CN116123205A - Conical surface matched type shaft connecting structure - Google Patents
Conical surface matched type shaft connecting structure Download PDFInfo
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- CN116123205A CN116123205A CN202310424064.3A CN202310424064A CN116123205A CN 116123205 A CN116123205 A CN 116123205A CN 202310424064 A CN202310424064 A CN 202310424064A CN 116123205 A CN116123205 A CN 116123205A
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- 230000008878 coupling Effects 0.000 claims description 27
- 238000010168 coupling process Methods 0.000 claims description 27
- 238000005859 coupling reaction Methods 0.000 claims description 27
- 230000013011 mating Effects 0.000 claims description 21
- 238000009826 distribution Methods 0.000 claims description 7
- 230000007246 mechanism Effects 0.000 claims description 7
- 230000003068 static effect Effects 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 description 15
- 238000009434 installation Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 12
- 238000004458 analytical method Methods 0.000 description 7
- 238000013461 design Methods 0.000 description 7
- 238000004364 calculation method Methods 0.000 description 6
- 230000010354 integration Effects 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000004445 quantitative analysis Methods 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
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- 238000013459 approach Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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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
- F16C3/00—Shafts; Axles; Cranks; Eccentrics
- F16C3/02—Shafts; Axles
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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
- F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
- F16D1/02—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for connecting two abutting shafts or the like
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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
- F16H—GEARING
- F16H57/00—General details of gearing
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/17—Mechanical parametric or variational design
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
- G06F30/23—Design optimisation, verification or simulation using finite element methods [FEM] or finite difference methods [FDM]
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2111/00—Details relating to CAD techniques
- G06F2111/10—Numerical modelling
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
- G06F2119/14—Force analysis or force optimisation, e.g. static or dynamic forces
Abstract
The invention discloses a conical surface matched type shaft connecting structure, which comprises: gear shaft, cooperation bolt and nut, wherein, offered a through-hole on the motor input shaft, the through-hole includes in proper order from the one end of motor input shaft to its other end: the gear comprises a first matching groove, a second matching groove and a third matching groove, wherein a first step surface is formed between the first matching groove and the second matching groove, a second step surface is formed between the second matching groove and the third matching groove, the end surface of one end of a gear shaft is matched with the surface of the first matching groove, and a threaded hole is formed in one end of the gear shaft; one end of the matching bolt penetrates into the threaded hole, a second external thread is formed at the other end of the matching bolt along the first direction, and the middle part of the matching bolt is arranged in the second matching groove; the nut is arranged at the other end of the matched bolt and is propped against the second step surface; the invention does not need to be additionally provided with a coupler, and has compact structure; the threaded pull rod is convenient to install; the axial position is ensured by conical surface matching, and the assembly precision is high.
Description
Technical Field
The invention relates to the technical field of shaft connection structures, in particular to a conical surface matched type shaft connection structure.
Background
With the progress of industrialization, the total market value and the output value of the mechanical industry in China are steadily increased. In various mechanical transmission, the gear becomes the most widely used transmission mode by virtue of the advantages of high precision, high power density, high reliability, high efficiency and the like. However, in the field of design and production of precision gearboxes, which truly limit the performance of the gearbox, the assembly technique plays a non-negligible role in addition to the precision level of the gear components themselves.
Typically, the gear drive shaft is supported at both ends by bearings on the housing and is connected to the input motor by a coupling. Such a mounting manner may ensure radial mounting accuracy by the bearing, but has a large limitation in a specific application scenario. For example, in bevel gear transmission, the requirement on axial installation precision is very high, bevel gears with insufficient axial installation precision tend to have severe noise and vibration, and meanwhile, the service life is also greatly and negatively affected; and in high power density gearboxes, it is often difficult to arrange additional space for installing the coupling in order to pursue compactness of the structure. Therefore, a more excellent design method of the shaft connection structure is particularly important for improving the product grade of the gear box.
