CN113898437A - Engine and wheel axle buffer mechanism - Google Patents
Engine and wheel axle buffer mechanism Download PDFInfo
- Publication number
- CN113898437A CN113898437A CN202111294474.8A CN202111294474A CN113898437A CN 113898437 A CN113898437 A CN 113898437A CN 202111294474 A CN202111294474 A CN 202111294474A CN 113898437 A CN113898437 A CN 113898437A
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- engine
- camshaft
- cylinder head
- buffer
- engine cylinder
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- 230000007246 mechanism Effects 0.000 title claims abstract description 23
- 230000003139 buffering effect Effects 0.000 claims abstract description 56
- 230000006837 decompression Effects 0.000 claims description 39
- 230000005540 biological transmission Effects 0.000 claims description 33
- 230000000903 blocking effect Effects 0.000 claims description 16
- 230000005484 gravity Effects 0.000 claims description 3
- 238000010030 laminating Methods 0.000 claims description 2
- 230000002159 abnormal effect Effects 0.000 abstract description 7
- 238000009434 installation Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 8
- 230000009467 reduction Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 230000003044 adaptive effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
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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
- F01L1/022—Chain drive
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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
- F01L1/12—Transmitting gear between valve drive and valve
- F01L1/18—Rocking arms or levers
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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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- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
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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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
- F16F15/067—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
The invention relates to an engine and an axle buffer mechanism. The wheel axle buffer mechanism comprises: the mounting and the buffering piece are mounted on the mounting base at intervals, the mounting base is used for being mounted on an engine cylinder head through the mounting piece, the buffering piece stretches into the inside of the engine cylinder head, and the buffering piece is used for stretching into the camshaft wheel set to buffer and conflict the bearing end inside the engine cylinder head. When the engine during operation, camshaft wheelset is located one of engine cylinder head outside and serves and is equipped with the sprocket, through engine chain and sprocket drive, the engine chain can exert down force to the sprocket, and the camshaft wheelset is located the inside one end of engine cylinder head and can produces the upwarp, can cushion the conflict to camshaft wheelset through the bolster to avoid camshaft wheelset upwarp and engine cylinder head to take place the striking, avoided camshaft wheelset and engine cylinder head friction to produce the abnormal sound.
Description
Technical Field
The invention relates to the technical field of engine assembly, in particular to an engine and an axle buffering mechanism.
Background
When the engine is assembled, the camshaft wheel set is arranged on the engine cylinder head, namely, one end of the camshaft wheel set is in transmission fit with the chain through the chain wheel, and the other end of the camshaft wheel set is positioned inside the engine cylinder head. At this moment, the chain drives the sprocket and can applys the pulling force to the camshaft wheelset when rotating, and the camshaft wheelset is located the inside one end of engine cylinder head and can upwarps in the meantime to lead to the camshaft wheelset can take place the striking with the engine cylinder head when rotating, produce the abnormal sound.
Disclosure of Invention
Therefore, it is necessary to provide an engine and a wheel axle buffering mechanism for solving the problem that the cam wheel set collides with the engine cylinder head during rotation to generate abnormal noise.
A wheel axle buffering mechanism. The wheel axle buffer mechanism comprises: the mounting and the buffering piece are mounted on the mounting base at intervals, the mounting base is used for being mounted on an engine cylinder head through the mounting piece, the buffering piece stretches into the inside of the engine cylinder head, and the buffering piece is used for stretching into the camshaft wheel set to buffer and conflict the bearing end inside the engine cylinder head.
The utility model provides an engine, includes shaft buffer gear, still include, engine cylinder head, camshaft wheelset, engine sprocket and engine chain, the camshaft wheelset is installed on the engine cylinder head, the engine sprocket is installed camshaft wheelset orientation the outside one end of engine cylinder head, the engine chain with engine sprocket transmission cooperation, shaft buffer gear installs on the engine cylinder head, just shaft buffer gear be used for with the camshaft wheelset stretches into the inside one end buffering of engine cylinder head is contradicted.
In one embodiment, the engine further comprises a support seat, the support seat is spliced or integrally formed with the engine cylinder head, the camshaft wheel set is mounted on the engine cylinder head through the support seat, and the axle buffering mechanism is mounted on the support seat.
