CN115434778A - Novel camshaft - Google Patents
Novel camshaft Download PDFInfo
- Publication number
- CN115434778A CN115434778A CN202211260687.3A CN202211260687A CN115434778A CN 115434778 A CN115434778 A CN 115434778A CN 202211260687 A CN202211260687 A CN 202211260687A CN 115434778 A CN115434778 A CN 115434778A
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- CN
- China
- Prior art keywords
- swing arm
- novel camshaft
- camshaft
- bearing
- gas distribution
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000004323 axial length Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000009434 installation Methods 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000005489 elastic deformation Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- 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
-
- 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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
The present invention provides a novel camshaft comprising: a bearing; the gas distribution cam is fixedly arranged on the surface of the bearing; the first swing arm is arranged on the left side of the top of the bearing and is positioned at the top of the gas distribution cam; the second swing arm is arranged on the right side of the top of the bearing and is positioned at the top of the gas distribution cam; the first connecting arm is fixedly arranged at the top of the first swing arm; and the second connecting arm is fixedly arranged at the top of the second swing arm. According to the novel camshaft provided by the invention, the bearing, the gas distribution cam, the first swing arm, the second swing arm, the first connecting arm, the second connecting arm and other structures are mutually matched, so that two cams are not required to be used for respectively driving two sets of valve support, valve push rods and valve rocker arms when the camshaft is used, and the gas distribution phase of the inlet valve and the exhaust valve is further controlled, therefore, the novel camshaft is simple in integral structure, small in axial length and low in manufacturing cost.
Description
Technical Field
The invention relates to the field of camshafts, in particular to a novel camshaft.
Background
The camshaft is a component in a piston engine and functions to control the opening and closing action of the valves.
The existing single-cylinder vertical air-cooled diesel engine has the air inlet cam and the air outlet cam in the cam shaft, and the two cams respectively drive two sets of valve lifters, valve push rods and valve rocker arms so as to control the air distribution phase of an inlet valve and an exhaust valve, so that the cam shaft has the advantages of complex structure, large axial length and high manufacturing cost.
Therefore, it is necessary to provide a new camshaft to solve the above technical problems.
Disclosure of Invention
The invention provides a novel camshaft, which solves the problems of complex structure, large axial length and high manufacturing cost of the conventional camshaft.
In order to solve the above technical problem, the present invention provides a novel camshaft, including: a bearing;
the gas distribution cam is fixedly arranged on the surface of the bearing;
the first swing arm is arranged on the left side of the top of the bearing and is positioned at the top of the gas distribution cam;
the second swing arm is arranged on the right side of the top of the bearing and is positioned at the top of the gas distribution cam;
the first connecting arm is fixedly arranged at the top of the first swing arm;
and the second connecting arm is fixedly arranged at the top of the second swing arm.
Preferably, the top of the inner side of the first swing arm and the top of the inner side of the second swing arm are both fixedly provided with pre-installation rings
Preferably, the bottom of second swing arm is provided with the contact piece, the hole of accomodating has all been seted up to the inside both sides of second swing arm, the inside in accomodating the hole is provided with the carriage release lever.
Preferably, the surface of the moving rod is provided with a scale bar, and the bottom of the moving rod is fixedly installed with the top of the contact block.
Preferably, the inside of second swing arm just is located the inboard of accomodating the hole has seted up the fixed orifices, the inside of fixed orifices is provided with the screw thread post.
Preferably, the bottom of the threaded column is fixedly mounted with the top of the contact block, and a threaded ring is sleeved on the surface of the threaded column and located at the bottom of the second swing arm.
Preferably, the bottom of the second swing arm is located the circular chute has been seted up in the outside of fixed orifices, the inside both sides of circular chute all sliding connection have an arc slider, the bottom of arc slider with the top fixed mounting of screw ring.
Preferably, the two sides of the front surface of the second swing arm are both provided with locking bolts, and nuts are sleeved on the surfaces of the locking bolts.
Preferably, the back surface of the nut and the front surface of the second swing arm are fixedly mounted, a coil spring is arranged at the top of the nut and on the surface of the locking bolt, and a rotating ring is arranged at the bottom of the nut and on the surface of the locking bolt.
Preferably, the two sides of the bottom of the rotating ring are fixedly connected with connecting rods, a fixing plate is fixedly mounted at the bottom of each connecting rod, and a friction block is fixedly mounted at the bottom of each fixing plate.
