CN114135559A - Bolt connecting structure and method for engine - Google Patents

Bolt connecting structure and method for engine Download PDF

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Publication number
CN114135559A
CN114135559A CN202111293463.8A CN202111293463A CN114135559A CN 114135559 A CN114135559 A CN 114135559A CN 202111293463 A CN202111293463 A CN 202111293463A CN 114135559 A CN114135559 A CN 114135559A
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China
Prior art keywords
bolt
engine
gasket
delta
thickness
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CN202111293463.8A
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CN114135559B (en
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刘涛
潘永亮
何道明
石黄涛
易远扬
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Dongfeng Liuzhou Motor Co Ltd
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Dongfeng Liuzhou Motor Co Ltd
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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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
    • 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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B43/00—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Gasket Seals (AREA)

Abstract

The utility model provides a bolted connection structure and connection method for engine, its includes base, bolt and gasket, is equipped with a plurality of bolt holes that are row setting on the base, and at least one side of bolt hole is equipped with engine spare part installation department, and the bolt head is the polygon, and the bolt passes gasket and bolt hole connection, and the thickness of gasket is: delta is delta0+/-alpha multiplied by P/360; where δ is the actual shim thickness, δ0Is the thickness of the reference shim, δ0When a reference gasket is adopted, the perpendicular line of the opposite side of the bolt head and the base reference line of the bolt hole form the minimum included angle; the positions of the bolts after being connected with the bolt holes are the same, and the side edge of each bolt close to the engine part mounting part is parallel to the engine part mounting part. In designing hairWhen the engine part is installed, the engine part can be designed to be closer to the head of the bolt, so that the arrangement space of the engine is compressed, and the size of the engine is reduced.

