CN210744862U - Rotor structure of tachogenerator - Google Patents
Rotor structure of tachogenerator Download PDFInfo
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- CN210744862U CN210744862U CN201922058103.4U CN201922058103U CN210744862U CN 210744862 U CN210744862 U CN 210744862U CN 201922058103 U CN201922058103 U CN 201922058103U CN 210744862 U CN210744862 U CN 210744862U
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- axostylus axostyle
- tachogenerator
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Abstract
The utility model provides a tachogenerator rotor structure has solved current tachogenerator rotor and external rotary part when butt joint, because the axiality requires the higher even axostylus axostyle stress concentration that will make rotor structure, even axostylus axostyle easily collapses disconnected problem behind the long-term work. The utility model discloses a rotor structure is including linking axostylus axostyle, axle, magnet steel, retaining ring, and the fashioned mode die-casting for the magnet steel is epaxial, links the inside of axostylus axostyle axial and arranges the axle in, is equipped with the annular groove at linking axostylus axostyle tail end, installs the retaining ring in the annular groove. The utility model discloses a tachogenerator rotor structure commonality is good, the reliability is high, has improved current tachogenerator rotor magnet steel circumference and the unreliable current situation of circumference drunkenness to overcome when docking with external rigid rotation part because the axiality requires highly to lead to the even axostylus axostyle stress concentration problem of easily breaking.
Description
Technical Field
The utility model belongs to the technical field of the motor, a tachogenerator rotor structure is related to.
Background
The rotor structure of the tachogenerator in the prior art is mostly a plurality of independent permanent magnet magnetic pole structures in pairs, and the permanent magnet magnetic poles are not easy to assemble and the angle is difficult to ensure that the permanent magnet magnetic poles are evenly distributed when the rotor core is circumferentially distributed. And when the existing tachogenerator rotor is butted with an external rotating part, the stress of the connecting shaft rod of the rotor structure is concentrated due to higher coaxiality requirement, and the connecting shaft rod is easy to break after long-term work.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a tachogenerator rotor that the commonality is good, the reliability is high to improve current tachogenerator rotor magnet steel circumference and the unreliable current situation of circumference drunkenness, and overcome when docking with external rigid rotation part because the axiality requires the height to lead to even axostylus axostyle stress concentration problem of easily breaking.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a tachogenerator rotor structure, its characterized in that, this rotor structure is including linking axostylus axostyle, axle, magnet steel, retaining ring, and the magnet steel is epaxial with die-casting fashioned mode die-casting, links the inside of axostylus axostyle axial and arranges the axle in, is equipped with the annular groove at linking axostylus axostyle tail end, installs the retaining ring in the annular groove.
Furthermore, the connecting shaft rod comprises a small-diameter section cylinder and a large-diameter section cylinder, a first smooth transition step is arranged between the small-diameter section cylinder and the large-diameter section cylinder, four rectangular sections which are symmetrical in pairs along the axial direction are cut along the tail end of the periphery of the large-diameter section cylinder towards the front end direction, and the annular groove is positioned at the tail end of the large-diameter section cylinder after the sections are cut;
the axle includes that the axial connects gradually and integrated into one piece's first cylinder section, the second cylinder section, third cylinder section and fourth cylinder section, wherein first cylinder section, the external diameter of second cylinder section and third cylinder section increases in proper order, the external diameter of fourth cylinder section is less than the external diameter of third cylinder section, and be equipped with interior square hole in the fourth cylinder section, the front end face of the first cylinder section of axle is equipped with cylindrical hole from the front end in interior square hole to the inside of axle simultaneously, and cylindrical hole terminal surface and interior square hole front end have the second rounding off step between the terminal surface, the big diameter section cylinder of even axostylus axostyle is arranged in the interior square hole of the fourth cylinder section of axle, and the annular groove is located the outside of fourth cylinder section terminal surface.
And further, a connecting body for butting with the rotating end of the engine is arranged at the front end of the small-diameter section cylinder.
Further, the axial length of the rectangular section is smaller than that of the cylinder with the large diameter section.
Further, the clearance between each rectangular section and the inner square hole is 0.02mm-0.05 mm.
Furthermore, be equipped with 2 interval spherical projections that set up in second cylinder section periphery, and the symmetry is equipped with 2 planes on every spherical projection.
Furthermore, 4 grooves are uniformly distributed on the outer peripheral surface of the first cylindrical section.
Further, the connecting shaft rod is made of stainless steel materials.
