CN114183480A - Automatic reset friction type torque-limiting coupling - Google Patents
Automatic reset friction type torque-limiting coupling Download PDFInfo
- Publication number
- CN114183480A CN114183480A CN202111495214.7A CN202111495214A CN114183480A CN 114183480 A CN114183480 A CN 114183480A CN 202111495214 A CN202111495214 A CN 202111495214A CN 114183480 A CN114183480 A CN 114183480A
- Authority
- CN
- China
- Prior art keywords
- friction
- cylinder
- type torque
- mandrel
- pressurizing
- 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
Links
- 230000008878 coupling Effects 0.000 title claims abstract description 23
- 238000010168 coupling process Methods 0.000 title claims abstract description 23
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 23
- 239000007788 liquid Substances 0.000 claims abstract description 7
- 210000004907 gland Anatomy 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims description 7
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 238000000926 separation method Methods 0.000 abstract description 8
- 238000012423 maintenance Methods 0.000 abstract description 5
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000009347 mechanical transmission Effects 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- F16D43/216—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 with multiple lamellae
Abstract
The invention has proposed a kind of automatic reset friction type limited torsion coupling, it is mainly made up of outer casing, spindle, friction assembly, gland, seal, suit the friction assembly on the spindle, one side of the friction assembly is equipped with the back plate, another side is equipped with the pressure device of the friction disc, and then also equipped with the temperature sensing clutch, they are all fitted on spindle; the pressure device comprises a pressure sleeve, a disc spring and an adjusting nut, the temperature sensing clutch device comprises a pressure sleeve and a cylinder, the cylinder body of the cylinder is fixedly arranged on the large end face of the pressure sleeve by a hollow bolt, the large end face of the pressure sleeve is provided with a vent hole which is connected with the inside of the cylinder by the hollow bolt, the outer side of the piston of the cylinder is attached to one end face of the mandrel, and the inner cavity of the coupler is filled with expansion liquid. The invention has the obvious advantages of simple structure, convenient maintenance, strong bearing capacity, normal transmission of rotating speed and torque, overload separation and automatic reset without manual intervention. The invention is particularly suitable for the occasions of safe operation of high-power heavy-load equipment.
Description
Technical Field
The invention relates to a mechanical transmission part-coupler, in particular to an automatic reset friction type torque-limiting coupler (also called a torque-limiting clutch and a torque limiter).
Background
In mechanical transmission, the prime mover and the working machine are connected by various mechanical transmission members called couplings, which transmit the rotation speed and torque of the prime mover to the working machine, so that the working machine can perform various operations. The working machine works in various environments and requirements, and different requirements are also put on the coupling, such as overload safety, service life, installation and maintenance and the like. The overload safety of the coupling operating in impact and overload environments is very important, and the safety production of equipment is often seriously influenced. In the prior art, there is a slip multi-plate friction type torque-limiting coupling (807 pages of coupling sample from Nanjing Inno technology company), as shown in FIG. 1. The friction plates are arranged in the device, when the device is overloaded, the friction plates slip, the device is enabled to be separated from the driving device and the driven device, the device is protected to be safe, the overload residual torque is large, and the device needs to be stopped in time. If the machine is not stopped in time, the friction plate can slip for a long time, and the generated high temperature can burn the friction plate, thereby endangering the safety production. In the prior art, a failure protection ball type torque limiter (709 pages of coupling sample of Nanjing Inno technology company) is provided, a precise ball mechanism is arranged in the failure protection ball type torque limiter, the driving and the driven of equipment can be completely separated at the moment of overload, and the residual torque of the overload is zero. But the defect is that the reset is needed by manual external force, and the reset can not be automatically performed, which causes inconvenience for use. The ball mechanism has small transmission torque and can not adapt to the occasions of heavy load and large torque.
Disclosure of Invention
Aiming at the problems, the invention aims to provide a friction type torque-limiting coupling which is high in bearing capacity, separated in an overload mode and automatically reset without manual intervention, and overcomes the defects of the prior art.
