CN1095001A - Tooth assembly with leaf spring retainer - Google Patents
Tooth assembly with leaf spring retainer Download PDFInfo
- Publication number
- CN1095001A CN1095001A CN 94103160 CN94103160A CN1095001A CN 1095001 A CN1095001 A CN 1095001A CN 94103160 CN94103160 CN 94103160 CN 94103160 A CN94103160 A CN 94103160A CN 1095001 A CN1095001 A CN 1095001A
- Authority
- CN
- China
- Prior art keywords
- pin
- spring
- sheet spring
- cutter tooth
- tooth
- 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
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- Component Parts Of Construction Machinery (AREA)
- Springs (AREA)
- Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
Abstract
A kind of tooth assembly, thus general the use under cutter tooth is the situation of a high abrasive element of this assembly can easily be changed cutter tooth.In structure of the present invention, be provided with a flat substantially leaf spring retainer, and it is arranged in a pin and is horizontal clamper opening.During mount pin, the sheet spring is forced to deflection, makes the required power of sheet spring deflection just effectively pin be remained on the power of its installation site.One central groove is arranged, in case when pin was in its mounted position, its size was enough to hold the sheet spring part that is in contact with it in pin.When in a single day the sheet spring falls into central groove, the amount of deflection or the amount of bow of sheet spring just reduce, thereby the life-span of sheet spring is increased.
Description
The present invention relates generally to a kind of tooth assembly with a cutter tooth, a connector and a clamping device, relates to one more particularly and comprises that one is used for a pin is fixed in the clamping device of the sheet spring of its installation site.
Usually, tooth assembly all comprises a cutter tooth and a connector, and they all use the clamping device of certain form to be connected to each other together.In most of the cases, this clamping device comprises that the clamper of a pin and certain form is to be fixed on this pin on its installation site.Be used for that the clamper that this pin is fixed on its installation site is had many different forms.In some situation, clamper is the spring part of a bending, and this spring part places a hole parallel with pin, and in installation process, it is compressed between the sidewall and pin itself of pin-and-hole, therefore, an active force is applied on the pin so that this pin is fixed on its installation site.In these situations, pin-and-hole often designs more greatly to hold pin and clamper simultaneously, therefore, has weakened the intensity of the front end of this connector.And in these were used, it was difficult making chucking power of pin acquisition necessity and the useful life longevity of keeping simultaneously than long clamper.And by adopting a clamper bending or that be shaped to obtain required chucking power and to keep the useful life longevity of clamper simultaneously difficult especially.Simultaneously, use a clamper bending or that be shaped generally all to require a bigger clamper opening, result to make the intensity of cross section of the front end of clamping become more weak.
The objective of the invention is to overcome aforesaid one or more problem.
According to one aspect of the present invention, the invention provides a kind of tooth assembly, it comprises a cutter tooth, a connector, a slice spring and a pin.The opening and one that this cutter tooth has an a pair of alignment is located at the cavity between the right opening of this aligned openings.This connector has a leading section to cooperate with the cutter tooth chamber effectively and to constitute the plane of passing it.One pin-and-hole basically along this plane in line and the clamper opening depart from parallel this plane and and pin-and-hole lateral alignment and intersecting.This connector also has a pair of position contact area thereon, and each zone of contact area centering all is positioned on the opposite side of pin-and-hole.This sheet spring is flat substantially and opposed end arranged, and be located at the clamper opening of contact area to effective connector that contacts in.This pin is located in aligned openings and the pin-and-hole, and effectively cutter tooth is fixed on this connector.This pin also effectively the sheet spring generally is engaged on contact area between force the sheet spring to be adjacent to each contact area and force the deflection of sheet spring, provide a confining force effectively to pin.Act on this confining force on the pin will lock lean against aligned openings to or the inner surface portion of pin-and-hole on.