In one embodiment, the mounting base comprises a first splicing plate and a second splicing plate, one side of the first splicing plate is fixedly matched with one side of the second splicing plate, a mounting included angle is reserved between the first splicing plate and the second splicing plate, the first splicing plate and the second splicing plate are all used for abutting against the supporting seat in a laminating mode, a first fixing hole which is fixedly matched with the fixing piece is formed in the first splicing plate, a second fixing hole which is fixedly matched with the fixing piece is formed in the supporting seat, the buffer piece is mounted towards the first splicing plate, one side of the supporting seat is provided with an assembling hole for inserting the buffer piece, and the assembling hole is formed in the supporting seat.
In one embodiment, the buffering member comprises a first buffering spring and a first buffering block, one end of the first buffering spring is connected with the first splicing plate, a gap is reserved between the first buffering spring and the fixing member, the other end of the first buffering spring extends into the supporting seat through the assembling hole and is connected with the first buffering block, and the first buffering block is in buffering and abutting contact with the camshaft wheel set.
In one embodiment, the bolster includes second buffer spring, telescopic shaft and second buffer block, the one end of telescopic shaft with first splice plate links to each other, the second buffer spring cover is established the outside of telescopic shaft, second buffer spring with leave the interval between the mounting, the other end of telescopic shaft passes through the pilot hole stretches into inside the supporting seat and with the second buffer block links to each other, just the second buffer block with the one end of second buffer spring is inconsistent, the second buffer block with camshaft wheelset buffering is contradicted.
In one of them embodiment, the engine still includes the decompression rocking arm, decompression rocking arm movably installs on the engine sprocket, be equipped with the decompression cam on the camshaft wheelset, the decompression cam includes camshaft and transmission seat, the camshaft is installed in the camshaft wheelset, the one end protrusion of camshaft the engine sprocket with the transmission seat installation cooperation, be equipped with the transfer line on the transmission seat, be equipped with on the decompression rocking arm be used for with transfer line transmission complex adaptation hole.
In one embodiment, the pressure reducing rocker arm comprises an alignment mounting portion and an arc-shaped adapting portion, one end of the alignment mounting portion is in rotating fit with the engine chain wheel, a first weight reducing portion is arranged on the alignment mounting portion along the extending direction of the alignment mounting portion, a second weight reducing portion is arranged in the arc-shaped adapting portion along the extending direction of the arc-shaped adapting portion, and the gravity center of the pressure reducing rocker arm is deviated towards the periphery of the arc-shaped adapting portion.
In one embodiment, the engine further comprises a decompression blocking piece and a fixing assembly, the decompression blocking piece is mounted on the engine chain wheel along the circumferential direction of the engine chain wheel, a swinging cavity used for the decompression rocker arm and the decompression cam to swing on the engine chain wheel is arranged on the decompression blocking piece, and the decompression blocking piece is sequentially fixedly matched with the engine chain wheel and the camshaft wheel set through the fixing assembly.
In one embodiment, the fixing assembly comprises a first fastener and a second fastener, one end of the decompression blocking piece is sequentially connected and fixed with the engine chain wheel and the camshaft wheel set through the first fastener, a fixing portion is further arranged on the decompression blocking piece, the fixing portion is attached to the wheel face of the engine chain wheel, and the fixing portion is sequentially connected and fixed with the engine chain wheel and the camshaft wheel set through the second fastener.
When the wheel axle buffering mechanism is used, the structure or the shape of the mounting base is determined according to the related structure of the engine cylinder head, so that the mounting and fixing effects of the mounting base and the engine cylinder head can be guaranteed. Then, the mounting base is fixed to the engine head by a fixing member. For example: according to the installation requirement, the fixing piece can be integrally formed with the mounting base, and the mounting base is clamped and fixed with the engine cylinder head or fixed through threads through the fixing piece. Furthermore, after the buffer piece is arranged on the mounting base, a gap is reserved between the buffer piece and the fixing piece, and by the aid of the assembling mode, the buffer space of the buffer piece on the mounting base can be increased, and the buffer effect of the buffer piece is guaranteed. At this moment, when the engine during operation, camshaft wheelset is located one of engine cylinder head outside and serves and be equipped with the sprocket, through engine chain and sprocket drive, the engine chain can exert down force to the sprocket, and the camshaft wheelset is located the inside one end of engine cylinder head and can produces the upwarp, can cushion the conflict to camshaft wheelset through the bolster to avoid camshaft wheelset upwarp and take place the striking with the engine cylinder head, avoided camshaft wheelset and engine cylinder head friction to produce the abnormal sound.
