CN113107629A - Timing positioning device and method for engine camshaft - Google Patents
Timing positioning device and method for engine camshaft Download PDFInfo
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- CN113107629A CN113107629A CN202110494948.7A CN202110494948A CN113107629A CN 113107629 A CN113107629 A CN 113107629A CN 202110494948 A CN202110494948 A CN 202110494948A CN 113107629 A CN113107629 A CN 113107629A
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- Prior art keywords
- positioning block
- limiting belt
- belt
- gear
- positioning
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/02—Valve drive
- F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
- F01L1/047—Camshafts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
- F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
- F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
- F01L1/348—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear by means acting on timing belts or chains
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/46—Component parts, details, or accessories, not provided for in preceding subgroups
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Abstract
The invention relates to the technical field of positioning tools, and discloses a timing positioning device and a timing positioning method for an engine camshaft, which comprise a first limiting belt, a second limiting belt and a positioning block; the first limiting belt is provided with a first side surface and a second side surface which is used for being meshed and connected with the exhaust camshaft gear; the first side surface and the second side surface are oppositely arranged; the second limiting belt is provided with a third side surface and a fourth side surface which is used for being meshed and connected with the air inlet camshaft gear; the third side and the fourth side are oppositely arranged; the positioning block is arranged between the first limiting belt and the second limiting belt and is respectively abutted against the first side face and the third side face. The timing positioning device and method for the engine camshaft provided by the invention have simple structure and can fix the position of the engine camshaft.
Description
Technical Field
The invention relates to the technical field of positioning tools, in particular to a timing positioning device and method for a camshaft of an engine.
Background
The modern small-sized high-speed internal combustion engine almost adopts a double overhead camshaft valve actuating mechanism, which is beneficial to improving the inflation efficiency and the engine performance. The timing cog belt transmission has the advantages of low noise, small mass, stable operation, no need of lubrication and the like, and is widely applied to a timing system of an engine with double overhead camshafts. As shown in fig. 1, an engine timing belt drive system includes a timing tensioner, a water pump pulley, an exhaust camshaft gear, an intake camshaft gear, a crankshaft timing gear, a timing idler, and a timing belt looped around the exhaust camshaft gear, the intake camshaft gear, the timing tensioner, the water pump pulley, the crankshaft timing gear, and the timing idler, respectively. As shown in fig. 2, the exhaust camshaft gear is provided with an inner rib. As shown in fig. 3, the intake camshaft gear is provided with an outer rib.
The accurate assembly of the engine timing transmission system can ensure that the valve timing phase of the engine has no deviation, which is an important factor for the normal operation and high-performance output of the engine. If the crankshaft timing gear, the exhaust camshaft gear and the intake camshaft gear cannot be accurately positioned when the timing belt is assembled, the rhythm of opening and closing of the valve is disordered, the performance of the engine is slightly influenced, the valve is propped against the piston when the engine is heavy, and the engine is scrapped.
As shown in fig. 4, the conventional solution for fixing the camshaft gear is to pin the intake and exhaust camshaft gears with two pins, and then lock the fixing tool plate to the sealing surface of the camshaft cover by bolts. The scheme has the following defects: firstly, workers have to disassemble an engine wire harness, an ignition coil and a camshaft cover cap to install and fix a tooling plate, so that the working procedure is complicated and the operation is complex; secondly, the installation of the fixed tooling plate utilizes the threaded hole of the camshaft cover cap, so that the thread is easily damaged in the installation process, the cylinder cover cap cannot be installed, and the cylinder cover is scrapped; finally, the fixed tooling is heavy, high in manufacturing precision and high in cost, and is not beneficial to being popularized to automobile after-sale service stations all over the country.
Disclosure of Invention
The purpose of the invention is: the timing positioning device and method for the engine camshaft are simple in structure and capable of fixing the position of the engine camshaft.
