CN115199663B - Torque limiter and automobile - Google Patents
Torque limiter and automobile Download PDFInfo
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- CN115199663B CN115199663B CN202110389924.5A CN202110389924A CN115199663B CN 115199663 B CN115199663 B CN 115199663B CN 202110389924 A CN202110389924 A CN 202110389924A CN 115199663 B CN115199663 B CN 115199663B
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- 230000009467 reduction Effects 0.000 claims abstract description 24
- 238000013016 damping Methods 0.000 claims description 79
- 230000005540 biological transmission Effects 0.000 claims description 14
- 230000003068 static effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 9
- 230000009471 action Effects 0.000 abstract description 8
- 230000008901 benefit Effects 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
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- 238000004891 communication Methods 0.000 description 1
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- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
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- 238000012827 research and development Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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Classifications
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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
- F16D7/00—Slip couplings, e.g. slipping on overload, for absorbing shock
- F16D7/02—Slip couplings, e.g. slipping on overload, for absorbing shock of the friction type
- F16D7/024—Slip couplings, e.g. slipping on overload, for absorbing shock of the friction type with axially applied torque limiting friction surfaces
- F16D7/025—Slip couplings, e.g. slipping on overload, for absorbing shock of the friction type with axially applied torque limiting friction surfaces with flat clutching surfaces, e.g. discs
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
Abstract
The invention discloses a torque limiter and an automobile, which comprise a vibration reduction assembly and a torque limiting assembly which are coaxially arranged, wherein the torque limiting assembly is positioned at the outer side of the vibration reduction assembly in the radial direction of the torque limiter; the torque limiting assembly includes: the friction plate comprises a first shell, a friction plate, an elastic limiting part and an adjusting part. The first shell is of an annular structure; the friction plate is matched with the inner cavity of the first shell and is arranged in the first shell, the vibration reduction assembly is fixedly connected with the friction plate, and one side surface of the friction plate is abutted with one wall surface in the inner wall surface of the first shell; the elastic limiting part is arranged in the first shell and is positioned between the other side surface of the friction plate and the other wall surface in the inner wall surface of the first shell, and in the axial direction of the torque limiter, the elastic limiting part has pressure on the friction plate, and in the use process, the elastic limiting part can deform in the axial direction of the first shell through the action of the adjusting part so as to adjust the pressure applied to the friction plate by the elastic limiting part.
Description
Technical Field
The invention relates to the field of automobile hybrid power systems, in particular to a torque limiter and an automobile.
Background
The environmental problems are becoming more serious, and the characteristics of energy conservation, low emission and the like of the hybrid electric vehicle become one of the key points of automobile research and development. In hybrid powertrain systems, there are generally two power sources: an engine and an electric motor. The hybrid power has the advantages that the hybrid power can output power according to actual running power so as to achieve energy conservation and emission reduction. A torque limiter is located between the engine and the gearbox and functions to transmit engine torque and dampen engine torque fluctuations while achieving a slip-protected driveline under special conditions (shocks). Torque limiters of the prior art have the basic function of transmitting engine torque, attenuating engine speed fluctuations and protecting the driveline. However, when different engine torques need to be matched, redesign, test, assembly and manufacture are needed, and the problems of high cost, long period and the like exist; at the same time, the torque is not adjustable after assembly.
Therefore, the existing torque limiter has a problem of poor applicability.
Disclosure of Invention
The invention aims to solve the problem of poor applicability of a torque limiter in the prior art.
In order to solve the technical problems, the invention provides a torque limiter, which comprises a vibration reduction assembly and a torque limiting assembly which are coaxially arranged, wherein the torque limiting assembly is positioned at the outer side of the vibration reduction assembly in the radial direction of the torque limiter; the torque limiting assembly includes:
the first shell is of an annular structure;
the friction plate is matched with the inner cavity of the first shell, and is arranged in the first shell, the vibration reduction assembly is fixedly connected with the friction plate, and one side surface of the friction plate is abutted against one of the inner wall surfaces of the first shell;
the elastic limiting component is arranged in the first shell, is positioned between the other side surface of the friction plate and the other wall surface of the inner wall surface of the first shell, and has pressure on the friction plate in the axial direction of the torque limiter, wherein one side surface of the friction plate is opposite to the other side surface, and one wall surface of the inner wall surface of the first shell is opposite to the other wall surface;
the adjusting component is arranged on the first shell, and at least part of the adjusting component extends to a position corresponding to the elastic limiting component in the inner cavity of the first shell; wherein,
the elastic limiting part can deform in the axial direction of the first shell through the action of the adjusting part, so that the pressure applied to the friction plate by the elastic limiting part is adjusted.
By adopting the technical scheme, the torque limiter provided by the embodiment is provided with the adjusting part, and in the use process, the adjusting part acts to link the elastic limiting part to deform in the axial direction of the first shell so as to adjust the pressure applied to the friction plate by the elastic limiting part, further adjust the pressure of the elastic limiting part to the friction plate, realize the torque limiting capacity of the torque limiter, be applicable to engines with different torque sizes and have better applicability.
