CN217107575U - Fastening device for conveniently fixing fan blade main shaft - Google Patents
Fastening device for conveniently fixing fan blade main shaft Download PDFInfo
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- CN217107575U CN217107575U CN202220843290.6U CN202220843290U CN217107575U CN 217107575 U CN217107575 U CN 217107575U CN 202220843290 U CN202220843290 U CN 202220843290U CN 217107575 U CN217107575 U CN 217107575U
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Abstract
The utility model discloses a fastening device for conveniently fixing a main shaft of a fan blade, which comprises a main shaft, wherein a bearing is sleeved at the end part of the main shaft, a plurality of positioning petals are arranged on the outer side of the bearing along the circumferential direction, and a fastening sleeve is sleeved on the outer side of each positioning petal; the inner side surface of the positioning flap is matched with the outer side surface of the bearing, a first inclined surface is arranged on the outer side surface of the positioning flap, a centering taper hole is coaxially arranged on the fastening sleeve and the main shaft, and the centering taper hole is in sliding fit with the first inclined surface; a tension device parallel to the main shaft is arranged between the positioning flap and the fastening sleeve, a through hole for the tension device to pass through is arranged on the positioning flap, one end of the tension device is connected with the fastening sleeve, and the other end of the tension device extends to the outer side of the through hole on the positioning flap and is abutted against the end face of the positioning flap, which is far away from one end of the fastening sleeve; the utility model discloses can realize the convenient installation and the dismantlement of main shaft, effectively improve the efficiency of main shaft dismouting, effectively avoid main shaft and bearing to damage simultaneously.
Description
Technical Field
The utility model belongs to the technical field of fan main shaft fixing device, concretely relates to a fastener that is used for convenient fixed of fan flabellum main shaft.
Background
The main shaft of the fan is a rotating assembly used for installing fan blades and driving the fan blades to rotate, and the main shaft is usually installed inside the fan by sleeving a bearing on the end part of the main shaft and installing the bearing in a bearing hole of a bearing seat. In order to reduce the radial play of the spindle, the bearing hole of the bearing seat is usually in clearance or interference fit with the outer side surface of the bearing, which results in that the bearing at the end of the spindle needs to apply a large axial force when being installed, which makes the installation and the disassembly of the spindle very inconvenient. And when the applied axial force is too large, the bearing and the main shaft can be damaged. Consequently, the inconvenient problem of installation dismantlement to the installation that traditional main shaft installation exists, the utility model discloses a fastener that is used for convenient fixed of fan flabellum main shaft.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a fastener that is used for convenient fixed of fan flabellum main shaft can realize having improved the installation dismantlement efficiency of main shaft greatly to the convenient high-efficient installation and the dismantlement of main shaft.
The utility model discloses a following technical scheme realizes:
a fastening device for conveniently fixing a main shaft of a fan blade comprises a main shaft, wherein a bearing is sleeved at the end part of the main shaft, a plurality of positioning lobes are arranged on the outer side of the bearing along the circumferential direction, and a fastening sleeve is sleeved on the outer side of each positioning lobe; the inner side surface of the positioning flap is matched with the outer side surface of the bearing, a first inclined surface is arranged on the outer side surface of the positioning flap, a centering taper hole is coaxially arranged on the fastening sleeve and the main shaft, and the centering taper hole is in sliding fit with the first inclined surface; be provided with the straining device that is on a parallel with the main shaft between location lamella and the adapter sleeve, be provided with the through-hole that supplies straining device to pass on the location lamella, straining device's one end and adapter sleeve are connected, straining device's the other end extends to the through-hole outside on the location lamella and keeps away from the terminal surface butt of adapter sleeve one end with the location lamella.
