located at a position spaced apart from one side of the main body. The second gear may rotate the first gear to rotate the gear to rotate the crankshaft.

In the turning gear for an engine according to the present invention, the second gear may include a second rotation shaft passing through the body and rotatably coupled to the body. The main body may be coupled to the flywheel cover such that the second rotation axis is located at a position spaced apart from the flywheel cover.

In the turning gear for an engine according to the present invention, the main body may be coupled to the flywheel cover in a second axial direction perpendicular to a first axial direction of the crankshaft.

The turning gear for an engine according to the present invention may include a coupling portion penetrating the main body to be coupled to the flywheel cover.

The turning gear for an engine according to the present invention may include a through hole formed through the main body so that the engaging portion penetrates the main body.

According to the present invention, the following effects can be achieved.

The present invention is embodied to easily rotate the crankshaft, thereby shortening the preparation time for operating the engine by shortening the time for adjusting the position of the crank, the timing gear assembly time, and the valve timing setting time.

The present invention can be easily installed even in a small space where a medium / small sized engine is installed, so that the versatility of the engine installed in various spaces can be increased and the efficiency of use can be maximized.

1 is a schematic perspective view of an engine turning gear according to the present invention;
Fig. 2 is a schematic cross-sectional view taken along line II of Fig. 1 for explaining an engine turning gear according to the present invention. Fig.
3 is a schematic cross-sectional view for explaining a process in which an engine turning gear according to the present invention is engaged with a flywheel cover
4 is a schematic rear view for explaining the process of coupling the turning gear for the engine to the flywheel cover according to the present invention.
5 is a schematic cross-sectional view for explaining a state in which the turning gear for an engine according to the present invention is engaged with the flywheel cover

It should be noted that, in the specification of the present invention, the same reference numerals as in the drawings denote the same elements, but they are numbered as much as possible even if they are shown in different drawings.

Meanwhile, the meaning of the terms described in the present specification should be understood as follows.

The word " first, "" second," and the like, used to distinguish one element from another, are to be understood to include plural representations unless the context clearly dictates otherwise. The scope of the right should not be limited by these terms.

It should be understood that the terms "comprises" or "having" does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

It should be understood that the term "at least one" includes all possible combinations from one or more related items. For example, the meaning of "at least one of the first item, the second item and the third item" means not only the first item, the second item or the third item, but also the second item and the second item among the first item, Means any combination of items that can be presented from more than one.

Hereinafter, embodiments of an engine turning gear according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a schematic perspective view of an engine turning gear according to the present invention, FIG. 2 is a schematic sectional view based on a line II in FIG. 1 for explaining an engine turning gear according to the present invention, and FIG. FIG. 4 is a schematic rear view illustrating a process of coupling the turning gear for an engine according to the present invention to the flywheel cover, and FIG. 5 is a cross- Sectional view for explaining a state where a turning gear for an engine according to the present invention is coupled to a flywheel cover.

1 and 2, an engine turning gear 1 according to the present invention is connected to a cylinder in which air and fuel are burned for setting timing gear assembly and valve timing at the time of initial assembly or maintenance of the engine To rotate the crankshaft. In particular, the engine turning gear 1 according to the present invention can easily rotate the crankshaft by positioning the rotation shaft at a position spaced apart from the flywheel cover provided to be connected to the crankshaft. The turning gear 1 for an engine according to the present invention may rotate the crankshaft in order to adjust bottom dead center of the piston installed in the cylinder.

The turning gear 1 for an engine according to the present invention includes a main body 2 coupled to a flywheel cover 202 covering a base 201 for rotating the crankshaft 10 of the engine, A first gear 3 rotatably coupled to one side of the main body 2 and meshed with the gear 201 and a second gear 3 meshing with the first gear 3 and spaced apart from one side of the main body 2 And a second gear (4) rotatably coupled to the main body (2) so as to be positioned on the main body (2).

The crankshaft 10 (shown in Fig. 3) is a part constituting the engine, and is a rotating shaft for rotating the crank for converting the linear motion of the piston into rotational motion. A flywheel 20 is provided to the crankshaft 10 (shown in FIG. 3) to adjust the balance or adjust the position of the crankshaft. The flywheel 20 includes a gear 201 formed by gears and a flywheel cover 202 for covering the gear 201. The first gear (3) and the second gear (4) are rotatably installed in the main body (2). The first gear (3) and the second gear (4) are engaged in the main body (2). The second gear 4 may rotate the gear 201 by rotating the first gear 3 to rotate the crankshaft 10 (shown in FIG. 3).