Further, another embodiment of the present invention provides a torque limiter, the elastic limiting member including a moving block and a diaphragm spring; wherein,
the diaphragm spring is arranged on the other side face of the friction plate and is connected with the other wall face of the inner wall face of the first shell, one end of the diaphragm spring is connected to the other wall face of the inner wall face of the first shell, the other end of the diaphragm spring is abutted against the moving block, the diaphragm spring has pressure for the moving block to press the friction plate in the axial direction of the torque limiter, and two ends of the other wall face of the inner wall face of the first shell are respectively connected with one wall face and the other wall face of the inner wall face of the first shell; wherein,
the movement block can be moved in the radial direction of the first housing relative to the friction plate by the action of the regulating member, so that the other end of the diaphragm spring slides relative to the movement block to regulate the pressure of the diaphragm spring on the movement block in the axial direction of the torque limiter.
By adopting the technical scheme, the elastic limiting component in the embodiment comprises the moving block and the diaphragm spring, in the use process, the moving block is pushed by the adjusting component to move relative to the friction plate, and the diaphragm spring is extruded to deform, so that the pressure applied to the moving block by the diaphragm spring is changed, the pressure of the moving block to the friction plate is adjusted, the torque limiting capacity of the torque limiter is adjusted, and the elastic limiting component is applicable to engines with different torque values and has better applicability.
Further, another embodiment of the present invention provides a torque limiter, wherein a side portion of the moving block, which is close to the diaphragm spring, is in a slope structure, and the other end of the diaphragm spring is abutted against the slope structure of the moving block.
By adopting the technical scheme, the side part of the movable block, which is close to the diaphragm spring, is in an inclined surface structure, and the movable block can slide along the inclined surface structure at the other end of the diaphragm spring in the moving process, so that the stability of the movable block is better.
Further, another embodiment of the present invention provides a torque limiter, the adjustment member comprising an adjustment post and an adjustment ring; wherein,
the adjusting ring is arranged in the first shell, is positioned on the inner side of the moving block, is in clearance fit with the other wall surface in the inner wall surface of the first shell, one end of the adjusting column is fixedly connected with the adjusting ring, and the other end of the adjusting column is in sliding connection with the first shell and extends out of the first shell; a boss is formed at a position of the adjusting ring corresponding to the moving block; wherein,
the adjusting ring can be mobilized to rotate relative to the moving block through the movement of the adjusting column relative to the first shell, so that the boss presses the moving block and pushes the moving block to move along the radial direction of the first shell towards the direction approaching to the diaphragm spring.
Further, another embodiment of the present invention provides a torque limiter, wherein the elastic limiting component further includes a moving block spring, and the moving block spring is disposed along a radial direction of the first housing and is pressed between an outer side of the moving block and a further wall surface of the inner wall surface of the first housing; wherein,
the moving block spring is pressed when the boss pushes the moving block to move in a direction approaching the diaphragm spring in a radial direction of the first housing.
Further, another embodiment of the present invention provides a torque limiter, the torque limiting assembly further comprising a central disk and a spring mount; wherein,
the center plate is arranged between the other side surface of the friction plate and the other wall surface of the inner wall surface of the first shell, the center plate is in plane contact with the friction plate, and the spring support is arranged on the center plate and used for mounting the moving block spring.
Further, another embodiment of the present invention provides a torque limiter, wherein a guiding groove adapted to the boss is formed on an inner side portion of the moving block, the boss is a special-shaped boss, and the boss is embedded in the guiding groove when the boss presses the moving block.
Further, another embodiment of the present invention provides a torque limiter, the adjusting posts are at least 3, at least 3 adjusting posts are arranged at intervals along the circumferential direction of the adjusting ring, an adjusting hole corresponding to the adjusting post is arranged on a side wall of the other wall surface of the first housing, the adjusting hole extends along the axial direction of the first housing, and the other end of the adjusting post is connected to the adjusting hole in a sliding manner.
Further, another embodiment of the present invention provides a torque limiter whose torque limiting capacity is calculated by:
m=2×u×f×ra×s; wherein,
m is torsion limiting capacity, u is static friction coefficient, F is axial force of the diaphragm spring, ra is acting radius, and s is safety coefficient.
Further, another embodiment of the present invention provides a torque limiter, where the first housing includes a first upper cover plate and a first lower cover plate, end surfaces of the first upper cover plate and the first lower cover plate in a radial direction are in a step shape, and the first upper cover plate and the first lower cover plate are fastened to each other.
