CN203335451U - Vertical type excess speed testing device for axial flow fan - Google Patents
Vertical type excess speed testing device for axial flow fan Download PDFInfo
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- CN203335451U CN203335451U CN2013204393890U CN201320439389U CN203335451U CN 203335451 U CN203335451 U CN 203335451U CN 2013204393890 U CN2013204393890 U CN 2013204393890U CN 201320439389 U CN201320439389 U CN 201320439389U CN 203335451 U CN203335451 U CN 203335451U
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- vertical
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- testing apparatus
- flow blower
- cylindrical shell
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Abstract
The utility model discloses a vertical type excess speed testing device of an axial flow fan. According to an existing excess speed testing device, a main shaft is transversely arranged, the structure is not stable and reliable, and the shake phenomenon appearing in a test is serious. The vertical type excess speed testing device of the axial flow fan is characterized in that a vertical main shaft is installed in the center position of a cylinder body, a lower bearing seat is arranged at the bottom of an inner cavity of the cylinder body, the vertical main shaft is sleeved with the lower bearing seat, the upper end surface of the vertical main shaft is connected with a mandrel through a coupler, the mandrel is used for installation of an impeller hub, the lower end of the vertical main shaft is arranged outside the cylinder body and connected with a variable-frequency motor through a belt transmission mechanism. The vertical type excess speed testing device of the axial flow fan is reliable in overall structure, convenient to assemble and disassemble, capable of meeting the requirement that excess speed adjustment is controlled at any time, and enabling speed adjustment to be convenient, and safe and reliable in the test.
Description
Technical field
The utility model relates to the testing apparatus of ventilation equipment, specifically a kind of axial-flow blower vertical overspeed testing apparatus.
Background technique
The subway tunnel blower fan market demand is very large at present, and quality safety index content is very high.Draught fan impeller is the critical piece of blower fan, and impeller is formed by wheel hub and blade assembling.The material of wheel hub, blade is the aluminum casting profile material, is the low-pressure die casting part, and internal soundness exists suspicious, and whether the fatigue strength that usually adopts overspeed testing apparatus to test totally to return the sample foundry goods meets actual demand.The main shaft of current overspeed testing apparatus is cross setting, and structure is reliable and stable not, and during test, seismism is more serious; The contrast of regulating speed of overspeed testing apparatus bothers in addition, inconvenient operation.
Summary of the invention
Technical problem to be solved in the utility model is to overcome the defect that above-mentioned prior art problem exists, and a kind of reliable in structure is provided, and uses safety, axial-flow blower vertical overspeed testing apparatus easily.
For this reason, the utility model adopts following technological scheme: a kind of axial-flow blower vertical overspeed testing apparatus, comprise cylindrical shell, it is characterized in that, a vertical spindle is equipped with in the center of described cylindrical shell, the bottom of cylinder lumen is provided with a step be enclosed within on vertical spindle, and the upper-end surface of described vertical spindle connects one for the mandrel of impeller hub is installed by a coupling, and the lower end of vertical spindle is placed in outside cylindrical shell and by a tape handler and is connected with an adjustable frequency motor.
Mandrel coordinates various types of wheel hub, then by coupling, transmits driving torque power to mandrel, and draught fan impeller is carried out to the overspeed test project.Main shaft of the present utility model adopts vertical, makes the overall structure of device reliable, easy accessibility; Adjustable frequency motor provides the power of overspeed testing apparatus.
Improve and supplement as the further of technique scheme, the utility model is taked following technical measures:
Described vertical spindle overcoat has an inner core, the upper bearing bracket that the upper end of this inner core and is enclosed within on vertical spindle is connected, the lower end of inner core is connected with described step, is respectively equipped with the upper and lower deep groove ball bearing be arranged on vertical spindle on upper and lower bearing support.Ensure that by upper and lower deep groove ball bearing vertical spindle can bearing radial force and axial force in the overspeed test process.
The shaft shoulder place installed thrust ball bearing of described vertical spindle, overcome carrying from weight with when hypervelocity axial Driving force whole.