Compared with the prior art, the utility model discloses following beneficial effect has:
(1) the magnetic steel of the rotor structure of the utility model is integrated with the shaft die casting in an integral die casting mode, thereby improving the production efficiency and reducing the consumption of materials;
(2) 2 spherical bulges with two planes are designed on the periphery of the shaft, and the structure can effectively prevent the problem of circumferential and axial play of the magnetic steel under severe vibration conditions;
(3) the connecting shaft rod is in a slender rod-shaped design, the design has good toughness, and the connecting shaft rod and the shaft are connected by adopting a rectangular small gap (the gap is 0.02mm-0.05mm), the connecting mode can ensure that the connecting shaft rod and the shaft rotate synchronously, and can also ensure that the connecting shaft rod moves at a small angle in the circumferential direction with the axis as the circle center, the problem of high coaxiality requirement when the connecting shaft rod is in butt joint with an external rigid rotating part is solved, and the problem of breakage of the connecting shaft rod caused by stress concentration when the connecting shaft rod is in butt joint with the external rotating part can be effectively;
(4) the connecting shaft rod is made of stainless steel materials with high hardness and strength, has good wear resistance, and can ensure long-term effective work under the condition of butt joint with an external rotating part.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic view of the connecting shaft rod of the present invention;
fig. 3 is a schematic view of the shaft structure of the present invention;
FIG. 4 is a schematic view of the connection of the connecting shaft rod to the shaft;
in the figure: 1-connecting the shaft rod; 1-1-small diameter section of cylinder; 1-2-a large diameter section of cylinder; 1-3-linker; 1-4-a first smooth transition step; 1-5-rectangular section; 1-6-annular groove; 2-axis; 2-1-a first cylinder section; 2-1-1-groove; 2-2-a second cylinder section; 2-3-a third cylinder section; 2-4-a fourth cylinder section; 2-4-1-inner square hole; 2-5-spherical bulge; 2-5-1-plane; 2-6-cylindrical inner bore; 2-7-a second smooth transition step; 3-magnetic steel; 4-stop collar.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Examples
Referring to fig. 1-4, the rotor structure of the tachogenerator comprises a connecting shaft lever 1, a shaft 2, a magnetic steel 3 and a stop collar 4, wherein the magnetic steel 3 is die-cast on the shaft 2 in a die-casting forming mode, the connecting shaft lever 1 is axially arranged inside the shaft 2, an annular groove 1-6 is arranged at the tail end of the connecting shaft lever 1, and the stop collar 4 is arranged in the annular groove 1-6.
The connecting shaft rod 1 comprises a small-diameter section cylinder 1-1 and a large-diameter section cylinder 1-2, a first smooth transition step 1-4 is arranged between the small-diameter section cylinder 1-1 and the large-diameter section cylinder 1-2, four rectangular sections 1-5 which are axially symmetrical in pairs are cut along the tail end of the periphery of the large-diameter section cylinder 1-2 towards the front end, and the annular groove 1-6 is positioned at the front end of the large-diameter section cylinder 1-2 after the sections are cut;
the shaft 2 comprises a first cylinder section 2-1, a second cylinder section 2-2, a third cylinder section 2-3 and a fourth cylinder section 2-4 which are axially connected in sequence and integrally formed, wherein the outer diameters of the first cylinder section 2-1, the second cylinder section 2-2 and the third cylinder section 2-3 are sequentially increased, the outer diameter of the fourth cylinder section 2-4 is smaller than the outer diameter of the third cylinder section 2-3, an inner square hole 2-4-1 is formed in the fourth cylinder section 2-4, a cylindrical inner hole 2-6 is formed in the shaft 2 from the front end of the inner square hole 2-4-1 to the front end face of the first cylinder section 2-1 of the shaft 2, and a second smooth transition step 2-7 matched with the first smooth transition step is formed between the tail end face of the cylindrical inner hole 2-6 and the front end face of the inner square hole 2-4-1 A step 2-7, when the connecting shaft rod is arranged in the shaft, the large diameter section cylinder 1-2 of the connecting shaft rod is arranged in the inner square hole 2-4-1 of the fourth cylinder section 2-4 of the shaft, a large-diameter section cylinder 1-2 with a rectangular section 1-5 is arranged in an inner square hole 2-4-1 of a shaft 2, the first smooth transition step 2-7 is jointed with the step surface of the second smooth transition step 2-7, a gap is arranged between the rectangular section 1-5 and the inner square hole 2-4-1, and the clearance between each rectangular section 1-5 and the inner square hole 2-4-1 is 0.02mm-0.05mm, the gap value can be adjusted between 0.02mm and 0.05mm according to the circumferential movement range of the end part of the actual connecting shaft rod, so that the connecting shaft rod and the shaft are connected by a small gap.
And a connecting body 1-3 used for butting with the rotating end of the engine is arranged at the tail end of the small-diameter section cylinder 1-1.
The axial length of the rectangular section 1-5 is smaller than that of the large-diameter section cylinder 1-2.
The clearance between each rectangular section 1-5 and the inner square hole 2-4-1 is 0.02mm-0.05 mm.
The periphery of the second cylindrical section 2-2 is provided with 2 spherical bulges 2-5 which are arranged at intervals and are coaxial with the second cylindrical section 2-2, and each spherical bulge 2-5 is symmetrically provided with 2 planes 2-5-1.
4 grooves 2-1-1 are uniformly distributed on the outer peripheral surface of the first cylindrical section 2-1, and the grooves 2-1-1 are used for mounting a locking nut and a shaft.
The connecting shaft rod 1 is made of high-hardness stainless steel material.