The invention provides a tooth assembly, it has a clamping device; This clamping device comprises that one is used for cutter tooth is fixed to pin on the connector, and the flat basically sheet spring of a horizontally set, this sheet spring is delivered to a chucking power on the pin effectively and is tight against at the connector front end so that pin is remained on its installation site and with cutter tooth.Because adopted a flat substantially sheet spring, be used for being provided with the necessary opening size of sheet spring and just can reduce.And the material of being removed from the connector front end for the opening that is formed for the sheet spring is to remove along the central axis of applied force.This central axis is located substantially on the upper surface of connector leading section and the centre between the lower surface.Therefore, the weakening of the intensity of the leading section that is caused by sheet spring opening is with regard to corresponding minimizing.Equally, because sheet spring opening and pin-and-hole are horizontal, thereby further strengthened the advantage of using the plain film spring.
Fig. 1 is the schematic perspective view of tooth assembly, there is shown all preceding parts of assembled state.
Sectional view when Fig. 2 is in its confined state for the parts among Fig. 1, it is along a section plan parallel with the axis of pin;
Fig. 3 is in its confined state for the parts among Fig. 1 and along the cross-sectional view of 3-3 line among Fig. 2;
Fig. 4 is the partial enlarged drawing similar to Fig. 2, but is an alternative embodiment of the invention shown in the figure.
Referring to accompanying drawing,, there is shown a tooth assembly 10 particularly referring to Fig. 1,2 and 3.This tooth assembly 10 comprises the sheet spring 18 that a cutter tooth 12, one connectors 14, a pin 16 and is flat basically.This cutter tooth 12 has a leading section 22, and it can mesh with processed material effectively, also has a rearward end 24, and it can be connected to cutter tooth 12 on the connector 14 effectively.
This connector 14 has a leading section 34, is formed with a pin-and-hole 38 with inner surface 39 on it, roughly passes the horizontal vertical plane 36 at pin-and-hole 38 centers in addition.One clamper opening 40 is formed in the leading section 34 and departs from but be parallel to plane 36, and with pin-and-hole 38 lateral alignment with intersect.A pair of contact zone 42,44 is positioned at two opposite ends of clamper opening 40.Clamper opening 40 has an inner surface portion, and it and plane 36 are left and opened, and the whole length of extend through clamper opening 40.From an end of clamper opening 40,36 open so that clamper opening 40 enlarges gradually towards the mid point of connector leading section 34 from the plane on the surface of this part 46.Opposite end from the mid point of connector leading section 34 to clamper opening 40, the surface of this part 46 along towards the plane 36 direction open so that the size of clamper opening 40 reduces gradually.Size at opposite two ends clamper opening 40 equates.A pair of contact area 42,44 roughly is formed on the opposite end near part 46.
This plain film spring 18 is to be made by the steel of carbon containing at least 0.5%, and hardens between the HRC 40-50.The section modulus of sheet spring 18 is at 50mm
3(0.003 cubic inch) is to 940mm
3In the scope of (0.060 cubic inch).The maximum defluxion (bending) of permanent deformation does not take place at the 3mm(0.125 inch in sheet spring 18) to the 12.7mm(0.500 inch) between.As everyone knows, between the width of sheet spring 18 and its section modulus, exist a direct linear relationship; For example, if thickness is constant, the width of sheet spring 18 increases twice, and then section modulus also increases by two trainings.Also have certain relation between sheet spring thickness and section modulus, for example, if the thickness of sheet spring 18 is increased twice, then section modulus just increases by four times.Equally, increase by three times as the thickness of chankings spring 18, section modulus just increases by nine times.As everyone knows, this is because section modulus is that square ground increases with the increase of sheet spring thickness.As for the amount of deflection or the amount of bow of sheet spring 18, in a given length and its plastic limit, amount of deflection reduces with the increase of section modulus.Concerning the material of the sheet spring 18 of hardness in the HRC38-50 scope, typical yield strength is at 1000MPa(150,000psi) to 1585MPa(230, in scope 000psi).