Described tape handler is comprised of motor wheel, impeller of blower and the damping belt for being connected the above two, and described motor wheel is arranged on the output shaft of adjustable frequency motor, and impeller of blower is arranged on the lower end of vertical spindle.By tape handler by the transmission of power of variable-frequency motor to vertical spindle, thereby pass to mandrel, the impeller wheel hub rotates, and makes impeller under overspeed condition, to complete test.
Have the flat key groove on described mandrel, mandrel is connected with impeller hub with lock bolt by flat key, guarantees the Safety performance of impeller when hypervelocity work twists and facilitates the dismounting of mandrel.
The upper-end surface of described vertical spindle adopts bolt to be fixedly connected with the lower end surface of mandrel, guarantees the reliability that both connect.
Described adjustable frequency motor is connected with a digital control panel, controls at any time hypervelocity by digital device and adjusts requirement, easy-to-operat.
A ventilation guard is equipped with at the top of described cylindrical shell, guarantees that impeller is in the meet accident Security of accident of hypervelocity moment.
Described cylindrical shell is provided with the maintenance moving door, provides dismounting test products and mandrel to install and changes.
A plurality of supporting foots are equipped with in the bottom of described cylindrical shell, for supporting whole cylindrical shell.
The utlity model has following beneficial effect: overall structure is reliable, easy accessibility; Can meet and control at any time hypervelocity adjustment requirement, speed governing is convenient; Safe and reliable during test.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the sectional view of the utility model vertical spindle and mandrel joint.
Fig. 3 is the sectional view of the utility model vertical spindle and step joint.
Embodiment
Below in conjunction with specification drawings and specific embodiments, model utility is described further.
Axial-flow blower vertical overspeed testing apparatus as shown in the figure, vertical spindle 16 is equipped with in the center of cylindrical shell 7, the bottom of cylindrical shell 7 inner chambers is provided with the step 11 be enclosed within on vertical spindle, the upper-end surface of vertical spindle 16 connects for the mandrel 21 of impeller hub is installed by coupling 25, the lower end of vertical spindle 16 is placed in outside cylindrical shell 7 and is connected with adjustable frequency motor 4 by tape handler, and adjustable frequency motor 4 is connected with digital control panel.Ventilation guard 29 is equipped with at the top of cylindrical shell 7, and cylindrical shell 7 is provided with the maintenance moving door, and a plurality of supporting foots 6 are equipped with in the bottom of cylindrical shell 7.
Described tape handler is comprised of motor wheel 1, impeller of blower 8 and the damping belt 5 for being connected the above two, and described motor wheel 1 is arranged on the output shaft of adjustable frequency motor 4, and impeller of blower 8 is arranged on the lower end of vertical spindle 16.
Described vertical spindle 16 overcoats have inner core 15, the upper end of this inner core 15 is connected with the upper bearing bracket 28 on being enclosed within vertical spindle, the lower end of inner core 15 is connected with described step 11, is respectively equipped with the upper and lower deep groove ball bearing 18,13 be arranged on vertical spindle on upper and lower bearing support 28,11.The shaft shoulder place installed thrust ball bearing 14 of vertical spindle 16.
Have the flat key groove on described mandrel 21, mandrel 21 is connected with impeller hub 19 with lock bolt 22 by flat key 24.The upper-end surface of vertical spindle 16 adopts bolt 26 to be fixedly connected with the lower end surface of mandrel 21.
Overspeed test step of the present utility model is as follows:
At first check the position of halving of the rear assembling of wheel hub processing blade, aperture and standard pitch circle error, must meet drawing regulation and precision.
Before the blade processing assembling, at first by every blade meter weight, encode respectively, the blade of identical weight is contained in wheel hub symmetrical position aperture, and fixes with clamp-screw.
After impeller has two parts by the operation assembling, must the positive dynamic balancing operation of core meet the weightless range of balance value of permission.
The vertical overspeed testing apparatus, during the test impeller performance, must assembling send out same type mandrel and a stifle, then loads onto safe valve bonnet, can implement.
Open the variable-frequency motor control knob, check sense of rotation, then carry out frequency control of motor speed, from low speed speedup progressively, check digital display screen and the switching of various electric meter numerical value, the sustainable rise required rotating speed that exceeds the speed limit.