In order to achieve the purpose, the invention provides an engine camshaft timing positioning device which comprises a first limiting belt, a second limiting belt and a positioning block, wherein the first limiting belt is fixed on the first limiting belt;
the first limiting belt is provided with a first side surface and a second side surface which is used for being meshed and connected with the exhaust camshaft gear; the first side surface and the second side surface are oppositely arranged;
the second limiting belt is provided with a third side surface and a fourth side surface which is used for being meshed and connected with the air inlet camshaft gear; the third side and the fourth side are oppositely arranged;
the positioning block is arranged between the first limiting belt and the second limiting belt and is respectively abutted against the first side face and the third side face.
Optionally, a surface of the positioning block abutting against the first side surface is gradually inclined downwards; and the surfaces of the positioning blocks, which are abutted against the third side surfaces, are gradually inclined downwards.
Optionally, a surface of the positioning block, which is abutted against the first side surface, is an arc surface; the surface of the positioning block, which is abutted against the third side surface, is an arc surface.
Optionally, the second side surface is provided with a plurality of first meshing grooves matched with the exhaust camshaft gear; and a plurality of second meshing grooves matched with the intake camshaft gear are arranged on the fourth side.
Optionally, the positioning device further comprises an adjusting assembly capable of adjusting the position of the positioning block up and down; the adjusting component is arranged on the positioning block.
Optionally, the adjusting assembly comprises an adjusting rod connected to the positioning block and an adjusting nut screwed on the adjusting rod; the adjusting nut is connected with the upper surface of the positioning block.
Optionally, the axis of the adjusting rod coincides with the axis of the positioning block.
Optionally, the adjusting rod is inserted in the center of the positioning block.
In order to solve the same technical problem, the invention also provides a timing positioning method of the engine camshaft, which comprises the following steps:
connecting a first limit belt to the gear teeth of the exhaust camshaft gear;
connecting a second limiting belt to the gear teeth of the air inlet camshaft gear;
placing a positioning block between the first limiting belt and the second limiting belt, wherein the positioning block is respectively abutted against a first side surface of the first limiting belt and a third side surface of the second limiting belt;
and downwards pressing the positioning block until the positioning block is clamped between the first limiting belt and the second limiting belt.
Optionally, in the step of pressing down the positioning block, the method includes:
and screwing an adjusting nut, wherein the adjusting nut drives the positioning block to move downwards on the adjusting rod.
Compared with the prior art, the timing positioning device and the timing positioning method for the engine camshaft have the beneficial effects that: the exhaust camshaft gear is connected to the exhaust camshaft gear through the first limiting belt, so that the positions of the first limiting belt and the exhaust camshaft gear are relatively fixed. In a similar way, the second limiting belt is connected to the air inlet cam shaft gear, so that the positions of the second limiting belt and the air inlet cam shaft gear are relatively fixed. The first limiting belt and the second limiting belt are clamped by the positioning blocks which are respectively abutted against the first limiting belt and the second limiting belt, so that the exhaust cam shaft gear and the intake cam shaft gear are relatively fixed in position, a timing belt is convenient to replace by a worker, and the relative phase positions of the exhaust cam shaft gear, the intake cam shaft gear and the crankshaft gear are always kept accurate. The timing positioning device and method for the engine camshaft are simple in structure, convenient to operate, low in cost, capable of achieving fixing of the engine camshaft, convenient for after-sale maintenance of the engine and high in popularization value.
Drawings
FIG. 1 is a schematic diagram of a prior art timing belt drive system for an engine;
FIG. 2 is a perspective view of a prior art exhaust camshaft gear;
FIG. 3 is a perspective view of a prior art intake camshaft gear;
FIG. 4 is a schematic structural view of a prior art fixed camshaft gear;
FIG. 5 is a schematic structural view of an engine camshaft timing positioning device according to an embodiment of the present invention;
FIG. 6 is a schematic view of the connection structure of the engine camshaft timing positioning device of the embodiment of the invention installed on a certain engine timing toothed belt transmission system;
in the figure, 1, timing tension pulley; 2. a water pump belt wheel; 3. an exhaust camshaft gear; 3a, an inner side flange; 4. an intake camshaft gear; 4a, an outer side rib; 5. a crankshaft timing gear; 6. a timing idler; 7. a timing belt; 8. a bolt; 9. fixing the tooling plate; 10. a camshaft cover; 11. a first limit belt; 12. a second limit belt; 13. positioning blocks; 14. an adjustment assembly; 141. adjusting a rod; 142. and adjusting the nut.