Description

Bolt connecting structure and method for engine
Technical Field
The invention relates to the technical field of mechanical fixation, in particular to a bolt connecting structure and a bolt connecting method for an engine.
Background
In the increasingly competitive engine market, the reduction of engine size and weight is the trend of engine development, and for this reason, various manufacturers are pursuing the reduction of engine size and weight without changing engine power through continuous research and improvement.
The bolt is widely applied to the engine, and the starting position of the threaded hole for inserting the bolt is found to be random in the production process, so that the distance between the bolt head and the installation part of the engine part is inconsistent when the bolt is screwed down. If the rotation amount of the bolt can be adjusted, the distance from the bolt head to the engine part mounting part is maximized, the size of the engine part mounting part can be improved to be closer to the bolt head under the condition of meeting the requirement of the engine, the arrangement space of the engine is further compressed, and the size of the engine is reduced.
Disclosure of Invention
The purpose of the invention is: a bolt connection structure and a bolt connection method for an engine are provided, which can reduce the size of an engine part mounting part and the size of the engine by adjusting the rotation angle of a bolt.
In order to achieve the above object, the present invention provides a bolt connection structure for an engine, which includes a base, bolts and a gasket, wherein the base is provided with a plurality of bolt holes arranged in rows, at least one side of each bolt hole is provided with an engine component mounting portion, the head of each bolt is polygonal, each bolt penetrates through the gasket and is connected with the corresponding bolt hole, and the thickness of each gasket is as follows: delta is delta0±α×P/360；
Where δ is the actual shim thickness, δ0Is the thickness of the reference shim, δ0When a reference gasket is adopted, the perpendicular line of the head opposite side of the bolt and the base reference line of the bolt hole form the minimum included angle;
the bolts are in the same position as the bolt holes after being connected, and the side edge of each bolt close to the engine part mounting part is parallel to the engine part mounting part.
The embodiment of the invention discloses a bolt connecting structure for an engine, which has the beneficial effects that:
the invention changes the formula delta into delta0The thickness of the corresponding gasket of each bolt is obtained +/-alpha multiplied by P/360, and then the bolt is matched with the corresponding gasket, so that the bolt can be close to the side edge of the engine part mounting part after being screwed down and is parallel to the engine part mounting part, the distance between the bolt and the engine part mounting part is the largest, the bolt can be designed to be close to the head of the bolt when the engine part mounting part is designed, the arrangement space of the engine is further compressed, the size of the engine is further reduced, the production cost is reduced for enterprises, and the connecting structure is simple in structure and can be widely applied.
Further, n is 2 or 3. The value of n can influence the thickness of the gasket, the value of n is too small, the production and the processing are not easy, the value of n is too large, the material is wasted, and the value of n is most suitable when being 2 or 3.
Further, the bolt is a hexagon bolt. The hexagonal bolt is widely applied to industry, has various types, and can better meet various requirements of engines.
Furthermore, the periphery of the head of the bolt is provided with a plurality of annular scale marks which are distributed at equal intervals. The scales are arranged, the scale values of all the scales are the same, and the corresponding rotation amount can be calculated by the staff conveniently.
Further, the scale marks are arranged on the upper surface of the gasket. The scales are arranged on the gasket, so that corresponding rotation amount can be calculated better by workers, meanwhile, the scales on the head of the bolt can be blurred due to abrasion, and the workers can judge the rotation amount through the scales of the gasket.
A bolting method for an engine, comprising the steps of:
selecting a reference gasket, selecting a position where the side edge of the bolt close to the engine part mounting part is parallel to the engine part mounting part as a reference position, and taking a perpendicular line of the head opposite side of the bolt at the reference position as a bolt hole base reference line;
connecting the bolt with the bolt hole by penetrating the reference gasket, and when the perpendicular line of the head opposite side of the bolt is positioned at the right side of the base reference line of the bolt hole, clockwise rotating the bolt by a certain angle alpha until the perpendicular line of the head opposite side of the bolt is superposed with the base reference line of the bolt hole; at this time, the thickness of the actual shim was adjusted to: delta is delta0－α×P/360，
When the perpendicular line of the head opposite side of the bolt is positioned on the left side of the bolt hole base datum line, the bolt is rotated anticlockwise by a certain angle alpha until the perpendicular line of the head opposite side of the bolt is superposed with the bolt hole base datum line; at this time, the thickness of the actual shim was adjusted to: delta is delta0+α×P/360，
And finally, penetrating the bolts through an actual gasket to be connected with the bolt holes so as to ensure that the positions of the bolts after being connected with the bolt holes are the same, and enabling the side edge of each bolt close to the engine part mounting part to be parallel to the engine part mounting part.
The embodiment of the invention discloses a bolt connecting method for an engine, which has the beneficial effects that: the thickness of an actual gasket calculated by adopting a corresponding formula is determined according to the fact that the perpendicular line of the opposite side of the bolt is positioned on the left side or the right side of the base datum line of the bolt hole and the included angle between two lines, the side edge, close to the engine part mounting part, of each bolt is parallel to the engine part mounting part through the matching of the bolt and the corresponding actual gasket, the distance between the bolt and the engine part mounting part is the largest, and then the bolt can be designed to be closer to the head of the bolt when the engine part mounting part is designed, so that the arrangement space of the engine is compressed. The connection method is simple to operate, high in applicability and capable of being widely applied.
