CN204457903U - A kind of distribution device of motor and push rod thereof - Google Patents
A kind of distribution device of motor and push rod thereof Download PDFInfo
- Publication number
- CN204457903U CN204457903U CN201420846909.4U CN201420846909U CN204457903U CN 204457903 U CN204457903 U CN 204457903U CN 201420846909 U CN201420846909 U CN 201420846909U CN 204457903 U CN204457903 U CN 204457903U
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- China
- Prior art keywords
- joint
- push rod
- tappet
- spring
- shaft
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- Withdrawn - After Issue
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Abstract
The utility model provides a kind of distribution device and push rod thereof of motor, and its structure is simple, can apply pretightening force to tappet, reduces the risk that tappet flies off.The utility model provides a kind of push rod of engine valve actuating mechanism, comprise shaft and be arranged on the first joint and second joint at its two ends, described first joint and the second joint are respectively used to connecting rocker arm and tappet, described shaft is also provided with the spring seat for installing Compress Spring, to compress described spring when described tappet supports described push rod.Push rod of the present utility model is provided with the spring seat for mounting spring, then can compress described spring when tappet supports push rod, and then the resilient force to be produced by Compress Spring is in the second joint, and by the second joint action in tappet, the pressing force that one is pointed to cam is applied to tappet, tappet and cam are kept in touch, avoids tappet to fly off, ensure that the functional reliability of distribution device.
Description
Technical field
The utility model relates to technical field of engines, particularly relates to a kind of distribution device and push rod thereof of motor.
Background technique
Distribution device is one of major engine components, and its function is the requirement of job order according to motor and work cycle, time opening and close the inlet and outlet door of each cylinder, and make new gas enter cylinder, waste gas is discharged from cylinder.
Distribution device comprises valve train assembly, comprises camshaft, tappet, push rod, rocking arm, pitman arm shaft, rocker shaft bed and valve adjusting screw etc.Wherein, tappet is the driven member of cam, its function be by from the motion of cam and force transmission to push rod or valve, also bear the lateral force that cam applies simultaneously, and passed to body or cylinder head; Push rod is between tappet and rocking arm, passes to rocking arm for the motion transmitted by tappet and active force.
During use, must ensure that tappet remains with cam and contact, to realize the reliable transmission of power, but along with the raising of rotating speed, tappet can depart from cam instantaneously, and cause cam contact stress to be instantaneously zero, namely tappet flies off, and affects complete machine normal operation.
In prior art, reduce by change cam profile, the mode that increases valve spring pretightening force the risk that tappet flies off.But the enforcement of aforesaid way is comparatively complicated, and some type cannot realize above-mentioned change.
Therefore, how designing a kind of engine valve actuating mechanism and push rod thereof, to reduce the risk that tappet flies off, improve the functional reliability of whole distribution device, is the current technical issues that need to address of those skilled in the art.
Model utility content
The purpose of this utility model is to provide a kind of push rod of engine valve actuating mechanism, and its structure is simple, can apply pretightening force to tappet, reduces the risk that tappet flies off.
Another object of the present utility model is to provide a kind of engine valve actuating mechanism with above-mentioned push rod, and the risk that its tappet flies off is less, and functional reliability is higher.
For solving the problems of the technologies described above, the utility model provides a kind of push rod of engine valve actuating mechanism, comprise shaft and be arranged on the first joint and second joint at its two ends, described first joint and the second joint are respectively used to connecting rocker arm and tappet, described shaft is also provided with the spring seat for mounting spring, to compress described spring when described tappet supports described push rod.
Push rod of the present utility model is provided with the spring seat for mounting spring, then can compress described spring when tappet supports push rod, and then the resilient force to be produced by Compress Spring is in the second joint, and by the second joint action in tappet, the pressing force that one is pointed to cam is applied to tappet, tappet and cam are kept in touch, avoids tappet to fly off, ensure that the functional reliability of distribution device.
Alternatively, described spring seat is that plate-like is sleeved on described shaft, and its outer periphery is towards described first joint bending, to form the installation position of described spring in the middle part of it.
Alternatively, described spring seat adopts laser bonding to be connected on described shaft.
Alternatively, described shaft is hollow tube, and described first joint and the second joint all have the through hole be communicated with the hollow cavity of described shaft.
Alternatively, described first joint and described second joint adopt the mode of resistance welding or friction welding to be connected on described shaft; Or described shaft is inserted in described first joint and described second joint by interference fit.
Alternatively, described first joint is the ball-and-socket that can coordinate with described rocking arm ball pivot.
Alternatively, described second joint is the bulb that can coordinate with described tappet ball pivot.
The utility model also provides a kind of distribution device of motor, comprises rocking arm, tappet and push rod, and the two ends of described push rod are connected with tappet with described rocking arm respectively, and described push rod is the push rod described in above-mentioned any one.
Because distribution device of the present utility model has the push rod described in above-mentioned any one, therefore the technique effect that the push rod described in above-mentioned any one produces all is applicable to distribution device of the present utility model, repeats no more herein.
Alternatively, also comprise the spring being sleeved on described shaft outside and the pitman arm shaft be connected with described rocking arm, described pitman arm shaft is fixed with the spring seat of honour, the described spring seat of honour and described spring seat are intended distance, to compress described spring when described tappet supports described push rod.
Alternatively, the described spring seat of honour is bolted and is fixed on described pitman arm shaft.
Accompanying drawing explanation
Fig. 1 provides by the utility model the partial structurtes schematic diagram of the distribution device of motor in a kind of embodiment;
Fig. 2 is for going out the partial structurtes schematic diagram after camshaft and tappet in distribution device shown in Fig. 1;
Fig. 3 provides by the utility model the cross-sectional view of push rod in a kind of embodiment.
In Fig. 1-3:
Shaft 1, first joint 11, first through hole 111, second joint 12, second through hole 121, spring seat 13, rocking arm 2, tappet 3, push rod 4, spring 5, pitman arm shaft 6, the spring seat of honour 7, bolt 8, cam 9
Embodiment
Core of the present utility model is to provide a kind of push rod of engine valve actuating mechanism, and its structure is simple, can apply pretightening force to tappet, reduces the risk that tappet flies off.
Another core of the present utility model is to provide a kind of engine valve actuating mechanism with above-mentioned push rod, and the risk that its tappet flies off is less, and functional reliability is higher.
Understand the utility model scheme better, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Please refer to Fig. 1 and Fig. 2, Fig. 1 provides by the utility model the partial structurtes schematic diagram of the distribution device of motor in a kind of embodiment; Fig. 2 is for going out the partial structurtes schematic diagram after camshaft and tappet in distribution device shown in Fig. 1.
In a kind of embodiment, the distribution device of motor of the present utility model comprises rocking arm 2, tappet 3 and push rod 4, and push rod 4 is between rocking arm 2 and tappet 3, passes to rocking arm 2 for the motion transmitted by tappet 3 and active force; Tappet 3 contacts with cam 9, is driven by cam 9, belongs to the driven member of cam 9, needs in the course of the work to keep in touch with cam 9.
For this reason, push rod 4 of the present utility model comprises shaft 1 and is arranged on first joint 11 at shaft 1 two ends and the second joint 12, first joint 11 is connected with rocking arm 2, and the second joint 12 is connected with tappet 3; Shaft 1 is also provided with spring seat 13, spring seat 13 is for mounting spring 5 simultaneously; Spring 5 is arranged on after on spring seat 13, compressive strain can be produced when tappet 3 supports push rod 4, namely Compress Spring 5 is understood when tappet 3 supports push rod 4, spring 5 is made to produce elastic-restoring force, and then spring seat 13 is produced to the pressure of sensing second joint 12 so that the second joint 12 by this force transmission to tappet 3, and then pressing tappet 3, make tappet 3 keep reliable contacts with cam 9 under the effect of this active force, avoid tappet 3 to fly off.