When the engine is used, the camshaft wheel set can be directly arranged on the engine cylinder head according to the installation requirement. Or can add on the engine cylinder head and establish the supporting seat, can realize fixed to the pertinence of camshaft wheelset through the supporting seat. Then, install the engine sprocket in the one end of camshaft wheelset towards engine cylinder head outside, through engine chain and engine sprocket transmission, the engine chain can exert down force to the engine sprocket, and the one end that the camshaft wheelset is located engine cylinder head inside can produce the upwarp, can cushion the conflict to the camshaft wheelset through the bolster to avoid camshaft wheelset upwarp and engine cylinder head to take place the striking, avoided camshaft wheelset and engine cylinder head friction to produce the abnormal sound.
Drawings
FIG. 1 is a schematic structural view of an axle damping mechanism;
FIG. 2 is a schematic view of a partially assembled structure of the engine and the axle damper;
FIG. 3 is a schematic diagram of an engine;
fig. 4 is a partial structural schematic diagram of the engine.
100. The mounting base comprises a mounting base body, 110, a first splicing plate, 120, a second splicing plate, 200, a fixing piece, 300, a buffering piece, 310, a first buffering piece, 320, a first buffering block, 400, an engine cylinder head, 410, a supporting seat, 500, a camshaft wheel set, 510, a pressure reducing cam, 511, a camshaft, 512, a transmission seat, 513, a transmission rod, 600, an engine chain wheel, 700, a pressure reducing rocker arm, 710, an adapting hole, 720, an alignment mounting part, 721, a first weight reducing part, 730, an arc adapting part, 731, a second weight reducing part, 800, a pressure reducing baffle, 810, a swinging cavity, 820, a fixing part, 900, a fixing component, 910, a first fastener, 920 and a second fastener.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Referring to fig. 1 and 2, in one embodiment, an axle damper mechanism includes: mounting base 100, mounting 200 and bolster 300, mounting 200 with bolster 300 interval is installed on mounting base 100, mounting base 100 passes through mounting 200 is used for installing on engine cylinder head 400, just bolster 300 stretches into inside engine cylinder head 400, bolster 300 is used for stretching into with camshaft wheelset 500 the inside bearing end buffering of engine cylinder head 400 is contradicted.
When the wheel axle buffering mechanism is used, the structure or the shape of the mounting base 100 is determined according to the related structure of the engine cylinder head 400, so that the mounting and fixing effects of the mounting base 100 and the engine cylinder head 400 can be guaranteed. Then, the mounting base 100 is fixed to the engine head 400 by the fixing member 200. For example: the fixing member 200 may be integrally formed with the mounting base 100 according to the installation requirement, and the mounting base 100 is clamped or screwed to the engine cylinder head 400 through the fixing member 200. Further, after the buffering member 300 is mounted on the mounting base 100, a gap is left between the buffering member 300 and the fixing member 200, and the above mounting manner can improve the buffering space of the buffering member 300 on the mounting base 100 and ensure the buffering effect of the buffering member 300. At this moment, when the engine during operation, camshaft wheelset 500 is located one of engine cylinder head 400 outside and serves and is equipped with the sprocket, through engine chain and sprocket drive, the engine chain can exert the holding down force to the sprocket, camshaft wheelset 500 is located the inside one end of engine cylinder head 400 and can produces and upwarp, can cushion camshaft wheelset 500 through bolster 300 and contradict to avoid camshaft wheelset 500 upwarp and take place the striking with engine cylinder head 400, avoided camshaft wheelset 500 and engine cylinder head 400 friction to produce the abnormal sound.