Compared with the related art, the novel camshaft provided by the invention has the following beneficial effects:
the invention provides a novel camshaft, which is characterized in that two cams are not needed to be used for respectively driving two sets of valve support, valve push rods and valve rocker arms when the camshaft is used through the mutual matching of structures such as a bearing, a gas distribution cam, a first swing arm, a second swing arm, a first connecting arm and a second connecting arm, and further the gas distribution phase of an inlet valve and an exhaust valve is controlled, so that the novel camshaft is simple in integral structure, small in axial length and low in manufacturing cost.
Drawings
FIG. 1 is a schematic structural diagram of a first embodiment of a novel camshaft provided by the present invention;
FIG. 2 is a schematic view of the overall front view of FIG. 1;
FIG. 3 is a schematic structural view of the camshaft shown in FIG. 1;
FIG. 4 is a schematic structural diagram of a second embodiment of a novel camshaft provided by the present invention;
FIG. 5 is an enlarged view of portion A of FIG. 4;
FIG. 6 is a schematic view of the bottom of the circular chute shown in FIG. 4;
FIG. 7 is a schematic structural diagram of a third embodiment of a novel camshaft provided by the present invention;
reference numbers in the figures: 1. a bearing 2, a gas distribution cam 3, a first swing arm 4, a second swing arm 5, a first connecting arm 6, a second connecting arm 7 and a pre-installation ring,
8. contact block, 9, accommodating hole, 10, moving rod, 11, scale bar, 12, fixing hole, 13, threaded column, 14, threaded ring, 15, circular sliding groove, 16, arc-shaped sliding block, 17, locking bolt, 18, nut, 19, coil spring, 20, rotating ring, 21, connecting rod, 22, fixing plate, 23 and friction block,
24. the bolt comprises a threaded column, 25, a limiting hole, 26, a mounting seat, 27, a threaded sleeve, 28, a mounting hole, 29, an inserting column, 30 and a first spring.
Detailed Description
The invention is further described with reference to the following figures and embodiments.
First embodiment
Please refer to fig. 1, fig. 2 and fig. 3 in combination, wherein fig. 1 is a schematic structural diagram of a first embodiment of a novel camshaft provided by the present invention; FIG. 2 is a schematic view of the overall front view of FIG. 1; fig. 3 is a schematic structural view of the camshaft shown in fig. 1. A novel camshaft, comprising: a bearing 1;
the gas distribution cam 2 is fixedly arranged on the surface of the bearing 1;
the first swing arm 3 is arranged on the left side of the top of the bearing 1 and is positioned at the top of the gas distribution cam 2;
the second swing arm 4 is arranged on the right side of the top of the bearing 1 and is positioned at the top of the gas distribution cam 2;
the first connecting arm 5 is fixedly arranged at the top of the first swing arm 3;
and the second connecting arm 6 is fixedly arranged at the top of the second swing arm 4.
And the tops of the inner sides of the first swing arm 3 and the second swing arm 4 are fixedly provided with pre-installation rings 7.
The use position of the first swing arm 3 and the second swing arm 4 can be fixed according to the actual use condition by using the pre-installation ring 7, and the normal work of the first swing arm and the second swing arm is not influenced.
Only one common valve cam 2 is arranged, and the first swing arm 3 and the second swing arm 4 swing under the driving of the valve cam 2 to respectively push a valve push rod and a valve push rod, so that the valve rocker arm is used for controlling the valve timing of an inlet valve and an exhaust valve.
And the first connecting arm 5 is a first valve push rod and the second connecting arm 6 is a second valve push rod.
The arc surface of the swing arm presses on the surface of the gas distribution cam, and the swing arm is driven to swing up and down when the cam shaft rotates
The working principle of the novel camshaft provided by the invention is as follows:
the distribution cam 2 is fixed on the bearing 1, and the rotation of the bearing 1 drives the distribution cam 2 to rotate, so that the rotation of the distribution cam 2 and the rotation to the left side can push the first swing arm 3 to move under stress, and therefore the first connecting arm 5 is driven to move.
When the valve cam 2 rotates to the right, the second swing arm 4 is pushed to move under stress, so that the second connecting arm 6 is driven to move, and therefore the exhaust and air intake work is performed through the movement of the first connecting arm 5 and the second connecting arm 6.
Compared with the related art, the novel camshaft provided by the invention has the following beneficial effects:
through the mutual cooperation between bearing 1, distribution cam 2, first swing arm 3, second swing arm 4, first linking arm 5, second linking arm 6 isotructure, thereby make the camshaft need not use two cams to drive two sets of valve respectively and hold, valve push rod, valve rocker arm when using, and then control the distribution phase of (air) intake valve and exhaust valve, so make overall structure simple, axial length is little, the cost of manufacture is low.