The utility model discloses a magnet steel adopts the outside of die-casting fashioned mode die-casting to the axle, and such structure has improved production efficiency, has reduced the consumption of material to at the epaxial globular arch 2-5 that has planar structure that is equipped with two, the magnet steel die-casting is in the outside of two globular archs 2-5 departments, and the problem of magnet steel circumference and axial float can effectively be prevented to this kind of structure under the harsh vibration condition.
In addition, the connecting shaft lever 1 is designed to be of a slender rod structure, the design toughness is good, the connecting shaft lever is connected with the shaft 2 in a small gap mode (the gap between each rectangular section 1-5 and the inner square hole 2-4-1 is 0.02mm-0.05mm, the gap value can be adjusted between 0.02mm-0.05mm according to the range of circumferential movement desired by the end portion of the connecting shaft lever actually), the connecting shaft lever and the shaft can rotate synchronously in the connecting mode, small-angle movement of the connecting shaft lever in the circumferential direction with the axis as the circle center can be guaranteed, the problem that the coaxiality requirement is high when the connecting shaft lever is in butt joint with an external rigid rotating part is solved, and the problem that the connecting shaft lever is broken due to stress concentration when the connecting shaft lever is in butt joint with. The stop collar 4 is a circular ring formed by bending a stainless steel wire, is clamped in the annular groove 1-6, is arranged in the inner square hole 2-4-1 of the shaft 2 together with the large-diameter section cylinder 1-2 with the rectangular section 1-5, and has a step structure that the step surfaces of the first smooth transition step 2-7 and the second smooth transition step 2-7 are jointed together to play an axial limiting role for the connecting shaft lever 1. The utility model discloses a structure commonality is good, and the reliability is high, but wide application in needs and the occasion of external rotary part butt joint.
The principle and the implementation of the present invention are explained herein by using specific examples, and the above description of the embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (8)
1. The utility model provides a tachogenerator rotor structure, its characterized in that, this rotor structure is including linking axostylus axostyle, axle, magnet steel, retaining ring, and the magnet steel is epaxial with die-casting fashioned mode die-casting, links the inside of axostylus axostyle axial and arranges the axle in, is equipped with the annular groove at linking axostylus axostyle tail end, installs the retaining ring in the annular groove.
2. A tachogenerator rotor structure according to claim 1, wherein said connecting shaft rod comprises a small diameter section of cylinder and a large diameter section of cylinder, a first smooth transition step is provided between the small diameter section of cylinder and the large diameter section of cylinder, four rectangular sections are cut along the direction from the tail end to the front end of the outer circumference of the large diameter section of cylinder, and are axially symmetric in pairs, and said annular groove is located at the tail end of the large diameter section of cylinder after the section is cut;
the axle includes that the axial connects gradually and integrated into one piece's first cylinder section, the second cylinder section, third cylinder section and fourth cylinder section, wherein first cylinder section, the external diameter of second cylinder section and third cylinder section increases in proper order, the external diameter of fourth cylinder section is less than the external diameter of third cylinder section, and be equipped with interior square hole in the fourth cylinder section, the front end face of the first cylinder section of axle is equipped with cylindrical hole from the front end in interior square hole to the inside of axle simultaneously, and cylindrical hole terminal surface and interior square hole front end have the second rounding off step between the terminal surface, the big diameter section cylinder of even axostylus axostyle is arranged in the interior square hole of the fourth cylinder section of axle, and the annular groove is located the outside of fourth cylinder section terminal surface.
3. A tachogenerator rotor structure according to claim 2, wherein at the front end of said small diameter section of cylinder there is a connector for interfacing with the rotating end of the motor.
4. A tachogenerator rotor structure according to claim 2, characterized in that the axial length of said rectangular section is less than the axial length of the cylinder of large diameter.
5. A tachogenerator rotor structure according to claim 2, wherein the clearance between each of said rectangular sections and the inner square hole is 0.02mm-0.05 mm.
6. A tachogenerator rotor structure as claimed in claim 2, wherein there are 2 spherical protrusions spaced around the circumference of the second cylindrical section, and there are 2 planes symmetrically on each spherical protrusion.
7. A tachogenerator rotor structure according to claim 2, wherein there are 4 grooves evenly distributed on the outer circumference of said first cylindrical section.
8. A tachogenerator rotor structure as claimed in claim 1 or 2, wherein the connecting shaft is made of stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922058103.4U CN210744862U (en) | 2019-11-26 | 2019-11-26 | Rotor structure of tachogenerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922058103.4U CN210744862U (en) | 2019-11-26 | 2019-11-26 | Rotor structure of tachogenerator |
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| Publication Number | Publication Date |
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| CN210744862U true CN210744862U (en) | 2020-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922058103.4U Active CN210744862U (en) | 2019-11-26 | 2019-11-26 | Rotor structure of tachogenerator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110971036A (en) * | 2019-11-26 | 2020-04-07 | 沈阳兴华航空电器有限责任公司 | Rotor structure of tachogenerator |
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2019
- 2019-11-26 CN CN201922058103.4U patent/CN210744862U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110971036A (en) * | 2019-11-26 | 2020-04-07 | 沈阳兴华航空电器有限责任公司 | Rotor structure of tachogenerator |
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