Drawings
FIG. 1 is a diagram illustrating a distance between a bolt and an edge line of an engine component mounting portion when the bolt is mounted according to an embodiment of the present invention;
FIG. 2 is a hex bolt (left) and washer (right) according to an embodiment of the present invention;
FIG. 3 is a perspective view of a bolt according to an embodiment of the present invention;
in the figure, 1, bolt; 11. a bolt head; 12. a perpendicular line for opposite sides; 13. scale lines; 2. a base; 3. an engine component mounting section; 4. a reference line; 5. and (7) a gasket.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
As shown in fig. 1 to 3, a bolt connection structure for an engine according to a preferred embodiment of the present invention includes a base 2, bolts 1 and a gasket 5, where the base 2 is provided with a plurality of bolt holes arranged in rows, at least one side of each bolt hole is provided with an engine component mounting portion 3, a bolt head 11 is a polygon, the bolt 1 penetrates through the gasket 5 to be connected with the bolt hole, and a thickness of the gasket 5 is: delta is delta0±α×P/360；
Where δ is the actual shim thickness, δ0Is the thickness of the reference shim, δ0Where P is the pitch of the bolt 1, n is a constant that varies depending on the pitch, and α is the reference shimThe minimum included angle between the perpendicular line 12 of the opposite side of the bolt head 11 and the reference line 4 of the bolt hole base 2;
the positions of the bolts 1 after being connected with the bolt holes are the same, and the side edge of each bolt 1 close to the engine part mounting part 3 is parallel to the engine part mounting part 3.
n is 2 or 3. The value of n can influence the thickness of the gasket 5, the value of n is too small, the production and the processing are not easy, the value of n is too large, the material is wasted, and the value of n is most suitable when being 2 or 3.
The bolt 1 is a hexagon bolt. The hexagonal bolt is widely applied to industry, has various types, and can better meet various requirements of engines.
The periphery of the bolt head 11 is provided with a plurality of annular scale marks 13 which are distributed at equal intervals. The scales are arranged, the scale values of all the scales are the same, and the corresponding rotating angle can be calculated by the staff conveniently.
The scale marks 13 are provided on the upper surface of the spacer 5. The scale marks 13 are arranged on the gasket 5, so that a worker can calculate the corresponding rotation angle better, meanwhile, the scale marks 13 at the head of the bolt 1 can be blurred due to abrasion, and the worker can judge the rotation angle through the scales of the gasket 5.
In this embodiment, each scale value is 5 °, and the spacer 5 with a corresponding thickness is set every time the rotation angle is increased by 5 °, the spacer 5 with a rotation angle of 5 ° is adopted in the interval of (0, 5] °, the spacer 5 with a rotation angle of 10 ° is adopted in the interval of (5, 10] °, the spacer 5 with a rotation angle of 15 ° is adopted in the interval of (10, 15] °, and so on.
As shown in fig. 1 to 3, the working process of the present invention is: firstly, the bolt 1 and the reference gasket are screwed into the base 2, when the bolt 1 is screwed to the set torque,
taking a position where the side edge of the bolt 1 close to the engine part mounting part 3 is parallel to the engine part mounting part 3 as a reference position, and taking a perpendicular line 12 of the opposite side of the head of the bolt 1 at the reference position as a reference line 4 of the bolt 1 hole base 2;
judging whether the opposite side perpendicular line 12 of the bolt head 11 is positioned on the right or left of the reference line 4 of the bolt hole base 2,
when the opposite perpendicular line 12 of the bolt head 11 is positioned on the right of the reference line 4 of the bolt hole base 2, the angle between the opposite perpendicular line 12 and the reference line 4 is a, and the formula δ is substituted by the angle a0C × P/360, calculating the thickness of the actual gasket, and screwing the actual gasket fitting bolt 1 with the thickness again until the opposite perpendicular line 12 of the bolt head 11 is overlapped with the reference line 4 of the bolt hole base 2, wherein the bolt 1 matched with the actual gasket rotates clockwise by a corresponding angle a more than the bolt 1 matched with the reference gasket;
when the opposite perpendicular line 12 of the bolt head 11 is positioned on the left side of the reference line 4 of the bolt hole base 2, the angle C between the opposite perpendicular line 12 and the reference line 4 is substituted into the formula δ ═ δ0+ C × P/360, calculating the thickness of the actual gasket, and screwing the actual gasket with the thickness together with the bolt 1 again until the opposite perpendicular line 12 of the head of the bolt 1 is superposed with the datum line 4 of the hole base 2 of the bolt 1; at this time, the bolt 1 engaged with the actual gasket rotates counterclockwise by a corresponding angle C less than the bolt 1 engaged with the reference gasket.
If the vertex angle of the bolt head 11 coincides with the reference line 4 and the angle between the perpendicular line to the edge 12 and the reference line 4 is B, the actual thickness of the gasket can be calculated by selecting any one of the calculation methods described above when the perpendicular line to the edge 12 is located on the right or left side of the reference line 4 of the bolt hole base 2.
To sum up, the bolt 1 connecting structure for the engine of the embodiment of the invention has the following beneficial effects: the invention changes the formula delta into delta0The thickness of the corresponding gasket of each bolt 1 is obtained by +/-alpha multiplied by P/360, and then each bolt 1 is matched with the corresponding gasket 5, so that the bolt 1 can be parallel to the engine part mounting part 3 by the side edge close to the engine part mounting part 3 after being screwed down, the distance between the bolt 1 and the engine part mounting part is the largest at the moment, and then the bolt 1 can be designed to be closer to the head of the bolt 1 when the engine part mounting part 3 is designed, so that the arrangement space of an engine is compressed, so that the size of the engine is reduced, the production cost is reduced for enterprises, the structure of the connection structure is simple, and the connection structure can be widely applied.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.