The existing technology for the shaft connection structure design method is as follows: (1) Chinese invention patent, publication number: CN106545520a discloses: the connecting structure of the compressor impeller and the pinion shaft and the processing method thereof mainly adopt tooth-shaped matching for connection in order to ensure the installation precision, but the form has higher requirements on the manufacture and larger weakening of the shaft strength; (2) Chinese invention patent, publication number: CN103261000B discloses: a method for the non-cutting connection of a pinion shaft or an input shaft to a torsion bar of a power steering system, which transmits torque by means of an interference fit of a center rod to two connecting elements, achieves a high space utilization and avoids cutting. However, this technique is not beneficial for improving the assembly accuracy.
Therefore, there is an urgent need for a shaft coupling structure that is simple to manufacture, easy to control in precision, and capable of improving assembly precision.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a tapered surface mating type shaft coupling structure.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: a tapered surface mating type shaft coupling structure, comprising: the gear shaft, the one end and the motor input shaft cooperation of gear shaft, a through-hole has been seted up on the motor input shaft, the through-hole certainly one end of motor input shaft is to its other end includes in proper order: the gear comprises a first matching groove, a second matching groove and a third matching groove, wherein the size of the second matching groove is smaller than that of the third matching groove, a first step surface is formed between the first matching groove and the second matching groove, a second step surface is formed between the second matching groove and the third matching groove, one end of a gear shaft penetrates into the first matching groove, the end surface of one end of the gear shaft is matched with the surface of the first matching groove, a threaded hole is formed in one end of the gear shaft, and a first internal thread is formed in the threaded hole along a first direction; the first external thread matched with the first internal thread is formed at one end of the matching bolt, the second external thread is formed at the other end of the matching bolt along the first direction, and the middle part of the matching bolt is arranged in the second matching groove; the inner surface of the nut is provided with a second internal thread matched with the second external thread, the nut is arranged at the other end of the matched bolt, and the nut abuts against the second step surface; wherein the first direction is one of a clockwise rotation direction or a counterclockwise rotation direction, and the first direction is the same as a direction in which the motor input shaft rotates.
The conical surface matching type shaft connecting structure comprises a gear shaft, wherein one end of the gear shaft is in a circular truncated cone structure, an upper bottom surface with smaller size, a lower bottom surface with larger size and a side surface connected with the upper bottom surface and the lower bottom surface are arranged at one end of the gear shaft, the upper bottom surface is deeper than the lower bottom surface into the first matching groove, the side surface is connected with the surface conical surface of the first matching groove, and the threaded hole is formed in the upper bottom surface.
The conical surface matched type shaft connecting structure is characterized in that an output gear is arranged on the gear shaft, the motor input shaft drives the matched bolt and the gear shaft to rotate, and the gear shaft is driven to an external mechanism by the output gear.
The conical surface matched type shaft connecting structure meets the following formula:
wherein ：
the screwing moment of the nut is set;
The conical surface matched type shaft connecting structure meets the following formula:
wherein ：
is an axial force, i.e. a force in the axial direction of the gear shaft;
The conical surface matched type shaft connecting structure meets the following formula:
wherein ,
is the friction on the side;
The conical surface matched type shaft connecting structure meets the following formula:
wherein ,
for the surface friction moment->
Is an approximation of the numerical integral form of (a);
The conical surface matched type shaft connecting structure is characterized in that the X axis, the Y axis and the Z axis are orthogonally arranged to form an orthogonal rectangular coordinate system, and the node number is a symbol representing a certain point in the coordinate system.
The invention adopts the technology, so that compared with the prior art, the invention has the positive effects that:
(1) According to the invention, the gear shaft and the motor input shaft are tensioned through the matched bolts, and transmission is realized through the pretightening force among the components and friction of the matched surfaces. The coupler is not required to be additionally arranged, so that the structure is compact; the threaded pull rod is convenient to install; the axial position is ensured by conical surface matching, and the assembly precision is high.
(2) The conical surface friction type transmission also has a power protection effect, when the transmission torque exceeds the upper limit of the conical surface matching friction torque and the direction is opposite to the tightening torque on the gear box of the unidirectional rotation transmission, the conical surface matching has relative displacement, the tightening force is further reduced, the power is temporarily stopped, and the characteristics can well protect the safety of gear box equipment.
Drawings
FIG. 1 is a schematic view of a cone-fit shaft coupling according to the present invention.
Fig. 2 is a schematic diagram of a cross-section of a motor input shaft of a cone-fit shaft coupling structure of the present invention.
Fig. 3 is a schematic view of a cross section of a gear shaft of the cone-fit type shaft coupling structure of the present invention.
In the accompanying drawings: 1. a gear shaft; 2. a motor input shaft; 3. matching with bolts; 4. a nut; 11. a threaded hole; 12. an upper bottom surface; 13. a lower bottom surface; 14. a side surface; 15. an output gear; 21. a first mating groove; 22. a second mating groove; 23. a third mating groove; 24. a first step surface; 25. a second step surface; 31. a first external thread; 32. and a second external thread.
Detailed Description
The invention is further described below with reference to the drawings and specific examples, which are not intended to be limiting. FIG. 1 is a schematic view of a cone-fit shaft coupling according to the present invention; FIG. 2 is a schematic view of a device clamping mechanism of the cone-fit shaft coupling structure of the present invention; FIG. 3 is a schematic diagram of a device communication module with a cone-fit shaft connection structure according to the present invention; referring to fig. 1 to 3, a taper fit type shaft coupling structure of a preferred embodiment is shown, comprising: gear shaft 1, cooperation bolt 3 and nut 4, wherein, the one end and the motor input shaft 2 cooperation of gear shaft 1 have seted up a through-hole on the motor input shaft 2, and the through-hole includes in proper order from the one end of motor input shaft 2 to its other end: the gear comprises a first matching groove 21, a second matching groove 22 and a third matching groove 23, wherein the size of the second matching groove 22 is smaller than that of the third matching groove 23, a first step surface 24 is formed between the first matching groove 21 and the second matching groove 22, a second step surface 25 is formed between the second matching groove 22 and the third matching groove 23, one end of the gear shaft 1 penetrates into the first matching groove 21, the end face of one end of the gear shaft 1 is matched with the surface of the first matching groove 21, a threaded hole 11 is formed in one end of the gear shaft 1, and a first internal thread is formed in the threaded hole 11 along a first direction; one end of the matching bolt 3 penetrates into the threaded hole 11, a first external thread 31 matched with the first internal thread is formed at one end of the matching bolt 3, a second external thread 32 is formed at the other end of the matching bolt 3 along the first direction, and the middle part of the matching bolt 3 is arranged in the second matching groove 22; the inner surface of the nut 4 is provided with a second internal thread matched with the second external thread 32, the nut 4 is arranged on the other end of the matched bolt 3, and the nut 4 abuts against the second step surface 25; wherein the first direction is one of a clockwise rotation direction or a counterclockwise rotation direction, and the first direction is the same as the rotation direction of the motor input shaft 2.
In a preferred embodiment, one end of the gear shaft 1 has a truncated cone structure, one end of the gear shaft 1 has an upper bottom surface 12 with a smaller size, a lower bottom surface 13 with a larger size, and a side surface 14 connecting the upper bottom surface 12 and the lower bottom surface 13, the upper bottom surface 12 is deeper into the first mating groove 21 than the lower bottom surface 13, the side surface 14 is connected with a surface conical surface of the first mating groove 21, and the threaded hole 11 is formed in the upper bottom surface 12.
In a preferred embodiment, the gear shaft 1 is provided with an output gear 15, the motor input shaft 2 drives the mating bolt 3 and the gear shaft 1 to rotate, and the gear shaft 1 is driven by the output gear 15 to an external mechanism.
In a preferred embodiment, the tapered mating shaft coupling satisfies the following equation:
wherein ：
the screwing torque of the nut 4;
The foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the embodiments and the protection scope of the present invention.
The present invention has the following embodiments based on the above description: in a further embodiment of the present invention, the tapered mating shaft coupling satisfies the following formula:
wherein ：
is an axial force, i.e. a force in the axial direction of the gear shaft 1;
In a further embodiment of the present invention, the tapered mating shaft coupling satisfies the following formula:
wherein ,
is the friction on the side 14;
In a preferred embodiment of the present invention,
since the integral range in the angular direction is 0 to 2 pi, that is, one complete revolution, the starting point can be arbitrarily defined.
As noted, the following definitions may be made:
the initial position of the angle coincides with the X axis, and the direction of the right hand screw is determined as the positive direction of the angle under the rule of the right hand screw.
In a further embodiment of the present invention, the tapered mating shaft coupling satisfies the following formula:
wherein ,
for the surface friction moment->
Is an approximation of the numerical integral form of (a);
In a further embodiment of the present invention, the X-axis, Y-axis and Z-axis are orthogonally arranged to form an orthogonal rectangular coordinate system, and the node number is a symbol representing a certain point in the coordinate system.
In a preferred embodiment of the present invention,
the present equation sets forth the relationship between the contact parameters, i.e., the contact pretension, and the operating parameters, i.e., the controlled tightening torque, during the structural fit. The internal mechanism is as follows: tension is provided by stretching the connecting bolt, and the matched conical surface has certain initial contact force through a static balance principle.
The beneficial effects can be represented as follows: the meaning of pretension is: and the matching surface is pressed tightly, so that the assembly precision is improved.
The meaning of more accurate control of the tightening torque is: the contact force of the matching surface is controlled, and the friction force of the matching surface is indirectly regulated and controlled, so that the friction moment which can be provided by the matching surface is in a controllable range, the transmission under normal torque can be realized, and the relative sliding can be realized when the torque is overlarge, thereby playing a role in protecting power.
In a preferred embodiment of the present invention,
wherein ：
as shown in fig. 1, the output gear 15 is a right-handed helical gear, and according to the right-handed screw rule, the rotation direction is opposite to the rotation direction of the output gear when the output gear is operated, and the received axial force is from left to right in fig. 1.
The present equation sets forth the structural load response, i.e., the gear shaft 1 to force, the gear parameters, and the load parameters, i.e., the transfer torque. The internal mechanism is as follows: principle of static equilibrium.
Gear parameters are as follows: the spiral angle of the gear, the diameter of the base circle and other parameters.
In a preferred embodiment of the present invention,
as shown in fig. 1, the direction of the Z axis is the direction from left to right in fig. 1; the direction of the X-axis is the direction from the observer to the picture in FIG. 1; the Y-axis is oriented in a bottom-up direction in fig. 1.
The formula sets forth a calculation method for friction torque on the matched conical surface. The internal mechanism is as follows: continuous integration over a curved surface.
In a preferred embodiment of the present invention,
in the formula, n is the total number of nodes of the finite element model and the nodes on the conical surface. I is the node number, which represents the ith node, and the numbering rule can be random.
In the finite element calculation result, the friction force along the X direction on the ith node;
and the same is true. Since the friction result is position dependent, it is written as above. However, the actual node number can also determine the value of the stress, and therefore can be expressed as:
wherein 
I.e. the position of node i in the coordinate system.
The formula is consistent with the previous formula in sense, and has the following benefits: the friction moment continuous integral calculation method in the previous formula is changed into discretization summation, so that a computer can conveniently carry out numerical solution by utilizing finite element analysis data, and the aim of accurately adjusting the coordination performance is fulfilled.
In a preferred embodiment, the motor shaft is the motor rotor hub and is the power input source for the gear system.
In a preferred embodiment, one end of the gear shaft 1 is secured to be conical and surface heat treated to improve surface hardness and wear resistance.
In a preferred embodiment, the first external thread 31 and the output gear 15 are rotated in the same direction, according to the right-hand screw rule, to provide power protection.
In a preferred embodiment, the device is suitable for a coordination performance quantitative analysis method of finite element simulation analysis, and error dimensions, such as conicity errors and the like, are considered when three-dimensional modeling is carried out on the assembly part according to the coordination performance quantitative analysis method of finite element simulation analysis, and model characteristic parameters reflect real manufacturing errors.
Further, in the post-processing stage of the calculation result, the friction force distribution of the contact surface is extracted, and the friction moment of the contact surface can be obtained through a numerical integration method, so that the power transmission performance of the friction matching surface is represented, and the power transmission performance is used as a protection threshold value of the power protection function.
Furthermore, the dependence of the friction fit surface transmission torque on the contact surface pretightening force during installation can be obtained through simulation analysis, and the torque parameter of the screw nut 4 during installation can be determined through the counter-pushing torque.
In a preferred embodiment, the device is suitable for a gear box, especially a high-power-density precise gear box, and the design method of the connection structure of the gear shaft 1 and the power input shaft can ensure radial and axial installation precision and structural compactness, can play a role in power protection and has reference value for improving the quality of the gear box.
In a preferred embodiment, the motor input shaft 2 is a motor rotor hub, which serves as a power input source for the gear system. The conical surface of the matching part of the motor input shaft 2 and the gear shaft 1 is connected; the nut 4 can control the pretightening moment through tools such as a moment wrench and the like so as to provide pretightening force for conical surface matching.
In a preferred embodiment, starting from the motor input shaft 2, power is transmitted via conical friction to the gear shaft 1 and then out via the output gear 15.
In a preferred embodiment, there is further provided a method for analyzing the performance of a mating surface based on finite element technology, for the above-mentioned analysis of the installation error, surface design and installation parameter determination of the cone-shaped connection: step 1: in three-dimensional modeling software, a three-dimensional model which accords with the actual geometric dimension of a part is established by considering the conicity error during processing, and the conical surfaces of the motor input shaft 2 and the gear shaft 1 are assembled; step 2: importing the model into CAE analysis software to complete conventional pretreatment including steps of material setting, grid division and the like; step 3: boundary conditions are specified. The motor input shaft 2 is considered to be axially fixed, imposing an axial displacement-free constraint. Estimating the pretightening force of the conical surface according to the moment applied to the nut 4 during pretightening, estimating the axial force according to the transmission power, and applying the axial force as a load to the axial direction of the gear shaft 1 after superposition; step 4: and (5) extracting a calculation result. Acquiring axial displacement of the shaft, and verifying axial installation accuracy; in addition, the friction force of the matching surface is extracted and numerical integration is carried out on the contact surface, so that the maximum driving torque of conical surface matching at the moment can be obtained.
In a preferred embodiment, the device is driven by friction between the pre-tightening force provided by the tightening element and the mating surface. The coupler is not required to be additionally arranged, so that the structure is compact; the threaded pull rod is convenient to install; the axial position is ensured by conical surface matching, and the assembly precision is high.
In a preferred embodiment, the cone friction type transmission provided by the device also has a power protection effect. On a gear box of unidirectional rotation transmission, when the transmission moment exceeds the upper limit of the friction moment of conical surface fit and the direction is opposite to the tightening moment, the relative displacement of conical surface fit occurs, the tightening force is further reduced, and the power is temporarily cut off. This feature can well protect the safety of the gearbox equipment.
In a preferred embodiment, the proposed method of analyzing the mating properties enables quantitative analysis of the mating properties between mating surfaces, thereby guiding the process arrangement: including tolerance design, material selection, heat treatment, etc., has great significance to control the overall performance of the control system and the cost of the product for the designer.
In a preferred embodiment, the tie bolt shank is quenched and tempered to increase tensile properties.
In a preferred embodiment, the heat treatment of the part of the surface of the motor input shaft 2 that mates with the tapered surface of the gear shaft 1 increases the wear resistance.
In a preferred embodiment, the output gear 15 is a right-handed helical gear or a bevel gear, so as to keep the axial force applied to the gear shaft 1 directed to the portion of the motor input shaft 2 matching the conical surface in the gear shaft 1; in a preferred embodiment, the invention further provides a fitting surface performance analysis method based on finite element technology, which is used for the installation error analysis, surface design and installation parameter determination of the conical surface type connection: step 1: in three-dimensional modeling software, a three-dimensional model which accords with the actual geometric dimension of a part is established by considering the conicity error during processing, and the conical surfaces of the motor input shaft 2 and the gear shaft 1 are assembled; as a preferred mode, when three-dimensional modeling is carried out, only key features can be reserved and other structural details are omitted because only the contact mechanical properties of the matching surfaces are concerned; step 2: importing the model into CAE analysis software to complete conventional pretreatment including steps of material setting, grid division and the like; as a preferred approach, neutral axis algorithms are used to sweep the meshing; step 3: boundary conditions are specified. The motor input shaft 2 is considered to be axially fixed, imposing an axial displacement-free constraint. The pretension force is estimated from the moment applied to the nut 4 at the time of pretension, and the axial force is estimated from the transmission power, and is applied as a load to the axial direction of the gear shaft 1 after superposition.
Wherein, the pretightning force can be represented by the formula:
the pulling force is reversely pushed to obtain; step 4: and (5) extracting a calculation result. Acquiring axial displacement of the shaft, and verifying axial installation accuracy; in addition, the friction force of the matching surface is extracted and numerical integration is carried out on the contact surface, so that the maximum driving torque of conical surface matching at the moment can be obtained.
As a preferred mode, the double nine-point simpson integration mode is adopted to carry out approximate numerical integration on the surface friction moment, or the following discrete form of accumulated summation is adopted directly to calculate:
wherein n is the number of nodes on the surface and defines the axis coincident with the Z-axis, i.e. on the axis
。
The foregoing is merely illustrative of the preferred embodiments of the present invention and is not intended to limit the embodiments and scope of the present invention, and it should be appreciated by those skilled in the art that equivalent substitutions and obvious variations may be made using the description and illustrations of the present invention, and are intended to be included in the scope of the present invention.
Claims (8)
1. A tapered surface mating type shaft coupling structure, comprising: the gear shaft, the one end and the motor input shaft cooperation of gear shaft, a through-hole has been seted up on the motor input shaft, the through-hole certainly one end of motor input shaft is to its other end includes in proper order: the gear comprises a first matching groove, a second matching groove and a third matching groove, wherein the size of the second matching groove is smaller than that of the third matching groove, a first step surface is formed between the first matching groove and the second matching groove, a second step surface is formed between the second matching groove and the third matching groove, one end of a gear shaft penetrates into the first matching groove, the end surface of one end of the gear shaft is matched with the surface of the first matching groove, a threaded hole is formed in one end of the gear shaft, and a first internal thread is formed in the threaded hole along a first direction; the first external thread matched with the first internal thread is formed at one end of the matching bolt, the second external thread is formed at the other end of the matching bolt along the first direction, and the middle part of the matching bolt is arranged in the second matching groove; the inner surface of the nut is provided with a second internal thread matched with the second external thread, the nut is arranged at the other end of the matched bolt, and the nut abuts against the second step surface; wherein the first direction is one of a clockwise rotation direction or a counterclockwise rotation direction, and the first direction is the same as a direction in which the motor input shaft rotates.
2. The cone-fit shaft coupling according to claim 1, wherein one end of the gear shaft has a truncated cone structure, one end of the gear shaft has an upper bottom surface with a smaller size, a lower bottom surface with a larger size, and a side surface connecting the upper bottom surface and the lower bottom surface, the upper bottom surface is deeper into the first fitting groove than the lower bottom surface, the side surface is connected with a surface cone of the first fitting groove, and the threaded hole is opened in the upper bottom surface.
3. The cone-fit type shaft coupling structure according to claim 2, wherein the gear shaft is provided with an output gear, the motor input shaft drives the fit bolt and the gear shaft to rotate, and the gear shaft is driven to an external mechanism by the output gear.
4. A tapered shaft coupling as in claim 3, wherein the tapered shaft coupling satisfies the following equation:
wherein ：
the screwing moment of the nut is set;
5. The tapered-fit shaft coupling of claim 4, wherein the tapered-fit shaft coupling satisfies the following formula:
wherein ：
is an axial force, i.e. a force in the axial direction of the gear shaft;
6. The tapered-fit shaft coupling of claim 5, wherein the tapered-fit shaft coupling satisfies the following formula:
wherein ,
is a friction force on the side;
7. The tapered-fit shaft coupling of claim 6, wherein the tapered-fit shaft coupling satisfies the following formula:
wherein ,
for the surface friction moment->
Is an approximation of the numerical integral form of (a);
8. The cone-fit type shaft coupling according to claim 7, wherein the X-axis, the Y-axis and the Z-axis are orthogonally arranged to form an orthogonal rectangular coordinate system, and the node number is a symbol indicating a certain point in the coordinate system.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310424064.3A CN116123205B (en) | 2023-04-20 | 2023-04-20 | Conical surface matched type shaft connecting structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310424064.3A CN116123205B (en) | 2023-04-20 | 2023-04-20 | Conical surface matched type shaft connecting structure |
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| CN116123205A true CN116123205A (en) | 2023-05-16 |
| CN116123205B CN116123205B (en) | 2023-07-25 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201137644Y (en) * | 2007-08-30 | 2008-10-22 | 上海连成（集团）有限公司 | Coupler convenient for detaching and assembling |
| CN103261000A (en) * | 2010-12-21 | 2013-08-21 | 蒂森克虏伯普利斯坦有限公司 | Method for the chipless connection of the pinion or input shaft to the torsion bar of a servo steering system |
| JP2014214855A (en) * | 2013-04-30 | 2014-11-17 | 株式会社東芝 | Flange coupling structure and flange coupling method |
| CN205497330U (en) * | 2015-12-11 | 2016-08-24 | 内蒙古欧意德发动机有限公司 | Gear shaft and gear pressure equipment frock |
| CN106545520A (en) * | 2016-10-31 | 2017-03-29 | 沈阳鼓风机集团股份有限公司 | Compressor impeller and pinion shaft attachment structure and its processing method |
| CN107664175A (en) * | 2016-07-28 | 2018-02-06 | 纳博特斯克有限公司 | Geared system |
| CN213451309U (en) * | 2020-10-22 | 2021-06-15 | 昆山市奋发绝缘材料有限公司 | Better deflector roll of axiality |
| CN217056031U (en) * | 2022-03-20 | 2022-07-26 | 大连创思福液力偶合器成套设备有限公司 | Fixed-charging type hydraulic coupler connecting device |
-
2023
- 2023-04-20 CN CN202310424064.3A patent/CN116123205B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201137644Y (en) * | 2007-08-30 | 2008-10-22 | 上海连成（集团）有限公司 | Coupler convenient for detaching and assembling |
| CN103261000A (en) * | 2010-12-21 | 2013-08-21 | 蒂森克虏伯普利斯坦有限公司 | Method for the chipless connection of the pinion or input shaft to the torsion bar of a servo steering system |
| JP2014214855A (en) * | 2013-04-30 | 2014-11-17 | 株式会社東芝 | Flange coupling structure and flange coupling method |
| CN205497330U (en) * | 2015-12-11 | 2016-08-24 | 内蒙古欧意德发动机有限公司 | Gear shaft and gear pressure equipment frock |
| CN107664175A (en) * | 2016-07-28 | 2018-02-06 | 纳博特斯克有限公司 | Geared system |
| CN106545520A (en) * | 2016-10-31 | 2017-03-29 | 沈阳鼓风机集团股份有限公司 | Compressor impeller and pinion shaft attachment structure and its processing method |
| CN213451309U (en) * | 2020-10-22 | 2021-06-15 | 昆山市奋发绝缘材料有限公司 | Better deflector roll of axiality |
| CN217056031U (en) * | 2022-03-20 | 2022-07-26 | 大连创思福液力偶合器成套设备有限公司 | Fixed-charging type hydraulic coupler connecting device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116123205B (en) | 2023-07-25 |
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