Accordingly, the turning gear 1 for an engine according to the present invention is formed such that the first gear 3 and the second gear 4 are engaged with each other, so that a part of the second gear 4 is engaged with the flywheel And may be located at a position spaced apart from the cover 202. Therefore, the turning gear 1 for an engine according to the present invention can easily rotate the second gear 4 without being interfered with the flywheel cover 202, so that the crankshaft 10 can be easily rotated The working time for at least one of the work for assembling the timing gear, the setting work for the valve timing, and the work for adjusting the bottom dead center of the piston can be shortened.

Hereinafter, the main body 2, the first gear 3, and the second gear 4 will be described in detail with reference to the accompanying drawings.

Referring to FIGS. 1 and 2, the main body 2 is coupled to a flywheel cover 202 covering the circumference 201. The slope 201 and the flywheel cover 202 may be included in the flywheel 20. The flywheel 20 is installed to be coupled to the crankshaft 10 to adjust the balance of the crankshaft 10. Accordingly, the flywheel 20 can reduce the occurrence of vibration in the crankshaft 10. The gear 201 is formed of gears and can be coupled to the crankshaft 10 in an integral or interference fit manner. The flywheel cover 202 is formed to surround the circumference 201 at a position spaced apart from the outer circumferential surface of the circumference 201. Accordingly, the flywheel cover 202 can cover the root 201. The main body 2 may be coupled to the flywheel cover 202. For example, the main body 2 may be coupled to the flywheel cover 202 using bolts or the like. The main body 2 may be partly inserted into the flywheel cover 202 to be inserted.

The first gear (3) and the second gear (4) are coupled to the main body (2). The first gear 3 is coupled to one side of the main body 2 and the second gear 4 can be coupled to a position spaced apart from one side of the main body 2. In this case, the second gear 4 may be engaged with the first gear 3. The first gear 3 may be engaged with the base 201 as the main body 2 is coupled to the flywheel cover 202.

The main body 2 is formed in a polygonal shape as a whole. For example, the main body 2 may have one side to which the first gear 3 is coupled is smaller than the other side opposite to the one side. The main body 2 may be reduced in size from one side to the other side. Accordingly, the main body 2 can be easily coupled to or spaced from the flywheel cover 202. The main body 2 may be in the form of a combination of two parts. In this case, the first gear 3 and the second gear 4 may be inserted into the main body 2 to be inserted therein. In this case, the turning gear 1 for an engine according to the present invention separates the two parts constituting the main body 2, so that at least one gear of the first gear 3 and the second gear 4 It can be easily separated from the main body 2. Accordingly, the engine turning gear 1 according to the present invention can easily perform the replacement and maintenance work for the first gear 3 and the second gear 4. In addition, the main body 2 prevents foreign substances such as dust from penetrating into the inside, thereby preventing the foreign matter from interfering with the rotation of the first gear 3 and the second gear 4 .

4) perpendicular to the first axis direction (the Z-axis arrow direction, shown in Fig. 4) toward the crankshaft 10, and the second axis direction To the flywheel cover 202, as shown in FIG. Specifically, the main body 2 may be coupled to the flywheel cover 202 in a first direction (D1 arrow direction, shown in FIG. 4). For example, the first direction (D1 arrow direction) may be a direction to avoid a starter for starting the engine. The first direction (D1 arrow direction) may be the second axis direction (X axis arrow direction). When the main body 2 is coupled to the flywheel cover 202 in the first direction D1 direction, it is possible to move the flywheel cover 202 in the first axial direction (Z-axis arrow direction) The main body 2 can be easily coupled to the flywheel cover 202 without the need. That is, even if the engine to which the flywheel cover 202 is coupled is installed in the first axial direction (the Z-axis direction) without a clearance space, the main body 2 is supported by the flywheel cover 202, Direction (the X-axis arrow direction). Therefore, the engine turning gear 1 according to the present invention is installed in a narrow space. For example, it can be easily combined with a medium-sized engine and a small-sized engine, so that the versatility of the engine installed in various spaces can be increased and the efficiency of use can be maximized.

