CN217271513U - Shaft coupling for frequency conversion fan - Google Patents
Shaft coupling for frequency conversion fan Download PDFInfo
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- CN217271513U CN217271513U CN202221246514.1U CN202221246514U CN217271513U CN 217271513 U CN217271513 U CN 217271513U CN 202221246514 U CN202221246514 U CN 202221246514U CN 217271513 U CN217271513 U CN 217271513U
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- coupling
- assembly
- fan
- shaft coupling
- motor side
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Abstract
The utility model discloses a shaft coupling for variable frequency fan, including motor side shaft coupling assembly and fan side shaft coupling assembly, motor side shaft coupling assembly includes motor side half-coupling and supports half-coupling, motor side half-coupling with support and connect through joint bearing between the half-coupling to it is fixed to connect through cydariform elastic sleeve assembly, fan side shaft coupling assembly is including connecting half-coupling and fan side half-coupling, fixed mounting has diaphragm group assembly between the one end of connecting half-coupling and the fan side half-coupling, the both ends of intermediate section respectively with support the half-coupling and be connected the tang cooperation of half-coupling to through the bolt fastening. The utility model discloses possess the angle, axial, radial ability of rectifying, have certain damping coefficient's elastomer in normal transmission moment of torsion, avoided the torsional frequency of whole shafting, can not produce torsional vibration, improved life.
Description
Technical Field
The utility model belongs to the technical field of the shaft coupling, concretely relates to shaft coupling for variable frequency fan.
Background
The speed regulation of the large industrial fan generally has two modes, one is through a speed regulation fluid coupling, and the other is through an electric frequency converter. Because the speed regulation range of the speed regulation hydraulic coupler is narrow, and the online speed regulation can not be realized, the electric frequency conversion speed regulation is basically adopted.
Adopt electric variable frequency speed governing will use the converter, and the converter can avoid there being the harmonic, under certain rotational speed, the shafting can produce torsional vibration, consequently the torsional rigidity of shaft coupling can all avoid the torsional frequency of shafting when the design, but if the interval of motor and fan is great, the torsional rigidity of middle section will reduce by a wide margin, thereby just can't avoid the torsional frequency of shafting, then produce torsional vibration, the torsional vibration that produces causes the shafting to damage easily, damage more outstanding is that the diaphragm group of the diaphragm shaft coupling that former fan adopted produces fatigue damage easily, influence the normal use of fan.
Disclosure of Invention
The utility model aims to solve the technical problem that just to above-mentioned prior art is not enough, provides a shaft coupling for variable frequency fan, and it has avoided the torsional frequency of whole shafting, can not produce torsional vibration, has improved life.
The utility model adopts the technical proposal that: the utility model provides a shaft coupling for variable frequency fan, includes motor side shaft coupling assembly, interlude and fan side shaft coupling assembly, motor side shaft coupling assembly includes motor side half-coupling and supports the half-coupling, and motor side half-coupling center fixedly connected with supports the joint bearing that the half-coupling matches, and joint bearing is located the centre bore that supports the half-coupling, and it is fixed to be connected through cydariform elastic sleeve assembly between motor side half-coupling terminal surface and the terminal surface that supports the half-coupling, fan side shaft coupling assembly is including connecting half-coupling and fan side half-coupling, connect the half-coupling and fan side between the half-coupling fixed mounting have a diaphragm group assembly, the both ends of interlude cooperate with the tang that supports the half-coupling and be connected the half-coupling respectively to pass through the bolt fastening.
Preferably, the spherical plain bearing is located in a center hole of one end of the support coupling half close to the motor side coupling half.
The beneficial effects of the utility model reside in that:
(1) the drum-shaped elastic sleeve assemblies are connected and are elastic bodies with certain damping coefficients, so that the torsional frequency of a shaft system can be avoided, and the torsional vibration is avoided;
(2) the joint bearing is arranged, so that the support half-coupling can be supported, and angular deflection is realized between the motor side half-coupling and the support half-coupling, so that torque transmission is realized, and the deviation rectifying capability is realized;
(3) the fan side coupler assembly adopts the membrane group assembly as a flexible piece, and not only has the capability of transmitting torque, but also has the capability of correcting the deviation in the axial direction and the angular direction.