Second embodiment
Referring to fig. 4, 5 and 6, a second embodiment of the present application provides another novel camshaft based on the novel camshaft provided by the first embodiment of the present application. The second embodiment is only the preferred mode of the first embodiment, and the implementation of the second embodiment does not affect the implementation of the first embodiment alone.
Specifically, the difference of the novel camshaft that the second embodiment of this application provided lies in, a novel camshaft, the bottom of second swing arm 4 is provided with contact block 8, hole 9 has all been seted up to the inside both sides of second swing arm 4 and has been accomodate, the inside of accomodating hole 9 is provided with carriage release lever 10.
The surface of the moving rod 10 is provided with a scale bar 11, and the bottom of the moving rod 10 is fixedly installed with the top of the contact block 8.
By using the moving rod 10 and the scale bar 11, the distance of the contact block 8 can be conveniently judged.
The inside of second swing arm 4 just is located the inboard of accomodating hole 9 has seted up fixed orifices 12, the inside of fixed orifices 12 is provided with screw thread post 13.
The bottom of the threaded column 13 is fixedly mounted with the top of the contact block 8, and a threaded ring 14 is sleeved on the surface of the threaded column 13 and located at the bottom of the second swing arm 4.
The bottom of the second swing arm 4 is located the circular sliding groove 15 is formed in the outer side of the fixing hole 12, arc-shaped sliding blocks 16 are connected to two inner sides of the circular sliding groove 15 in a sliding mode, and the bottom of each arc-shaped sliding block 16 is fixedly mounted on the top of the threaded ring 14.
And locking bolts 17 are arranged on two sides of the front surface of the second swing arm 4, and nuts 18 are sleeved on the surfaces of the locking bolts 17.
The back surface of the nut 18 is fixedly mounted with the front surface of the second swing arm 4, a coil spring 19 is arranged at the top of the nut 18 and on the surface of the locking bolt 17, and a rotating ring 20 is arranged at the bottom of the nut 18 and on the surface of the locking bolt 17.
By using the coil spring 19 and keeping the coil spring 19 in a certain state of elastic deformation, the nut 18 is always acted by force, so that the nut 18 is not easily acted by force to rotate and is forced to rotate upwards on the surface of the locking bolt 17 during the working process, and the structures such as the rotating ring 20, the connecting rod 21, the fixing plate 22 and the friction block 23 are always forced downwards, so that the threaded ring 14 can be pushed to perform stable rotation limiting work.
The two sides of the bottom of the rotating ring 20 are fixedly connected with connecting rods 21, the bottom of each connecting rod 21 is fixedly provided with a fixing plate 22, and the bottom of each fixing plate 22 is fixedly provided with a friction block 23.
The threaded ring 14 is provided with a rough surface on the top and the friction block 23 is provided with a rough surface on the bottom so that when they are in contact and the friction block 23 is not rotatable but only longitudinally movable, the threaded ring 14 is restricted from rotation.
The working principle of the novel camshaft provided by the invention is as follows:
when the using position of the contact block 8 needs to be adjusted according to the actual using condition, the nuts 18 on both sides can be rotated manually, and the nuts 18 are rotated and the locking bolt 17 is in a stationary state, so that the nuts 18 can move upwards on the surface of the locking bolt 17, and the nuts 18 rotate to drive the coil springs 19 to generate elastic deformation, and then the nuts 18 move to drive the rotating ring 20 to move upwards synchronously, and then the rotating ring 20 moves upwards to drive the connecting rods 21 to move, and then the connecting rods 21 move to drive the fixing plate 22 to move, and then the fixing plate 22 moves to drive the friction blocks 23 to move upwards through the movement of the fixing plate 22.
Until the friction block 23 is disengaged from the contact with the threaded ring 14, so that the threaded ring 14 is out of the rotation-limited state, then the threaded ring 14 can be manually rotated, and the arc-shaped sliding block 16 is driven by the rotation of the threaded ring 14, so that the arc-shaped sliding block 16 slides in the circular sliding groove 15, but the threaded ring 14 can only rotate and cannot be subjected to other position changes, so that the threaded column 13 moves downwards in the threaded ring 14 when the threaded ring 14 rotates, and the contact block 8 moves downwards by the downward movement of the threaded column 14 and the threaded column 14 moves downwards in the fixing hole 12, so that the use distance between the contact block 8 and the second swing arm 4 is adjusted by driving the contact block 8 to move downwards by the downward movement of the threaded column 14.
