CN117128258A - Cam clutch and monitoring method - Google Patents
Cam clutch and monitoring method Download PDFInfo
- Publication number
- CN117128258A CN117128258A CN202311404862.6A CN202311404862A CN117128258A CN 117128258 A CN117128258 A CN 117128258A CN 202311404862 A CN202311404862 A CN 202311404862A CN 117128258 A CN117128258 A CN 117128258A
- Authority
- CN
- China
- Prior art keywords
- cam
- clutch
- working condition
- cam pin
- groove
- 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
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000012544 monitoring process Methods 0.000 title claims abstract description 15
- 238000003466 welding Methods 0.000 claims abstract description 39
- 230000009467 reduction Effects 0.000 claims abstract description 22
- 238000012806 monitoring device Methods 0.000 claims abstract description 15
- 238000013461 design Methods 0.000 claims abstract description 9
- 238000001514 detection method Methods 0.000 claims description 14
- 230000005540 biological transmission Effects 0.000 claims description 13
- 239000004677 Nylon Substances 0.000 claims description 12
- 229920001778 nylon Polymers 0.000 claims description 12
- 230000007423 decrease Effects 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 230000002159 abnormal effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 238000004663 powder metallurgy Methods 0.000 description 5
- 238000004891 communication Methods 0.000 description 3
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/022—Power-transmitting couplings or clutches
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/028—Acoustic or vibration analysis
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Mechanical Engineering (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
The application discloses a cam clutch and a monitoring method, comprising a welding sleeve, two cam discs and a cam pin; the device further comprises a noise reduction piece, wherein the noise reduction piece is at least positioned between the contact surfaces of the welding sleeve and the cam pin, between the contact surfaces of the cam disc and the cam pin and between the contact surfaces of two opposite cam discs; the monitoring device is used for monitoring and judging the working condition of the clutch; the noise reduction piece can effectively reduce noise generated by collision or friction of the rigid structure in the operation process of the clutch, and meanwhile, the service life of each structure of the clutch can be prolonged; the monitoring device can monitor and judge the working condition of the clutch in real time, so that an operator can find, maintain or replace the clutch in time when the product reaches the design life or is abnormal in use.
Description
Technical Field
The application relates to the technical field of mechanical transmission devices, in particular to a cam clutch and a monitoring method.
Background
The clutch is used as a part of the transmission shaft, and can slip when the torque of the transmission shaft reaches a certain value when the clutch is used for mechanical equipment, so that the transmission shaft is protected.
The existing clutch generally comprises a welding fork, two cam disks, a welding sleeve, a cam pin, a hub support and the like, and when the clutch works, the two cam disks are controlled to be abutted or separated through the contact positions of the cam pin and the inner wall surface of the welding sleeve.
However, in the clutch, since the cam plate, the cam pin, the welding sleeve and the like are all made of steel materials, collision and friction can be generated in the process of relative movement, particularly, between the cam pin and the cam plate, between the cam pin and the welding sleeve and between the two cam plates, and further, larger noise can be generated in the using process of the clutch.
Disclosure of Invention
The application aims to overcome the defects in the prior art, and provides a cam clutch and a monitoring method.
In order to achieve the above purpose, the application adopts the following technical scheme:
a cam clutch comprises a welding sleeve, two cam plates and a cam pin;
a plurality of first grooves are formed in the inner wall surface of the welding sleeve;
the two cam plates are oppositely arranged, and a second groove is formed at the outer edge;
the cam pin is provided with a first state that one end is embedded into the first groove, and the other end is embedded into a partial area of the second groove so that the two cam discs are mutually abutted;
the cam pin is also provided with a second state that one end of the cam pin is separated from the first groove and slides relative to the inner wall surface of the welding sleeve so as to drive the other end of the cam pin to move along the second groove towards the circle center of the cam disc to push the two cam discs to be separated;
the device further comprises a noise reduction piece, wherein the noise reduction piece is at least positioned between the contact surfaces of the welding sleeve and the cam pin, between the contact surfaces of the cam disc and the cam pin and between the contact surfaces of two opposite cam discs;
the clutch control system also comprises a monitoring device for monitoring and judging the working condition of the clutch.