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 should be understood that the terms used in the present invention are used in the description of the present invention, and it should be understood that the terms "center", "upper", "lower", "vertical", "bottom", and the like used in the present invention indicate the orientations and positional relationships based on the drawings, which are merely for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
It should be understood that the terms "upper" and "lower" are used herein with reference to the center of the engine timing belt drive system; wherein "up" means that the center of the engine timing toothed belt drive system points in the direction of the line between the exhaust camshaft gear and the intake camshaft gear; "lower" means that the center of the engine timing belt drive system points in the direction of the crankshaft timing gears and away from the "up" direction.
It should be understood that the terms "first", "second", etc. are used herein to describe various information, but the information should not be limited to these terms, which are only used to distinguish one type of information from another. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 5 to 6, an engine camshaft timing positioning device according to a preferred embodiment of the present invention includes a first stopper belt 11, a second stopper belt 12, and a positioning block 13; the first spacing belt 11 is provided with a first side surface and a second side surface which are opposite; the second side is used for meshing connection with the exhaust camshaft gear 3. The second stop band 12 has opposite third and fourth sides; the fourth side is used for meshing connection with the intake camshaft gear 4. The positioning block 13 is disposed between the first position-limiting band 11 and the second position-limiting band 12 and is abutted to the first side surface and the third side surface, respectively.
The first limiting belt 11 and the second limiting belt 12 in this embodiment are both belts and can be obtained by cutting waste belts. The second side of the first stopper belt 11 engages with the tooth on the exhaust camshaft gear 3, and the first stopper belt 11 abuts against the inner rib 3a on the exhaust camshaft gear 3 to prevent the first stopper belt 11 from slipping off the exhaust camshaft gear 3. Similarly, the fourth side of the second limit belt 12 is engaged with the engaging teeth on the intake camshaft gear 4, and the second limit belt 12 abuts against the outer flange 4a on the intake camshaft gear 4 to prevent the second limit belt 12 from slipping off the intake camshaft gear 4.
Based on above-mentioned technical scheme, when needing fixed exhaust camshaft gear 3 and intake camshaft gear 4's relative position, connect first spacing area 11 on exhaust camshaft gear 3 for the second side meshes with exhaust camshaft gear 3's rodent. At this time, the exhaust camshaft gear 3 and the first stopper belt 11 are relatively fixed in position, and the exhaust camshaft gear 3 moves with the movement of the first stopper belt 11. The second stopper belt 12 is attached to the intake camshaft gear 4 such that the fourth side surface is engaged with the mesh teeth of the intake camshaft gear 4. At this time, the intake camshaft gear 4 and the second stopper belt 12 are relatively fixed in position, and the intake camshaft gear 4 moves with the movement of the second stopper belt 12. Then, the positioning block 13 is placed between the first limiting belt 11 and the second limiting belt 12, so that the positioning block 13 is respectively abutted to the first side surface of the first limiting belt 11 and the second side surface of the second limiting belt 12, the first limiting belt 11 and the second limiting belt 12 can be clamped along with the insertion of the positioning block 13, the positions of the first limiting belt 11 and the second limiting belt 12 are relatively fixed, and the exhaust camshaft gear 3 and the intake camshaft gear 4 are fixed. After the timing positioning device of the engine camshaft is arranged between two cam gears, the relative position between the exhaust camshaft gear 3 and the intake camshaft gear 4 can be ensured to be fixed and not to rotate any more. The timing tension pulley 1 can be unscrewed and the timing belt 7 can be replaced, the exhaust camshaft gear 3 and the intake camshaft gear 4 can be ensured not to rotate in the process, the relative phases of the two camshaft gears and the crankshaft timing gear 5 are always kept accurate, and the accurate gas distribution phase of the engine is ensured. The timing positioning device for the engine camshaft does not need to use a threaded hole in the camshaft cover cap 10, is low in installation cost and is convenient and quick to operate. And the timing positioning device of the engine camshaft comprises two belts and a positioning block 13, has simple structure and small volume, and is suitable for the mass automobile after-sale service stations. The timing positioning device of the engine camshaft is applied to an engine with a timing belt transmission system.