When the contact block 8 moves downwards, the moving rod 10 is driven, so that the moving rod 10 moves downwards and extends out in the accommodating hole 9, and the scale bar 11 arranged on the surface of the moving rod 10 is matched, so that the moving distance of the moving rod 10 can be judged, the moving distance of the contact block 8 can be known until the moving distance is adjusted to a proper state, then the nuts 18 on the two sides are rotated while the two sides are reversed again, so that the contact block 8 moves downwards until the contact block 8 is in close contact with the top of the threaded ring 14, the friction force between the contact block 8 and the threaded ring 14 is increased, and the threaded ring 14 cannot rotate.
Compared with the related art, the novel camshaft provided by the invention has the following beneficial effects:
through the contact block 8, accomodate hole 9, the carriage release lever 10, scale bar 11, fixed orifices 12, screw thread post 13, threaded ring 14, circular spout 15, arc slider 16, locking bolt 17, nut 18, wind spring 19, swivel ring 20, connecting rod 21, fixed plate 22, mutually supporting between the structures such as friction block 23 thereby can accomplish the in service position of adjusting contact block 8 as required, and contact block 8 mainly contacts with the camshaft body and is driving the article of second swing arm 4 work, so increased the work adaptability of second swing arm 4, make it can use on different engines.
Third embodiment
Referring to fig. 7, a third embodiment of the present application provides another novel camshaft based on the novel camshaft provided by the first embodiment of the present application. The third embodiment is only the preferable mode of the first embodiment, and the implementation of the third embodiment does not affect the implementation of the first embodiment alone.
Specifically, the difference of the novel camshaft that the third embodiment of this application provided lies in, a novel camshaft, the top fixed mounting that contacts piece 8 has threaded post 24, the both sides at contact piece 8 top just are located spacing hole 25 has all been seted up in the outside of threaded post 24.
The threaded column 24 is matched with the threaded sleeve 27, and the limiting hole 25 is matched with the inserted column 29.
The top of contact piece 8 is provided with mount pad 26, the bottom fixed mounting of mount pad 26 has thread bush 27, mounting hole 28 has all been seted up to the inside both sides of mount pad 26, the inside of mounting hole 28 is provided with inserts post 29, the top of inserting post 29 just is located the inside of mounting hole 28 is provided with first spring 30.
The mounting base 26 and the contact block 8 can be fixed in position during installation by the cooperation of the mounting hole 28, the insertion column 29, the first spring 30 and the limiting hole 25, so that loose installation under the action of external force is avoided.
The working principle of the novel camshaft provided by the invention is as follows:
when the contact block 8 needs to be replaced, the contact block 8 can be manually rotated, and the rotating force is larger, so that the limiting hole 25 is driven to rotate through the rotation of the contact block 8, the limiting hole 25 can press the plug column 29, the plug column 29 is forced to retract upwards into the mounting hole 28, the plug column 29 moves upwards in the mounting hole 28, and the first spring 30 is pressed through the movement of the plug column 29, so that the first spring 30 is elastically deformed.
When the contact block 8 is rotated, the limiting hole 25 continuously rotates and is aligned with the plug post 29, and at the moment, the plug post 29 is forced to move downwards to be inserted into the limiting hole 25 by matching with the elastic deformation of the first spring 30, meanwhile, the contact block 8 is rotated again to drive the limiting hole 25 to drive the plug post 29 to be forced to retract into the mounting hole 28 again, and the like, so that the contact block 8 is completely separated from the mounting seat 26.
The contact block 8 rotates to drive the stud 24 to rotate, and the threaded sleeve 27 is in a stationary state, so that the stud 24 is gradually separated from the threaded connection inside the threaded sleeve 27.
Compared with the related art, the novel camshaft provided by the invention has the following beneficial effects:
through the mutual cooperation between the structures such as the stud 24, the limiting hole 25, the mounting seat 26, the thread bush 27, the mounting hole 28, the inserted column 29 and the first spring 30, the replacement work of the contact block 8 can be realized, the contact block 8 is mainly contacted with the camshaft body to drive the second swing arm 4 to work, and the contact block can be replaced to avoid the situation that the moving amplitude of the contact block driving the second swing arm 4 to work is reduced due to abrasion in long-term work.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A novel camshaft, comprising: a bearing;
the gas distribution cam is fixedly arranged on the surface of the bearing;
the first swing arm is arranged on the left side of the top of the bearing and is positioned at the top of the gas distribution cam;
the second swing arm is arranged on the right side of the top of the bearing and is positioned at the top of the gas distribution cam;
the first connecting arm is fixedly arranged at the top of the first swing arm;
and the second connecting arm is fixedly arranged at the top of the second swing arm.