Preferably, the first groove gradually increases in width from outside to inside to form a first inclined guide surface;
the cam pin comprises a first portion, wherein the width of the first portion is gradually increased from outside to inside so as to form the mutual matching of the inclined guide surfaces, and the first portion can be separated from the second inclined guide surface of the first groove.
Preferably, the second groove comprises a first face and a second face on the cam plates, and the distance between the first faces on the two cam plates is larger than the distance between the second faces on the two cam plates;
the cam pin comprises a second portion, wherein the width of the second portion gradually decreases from outside to inside, so that the second portion is positioned between the two first faces when the cam pin is in the first state, and the second portion is positioned between the two second faces when the cam pin is in the second state.
Preferably, the noise reducer comprises nylon;
the nylon covers the outer wall surface of the cam disc and the inner wall surface of the welding sleeve.
Preferably, the hub comprises a hub bracket;
the monitoring device comprises a vibration detection system for detecting the vibration frequency of the clutch, and the vibration detection system is arranged on the hub bracket.
Preferably, the monitoring device further comprises an on-board control system and a screen display;
the vehicle-mounted control system and the vibration detection system are in wireless transmission; the vehicle-mounted control system is connected with the screen display.
A monitoring method suitable for the cam clutch comprises the following steps,
setting a working condition judgment standard, wherein the working conditions comprise a normal working non-slip working condition, a low-torque slip working condition, a normal slip working condition, a high-torque slip working condition and a clamping working condition;
acquiring a real-time frequency value of a clutch;
and acquiring a first comparison result according to the working condition judgment standard and the real-time frequency value, and determining a real-time working condition according to the first comparison result.
Preferably, the set working condition judgment standard comprises;
setting transmission shaft torque intervals under different working conditions based on the designed torque limiting torque of the cam clutch with different specifications;
determining a standard frequency value based on the cam clutch design parameters;
and constructing the relation data of the transmission shaft torque interval and the standard frequency value under different working conditions.
Preferably, the method further comprises: and judging whether the occurrence times of the normal slip working condition are larger than the design life of the clutch, and acquiring a second comparison result.
Preferably, the method further comprises: the first comparison result and/or the second comparison result is displayed by a screen display (63).
Compared with the prior art, the application has the beneficial effects that: according to the cam clutch and the monitoring method disclosed by the application, the noise reduction pieces are arranged between the contact surfaces of the welding sleeve and the cam pin, between the contact surfaces of the cam disc and the cam pin and between the contact surfaces of the two opposite cam discs, so that noise generated by collision or friction of a rigid structure in the operation process of the clutch can be effectively reduced, and meanwhile, the service life of each structure of the clutch can be prolonged; in addition, through monitoring devices's setting, but real-time supervision and judgement clutch's operating mode, and then the operating personnel of being convenient for reach design life or appear when using unusual at the product, can in time discover and maintain or change.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present application, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of an embodiment of the present application.
Fig. 2 is a schematic cross-sectional view of an example one of the present application.
Fig. 3 is a schematic view of fig. 2 in section along A-A'.
FIG. 4 is a schematic view of a cam pin and spring seat assembly according to an embodiment of the present application in a first state.
Fig. 5 is an enlarged schematic view of the position B in fig. 4.
FIG. 6 is a schematic view of a cam pin and spring seat assembly in a second state according to an embodiment of the present application.
FIG. 7 is another angular schematic view of the cam pin and spring seat assembly of FIG. 6.
Fig. 8 is an enlarged schematic view of the position B in fig. 7.
Fig. 9 is a schematic view showing the structure of a welding sleeve in accordance with an embodiment of the present application.
Fig. 10 is a schematic view of a cam pin according to an embodiment of the present application.
Fig. 11 is a schematic side view of fig. 10 in direction D.
Fig. 12 is a schematic view showing the structure of a cam plate according to an embodiment of the present application.
FIG. 13 is a schematic diagram showing the connection of a monitoring device according to an embodiment of the present application.
Fig. 14 is a schematic structural diagram of a second embodiment of the present application.