The positioning petals arranged along the circumferential direction form a mounting hole for mounting the bearing, and under the condition that the tensioning device does not axially tension the positioning petals, the conical hole surface of the centering conical hole in the fastening sleeve does not extrude the first inclined surface on the outer side of the positioning petals. A plurality of location lamella do not have the shrink this moment for the mounting hole diameter that a plurality of location lamella constitute is greater than the external diameter of bearing, makes inside the bearing can conveniently install the mounting hole. Then can be through straining device along the inside pulling location lamella of axial orientation centering taper hole for the first inclined plane in location lamella outside receives the extrusion of the taper hole face in centering taper hole, and then makes a plurality of location lamellas draw in along radial, and then presss from both sides the bearing tight, realizes the convenient location to the main shaft promptly, then can install the adapter sleeve to the inside of fan, in order to realize the convenient installation of main shaft. When the main shaft needs to be disassembled, the tensioning device is loosened towards the position far away from the centering taper hole, so that the positioning flap is separated from the centering taper hole, the taper hole surface of the centering taper hole does not extrude the first inclined surface on the outer side of the positioning flap, the mounting hole formed by the positioning flap is separated from the outer side surface of the bearing, and the bearing and the main shaft can be conveniently taken out and disassembled.
In order to realize better the utility model discloses, it is further, be provided with the ejector ring on the hole terminal surface of centering taper hole keep away from location lamella one side, be provided with the elastic component between one side of ejector ring and the hole terminal surface, the opposite side of ejector ring and the terminal surface butt of location lamella.
In order to realize better the utility model discloses, it is further, be provided with the installation annular on the hole terminal surface of location lamella one side is kept away from to the centering taper hole, evenly be provided with the elastic component along circumference in the installation annular, the one end of elastic component is connected with the tank bottom end face of installation annular, the other end and the one side of top throw-out collar of elastic component are connected.
In order to better realize the present invention, further, the elastic member includes a back pressure spring.
In order to realize better the utility model discloses, it is further, straining device includes tie bolt, the adapter sleeve is provided with the taut screw hole with tie bolt threaded connection, be provided with the through-hole that supplies tie bolt to pass on the location lamella, tie bolt's one end extends to the through-hole outside and is provided with taut step, the terminal surface butt of the one end of adapter sleeve is kept away from to the terminal surface of taut step and location lamella.
In order to realize better the utility model discloses, it is further, the one end that the adapter sleeve was kept away from to the location lamella is provided with bearing complex location step, the location terminal surface of location step and the terminal surface cooperation of bearing, the interior disc of location step and the lateral surface cooperation of bearing.
In order to realize better the utility model discloses, it is further, still include the spacing ring, the coaxial setting of spacing ring is at the opening part in the centering taper hole of adapter sleeve, the terminal surface that adapter sleeve one end was kept away from to the corresponding location lamella on the spacing ring is provided with spacing step.
In order to realize better the utility model discloses, it is further, be provided with the internal thread on the medial surface of the opening part of centering taper hole, be provided with the external screw thread with interior screw-thread fit threaded connection on the lateral surface of spacing ring.
In order to better realize the utility model, furthermore, the inclination angle of the first inclined plane and the centering taper hole is 20-30 degrees.
Compared with the prior art, the utility model, following advantage and beneficial effect have:
the bearing is sleeved at the end part of the main shaft, and the plurality of positioning flaps are arranged on the outer side of the bearing along the circumferential direction and are folded or expanded along the radial direction; the fastening sleeve is arranged on the outer side of the positioning flaps, the centering taper hole coaxial with the main shaft is arranged in the fastening sleeve, the first inclined plane in sliding fit with the centering taper hole is arranged on the outer side of the positioning flaps, and the positioning flaps are driven to move towards the inside of the centering taper hole along the axial direction through the tensioning device, so that the centering taper hole radially extrudes the first inclined plane, the positioning flaps are driven to be radially folded to clamp the outer side face of the bearing, and the bearing and the main shaft are conveniently positioned and installed; when the main shaft needs to be disassembled, the tensioning device is loosened, so that the positioning flap axially moves towards the outer side of the centering taper hole, the centering taper hole does not radially extrude the first inclined plane any more, the positioning flap further loosens the outer side face of the bearing, and the bearing and the main shaft are convenient to disassemble; through the arrangement, the main shaft is more convenient to mount and dismount, and meanwhile, the main shaft and the bearing are prevented from exerting large axial force, so that the main shaft and the bearing are effectively prevented from being deformed and damaged.
Drawings
FIG. 1 is a schematic view of a locating petal clamp bearing;
FIG. 2 is a schematic view of a positioning flap release bearing;
fig. 3 is a partially enlarged view of a portion a of fig. 1.
Wherein: 1-a main shaft; 2-a bearing; 3-positioning the flap; 4-fastening sleeve; 5-a tensioning device; 6-pushing the ring; 7-an elastic member; 8-a limit ring; 001-first bevel; 002-centering cone.
Detailed Description
Example 1:
the fastening device for conveniently fixing the main shaft of the fan blade comprises a main shaft 1, wherein a bearing 2 is sleeved at the end part of the main shaft 1, a plurality of positioning lobes 3 are arranged on the outer side of the bearing 2 along the circumferential direction, and a fastening sleeve 4 is sleeved on the outer side of each positioning lobe 3; the inner side surface of the positioning flap 3 is matched with the outer side surface of the bearing 2, a first inclined surface 001 is arranged on the outer side surface of the positioning flap 3, a centering taper hole 002 is coaxially arranged on the fastening sleeve 4 and the main shaft 1, and the centering taper hole 002 is in sliding fit with the first inclined surface 001; be provided with between location lamella 3 and the adapter sleeve 4 and be on a parallel with the overspeed device tensioner 5 of main shaft 1, be provided with the through-hole that supplies overspeed device tensioner 5 to pass on the location lamella 3, the one end and the adapter sleeve 4 of overspeed device tensioner 5 are connected, the other end of overspeed device tensioner 5 extends to the through-hole outside on the location lamella 3 and keeps away from the terminal surface butt of adapter sleeve 4 one end with location lamella 3.
The end of the main shaft 1 is matched with an inner hole of the bearing 2, two positioning flaps 3 are uniformly arranged on the outer side of the bearing 2 along the circumferential direction, and the positioning flaps 3 are of a half-ring structure. If N positioning petals 3 are circumferentially arranged, the positioning petals 3 are in an N-th integral ring structure. The axial length of centering taper hole 002 is greater than the axial length of location lamella 3 for first inclined plane 001 in the location lamella 3 outside has sufficient axial displacement distance to realize the sliding fit with the taper hole face.
As shown in fig. 1, the positioning flap 3 is pulled by the pulling device 5 in a direction approaching the inside of the centering taper 002, so that the first inclined surface 001 outside the positioning flap 3 slides along the taper surface of the centering taper 002. At the moment, the first inclined plane 001 is radially extruded by the taper hole surface, so that the two positioning lobes 3 are folded to clamp and position the bearing 2, and the main shaft 1 is conveniently mounted. Simultaneously, the positioning flap 3 which is folded in is coaxial with the main shaft 1 through the matching of the centering taper hole 002 and the first inclined plane 001, and the installation coaxiality of the main shaft 1 is further ensured.
Further, the inclination angle between the first inclined plane 001 and the centering taper hole 002 is 20-30 degrees.
Example 2:
the embodiment is further optimized on the basis of the embodiment 1, as shown in fig. 3, an ejector ring 6 is arranged on the end surface of the inner hole of the centering taper hole 002, which is far away from the positioning flap 3, an elastic member 7 is arranged between one side of the ejector ring 6 and the end surface of the inner hole, and the other side of the ejector ring 6 is abutted to the end surface of the positioning flap 3.
As shown in fig. 1, when the tensioning device 5 tensions the positioning flap 3 toward the inside of the centering taper hole 002, the end surface of the positioning flap 3 near the inside end of the centering taper hole 002 presses the ejector ring 6, and further the elastic member 7 is axially pressed by the ejector ring 6, and at this time, the elastic member 7 is compressed. The elastic element 7 is kept in a compressed state as a result of the tensioning means 5 continuously exerting a tensioning force on the positioning flap 3.
When it is desired to remove the spindle 1, the tensioning device 5 is released, as shown in fig. 2, so that the tensioning device 5 no longer tensions the positioning flap 3. At this time, the elastic element 7 is not pressed again and is restored to the original shape, and further the positioning flap 3 is pushed towards the outer side of the centering taper hole 002 along the axial direction, so that the auxiliary positioning flap 3 is rapidly released from the centering taper hole 002.