Claims (6)

1. The utility model provides a bolted connection structure for engine, its includes base, bolt and gasket, be equipped with a plurality of bolt holes that are row setting on the base, its characterized in that, at least one side of bolt hole is equipped with engine parts installation department, the head of bolt is the polygon, the bolt passes the gasket with bolt hole connection, the thickness of gasket is: delta is delta0±α×P/360；
Where δ is the actual shim thickness, δ0Is the thickness of the reference shim, δ0When a reference gasket is adopted, the perpendicular line of the head opposite side of the bolt and the base reference line of the bolt hole form the minimum included angle;
the bolts are in the same position as the bolt holes after being connected, and the side edge of each bolt close to the engine part mounting part is parallel to the engine part mounting part.
2. The bolt connection structure for an engine according to claim 1, wherein n is 2 or 3.
3. The bolt connection structure for an engine according to claim 2, wherein the bolt is a hexagon bolt.
4. The bolt connection structure for an engine according to claim 2, wherein the outer periphery of the head of the bolt is provided with a plurality of annular equally-spaced graduation marks.
5. The bolt connection structure for an engine according to claim 4, wherein the scale mark is provided on an upper surface of the washer.
6. A bolt connecting method for an engine, which is performed using the bolt connecting structure according to any one of claims 1 to 5, characterized by comprising the steps of:
selecting a reference gasket, selecting a position where the side edge of the bolt close to the engine part mounting part is parallel to the engine part mounting part as a reference position, and taking a perpendicular line of the head opposite side of the bolt at the reference position as a bolt hole base reference line;
connecting the bolt with the bolt hole by penetrating the reference gasket, and when the perpendicular line of the head opposite side of the bolt is positioned at the right side of the base reference line of the bolt hole, clockwise rotating the bolt by a certain angle alpha until the perpendicular line of the head opposite side of the bolt is superposed with the base reference line of the bolt hole; at this time, the thickness of the actual shim was adjusted to: delta is delta0－α×P/360，
When the perpendicular line of the head opposite side of the bolt is positioned on the left side of the bolt hole base datum line, the bolt is rotated anticlockwise by a certain angle alpha until the perpendicular line of the head opposite side of the bolt is superposed with the bolt hole base datum line; at this time, the thickness of the actual shim was adjusted to: delta is delta0+α×P/360，
And finally, penetrating the bolts through an actual gasket to be connected with the bolt holes so as to ensure that the positions of the bolts after being connected with the bolt holes are the same, and enabling the side edge of each bolt close to the engine part mounting part to be parallel to the engine part mounting part.
CN202111293463.8A 2021-11-03 2021-11-03 Bolt connection structure and method for engine Active CN114135559B (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN202111293463.8A CN114135559B (en) 2021-11-03 2021-11-03 Bolt connection structure and method for engine

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CN114135559B CN114135559B (en) 2023-06-16

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CN109973496A (en) * 2019-04-02 2019-07-05 柳州钢铁股份有限公司 Bolt retainer and method for locking
CN211778448U (en) * 2020-03-23 2020-10-27 夏昌明 Bolt gasket anti-loosening structure and gasket under nut-free condition
CN111692004A (en) * 2020-05-21 2020-09-22 东风柳州汽车有限公司 Engine and cylinder body water jacket thereof

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