Central authorities at pin 16 outer peripheral faces are formed with a groove 58, and this pin 16 opening of being placed on alignment to 26,28 and pin-and-hole 38 in.By meshing flake spring 18(substantially along the engagement of the stage casing of sheet spring 18 length) force its opposed end 52,54 to be tight against on each contact area 42,44 of the opposite end that is positioned at clamper opening 40 this pin 16 is fixed to cutter tooth 12 on the connector 14 effectively.Pin 16 central groove 58 has hypotenuse and cooperates with sheet spring 18 effectively, so that when pin 16 is moved to complete mounted position, just allow it to turn back to normal plan-position.Can increase the service life of sheet spring 18 more longways by deflection degree is descended, this be because the life-span of material directly relevant with this material suffered stress in certain hour.So if the amount of stress height, service life is just shorter, if stress reduces, service life is just longer.Therefore, when pin 16 installs, this sheet spring 18 just is maintained under the lower amount of stress.If but in use or under situation thereafter to take out pin 16, just must apply a bigger power so that sheet spring 18 is outwardly-bent once more.Only in the process of installation and removal pin 16, sheet spring 18 just can be subjected to higher amount of stress.Therefore, just can significantly increase the service life of plain film spring 18.
As shown in the embodiment of the present invention, the power that acts on the sheet spring 18 on the pin 16 is delivered to cutter tooth 12 by aligned openings to 26,28 inner surface 29 cutter tooth 12 is closely contacted with engagement end portion 34.In this main embodiment, 30 bottom is adjacent to cutter tooth 12 and contacts in the chamber in the end of leading section 34.Yet, should be appreciated that cutter tooth 12 contacts also with being adjacent to of 34 of leading sections can not break away from essence of the present invention at other position.
Now see also Fig. 4.It shown in the figure an alternative embodiment of the invention.Among Fig. 4 among every and Fig. 1-3 identical parts all adopt identical numbering.A pair of jut 60,62 is arranged on the cutter tooth 12.Jut 60 is arranged in the opening 26 of an alignment and extends from its inner surface 29.62 ones of another juts are arranged in another aligned openings 28, and extend from its inner surface 29.Each jut 60,62 all is positioned on the part of the inner surface on the side on the plane 36 relative with sheet spring 18.
Circumferential surface at pin 16 is formed with a pair of groove 64,66.A groove 64 is positioned near on the end of pin 16, and another groove 66 is positioned near on the other end of pin 16.This groove the time can hold projection on the aligned openings 26,28 that is positioned at cutter tooth 12 to 60,62 to 64,66 in assembling.Should be realized that the shape of jut 60,62 and the groove 64,66 that cooperates with it also can be different from the appearance shown in the figure, this can not break away from essence of the present invention.
Should be appreciated that tooth assembly also can have different forms and can not break away from essence of the present invention.For example, central groove 58 can save.Equally, contact area can inwardly be provided with along the length of grasp opening 40, from its each end 42,44 and make the required power of sheet spring 18 deflections with increase.In addition,, still, should be realized that also that the present invention also can have a middleware that is connected with connector and not break away from essence of the present invention even cutter tooth 12 of the present invention as previously mentioned is connected on the connector 14.In the tooth assembly system of the connector that comprises a cutter tooth, a middleware and a fastening means, can adopt the pin of same type to be connected these different parts with clamper.In addition, in the drawings, pin 16 is with aligned openings 26,28 inner surface to be contacted, and still, it should be understood that pin 16 also can contact with pin-and-hole 38 inner surfaces of leading section 34.It should be understood that in some cases, cutter tooth 12 needn't be near leading section 34.Again, pin 16 shape of cross section can change and can not break away from essence of the present invention; For example, pin can be foursquare, rectangle, hexagon or other shape.If pin is not circular, then corresponding groove 58,64,66 can be just passable with the simple groove that only is positioned on the one side.
In the operating process of tooth assembly 10, the effect of sheet spring 18 is that pin 16 is remained on its installation site, thereby cutter tooth 12 is fixed on the connector 14 firmly.Sheet spring 18 is finished like this.Be placed at cutter tooth 12 and make on the connector 14 after the connector end enters in the chamber 30, sheet spring 18 is inserted in the opening 40 of clampers.In case after cutter tooth 12 was installed on the connector 14, sheet spring 18 just was clipped in the clamper opening 40 by the side of cutter tooth 12.Then, pin 16 is inserted aligned openings among one in 26,28, and enter progressively that the ends up to pin 16 contact with sheet spring 18 in the clamper opening 40.One jiao of pin 16 forward position edge joint contact spring 18 stops pin 16 further motion in pin-and-hole 38.At this moment, applying an outside in the end of pin 16 forces pin 16 to cross sheet spring 18 and makes 18 deflections of sheet spring.Sheet spring 18 is forced to deflection to such degree, promptly allows the outer surface of pin 16 walk around a side of the sheet spring 18 that contacts with pin 16.When pin 16 arrived its complete mounted position, sheet spring 18 just fell into central groove 58.In this position, the stress reduction on the sheet spring 18 is sold 16 and is then remained on firmly on its installation site.This moment, this sheet spring 18 still was in the part deflected, so just continued to have a power to be applied on the pin 16, thereby the hole that is applied to alignment simultaneously is on 26,28 the inner surface 29.This power is enough to force cutter tooth to be adjacent to leading section 34 firmly.
Often in the working angles of tooth assembly 10, cutter tooth is enough to make pin 16 oneself " to walk " its original installation site with respect to the tendency of the motion of connector.But in the present invention, this cutting force that acts on the pin 16 is offseted by such power,, make the crooked degree that breaks away from central groove of sheet spring 18 energy that is, other external force must be arranged.Therefore, pin 16 is remained on its installment state firmly, must add that enough power just can make pin 18 outwardly-bent and loose from central groove 58 at an end of pin 16.
In an example, plain film spring 18 hardness are HRC42, and length is the 206mm(8.12 inch), width is the 35mm(1.38 inch) and thickness be the 6.35mm(0.25 inch).Its YIELD STRENGTH is similar to 1170MPa(170,000 pound/square inch).When amount of deflection (bending) is the 6.35mm(0.25 inch) time, the power that is added on the pin 16 is similar to the 5KN(1200 pound).As previously mentioned, the steel changes of properties can be led the variation of the quantity that acts on the power on the pin 16, for example, if the yield strength of above-mentioned plain film spring 18 is similar to 1585MPa(230,000 pound/square inch), and amount of deflection (bending) is the 8.6mm(0.31 inch), hardness is similar to HRC50, the power that acts on a spring 18 so will be similar to the 7.2KN(1630 pound).
See also Fig. 4.The assembling of each parts all is the same with dismounting among the figure, and the effect of each parts also all is the same.But, in structure shown in Figure 4, in order to install and/or release pin 16, if the size of each parts and material be identical with shown in Fig. 1 to 3 all, that will apply a bigger external force, must move on to aligned openings a side of 26,28 is held projection on 60,62 the position so that a pair of groove 64,66 is moved to one because sell 16.This extra eccentric motion causes sheet spring 18 to be forced to deflection one bigger bending measuring, thereby has increased the required power of sheet spring 18 extra deflections that makes.Although the pin among Fig. 4 16 has a central groove 58 and a pair of position groove 64,66 thereon, it should be understood that this central groove 58 can omit and can not break away from essence of the present invention.And, a projection 60 and a respective grooves 64 be can also only adopt and another projection 62 and respective grooves 66 and/or central groove 58 do not needed.
According to aforesaid content, apparent structure of the present invention can provide a kind of like this tooth assembly, and its clamping device is simple in structure, can have sufficiently high chucking power to pin simultaneously, thereby cutter tooth can be fixed on the connector firmly.In addition, be horizontal grasp opening 40 owing to have, thereby can use plain film spring 18 easily with pin-and-hole 38.
Others of the present invention, purpose and advantage can obtain by the research to accompanying drawing, institute's disclosure and appending claims.
Claims (7)
1, a tooth assembly, it comprises:
One cutter tooth has a pair of aligned openings and that an inner surface arranged respectively and is located at chamber between each right opening of described aligned openings on it;
One connector, it has a leading section that cooperates with the cutter tooth chamber effectively and a pin-and-hole, this pin-and-hole has an inner surface and to pass its horizontal vertical plane, described pin-and-hole substantially along this plane in line, one clamper opening departs from but parallel described plane and with described pin-and-hole lateral alignment with intersect and have a pair of contact area that is positioned on the described leading section, and each of contact area centering is positioned on the relative side of described pin-and-hole;
One flat basically sheet spring, it have relative end and be located at described contact area in effective clamper opening that contacts; And
One opening of being located at described alignment to described pin-and-hole in pin, it is fixed to described cutter tooth on the described connector effectively, pin with described spring be engaged on contact area between, force described spring to be adjacent to described each contact area and make described spring deflection, effectively a chucking power is delivered to thus on the described pin and locks on the inner surface that is against right inner surface portion of described aligned openings or described pin-and-hole described.
2, tooth assembly as claimed in claim 1 is characterized in that, described spring made by the steel material of hardness in the HRC40-50 scope.
3, tooth assembly as claimed in claim 2 is characterized in that, the section modulus of described spring is at 50mm
3-1200mm
3In the scope.
4, tooth assembly as claimed in claim 3 is characterized in that, maximum defluxion in described spring or amount of bow are in the 3mm-12.7mm scope.
5, tooth assembly as claimed in claim 4 is characterized in that, thereby the power that described spring props up described pin is remained on the described connector described cutter tooth the described right inner surface portion of aligned openings that leans against described cutter tooth that locks firmly.
6, tooth assembly as claimed in claim 5, it is characterized in that, described cutter tooth has a pair of jut, a described jut is arranged in one inner surface portion of described aligned openings, another described jut is arranged in another inner surface portion of described aligned openings, described each jut all is positioned at the inner surface portion of each described aligned openings of a side on the plane 36 of a described relatively spring, and described pin has a pair of groove on its outer peripheral face, one end of a close described pin of described groove centering is to hold a described jut, and the other end of the close described pin of described another groove is to hold described another jut.
7, tooth assembly as claimed in claim 6, it is characterized in that, described pin is roughly along having another groove holding the part with described spring of described pin contacts effectively on the outer peripheral face at its length middle part, thereby reduces the life-span that has prolonged described spring so that be in the amount of deflection or the amount of bow of the described spring that installs the position fully.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/058,087 US5272824A (en) | 1993-05-10 | 1993-05-10 | Tooth assembly with leaf spring retainer |
| US058,087 | 1993-05-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1095001A true CN1095001A (en) | 1994-11-16 |
Family
ID=22014599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94103160 Pending CN1095001A (en) | 1993-05-10 | 1994-03-21 | Tooth assembly with leaf spring retainer |
Country Status (5)
| Country | Link |
|---|---|
| CN (1) | CN1095001A (en) |
| AU (1) | AU668282B2 (en) |
| CA (1) | CA2119396A1 (en) |
| RU (1) | RU94016164A (en) |
| ZA (1) | ZA941928B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102794729A (en) * | 2011-04-15 | 2012-11-28 | 尖端品牌公司 | Flex-head wrench |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA3050939C (en) * | 2009-12-11 | 2021-10-19 | Cqms Pty Ltd | A lock assembly for an excavator wear member |
-
1994
- 1994-03-18 CA CA 2119396 patent/CA2119396A1/en not_active Abandoned
- 1994-03-18 ZA ZA941928A patent/ZA941928B/en unknown
- 1994-03-21 CN CN 94103160 patent/CN1095001A/en active Pending
- 1994-04-12 AU AU59447/94A patent/AU668282B2/en not_active Ceased
- 1994-05-05 RU RU94016164/14A patent/RU94016164A/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102794729A (en) * | 2011-04-15 | 2012-11-28 | 尖端品牌公司 | Flex-head wrench |
| US9079297B2 (en) | 2011-04-15 | 2015-07-14 | Apex Brands, Inc. | Flex-head wrench |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2119396A1 (en) | 1994-11-11 |
| AU668282B2 (en) | 1996-04-26 |
| ZA941928B (en) | 1994-10-18 |
| AU5944794A (en) | 1994-11-17 |
| RU94016164A (en) | 1996-08-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |