CN111981057A - Friction type torsion protector - Google Patents
Friction type torsion protector Download PDFInfo
- Publication number
- CN111981057A CN111981057A CN202010746779.7A CN202010746779A CN111981057A CN 111981057 A CN111981057 A CN 111981057A CN 202010746779 A CN202010746779 A CN 202010746779A CN 111981057 A CN111981057 A CN 111981057A
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- China
- Prior art keywords
- locking
- ring
- thimble
- ejector pin
- locking ring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D43/00—Automatic clutches
- F16D43/02—Automatic clutches actuated entirely mechanically
- F16D43/20—Automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure
- F16D43/21—Automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure with friction members
- F16D43/213—Automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure with friction members with axially applied torque-limiting friction surfaces
- F16D43/215—Automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure with friction members with axially applied torque-limiting friction surfaces with flat friction surfaces, e.g. discs
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pivots And Pivotal Connections (AREA)
Abstract
The invention discloses a friction type torsion protector which comprises a main body sleeve, a component locking device, an overload protection device and a transmission component, wherein a shaft hole is formed in the main body sleeve; the component locking device comprises a fixing ring, a locking ring and a positioning ring, wherein the fixing ring and the positioning ring are arranged on the periphery of the main body sleeve at intervals, and the locking ring is arranged between the fixing ring and the positioning ring and can reciprocate in the axial direction of the shaft hole; the overload protection device comprises a bearing and an ejector pin mechanism, the bearing is arranged between a fixing ring and a locking ring, the axis of the bearing is superposed with the axis of a shaft hole, a plurality of ejector pin mechanisms are arranged on the positioning ring, each ejector pin mechanism is provided with an ejector pin and a locking part, the ejector pin can reciprocate in the axis direction of the shaft hole, the locking part can reciprocate in the axis direction vertical to the ejector pin, and the ejector pin mechanism further comprises a clamping part arranged on the ejector pin; and the transmission component is sleeved on the bearing, and the axis of the transmission component is superposed with the axis of the bearing.
Description
Technical Field
The invention belongs to the technical field of machining, and particularly relates to a friction type torsion protector.
Background
The mechanical transmission generally comprises a power mechanism and a transmission mechanism, most of the power mechanisms are generally driven by motors at present, the motors are driven by rotating shafts, the rotating shafts have torque in transmission, and other transmission mechanisms can generate certain torque under the action of the torque.
At present, a torque limiter is generally arranged between a power mechanism and a transmission mechanism to prevent the power mechanism from being damaged due to overlarge torque between the power mechanism and the transmission mechanism under some emergency situations, and the current common torque limiters are generally ball type torque limiters and friction type torque limiters; when the existing friction type torque limiter is overloaded, a member generates friction slip between a driving side and a driven side, but a large residual torque is still left when the friction type torque limiter is overloaded and slips, so that a large friction force is generated between the member and a friction plate, the member and the torque limiter are abraded, after the friction type torque limiter is used for a long time, the axes of the member and the torque limiter are possibly deviated due to excessive abrasion, the transmission is unstable, when the torque limiter is overloaded instantaneously, a power mechanism and the torque limiter inevitably receive a large torque, the excessive instantaneous torque can damage the power mechanism and the torque limiter, and unnecessary economic loss is brought to a user.
The above description is included in the technical recognition scope of the inventors, and does not necessarily constitute the prior art.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide a friction type torque protector, which is separated from a transmission mechanism during overload, so that the transmission mechanism still keeps a motion state, the torque applied to a power mechanism and a torque limiter is reduced, overload protection is more stable, the equipment damage rate is reduced, and the friction type torque protector is not easily worn after long-term use, has a long service life and strong practicability, and has a wide market prospect.