Further, another embodiment of the present invention provides a torque limiter, the vibration damping assembly including a hub, a second housing, a primary vibration damping member and a secondary vibration damping member, the hub being located inside the second housing in a radial direction of the torque limiter; wherein,
the primary vibration reduction component and the secondary vibration reduction component are arranged in the second shell, and are sequentially assembled on the outer ring of the hub in the radial direction of the torque limiter; the second-stage vibration reduction component is connected with the inner wall surface of the second shell, and the second shell is fixedly connected with the friction plate.
Further, another embodiment of the present invention provides a torque limiter, the primary vibration reduction component comprising a predamper drive disk, predamper diaphragm springs and damping fins, the secondary vibration reduction component comprising a primary drive disk, a primary vibration reduction diaphragm spring and a primary vibration reduction spring, the second housing comprising a second upper cover plate and a second lower cover plate; wherein,
the pre-vibration-damping driving disc is assembled on the outer ring of the hub, the pre-vibration-damping spring, the pre-vibration-damping diaphragm spring and the damping sheet are sequentially arranged on one side of the pre-vibration-damping driving disc away from the hub, the main driving disc is arranged on the outer side of the pre-vibration-damping driving disc, the main vibration-damping diaphragm spring and the main vibration-damping spring are sequentially arranged on one side of the main driving disc away from the pre-vibration-damping driving disc, the second upper cover plate is connected with the second lower cover plate in a buckling mode, the main driving disc is arranged between the second upper cover plate and the second lower cover plate, at least part of the main driving disc is connected with one of the second upper cover plate and the second lower cover plate, and the other of the second upper cover plate and the second lower cover plate is connected with the friction plate.
Further, another embodiment of the present invention provides an automobile including a drive assembly and a transmission, the automobile further including the torque limiter of the above structure; wherein,
the torque limiting assembly is in transmission connection with a main shaft of the driving assembly, and the torque limiting assembly is in transmission connection with an input shaft of the gearbox.
By adopting the technical scheme, the automobile in the embodiment adopts the torque limiter with the structure, and the torque limiter with the structure can adjust the torque limiting capacity through the adjusting part, so that the automobile has the advantage of good applicability.
Additional features and corresponding advantages of the invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a schematic overall sectional view of a torque limiter according to embodiment 1 of the present invention;
FIG. 2 is a schematic view of a partially enlarged structure of a torque limiter assembly in the torque limiter according to embodiment 1 of the present invention;
FIG. 3 is a schematic view of a partially enlarged structure of a vibration damping assembly in a torque limiter according to embodiment 1 of the present invention;
FIG. 4 is a top view of a torque limiter provided in embodiment 1 of the present invention;
FIG. 5 is an enlarged view of a portion of FIG. 4;
fig. 6 is a diagram showing the elastic force variation curve of the diaphragm spring of the torque limiter according to embodiment 1 of the present invention.
Reference numerals illustrate:
10. a torque limiting assembly;
100. a first housing;
101. a first upper cover plate; 102. a first lower cover plate; 103. an adjustment aperture;
110. a friction plate;
120. an elastic limit member;
121. a moving block; 1211. a guide groove; 122. a diaphragm spring; 123. a moving block spring;
130. an adjusting member;
131. an adjusting column; 132. an adjusting ring; 1321. a boss;
140. a center plate;
150. a spring support;
20. a vibration damping assembly;
210. a second housing;
211. a second upper cover plate; 212. a second lower cover plate;
220. a primary vibration damping member;
221. a pre-vibration damping drive disc; 222. a pre-damping spring; 223. pre-damping diaphragm springs; 224. a damping sheet;
225. a damping ring;
230. a secondary vibration damping member;
231. a main drive disk; 232. a main damping diaphragm spring; 233. a main damping spring;
30. a hub;
40. and a force transmission steel sheet.
Detailed Description
Further advantages and effects of the present invention will become apparent to those skilled in the art from the disclosure of the present specification, by describing the embodiments of the present invention with specific examples. While the description of the invention will be described in connection with the preferred embodiments, it is not intended to limit the inventive features to the implementation. Rather, the purpose of the invention described in connection with the embodiments is to cover other alternatives or modifications, which may be extended by the claims based on the invention. The following description contains many specific details in order to provide a thorough understanding of the present invention. The invention may be practiced without these specific details. Furthermore, some specific details are omitted from the description in order to avoid obscuring the invention. It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
It should be noted that in this specification, like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Further advantages and effects of the present invention will become apparent to those skilled in the art from the disclosure of the present specification, by describing the embodiments of the present invention with specific examples. While the description of the invention will be described in connection with the preferred embodiments, it is not intended to limit the inventive features to the implementation. Rather, the purpose of the invention described in connection with the embodiments is to cover other alternatives or modifications, which may be extended by the claims based on the invention. The following description contains many specific details in order to provide a thorough understanding of the present invention. The invention may be practiced without these specific details. Furthermore, some specific details are omitted from the description in order to avoid obscuring the invention. It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
It should be noted that in this specification, like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present embodiment, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", "inner", "bottom", etc. are based on the azimuth or positional relationship shown in the drawings, or the azimuth or positional relationship in which the inventive product is conventionally put in use, are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and therefore should not be construed as limiting the present invention.
