CN210265268U - Blade angle positioning device of axial flow fan - Google Patents
Blade angle positioning device of axial flow fan Download PDFInfo
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- CN210265268U CN210265268U CN201921135610.7U CN201921135610U CN210265268U CN 210265268 U CN210265268 U CN 210265268U CN 201921135610 U CN201921135610 U CN 201921135610U CN 210265268 U CN210265268 U CN 210265268U
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Abstract
The utility model relates to the technical field of axial flow fans, in particular to an axial flow fan blade angle positioning device, which comprises a blade and a hub, wherein the hub comprises an upper hub and a lower hub, the hub is provided with a positioning pin, the end surface of the blade handle of the blade is symmetrically provided with positioning hole groups by taking the axis of the blade handle as the center, the positioning hole groups comprise positioning holes with different angles, the upper edge of the upper hub is circumferentially arrayed with an upper blade handle mounting groove, the lower edge of the upper hub is circumferentially arrayed with an upper positioning pin limiting groove, the limiting groove is communicated with the upper blade handle mounting groove, the depth of the limiting groove on the positioning pin is not more than the radius of the positioning pin, the upper edge of the lower hub is circumferentially arrayed with a lower blade handle mounting groove, the upper edge of the lower hub is arrayed with a lower positioning pin limiting groove, the blade handle is arranged in the upper blade handle mounting groove and the lower blade handle mounting groove, the two symmetrical positioning holes on the end surface of the blade handle are positioned by, the utility model discloses simple structure, installation accuracy height, fast.
Description
Technical Field
The utility model relates to an axial fan technical field specifically indicates an axial fan blade angle positioning device.
Background
The current blade angle determination method generally has two types: the bevel protractor is confirmed and the angle is pulled certainly, the angle of adjustment of a blade of blade is required during the assembly impeller, workman man-hour cost is higher, the human factor influence is great, the operation is inconvenient, the blade operation in-process, the condition that the blade angle changes takes place easily, chinese patent CN202971299U has announced an impeller blade angle location structure, including blade and hub disk, be equipped with a plurality of blade pivot mounting grooves at the lateral margin of hub disk, be equipped with the recess on the inner wall of blade pivot mounting groove, its characterized in that: the blade comprises a blade body, a rotating shaft is arranged at the root of the blade body, an angle positioning groove is formed in the outer surface of the rotating shaft, a hub angle positioning groove correspondingly matched with the rotating shaft angle positioning groove is arranged in the groove, an angle wedge is embedded in a cavity formed between the rotating shaft angle positioning groove and the hub angle positioning groove, the shape of the angle wedge is consistent with that of the cavity, the blade rotating shaft angle positioning grooves are symmetrically distributed in an upper group and a lower group on the circumference and are a plurality of positioning grooves with semicircular sections, and the distribution structure of the hub angle positioning grooves is consistent with that of each group of rotating shaft angle positioning grooves; the angle difference between each group of angle positioning grooves is 5 degrees, the hub disc comprises a hub front disc and a hub rear disc, the hub front disc and the hub rear disc are of a huff structure, when the hub is assembled, the angle wedge is required to be firstly placed into the angle positioning groove of the hub front disc, then the blade rotating shaft is placed in a groove in a half blade rotating shaft mounting groove of the hub front disc, the blade is positioned at a carved positioning angle through rotating the blade, the blade rotating shaft angle positioning groove is tightly embedded with the angle wedge, accurate positioning is realized, then the hub rear disc is horizontally placed and placed into the angle wedge, the positioned blade and the hub front disc are reversely placed into the hub rear disc, and finally the hub front disc and the hub rear disc are fixed through a fastener, fastening is realized, and the defects of the patent are that: firstly, the outer surface of the rotating shaft in the patent is provided with a plurality of angle positioning grooves, the angle wedges are small in size and large in number, and when one blade is installed, the corresponding number of angle wedges are required to be placed into the angle positioning grooves one by one, if the blade falls, the angle wedges need to be taken again for installation, so that the operation is inconvenient, and time and labor are wasted; secondly, the vane is positioned at the carved positioning angle through the rotating vane, people know that the vane is heavy and the rotating vane is not easy, and the vane needs to be rotated to the carved positioning angle, so that repeated adjustment is needed, and time and labor are wasted; and thirdly, only one blade is arranged on one hub, a plurality of angles are required to be installed on each hub, the blades are rotated, the angles are debugged, and the angle wedges are installed finely and complexly.