The present invention is thus achieved. The friction assembly is sleeved at the upper end of the mandrel, a baffle is arranged on one side of the friction assembly, a friction plate pressurizing device is arranged on the other side of the friction assembly, a temperature sensing clutch device is also arranged behind the friction assembly, the pressurizing device and the temperature sensing clutch device are sleeved on the mandrel, the inside of the coupler is sealed by a sealing element, and an inner cavity of the coupler is filled with expansion liquid;
the pressurizing device consists of a pressurizing sleeve, a disc spring and an adjusting nut which are sleeved on the mandrel;
the temperature sensing clutch device is composed of a pressurizing sleeve and a cylinder, the cylinder body of the cylinder is fixedly arranged on the large end face of the pressurizing sleeve through a hollow bolt, the large end face of the pressurizing sleeve is provided with a vent hole which is connected with the inside of the cylinder through the hollow bolt, and the outer side of the piston of the cylinder is attached to one end face of the mandrel.
The working process of the present invention is as such. When the equipment is overloaded, the friction plate slips, the high temperature generated by the slipping friction heats the expansion liquid to vaporize rapidly, and great high-temperature saturated vapor pressure is generated, and the temperature and the pressure at the moment can be called as opening temperature and opening pressure. When the starting temperature and the starting pressure are reached, high-temperature saturated steam pressure enters the cylinder through the vent hole, the cylinder body and the pressurizing sleeve move outwards for a certain distance by overcoming the elasticity, the friction plates are driven to be completely separated, the equipment is completely separated from the equipment in the overload instant, and the overload residual torque is zero. When the temperature is reduced, the high-temperature saturated steam pressure is reduced, the disc spring elasticity enables the pressurizing sleeve to move inwards, the friction plate is contacted and skidded again, the generated heat is used for heating, and when the opening temperature and the opening pressure are reached, the driving and the driven of the secondary equipment are separated. The driving and the driven of the equipment can be basically separated only by generating heat to maintain the opening temperature and the opening pressure by little overload residual torque, so that the prime motor can run in a no-load mode for a long time without safety accidents. When the vehicle is stopped and the overload factor is eliminated, the temperature is recovered to be normal, the steam pressure disappears, the pressurizing sleeve automatically resets and compresses the friction plate to the initial position under the action of the elastic force of the disc spring, and the resetting process is automatically completed without manual intervention. And the equipment can work normally again by starting the equipment again.
The expansion liquid is water, methanol, ethanol or a mixed liquid thereof.
The invention can be made into a direct connection structure or a separation structure, the direct connection structure is that the inside of a shaft core is made into a shaft hole shape, the outer end of a shell is made into a flange shape, and the active and passive ends of the device are directly connected with the flange shape. The separation type structure is characterized in that two ends of the separation type structure are both manufactured into flange shapes, the shell is manufactured into a telescopic structure, and the active end and the passive end of the equipment are connected with the separation type structure through flanges.
Because the shell can stretch out and draw back, it is very convenient to bring for the installation maintenance.
The invention has obvious advantages. The overload separation device has the advantages of simple structure, easiness in manufacturing, convenience in maintenance, strong bearing capacity, capability of overload separation, automatic resetting without manual intervention and long service life.
The invention is particularly suitable for the occasions of safe operation of high-power heavy-load equipment.
Drawings
FIG. 1 is a screenshot of a prior art multi-plate friction torque-limiting coupling;
FIG. 2 is a schematic view of a direct-coupled structure according to the present invention;
FIG. 3 is a schematic view of a separation type structure according to the present invention;
the device comprises a gland, a baffle plate, a friction plate assembly, a mandrel, a pressurizing sleeve, a sealing element, a shell, a disc spring, an adjusting nut, a hollow double-head screw, a piston, a cylinder body and a connecting flange, wherein the gland is 1, the baffle plate is 2, the friction plate assembly is 3, the mandrel is 4, the pressurizing sleeve is 5, the sealing element is 6, the shell is 7, the disc spring is 8, the adjusting nut is 9, the hollow double-head screw is 10, the piston is 11, the cylinder body is 12, and the connecting flange is 13.
Detailed Description
The invention is mainly composed of a shell 7, a mandrel 4, a friction plate component 3, a gland 1 and a sealing element 6, wherein the friction plate component 3 is sleeved on the mandrel 4, one side of the friction plate component 3 is provided with a baffle 2, the other side is provided with a friction plate pressurizing device, and a temperature sensing clutch device is also arranged behind the friction plate component 3, the pressurizing device and the temperature sensing clutch device are sleeved on the mandrel 4, the inside of a coupler is sealed by the sealing element, and the inner cavity of the coupler is filled with expansion liquid;
the pressurizing device consists of a pressurizing sleeve 5, a disc spring 8 and an adjusting nut 9 which are sleeved on the mandrel 4;
the temperature sensing clutch device consists of a pressurizing sleeve 5, a piston 11 and a cylinder body 12, wherein the cylinder body 12 is fixedly arranged on the large end surface of the pressurizing sleeve 5 by a hollow bolt 10, the large end surface of the pressurizing sleeve 5 is provided with a vent hole which is connected with the inside of the cylinder body 12 by the hollow bolt 10, and the inner side of the piston 11 of the cylinder is attached to one end surface of the mandrel 4.
The spindle is made into a shaft hole form, the outer end of the shell is made into a flange form to form a direct connection type automatic reset friction type torque limiting coupler, and the torque limiting coupler can be installed according to the installation requirement of a common coupler.
The outer end of the mandrel and the outer end of the shell are made into flange forms, and the shell can move axially to form a separated automatic reset friction type torque-limiting coupling. The torque-limiting coupling is installed by firstly installing a prime motor and a working machine according to the conventional requirement, and reserving the normal working distance of the coupling between the active and the passive of the prime motor and the working machine; then shortening the coupling body by a certain length, inserting the coupling body between the driving and driven parts, connecting one side by using bolts, then stretching the coupling body, and connecting the other side by using bolts. The coupling body can be conveniently removed for maintenance and adjustment without moving the prime mover or the working machine in the reverse order.
Claims (4)
1. The utility model provides an automatic friction formula limit for torsion shaft coupling resets, mainly by shell (7), dabber (4), friction pack (3), gland (1), sealing member (6) are constituteed, its characterized in that is in dabber (4) upper end suit friction pack (3), and baffle (2) are equipped with on one side of friction pack (3), and friction disc pressure device is equipped with on the other side, still is equipped with temperature sensing clutch after that, and pressure device, temperature sensing clutch all suit are on dabber (4), and the shaft coupling is inside to be sealed up with the sealing member, and its inside cavity fills inflation liquid.
2. The automatic resetting friction type torque-limiting coupling according to claim 1, characterized in that the pressurizing device is composed of a pressurizing sleeve (5), a disc spring (8) and an adjusting nut (9), which are sleeved on the mandrel (4).
3. The automatic resetting friction type torque-limiting coupling according to claim 2, characterized in that the temperature-sensing clutch device is composed of a pressurizing sleeve (5), a piston (11) and a cylinder body (12), the cylinder body (12) is fixedly arranged on the large end surface of the pressurizing sleeve (5) through a hollow bolt (10), the large end surface of the pressurizing sleeve (5) is provided with a vent hole which is connected with the inside of the cylinder body (12) through the hollow bolt (10), and the inner side of the piston (11) of the cylinder is attached to one end surface of the mandrel (4).
4. The automatic resetting friction type torque-limiting coupling according to claim 1, wherein the expansion fluid is water, methanol, ethanol or a mixture thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111495214.7A CN114183480A (en) | 2021-12-08 | 2021-12-08 | Automatic reset friction type torque-limiting coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111495214.7A CN114183480A (en) | 2021-12-08 | 2021-12-08 | Automatic reset friction type torque-limiting coupling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114183480A true CN114183480A (en) | 2022-03-15 |