In order to achieve the purpose, the invention provides a friction type torsion protector which is characterized by comprising a main body sleeve, a torsion spring and a torsion spring, wherein the main body sleeve is provided with a shaft hole and is arranged on a transmission shaft through the shaft hole; the component locking device comprises a fixing ring, a locking ring and a positioning ring, wherein the fixing ring and the positioning ring are arranged on the periphery of the main body sleeve at intervals, and the locking ring is arranged between the fixing ring and the positioning ring and can reciprocate in the axial direction of the shaft hole to be close to or far away from the fixing ring; the overload protection device comprises a bearing and an ejector pin mechanism, wherein the bearing is arranged between the fixing ring and the locking ring, the axis of the bearing is superposed with the axis of the shaft hole, the ejector pin mechanisms are arranged on the positioning ring, the ejector pin mechanism is provided with an ejector pin and a locking part, the ejector pin can reciprocate in the axis direction of the shaft hole to support the locking ring to be close to the fixing ring, the locking part can reciprocate in the axis direction vertical to the ejector pin, the ejector pin mechanism also comprises a clamping part which is arranged on the ejector pin and is matched with the locking part, when the locking part is clamped with the clamping part, the locking part limits the ejector pin to enable the ejector pin to support the locking ring, and when the ejector pin is subjected to torsion exceeding preset bearing torsion, the thimble pushes the locking part to be separated from the clamping part, so that the thimble does not support the locking ring any more; and the transmission member is sleeved on the bearing, the axis of the transmission member is superposed with the axis of the bearing, when the thimble supports the locking ring, the locking ring and the fixing ring extrude the transmission member so as to fixedly mount the transmission member on the friction type torsion protector, so that the driving device drives the friction type torsion protector to rotate around the shaft hole through the transmission member, and further drives the transmission shaft to rotate, and when the thimble does not support the locking ring any more, the transmission member can rotate around the axis of the transmission member through the bearing.
In one example, the thimble mechanism further includes a thimble elastic element, a locking elastic element, and a thimble sleeve, the thimble elastic element is disposed between the thimble sleeve and the thimble and generates a force far from the locking ring to the thimble, and the locking elastic element is disposed between the locking part and the thimble sleeve and generates a force close to the thimble to the locking part.
In one example, one end of the thimble supporting the locking ring is in a circular arc shape.
In one example, a groove is provided on the locking ring at the position where the locking ring abuts against the thimble.
In one example, the body cover further includes a limit step having a plurality of elastic member holes opened therein, and a locking ring elastic member disposed between the elastic member holes and the locking ring and generating a force to the locking ring away from the limit step.
In one example, the periphery at both ends of the main body sleeve is also provided with a plurality of rotating shaft fixing holes communicated with the shaft hole, and the corresponding positions on the positioning ring are provided with screw holes which are coaxial with the rotating shaft fixing holes, so that the friction type torsion protector is arranged on the transmission shaft through the shaft hole.
In one example, the friction type torsion protector further comprises an extrusion layer disposed on opposite sides of the fixing ring and the locking ring.
The friction type torsion protector provided by the invention can bring the following beneficial effects:
1. when the driving device is overloaded due to sudden stop or other reasons, the thimble can be subjected to torsion exceeding the preset torsion, the thimble pushes the locking part to be separated from the clamping part, the locking ring is not supported any more, the driving device can not drive the transmission shaft to rotate through the transmission member, and further the transmission member can rotate around the axis of the transmission member through the bearing, the torsion received by the driving device and the friction type torsion protector due to overload is reduced, the overload protection process is more stable, the equipment damage rate is reduced, the thimble is not easy to wear after long-term use, the service life is prolonged, the practicability is strong, and the thimble has a wide market prospect.
2. The ejector pin can be quickly separated from the locking ring by arranging the ejector pin elastic piece when being overloaded, the ejector pin is prevented from being damaged by overlarge torque, the overload protection process is more stable, the damage rate of the ejector pin is reduced, the service life is prolonged, and the practicability is high.
3. One end of the ejector pin supporting locking ring is arc-shaped, so that friction force between the ejector pin and the locking ring when the ejector pin is separated from overload is reduced, the damage rate of the ejector pin is reduced, the service life is prolonged, and the practicability is high.
4. The groove is formed in the position, abutted to the ejector pin, of the locking ring, so that the ejector pin can support the locking ring more stably, the locking ring can extrude a transmission member more stably, the working stability of the friction type torsion protector is improved, and the practicability is high.