Fig. 15 is an enlarged schematic view of the E position in fig. 14.
Fig. 16 is a schematic view showing the structure of a cam plate according to an example of the present application.
Fig. 17 is an enlarged schematic view of the F position in fig. 16.
Fig. 18 is a schematic diagram illustrating steps of a third embodiment of the present application.
FIG. 19 is a schematic diagram of torque versus frequency.
Reference numerals:
1. welding a sleeve; 11. a first groove; 111. a first inclined guide surface; 112. an introduction surface; 2. a cam plate; 21. a second groove; 211. a first face; 212. a second face; 3. a cam pin; 31. a first section; 311. a second inclined guide surface; 32. a second section; 321. a third inclined guide surface; 4. a noise reduction member; 5. a hub bracket; 51. a receiving chamber; 52. a communication chamber; 6. a monitoring device; 61. a vibration detection system; 62. a vehicle-mounted control system; 621. a first comparison module; 622. the working condition judgment standard setting module; 623. a statistics module; 624. a second comparison module; 63. a screen display; 631. a result display module; 7. an additional member; 71. a blanking cover; 72. powder metallurgy bushing; 73. welding a fork; 74. an end cap; 75. clamping springs; 76. an oil seal; 77. an O-ring; 78. a first nylon sleeve; 79. and a second nylon sleeve.
Detailed Description
The following description of the embodiments of the present application will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the application are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
In the description of the present application, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; the connection can be mechanical connection or connection; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
Example one
Referring to fig. 1 to 12, an embodiment of the present application provides a cam clutch including a weld sleeve 1, a spring seat assembly, a cam plate 2, a cam pin 3, a noise reducer, a hub bracket 5, a monitoring device 6, and an additional member 7. The noise reduction member may be a sound absorbing cotton, a sound absorbing hole, or the like, which is provided on the hub bracket 5, and is not shown in the drawing. Of course, in other embodiments, the monitoring device 6 may not be provided, and the noise reduction member may be provided with other structures capable of playing a role in noise reduction.
Referring to fig. 1 and 2, in the present embodiment, the additional member 7 includes a blanking cover 71, a powder metallurgy bushing 72, a welding fork 73, an end cap 74, and a snap spring 75. The wheel hub support 5 is internally provided with a containing cavity 51 for containing the spring seat assembly, the spring seat assembly is suspended in the containing cavity 51 under the action of the forces of the cam disc 2 and the cam pin 3, the containing cavity 51 is communicated with the inner wall surface of the welding sleeve 1 through three communicating cavities 52, and each communicating cavity 52 is internally provided with a powder metallurgy bushing 72 correspondingly, so that the cam pin 3 can freely slide in the powder metallurgy bushing 72. Of course, in other embodiments, one, two or more communication cavities 52 may be provided, and one, two or more cam pins 3 and powder metallurgy bushings 72 may be provided correspondingly for the purpose of adaptation. The welding fork 73 is located on the side of the spring seat assembly remote from the hub bracket 5 and is welded integrally with the welding sleeve 1. The end cover 74 is sleeved on one side of the hub bracket 5 far away from the welding fork 73, and the end face part of the end cover 74 is in butt joint with the end face part of the welding sleeve 1 through the clamp spring 75.
Further, in order to achieve lubrication and sealing between the end cover 74 and the hub bracket 5, there is lubrication oil between the hub bracket 5 and the end cover 74, the additional member 7 further comprises an oil seal 76 and an O-ring 77, the oil seal 76 is located between the hub bracket 5 and the end cover 74, and the O-ring 77 is located between the end cover 74 and the welded sleeve.
Further, in order to reduce wear and noise between the welding fork 73 and the hub bracket 5, and between the end cap 74 and the hub bracket 5, in this embodiment, the additional member 7 further includes a first nylon sleeve 78 and a second nylon sleeve 79, the first nylon sleeve 78 being located between the contact surfaces of the welding fork 73 and the hub bracket 5, and the second nylon sleeve 79 being located between the contact surfaces of the end cap 74 and the hub bracket 5.