In detail, can also comprise spring 5 and pitman arm shaft 6 in distribution device of the present utility model, spring 5 is sleeved on the shaft 1 of push rod 4, is in the outside of shaft 1; Pitman arm shaft 6 is connected with rocking arm 2, then can be connected a spring seat of honour 7 on pitman arm shaft 6, and makes the spring seat of honour 7 keep intended distance with the spring seat 13 on push rod 1, and the two ends of spring 5 are connected with spring seat 13 with the spring seat of honour 7 respectively.By arranging spring 5, the relativeness of the spring seat of honour 7 and spring seat 13, all the time compressive state is in after spring 5 can be made to install, or the distance of the contracting section spring seat of honour 7 and spring seat 13 in the process of push rod 4 is supported at tappet 3, and then Compress Spring 5, make spring 5 produce point to tappet 3 elastic-restoring force, and then promote push rod 4 towards the direction away from rocking arm 2, the second joint 12 of push rod 4 is made to press tappet 3, and then pretightening force is applied to tappet 3, tappet 3 can be kept in touch with cam 9, reduce the risk that tappet flies off largely, improve the functional reliability of distribution device.
Compressive state is in after installing to make spring 5, described intended distance is defined as the distance between the spring seat of honour 7 and spring seat 13 on the bearing of trend of shaft 1, then described intended distance can be less than spring 5 length in its natural state usually, so that it is arranged on after between the spring seat of honour 7 and spring seat 13 in compressive state; Certainly, described intended distance also can equal or be slightly less than spring 5 length in its natural state, can shorten described intended distance when tappet 3 supports push rod 4, and then Compress Spring 5.Those skilled in the art can according to the size adjustment spring 5 of pretightening force needed for tappet 3 and described intended distance.
Be appreciated that the length due to push rod 4 is comparatively large, for ease of the location of spring 5, spring seat 13 can be arranged on the direction near the first joint 11 usually, to keep intended distance with the spring seat of honour 7, this intended distance can be the smaller value in certain limit, thus avoids spring 5 generation to rock.
In the structure shown in Fig. 1 and Fig. 2, the spring seat of honour 7 is fixedly connected on pitman arm shaft 6 by bolt 8, is convenient to dismounting, and can change as required or the mounting point of Regulation spring 5.
Obviously, those skilled in the art can also adopt other modes to realize the fixing of the spring seat of honour 7, such as, can directly the spring seat of honour 7 be welded or are shaped on pitman arm shaft 6, or adopt other to be fixedly connected with mode.
In the above-described embodiment, pitman arm shaft 6 arranges the spring seat of honour 7, on the one hand, reliably can locate spring 5, so that spring 5 produces enough elastic forces, to press tappet 5; On the other hand, the spring seat of honour 7 is on pitman arm shaft 6, can not have an impact to the normal operation of distribution device; Moreover the structure at the spring seat of honour 7 is simple, is convenient to dismounting, to adjust its position as required.
Certainly, in order to realize the compression of spring 5 and fix, also the spring seat of honour 7 can be set on pitman arm shaft 6, such as, one end of spring 5 and pitman arm shaft 6 directly can be connected, be connected with spring seat 13 with its other end after then being compressed by spring 5, then spring 5 still can support spring seat 13, and then apply pretightening force by shaft 1 and the second joint 12 to tappet 3, avoid tappet 3 to fly off.
Or, the miscellaneous part of one end of spring 5 and distribution device can also be connected, then be connected to spring seat 13 in compressive state, and then the active force that is pointed to the second joint 12 direction is produced to spring seat 13, make the second joint 12 press tappet 3; That is, the concrete installation form of spring 5 is not limit, as long as can be transmitted the active force of pressing tappet 3 to the second joint 12 by spring seat 13.
Being the utility model please further refer to Fig. 3, Fig. 3 provides the cross-sectional view of push rod in a kind of embodiment.
As shown in Figure 3, the first joint 11 can be ball-and-socket, and can coordinate with rocking arm 2 ball pivot; Second joint 12 can be bulb, and forms ball pivot with tappet 3 and coordinate, as shown in Figure 1.Accordingly, rocking arm 2 is provided with the ball head structure coordinated with the first joint 11, and tappet 3 is provided with the ball-and-socket or spherical macrospore that coordinate with the second joint 12, to be coordinated the connection realizing push rod 4 and rocking arm 2, push rod 4 and tappet 3 by ball pivot.
First joint 11 and the second joint 12 can also adopt other structural types, as long as can realize the connection of push rod 4 and rocking arm 2 and tappet 3; Specific constructive form with reference to prior art, can will not enumerate herein.
On the basis of the above, the first joint 11 and the second joint 12 can adopt the mode of resistance welding or friction welding to be connected on described shaft 1, and the stress that can reduce push rod 4 is concentrated, and ensures the join strength at its two ends simultaneously; Or the first joint 11 and the second joint 12 also can adopt the Placement of plug-in type, insert in the first joint 11 and the second joint 12 by shaft 1 respectively by interference fit, to realize the first joint 11 and the connection of shaft 1, second joint 12 with shaft 1; Or the first joint 11 and the second joint 12 can adopt riveted joint etc. to be fixedly connected with mode and realize the connection with shaft 1.
Further, spring seat 13 can be arranged in plate-like, and namely spring seat 13 can be spring holder, now, spring seat 13 can be sleeved on shaft 1, so as spring seat 13 along shaft 1 circumferential hoop around, and the radially outward had along shaft 1 stretch out extend radially out part; When spring 5 is sleeved on shaft 1, and when being connected with spring seat 13, the portion that extends radially out of spring seat 13 can position spring 5 effectively, prevent the axis of its relative shaft 1 in the process of compressive strain crooked, so that the distortion of spring 5 produces enough axial pressures, to press tappet 3; Under normal circumstances, the internal diameter of spring 5 is slightly larger than the external diameter of shaft 1, but when both differences are larger, spring 5 radial direction is larger away from the distance of shaft 1, when spring seat 13 is set to disk-like structure, its part extending radially out shaft 1 is longer, fully can contact with spring 5, to ensure the reliability of locating spring 5, spring 5 is arranged on shaft 1 in compressive state.
Further, when spring seat 13 is set to disk-like structure, its outer periphery can bend towards the direction of the first joint 11, so that spring seat 13 is formed the installation position of spring 5 with the middle part of spring holder, carry out spacing by its outer periphery to spring 5, prevent spring 5 from moving radially and departing from spring seat 13, make spring 5 be in compressive state all the time, and then by the elastic force of spring 5, pretightening force is applied to tappet 3.
The outer periphery of described spring seat 13 is is reference with the medial axis of shaft 1, and in the direction of shaft 1 medial axis is, the direction away from its medial axis is outward; The middle part of described spring seat 13 is for its outer periphery, and the zone line that can be formed for the certain distance that stretched out by the center of spring seat 13 is not the middle of thrum spring abutment 13 definitely.In addition, spring seat 13 coaxially can also be arranged with shaft 1, namely runs through the center of spring seat 13 with shaft 1, then the radial direction of shaft 1 is the radial direction of spring seat 13, when spring 5 is sleeved on shaft 1 outside, spring seat 13 is coaxial with spring 5, can carry out more effective location to spring 5.
The mode realizing spring seat 13 fixing with shaft 1 is various, and the mode of laser bonding can be adopted to be connected on shaft 1 by spring seat 13; Or, can spring seat 13 be shaped on shaft 1; Or spring seat 13 can also adopt other Placements such as grafting to be fixed on shaft 1.
Wherein, shaft 1 can be hollow tube, and namely shaft 1 can have the hollow cavity running through setting, and particularly, shaft 1 can be cold rolling hollow steel pipe; First joint 11 and the second joint 12 can be alloyed steel, now, effectively can reduce the weight of push rod 4, so that the active force of spring 5 acts on push rod 4 effectively, and then press tappet 3 by push rod 4.Certainly, shaft 1, first joint 11, second joint 12 also can adopt other materials to make.
When shaft 1 is set to hollow tube, on the first joint 11 and the second joint 12, through hole can also be set, to be communicated with the hollow cavity of shaft 1; Namely the first through hole 111 can be set on the first joint 11, second joint 12 is arranged the second through hole 121, and the first through hole 111 is all communicated with the hollow cavity of shaft 1 with the second through hole 121, form the passage of a through push rod 4, this passage can as the oil duct of lubricant oil, walking oil lubrication with the inside realizing push rod 4, without the need to additionally arranging lubricating oil path for push rod 4, and then simplifying the structure of distribution device; Moreover oil lubrication is walked in the inside of push rod 4, lubricant oil can be made effectively to flow to the joint of lubrication push rod 4 and rocking arm 2, push rod 4 and tappet 3, and then reduce Relative friction, reduce energy loss.
It should be noted that, in the distribution device of motor, parts are more, and structure is comparatively complicated, have only been described in detail its push rod 4 and coupled structure herein, and other are not use up part and refer to prior art, repeat no more herein.
Above the distribution device of motor provided by the utility model and push rod thereof are described in detail.Apply specific case herein to set forth principle of the present utility model and mode of execution, the explanation of above embodiment just understands core concept of the present utility model for helping.Should be understood that; for those skilled in the art; under the prerequisite not departing from the utility model principle, can also carry out some improvement and modification to the utility model, these improve and modify and also fall in the protection domain of the utility model claim.
Claims (10)
1. the push rod (4) of an engine valve actuating mechanism, comprise shaft (1) and be arranged on the first joint (11) and second joint (12) at its two ends, described first joint (11) and the second joint (12) are respectively used to connecting rocker arm (2) and tappet (3), it is characterized in that, described shaft (1) is also provided with the spring seat (13) for mounting spring (5), to compress described spring (5) when described tappet (3) supports described push rod (4).
2. push rod as claimed in claim 1, it is characterized in that, described spring seat (13) is sleeved on described shaft (1) in plate-like, and its outer periphery bends, to form the installation position of described spring (5) in the middle part of it towards described first joint (11).
3. push rod as claimed in claim 2, is characterized in that, described spring seat (13) adopts laser bonding to be connected on described shaft (1).
4. the push rod as described in any one of claim 1-3, it is characterized in that, described shaft (1) is hollow tube, and described first joint (11) and the second joint (12) all have the through hole be communicated with the hollow cavity of described shaft (1).
5. push rod as claimed in claim 4, is characterized in that, described first joint (11) and described second joint (12) adopt the mode of resistance welding or friction welding to be connected on described shaft (1); Or described shaft (1) is inserted in described first joint (11) and described second joint (12) by interference fit.
6. push rod as claimed in claim 5, it is characterized in that, described first joint (11) is the ball-and-socket that can coordinate with described rocking arm (2) ball pivot.
7. push rod as claimed in claim 5, it is characterized in that, described second joint (12) is the bulb that can coordinate with described tappet (3) ball pivot.
8. the distribution device of a motor, comprise rocking arm (2), tappet (3) and push rod (4), the two ends of described push rod (4) are connected with tappet (3) with described rocking arm (2) respectively, it is characterized in that, described push rod (4) is the push rod (4) described in any one of the claims 1-7.
9. distribution device as claimed in claim 8, it is characterized in that, also comprise the pitman arm shaft (6) being sleeved on the outside spring (5) of described shaft (1) and being connected with described rocking arm (2), described pitman arm shaft (6) is fixed with the spring seat of honour (7), the described spring seat of honour (7) and described spring seat (13) in intended distance, to compress described spring (5) when described tappet (3) supports described push rod (4).
10. distribution device as claimed in claim 9, it is characterized in that, the described spring seat of honour (7) is fastened on described pitman arm shaft (6) by bolt (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420846909.4U CN204457903U (en) | 2014-12-26 | 2014-12-26 | A kind of distribution device of motor and push rod thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420846909.4U CN204457903U (en) | 2014-12-26 | 2014-12-26 | A kind of distribution device of motor and push rod thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204457903U true CN204457903U (en) | 2015-07-08 |
Family
ID=53664805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420846909.4U Withdrawn - After Issue CN204457903U (en) | 2014-12-26 | 2014-12-26 | A kind of distribution device of motor and push rod thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204457903U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104533560A (en) * | 2014-12-26 | 2015-04-22 | 潍柴动力股份有限公司 | Valve actuating mechanism of engine and push rod of valve actuating mechanism |
-
2014
- 2014-12-26 CN CN201420846909.4U patent/CN204457903U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104533560A (en) * | 2014-12-26 | 2015-04-22 | 潍柴动力股份有限公司 | Valve actuating mechanism of engine and push rod of valve actuating mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150708 Effective date of abandoning: 20170905 |