Whether, after overspeed test, dismounting impeller, more further x-ray inspection, check the impeller after overspeed test, have the crackle after distortion to occur, and various factors is analyzed, and evaluation and product safety performance are approved.
Claims (10)
1. an axial-flow blower vertical overspeed testing apparatus, comprise cylindrical shell (7), it is characterized in that, a vertical spindle (16) is equipped with in the center of described cylindrical shell (7), the bottom of cylindrical shell (7) inner chamber is provided with a step (11) be enclosed within on vertical spindle, the upper-end surface of described vertical spindle (16) connects a mandrel (21) for impeller hub is installed by a coupling (25), and it is outer and be connected with an adjustable frequency motor (4) by a tape handler that the lower end of vertical spindle (16) is placed in cylindrical shell (7).
2. axial-flow blower vertical overspeed testing apparatus according to claim 1, it is characterized in that, described vertical spindle (16) overcoat has an inner core (15), the upper bearing bracket (28) that the upper end and of this inner core (15) is enclosed within on vertical spindle is connected, the lower end of inner core (15) is connected with described step (11), is respectively equipped with the upper and lower deep groove ball bearing (18,13) be arranged on vertical spindle on upper and lower bearing support (28,11).
3. axial-flow blower vertical overspeed testing apparatus according to claim 1 and 2, is characterized in that, the shaft shoulder place installed thrust ball bearing (14) of described vertical spindle (16).
4. axial-flow blower vertical overspeed testing apparatus according to claim 1 and 2, it is characterized in that, described tape handler is comprised of motor wheel (1), impeller of blower (8) and the damping belt (5) for being connected the above two, described motor wheel (1) is arranged on the output shaft of adjustable frequency motor (4), and impeller of blower (8) is arranged on the lower end of vertical spindle (16).
5. axial-flow blower vertical overspeed testing apparatus according to claim 1 and 2, it is characterized in that, described mandrel has the flat key groove on (21), and mandrel (21) is connected with impeller hub (19) with lock bolt (22) by flat key (24).
6. axial-flow blower vertical overspeed testing apparatus according to claim 1 and 2, is characterized in that, the upper-end surface of described vertical spindle (16) adopts bolt (26) to be fixedly connected with the lower end surface of mandrel (21).
7. axial-flow blower vertical overspeed testing apparatus according to claim 1 and 2, is characterized in that, described adjustable frequency motor (4) is connected with a digital control panel.
8. axial-flow blower vertical overspeed testing apparatus according to claim 1 and 2, is characterized in that, a ventilation guard (29) is equipped with at the top of described cylindrical shell (7).
9. axial-flow blower vertical overspeed testing apparatus according to claim 1 and 2, is characterized in that, described cylindrical shell (7) is provided with the maintenance moving door.
10. axial-flow blower vertical overspeed testing apparatus according to claim 1 and 2, is characterized in that, a plurality of supporting foots (6) are equipped with in the bottom of described cylindrical shell (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204393890U CN203335451U (en) | 2013-07-19 | 2013-07-19 | Vertical type excess speed testing device for axial flow fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204393890U CN203335451U (en) | 2013-07-19 | 2013-07-19 | Vertical type excess speed testing device for axial flow fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203335451U true CN203335451U (en) | 2013-12-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013204393890U Expired - Fee Related CN203335451U (en) | 2013-07-19 | 2013-07-19 | Vertical type excess speed testing device for axial flow fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203335451U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107831005A (en) * | 2017-12-04 | 2018-03-23 | 南京磁谷科技有限公司 | A kind of magnetic suspension draught fan impeller overspeed test bench cover plate dolly |
| CN114323607A (en) * | 2021-12-17 | 2022-04-12 | 山东豪迈机械科技股份有限公司 | Overspeed test device and method for aluminum alloy closed impeller |
-
2013
- 2013-07-19 CN CN2013204393890U patent/CN203335451U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107831005A (en) * | 2017-12-04 | 2018-03-23 | 南京磁谷科技有限公司 | A kind of magnetic suspension draught fan impeller overspeed test bench cover plate dolly |
| CN114323607A (en) * | 2021-12-17 | 2022-04-12 | 山东豪迈机械科技股份有限公司 | Overspeed test device and method for aluminum alloy closed impeller |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131211 Termination date: 20160719 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |