CN114183480B - Automatic reset friction type torque limiting coupler - Google Patents
Automatic reset friction type torque limiting coupler Download PDFInfo
- Publication number
- CN114183480B CN114183480B CN202111495214.7A CN202111495214A CN114183480B CN 114183480 B CN114183480 B CN 114183480B CN 202111495214 A CN202111495214 A CN 202111495214A CN 114183480 B CN114183480 B CN 114183480B
- Authority
- CN
- China
- Prior art keywords
- mandrel
- friction
- pressurizing
- cylinder
- face
- 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.)
- Active
Links
- 230000008878 coupling Effects 0.000 claims abstract description 13
- 238000010168 coupling process Methods 0.000 claims abstract description 13
- 238000005859 coupling reaction Methods 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 claims abstract description 7
- 210000004907 gland Anatomy 0.000 claims abstract description 6
- 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
- 239000000203 mixture Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 5
- 238000000926 separation method 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
- 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
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
The invention provides an automatic resetting friction type torque limiting coupling which mainly comprises a shell, a mandrel, a friction component, a gland and a sealing piece, wherein the mandrel is sleeved with the friction component; the temperature sensing clutch device consists of a pressurizing sleeve, a disc spring and an adjusting nut, 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, the outer side of a piston of the cylinder is abutted against one end face of a mandrel, and an 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 resetting capacity without manual intervention. The invention is especially suitable for the occasion of safe operation of high-power heavy-load equipment.
Description
Technical Field
The invention relates to a mechanical transmission component, namely a coupler, in particular to an automatic resetting friction type torque limiting coupler (also called a torque limiting clutch and a torque limiter).
Background
In mechanical transmissions, the prime mover and the work machine are typically coupled by various mechanical transmission components known as couplings that transmit the rotational speed and torque of the prime mover to the work machine to cause the work machine to perform a variety of tasks. Working machines operate in a variety of different environments and requirements, which also place different demands on the coupling, such as overload safety, long life, installation and maintenance, etc. Couplings operating in impact and overload environments are very safe and often severely impact the safe production of the equipment. There is a slipping multi-plate friction torque limiter coupling (sample 807 page of coupling from south Beijing industrial and scientific company) as shown in FIG. 1. The inside of the device is provided with a plurality of friction plates, when overload occurs, the friction plates slip, so that the active and passive parts of the device are separated, the safety of the device is protected, but 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, so that the safety production is endangered. In the prior art, a failure protection ball type torque limiter (page 709 of a coupling sample of Nanjing industrial and scientific company) is also provided, and a precise ball mechanism is arranged in the failure protection ball type torque limiter, so that equipment can be completely separated from the motor in an active and passive mode at the moment of overload, and the overload residual torque is zero. However, the utility model has the defects that the utility model needs to be reset by manual external force, and cannot be reset automatically, thus causing inconvenience for use. The ball mechanism has smaller transmission torque and cannot be suitable for occasions with heavy load and large torque.
Disclosure of Invention
Aiming at the problems, the invention aims to provide the friction type torque limiting coupler which has strong bearing capacity and overload separation and does not need manual intervention to automatically reset, and the defects in the prior art are overcome.
The present invention is thus achieved. The device mainly comprises a shell, a mandrel, a friction assembly, a gland and a seal, wherein the friction assembly is sleeved at the upper end of the mandrel, one side of the friction assembly is provided with a baffle, the other side of the friction assembly is provided with a friction plate pressurizing device, and then the device is also provided with a temperature sensing clutch device;
the pressurizing device consists of a pressurizing sleeve, a disc spring and an adjusting nut, and the pressurizing sleeve, the disc spring and the adjusting nut are sleeved on the mandrel;
The temperature sensing clutch device consists of a pressurizing sleeve and a cylinder, wherein a cylinder body of the cylinder is fixedly arranged on a large end face of the pressurizing sleeve by 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 by the hollow bolt, and the outer side of a piston of the cylinder is abutted against one end face of the mandrel.
The working process of the invention is as such. When the equipment is overloaded, the friction plate slips, and the high temperature generated by the slip friction heats the expansion liquid to quickly vaporize the expansion liquid, so that high temperature saturated vapor pressure is generated, and the temperature and the pressure at the moment can be called as the opening temperature and the opening pressure. When the starting temperature and the starting pressure are reached, the high-temperature saturated vapor pressure enters the cylinder through the vent hole, so that the cylinder body and the pressurizing sleeve overcome the elasticity and move outwards for a certain distance to drive the friction plate to be completely separated, the equipment is driven to be completely separated in the moment of overload, and the overload residual torque is zero. When the temperature is reduced, the saturated vapor pressure of the high temperature is reduced, the elastic force of the disc spring enables the pressurizing sleeve to move inwards, the friction plate contacts and skids again, the generated heat is used for heating, and when the starting temperature and the starting pressure are reached, the driving and the driven of the equipment are separated again. The active and passive of the device can be basically separated only by generating heat by little overload residual torque to maintain the opening temperature and the opening pressure, so that the prime motor can run in a no-load mode for a long time, and no safety accident occurs. When the overload factor is eliminated during stopping, the temperature is restored to 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 is started again, so that the equipment can work normally again.