Disclosure of Invention
The utility model aims at solving the prior art not enough, provide a simple structure, be convenient for operation, installation adjust the precision high, workman man-hour is short, efficient axial fan blade angle positioner.
In order to achieve the above object, the utility model adopts the following technical scheme:
the utility model provides an axial fan blade angle positioner, includes blade and wheel hub, wheel hub includes wheel hub and lower wheel hub, its characterized in that: the positioning holes are symmetrically arranged on the end face of the blade shank by taking the axis of the blade shank as the center, the positioning holes comprise positioning holes with different angles, an upper blade shank mounting groove is circumferentially arrayed on the outer edge of the upper hub, an upper positioning pin limiting groove is circumferentially arrayed on the lower end face of the upper hub, the upper positioning pin limiting groove is communicated with the upper blade shank mounting groove, the depth of the upper limiting groove of the positioning pin is not more than the radius of the positioning pin, a lower blade shank mounting groove is circumferentially arrayed on the outer edge of the lower hub, a lower positioning pin limiting groove is circumferentially arrayed on the upper end face of the lower hub, the lower positioning pin limiting groove is communicated with the lower blade shank mounting groove, the depth of the lower positioning pin limiting groove is not more than the radius of the positioning pin, the lower blade shank mounting groove and the upper blade shank mounting groove are oppositely arranged, the lower positioning pin limiting groove is oppositely arranged with the upper positioning pin limiting groove, the blade shank is arranged in the, the end face of the blade handle is fixedly provided with a positioning pin through two symmetrical positioning holes, the positioning pin is abutted against and positioned with a limiting groove on the positioning pin and a limiting groove on the positioning pin, the upper hub and the lower hub are locked by a fastener to fixedly connect the blade handle and the hub, so as to be beneficial to symmetrically arranging positioning hole groups on the end surface of the blade handle according to the common installation angle of the blade, wherein the positioning hole groups comprise positioning holes with different angles, the installation angle of the blade is adjusted and determined by arranging the positioning pins in the two positioning holes with different symmetrical angles, and after the installation angle of one blade is determined, the mounting positions of the positioning pins on the blade handles of other blades can also be determined, then the upper hub and the lower hub are fixedly connected through a fastener, therefore, the blade handle is locked in the blade handle upper mounting groove and the blade handle lower mounting groove of the hub, the limiting groove on the positioning pin and the limiting positioning pin in the limiting groove on the positioning pin prevent the blade handle from rotating, and the rapid installation of the blade is realized.
The locating hole group includes first row locating hole and second row locating hole at least, first row locating hole and second row locating hole are set up by petiole center to petiole edge distribution, first row locating hole includes a locating hole at least, the second row locating hole includes two locating holes at least, the center that two locating holes were located same diameter on the second row locating hole is on the circular arc line, first row locating hole is located between two locating holes in the second row locating hole to do benefit to and set up the locating hole group through in petiole terminal surface symmetry, the locating hole group includes two row at least locating holes again respectively, the angle of adjacent locating hole is different, so the installation angle of blade is adjusted in two locating holes of different angle symmetries in the locating hole group to the accessible with the locating pin setting.
The utility model discloses owing to adopt above-mentioned structure, have simple structure, be convenient for operation, installation adjust advantages such as precision height, workman man-hour are short, efficient.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of the blade of the present invention.
Fig. 3 is a schematic view of the installation groove under the petiole of the lower hub for installing the petiole of the vane in the present invention.
Detailed Description
The following describes in further detail embodiments of the present invention with reference to the accompanying drawings.
The utility model provides an axial fan blade angle positioner, includes blade 1 and wheel hub 2, wheel hub includes wheel hub and lower wheel hub, its characterized in that: the blade is provided with a positioning pin 3, a positioning hole group 5 is symmetrically arranged on the end surface of a blade handle 4 of the blade 1 by taking the axis of the blade handle as the center, the positioning hole group 5 comprises positioning holes 6 with different angles, an upper blade handle mounting groove is circumferentially arrayed on the outer edge of an upper hub, an upper positioning pin limiting groove is circumferentially arrayed on the lower end surface of the upper hub, the upper positioning pin limiting groove is communicated with the upper blade handle mounting groove, the depth of the upper limiting groove is not more than the radius of the positioning pin 3, a lower blade handle mounting groove is circumferentially arrayed on the outer edge of a lower hub, a lower positioning pin limiting groove 9 is circumferentially arrayed on the upper end surface of the lower hub, the lower positioning pin limiting groove 9 is communicated with the lower blade handle mounting groove, the depth of the lower positioning pin limiting groove 9 is not more than the radius of the positioning pin, the lower blade handle mounting groove and the upper blade handle mounting groove are oppositely arranged, the, the blade handle 4 is arranged in the blade handle upper mounting groove and the blade handle lower mounting groove, the end surface of the blade handle 4 is fixedly provided with a positioning pin which is abutted against a positioning pin upper limiting groove and a positioning pin lower limiting groove through two symmetrical positioning holes, the upper hub and the lower hub are locked through a fastener to fixedly connect the blade handle 4 and the hub 2 so as to be beneficial to symmetrically arranging positioning hole groups on the end surface of the blade handle according to the common mounting angle of the blade, the positioning hole groups comprise positioning holes with different angles, the mounting angles of the blade are adjusted and determined by arranging the positioning pins in the two symmetrical positioning holes with different angles, after the mounting angle of one blade is determined, the mounting positions of the positioning pins on the blade handles of the other blades can be determined, then the upper hub and the lower hub are fixedly connected through the fastener, so that the blade handle is locked in the blade handle upper mounting groove and the blade handle lower mounting groove of the hub, the positioning pin upper limiting groove and the positioning, the rotation of the blade handle is prevented, and the rapid installation of the blade is realized.
Positioning hole group 5 includes first row locating hole 7 and second row locating hole 8 at least, first row locating hole 7 and second row locating hole 8 are set up to 4 edge distributions of petiole by the petiole 4 center, first row locating hole 7 includes a locating hole at least, second row locating hole 8 includes two locating holes at least, the center that two locating holes were gone up to second row locating hole 8 is located the circular arc line of same diameter, first row locating hole 7 is located between two locating holes of second row locating hole 8 to do benefit to and set up positioning hole group through in petiole terminal surface symmetry, positioning hole group includes two row at least locating holes again respectively, and the angle of adjacent locating hole is different, so the installation angle of blade is adjusted in two locating holes of different angle symmetries in positioning hole group to the accessible with the locating pin setting.