Referring to FIGS. 2 and 3, the first gear 3 is rotatably coupled to one side of the main body 2. For example, the first gear 3 may be rotatably coupled to one side of the main body 2 to which the flywheel cover 202 is coupled. As the main body 2 is coupled to the flywheel cover 202, the first gear 3 can be engaged with the root 201. In this case, the second gear 4 may be positioned in a direction opposite to the direction in which the gear 201 is positioned with respect to the first gear 3. The second gear (4) can be engaged with the first gear (3). The first gear (3) can be rotated as the second gear (4) is rotated. Accordingly, the first gear 3 can rotate the root 201.

The first gear 3 may be formed as a disk-like rotating body with an outer circumferential surface as a protrusion. The projections may be formed at regular intervals so as to be engaged with the root 201. The first gear 3 rotates about the first rotation axis. The first rotation shaft is rotatably coupled to the main body 2 with a shaft located at the center of the first gear 3. Accordingly, the first gear 3 can rotate about the first rotation axis. The first gear 3 may be smaller than the main body 2. Accordingly, the first gear (3) may be inserted into the main body (2) so that all or part of the first gear (3) is inserted. The first gear 3 may be a spur gear but is not limited thereto and may be another gear such as a helical gear as long as it can engage with the gear 201 to rotate the gear 201.

Although not shown, the first gear 3 may be coupled to one side of the main body 2 so as to partially protrude from the main body 2. For example, the first gear 3 may protrude partly from the main body 2 so as to engage with the base 201. Accordingly, the turning gear 1 for an engine according to the present invention prevents the main body 2 from interfering with the first gear 3 even when the first gear 3 and the gear 201 are engaged with each other, The shaft 10 can be easily rotated.

2 to 4, the second gear 4 is engaged with the first gear 3. For example, the second gear 4 may be engaged with the first gear 3 by being coupled to the main body 2 such that the second gear 4 is located at a position spaced apart from one side of the main body 2. In this case, the second gear 4 may be rotatably coupled to the main body 2. As the second gear 4 rotates, the first gear 3 rotates and the gear 201 rotates as the first gear 3 rotates. As a result, the second gear 4 can rotate the gear 201 by rotating the first gear 3 so that the crankshaft 10 rotates.

The second gear 4 may be formed in the same size as the first gear 3 but is not limited to the first gear 3 and the second gear 4 such as the crankshaft 10, And may be formed in different sizes depending on the required torque. That is, the second gear 4 may be formed to have a different size from the first gear 3 so as to have a different gear ratio according to a required torque. For example, the second gear 4 may be formed larger than the first gear 3 when a large torque is required to rotate the crankshaft 10. For example, the second gear 4 may be formed to have a smaller size than the first gear 3 for finely rotating the crankshaft 10. The second gear 4 may include a second rotation shaft 41 for rotating the first gear 3.

3 and 4, the second rotary shaft 41 is rotatably coupled to the main body 2 by a shaft located at the center of the second gear 4. For example, the second rotation shaft 41 may be installed so as to pass through a through hole formed in the main body 2 in a direction toward the outside from the inside of the main body 2. For example, the second rotation shaft 41 is formed to protrude in a first axial direction (Z-axis arrow direction, shown in FIG. 4) perpendicular to the main body 2, have. Accordingly, the operator can easily rotate the second rotation shaft 41 protruding from the main body 2. [

The main body 2 may be coupled to the flywheel cover 202 such that the second rotation shaft 41 is located at a position spaced apart from the flywheel cover 202. 3 and 5, the main body 2 is formed with a protruding portion for engaging with the flywheel cover 202 between one side to which the first gear 3 is engaged and the other side opposite to the other side. The second rotation axis 41 is coupled to the main body 2 at a position further away from one side of the main body 2 than the projecting portion. Accordingly, even though the main body 2 is coupled to the flywheel cover 202, the second rotation shaft 41 may not be positioned on the flywheel cover 202. That is, the second rotary shaft 41 may be located at a position spaced apart from the flywheel cover 202. Accordingly, the turning gear 1 for an engine according to the present invention is formed such that the second rotating shaft 41 protrudes from the main body 2, so that the operator can easily rotate the second rotating shaft 41 . Therefore, the turning gear 1 for an engine according to the present invention can shorten the time consumed for rotating the crankshaft 10. The turning gear 1 for an engine according to the present invention is arranged such that even when the main body 2 is coupled to the flywheel cover 202, the second rotation shaft 41 is located at a position spaced from the flywheel cover 202 The worker can rotate the second rotation shaft 41 more easily without being interfered with the flywheel cover 202, and thus the time consumed for rotating the crankshaft 10 can be further shortened.