The expansion liquid is water, methanol, ethanol or a mixture thereof.
The invention can be made into a direct-connection structure or a separation type structure, wherein the direct-connection structure is that the shaft core is made into a shaft hole shape, the outer end of the shell is made into a flange shape, and the active end and the passive end of the equipment are directly connected with the direct-connection structure. The separated structure is flange-shaped at both ends, the shell is telescopic, and the active and passive ends of the device are connected with the shell through flanges.
Because the shell can stretch out and draw back, bring very big convenience for installation and maintenance.
The invention has obvious advantages. The device has the advantages of simple structure, easy manufacture, convenient maintenance, strong bearing capacity, capability of overload separation, automatic resetting without manual intervention and long service life.
The invention is especially suitable for the occasion of safe operation of high-power heavy-load equipment.
Drawings
FIG. 1 is a prior art multi-plate friction torque limiting coupling screenshot;
FIG. 2 is a schematic diagram of a direct-coupled structure of the present invention;
FIG. 3 is a schematic view of a separation type structure of the present invention;
The device comprises a gland, a baffle, 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, the baffle, the friction plate assembly, the mandrel, the pressurizing sleeve, the sealing element, the shell, the disc spring, the adjusting nut, the hollow double-head screw, the cylinder body and the connecting flange are arranged in sequence, and the connecting flange is arranged in sequence.
Detailed Description
As seen from the figure, the invention mainly comprises a shell 7, a mandrel 4, a friction plate assembly 3, a gland 1 and a sealing piece 6, wherein the mandrel 4 is sleeved with the friction plate assembly 3, one side of the friction plate assembly 3 is provided with a baffle plate 2, the other side is provided with a friction plate pressurizing device, and then is also provided with a temperature sensing clutch device, the pressurizing device and the temperature sensing clutch device are sleeved on the mandrel 4, the interior of the coupler is sealed by the sealing piece, and the cavity inside 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, and the pressurizing sleeve, the disc spring 8 and the adjusting nut 9 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, the vent hole 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 abutted against one end surface of a mandrel 4.
The mandrel is internally 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 resetting friction type torque limiting coupler, and the torque limiting coupler can be installed according to the installation requirement of a common coupler.
The outer ends of the mandrel and the outer end of the shell are made into flange forms, the shell can axially move, and the separated type automatic reset friction type torque limiting coupler is formed. The torque limiting coupler is installed by firstly installing a prime motor and a working machine according to conventional requirements, and reserving the normal working distance of the coupler between an active coupler and a passive coupler; and shortening the coupling body by a certain length, inserting the coupling body between the active and the passive, connecting one side by using a bolt, stretching the coupling body, and connecting the other side by using the bolt. The coupling body can be conveniently removed in reverse order for maintenance and adjustment without moving the prime mover or the working machine.
Claims (2)
1. An automatic resetting friction type torque limiting coupler mainly comprises a shell (7), a mandrel (4), a friction component (3), a gland (1) and a sealing piece (6), and is characterized in that the friction component (3) is sleeved at the upper end of the mandrel (4), a baffle (2) is arranged on one side of the friction component (3), a friction plate pressurizing device is arranged on the other side of the friction component, a temperature sensing clutch device is arranged on the other side of the friction component, the pressurizing device and the temperature sensing clutch device are sleeved on the mandrel (4), the inside of the coupler is sealed by the sealing piece, and an expansion liquid is filled in an inner cavity of the coupler;
The pressurizing device consists of a pressurizing sleeve (5), a disc spring (8) and an adjusting nut (9), and the pressurizing sleeve, the disc spring and the adjusting nut 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 face of the pressurizing sleeve (5) through a hollow bolt (10), a vent hole is formed in the large end face of the pressurizing sleeve (5) and 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 face of the mandrel (4).
2. The automatic reset friction type torque limiting coupling according to claim 1, wherein the expansion liquid is water, methanol, ethanol or a mixture thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111495214.7A CN114183480B (en) | 2021-12-08 | 2021-12-08 | Automatic reset friction type torque limiting coupler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111495214.7A CN114183480B (en) | 2021-12-08 | 2021-12-08 | Automatic reset friction type torque limiting coupler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114183480A CN114183480A (en) | 2022-03-15 |
| CN114183480B true CN114183480B (en) | 2024-05-10 |
Family
ID=80542823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111495214.7A Active CN114183480B (en) | 2021-12-08 | 2021-12-08 | Automatic reset friction type torque limiting coupler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114183480B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11825770B1 (en) * | 2022-06-29 | 2023-11-28 | 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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| 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
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| 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 |
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| EP2365228A2 (en) * | 2010-03-10 | 2011-09-14 | Jtekt Corporation | Shaft connector and torque limiter |
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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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Also Published As
| Publication number | Publication date |
|---|---|
| CN114183480A (en) | 2022-03-15 |
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