In the embodiment, a plurality of first grooves 11 are formed on the inner wall surface of the welding sleeve 1; the two cam plates 2 are disposed opposite each other and form a second groove 21 at the outer edge. Referring to fig. 3 to 5, when the apparatus is operating normally, the cam pin 3 has a first state in which one end is fitted into the first groove 11 and the other end is fitted into a partial region of the second groove 21 so that the two cam plates 2 abut against each other; referring to fig. 6 to 8, when the apparatus is overloaded, the torque of the transmission shaft becomes larger, which causes the acting force between the first groove 11 and the cam pin 3 to become larger, that is, the welding sleeve 1 rotates in the Z direction in the drawing, so that one end of the cam pin 3 is separated from the first groove 11 and slides relative to the inner wall surface of the welding sleeve 1, and the other end of the cam pin 3 is driven to move along the second groove 21 toward the center of the cam plate 2 to push the two cam plates 2 to separate (the second state), until the cam pin 3 rotates into the next first groove 11 (the first state is restored), and the clutch continues to operate again.
Further, referring to fig. 9 and 10, the first groove 11 gradually increases in width from outside to inside to form a first inclined guide surface 111, specifically, in the present embodiment, the first inclined guide surface 111 is one side wall surface of the first groove 11; the other side wall surface of the first groove 11 is slightly inclined to form the introduction surface 112, and the inclination angle of the introduction surface 112 with respect to the center plane of the first groove 11 is smaller than that of the first inclined guide surface 111, so that on one hand, the inclination can play a role in buffering, one end of the cam pin 3 can smoothly be embedded into the first groove 11 again after normally slipping, and on the other hand, the cam pin 3 can be prevented from being separated from the first groove 11 from the introduction surface 112. The cam pin 3 includes a first portion 31, specifically, the first portion 31 gradually increases in width from outside to inside to form a first inclined guide surface 111 that cooperates with each other to enable the first portion 31 to be disengaged from a second inclined guide surface 311 of the first groove 11. It should be noted that the term from outside to inside in the present application means from the outside of the clutch to the inside of the clutch.
Still further, referring to fig. 11 and 12, the second groove 21 includes a first face 211 and a second face 212 on the cam plates 2, specifically, the first face 211 and the second face 212 smoothly transition so that the cam pin 3 slides, and a minimum distance between the first faces 211 on the two cam plates 2 is larger than a maximum distance between the second faces 212 on the two cam plates 2; that is, the second groove 21 formed by the first surface 211 and the second surface 212 gradually decreases in width from outside to inside, and the second groove 21 may be configured as two inverted trapezoid structures connected by an arc segment, specifically may be configured according to actual use conditions, and may be configured such that the cam pin 3 slides and pushes up two opposing cam plates 2. The cam pin 3 includes a second portion 32, the second portion 32 gradually decreasing in width from outside to inside to form a third inclined guide surface 321 such that the second portion 32 is located between the first surfaces 211 when the cam pin 3 is in the first state, and the second portion 32 is located between the two second surfaces 212 when the cam pin 3 is in the second state.
Referring to fig. 13, in the present embodiment, the monitoring device 6 includes a vibration detection system 61 for detecting the vibration frequency of the clutch, the vibration detection system 61 is mounted on the hub bracket 5, and the vibration detection system 61 includes a vibration detection sensor and a wireless transmission module. The monitoring device 6 further comprises an on-board control system 62 and a screen display 63; the vehicle-mounted control system 62 and the vibration detection system 61 are wirelessly transmitted, and the vehicle-mounted control system 62 is connected with the screen display 63. The on-board control system 62 and the screen display 63 may be powered by on-board batteries.
