CN202833740U - Clutch capable of preventing overloading - Google Patents
Clutch capable of preventing overloading Download PDFInfo
- Publication number
- CN202833740U CN202833740U CN 201220544486 CN201220544486U CN202833740U CN 202833740 U CN202833740 U CN 202833740U CN 201220544486 CN201220544486 CN 201220544486 CN 201220544486 U CN201220544486 U CN 201220544486U CN 202833740 U CN202833740 U CN 202833740U
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- CN
- China
- Prior art keywords
- link
- arc groove
- passive part
- driving link
- straight pin
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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 - Lifetime
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- Mechanical Operated Clutches (AREA)
Abstract
The utility model discloses a clutch capable of preventing overloading. The clutch capable of preventing unloading comprises a driving part, a driven part, a rotating part and a pressing device with rated pretightening force. The pressing device is connected with the driving part or the driven part. A connecting piece is arranged between the driving part and the driven part. The driving part and the driven part are respectively connected with the connecting piece in a clamping mode. The connecting piece is fixedly connected with the rotating part. The clutch capable of preventing overloading has the advantages of being simple in structure, convenient to machine and low in maintenance cost.
Description
Technical field
The utility model relates to a kind of mechanical transmission structure, and is particularly a kind of for the prevent overload clutch of restriction maximum delivered moment of torsion with protection drive unit and job safety.
Background technique
In the machine power transmission process, do not carry out under full load condition when working in order to ensure drive unit, the power setting of drive unit often all can leave surplus.Therefore, need to solve the problem that the restricted power driving torque surpasses need of work moment.
As Patent Office of the People's Republic of China December in 2009 notice of authorization on the 30th notice of authorization number be the patent application of CN100575732C, this Patent Application Publication a kind of locking plate and have the overload clutch of locking plate, this clutch comprises locking plate, locking plate has the configuration that powder metallurgy ground consists of, and this locking plate has a substantially invariable material wall thickness and has at least one and is configured in the device of taking that is used for rotary actuation on the inner circumference.The described locking plate of this patent application is taken untie-sell by three and is fixedly connected with pto＝power take-off, locking plate arranges three " U " shape projections that are connected as a single entity with locking plate towards the side of cylindrical gears, cylindrical gears arranges three " U " connected in stars that match with " U " shape projection towards the side of locking plate, the outer circumferential face of locking plate also is provided with three external frames with increased strength, similar diameter that is equivalent to the cylindrical gears root circle of this profile imitation.When carry-over moment reaches regulation moment big or small, when the clamping power between " U " shape projection and " U " connected in star is not enough to support the moment of transmission, " U " shape projection skids off " U " connected in star, between clamping block and the cylindrical gears relative sliding occurs, thereby realizes transmitting the purpose of regulation moment.Because the structure of locking plate is comparatively complicated, be difficult to realization by general machining, usually can only or forge by casting, and casting or forging locking plate surface Machining precision out be lower, so that the surface friction drag that relatively rotates between cylindrical gears and the locking plate is larger, be unfavorable for energy-conservation; It is larger to wear and tear when relatively rotating between cylindrical gears and the locking plate, can shorten the working life of cylindrical gears and locking plate; When relative sliding occurs, rub between cylindrical gears and the locking plate and can produce a large amount of heats, high temperature can worsen mechanically operated environment, in high temperature, understand accelerated ageing, distortion even inefficacy such as the Sealing that rubber is made, lubricating grease liquefies in high temperature and causes the generation of oil leakage phenomenon, and the part that plastics are made can softening cause the reduction of mechanical property in high temperature; The noise that sends when relative sliding occurs between cylindrical gears and the locking plate is higher, can affect operating personnel's physical and mental health; Because relative sliding directly occurs between cylindrical gears and the locking plate, so that both be easily damaged parts, cylindrical gears and locking plate manufacture cost are higher, thereby maintenance cost also can be higher.
The model utility content
For overcoming defects, the utility model provide a kind of simple in structure, easy to process, maintenance cost is cheap prevents overload clutch.