5. Make the locking ring can be faster when transshipping break away from the transmission component through setting up locking ring elastomeric element, prevent that the locking ring from receiving too big moment of torsion and wearing and tearing, make overload protection process more stable, reduce the spoilage, the increase of service life is long, and the practicality is strong.
6. Through setting up the pivot fixed orifices, make friction formula torque protector install in the transmission shaft more steadily, damage friction formula torque protector when preventing overload protection, increase of service life, the practicality is strong.
7. Through setting up the extrusion layer, make solid fixed ring and locking ring extrude the transmission component more steadily, make drive arrangement more stable drive transmission shaft, prevent because of the installation unstable wearing and tearing friction formula torsion protector, increase of service life, the usability is strong.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a front view of a friction type torsion protector of the present invention;
FIG. 2 is a right side view of a friction torque protector of the present invention;
FIG. 3 is a cross-sectional view of FIG. 2;
FIG. 4 is an enlarged view of portion A of FIG. 3;
FIG. 5 is an enlarged view of portion B of FIG. 3;
fig. 6 is a cross-sectional view of a friction type torsion protector according to the present invention when a thimble supports a locking ring;
fig. 7 is an enlarged view of the portion C in fig. 6.
In the figure: 1-main body sleeve, 11-shaft hole, 12-limit step, 121-elastic part hole, 13-locking ring elastic part, 14-rotating shaft fixing hole, 2-component locking device, 21-fixing ring, 22-locking ring, 221-groove, 23-positioning ring, 231-screw hole, 3-overload protection device, 31-bearing, 32-thimble mechanism, 321-thimble, 322-locking component, 323-clamping part, 324-thimble elastic part, 325-locking elastic part, 326-thimble sleeve, 4-transmission component and 5-extrusion layer.
Detailed Description
In order to more clearly explain the overall concept of the invention, the following detailed description is given by way of example in conjunction with the accompanying drawings.
In the description of the present invention, it is to be understood that the terms "central," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like are used in the indicated orientations and positional relationships based on the drawings for ease of description and simplicity of description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. In the description of the present specification, reference to the description of the terms "one aspect," "some aspects," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the aspect or example is included in at least one aspect or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same solution or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more aspects or examples.
As shown in fig. 1 to 7, an embodiment of the present invention provides a friction type torsion protector, which includes a main body cover 1, a member locking device 2, an overload protection device 3, and a transmission member 4. Wherein, the main body sleeve 1 is provided with a shaft hole 11, and the main body sleeve 1 is arranged on the transmission shaft through the shaft hole 11; the member locking device 2 comprises a fixing ring 21, a locking ring 22 and a positioning ring 23, wherein the fixing ring 21 and the positioning ring 23 are arranged at the periphery of the main body sleeve 1 at intervals, the locking ring 22 is arranged between the fixing ring 21 and the positioning ring 23 and can reciprocate in the axial direction of the shaft hole 11 to be close to or far away from the fixing ring 21; the overload protection device 3 includes a bearing 31 and a thimble mechanism 32, the bearing 31 is disposed between the fixing ring 21 and the locking ring 22, the axis of the bearing 31 coincides with the axis of the shaft hole 11, a plurality of thimble mechanisms 32 are disposed on the positioning ring 23, the thimble mechanism 32 has a thimble 321 and a locking member 322, the thimble 321 can reciprocate in the axial direction of the shaft hole 11, so as to support the locking ring 22 close to the fixing ring 21, the locking part 322 can reciprocate in the direction perpendicular to the axis of the thimble 321, the thimble mechanism 32 further includes a clamping part 323 arranged on the thimble 321 and adapted to the locking part 322, when the locking member 322 is engaged with the engaging portion 323, the locking member 322 limits the position of the thimble 321, so that the thimble 321 supports the locking ring 22, when the torque force applied to the thimble 321 exceeds the preset torque force, the thimble 321 pushes the locking member 322 to separate from the clamping portion 323, so that the thimble 321 no longer supports the locking ring 22; and the transmission member 4 is sleeved on the bearing 31, and the axis of the transmission member 4 coincides with the axis of the bearing 31, when the thimble 321 supports the locking ring 22, the locking ring 22 and the fixing ring 21 press the transmission member 4 to fixedly mount the transmission member 4 on the friction type torsion protector, so that the driving device drives the friction type torsion protector to rotate around the shaft hole 11 through the transmission member 4, and further drives the transmission shaft to rotate, and when the thimble 321 no longer supports the locking ring 22, the transmission member 4 can rotate around the axis thereof through the bearing 31. When the driving device is overloaded due to sudden stop or other reasons, the thimble 321 is subjected to a torque force exceeding a preset torque force, the thimble 321 pushes the locking part 322 to be separated from the clamping part 323, the locking ring 22 is not supported any more, the driving device cannot drive the transmission shaft to rotate through the transmission member 4, and then the transmission member 4 can rotate around the axis of the driving device through the bearing 31, so that the torque force received by the driving device and the friction type torque protector due to overload is reduced, the overload protection process is more stable, the equipment damage rate is reduced, the abrasion is not easy to occur after long-term use, the service life is prolonged, the practicability is high, and the wide market prospect is achieved.