Referring to fig. 2 to 4, in an embodiment, an engine includes the axle buffering mechanism, and further includes an engine cylinder head 400, a camshaft wheel set 500, an engine sprocket 600, and an engine chain, where the camshaft wheel set 500 is mounted on the engine cylinder head 400, the engine sprocket 600 is mounted at an end of the camshaft wheel set 500 facing to an outside of the engine cylinder head 400, the engine chain is in driving fit with the engine sprocket 600, the axle buffering mechanism is mounted on the engine cylinder head 400, and the axle buffering mechanism is configured to buffer and collide with an end of the camshaft wheel set 500 extending into the engine cylinder head 400.
When the engine is used, the camshaft wheel set 500 can be directly mounted on the engine cylinder head 400 according to the mounting requirement. Or the engine cylinder head 400 may be additionally provided with a support seat 410, and the support seat 410 may be used to achieve targeted fixation of the camshaft wheel set 500. Then, install engine sprocket 600 in the one end of camshaft wheelset 500 towards engine cylinder head 400 outside, through engine chain and engine sprocket 600 transmission, engine chain can exert the holding down force to engine sprocket 600, and camshaft wheelset 500 is located the inside one end of engine cylinder head 400 and can produce the upwarp, can cushion camshaft wheelset 500 through bolster 300 and contradict to avoid camshaft wheelset 500 upwarp and engine cylinder head 400 to take place the striking, avoided camshaft wheelset 500 and engine cylinder head 400 friction to produce the abnormal sound.
In one embodiment, as shown in fig. 3, the engine further includes a support base 410, the support base 410 is formed by splicing or integrally forming with the engine cylinder head 400, the camshaft pulley set 500 is mounted on the engine cylinder head 400 through the support base 410, and the axle buffering mechanism is mounted on the support base 410. Specifically, the mounting position of the support base 410 on the engine cylinder head 400 and the structure of the support base 410 itself are determined according to the size or shape of the camshaft pulley set 500. The camshaft wheel set 500 is fixed through the support base 410, and the action effect of the camshaft wheel set 500 on the engine cylinder head 400 can be effectively guaranteed. Further, when the axle buffer mechanism is mounted on the support base 410, the axle buffer mechanism can be attached to the end face and the side face (the side face adjacent to the end face) of the support base 410 at the same time, so that the attachment effect of the axle buffer mechanism to the support base 410 is effectively ensured.
Referring to fig. 1 to 3, in an embodiment, the mounting base 100 includes a first splice plate 110 and a second splice plate 120, one side of the first splice plate 110 is fixedly matched with one side of the second splice plate 120, an installation included angle is left between the first splice plate 110 and the second splice plate 120, the first splice plate 110 and the second splice plate 120 are all used for abutting against the support seat 410, a first fixing hole used for fixedly matching with the fixing member 200 is formed in the first splice plate 110, a second fixing hole used for fixedly matching with the fixing member 200 is formed in the support seat 410, the buffer member 300 is installed on the first splice plate 110 facing to the one side of the support seat 410, and an assembly hole used for inserting the buffer member 300 is formed in the support seat 410. Specifically, the first splice plate 110 and the second splice plate 120 may be integrally formed or spliced (welded), and an included angle between the first splice plate 110 and the second splice plate 120 may be determined according to an included angle between the end surface of the supporting seat 410 and an adjacent side surface, so that the first splice plate 110 may be sufficiently attached to the end surface of the supporting seat 410, and the second splice plate 120 may be sufficiently attached to the side surface of the supporting seat 410. Further, the fixing member 200 is a bolt or a snap. The fixing effect of the mounting base 100 on the supporting seat 410 can be effectively ensured by the fixing member 200. In addition, according to the installation requirement, the number of the fixing members 200 used may also be more than one, and the first splicing plate 110 and the second splicing plate 120 may be fixedly matched with the fixing members 200. Furthermore, the buffering member 300 may be a buffering spring or a rubber strip, and the buffering member 300 collides with the cam shaft wheel set 500 to buffer the cam shaft wheel set 500 when tilting up, so as to avoid collision between the cam shaft wheel set 500 and the engine cylinder head 400.