Wherein, the surface of the positioning block 13 abutted against the first side surface is gradually inclined downwards; the surface of the positioning block 13 abutting against the third side surface is gradually inclined downwards. The locating block 13 and the face of two camshaft gear looks butt all downward sloping, is favorable to the staff when installation engine camshaft positioner in right time, pushes down locating block 13 gradually for locating block 13 respectively with exhaust camshaft gear 3 and intake camshaft gear 4 chucking, thereby make exhaust camshaft gear 3 and intake camshaft gear 4's position relatively fixed. The surface of the positioning block 13, which is abutted against the first side surface, is a cambered surface; the face of locating piece 13 and third side butt is the cambered surface, is favorable to the staff to push down locating piece 13 for locating piece 13 can be between first spacing area 11 and second spacing area 12 landing. If the surface of the positioning block 13 abutted against the first side surface and the surface of the positioning block 13 abutted against the third side surface are both inclined surfaces, in the process of pressing the positioning block 13 downwards, the positioning block 13 is easily rubbed with the first limiting belt 11 and the second limiting belt 12, so that the first side surface and the third side surface are worn, and the service lives of the first limiting belt 11 and the second limiting belt 12 are reduced. The surface of the positioning block 13 abutting against the first side surface and the surface abutting against the third side surface in this embodiment may be the same curved surface.
Specifically, the second side surface is provided with a plurality of first meshing grooves which are in positioning fit with the meshing teeth on the exhaust camshaft gear 3; and a plurality of second meshing grooves which are matched with the meshing teeth of the air inlet camshaft gear 4 in a positioning way are arranged on the fourth side. Through setting up the meshing groove, be favorable to first spacing area 11 and exhaust camshaft gear 3 to be connected firmly, second spacing area 12 and intake camshaft gear 4 are connected firmly.
If the staff bare-handed locating piece 13 of pushing down, though can realize also chucking between locating piece 13 and two camshafts, can not realize the fine setting to locating piece 13 in vertical side, adjust the degree of difficulty and increase. In order to solve the problem, the timing positioning device of the engine camshaft further comprises an adjusting component 14 which can adjust the position of the positioning block 13 up and down; an adjustment assembly 14 is provided on the positioning block 13. Through adjusting assembly 14, can cross the realization and finely tune locating piece 13 from top to bottom, guarantee that locating piece 13 is respectively with first spacing area 11 and the tight chucking in position of second spacing area 12. As shown in fig. 5, the adjusting assembly 14 includes an adjusting rod 141 vertically connected to the positioning block 13 and an adjusting nut 142 threadedly coupled to the adjusting rod 141; adjusting nut 142 is coupled to the upper surface of positioning block 13. By screwing the adjusting nut 142, the adjusting nut 142 rotates and moves up and down on the adjusting rod 141, and can drive the positioning block 13 connected with the bottom of the adjusting nut 142 to rotate and move up and down, so that fine adjustment of the position of the positioning block 13 in the vertical direction is realized. The adjustment lever 141 in this embodiment is a stud. The adjustment nut 142 and the stud are standard components. The axis of the adjusting rod 141 coincides with the axis of the positioning block 13, so that the adjusting rod 141 is vertically inserted and fixed on the positioning block 13, and the adjusting nut 142 can vertically move up and down. The adjusting rod 141 penetrates through the center of the positioning block 13, so that the situation that the heights of the two sides of the positioning block 13 are inconsistent and the first limiting belt 11 and the second limiting belt 12 cannot be clamped well is avoided.
In order to solve the same technical problem, the invention also provides a timing positioning method of the engine camshaft, which comprises the following steps:
connecting the first limit belt 11 to the gear teeth of the exhaust camshaft gear 3 so that the second side face is in meshed connection with the meshed teeth of the exhaust camshaft gear 3;
connecting the second limit belt 12 to the gear teeth of the intake camshaft gear 4, so that the fourth side surface is meshed with the meshing teeth of the intake camshaft gear 4;
placing a positioning block 13 between the first limiting belt 11 and the second limiting belt 12, wherein the positioning block 13 is respectively abutted against a first side surface of the first limiting belt 11 and a third side surface of the second limiting belt 12;
the positioning block 13 is pressed downwards until the positioning block 13 is clamped between the first and second stop belts 11, 12.