Specifically, the vibration detection system 61 is used to detect real-time frequency values during clutch use. The vehicle control system 62 includes a first comparison module 621, a working condition judgment standard setting module 622, a statistics module 623, and a second comparison module 624. The working condition judgment standard setting module 622 is configured to set a working condition judgment standard, provide a judgment basis for the first comparison module 621, and the first comparison module 621 obtains a real-time frequency value detected by the vibration detection system 61, compares the real-time frequency value with a comparison standard of the working condition judgment standard setting module 622, and obtains a first comparison result, where the first comparison result includes a normal working non-slip working condition, a low torque slip working condition, a normal slip working condition, a high torque slip working condition, and a stuck working condition, and the result display module 631 of the screen display 63 can display the first comparison result to prompt an operator to perform a next operation, such as continuous use, clutch replacement, or clutch maintenance; the statistics module 623 is configured to obtain a first comparison result, and count the number of times of the normal slip condition in the first result; the second comparison module 624 is configured to obtain the number of times of the normal slip condition counted by the counting module 623, determine the magnitude of the normal slip condition and the designed lifetime, and generate a second comparison result, and the result display module 631 of the screen display 63 may display the second comparison result to prompt the operator to perform the next operation, such as continuing to use or replacing the clutch.
Example two
Referring to fig. 14 to 17, based on the above-described example one, the present embodiment differs in that: the noise reduction member 4 comprises nylon, and the noise reduction member 4 is located at least between the contact surfaces of the weld sleeve 1 and the cam pin 3, between the contact surfaces of the cam plate 2 and the cam pin 3, and between the contact surfaces of the two opposing cam plates 2.
Specifically, in this embodiment, the noise reduction member 4 is covered on the outer wall surface of the cam plate 2 and the inner wall surface of the welding sleeve 1, so that the wear of the cam plate 2 and the welding sleeve 1 can be prevented while noise is reduced, the service lives of the cam plate 2 and the welding sleeve 1 are prolonged, the coverage area of the noise reduction member 4 can be increased, the stability of the installation of the noise reduction member 4 is increased, and the problem that the noise reduction member 4 is peeled off due to long-term sliding of the cam pin 3 and the noise reduction member 4 to affect the use of the clutch is solved. Of course, in other embodiments, the noise reduction member 4 may be provided not on the inner wall surface of the welding sleeve 1 but on the outer wall surface of the cam plate 2 and the outer wall surface of the cam pin 3; the noise reduction member 4 may be provided locally on the outer wall surface or the outer wall surface of the cam plate 2, the welding sleeve, and the cam pin 3.
It can be appreciated that the noise reduction member 4 (nylon) only covers one layer (the thickness of the coverage of each position is the same) along the outer wall surfaces of the welding sleeve 1 and the cam plate 2, so that the structure of the first groove 11 and the first inclined guide surface 111 thereof on the welding sleeve 1 is not affected, the structure of the first surface 211 and the second surface 212 of the cam plate 2 is not affected, the matching relationship between the surfaces is not affected, and the operation of the clutch is not affected.
Example three
Referring to fig. 18, based on the first or second embodiment, the present embodiment also discloses a method for monitoring a cam clutch, which includes,
s1: setting a working condition judgment standard. The working conditions comprise a normal working non-slip working condition, a low-torque slip working condition, a normal slip working condition, a high-torque slip working condition and a clamping working condition.
The determination criteria may be based on the designed torque limit torque T for cam clutches of different specifications, with propeller shaft torques at different operating conditions set on the onboard control system 62. And judging which working condition of the clutch occurs according to the frequency generated when the cam clutch vibrates and slips in the range of the torque of the transmission shaft under different working conditions (the frequency is determined according to the data detected by the cam clutch before delivery).
Specifically, the method comprises the steps of obtaining design torque limit T according to design parameters of the clutch, setting corresponding transmission shaft torque interval values or determined values under different working conditions, and determining frequency according to data detected by the cam clutch before delivery.
For example, see FIG. 19, where the Y1 drive shaft is operated at a frequency that does not slip; y2 is a frequency of the slip of the propeller shaft (the frequency of the slip generation is independent of the torque), and it is noted that the values of Y1 and Y2 are determined based on data detected by the cam clutch before shipment.
The torque between intervals X1-X2 is low torque slip, indicating that the internal parts wear, resulting in the clutch being in a low torque slip condition, where x1=80%t, x2=95%t.
Between the intervals X2-X3, a normally designed slip torque is established, at which time it is determined that the clutch is in a normal slip condition, wherein x2=95%t and x3=105%t.
The high torque slip between intervals X3-X4 indicates that there is a stuck internal component, and at this time it can be determined that the clutch is in high torque slip condition, where x3=105%t and x4=120%t.
The clutch is stuck between the sections X4 to X5, which indicates that the internal parts are stuck, and the clutch is no longer slipping, and at this time, it can be determined that the clutch is in a stuck condition, wherein x4=120%t, x5=200%t.
Here, X1, X2, X3, X4, and X5 are drive shaft torques under different conditions set based on the designed torque limit torque T of the cam clutch of different specifications, and Y1 and Y2 are frequencies determined based on data detected by the cam clutch before shipment.
S2: a real-time frequency value of the clutch is acquired.
S3: and obtaining a first comparison result according to the working condition judgment standard and the real-time frequency value, and determining the real-time working condition according to the first comparison result.
Further, the method further comprises the steps of: judging whether the occurrence times of the normal slip working condition are larger than the design life of the clutch, and acquiring a second comparison result.
Still further, the method further comprises: the first comparison result and the second comparison result are displayed through the screen display 63, and of course, in other embodiments, the first comparison result and the second comparison result may also be displayed through different display screens, and the operator may be prompted in other manners, for example, by different sounds to give an alarm corresponding to different working conditions.
The above embodiments are only preferred embodiments of the present application, and the scope of the present application is not limited thereto, but any insubstantial changes and substitutions made by those skilled in the art on the basis of the present application are intended to be within the scope of the present application as claimed.
Claims (10)
1. A cam clutch, characterized by comprising a welding sleeve (1), two cam discs (2) and a cam pin (3);
a plurality of first grooves (11) are formed in the inner wall surface of the welding sleeve (1);
the two cam disks (2) are arranged opposite to each other and form a second groove (21) at the outer edge;
the cam pin (3) has a first state in which one end is fitted into the first groove (11) and the other end is fitted into a partial region of the second groove (21) so that the two cam plates (2) are abutted against each other;
the cam pin (3) is also provided with a second state that one end is separated from the first groove (11) and slides relative to the inner wall surface of the welding sleeve (1) so as to drive the other end of the cam pin (3) to move along the second groove (21) towards the center of the circle of the cam disc (2) to push the two cam discs (2) to be separated;
the device further comprises a noise reduction piece (4), wherein the noise reduction piece (4) is at least positioned between the contact surfaces of the welding sleeve (1) and the cam pin (3), between the contact surfaces of the cam disc (2) and the cam pin (3) and between the contact surfaces of two opposite cam discs (2);
the clutch control system also comprises a monitoring device (6) for monitoring and judging the working condition of the clutch.
2. A cam clutch according to claim 1, characterized in that the first groove (11) increases in width gradually from outside to inside to form a first inclined guide surface (111);
the cam pin (3) comprises a first part (31), wherein the width of the first part (31) is gradually increased from outside to inside so as to form a second inclined guide surface (311) which is matched with the inclined guide surface (111) and further enables the first part (31) to be separated from the first groove (11).
3. A cam clutch according to claim 1 or 2, characterized in that the second groove (21) comprises a first face (211) and a second face (212) on the cam discs (2), and that the spacing between the first faces (211) on two cam discs (2) is greater than the spacing between the second faces (212) on two cam discs (2);
the cam pin (3) comprises a second portion (32), wherein the width of the second portion (32) gradually decreases from outside to inside, so that the second portion (32) is positioned between two first faces (211) when the cam pin (3) is in the first state, and the second portion (32) is positioned between two second faces (212) when the cam pin (3) is in the second state.
4. A cam clutch according to claim 1, characterized in that the noise reducing member (4) comprises nylon;
the nylon covers the outer wall surface of the cam disc (2) and the inner wall surface of the welding sleeve (1).
5. A cam clutch according to claim 1, further comprising a hub carrier (5);
the monitoring device (6) comprises a vibration detection system (61) for detecting the vibration frequency of the clutch, and the vibration detection system (61) is mounted on the hub bracket (5).
6. A cam clutch according to claim 5, characterized in that the monitoring device (6) further comprises an on-board control system (62) and a screen display (63);
the vehicle-mounted control system (62) and the vibration detection system (61) are in wireless transmission; the vehicle-mounted control system (62) is connected with the screen display (63).