Further, be provided with the installation annular on the hole terminal surface that location lamella 3 one side was kept away from to centering taper hole 002, evenly be provided with elastic component 7 along circumference in the installation annular, the tank bottom terminal surface of one end and the installation annular of elastic component 7 is connected, the other end and the top of elastic component 7 are pushed and are pushed one side of ring 6 and be connected.
When the elastic piece 7 is compressed, the pushing ring 6 enters the inside of the mounting ring groove. When the elastic piece 7 rebounds, the ejection ring 6 is driven to extend out of the mounting ring groove and eject the positioning flap 3 towards the outer side of the centering taper hole 002, and the auxiliary positioning flap 3 is rapidly separated from the centering taper hole 002.
Further, the elastic member 7 includes a back pressure spring, and in the case that the axial feeding amount is equal to or less than 3mm, the back pressure spring may be replaced with an elastic sheet.
Other parts of this embodiment are the same as embodiment 1, and thus are not described again.
Example 3:
this embodiment is further optimized on the basis of the above embodiment 1 or 2, as shown in fig. 1, the tightening device 5 includes a tightening bolt, the fastening sleeve 4 is provided with a tightening threaded hole in threaded connection with the tightening bolt, the positioning flap 3 is provided with a through hole for the tightening bolt to pass through, one end of the tightening bolt extends to the outside of the through hole and is provided with a tightening step, and the end surface of the tightening step abuts against the end surface of the positioning flap 3 far away from one end of the fastening sleeve 4.
When the positioning flap 3 needs to be tensioned, the tensioning bolt is rotated, so that the tensioning step at the end part of the tensioning bolt pushes the end surface of the positioning flap 3 towards the direction close to the centering taper hole 002, and the positioning flap 3 is driven to move axially towards the inner part of the centering taper hole 002.
The rest of this embodiment is the same as embodiment 1 or 2, and therefore, the description thereof is omitted.
Example 4:
this embodiment is further optimized on the basis of any of the above embodiments 1-3, as shown in fig. 1, one end of the positioning flap 3 away from the fastening sleeve 4 is provided with a positioning step which is engaged with the bearing 2, a positioning end face of the positioning step is engaged with an end face of the bearing 2, and an inner circular face of the positioning step is engaged with an outer side face of the bearing 2.
Through setting up the location step, can carry out prepositioning to bearing 2 for 1 subsequent installation of main shaft is convenient and fast more.
The other parts of this embodiment are the same as those of embodiments 1 to 3, and thus are not described again.
Example 5:
the embodiment is further optimized on the basis of any one of the embodiments 1 to 4, and as shown in fig. 1 and fig. 2, the embodiment further includes a limiting ring 8, the limiting ring 8 is coaxially disposed at an opening of the centering taper hole 002 of the fastening sleeve 4, and a limiting step is disposed on an end surface of the limiting ring 8 corresponding to one end of the positioning flap 3 away from the fastening sleeve 4.
Through setting up spacing ring 8, and then restrict the axial displacement stroke of location lamella 3, avoid location lamella 3 to deviate from in centering taper hole 002 completely.
Furthermore, an internal thread is arranged on the inner side surface of the opening of the centering taper hole 002, and an external thread which is matched with the internal thread and is in threaded connection is arranged on the outer side surface of the limiting ring 8. When the positioning flap 3 moves towards the inner axial direction of the centering taper hole 002, the limiting ring 8 is synchronously rotated, so that the limiting ring 8 also moves towards the direction close to the centering taper hole 002, the axial stroke of the positioning flap 3 is further limited, and the positioning flap 3 is prevented from moving in the axial direction.
Other parts of this embodiment are the same as any of embodiments 1 to 4, and thus are not described again.
The above is only the preferred embodiment of the present invention, not to the limitation of the present invention in any form, all the technical matters of the present invention all fall into the protection scope of the present invention to any simple modification and equivalent change of the above embodiments.