The first stopper belt 11 is preloaded on the exhaust camshaft gear 3. The second stopper belt 12 is preloaded on the intake camshaft gear 4 such that the second stopper belt 12 is preloaded in engagement with the intake camshaft gear 4. Then, the positioning block 13 is placed between the two sections of belts, and the positioning block 13 moves downwards to tightly press the two belts on the cam shaft gear. Because the camshaft gear and the camshaft are connected into a whole through the lock pin, the camshaft is fixed at the moment, and can be kept still in the process of assembling and disassembling the timing belt, so that the accuracy of the gas distribution phase of the engine is ensured.
More specifically, in the step of pressing down the positioning block 13, it includes: the adjusting nut 142 is screwed, and the adjusting nut 142 drives the positioning block 13 to move downwards on the adjusting rod 141, so that the position of the positioning block 13 can be finely adjusted, the positioning block 13 is ensured to be respectively attached to the second side surface and the fourth side surface, and the position fixation between the positioning block 13 and the first limiting belt 11 and the second limiting belt 12 is realized.
The working process of the invention is as follows: first, the first stopper belt 11 is preloaded on the exhaust camshaft gear 3 at an accurate timing position by rotating the engine crankshaft so that the first meshing grooves on the second side face mesh with the meshing teeth on the exhaust camshaft gear 3. The second stopper belt 12 is placed on the exhaust camshaft gear 3 such that the second meshing groove on the fourth side meshes with the meshing teeth on the intake camshaft gear 4. After the positions of the first position-limiting belt 11 and the exhaust camshaft gear 3 are relatively fixed and the positions of the second position-limiting belt 12 and the intake camshaft gear 4 are relatively fixed, the positioning block 13 is placed between the first position-limiting belt 11 and the second position-limiting belt 12. And the adjusting nut 142 is screwed, so that the adjusting nut 142 drives the positioning block 13 to move downwards on the adjusting rod 141, the positioning block 13 is enabled to be respectively and tightly abutted against the first side surface and the third side surface, finally, the positioning block 13 is stably pressed on the first limiting belt 11 and the second limiting belt 12, the first limiting belt 11 is pressed on the exhaust camshaft gear 3, the second limiting belt 12 is pressed on the intake camshaft, and the exhaust camshaft gear 3 and the intake camshaft gear 4 are ensured to be fixed. When the timing positioning device of the engine camshaft needs to be removed, the adjusting nut 142 is screwed upwards, so that the positioning block 13 moves upwards, gradually loosens with the first limiting belt 11 and the second limiting belt 12, and then the positioning block 13, the first limiting belt 11 and the second limiting belt 12 are taken away.
In summary, embodiments of the present invention provide an engine camshaft timing positioning apparatus and method, which connect to an exhaust camshaft gear through a first position-limiting belt, so that the positions of the first position-limiting belt and the exhaust camshaft gear are relatively fixed. In a similar way, the second limiting belt is connected to the air inlet cam shaft gear, so that the positions of the second limiting belt and the air inlet cam shaft gear are relatively fixed. The first limiting belt and the second limiting belt are clamped by the positioning blocks which are respectively abutted against the first limiting belt and the second limiting belt, so that the exhaust cam shaft gear and the intake cam shaft gear are relatively fixed in position, a timing belt is convenient to replace by a worker, and the relative phase positions of the exhaust cam shaft gear, the intake cam shaft gear and the crankshaft gear are always kept accurate. The timing positioning device and method for the engine camshaft are simple in structure, convenient to operate, low in cost, capable of achieving fixing of the engine camshaft, convenient for after-sale maintenance of the engine and high in popularization value.
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 (10)
1. The timing positioning device for the engine camshaft is characterized by comprising a first limiting belt, a second limiting belt and a positioning block;
the first limiting belt is provided with a first side surface and a second side surface which is used for being meshed and connected with the exhaust camshaft gear; the first side surface and the second side surface are oppositely arranged;
the second limiting belt is provided with a third side surface and a fourth side surface which is used for being meshed and connected with the air inlet camshaft gear; the third side and the fourth side are oppositely arranged;
the positioning block is arranged between the first limiting belt and the second limiting belt and is respectively abutted against the first side face and the third side face.