Family
ID=80542823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111495214.7A Pending CN114183480A (en) | 2021-12-08 | 2021-12-08 | Automatic reset friction type torque-limiting coupling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114183480A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024006462A1 (en) * | 2022-06-29 | 2024-01-04 | Cnh Industrial America Llc | Agricultural vehicle with debris-purging clutch assembly |
Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE786410A (en) * | 1971-08-06 | 1972-11-16 | Haller Richard | FRICTIONAL COUPLING THAT DECOUPLES WHEN AN OVERLOAD OCCURS |
| US4022084A (en) * | 1974-05-09 | 1977-05-10 | Gkn Transmissions Limited | Control couplings |
| DE4003823A1 (en) * | 1989-02-08 | 1990-08-09 | Steyr Daimler Puch Ag | Four-wheel drive vehicle - uses multiplate clutch with adjustment system to give torque limitation |
| JPH06241250A (en) * | 1993-02-19 | 1994-08-30 | Toyoda Mach Works Ltd | Driving force transmission device |
| FI974049A0 (en) * | 1997-10-24 | 1997-10-24 | Suokone Oy | the switch |
| GB2279128B (en) * | 1993-06-19 | 1998-01-28 | Luk Lamellen & Kupplungsbau | Torque transmission apparatus |
| US6874606B1 (en) * | 2003-10-30 | 2005-04-05 | Power Transmission Technology, Inc. | Torque limiting clutch having centrifugally regulated characteristic torque |
| CN200952536Y (en) * | 2006-06-04 | 2007-09-26 | 丁焰 | Friction type overload limit torque coupling |
| KR20080010096A (en) * | 2006-07-26 | 2008-01-30 | 윤창열 | A motor air brake |
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| EP2365228A2 (en) * | 2010-03-10 | 2011-09-14 | Jtekt Corporation | Shaft connector and torque limiter |
| CN102252047A (en) * | 2011-07-06 | 2011-11-23 | 王友山 | Friction-type coupler |
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| CN107524724A (en) * | 2016-12-26 | 2017-12-29 | 中南大学 | A kind of speed difference senses adaptive shaft coupling |
| DE102016217825A1 (en) * | 2016-09-19 | 2018-03-22 | Schaeffler Technologies AG & Co. KG | Friction clutch and method for adjusting an operating point of the friction clutch |
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-
2021
- 2021-12-08 CN CN202111495214.7A patent/CN114183480A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE786410A (en) * | 1971-08-06 | 1972-11-16 | Haller Richard | FRICTIONAL COUPLING THAT DECOUPLES WHEN AN OVERLOAD OCCURS |
| US4022084A (en) * | 1974-05-09 | 1977-05-10 | Gkn Transmissions Limited | Control couplings |
| DE4003823A1 (en) * | 1989-02-08 | 1990-08-09 | Steyr Daimler Puch Ag | Four-wheel drive vehicle - uses multiplate clutch with adjustment system to give torque limitation |
| JPH06241250A (en) * | 1993-02-19 | 1994-08-30 | Toyoda Mach Works Ltd | Driving force transmission device |
| GB2279128B (en) * | 1993-06-19 | 1998-01-28 | Luk Lamellen & Kupplungsbau | Torque transmission apparatus |
| FI974049A0 (en) * | 1997-10-24 | 1997-10-24 | Suokone Oy | the switch |
| US6874606B1 (en) * | 2003-10-30 | 2005-04-05 | Power Transmission Technology, Inc. | Torque limiting clutch having centrifugally regulated characteristic torque |
| CN200952536Y (en) * | 2006-06-04 | 2007-09-26 | 丁焰 | Friction type overload limit torque coupling |
| KR20080010096A (en) * | 2006-07-26 | 2008-01-30 | 윤창열 | A motor air brake |
| CN101149080A (en) * | 2007-08-16 | 2008-03-26 | 丁焰 | Friction type centrifuge coupler |
| CN102149936A (en) * | 2008-09-09 | 2011-08-10 | 提乐特飞机引擎股份有限公司 | Overload friction clutch |
| CN102062161A (en) * | 2009-11-17 | 2011-05-18 | 通用汽车环球科技运作公司 | Active materials actuated one-way clutch |
| EP2365228A2 (en) * | 2010-03-10 | 2011-09-14 | Jtekt Corporation | Shaft connector and torque limiter |
| CN102252047A (en) * | 2011-07-06 | 2011-11-23 | 王友山 | Friction-type coupler |
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| DE102016217825A1 (en) * | 2016-09-19 | 2018-03-22 | Schaeffler Technologies AG & Co. KG | Friction clutch and method for adjusting an operating point of the friction clutch |
| CN107524724A (en) * | 2016-12-26 | 2017-12-29 | 中南大学 | A kind of speed difference senses adaptive shaft coupling |
| DE102019101113A1 (en) * | 2019-01-17 | 2020-07-23 | Schaeffler Technologies AG & Co. KG | Slip clutch |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024006462A1 (en) * | 2022-06-29 | 2024-01-04 | Cnh Industrial America Llc | Agricultural vehicle with debris-purging clutch assembly |
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