Claims (9)
1. A fastening device for conveniently fixing a main shaft of a fan blade comprises a main shaft (1) and is characterized in that a bearing (2) is sleeved at the end part of the main shaft (1), a plurality of positioning petals (3) are arranged on the outer side of the bearing (2) along the circumferential direction, and a fastening sleeve (4) is sleeved on the outer side of each positioning petal (3); the inner side surface of the positioning flap (3) is matched with the outer side surface of the bearing (2), a first inclined surface (001) is arranged on the outer side surface of the positioning flap (3), a centering taper hole (002) is coaxially arranged on the fastening sleeve (4) and the main shaft (1), and the centering taper hole (002) is in sliding fit with the first inclined surface (001); be provided with overspeed device tensioner (5) that is on a parallel with main shaft (1) between location lamella (3) and adapter sleeve (4), be provided with the through-hole that supplies overspeed device tensioner (5) to pass on location lamella (3), the one end and the adapter sleeve (4) of overspeed device tensioner (5) are connected, the other end of overspeed device tensioner (5) extends to the through-hole outside on location lamella (3) and keeps away from the terminal surface butt of adapter sleeve (4) one end with location lamella (3).
2. The fastening device for conveniently fixing the main shaft of the fan blade of the fan according to claim 1, wherein an ejector ring (6) is arranged on the end surface of the inner hole of one side of the centering taper hole (002) far away from the positioning flap (3), an elastic member (7) is arranged between one side of the ejector ring (6) and the end surface of the inner hole, and the other side of the ejector ring (6) is abutted against the end surface of the positioning flap (3).
3. The fastening device for conveniently fixing the main shaft of the fan blade of the fan as claimed in claim 2, wherein the inner hole end surface of the centering taper hole (002) far away from the positioning flap (3) is provided with an installation ring groove, the installation ring groove is internally and uniformly provided with an elastic member (7) along the circumferential direction, one end of the elastic member (7) is connected with the groove bottom end surface of the installation ring groove, and the other end of the elastic member (7) is connected with one side of the top thrust ring (6).
4. A fastening device for the easy fastening of a fan blade spindle according to claim 3, characterized in that the elastic member (7) comprises a counter-pressure spring.
5. The fastening device for conveniently fixing the fan blade spindle according to any one of claims 1 to 4, wherein the fastening device (5) comprises a fastening bolt, the fastening sleeve (4) is provided with a fastening threaded hole in threaded connection with the fastening bolt, the positioning flap (3) is provided with a through hole for the fastening bolt to pass through, one end of the fastening bolt extends to the outside of the through hole and is provided with a fastening step, and the end surface of the fastening step is abutted against the end surface of one end of the positioning flap (3) far away from the fastening sleeve (4).
6. The fastening device for conveniently fixing the main shaft of the fan blade of the fan according to any one of claims 1 to 4, wherein one end of the positioning flap (3) far away from the fastening sleeve (4) is provided with a positioning step matched with the bearing (2), the positioning end face of the positioning step is matched with the end face of the bearing (2), and the inner circular face of the positioning step is matched with the outer side face of the bearing (2).
7. The fastening device for conveniently fixing the fan blade spindle of the fan as claimed in claim 6, further comprising a limiting ring (8), wherein the limiting ring (8) is coaxially disposed at an opening of the centering taper hole (002) of the fastening sleeve (4), and a limiting step is disposed on an end surface of the limiting ring (8) corresponding to one end of the positioning flap (3) far away from the fastening sleeve (4).
8. The fastening device for conveniently fixing the fan blade spindle according to claim 7, wherein an internal thread is arranged on an inner side surface of the opening of the centering taper hole (002), and an external thread which is matched with the internal thread and is in threaded connection with the internal thread is arranged on an outer side surface of the limiting ring (8).
9. The fastening device for conveniently fixing the main shaft of the fan blade of the fan as claimed in claim 8, wherein the first inclined surface (001) is inclined at an angle of 20 ° to 30 ° with respect to the centering taper hole (002).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220843290.6U CN217107575U (en) | 2022-04-13 | 2022-04-13 | Fastening device for conveniently fixing fan blade main shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220843290.6U CN217107575U (en) | 2022-04-13 | 2022-04-13 | Fastening device for conveniently fixing fan blade main shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217107575U true CN217107575U (en) | 2022-08-02 |
Family
ID=82581213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220843290.6U Active CN217107575U (en) | 2022-04-13 | 2022-04-13 | Fastening device for conveniently fixing fan blade main shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217107575U (en) |
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2022
- 2022-04-13 CN CN202220843290.6U patent/CN217107575U/en active Active
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