Referring to fig. 1 to 3, in an embodiment, the buffering member 300 includes a first buffering spring and a first buffering block 320, one end of the first buffering spring is connected to the first splicing plate 110, a space is left between the first buffering spring and the fixing member 200, the other end of the first buffering spring extends into the supporting seat 410 through the assembling hole and is connected to the first buffering block 320, and the first buffering block 320 is in buffering contact with the camshaft pulley set 500. Specifically, when camshaft wheelset 500 upwarps and removes, camshaft wheelset 500 can be inconsistent with first buffer block 320 earlier, and first buffer block 320 passes power to first buffer spring, and first buffer spring carries out corresponding elastic deformation to just having realized blockking to camshaft wheelset 500 upwarps and removes, having avoided camshaft 511 subassembly upwarps and produces the conflict damage with engine cylinder head 400. Further, the other end of the first buffer spring extends into the supporting seat 410 through the assembling hole, so that the first buffer spring can stretch along the axial direction of the first buffer spring, and the first buffer spring is prevented from being bent locally.
In one embodiment, the buffering member 300 includes a second buffer spring, a telescopic shaft and a second buffer block, one end of the telescopic shaft is connected to the first splicing plate 110, the second buffer spring is sleeved outside the telescopic shaft, the second buffer spring is spaced from the fixing member 200, the other end of the telescopic shaft passes through the assembly hole, the assembly hole extends into the inside of the supporting seat 410 and is connected to the second buffer block, the second buffer block is abutted to one end of the second buffer spring, and the second buffer block is abutted to the camshaft wheel set 500. Specifically, when camshaft wheelset 500 appears upwarping when removing, camshaft wheelset 500 can be inconsistent with the second buffer block earlier, and the second buffer block can drive the telescopic shaft shrink, and after the telescopic shaft shrinks to a certain extent, the second buffer block can drive the shrink of second buffer spring to just having realized blockking to camshaft wheelset 500 upwarping removal, having avoided camshaft 511 subassembly upwarping to produce conflict damage with engine cylinder head 400. Further, by means of the telescopic shaft, the buffer member 300 can be effectively guaranteed to be deformed in a buffering mode according to the preset direction.
With reference to fig. 2 to 4, in an embodiment, the engine further includes a pressure reducing rocker arm 700, the pressure reducing rocker arm 700 is movably mounted on the engine sprocket 600, the camshaft set 500 is provided with a pressure reducing cam 510, the pressure reducing cam 510 includes a camshaft 511 and a transmission base 512, the camshaft 511 is mounted in the camshaft set 500, one end of the camshaft 511 protrudes out of the engine sprocket 600 and is in installation fit with the transmission base 512, the transmission base 512 is provided with a transmission rod 513, and the pressure reducing rocker arm 700 is provided with an adapting hole 710 for transmission fit with the transmission rod 513. Specifically, the transmission base 512 is driven to rotate by the camshaft 511, and the transmission base 512 extends into the fitting hole 710 by using the transmission rod 513, so that the transmission matching of the transmission base 512 and the pressure reducing rocker arm 700 is realized. Further, when the adaptive hole 710 is formed, the radian of the hole wall of the adaptive hole 710 can be determined according to the actual swing radian of the pressure reducing rocker arm 700, the above embodiment can effectively ensure the transmission contact effect of the transmission rod 513 and the pressure reducing rocker arm 700, and avoid the situation that the transmission rod 513 and the pressure reducing rocker arm 700 are stuck or the situation that the local friction force at the joint (transmission part) of the transmission rod 513 and the pressure reducing rocker arm 700 is large, so that the situation that the large acting force is transmitted from one end of the camshaft wheel set 500, which is provided with the engine sprocket 600, to the other end of the camshaft wheel set 500 can be reduced.