2. The novel camshaft of claim 1 wherein the top of the inside of the first swing arm and the second swing arm are fixedly mounted with pre-mounting rings.
3. The novel camshaft as claimed in claim 1, wherein the bottom of the second swing arm is provided with a contact block, the two sides of the inside of the second swing arm are both provided with a receiving hole, and the inside of the receiving hole is provided with a moving rod.
4. The novel camshaft as claimed in claim 3, wherein the surface of the moving rod is provided with a scale bar, and the bottom of the moving rod is fixedly installed with the top of the contact block.
5. The novel camshaft of claim 4, wherein a fixing hole is formed inside the second swing arm and inside the receiving hole, and a threaded column is arranged inside the fixing hole.
6. The novel camshaft of claim 5, wherein the bottom of the threaded column is fixedly installed with the top of the contact block, and a threaded ring is sleeved on the surface of the threaded column and at the bottom of the second swing arm.
7. The novel camshaft of claim 6, wherein a circular sliding groove is formed in the bottom of the second swing arm and located outside the fixing hole, arc-shaped sliding blocks are connected to two sides of the inside of the circular sliding groove in a sliding mode, and the bottom of each arc-shaped sliding block is fixedly mounted with the top of the corresponding threaded ring.
8. The novel camshaft of claim 7, wherein the two sides of the front surface of the second swing arm are provided with locking bolts, and nuts are sleeved on the surfaces of the locking bolts.
9. The novel camshaft of claim 8, wherein the back surface of the nut is fixedly installed with the front surface of the second swing arm, a coil spring is arranged on the top of the nut and positioned on the surface of the locking bolt, and a rotating ring is arranged on the bottom of the nut and positioned on the surface of the locking bolt.
10. The novel camshaft of claim 9, wherein the connecting rod is fixedly connected to both sides of the bottom of the rotating ring, the bottom of the connecting rod is fixedly provided with the fixing plate, and the bottom of the fixing plate is fixedly provided with the friction block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211260687.3A CN115434778A (en) | 2022-10-14 | 2022-10-14 | Novel camshaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211260687.3A CN115434778A (en) | 2022-10-14 | 2022-10-14 | Novel camshaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115434778A true CN115434778A (en) | 2022-12-06 |
Family
ID=84251583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211260687.3A Pending CN115434778A (en) | 2022-10-14 | 2022-10-14 | Novel camshaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115434778A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3757749A (en) * | 1970-04-14 | 1973-09-11 | Hatz Motoren | Valve operating gear in internal combustion engines |
| CN104295331A (en) * | 2014-08-14 | 2015-01-21 | 重庆隆鑫发动机有限公司 | Valve mechanism of motorcycle engine and motorcycle engine |
| CN104329134A (en) * | 2014-11-09 | 2015-02-04 | 重庆鼎工机电有限公司 | Gas distribution mechanism of general engine |
| CN205089392U (en) * | 2015-11-05 | 2016-03-16 | 重庆驰龙摩托车配件有限公司 | Valve timing mechanism of motorcycle engine |
| CN205089386U (en) * | 2015-11-05 | 2016-03-16 | 重庆驰龙摩托车配件有限公司 | Valve timing mechanism of motorcycle engine |
-
2022
- 2022-10-14 CN CN202211260687.3A patent/CN115434778A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3757749A (en) * | 1970-04-14 | 1973-09-11 | Hatz Motoren | Valve operating gear in internal combustion engines |
| CN104295331A (en) * | 2014-08-14 | 2015-01-21 | 重庆隆鑫发动机有限公司 | Valve mechanism of motorcycle engine and motorcycle engine |
| CN104329134A (en) * | 2014-11-09 | 2015-02-04 | 重庆鼎工机电有限公司 | Gas distribution mechanism of general engine |
| CN205089392U (en) * | 2015-11-05 | 2016-03-16 | 重庆驰龙摩托车配件有限公司 | Valve timing mechanism of motorcycle engine |
| CN205089386U (en) * | 2015-11-05 | 2016-03-16 | 重庆驰龙摩托车配件有限公司 | Valve timing mechanism of motorcycle engine |
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