The utility model discloses possess the angle, axial, radial ability of rectifying, have certain damping coefficient's elastomer in normal transmission moment of torsion, avoided the torsional frequency of whole shafting, can not produce torsional vibration, improved life.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1. a motor side coupling assembly; 2. a middle section; 3. a fan side coupling assembly; 11. a motor-side half coupling; 12. supporting the half-couplings; 13. a knuckle bearing; 14. a drum-shaped elastic sleeve assembly; 31. a fan side half coupling; 32. connecting the half couplers; 33. the diaphragm group assembly.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Examples
As shown in fig. 1, the shaft coupling for a variable frequency fan provided in this embodiment includes a motor side shaft coupling assembly 1, a middle joint 2, and a fan side shaft coupling assembly 3, where the motor side shaft coupling assembly 1 includes a motor side half shaft coupling 11 and a support half shaft coupling 12, a knuckle bearing 13 matched with the support half shaft coupling 12 is fixedly connected to the center of the motor side half shaft coupling 11, the knuckle bearing 13 is located in a central hole at one end of the support half shaft coupling 12 close to the motor side half shaft coupling 11, the motor side half shaft coupling 11 and the support half shaft coupling 12 are connected by the knuckle bearing 13, and are connected and fixed between an end face of the motor side half shaft coupling 11 and an end face of the support half shaft coupling 12 by a drum-shaped elastic sleeve assembly 14;
the fan side coupling assembly 3 comprises a connecting half coupling 32 and a fan side half coupling 31, and a membrane group assembly 33 is fixedly arranged between the connecting half coupling 32 and the fan side half coupling 31;
the two ends of the middle section 2 are respectively matched with the rabbets of the support half-coupling 12 and the connecting half-coupling 32 and are fixed through bolts.
The transmission principle is as follows:
the motor side half coupling 11 is connected with the support half coupling 12 through a drum-shaped elastic sleeve assembly 14, the motor side half coupling 11 supports the support half coupling 12 through a joint bearing 13, and angular deflection is allowed between the motor side half coupling 11 and the support half coupling 12, so that torque transmission is realized, and the deviation can be corrected;
the support half coupling 12 is matched with the middle section 2 through a spigot and is connected with the middle section 2 through a bolt to realize torque transmission;
the middle section 2 is matched with a spigot of the connecting half coupling 32 and connected through a bolt to realize torque transmission;
a diaphragm group assembly 33 is arranged between the connecting half coupling 32 and the fan side half coupling 31, and the diaphragm group assembly 33 serves as a flexible piece, so that the diaphragm group assembly has the torque transmission capacity and has the axial and angular deviation rectifying capacity.
The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any modification and replacement based on the technical solution and inventive concept provided by the present invention should be covered within the protection scope of the present invention.
Claims (2)
1. The utility model provides a shaft coupling for frequency conversion fan, includes motor side shaft coupling assembly (1), intermediate section (2) and fan side shaft coupling assembly (3), its characterized in that: the motor side coupling assembly (1) comprises a motor side coupling half (11) and a support coupling half (12), the center of the motor side coupling half (11) is fixedly connected with a joint bearing (13) matched with the support coupling half (12), the joint bearing (13) is positioned in a central hole of the support coupling half (12), the end surface of the motor side coupling half (11) and the end surface of the support coupling half (12) are fixedly connected through a drum-shaped elastic sleeve assembly (14), the fan-side coupling assembly (3) comprises a connecting half coupling (32) and a fan-side half coupling (31), a diaphragm group assembly (33) is fixedly arranged between the connecting half coupling (32) and the fan side half coupling (31), and two ends of the middle section (2) are respectively matched with the rabbets of the support half coupling (12) and the connecting half coupling (32) and are fixed through bolts.
2. The coupler for the variable frequency fan according to claim 1, wherein: the joint bearing (13) is positioned in a central hole at one end of the support half coupling (12) close to the motor side half coupling (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221246514.1U CN217271513U (en) | 2022-05-23 | 2022-05-23 | Shaft coupling for frequency conversion fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221246514.1U CN217271513U (en) | 2022-05-23 | 2022-05-23 | Shaft coupling for frequency conversion fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217271513U true CN217271513U (en) | 2022-08-23 |
Family
ID=82885529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221246514.1U Active CN217271513U (en) | 2022-05-23 | 2022-05-23 | Shaft coupling for frequency conversion fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217271513U (en) |
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2022
- 2022-05-23 CN CN202221246514.1U patent/CN217271513U/en active Active
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