CN112413000A - Tooth clutch with synchronizing mechanism - Google Patents
Tooth clutch with synchronizing mechanism Download PDFInfo
- Publication number
- CN112413000A CN112413000A CN202011434584.5A CN202011434584A CN112413000A CN 112413000 A CN112413000 A CN 112413000A CN 202011434584 A CN202011434584 A CN 202011434584A CN 112413000 A CN112413000 A CN 112413000A
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- Prior art keywords
- rotor
- transmission
- piece
- shell
- movable
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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
- F16D11/00—Clutches in which the members have interengaging parts
- F16D11/16—Clutches in which the members have interengaging parts with clutching members movable otherwise than only axially
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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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7803—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings
- F16C33/7806—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings for spherical roller bearings
Abstract
The invention provides a tooth clutch with a synchronizing mechanism, and relates to the technical field of clutches. The dog clutch includes a housing assembly, a first rotor, a second rotor, a first transmission assembly, and a second transmission assembly. The first rotor is rotatably disposed in the housing assembly. The second rotor is rotatably arranged on the first rotor. The first transmission assembly comprises a first transmission piece which is arranged on the first rotor and can rotate along with the first rotor, and a first movable piece which is movably arranged on the shell assembly. The first movable piece is used for driving the first transmission piece to be close to the second rotor so as to enable the first transmission piece and the second rotor to be in meshed transmission connection. The second transmission component comprises a second transmission piece which is arranged on the first rotor and can rotate along with the first rotor, and a second movable piece which is movably arranged on the shell component. The second transmission member is in friction type transmission connection with the second rotor. Which can be brought into a toothed engagement in the operating state.
Description
Technical Field
The invention relates to the field of clutches, in particular to a tooth type clutch with a synchronizing mechanism.
Background
The tooth clutch has the characteristics of small volume and large transmitted torque. However, the existing tooth clutch can not carry out meshing action after movement, otherwise, the tooth hitting is easy to damage the clutch. Therefore, the engaging action of the power end and the load end can be carried out only in a static state, the use scene is limited, and the industrial demand cannot be met.
Disclosure of Invention
The invention provides a tooth clutch with a synchronizing mechanism, aiming at solving the problem that the tooth clutch cannot be meshed in a moving state.
In order to solve the technical problem, the invention provides a tooth clutch with a synchronizing mechanism. The transmission device comprises a shell component, a first rotor, a second rotor, a first transmission component and a second transmission component.
The first rotor is rotatably disposed in the housing assembly. The second rotor is rotatably disposed on the first rotor.
The first transmission assembly comprises a first transmission piece which is arranged on the first rotor and can rotate along with the first rotor, and a first moving piece which is movably arranged on the shell assembly. The first movable piece is used for driving the first transmission piece to be close to the second rotor so that the first transmission piece is in meshed transmission connection with the second rotor.
The second transmission assembly comprises a second transmission piece which is arranged on the first rotor and can rotate along with the first rotor, and a second movable piece which is movably arranged on the shell assembly. The second movable piece is used for driving the second transmission piece to be close to the second rotor so as to enable the second transmission piece to be in friction type transmission connection with the second rotor.
Optionally, the housing assembly comprises a housing sleeved over the first rotor.
The first movable piece is slidably arranged on the shell, and a first containing cavity is formed between the first movable piece and the shell. The shell is provided with a first flow inlet communicated with the first containing cavity.
The second movable piece is slidably arranged on the shell, and a second containing cavity is formed between the second movable piece and the shell. The shell is provided with a second flow inlet communicated with the second containing cavity.
Optionally, a guide structure is provided between the first movable member and the housing, and between the second movable member and the housing, so that the first movable member and the second movable member can slide on the housing along an axial direction of the first rotor.
The guide structure comprises a guide post/pin, and guide holes matched with the guide post/pin are formed in the shell, the first movable part and the second movable part.
Optionally, the housing has a first runner disposed along the first rotational axis direction; the first movable piece is arranged on the first sliding groove and is in sealing sliding fit with the side wall of the first sliding groove, so that the first accommodating cavity is formed between the shell and the first movable piece in a clamping manner;
a second sliding groove is formed between the first movable piece and the side wall of the first sliding groove; the second movable piece is arranged on the second sliding groove and is in sealing sliding fit with the side wall of the second sliding groove, so that a second containing cavity is formed among the shell, the first movable piece and the second movable piece in a clamping mode;
the second transmission assembly further comprises a sealing ring configured in the second cavity; the sealing ring is fixedly arranged on the shell to divide the second containing cavity into a movable cavity and a pressure cavity;
the first movable part and the second movable part are both of annular structures; the first movable piece is slidably embedded in the shell; the second movable piece is slidably sleeved on the first movable piece.
Optionally, the first transmission member is sleeved on the first rotor and can rotate along with the first rotor. The first rotor peripheral surface is provided with a first sliding part. The inner peripheral surface of the first transmission piece is provided with a second sliding part which is matched with the first sliding part in a sliding mode along the axial direction.
The second transmission piece is sleeved on the first transmission piece and can rotate along with the first transmission piece. The outer peripheral surface of the first transmission piece is provided with a third sliding part. And a fourth sliding part which is in sliding fit with the third sliding part along the axial direction is arranged on the inner peripheral surface of the second transmission piece.
Optionally, the second rotor is nested in the first rotor. The inner peripheral surface of the second rotor is provided with a fifth sliding part matched with the third sliding part. The first transmission piece can slide along the axial direction of the first rotor, so that the third sliding part and the fourth sliding part are matched to switch the connection state between the first rotor and the second rotor.
Optionally, the outer peripheral surfaces of the first rotor and the first transmission member are provided with external splines extending in the axial direction, and the inner peripheral surfaces of the first transmission member, the second transmission member and the second rotor are provided with internal splines matched with the external splines. The external spline is in sliding fit with the internal spline and can be in transmission connection.
Optionally, the first transmission assembly includes a retainer ring disposed on the first rotor, and a first elastic member disposed between the first transmission member and the retainer ring. So that the first transmission piece is separated from the second rotor under the condition of no external force.
The second transmission component comprises a second elastic piece arranged between the second transmission piece and the second rotor. So that the second transmission piece is separated from the second rotor under the condition of no external force.
Optionally, the first elastic member is a compression spring, and the second elastic member is a belleville spring. The second transmission assembly further comprises a friction plate which is arranged on the second rotor and faces the second transmission piece. So that the second rotor and the second transmission member can be in friction transmission connection.
Optionally, the housing assembly comprises a housing sleeved over the first rotor.
A first bearing is arranged between the first moving piece and the first transmission piece. The inner circumferential surface of the first movable piece and the outer circumferential surface of the first transmission piece are provided with grooves used for clamping the first bearing in opposite directions.
And a second bearing is arranged between the second movable piece and the second transmission piece. And grooves for clamping the second bearing in opposite directions are formed in the inner peripheral surface of the second transmission piece and the outer peripheral surface of the second movable piece.
Under the condition of no external force, a preset first distance A is formed between the first bearing and the shell. A preset second distance B is formed between the first movable piece and the first transmission piece, and a preset third distance C is formed between the second bearing and the shell. And a preset fourth distance D is formed between the second movable piece and the second transmission piece.
The first distance A, the second distance B, the third distance C and the fourth distance D are not more than 2 mm.
Optionally, one of the housing and the second rotor is provided with an annular groove and the other is provided with an annular projection extending towards the groove to form a chevron seal.
The first distance A is 0.8mm to 1.2mm, and the second distance B, the third distance C and the fourth distance D are all 0.4mm to 0.6 mm.
A third bearing is arranged between the first rotor and the shell. A fourth bearing is disposed between the first rotor and the second rotor. And dust covers are arranged on the end surfaces of the third bearing and the fourth bearing.
By adopting the technical scheme, the invention can obtain the following technical effects:
the first transmission piece is driven by the first movable piece to be close to the first rotor and is in friction type transmission connection with the first rotor, so that the first rotor can be combined with the second rotor in a rotating state. Then, when the first rotor and the second rotor rotate synchronously, the first moving part drives the first transmission part to be close to the second rotor and form meshed transmission connection with the second rotor, so that the first rotor can perform meshed transmission with the second rotor in a rotating state, the defect that the toothed clutch cannot perform meshed action after moving is overcome, and the application scene of the toothed clutch is greatly improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a half cross-sectional view of a dog clutch of a first construction;
FIG. 2 is an end projection view of a dog clutch of a first configuration;
FIG. 3 is an exploded view of FIG. 1;
FIG. 4 is an enlarged fragmentary view of FIG. 1 (only one half of which is shown in half section);
fig. 5 is a half sectional view (only half of which is shown) of a tooth clutch of a second construction.
The labels in the figure are: 1-a first movable member; 2-a second movable member; 3-a first transmission member; 4-a second transmission member; 5-a belleville spring; 6-pressure spring; 7-a retainer ring; 8-a second rotor; 9-a first rotor; 10-a guide post; 11-a housing; 12-a first volume; 13-a first inlet; 14-a second inlet; 15-a second cavity; 16-a second bearing; 17-a fourth bearing; 18-a first bearing; 19-a third bearing; 20-sealing ring.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The invention is described in further detail below with reference to the following detailed description and accompanying drawings:
example 1
As shown in fig. 1 to 4, the present embodiment provides a dog clutch having a synchronizing mechanism. It comprises a housing assembly, a first rotor 9, a second rotor 8, a first transmission assembly, a second transmission assembly.
The first rotor 9 is rotatably arranged in the housing assembly. The second rotor 8 is rotatably disposed on the first rotor. The first transmission assembly includes a first transmission member 3 disposed on the first rotor 9 and capable of rotating therewith, and a first movable member 1 movably disposed on the housing assembly. The first movable member 1 is used for driving the first transmission member 3 to approach the second rotor 8, so that the first transmission member 3 and the second rotor 8 are in meshed transmission connection. The second transmission assembly comprises a second transmission member 4 which is arranged on the first rotor 9 and can rotate along with the first rotor, and a second movable member 2 which is movably arranged on the housing assembly. The second movable member 2 is used for driving the second transmission member 4 to approach the second rotor 8, so that the second transmission member 4 is in friction type transmission connection with the second rotor 8.
The engagement type transmission connection mode has the advantages of small volume and large transmission torque. But cannot be combined in the operation process, otherwise, the problems of gear beating and the like can be caused. The second transmission assembly is arranged in the embodiment, so that the first rotor 9 and the second rotor 8 can be in friction transmission connection during rotation operation. When the first rotor 9 and the second rotor 8 run synchronously, the first transmission assembly enables the first rotor 9 and the second rotor 8 to be in meshed transmission connection. Therefore, the first rotor 9 and the second rotor 8 are in meshed transmission connection in the running state, the application scene of the tooth clutch is greatly expanded, and the gear clutch has good practical significance.
Specifically, the second transmission assembly drives the second transmission member 4 to approach the second rotor 8 through the second movable member 2, and forms a friction transmission connection with the second rotor 8, so that the first rotor 9 can be in friction transmission connection with the second rotor 8 in a rotating state. Then, when the first rotor 9 and the second rotor 8 rotate synchronously, the first moving part 1 drives the first transmission part 3 to approach the second rotor 8 and form a meshing type transmission connection with the second rotor 8, so that the first rotor 9 can perform tooth type meshing transmission with the second rotor 8 in a rotating state. The defect that the tooth clutch cannot be engaged after moving is overcome, and the application scene of the tooth clutch is greatly improved.
On the basis of the above embodiment, in an alternative embodiment of the present invention: the housing assembly comprises a housing 11 which is nested in the first rotor 9. In particular, in the present embodiment, a third bearing 19 is provided between the housing assembly and the first rotor 9. The third bearing 19 adopts a double-row angular contact bearing to reduce the axial force when the clutch works and prolong the service life.
On the basis of the above embodiment, in an alternative embodiment of the present invention: the first movable member 1 is slidably disposed on the housing 11, and a first cavity 12 is formed between the first movable member and the housing 11. The housing 11 is provided with a first inlet 13 communicating with the first cavity 12. The second movable member 2 is slidably disposed in the housing 11, and a second cavity 15 is formed between the second movable member and the housing 11. The housing 11 is provided with a second inlet 14 communicating with the second cavity 15.
The first movable piece 1 and the second movable piece 2 are both of annular structures; the first movable piece 1 is slidably embedded in the shell 11; the second movable member 2 is slidably sleeved on the first movable member 1. The housing 11 has a first slide groove provided along the axial direction of the first rotor 9; the first movable part 1 is arranged in the first sliding chute and is in sealing sliding fit with the side wall of the first sliding chute, so that the first accommodating cavity 12 is formed between the shell 11 and the first movable part 1 in a clamping manner; a second sliding groove is formed between the first movable piece 1 and the side wall of the first sliding groove; the second movable part 2 is arranged in the second sliding groove and is in sealing sliding fit with the side wall of the second sliding groove, so that the second accommodating cavity 15 is formed among the shell 11, the first movable part 1 and the second movable part 2 in a clamping manner;
specifically, in the present embodiment, the outer circumferential surfaces of the first movable member 1 and the second movable member 2 are both provided with seal rings.
The housing 11 is internally provided with a first annular groove. The first movable member 1 is an annular structural member with an L-shaped cross section, one side of the first movable member having a protrusion is disposed in the first annular groove, and an end surface of the first movable member and a bottom surface of the first annular groove form a first cavity 12. The second movable member 2 is an annular structural member, and is sleeved on the first movable member 1. The end face of the second moving part 2, the side face of the first annular groove and the peripheral face of the first moving part 1 form a second accommodating cavity 15 together. So that the tooth clutch of the embodiment has compact structure and small volume.
It will be appreciated that in another embodiment, the housing 11 is provided with two said first annular grooves, the first mobile 1 and the second mobile 2 being arranged in one first annular groove, respectively. In other embodiments, the first movable member 1 and the second movable member 2 may not be annular, but may be provided as a plurality of piston members disposed on the housing 11 and forming a cavity with the housing 11. The present invention does not limit the specific structure among the housing 11, the first movable member 1, and the second movable member 2, as long as the first movable member 1 and the second movable member 2 can move along the axial direction of the housing 11.
The housing 11 has a first inlet 13 communicating with the first chamber 12 and a second inlet 14 communicating with the second chamber 15. Fluid is injected into the second containing cavity 15 through the second flow inlet 14, the pressure in the second containing cavity 15 is increased, and the second movable element 2 can be driven, so that the first rotor 9 and the second rotor 8 are in friction type transmission connection. Fluid is injected into the first cavity 12 through the first inlet 13, the pressure in the first cavity 12 is increased, and the first movable member 1 can be driven, so that the first rotor 9 and the second rotor 8 are in meshed transmission connection. The first moving part 1 and the second moving part 2 are driven to move by adopting a fluid pressurization mode, the structure is simple, and the condition of uneven stress cannot occur.
Preferably, in this embodiment, the fluid is a gas, and in other embodiments, the fluid may be a liquid. It will be appreciated that in other embodiments, an electric push rod or other complex means may be used to drive the first and second movable members 1, 2 in the axial direction of the first rotor 9.
On the basis of the above embodiment, in an alternative embodiment of the present invention: guide structures are provided between the first movable member 1 and the housing 11, and between the second movable member 2 and the housing 11, so that the first movable member 1 and the second movable member 2 can slide on the housing 11 in the axial direction of the first rotor 9. Specifically, in the present embodiment, the guiding structure includes a guide post 10/pin, and the housing 11, the first movable member 1, and the second movable member 2 are provided with a guiding hole adapted to the guide post 10/pin. It will be appreciated that in other embodiments the guide means may be a projection provided on the side wall of the first annular groove and a groove provided on the side wall of the first 1 and second 2 mobile members. The present invention is not limited to the guide structure, as long as the structure for limiting the rotation of the first movable member 1 and the second movable member 2 on the housing 11 can be realized.
Through set up guide structure (prevent changeing the fixed pin) in first appearance chamber 12 and second appearance chamber 15, can effectual reduction sealing washer wear and tear and the wearing and tearing of steel part (promptly, casing 11, first moving part 1 and second moving part 2) fitting surface.
On the basis of the above embodiment, in an alternative embodiment of the present invention: the first transmission piece 3 is sleeved on the first rotor 9 and can rotate along with the first rotor. The first rotor 9 is provided with a first sliding portion on its outer peripheral surface. The inner peripheral surface of the first transmission member 3 is provided with a second sliding portion which is in sliding fit with the first sliding portion in the axial direction. The second transmission member 4 is sleeved on the first transmission member 3 and can rotate along with the first transmission member. The outer peripheral surface of the first transmission member 3 is provided with a third sliding portion. The inner peripheral surface of the second transmission member 4 is provided with a fourth sliding portion which is in sliding fit with the third sliding portion in the axial direction. The second rotor 8 is sleeved on the first rotor 9. The inner peripheral surface of the second rotor 8 is provided with a fifth sliding portion fitted with the third sliding portion. The first transmission member 3 is capable of sliding axially along the first rotor 9, and the third sliding portion and the fourth sliding portion are engaged to switch the connection state between the first rotor 9 and the second rotor 8.
Specifically, in the present embodiment, the outer peripheral surfaces of the first rotor 9 and the first transmission member 3 are provided with external splines extending in the axial direction, and the inner peripheral surfaces of the first transmission member 3, the second transmission member 4, and the second rotor 8 are provided with internal splines adapted to the external splines. The external spline is in sliding fit with the internal spline and can be in transmission connection. Preferably, the external splines and the internal splines are involute splines. It is understood that in other embodiments, one of the first sliding part and the second interacting part, the third sliding part and the fourth sliding part, and the third sliding part and the fifth sliding part may be any protrusion arranged along the axial direction of the first rotor 9, and the other is a groove; the first transmission piece 3 and the first rotor 9 can synchronously rotate and can slide along the axial direction of the first rotor 9; the second transmission member 4 rotates synchronously with the first transmission member 3 and can slide along the axial direction of the first rotor 9.
In the present embodiment, the third sliding portion of the first transmission member 3 is engaged with not only the fourth sliding portion of the second transmission member 4 but also the fifth sliding portion of the second rotor 8. The internal structure of the tooth clutch with the synchronizing mechanism is greatly simplified, so that the structure of the clutch is more compact, the installation is more convenient, and the tooth clutch is suitable for more occasions.
On the basis of the above embodiment, in an alternative embodiment of the present invention, the first transmission assembly includes a retainer ring 7 disposed on the first rotor 9, and a first elastic member disposed between the first transmission member 3 and the retainer ring 7. So that the first transmission member 3 is disengaged from the second rotor 8 without being subjected to an external force. The second transmission assembly comprises a second elastic element arranged between the second transmission element 4 and the second rotor 8. So that the second transmission member 4 is disengaged from the second rotor 8 without being subjected to an external force. Specifically, in the present embodiment, the first elastic member is a compression spring 6, and the second elastic member is a belleville spring 5.
It will be appreciated that in other embodiments, the first transmission member 3 and the second transmission member 4 may be driven away from the second rotor 8 by the first movable member 1 and the second movable member 2 moving away from the second rotor 8. Thereby breaking the transmission relationship between the second rotor 8 and the first rotor 9. The present invention is not particularly limited in this regard. The second transmission assembly further comprises a friction plate arranged on the second rotor 8 and facing the second transmission member 4. The second transmission member 4 is a synchronous disc and can be in friction type transmission connection with the friction plate.
Through set up retaining ring 7 on first rotor 9, set up pressure spring 6 between first transmission piece 3 and retaining ring 7 for first moving part 1 can have longer home distance, thereby guarantees the cooperation distance between third sliding part and the fifth sliding part, guarantees the meshing effect. Has good practical significance. And the second transmission assembly is in friction transmission connection with the second rotor 8, and can be disconnected only by a little distance, so that the size of the clutch can be effectively reduced by adopting the belleville spring 5. And the belleville spring 5 is in line contact between the friction plate and the second moving part 2, so that the abrasion is avoided, the service life is long, and the practical significance is good.
A groove for accommodating the belleville spring 5 is formed in the end face of one side, facing the second rotor 8, of the second transmission member 4.
On the basis of the above embodiment, in an alternative embodiment of the present invention, a first bearing 18 is disposed between the first movable member 1 and the first transmission member 3. The inner peripheral surface of the first movable member 1 and the outer peripheral surface of the first transmission member 3 are provided with grooves for holding the first bearing 18 in opposition. A second bearing 16 is arranged between the second movable element 2 and the second transmission element 4. The inner peripheral surface of the second transmission member 4 and the outer peripheral surface of the second movable member 2 are provided with grooves for holding the second bearing 16 in opposition. The first bearing 18 and the housing 11 have a preset first distance a therebetween without external force. A preset second distance B exists between the first movable member 1 and the first transmission member 3, and a preset third distance C exists between the second bearing 16 and the housing 11. A preset fourth distance D exists between the second movable member 2 and the second transmission member 4. The first distance A, the second distance B, the third distance C and the fourth distance D are not more than 2 mm.
Specifically, the bearing has an inner ring and an outer ring that are capable of relative rotation therebetween.
In the present embodiment, the first transmission element 3 is disposed on the inner ring of the first bearing 18, and the first movable element 1 is disposed on the outer ring of the first bearing 18, so that the first transmission element 3 can rotate relative to the first movable element 1. The end surface of the first movable part 1 is flush with one side end surface of the first bearing 18, and a preset second distance B is formed between the end surface of the first movable part and the first transmission part 3. A first preset distance a is provided between the other side end surface of the first bearing 18 and the housing 11.
The second movable element 2 is disposed on an inner ring of the second bearing 16, and the second transmission member 4 is disposed on an outer ring of the second bearing 16, so that the second transmission member 4 can rotate relative to the second movable element 2. The end surface of the second movable member 2 is flush with one side end surface of the second bearing 16, and a preset fourth distance D is provided between the end surface of the second movable member and the second transmission member 4. A preset third distance C is provided between the other side end surface of the second bearing 16 and the housing 11.
In the embodiment, the second pitch B, the third pitch C and the fourth pitch D are not more than 2mm in the absence of an external force. Preferably, the first pitch a is 0.8mm to 1.2mm, and the second pitch B, the third pitch C, and the fourth pitch D are each 0.4mm to 0.6 mm. More preferably, the first pitch a is 1mm, and the second pitch B, the third pitch C, and the fourth pitch D are all 0.5 mm.
On the basis of the above embodiment, in an alternative embodiment of the invention, one of the housing 11 and the second rotor 8 is provided with an annular groove, and the other is provided with an annular projection extending towards the groove to form a toroidal seal. A third bearing 19 is provided between the first rotor 9 and the housing 11. A fourth bearing 17 is arranged between the first rotor 9 and the second rotor 8. The end faces of the third and fourth bearings 17 are provided with dust covers.
Specifically, in the present embodiment, the outer surface of the housing 11 and the outer surface of the second transmission member 4 have the same diameter. On the terminal surface that its two set up in opposite directions, be provided with the recess on the terminal surface of casing 11, be provided with the arch that can stretch into this recess on the second driving medium 4 to hide the gap between casing 11 and the second driving medium 4, prevent that the dust from getting into. Has good practical significance.
In the present embodiment, a third bearing 19 and a fourth bearing 17 are further disposed at two ends of the first rotor 9, respectively, for connecting with the housing 11 and the second rotor 8. A z-shaped dust cover is provided at the end of the first rotor 9 to cover the end faces of the third bearing 19 and the fourth bearing 17, and the dust cover is clamped to the bearings using a shaft clamp.
Example 2
Referring to fig. 5, fig. 5 is a half sectional view of a dog clutch of a second intermediate structure according to the present invention. In this embodiment, the second transmission assembly further includes a sealing ring 20 disposed in the second cavity 15; the sealing ring 20 is fixedly disposed in the housing to divide the second receiving chamber 15 into a movable chamber and a pressure chamber. Specifically, in embodiment 1, a second cavity 15 is formed between the first movable member 1 and the second movable member 2. Therefore, when the first movable element 1 is to move, the pressure in the second cavity 15 is affected, and a pressure control system is required to simultaneously and accurately control the pressures in the two cavities.
In the solution of embodiment 1, when the second container 15 is in a pressurized state, the second movable element 2 drives the second transmission element 4 to engage with the second rotor 8; at this time, if the first movable member 1 is to be driven to move, the pressure in the first cavity 12 needs to be increased to be much higher than the pressure in the second cavity 15, so as to drive the second movable member to move, so as to drive the first transmission member to be combined with the second rotor. Although this function can be achieved, it is easy to cause waste of energy.
In this embodiment, the movable member is driven to move by dividing the second chamber 15 into pressure chambers, and the movable chamber is provided for the first movable member 1 to move. The pressure in the first chamber 12 and the second chamber 15 is not large enough to control the movement of the movable part, which has good practical significance.
Certainly, in order to save more labor, a vent hole can be arranged on the shell to communicate the movable cavity with the outside. It is of course also possible to dispense with a vent, but to reserve sufficient space for compressed air.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A dog clutch having a synchronizing mechanism, comprising:
a housing assembly;
a first rotor (9) rotatably arranged in the housing assembly;
a second rotor (8) rotatably disposed on the first rotor (9);
the first transmission assembly comprises a first transmission piece (3) which is arranged on the first rotor (9) and can rotate along with the first rotor, and a first movable piece (1) which is movably arranged on the shell assembly; the first movable piece (1) is used for driving the first transmission piece (3) to be close to the second rotor (8) so as to enable the first transmission piece (3) and the second rotor (8) to be in meshed transmission connection;
characterized in that the tooth clutch further comprises:
the second transmission assembly comprises a second transmission piece (4) which is arranged on the first rotor (9) and can rotate along with the first rotor, and a second movable piece (2) which is movably arranged on the shell assembly; the second movable piece (2) is used for driving the second transmission piece (4) to be close to the second rotor (8) so that the second transmission piece (4) is in friction type transmission connection with the second rotor (8).
2. The dog clutch according to claim 1, wherein said housing assembly comprises a housing (11) nested in said first rotor (9);
the first movable piece (1) is arranged on the shell (11) in a sliding mode, and a first containing cavity (12) is formed between the first movable piece and the shell (11); the shell (11) is provided with a first flow inlet (13) communicated with the first cavity (12);
the second movable piece (2) is arranged on the shell (11) in a sliding mode, and a second containing cavity (15) is formed between the second movable piece and the shell (11); the shell (11) is provided with a second flow inlet (14) communicated with the second containing cavity (15).
3. The dog clutch according to claim 2, characterized in that guide structures are provided between the first moving member (1) and the housing (11) and between the second moving member (2) and the housing (11) to enable the first moving member (1) and the second moving member (2) to slide on the housing (11) in the axial direction of the first rotor (9);
the guide structure comprises a guide post (10)/a pin, and guide holes matched with the guide post (10)/the pin are formed in the shell (11), the first movable part (1) and the second movable part (2).
4. The tooth clutch according to claim 2, characterized in that said housing (11) has a first runner provided along the axial direction of said first rotor (9); the first moving piece (1) is arranged in the first sliding groove and is in sealing sliding fit with the side wall of the first sliding groove, so that the first containing cavity (12) is formed between the shell (11) and the first moving piece (1) in a clamping mode;
a second sliding groove is formed between the first moving piece (1) and the side wall of the first sliding groove; the second moving part (2) is arranged in the second sliding groove and is in sealing sliding fit with the side wall of the second sliding groove, so that a second containing cavity (15) is formed among the shell (11), the first moving part (1) and the second moving part (2) in a clamping manner;
the second transmission assembly further comprises a sealing ring (20) arranged in the second cavity (15); the sealing ring (20) is fixedly arranged on the shell to divide the second containing cavity (15) into a movable cavity and a pressure cavity;
the first moving part (1) and the second moving part (2) are both of annular structures; the first movable piece (1) is slidably embedded in the shell (11); the second movable piece (2) is slidably sleeved on the first movable piece (1).
5. The dog clutch according to claim 1,
the first transmission piece (3) is sleeved on the first rotor (9) and can rotate along with the first rotor; a first sliding part is arranged on the peripheral surface of the first rotor (9); the inner peripheral surface of the first transmission piece (3) is provided with a second sliding part which is in sliding fit with the first sliding part along the axial direction;
the second transmission piece (4) is sleeved on the first transmission piece (3) and can rotate along with the first transmission piece; a third sliding part is arranged on the peripheral surface of the first transmission piece (3); and a fourth sliding part which is in sliding fit with the third sliding part along the axial direction is arranged on the inner peripheral surface of the second transmission piece (4).
The second rotor (8) is sleeved on the first rotor (9); a fifth sliding part matched with the third sliding part is arranged on the inner circumferential surface of the second rotor (8); the first transmission piece (3) can slide along the axial direction of the first rotor (9), and the third sliding part and the fourth sliding part are matched to switch the connection state between the first rotor (9) and the second rotor (8).
6. The dog clutch according to claim 5,
the outer peripheral surfaces of the first rotor (9) and the first transmission piece (3) are provided with external splines extending along the axial direction, and the inner peripheral surfaces of the first transmission piece (3), the second transmission piece (4) and the second rotor (8) are provided with internal splines matched with the external splines; the external spline is in sliding fit with the internal spline and can be in transmission connection.
7. The dog clutch according to claim 1,
the first transmission assembly comprises a retainer ring (7) arranged on the first rotor (9) and a first elastic piece arranged between the first transmission piece (3) and the retainer ring (7); so that the first transmission piece (3) is separated from the second rotor (8) under the condition of no external force;
the second transmission component comprises a second elastic element arranged between the second transmission element (4) and the second rotor (8); so that the second transmission member (4) is separated from the second rotor (8) under the condition of no external force.
8. The dog clutch according to claim 7, wherein said first elastic member is a compression spring (6) and said second elastic member is a belleville spring (5);
the second transmission component also comprises a friction plate which is arranged on the second rotor (8) and faces the second transmission piece (4); so that a frictional drive connection can be established between the second rotor (8) and the second transmission element (4).
9. The dog clutch according to any of claims 1-8, characterized in that the housing assembly comprises a housing (11) nested in the first rotor (9);
a first bearing (18) is arranged between the first movable piece (1) and the first transmission piece (3); the inner circumferential surface of the first movable piece (1) and the outer circumferential surface of the first transmission piece (3) are provided with grooves for oppositely clamping the first bearing (18);
a second bearing (16) is arranged between the second movable piece (2) and the second transmission piece (4); the inner circumferential surface of the second transmission piece (4) and the outer circumferential surface of the second movable piece (2) are provided with grooves for oppositely clamping the second bearing (16);
under the condition of no external force, a preset first distance A is reserved between the first bearing (18) and the shell (11); a preset second distance B is formed between the first movable piece (1) and the first transmission piece (3), and a preset third distance C is formed between the second bearing (16) and the shell (11); a preset fourth distance D is formed between the second movable piece (2) and the second transmission piece (4);
the first distance A, the second distance B, the third distance C and the fourth distance D are not more than 2 mm.
10. The dog clutch according to claim 9,
one of the housing (11) and the second rotor (8) is provided with an annular groove, and the other is provided with an annular bulge extending towards the groove to form a clip seal;
the first distance A is 0.8mm to 1.2mm, and the second distance B, the third distance C and the fourth distance D are all 0.4mm to 0.6 mm;
a third bearing (19) is arranged between the first rotor (9) and the shell (11); a fourth bearing (17) is arranged between the first rotor (9) and the second rotor (8); the end faces of the third and fourth bearings (17) are provided with dust covers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011434584.5A CN112413000B (en) | 2020-12-10 | 2020-12-10 | Tooth clutch with synchronous mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011434584.5A CN112413000B (en) | 2020-12-10 | 2020-12-10 | Tooth clutch with synchronous mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112413000A true CN112413000A (en) | 2021-02-26 |
| CN112413000B CN112413000B (en) | 2023-08-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011434584.5A Active CN112413000B (en) | 2020-12-10 | 2020-12-10 | Tooth clutch with synchronous mechanism |
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| Country | Link |
|---|---|
| CN (1) | CN112413000B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113531005A (en) * | 2021-08-23 | 2021-10-22 | 厦门南超机械有限公司 | Torque limiting clutch |
| CN113531005B (en) * | 2021-08-23 | 2024-05-17 | 厦门南超机械有限公司 | Torque limiting clutch |
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| Publication number | Publication date |
|---|---|
| CN112413000B (en) | 2023-08-08 |
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Address after: 361023 No. 8, kengping Road, Guankou Town, Jimei District, Xiamen City, Fujian Province Applicant after: XIAMEN SOUTH SUPER MACHINERY Co.,Ltd. Address before: 361023 north side of the first floor of No. 110 (plant 3), Shanmei Road, Jimei District, Xiamen City, Fujian Province Applicant before: XIAMEN SOUTH SUPER MACHINERY Co.,Ltd. |
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