As shown in fig. 2 to 4, in an embodiment, the pressure reducing rocker arm 700 includes an alignment mounting portion 720 and an arc-shaped adapting portion 730, one end of the alignment mounting portion 720 is rotatably engaged with the engine sprocket 600, a first weight-reducing portion 721 is formed on the alignment mounting portion 720 along an extending direction of the alignment mounting portion 720, a second weight-reducing portion 731 is formed in the arc-shaped adapting portion 730 along the extending direction of the arc-shaped adapting portion 730, and a center of gravity of the pressure reducing rocker arm 700 is offset toward an outer periphery of the arc-shaped adapting portion 730. Specifically, the first weight-reducing portion 721 and the second weight-reducing portion 731 are weight-reducing cavities or weight-reducing slots. The size of the decompression rocker arm 700 is determined according to the size and shape of the engine sprocket 600, namely the length and the shape of the alignment installation part 720 are included; the length, arc, etc. of the arcuate adapter 730. When the alignment mounting portion 720 is rotationally engaged with the engine sprocket 600, for example: through adding on engine sprocket 600 and establishing the rotation post, the cooperation is established with the rotation post rotationally cover to counterpoint installation department 720, can be through adding on the engine and establish the rotation that resets of reset torsional spring in order to realize counterpointing installation department 720 simultaneously. Further, when the engine operates, the engine sprocket 600 rotates and generates centrifugal force, and the decompression rocker arm 700 performs centrifugal rotation under the action of the centrifugal force, so that the blockage of the engine valve by the decompression rocker arm 700 is released. When the engine stops working, the centrifugal force of the engine chain wheel 600 disappears, and the decompression rocker arm 700 can reset and rotate under the action of the tension of the torsion spring, so that the engine valve is shielded. Compared with the conventional solid decompression rocker arm 700, the decompression rocker arm 700 has the advantages that the first weight-reducing portion 721 is arranged on the alignment installation portion 720, the second weight-reducing portion 731 is arranged on the arc-shaped adapting portion 730, the weight of the decompression rocker arm 700 can be effectively reduced, and the large vibration influence on the camshaft wheel set 500 in the swinging process of the decompression rocker arm 700 is reduced.
Referring to fig. 3 and 4, in an embodiment, the engine further includes a decompression flap 800 and a fixing assembly 900, the decompression flap 800 is mounted on the engine sprocket 600 along the circumferential direction of the engine sprocket 600, a swing cavity 810 for the decompression rocker arm 700 and the decompression cam 510 to swing on the engine sprocket 600 is provided on the decompression flap 800, and the decompression flap 800 is sequentially fixedly engaged with the engine sprocket 600 and the camshaft wheel set 500 through the fixing assembly 900. The fixing assembly 900 comprises a first fastener 910 and a second fastener 920, one end of the decompression blocking sheet 800 is sequentially connected and fixed with the engine chain wheel 600 and the camshaft wheel set 500 through the first fastener 910, a fixing portion 820 is further arranged on the decompression blocking sheet 800, the fixing portion 820 is attached to the wheel surface of the engine chain wheel 600, and the fixing portion 820 is sequentially connected and fixed with the engine chain wheel 600 and the camshaft wheel set 500 through the second fastener 920. Specifically, the pressure reducing baffle 800 is used to assist in fixing the pressure reducing rocker arm 700, the first fastener 910 and the second fastener 920 are buckles or bolts, and the fixing portion 820 is a plate or a rod. The fixing portion 820 is integrally formed or joined with the pressure reduction baffle 800. Further, after one end of the pressure reduction baffle 800 is sequentially connected and fixed with the engine sprocket 600 and the camshaft wheel set 500 and the swing cavity 810 is opened on the pressure reduction baffle 800, the middle part of the pressure reduction baffle 800 is designed as a fixing part 820, for example: the pressure reduction stopper 800 is bent to form the fixing portion 820. After the decompression blocking piece 800 is installed on the engine sprocket 600, the fixing part 820 is fixedly attached to the surface of the engine sprocket 600, so that the installation effect of the decompression blocking piece 800 on the engine sprocket 600 is effectively guaranteed.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A wheel axle cushioning mechanism, said wheel axle cushioning mechanism comprising: the mounting and the buffering piece are mounted on the mounting base at intervals, the mounting base is used for being mounted on an engine cylinder head through the mounting piece, the buffering piece stretches into the inside of the engine cylinder head, and the buffering piece is used for stretching into the camshaft wheel set to buffer and conflict the bearing end inside the engine cylinder head.
2. An engine, characterized by, including the axle buffer gear of claim 1, further comprising an engine cylinder head, a camshaft wheel set, an engine sprocket and an engine chain, wherein the camshaft wheel set is installed on the engine cylinder head, the engine sprocket is installed at one end of the camshaft wheel set facing to the outside of the engine cylinder head, the engine chain is in transmission fit with the engine sprocket, the axle buffer gear is installed on the engine cylinder head, and the axle buffer gear is used for buffering and abutting with one end of the camshaft wheel set extending into the inside of the engine cylinder head.