3 to 5, the turning gear 1 for an engine according to the present invention may include a coupling portion 5 and a through hole 6.

The engaging portion 5 may penetrate the main body 2 such that the main body 2 is engaged with the flywheel cover 202. For example, the coupling portion 5 may be coupled to the flywheel cover 202 through one side of the main body 2. The other side of the engaging portion 5 can prevent the main body 2 from being separated from the flywheel cover 202 by supporting the main body 2. [ Accordingly, the engaging portion 5 can engage the main body 2 with the flywheel cover 202. For example, the coupling portion 5 may be a coupling device such as a bolt. Although not shown, the engaging portion 5 may be temporarily coupled to the insertion groove formed in the main body 2 to prevent the main body 2 from being lost when the main body 2 is detached from the flywheel cover 202 .

The through hole 6 (shown in FIG. 1) is formed through the main body 2 so that the engaging portion 5 is penetrated. For example, the through hole 6 may be formed in a protruding portion formed between one side and the other side of the main body 2. The through-hole 6 may be formed through the main body 2 in a direction toward the one side and the other side of the main body 2 at the projecting portion. Accordingly, the engaging portion 5 can penetrate the through-hole 6 to engage the main body 2 with the flywheel cover 202. The turning gear 1 for an engine according to the present invention may include a plurality of the engaging portions 5 and the through holes 6 to further increase the engaging force of the engaging portion 5 and the flywheel cover 202.

The turning gear 1 for an engine according to the present invention avoids a starter for starting the engine in the flywheel cover 202 and connects the flywheel cover 202 to the flywheel cover 202 in the first direction . Accordingly, the engine turning gear 1 according to the present invention can improve the ease of rotation of the crankshaft 10 by minimizing interference with the rotation of the second gear 4. Therefore, the turning gear 1 for an engine according to the present invention is capable of rotating the crankshaft 10 such as a timing gear assembling operation, a valve timing setting operation, and a piston bottom dead center operation, So that the running time of the engine can be shortened.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Will be clear to those who have knowledge of.

1: Turning gear for engines
2: Main body 3: First gear
4: second gear 41: second rotation shaft
5: engaging portion 6: through hole

Claims (5)

A body coupled to a flywheel cover covering a base for rotating the crankshaft of the engine;
A first gear rotatably coupled to one side of the main body and engaged with the base; And
And a second gear engaged with the first gear and rotatably coupled to the body so as to be located at a position spaced apart from one side of the body,
And the second gear rotates the first gear to rotate the crankshaft so that the crankshaft rotates. The method according to claim 1,
And the second gear includes a second rotation shaft passing through the body and rotatably coupled to the body,
And the main body is coupled to the flywheel cover so that the second rotation axis is located at a position spaced apart from the flywheel cover. The method according to claim 1,
Wherein the main body is coupled to the flywheel cover in a second axial direction perpendicular to a first axial direction toward which the crankshaft is directed. The method according to claim 1,
And an engaging portion penetrating the main body to engage with the flywheel cover. 5. The method of claim 4,
And a through hole formed through the main body so that the engaging portion penetrates through the main body.
KR1020150181880A 2015-12-18 2015-12-18 Turning Gear for Engine KR20170073799A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150181880A KR20170073799A (en) 2015-12-18 2015-12-18 Turning Gear for Engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150181880A KR20170073799A (en) 2015-12-18 2015-12-18 Turning Gear for Engine

Publications (1)

Publication Number Publication Date
KR20170073799A true KR20170073799A (en) 2017-06-29

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109252905A (en) * 2018-07-09 2019-01-22 浙江杰特优动力机械有限公司 Based on the electric barring and its working method axially engaged
KR102249357B1 (en) 2019-12-23 2021-05-07 주식회사 한국가스기술공사 Coupling apparatus of tilting rotation type truning gear

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109252905A (en) * 2018-07-09 2019-01-22 浙江杰特优动力机械有限公司 Based on the electric barring and its working method axially engaged
CN109252905B (en) * 2018-07-09 2024-06-07 浙江杰特优动力机械股份有限公司 Electric jigger based on axial engagement and working method thereof
KR102249357B1 (en) 2019-12-23 2021-05-07 주식회사 한국가스기술공사 Coupling apparatus of tilting rotation type truning gear

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