2. The engine camshaft timing positioning device of claim 1, wherein the face of the positioning block abutting the first side face is gradually inclined downward; and the surfaces of the positioning blocks, which are abutted against the third side surfaces, are gradually inclined downwards.
3. The engine camshaft timing positioning device of claim 2, wherein the face of the positioning block abutting the first side face is an arc face; the surface of the positioning block, which is abutted against the third side surface, is an arc surface.
4. The engine camshaft timing positioning device of claim 1, wherein the second side is provided with a plurality of first meshing grooves that are engaged with the exhaust camshaft gear; and a plurality of second meshing grooves matched with the intake camshaft gear are arranged on the fourth side.
5. The engine camshaft timing positioning device of claim 1 further comprising an adjustment assembly capable of adjusting the position of the positioning block up and down; the adjusting component is arranged on the positioning block.
6. The engine camshaft timing positioning device of claim 5 wherein the adjustment assembly includes an adjustment rod connected to the positioning block and an adjustment nut threadedly coupled to the adjustment rod; the adjusting nut is connected with the upper surface of the positioning block.
7. The engine camshaft timing positioning device of claim 6 wherein the axis of the adjustment rod coincides with the axis of the positioning block.
8. The engine camshaft timing positioning device of claim 5, wherein the adjusting rod is inserted through the center of the positioning block.
9. An engine camshaft timing positioning method, characterized by comprising the steps of:
connecting a first limit belt to the gear teeth of the exhaust camshaft gear;
connecting a second limiting belt to the gear teeth of the air inlet camshaft gear;
placing a positioning block between the first limiting belt and the second limiting belt, wherein the positioning block is respectively abutted against a first side surface of the first limiting belt and a third side surface of the second limiting belt;
and downwards pressing the positioning block until the positioning block is clamped between the first limiting belt and the second limiting belt.
10. An engine camshaft timing positioning method, characterized by comprising, in the step of pressing down the positioning block:
and screwing an adjusting nut, wherein the adjusting nut drives the positioning block to move downwards on the adjusting rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110494948.7A CN113107629B (en) | 2021-05-07 | 2021-05-07 | Timing positioning device and method for engine camshaft |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110494948.7A CN113107629B (en) | 2021-05-07 | 2021-05-07 | Timing positioning device and method for engine camshaft |
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| CN113107629A true CN113107629A (en) | 2021-07-13 |
| CN113107629B CN113107629B (en) | 2022-06-07 |
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| CN103802045A (en) * | 2012-11-07 | 2014-05-21 | 广西玉柴机器股份有限公司 | Crankshaft timing gear installing and positioning mechanism |
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| CN203655376U (en) * | 2013-11-19 | 2014-06-18 | 浙江吉利汽车研究院有限公司 | Camshaft and timing and positioning tool for assembling same |
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| CN107627088A (en) * | 2017-10-26 | 2018-01-26 | 银川合宜科技有限公司 | Timing gears positioner and timing gears assembly equipment |
| CN207256133U (en) * | 2017-09-05 | 2018-04-20 | 广西玉柴机器股份有限公司 | A kind of camshaft timing gear positioning pressing tool |
| CN207439682U (en) * | 2017-11-21 | 2018-06-01 | 浙江吉利罗佑发动机有限公司 | A kind of engine timing detection device |
| CN108386246A (en) * | 2018-01-31 | 2018-08-10 | 东风汽车集团有限公司 | A kind of gas distribution phase of engine assembly tooling and method |
| CN109026251A (en) * | 2018-07-05 | 2018-12-18 | 昆明云内动力股份有限公司 | A kind of gear of engine and the compound timing gear of chain |
| CN109098813A (en) * | 2018-08-06 | 2018-12-28 | 东风柳州汽车有限公司 | Improve the device of automobile engine port timing angular accuracy |
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| CN214373347U (en) * | 2021-03-19 | 2021-10-08 | 中国第一汽车股份有限公司 | Timing system measuring device |
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