7. A method of monitoring a cam clutch as claimed in any one of claims 1 to 6, characterised by: comprising the steps of (a) a step of,
setting a working condition judgment standard, wherein the working conditions comprise a normal working non-slip working condition, a low-torque slip working condition, a normal slip working condition, a high-torque slip working condition and a clamping working condition;
acquiring a real-time frequency value of a clutch;
and acquiring a first comparison result according to the working condition judgment standard and the real-time frequency value, and determining a real-time working condition according to the first comparison result.
8. The monitoring method according to claim 7, wherein the set condition judgment criteria includes;
setting transmission shaft torque intervals under different working conditions based on the designed torque limiting torque of the cam clutch with different specifications;
determining a standard frequency value based on the cam clutch design parameters;
and constructing the relation data of the transmission shaft torque interval and the standard frequency value under different working conditions.
9. The method of monitoring of claim 7, further comprising: and judging whether the occurrence times of the normal slip working condition are larger than the design life of the clutch, and acquiring a second comparison result.
10. The method of monitoring according to claim 9, further comprising: the first comparison result and/or the second comparison result is displayed by a screen display (63).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311404862.6A CN117128258A (en) | 2023-10-27 | 2023-10-27 | Cam clutch and monitoring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311404862.6A CN117128258A (en) | 2023-10-27 | 2023-10-27 | Cam clutch and monitoring method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117128258A true CN117128258A (en) | 2023-11-28 |
Family
ID=88851192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311404862.6A Pending CN117128258A (en) | 2023-10-27 | 2023-10-27 | Cam clutch and monitoring method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117128258A (en) |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB342176A (en) * | 1929-04-02 | 1931-01-29 | George Frederick Thomas | Improvements in and relating to clutches |
| JPS63293333A (en) * | 1987-05-14 | 1988-11-30 | イエアン・ヴァルテルシャイト・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング | Torque limiting clutch |
| CN1072250A (en) * | 1991-11-14 | 1993-05-19 | 海液科学公司 | The improvement of helical gear, bevel gear and worm gear pair structure |
| US20040112705A1 (en) * | 2002-12-17 | 2004-06-17 | Watt Duane O. | Parallel shift clutch |
| EP1731788A1 (en) * | 2005-06-07 | 2006-12-13 | Peugeot Citroen Automobiles SA | Method and device for monitoring a clutch slip in a transmission with an acyclic torque source |
| CN202883800U (en) * | 2012-09-29 | 2013-04-17 | 浙江中马汽车变速器股份有限公司 | Novel release fork connecting structure for automobile clutch |
| CN103527748A (en) * | 2012-07-03 | 2014-01-22 | 洪涛 | Space wedge type multi-groove driving wheel and lifting equipment with same |
| CN103836183A (en) * | 2012-11-27 | 2014-06-04 | 福特全球技术公司 | Method used for power transmission system possessing transmission and clutch |
| CN204755661U (en) * | 2015-07-30 | 2015-11-11 | 长城汽车股份有限公司 | Friction clutch and car |
| CN206054589U (en) * | 2016-08-31 | 2017-03-29 | 济宁元昇机电设备有限公司 | A kind of mechanical swelled brake unit |
| JP2017150538A (en) * | 2016-02-23 | 2017-08-31 | Ntn株式会社 | Reverse input shutoff device |
| US20200256459A1 (en) * | 2019-02-11 | 2020-08-13 | GM Global Technology Operations LLC | Model predictive control of torque converter clutch slip |
| CN112146876A (en) * | 2020-09-22 | 2020-12-29 | 长春一东离合器股份有限公司苏州研发中心 | Push rod displacement monitoring mechanism of vehicle clutch |
| CN112703331A (en) * | 2018-09-12 | 2021-04-23 | 日本精工株式会社 | Electric motor with reverse input disconnect clutch |