The terms "first," "second," and the like are used merely to distinguish between descriptions and are not to be construed as indicating or implying relative importance.
In the description of the present embodiment, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; 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 embodiment can be understood in a specific case by those of ordinary skill in the art.
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
Example 1:
one implementation of the present embodiment provides a torque limiter, as shown in fig. 1-4, including a vibration damping assembly 20 and a torque limiting assembly 10 coaxially disposed, and in a radial direction of the torque limiter, the torque limiting assembly 10 is located outside the vibration damping assembly 20; the torque limiting assembly 10 includes: the friction plate comprises a first shell 100, a friction plate 110, an elastic limiting component 120 and an adjusting component 130.
Specifically, in the present embodiment, the first housing 100 has a ring-shaped structure; the friction plate 110 is matched with the inner cavity of the first shell 100 and is arranged in the first shell 100, the vibration reduction assembly 20 is fixedly connected with the friction plate 110, and one side surface of the friction plate 110 is abutted against one wall surface of the inner wall surface of the first shell 100; the elastic limiting member 120 is disposed in the first housing 100 and located between the other side surface of the friction plate 110 and the other wall surface of the inner wall surface of the first housing 100, and the elastic limiting member 120 has a pressure on the friction plate 110 in the axial direction of the torque limiter, wherein one side surface of the friction plate 110 is disposed opposite to the other side surface, and one wall surface of the inner wall surface of the first housing 100 is disposed opposite to the other wall surface; the adjusting member 130 is mounted on the first housing 100, and at least a portion of the adjusting member 130 extends to a position corresponding to the elastic limiting member 120 in the inner cavity of the first housing 100.
In use, the elastic limiting member 120 is deformed in the axial direction of the first housing 100 by the action of the adjusting member 130, so as to adjust the pressure applied to the friction plate 110 by the elastic limiting member 120.
More specifically, the torque limiter provided in this embodiment is provided with the adjusting member 130, and in the use process, the adjusting member 130 acts to link the elastic limiting member 120 to deform in the axial direction of the first housing 100, so as to adjust the pressure applied by the elastic limiting member 120 to the friction plate 110, and further adjust the pressure of the elastic limiting member 120 to the friction plate 110, so as to achieve the torque limiting capability of adjusting the torque limiter, and the torque limiter is applicable to engines with various different torque magnitudes, and has better applicability.
Further, another implementation of the present embodiment provides a torque limiter, as shown in fig. 2, the elastic limiting member 120 includes a moving block 121 and a diaphragm spring 122. The moving block 121 is located between the other side face of the friction plate 110 and the other one of the inner wall faces of the first housing 100, one end of the diaphragm spring 122 is connected to the other one of the inner wall faces of the first housing 100, the other end abuts against the moving block 121, and the diaphragm spring 122 has a pressure in the axial direction of the torque limiter that the moving block 121 presses the friction plate 110 against the moving block 121, and both ends of the other one of the inner wall faces of the first housing 100 are respectively in contact with the one and the other one of the inner wall faces of the first housing 100.
Specifically, in the present embodiment, the movement block 121 can be moved in the radial direction of the first housing 100 with respect to the friction plate 110 by the action of the regulating member 130, so that the other end of the diaphragm spring 122 slides with respect to the movement block 121 to regulate the pressure of the diaphragm spring 122 against the movement block 121 in the axial direction of the torque limiter.
More specifically, the elastic limiting member 120 in this embodiment includes a moving block 121 and a diaphragm spring 122, and in the use process, the moving block 121 is pushed by the adjusting member 130 to move relative to the friction plate 110, and the diaphragm spring 122 is pressed to deform, so as to change the pressure applied by the diaphragm spring 122 to the moving block 121, and further adjust the pressure of the moving block 121 to the friction plate 110, so as to realize the torque limiting capability of the torque limiter, and the torque limiter is applicable to various engines with different torque magnitudes, and has better applicability.
Further, another implementation of this embodiment provides a torque limiter, as shown in fig. 2, a side portion of the moving block 121 near the diaphragm spring 122 is in a slope structure, and the other end of the diaphragm spring 122 abuts against the slope structure of the moving block 121.
Specifically, in this embodiment, the moving block 121 is in an inclined structure near one side of the diaphragm spring 122, so that the other end of the diaphragm spring 122 slides along the inclined structure during the moving process of the moving block 121, and the stability is better.
Further, another implementation of the present embodiment provides a torque limiter, as shown in fig. 2, the adjustment member 130 includes an adjustment post 131 and an adjustment ring 132.
Specifically, in the present embodiment, the adjusting ring 132 is disposed in the first housing 100 and is located at the inner side of the moving block 121, and is in clearance fit with another wall surface of the inner wall surface of the first housing 100, one end of the adjusting post 131 is fixedly connected to the adjusting ring 132, and the other end is slidably connected to the first housing 100 and extends out of the first housing 100; further, a boss 1321 is formed at a position of the adjustment ring 132 corresponding to the moving block 121.
More specifically, in the present embodiment, the movement of the adjustment post 131 relative to the first housing 100 can cause the adjustment ring 132 to rotate relative to the moving block 121, so that the boss 1321 presses the moving block 121 and pushes the moving block 121 to move in a direction approaching the diaphragm spring 122 in the radial direction of the first housing 100.
More specifically, in this embodiment, the adjusting post 131 may be manually driven to rotate around the circumference of the first housing 100, so that the adjusting ring 132 rotates, and finally, the adjusting ring 132 drives the boss 1321 to press the moving block 121, and pushes the moving block 121 to move in a direction approaching to the diaphragm spring 122 along the radial direction of the first housing 100.
Further, another implementation of the present embodiment provides a torque limiter, as shown in fig. 2, the elastic limiting member 120 further includes a moving block spring 123, where the moving block spring 123 is disposed along a radial direction of the first housing 100 and is pressed between an outer side of the moving block 121 and a further wall surface of the inner wall surfaces of the first housing 100, and specifically, the structure shown in fig. 2 may be referred to.
Specifically, in the present embodiment, when the boss 1321 pushes the moving block 121 to move in the radial direction of the first housing 100 in the direction approaching the diaphragm spring 122, the moving block spring 123 is compressed.
Further, another implementation of the present embodiment provides a torque limiter, as shown in fig. 2, the torque limiting assembly 10 further includes a central disk 140 and a spring mount 150.
Specifically, in the present embodiment, the center plate 140 is disposed between the other side surface of the friction plate 110 and the other wall surface of the inner wall surface of the first housing 100, and the center plate 140 is in planar contact with the friction plate 110, and the spring holder 150 is mounted on the center plate 140 for mounting the moving block spring 123.
Further, another implementation of the present embodiment provides a torque limiter, as shown in fig. 2, the inner side portion of the moving block 121 is provided with a guiding groove 1211 formed to be matched with a boss 1321, the boss 1321 is a shaped boss, and when the boss 1321 presses the moving block 121, the boss 1321 is embedded in the guiding groove 1211.
Specifically, in the torque limiting capacity adjustment process of the torque limiter, if the difference between the large diameter and the small diameter of the special-shaped boss 1321 is K, the installation height of the diaphragm spring 122 is h1, the elastic force of the corresponding diaphragm spring 122 to the moving block 121 is M1, the torque limiting capacity at this time is M1, when another engine is matched, the boss 1321 on the adjusting ring 132 pushes the moving block 121 to slide by a distance K through rotating the adjusting column 131 around the circumference of the first casing, the installation height of the diaphragm spring 122 is adjusted to h2, the corresponding spring force at this time is F2, and the torque limiting capacity at this time is M2. Thereby achieving the torque limiting capability of the torque limiter.
Further, another implementation manner of the present embodiment provides a torque limiter, as shown in fig. 2, 4-6, at least 3 adjusting columns 131 are provided, at least 3 adjusting columns 131 are disposed at intervals along a circumferential direction of the adjusting ring 132, an adjusting hole 103 corresponding to the adjusting column 131 is provided on a side wall of the other wall surface of the first housing 100, the adjusting hole 103 extends along an axial direction of the first housing 100, and the other end of the adjusting column 131 is slidably connected to the adjusting hole 103.
Specifically, in the present embodiment, the number of the adjustment columns 131 may be 3, 4, or other numbers, which may be specifically set according to the actual design and the use requirement, and this embodiment is not limited thereto.
Further, another implementation of the present embodiment provides a torque limiter, as shown in fig. 6, whose torque limiting capacity is calculated by:
m=2×u×f×ra×s; where M is the torque limiting capacity, u is the static coefficient of friction, F is the axial force of the diaphragm spring 122, ra is the radius of action of the diaphragm spring 122, and s is the safety coefficient.
Further, another implementation of the present embodiment provides a torque limiter, as shown in fig. 2, the first housing 100 includes a first upper cover plate 101 and a first lower cover plate 102, end surfaces of the first upper cover plate 101 and the first lower cover plate 102 in a radial direction are in a step shape, and the first upper cover plate 101 and the first lower cover plate 102 are fastened to each other.
Specifically, in this embodiment, the first upper cover plate 101 and the first lower cover plate 102 are disposed opposite to each other, and may be connected by bolts, by buckles, or by other detachable connection methods common to those skilled in the art, which may be specifically set according to actual design and use requirements, which is not limited in this embodiment.
Further, another implementation of the present embodiment provides a torque limiter, as shown in fig. 3, the vibration damping assembly 20 includes a hub 30, a second housing 210, a primary vibration damping member 220, and a secondary vibration damping member 230, and the hub 30 is located inside the second housing 210 in a radial direction of the torque limiter.
Specifically, in the present embodiment, the primary vibration damping member 220 and the secondary vibration damping member 230 are each provided in the second housing 210, and the primary vibration damping member 220 and the secondary vibration damping member 230 are sequentially assembled to the outer ring of the hub 30 in the radial direction of the torque limiter; the secondary vibration reduction member 230 is connected to an inner wall surface of the second housing 210, and the second housing 210 is fixedly connected to the friction plate 110.
More specifically, in the present embodiment, the damping performance of the torque limiter can be further improved by providing a two-stage damping member.
Further, another implementation of the present embodiment provides a torque limiter, as shown in fig. 3, the primary vibration damping member 220 includes a pre-vibration damping driving disc 221, a pre-vibration damping spring 222, a pre-vibration damping diaphragm spring 223 and a damping sheet 224, the secondary vibration damping member 230 includes a main driving disc 231, a main vibration damping diaphragm spring 232 and a main vibration damping spring 233, and the second housing 210 includes a second upper cover plate 211 and a second lower cover plate 212.
Specifically, in the present embodiment, the pre-vibration-damping driving disc 221 is assembled on the outer ring of the hub 30, the pre-vibration-damping spring 222, the pre-vibration-damping diaphragm spring 223 and the damping sheet 224 are sequentially disposed on the side, away from the hub 30, of the pre-vibration-damping driving disc 221, the main driving disc 231 is disposed on the outer side of the pre-vibration-damping driving disc 221, the main vibration-damping diaphragm spring 232 and the main vibration-damping spring 233 are sequentially disposed on the side, away from the pre-vibration-damping driving disc 221, of the main driving disc 231, the second upper cover plate 211 and the second lower cover plate 212 are fastened to each other, the main driving disc 231 is disposed between the second upper cover plate 211 and the second lower cover plate 212, at least a portion of the main driving disc 231 is connected with one of the second upper cover plate 211 and the second lower cover plate 212, and the other of the second upper cover plate 211 is connected with the friction sheet 110.
More specifically, in this embodiment, the second upper cover plate 211 and the second lower cover plate 212 are disposed opposite to each other, and may be connected by bolts, or may be connected by buckles, or may be connected by other detachable connection methods that are common to those skilled in the art, and may be specifically set according to actual design and use requirements, which is not limited in this embodiment.
More specifically, in this embodiment, a circumference of the main driving disk 231 may be fixedly connected to the second upper cover plate 211, and the second lower cover plate 212 may be fixedly connected to the friction plate 110; the circumference of the main driving disk 231 may be fixedly connected with the second lower cover plate 212, and the second upper cover plate 211 is fixedly connected with the friction plate 110; alternatively, the edge of the main driving disk 231 is fixedly connected with the second upper cover plate 211 at intervals, and the second lower cover plate 212 is fixedly connected with the friction plate 110; of course, the connection may be performed by other means, which may be specifically set according to the actual design and the use requirement, and this embodiment is not limited thereto.
The present embodiment provides a torque limiter, as shown in fig. 1-3, including a vibration damping assembly 20 and a torque limiting assembly 10 coaxially disposed, and in a radial direction of the torque limiter, the torque limiting assembly 10 is located outside the vibration damping assembly 20; the torque limiting assembly 10 includes: the friction plate comprises a first shell 100, a friction plate 110, an elastic limiting component 120 and an adjusting component 130. The first housing 100 has a ring-like structure; the friction plate 110 is matched with the inner cavity of the first shell 100 and is arranged in the first shell 100, the vibration reduction assembly 20 is fixedly connected with the friction plate 110, and one side surface of the friction plate 110 is abutted against one wall surface of the inner wall surface of the first shell 100; the elastic limiting member 120 is disposed in the first housing 100 and located between the other side surface of the friction plate 110 and the other wall surface of the inner wall surface of the first housing 100, and the elastic limiting member 120 has a pressure on the friction plate 110 in the axial direction of the torque limiter, wherein one side surface of the friction plate 110 is disposed opposite to the other side surface, and one wall surface of the inner wall surface of the first housing 100 is disposed opposite to the other wall surface; the adjusting member 130 is mounted on the first housing 100, and at least a portion of the adjusting member 130 extends to a position corresponding to the elastic limiting member 120 in the inner cavity of the first housing 100. In use, the elastic limiting member 120 can be deformed in the axial direction of the first housing 100 by the action of the adjusting member 130, so as to adjust the pressure applied to the friction plate 110 by the elastic limiting member 120.
Specifically, hub 30 is coupled to the external splines of the transmission input shaft via internal splines, and the external splines of hub 30 are coupled to the internal splines of main drive disk 231 and predamper drive disk 221. Due to the angular difference between the internal splines between the main drive disk 231 and the predamper drive disk 221. 1-5, during use, when hub 30 is rotated, predamper drive disk 221 is first driven to rotate, thereby compressing predamper springs 222 mounted within predamper drive disk 221 such that predamper springs 222 produce a predamper stiffness, predamper drive disk 221 and predamper springs 222 being disposed within predamper chambers; during this rotation, the predamper diaphragm spring 223 is able to generate an axial force and cause the damping shim 224 to damp. As the hub 30 continues to rotate, the main drive disk 231 is driven, compressing the main damping spring 233 fitted within the main drive disk 231 such that the main damping spring 233 generates a main damping stiffness; similarly, the process generates an axial force from the main damping diaphragm spring 232, thereby damping the damping ring 225.
Further, the device further comprises a force transmission steel sheet 40, wherein one side of the force transmission steel sheet 40 is riveted with the first upper cover plate 101 and the first lower cover plate 102, and the other side is riveted with the second upper cover plate 211 and the second lower cover plate 212. When the hub 30 rotates to drive the vibration reduction assembly 20 to rotate, the force transmission steel sheet 40 firstly drives the first upper cover plate 101 and the first lower cover plate 102 to rotate, and the first lower cover plate 102 is linked with the friction plate 110 to rotate under the action of friction force with the friction plate 110.
Regarding torque adjustment: because a certain height cavity h is formed between the first upper cover plate 101 and the first lower cover plate 102, the adjusting ring 132 rotates circumferentially by rotating the adjusting column 131, and the boss 1321 on the adjusting ring 132 drives the moving block 121 to move radially, and the inclined surface thereof can change the compression height of the diaphragm spring 122.
When the torque limiter in the present embodiment is applied to an automobile, the first upper cover plate 101 and the first lower cover plate 102 are bolted to the engine main shaft through peripheral bolt holes. The power transmission route is as follows: engine power is transmitted to the first upper cover plate 101 and the first lower cover plate 102 through the crank bolts, and is transmitted to the force transmission steel sheet 40 and further transmitted to the vibration damping assembly 20 through the friction plate 110, and when an impact working condition is met, the friction plate 110 and the first lower cover plate 102 in the torque limiting assembly 10 slip, so that a transmission system is protected.
Example 2:
the present embodiment provides an automobile including a drive assembly and a transmission (not shown), the automobile further including the torque limiter of embodiment 1.
Specifically, referring to fig. 1-6 in embodiment 1, the torque limiter assembly 10 is in driving connection with a main shaft of the driving assembly, and the torque limiter assembly 10 is in driving connection with an input shaft of the gearbox.
More specifically, the torque limiter with the above structure has the advantage of good applicability because the torque limiter with the above structure can adjust the torque limiting capacity through the adjusting component 130, and when aiming at engines of different models, the torque limiting capacity is adjusted through the adjusting component 130 without replacing the torque limiter, so that the manufacturing cost of the automobile can be further reduced.
While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that the foregoing is a further detailed description of the invention with reference to specific embodiments thereof, and that the practice of the invention is not intended to be limited to those descriptions. Various changes in form and detail may be made therein by those skilled in the art, including a few simple inferences or alternatives, without departing from the spirit and scope of the present invention.
Claims (11)
1. A torque limiter comprises a vibration reduction assembly and a torque limiting assembly which are coaxially arranged, and the torque limiting assembly is positioned on the outer side of the vibration reduction assembly in the radial direction of the torque limiter; the torsion limiting assembly is characterized by comprising:
the first shell is of an annular structure;
the friction plate is matched with the inner cavity of the first shell, and is arranged in the first shell, the vibration reduction assembly is fixedly connected with the friction plate, and one side surface of the friction plate is abutted against one of the inner wall surfaces of the first shell;
the elastic limiting component is arranged in the first shell and comprises a moving block and a diaphragm spring; the movable block is positioned between the other side surface of the friction plate and the other wall surface of the inner wall surface of the first shell, one end of the diaphragm spring is connected to the other wall surface of the inner wall surface of the first shell, the other end of the diaphragm spring is abutted against the movable block, the diaphragm spring has pressure for pressing the friction plate by the movable block on the movable block in the axial direction of the torque limiter, one side surface of the friction plate is opposite to the other side surface, one wall surface of the inner wall surface of the first shell is opposite to the other wall surface, and two ends of the other wall surface of the inner wall surface of the first shell are respectively connected with the one wall surface and the other wall surface of the inner wall surface of the first shell;
an adjustment member comprising an adjustment post and an adjustment ring; the adjusting ring is arranged in the first shell, is positioned on the inner side of the moving block, is in clearance fit with the other wall surface in the inner wall surface of the first shell, one end of the adjusting column is fixedly connected with the adjusting ring, and the other end of the adjusting column is in sliding connection with the first shell and extends out of the first shell; a boss is formed at a position of the adjusting ring corresponding to the moving block; wherein,
the adjusting ring can be adjusted to rotate relative to the moving block through the movement of the adjusting column relative to the first shell, so that the boss presses the moving block and pushes the moving block to move towards the direction close to the diaphragm spring along the radial direction of the first shell, and the pressure of the diaphragm spring on the moving block in the axial direction of the torque limiter is adjusted.
2. The torque limiter according to claim 1, wherein a side of the moving mass adjacent the diaphragm spring is beveled, the other end of the diaphragm spring abutting against the beveled structure of the moving mass.
3. The torque limiter according to claim 1, wherein the elastic limiting member further includes a moving block spring disposed along a radial direction of the first housing and pressed between an outer side of the moving block and a further one of inner wall surfaces of the first housing; wherein,
the moving block spring is pressed when the boss pushes the moving block to move in a direction approaching the diaphragm spring in a radial direction of the first housing.
4. The torque limiter of claim 3, wherein the torque limiting assembly further comprises a central disk and a spring mount; wherein,
the center plate is arranged between the other side surface of the friction plate and the other wall surface of the inner wall surface of the first shell, the center plate is in plane contact with the friction plate, and the spring support is arranged on the center plate and used for mounting the moving block spring.
5. The torque limiter according to claim 1, wherein the inner side portion of the moving block is provided with a guide groove formed to fit with the boss, the boss is a shaped boss, and the boss is fitted in the guide groove when the boss presses the moving block.
6. The torque limiter according to claim 1, wherein at least 3 of the adjustment posts are provided, at least 3 of the adjustment posts are provided at intervals along the circumferential direction of the adjustment ring, and an adjustment hole corresponding to the adjustment post is provided in one side wall of the first housing where the other wall surface is located, the adjustment hole extending in the axial direction of the first housing, and the other end of the adjustment post is slidably connected to the adjustment hole.
7. The torque limiter of claim 1, wherein the torque limiting capacity of the torque limiter is calculated by:
m=2×u×f×ra×s; wherein,
m is torsion limiting capacity, u is static friction coefficient, F is axial force of the diaphragm spring, ra is acting radius, and s is safety coefficient.
8. The torque limiter according to any one of claims 1-7, wherein the first housing comprises a first upper cover plate and a first lower cover plate, the first upper cover plate and the first lower cover plate having radially facing surfaces that are stepped, the first upper cover plate and the first lower cover plate being snap-fit to each other.
9. The torque limiter according to claim 8, wherein the damping assembly comprises a hub, a second housing, a primary damping member and a secondary damping member, the hub being located inside the second housing in a radial direction of the torque limiter; wherein,
the primary vibration reduction component and the secondary vibration reduction component are arranged in the second shell, and are sequentially assembled on the outer ring of the hub in the radial direction of the torque limiter; the second-stage vibration reduction component is connected with the inner wall surface of the second shell, and the second shell is fixedly connected with the friction plate.
10. The torque limiter of claim 9, wherein the primary damping member comprises a predamper drive disc, predamper springs, predamper diaphragm springs and damping strips, the secondary damping member comprises a primary drive disc, primary damping diaphragm springs and primary damping springs, and the second housing comprises a second upper cover plate and a second lower cover plate; wherein,
the pre-vibration-damping driving disc is assembled on the outer ring of the hub, the pre-vibration-damping spring, the pre-vibration-damping diaphragm spring and the damping sheet are sequentially arranged on one side of the pre-vibration-damping driving disc away from the hub, the main driving disc is arranged on the outer side of the pre-vibration-damping driving disc, the main vibration-damping diaphragm spring and the main vibration-damping spring are sequentially arranged on one side of the main driving disc away from the pre-vibration-damping driving disc, the second upper cover plate is connected with the second lower cover plate in a buckling mode, the main driving disc is arranged between the second upper cover plate and the second lower cover plate, at least part of the main driving disc is connected with one of the second upper cover plate and the second lower cover plate, and the other of the second upper cover plate and the second lower cover plate is connected with the friction plate.
11. An automobile comprising a drive assembly and a gearbox, wherein the automobile further comprises a torque limiter according to any one of claims 1-10; wherein,
the torque limiting assembly is in transmission connection with a main shaft of the driving assembly, and the torque limiting assembly is in transmission connection with an input shaft of the gearbox.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110389924.5A CN115199663B (en) | 2021-04-12 | 2021-04-12 | Torque limiter and automobile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110389924.5A CN115199663B (en) | 2021-04-12 | 2021-04-12 | Torque limiter and automobile |
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| CN115199663B true CN115199663B (en) | 2024-02-06 |
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| JP5169656B2 (en) * | 2008-09-10 | 2013-03-27 | アイシン精機株式会社 | Damper device |
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| DE3207047A1 (en) * | 1981-02-27 | 1982-09-16 | Valeo, 75848 Paris | TORSION DAMPING DEVICE, IN PARTICULAR FRICTION COUPLING FOR MOTOR VEHICLES |
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| CN115199663A (en) | 2022-10-18 |
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