As shown in the attached figures 1 and 2, before the blade is assembled, the lower end of the blade handle of the blade is embedded into the lower blade handle mounting groove of the lower hub, the lower limiting groove of the positioning pin is arranged at the upper end of the inner side of the lower blade handle mounting groove, the lower limiting groove of the positioning pin and the lower blade handle mounting groove form a step-shaped mounting groove, the upper blade handle mounting groove and the lower blade handle mounting groove have the same structure, the two installation grooves are oppositely and rightly buckled with the blade handle and the positioning pin, the blade handle is firstly installed into the lower blade handle mounting groove, the blade is rotated to adjust the installation angle of the blade, after the installation angle of the blade is proper, the positioning pins are installed into the two symmetrical positioning holes on the end surface of the blade handle, the lower end of the side surface of the positioning pin is abutted against the middle of the lower limiting groove of the positioning pin, the position of the blade handle is fixed, the positions, then the upper hub is buckled on the lower hub, so that the upper end and the lower end of the blade handle are fixed by the upper mounting groove of the blade handle and the lower mounting groove of the blade handle, the upper end of the side surface of the positioning pin is pressed in the middle of the upper limiting groove of the positioning pin, the lower end of the side surface of the positioning pin is abutted by the middle of the lower limiting groove of the positioning pin, the positioning pin is limited, then the upper hub and the lower hub are fixedly connected by the fastener, the upper hub and the lower hub are fixed by the fastener, the redundancy is avoided, the blade handle is fixed in the hub by the mounting groove of the blade handle, and the position of the blade handle is limited by the positioning pin, so that the angle of the blade can be ensured to be unchanged in the operation process, compared with the prior art, the utility model, by arranging the positioning holes with different angles on the end surface of the blade handle, the mounting angles of the blade can be corresponding to, the installation is quick, and the part is few moreover, need not adjust repeatedly, and labour saving and time saving has practiced thrift intensity of labour greatly for the installation rate of blade.
The utility model discloses owing to adopt above-mentioned structure, have simple structure, be convenient for operation, installation adjust advantages such as precision height, workman man-hour are short, efficient.
Claims (2)
1. The utility model provides an axial fan blade angle positioner, includes blade and wheel hub, wheel hub includes wheel hub and lower wheel hub, its characterized in that: the positioning holes are symmetrically arranged on the end face of the blade shank by taking the axis of the blade shank as the center, the positioning holes comprise positioning holes with different angles, an upper blade shank mounting groove is circumferentially arrayed on the outer edge of the upper hub, an upper positioning pin limiting groove is circumferentially arrayed on the lower end face of the upper hub, the upper positioning pin limiting groove is communicated with the upper blade shank mounting groove, the depth of the upper limiting groove of the positioning pin is not more than the radius of the positioning pin, a lower blade shank mounting groove is circumferentially arrayed on the outer edge of the lower hub, a lower positioning pin limiting groove is circumferentially arrayed on the upper end face of the lower hub, the lower positioning pin limiting groove is communicated with the lower blade shank mounting groove, the depth of the lower positioning pin limiting groove is not more than the radius of the positioning pin, the lower blade shank mounting groove and the upper blade shank mounting groove are oppositely arranged, the lower positioning pin limiting groove is oppositely arranged with the upper positioning pin limiting groove, the blade shank is arranged in the, the end face of the blade handle is fixedly provided with a positioning pin through two symmetrical positioning holes, the positioning pin abuts against and is positioned with a limiting groove on the positioning pin and a limiting groove on the positioning pin, and the upper hub and the lower hub are locked through a fastener to fixedly connect the blade handle and the hub.
2. The axial fan blade angle positioning device of claim 1, wherein: the positioning hole group at least comprises a first row of positioning holes and a second row of positioning holes, the first row of positioning holes and the second row of positioning holes are distributed from the center of the blade handle to the edge of the blade handle, the first row of positioning holes at least comprises one positioning hole, the second row of positioning holes at least comprises two positioning holes, the centers of the two positioning holes on the second row of positioning holes are positioned on an arc line with the same diameter, and the first row of positioning holes is positioned between the two positioning holes of the second row of positioning holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921135610.7U CN210265268U (en) | 2019-07-19 | 2019-07-19 | Blade angle positioning device of axial flow fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921135610.7U CN210265268U (en) | 2019-07-19 | 2019-07-19 | Blade angle positioning device of axial flow fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210265268U true CN210265268U (en) | 2020-04-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921135610.7U Active CN210265268U (en) | 2019-07-19 | 2019-07-19 | Blade angle positioning device of axial flow fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210265268U (en) |
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2019
- 2019-07-19 CN CN201921135610.7U patent/CN210265268U/en active Active
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