3. The engine of claim 2, further comprising a support base, wherein the support base is integrally formed with or spliced to the engine cylinder head, the camshaft wheel set is mounted on the engine cylinder head through the support base, and the axle buffering mechanism is mounted on the support base.
4. The engine according to claim 3, wherein the mounting base comprises a first splice plate and a second splice plate, one side of the first splice plate is fixedly matched with one side of the second splice plate, a mounting included angle is reserved between the first splice plate and the second splice plate, the first splice plate and the second splice plate are both used for abutting against the supporting seat in a laminating manner, a first fixing hole for fixedly matching with the fixing member is formed in the first splice plate, a second fixing hole for fixedly matching with the fixing member is formed in the supporting seat, the buffer member is mounted on one surface of the first splice plate facing the supporting seat, and an assembling hole for inserting the buffer member is formed in the supporting seat.
5. The engine of claim 4, wherein the buffer member comprises a first buffer spring and a first buffer block, one end of the first buffer spring is connected to the first splice plate, a space is left between the first buffer spring and the fixing member, the other end of the first buffer spring extends into the support seat through the assembly hole and is connected to the first buffer block, and the first buffer block is in buffer contact with the camshaft pulley set.
6. The engine of claim 4, wherein the buffer member includes a second buffer spring, a telescopic shaft, and a second buffer block, one end of the telescopic shaft is connected to the first splice plate, the second buffer spring is sleeved outside the telescopic shaft, a space is left between the second buffer spring and the fixing member, the other end of the telescopic shaft extends into the support seat through the assembly hole and is connected to the second buffer block, the second buffer block abuts against one end of the second buffer spring, and the second buffer block abuts against the cam shaft wheel set.
7. The engine of claim 2, further comprising a pressure reducing rocker arm movably mounted on the engine sprocket, wherein a pressure reducing cam is disposed on the camshaft wheel set, the pressure reducing cam comprises a camshaft and a transmission seat, the camshaft is mounted in the camshaft wheel set, one end of the camshaft protrudes out of the engine sprocket and is in fit with the transmission seat, the transmission seat is provided with a transmission rod, and the pressure reducing rocker arm is provided with a fitting hole for fitting with the transmission rod in a transmission manner.
8. The engine of claim 7, wherein the pressure reducing rocker arm includes an alignment mounting portion and an arc-shaped adapting portion, one end of the alignment mounting portion is rotatably fitted to the engine sprocket, a first weight reducing portion is formed in the alignment mounting portion along an extending direction of the alignment mounting portion, a second weight reducing portion is formed in the arc-shaped adapting portion along the extending direction of the arc-shaped adapting portion, and a center of gravity of the pressure reducing rocker arm is offset toward an outer periphery of the arc-shaped adapting portion.
9. The engine of claim 7, further comprising a decompression blocking piece and a fixing component, wherein the decompression blocking piece is mounted on the engine chain wheel along the circumferential direction of the engine chain wheel, a swing cavity for the decompression rocker arm and the decompression cam to swing on the engine chain wheel is arranged on the decompression blocking piece, and the decompression blocking piece is sequentially fixedly matched with the engine chain wheel and the camshaft wheel set through the fixing component.
10. The engine of claim 9, wherein the fixing assembly comprises a first fastener and a second fastener, one end of the decompression blocking piece is sequentially connected and fixed with the engine chain wheel and the camshaft wheel set through the first fastener, a fixing portion is further arranged on the decompression blocking piece, the fixing portion is attached to the wheel surface of the engine chain wheel, and the fixing portion is sequentially connected and fixed with the engine chain wheel and the camshaft wheel set through the second fastener.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111294474.8A CN113898437A (en) | 2021-11-03 | 2021-11-03 | Engine and wheel axle buffer mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111294474.8A CN113898437A (en) | 2021-11-03 | 2021-11-03 | Engine and wheel axle buffer mechanism |
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| CN113898437A true CN113898437A (en) | 2022-01-07 |
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| CN202111294474.8A Pending CN113898437A (en) | 2021-11-03 | 2021-11-03 | Engine and wheel axle buffer mechanism |
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