In one embodiment, the transmission member 4 may be a sprocket, gear, timing pulley, V-pulley, flange, disk, or the like.
Specifically, the thimble mechanism 32 further includes a thimble elastic element 324, a locking elastic element 325 and a thimble sleeve 326, the thimble elastic element 324 is disposed between the thimble sleeve 326 and the thimble 321 and generates a force to the thimble 321 away from the locking ring 22, and the locking elastic element 325 is disposed between the locking component 322 and the thimble sleeve 326 and generates a force to the locking component 322 close to the thimble 321. The thimble 321 can be quickly separated from the locking ring 22 by arranging the thimble elastic element 324 when in overload, so that the thimble 321 is prevented from being damaged by overlarge torque, the overload protection process is more stable, the damage rate of the thimble 321 is reduced, the service life is prolonged, and the practicability is high.
In one embodiment, a user may preset the amount of torque that pin 321 is subjected to by setting the elastic force of locking elastic member 325.
Specifically, one end of the thimble 321 supporting the locking ring 22 is circular arc-shaped. One end of the thimble 321 supporting the locking ring 22 is arc-shaped, so that the friction force between the thimble 321 and the locking ring 22 during overload separation is reduced, the damage rate of the thimble 321 is reduced, the service life is prolonged, and the practicability is high.
Specifically, the locking ring 22 is provided with a concave groove 221 at the position abutting against the thimble 321. The concave groove 221 is arranged at the abutting part of the locking ring 22 and the thimble 321, so that the thimble 321 supports the locking ring more stably, the locking ring 22 extrudes the transmission member 4 more stably, the working stability of the friction type torsion protector is improved, and the practicability is strong.
Specifically, the body cover 1 further includes a limit step 12 and a locking ring elastic member 13, the limit step 12 is opened with a plurality of elastic member holes 121, and the locking ring elastic member 13 is disposed between the elastic member holes 121 and the locking ring 22 and generates a force to the locking ring 22 away from the limit step 12. Through setting up locking ring elastomeric element 13 make locking ring 22 can be faster break away from transmission member 4 when transshipping, prevent that locking ring 22 from receiving too big moment of torsion and wearing and tearing, make overload protection process more stable, reduce the spoilage, the increase of service life is long, and the practicality is strong.
Specifically, the peripheries of the two ends of the main body sleeve 1 are further provided with a plurality of rotating shaft fixing holes 14 communicated with the shaft hole 11, and the corresponding positions on the positioning ring 23 are provided with screw holes 231 which are coaxial with the rotating shaft fixing holes 14, so that the friction type torsion protector is mounted on the transmission shaft through the shaft hole 11. Through setting up pivot fixed orifices 14, make friction formula torque protector install in the transmission shaft more steadily, damage friction formula torque protector when preventing overload protection, increase of service life, the practicality is strong.