-
2023
- 2023-10-27 CN CN202311404862.6A patent/CN117128258A/en active Pending
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB342176A (en) * | 1929-04-02 | 1931-01-29 | George Frederick Thomas | Improvements in and relating to clutches |
| JPS63293333A (en) * | 1987-05-14 | 1988-11-30 | イエアン・ヴァルテルシャイト・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング | Torque limiting clutch |
| US4848547A (en) * | 1987-05-14 | 1989-07-18 | Jean Walterscheid Gmbh | Torque limiting clutch |
| CN1072250A (en) * | 1991-11-14 | 1993-05-19 | 海液科学公司 | The improvement of helical gear, bevel gear and worm gear pair structure |
| US20040112705A1 (en) * | 2002-12-17 | 2004-06-17 | Watt Duane O. | Parallel shift clutch |
| EP1731788A1 (en) * | 2005-06-07 | 2006-12-13 | Peugeot Citroen Automobiles SA | Method and device for monitoring a clutch slip in a transmission with an acyclic torque source |
| CN103527748A (en) * | 2012-07-03 | 2014-01-22 | 洪涛 | Space wedge type multi-groove driving wheel and lifting equipment with same |
| CN202883800U (en) * | 2012-09-29 | 2013-04-17 | 浙江中马汽车变速器股份有限公司 | Novel release fork connecting structure for automobile clutch |
| CN103836183A (en) * | 2012-11-27 | 2014-06-04 | 福特全球技术公司 | Method used for power transmission system possessing transmission and clutch |
| CN204755661U (en) * | 2015-07-30 | 2015-11-11 | 长城汽车股份有限公司 | Friction clutch and car |
| JP2017150538A (en) * | 2016-02-23 | 2017-08-31 | Ntn株式会社 | Reverse input shutoff device |
| CN206054589U (en) * | 2016-08-31 | 2017-03-29 | 济宁元昇机电设备有限公司 | A kind of mechanical swelled brake unit |
| CN112703331A (en) * | 2018-09-12 | 2021-04-23 | 日本精工株式会社 | Electric motor with reverse input disconnect clutch |
| US20200256459A1 (en) * | 2019-02-11 | 2020-08-13 | GM Global Technology Operations LLC | Model predictive control of torque converter clutch slip |
| CN112146876A (en) * | 2020-09-22 | 2020-12-29 | 长春一东离合器股份有限公司苏州研发中心 | Push rod displacement monitoring mechanism of vehicle clutch |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3896326B2 (en) | Rotary pump with bearing wear indicator | |
| EP1933032A1 (en) | Compressor and power transmission device | |
| US20110253481A1 (en) | Automatic grease dispensing monitoring and alarm system | |
| CN101432152A (en) | Tire-pressure control apparatus | |
| EP2431714A1 (en) | Slip measurement assembly | |
| EP2872343A1 (en) | Device for controlling the pressure in a vehicle tyre | |
| CN117128258A (en) | Cam clutch and monitoring method | |
| US7728720B2 (en) | System and method for monitoring a status of a member of a vehicle | |
| RU2758313C2 (en) | Door drive | |
| US20120285784A1 (en) | Over-torque protector device for a compressor | |
| CN114033794B (en) | Slewing bearing running state on-line monitoring device | |
| US20180156691A1 (en) | Bearing assembly including oil quality sensor | |
| CN111664192A (en) | Cross axle universal joint with life monitoring and early warning functions | |
| CN113607411A (en) | Torque limiter testing system and method | |
| CN215720365U (en) | Torque limiting clutch | |
| CN115235757A (en) | Gearbox body performance monitoring management system based on data processing | |
| CN216576461U (en) | Press mounting mechanism with pressure detection function | |
| KR20130027814A (en) | Device and method for monitoring journal bearing | |
| CN111017059B (en) | Wheel body internal pressure control system, engineering machinery and control method | |
| CN113531005B (en) | Torque limiting clutch | |
| US11187253B2 (en) | Clutch stack wear sensor system for a power transmission device | |
| WO2012154911A1 (en) | Improved over-torque protector device for a compressor | |
| KR20080064935A (en) | Drive shaft damage diagnosing unit | |
| CN217814641U (en) | Roller pre-tightening mechanism, roller type overrunning clutch and engineering machinery | |
| CN212008149U (en) | Loading testing device of roller mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |