CN201377375Y - Anti-reversing safety handle of diesel engine - Google Patents
Anti-reversing safety handle of diesel engine Download PDFInfo
- Publication number
- CN201377375Y CN201377375Y CN200920106777U CN200920106777U CN201377375Y CN 201377375 Y CN201377375 Y CN 201377375Y CN 200920106777 U CN200920106777 U CN 200920106777U CN 200920106777 U CN200920106777 U CN 200920106777U CN 201377375 Y CN201377375 Y CN 201377375Y
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- China
- Prior art keywords
- diesel engine
- star
- wheel
- handle
- rocking arm
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- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses an anti-reversing safety handle of a diesel engine, comprising a handle and a handle cover. The anti-reversing safety handle comprises a one-way clutch, a rocker and a cylindrical pin, wherein, the one-way clutch is connected with one end of the rocker together by the cylindrical pin, and the other end of the rocker is connected with the handle together. The one-way clutch comprises a star wheel, an outer ring, a ball bearing, a compression spring, a cover plate and a spring flange. The utility model has the advantages of simple structure, easy use and reliable performance.
Description
Technical field
The utility model relates to the start-up system of reciprocating type medium and small power diesel engine, relates in particular to the single cylinder diesel manual cranking handle with reverse-rotation preventing function.
Background technique
Reverse during the hand starting of four-cycle, single-cylinder diesel engine, though be a kind of sporadic small probability event,, in case can cause the serious accident that damages machine, injury operator after taking place.The traditional simple and easy operating crank that single cylinder diesel adopts at present, though simple in structure, owing to do not possess the reversal protection function, in practicality,, can not satisfy the safety requirement of reciprocating internal combustion engine NBS because the accident that the diesel engine counter-rotating causes happens occasionally.
In recent years, country has introduced the counter-rotating limitation function of diesel engine starting device the important examination project of new product performance, has stipulated concrete performance assessment criteria and evaluation method.Under the promotion of a series of relevant policies of country, various novel starting arrangements with counter-rotating limitation function arise at the historic moment.The structure of wherein comparatively commonly various ratchets, pawl type.Though this structure has the counter-rotating limitation function, but its complex structure, and the main structure of change diesel engine part that relies on realizes, make versatility, technology inheritance even the boundary dimension of diesel engine related components be affected, increased the manufacture cost of diesel engine, made its popularization receive influence.
Summary of the invention
For solving above-mentioned middle problem and the defective that exists, the utility model provides a kind of anti-contrarotation security handle.
The utility model is achieved through the following technical solutions:
A kind of anti-contrarotation security handle that the utility model is related comprises:
This anti-contrarotation security handle comprises overrunning clutch, rocking arm and a straight pin, and described overrunning clutch links together by an end of straight pin and rocking arm, and the other end and the handle of described rocking arm link together.
Described overrunning clutch comprises star-wheel, outer shroud, ball, stage clip, cover plate and a check ring.
It is integrally welded that described rocking arm passes the endoporus and the star-wheel of star-wheel.
Described anti-contrarotation security handle also comprises a starting pin, and this starting pin is arranged on the rocking arm, is fixed together with rocking arm.
Described rocking arm stretch out the axis of guide that diameter is a diesel engine starting axle endoporus.
The beneficial effect of the technological scheme that the utility model provides is:
1, the utility model has the self-detaching function when diesel engine reverses, and is safe and reliable;
2, simple in structure, easy to use, the operator grasped easily and accept.
Description of drawings
Fig. 1 is the first example structure schematic representation of the present utility model;
Fig. 1 a and 1b are the cross-section structures of star-wheel and face structural drawing;
Fig. 1 c and 1d are the cross-section structures of outer shroud and face structural drawing;
Fig. 1 e is the structural drawing of roller;
Fig. 2 is the second example structure schematic representation of the present utility model;
Fig. 3 is the fundamental diagram of plane star-wheel roller-type overrunning clutch;
Fig. 4 is star-wheel and the starting pin structural drawing after diesel engine quickens;
Outer shroud circle configurations figure when Fig. 5 is diesel engine starting.
Embodiment
For making the purpose of this utility model, technological scheme and advantage clearer, the utility model mode of execution is described in further detail below in conjunction with accompanying drawing:
Embodiment 1
As shown in Figure 1, showed structure of the present utility model, an end and the rocking arm 2 of handle 1 are riveted together, and are provided with taper knob in handle 1 outside, and handle is rotated flexibly.Star-wheel 3, outer shroud 4, roller 5, stage clip (seeing schematic diagram 3) cover plate 7 and 8 six kinds of parts of check ring have constituted overrunning clutch.Overrunning clutch links together with the other end of straight pin 9 with rocking arm.
As Fig. 1 a, 1b, 1c, 1d and 1e is respectively the cross-section structure and the positive TV structure of star-wheel in the overrunning clutch, outer shroud and roller, and star-wheel has the dual functions that starts pawl 21 and clutch, endoporus D
1As the pilot hole that starts axle, the cylinder end face has two spiral chutes that are symmetrically distributed in week along unit, when with the startup pins engages of diesel engine, can realize starting and throw off function automatically, be provided with compression spring hole 22 in the stage clip of described star-wheel, the described roller effect of ring inner surface frictional force is outside washed, and rolls along the working plane 23 of star-wheel.Endoporus D is called the nominal diameter of clutch, and two equally distributed spiral chutes are also arranged on the circumference of outer shroud end face, and the central angle β of its right-hand screw groove radial facing correspondence is one of important parameter of decision handle reverse turn disengagement angle and functional reliability.When counter-rotating takes place in diesel engine, the acting in conjunction of safety pin on outer shroud helicoid and diesel engine starting outer shaft sleeve.Ball is the critical elements that realizes clutch combination and transcendent function.
Embodiment 2
As shown in Figure 2, showed another structure of the present utility model, handle 1 can freely rotate on rocking arm 2 by taper knob, and endoporus and star-wheel that rocking arm 2 passes star-wheel 3 are welded into one.Component such as star-wheel 3, outer shroud 4, roller 5, stage clip, cover plate 7, check ring 8 constitute overrunning clutch.Rocking arm 2 stretch out diameter d
1As the axis of guide of diesel engine starting axle endoporus, and be fixed with startup pin 10, withdraw from automatically as after realizing diesel engine starting and starting.
When star-wheel 3 n rotation along clockwise direction, roller 5 is under the effect of outer shroud 4 internal surface frictional force, working plane C along star-wheel is rolled to position B by position A, between star-wheel, roller and outer shroud, can produce certain clearance, lose auto-lock function, outer shroud can be rotates with star-wheel, and rotates along clockwise direction or keep state of rest with the rotating speed that is lower than star-wheel, when diesel engine starting, outer shroud is stopped by two safety pins of diesel engine starting outer shaft sleeve, has lost the function that clockwise rotates.
Clutch is the main constituent elements of anti-contrarotation security handle, uses the handle of different size, and its clutch configuration and working principle are basic identical.This clutch is a kind of typical structural type, be commonly referred to as " plane star-wheel roller-type overrunning clutch; its working principle as shown in Figure 4: between the working plane C and outer shroud endoporus D of star-wheel; be equipped with and see that diameter is the roller of d more, roller is in contact condition all the time by the surface of the endoporus D of stage clip b pusher and outer shroud.Its roller angle of wedge
Because the angle of wedge
Less than friction angle, therefore, when star-wheel 3 was rotated counterclockwise, roller and star-wheel, outer shroud produced self-locking, and star-wheel drives outer shroud rotation in the counterclockwise direction together by roller.
During diesel engine starting, the starting pivot pin of axial plane of star-wheel (being starter) and diesel engine nibble mutually and, operating crank drives diesel engine n rotation along clockwise direction by star-wheel.Under the self-locking action of surface of contact frictional force, realized the diesel engine normal starting.As shown in Figure 4, after diesel engine quickens, when rotating speed surpasses star wheel rotate speed, starting pin with star-wheel helicoid point of contact B one peripheral force T
1Promote its rotation, produced simultaneously axial force P
1Star-wheel is released, realized the automatic function of throwing off in starting back, axially P
1Size be: T
1
As shown in Figure 5, during diesel engine starting, two spiral chutes that are symmetrically distributed on the clutch outer shroud circumference and the engagement of the safety pin of diesel engine starting outer shaft sleeve.When counter-rotating takes place diesel engine (rotating counterclockwise), start axle and be rotated counterclockwise along the n direction together by star-wheel drive outer shroud.Point of contact B place at outer shroud helicoid and safety pin produces end thrust P
2:
End thrust P
2After overcoming the surface friction drag of diesel engine starting pin and star-wheel junction plane, realize counter-rotating disengagement function automatically.The utility model is when structural design, and preferred respectively have related parameter, makes tearaway load P
2Be 2.5 times of frictional force, guaranteed the reliability of reverse turn disengagement function.
The above; it only is the preferable embodiment of the utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement all should be encompassed within the protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claim.
Claims (5)
1, diesel engine anti-contrarotation security handle, comprise: handle and taper knob, it is characterized in that, this anti-contrarotation security handle comprises overrunning clutch, rocking arm and a straight pin, described overrunning clutch links together by an end of straight pin and rocking arm, and the other end and the handle of described rocking arm link together.
2, anti-contrarotation security handle according to claim 1 is characterized in that, described overrunning clutch comprises star-wheel, outer shroud, ball, stage clip, cover plate and a check ring.
3, anti-contrarotation security handle according to claim 2 is characterized in that, it is integrally welded that described rocking arm passes the endoporus and the star-wheel of star-wheel.
4, anti-contrarotation security handle according to claim 1 is characterized in that, described anti-contrarotation security handle also comprises a starting pin, and this starting pin is arranged on the rocking arm, is fixed together with rocking arm.
5, anti-contrarotation security handle according to claim 1 is characterized in that, described rocking arm stretch out the axis of guide that diameter is a diesel engine starting axle endoporus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920106777U CN201377375Y (en) | 2009-04-10 | 2009-04-10 | Anti-reversing safety handle of diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920106777U CN201377375Y (en) | 2009-04-10 | 2009-04-10 | Anti-reversing safety handle of diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201377375Y true CN201377375Y (en) | 2010-01-06 |
Family
ID=41517482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920106777U Expired - Fee Related CN201377375Y (en) | 2009-04-10 | 2009-04-10 | Anti-reversing safety handle of diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201377375Y (en) |
-
2009
- 2009-04-10 CN CN200920106777U patent/CN201377375Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100106 Termination date: 20110410 |