Specifically, the friction type torsion protector further includes pressing layers 5 provided on opposite sides of the fixing ring 21 and the locking ring 22. Through setting up extrusion layer 5, make solid fixed ring 21 and locking ring 22 extrude the transmission component more steadily, make drive arrangement more stable drive transmission shaft, prevent because of the installation unstable wearing and tearing friction formula torque protector, increase of service life, the usability is strong.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
The above description is only an example of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (7)
1. A friction torsion protector, comprising:
the main body sleeve is provided with a shaft hole and is arranged on the transmission shaft through the shaft hole;
the component locking device comprises a fixing ring, a locking ring and a positioning ring, wherein the fixing ring and the positioning ring are arranged on the periphery of the main body sleeve at intervals, and the locking ring is arranged between the fixing ring and the positioning ring and can reciprocate in the axial direction of the shaft hole to be close to or far away from the fixing ring;
the overload protection device comprises a bearing and an ejector pin mechanism, wherein the bearing is arranged between the fixing ring and the locking ring, the axis of the bearing is superposed with the axis of the shaft hole, the ejector pin mechanisms are arranged on the positioning ring, the ejector pin mechanism is provided with an ejector pin and a locking part, the ejector pin can reciprocate in the axis direction of the shaft hole to support the locking ring to be close to the fixing ring, the locking part can reciprocate in the axis direction vertical to the ejector pin, the ejector pin mechanism also comprises a clamping part which is arranged on the ejector pin and is matched with the locking part, when the locking part is clamped with the clamping part, the locking part limits the ejector pin to enable the ejector pin to support the locking ring, and when the ejector pin is subjected to torsion exceeding preset bearing torsion, the thimble pushes the locking part to be separated from the clamping part, so that the thimble does not support the locking ring any more; and
the transmission member is sleeved on the bearing, the axis of the transmission member is overlapped with the axis of the bearing, when the thimble supports the locking ring, the locking ring and the fixing ring press the transmission member to fixedly mount the transmission member on the friction type torsion protector, so that the driving device drives the friction type torsion protector to rotate around the shaft hole through the transmission member to further drive the transmission shaft to rotate, and when the thimble does not support the locking ring any more, the transmission member can rotate around the axis of the transmission member through the bearing.
2. The friction type torque protector according to claim 1, wherein the thimble mechanism further includes a thimble elastic member, a locking elastic member, and a thimble sleeve, the thimble elastic member is disposed between the thimble sleeve and the thimble and generates a force to the thimble away from the locking ring, and the locking elastic member is disposed between the locking member and the thimble sleeve and generates a force to the locking member close to the thimble.
3. A friction type torsion protector according to claim 2, wherein an end of said thimble supporting said locking ring is rounded.
4. A friction type torque protector according to claim 3 wherein the locking ring is provided with a recess in abutment with the thimble.
5. The friction type torsion protector according to claim 1, wherein the main body cover further comprises a limiting step and a locking ring elastic member, the limiting step is provided with a plurality of elastic member holes, and the locking ring elastic member is disposed between the elastic member holes and the locking ring and generates a force to the locking ring away from the limiting step.
6. A friction type torsion protector according to claim 5, wherein a plurality of rotating shaft fixing holes communicated with the shaft hole are further formed in the peripheries of the two ends of the main body sleeve, and a screw hole coaxial with the rotating shaft fixing hole is formed in the corresponding position of the positioning ring, so that the friction type torsion protector can be mounted on the transmission shaft through the shaft hole.
7. A friction torsion protector according to any of claims 1 to 6 further comprising a squeeze layer provided on opposite sides of the securing ring and the locking ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010746779.7A CN111981057A (en) | 2020-07-29 | 2020-07-29 | Friction type torsion protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010746779.7A CN111981057A (en) | 2020-07-29 | 2020-07-29 | Friction type torsion protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111981057A true CN111981057A (en) | 2020-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010746779.7A Pending CN111981057A (en) | 2020-07-29 | 2020-07-29 | Friction type torsion protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111981057A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112763174A (en) * | 2020-12-28 | 2021-05-07 | 中国科学院长春光学精密机械与物理研究所 | Positioning and locking device for vibration simulation table |
-
2020
- 2020-07-29 CN CN202010746779.7A patent/CN111981057A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112763174A (en) * | 2020-12-28 | 2021-05-07 | 中国科学院长春光学精密机械与物理研究所 | Positioning and locking device for vibration simulation table |
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