The technological scheme that its technical problem that solves the utility model adopts is:
A kind of overload clutch that prevents, comprise driving link, Passive part, rotating component, hold down gag with specified pretightening force, hold down gag is connected with driving link or Passive part, be provided with link between described driving link and the Passive part, link is connected with driving link, Passive part joint and clinging type respectively, and link is fixedly connected with rotating component.Prevent that overload clutch all is arranged on the rotating component of actuating unit usually; the hold down gag of clutch promotes driving link or Passive part; make driving link realize that by link and Passive part clamping is connected; maximum clamping power size between maximum clamping power between link and the driving link and link and the Passive part is generally unequal; the less side's of wherein clamping power maximum clamping moment equates with the maximum moment of regulation transmission; like this; when the moment of transmitting meets or exceeds the maximum moment of regulation; the less side's of clamping power clamping was lost efficacy; relative sliding occurs between the party and the link; make the transmitting torque of actuating unit can not continue to increase, thereby realize that restriction maximum delivered moment of torsion is with the purpose of protection drive unit and job safety.Because link is separate piece, can be set to the easily simple structure with arc surface of processing, to make things convenient for the processing of surface quality highi degree of accuracy, the surface hardness with link is treated to the hardness that is lower than driving link and Passive part simultaneously.Simple in structure like this, easy to process, cheap for manufacturing cost; To examine resistance less so that the slip of link and driving link or Passive part rubs for high-precision surface quality, thereby it is less to wear and tear, and fricative heat is also few, is beneficial to energy-conservationly, and the validity of the function of related components is guaranteed in and the maintenance of mechanical transmission environment; As relatively soft low cost of manufacture one side's of hardness link, preferential wear in the process of relative sliding, driving link or Passive part that manufacture cost is higher are protected, thereby reduce the maintenance cost that prevents overload clutch.Because link is fixedly connected with rotating component, so that link not only has the clamping connection function, also have simultaneously the effect of key, thereby can save key of the prior art, reduce manufacture cost.
As preferably, described link is straight pin.Straight pin is the easy structure of processing, and surface finishing is also very simple, if particularly utilize needle roller in the needle bearing as link, as long as annealing in process is made once in the surface, cost is very cheap.
Described link respectively with driving link, Passive part between maximum clamping power size can equate, also can be that the maximum clamping power of Passive part and link is less than the maximum clamping power between driving link and the link.As preferably, the maximum clamping power between described link and the driving link is less than the maximum clamping power between link and the Passive part.
As preferably, described hold down gag comprises the stage clip that an end can be spacing.Stage clip is common matured product, can buy everywhere on the market, and is cheap.One end of stage clip is fixedly connected on collar on the driving component of transmission device, and the other end of stage clip is pressed on driving link or the Passive part, utilizes the decrement of stage clip to come the big or small very convenient of control card relay.
As preferably, described driving link, the bi-side that Passive part is relative are respectively equipped with the first arc groove and the second arc groove that matches with straight pin, and described straight pin is arranged in the first arc groove and the common cavity that forms of the second arc groove.The processing of arc groove is simple, convenient, with low cost.
As preferably, the degree of depth that described straight pin sinks to the first arc groove sinks to the degree of depth of the second arc groove less than straight pin.
The beneficial effects of the utility model are: simple in structure, easy to process, maintenance cost is cheap.
Description of drawings
Fig. 1 is the main TV structure cross-sectional schematic that the utility model is applied to electric hammer;
Fig. 2 is the structural representation of Fig. 1 middle gear;
Fig. 3 is the structural representation of Fig. 1 guide ring;
Fig. 4 is the structural representation of pivoted housing among Fig. 1.
Among the figure: 1, gear, the 11, first arc groove; 12, groove; 2, cavity, 3, needle roller, 4, pivoted housing, 41, the circular arc hole; 42, blind hole; 5, jump ring, 6, back-up ring, the 61, second arc groove; 7, stage clip, 8, collar.
Embodiment
Below by specific embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment: a kind of overload clutch that prevents is applied on the pivoted housing in the electric hammer actuating unit.As shown in Figure 1, comprise gear 1, annular retaining ring 6, helical stage clip 7, annular collar 8, C shape jump ring 5, collar 8, stage clip 7, gear 1, back-up ring 6 is socketed on the pivoted housing 4 respectively successively with gap, gear 1 is provided with the groove 12 that matches with back-up ring 6 towards a side of back-up ring 6, back-up ring 6 is positioned at the groove 12 of gear 1, such as Fig. 1, Fig. 2, shown in Figure 3, groove 12 bottom surfaces and back-up ring 6 one sides relative with groove 12 bottom surfaces are respectively equipped with the first arc groove 11, the second arc groove 61, the first arc groove 11, the second arc groove 61 common circular cylindrical cavities 2 that form, cavity 2 quantity are three, three cavitys 2 are uniform along groove 12 bottom surface annulars, are provided with the needle roller 3 that matches with cavity 2 in the cavity 2.So that the power of driving mechanism can be by gear 1, needle roller 3, pass to back-up ring 6.As shown in Figure 1, needle roller 3 degree of depth that sinks to the first arc groove 11 sinks to the degree of depth of the second arc groove 61 less than needle roller 3.Because gear 1 generally all is through heat treated, its hardness, wear resistance are greater than the needle roller 3 of annealed processing, the degree of depth setting of needle roller 3 being sunk to the first arc groove 11 is sunk to the degree of depth of the second arc groove 61 less than needle roller 3, is chosen on the needle roller cheap for manufacturing cost 3 so that skimming wear can be expected.Such as Fig. 1, shown in Figure 4, pivoted housing 4 outer circumferential faces are provided with blind hole 42 in needle roller 3 positions, and needle roller 3 stretches in the blind hole 42 towards an end of pivoted housing 4.So that needle roller 3 can play the pin key effect of back-up ring 6 splines simultaneously.Pivoted housing 4 outer circumferential faces are respectively arranged with annular circular arc hole 41 in the outside of back-up ring 6, collar 8, two circular arcs are cheated 41 and interiorly are connected with jump ring 5 clampings respectively, distance between two circular arcs hole 41 is less than the distance between the opposing bi-side of collar 8, back-up ring 6, make stage clip 7 have specified pretightening force, specified Maximum Torque power when this pretightening force promotes gear 1 and clamping power between the needle roller 3 and equals electric hammer and work.
Above-described embodiment is a kind of better scheme of the present utility model, is not that the utility model is done any pro forma restriction, also has other variant and remodeling under the prerequisite that does not exceed the technological scheme that claim puts down in writing.
The content that is not described in detail in this specification belongs to the known prior art of those skilled in the art.
Claims (6)
1. one kind prevents overload clutch, comprise driving link, Passive part, rotating component, hold down gag with specified pretightening force, hold down gag is connected with driving link or Passive part, it is characterized in that: be provided with link between described driving link and the Passive part, link is connected with driving link, Passive part joint and clinging type respectively, and link is fixedly connected with rotating component.
2. the overload clutch that prevents according to claim 1, it is characterized in that: described link is straight pin.
3. the overload clutch that prevents according to claim 1, it is characterized in that: the maximum clamping power between described link and the driving link is less than the maximum clamping power between link and the Passive part.
4. according to claim 1 and 2 or the 3 described overload clutchs that prevent, it is characterized in that: described hold down gag comprises the stage clip that an end can be spacing.
5. the overload clutch that prevents according to claim 2, it is characterized in that: described driving link, the bi-side that Passive part is relative are respectively equipped with the first arc groove and the second arc groove that matches with straight pin, and described straight pin is arranged in the first arc groove and the common cavity that forms of the second arc groove.
6. the overload clutch that prevents according to claim 5 is characterized in that: the degree of depth that described straight pin sinks to the first arc groove sinks to the degree of depth of the second arc groove less than straight pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220544486 CN202833740U (en) | 2012-10-23 | 2012-10-23 | Clutch capable of preventing overloading |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220544486 CN202833740U (en) | 2012-10-23 | 2012-10-23 | Clutch capable of preventing overloading |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202833740U true CN202833740U (en) | 2013-03-27 |
Family
ID=47945453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220544486 Expired - Lifetime CN202833740U (en) | 2012-10-23 | 2012-10-23 | Clutch capable of preventing overloading |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202833740U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106438752A (en) * | 2016-10-20 | 2017-02-22 | 无锡市神力齿轮冷挤有限公司 | Rubber friction type one-way clutch |
| CN112747050A (en) * | 2020-09-22 | 2021-05-04 | 武汉纺织大学 | One-way rotating mechanism with overload protection function |
-
2012
- 2012-10-23 CN CN 201220544486 patent/CN202833740U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106438752A (en) * | 2016-10-20 | 2017-02-22 | 无锡市神力齿轮冷挤有限公司 | Rubber friction type one-way clutch |
| CN112747050A (en) * | 2020-09-22 | 2021-05-04 | 武汉纺织大学 | One-way rotating mechanism with overload protection function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130327 |