CN113714969A - Tool for dismounting TLT movable blade adjustable axial flow fan impeller petiole nut - Google Patents
Tool for dismounting TLT movable blade adjustable axial flow fan impeller petiole nut Download PDFInfo
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- CN113714969A CN113714969A CN202111136719.4A CN202111136719A CN113714969A CN 113714969 A CN113714969 A CN 113714969A CN 202111136719 A CN202111136719 A CN 202111136719A CN 113714969 A CN113714969 A CN 113714969A
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- 230000007246 mechanism Effects 0.000 claims description 9
- 230000000694 effects Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 230000009471 action Effects 0.000 description 18
- 230000006378 damage Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
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- 238000010248 power generation Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
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- Engineering & Computer Science (AREA)
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides a tool for dismounting an impeller stem nut of an TLT movable blade adjustable axial flow fan, which is used for dismounting the impeller stem nut which is meshed with a stem and has a hollow cylinder-like structure, and a circle of holes are uniformly formed in the excircle of the impeller stem nut. Compared with the prior art, the impeller petiole nut can be conveniently and efficiently disassembled and assembled, and the danger in the disassembling and assembling process is reduced.
Description
Technical Field
The invention relates to the technical field of fan impeller petiole maintenance, in particular to a tool for disassembling and assembling a TLT movable blade adjustable axial flow fan impeller petiole nut.
Background
In recent years, large-scale power generation group companies develop rapidly, and newly-built units not only have higher building speed, but also gradually replace old units with large-capacity high-parameter green coal power. Under the conditions of high capacity and large output of the unit, most axial flow fans are adopted as large-scale fan equipment mainly used by coal-fired power plants. One of the most important models is the TLT movable blade adjustable axial flow fan manufactured by german original factory or Shanghai blower factory.
Referring to fig. 3, the TLT movable blade adjustable axial flow fan impeller petiole nut is in a hollow cylinder-like structure, and is internally provided with threads meshed with the petiole. The existing maintenance mode adopts a hook-shaped spanner to loosen or lock a nut. Because the difference of high and low positions exists in the use process of the configuration wrench, the configuration wrench is easy to slip. In this situation, injury to personnel and damage to equipment are easily caused. Meanwhile, as the internal threads of the petiole nut are fine threads, the nut can be loosened by mechanical labor required to be reciprocated for many times, and great waste of labor cost is caused.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a tool for disassembling and assembling the blade handle nut of the TLT movable blade adjustable axial flow fan, which can improve the disassembling and assembling efficiency and reduce the danger in the disassembling and assembling process.
The purpose of the invention can be realized by the following technical scheme:
the invention provides a tool for dismounting an impeller stem nut of an TLT movable blade adjustable axial flow fan, which is used for dismounting the impeller stem nut which is meshed with a stem and has a hollow cylinder-like structure, and a circle of holes are uniformly formed in the excircle of the impeller stem nut.
Preferably, the telescopic rod mechanism comprises a first telescopic rod, a second telescopic rod and a third telescopic rod which are sequentially arranged on the bottom plate from bottom to top, and the action disc is sleeved on the second telescopic rod.
Preferably, the action disc is a circular disc with a through hole at the center for being sleeved in the second telescopic rod, and a plurality of bulges for inserting the hole and rotating, dismounting and mounting the impeller petiole nut are uniformly arranged on the excircle of the action disc.
Preferably, the through holes comprise a circular through hole and a square through hole, the square through hole is located at the edge of the circular through hole, the action disk is sleeved into the second telescopic rod through the circular through hole, and the action disk is fixed on the second telescopic rod through the square through hole by inserting a key pin.
Preferably, the radius of the reaction disc is the same as the radius of the impeller shank nut.
Preferably, the number of the protrusions is the same as the number of the holes in one circle on the excircle of the impeller petiole nut.
Preferably, the inner diameter of the first telescopic rod is the same as the outer diameter of the second telescopic rod, and the inner diameter of the second telescopic rod is the same as the outer diameter of the third telescopic rod.
Preferably, the top of the first telescopic rod and the bottom of the second telescopic rod are provided with transverse screw holes and connected through a first inner hexagonal jackscrew; the top of the second telescopic rod and the bottom of the third telescopic rod are provided with transverse screw holes which are connected through a second inner hexagonal jackscrew.
Preferably, the upper surface of the bottom plate is provided with a groove, and the groove is provided with a bearing which is used for connecting the first telescopic rod and supporting the rotation of the telescopic rod mechanism.
Preferably, a hexagonal nut for rotating the telescopic rod mechanism is welded at the top end of the third telescopic rod.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention adopts the three-section type telescopic rod, and the height of the action disc can be conveniently adjusted according to the height of the blade handle nut of the impeller; and each section can be detached independently for replacement, so that the problem of poor flexibility of the integrated device is avoided.
2. The invention connects the first telescopic rod and the bottom plate through the bearing, the hexagonal nut is arranged at the top end of the third telescopic rod, and the blade handle nut of the impeller is rotationally disassembled and assembled by rotating the whole telescopic rod to drive the action disk sleeved on the second telescopic rod. The problem that the configured wrench slips due to the difference of high and low positions in the using process of the wrench in the prior art is solved.
3. According to the invention, the outer circle is provided with the plurality of cylindrical bulges, the number of the bulges is the same as that of the holes, the bulges are inserted into the holes and the telescopic rods are rotated, so that the bulges drive the impeller petiole nuts to rotate, and further the impeller petiole nuts are loosened and fixed for dismounting, the dismounting efficiency is high, and the labor cost can be reduced.
Drawings
Fig. 1 is a schematic structural diagram of a tool for dismounting a stem nut of an impeller of a TLT movable blade adjustable axial flow fan according to the present embodiment;
FIG. 2 is a schematic view of the active plate of FIG. 1;
FIG. 3 is a schematic structural view of a TLT movable blade adjustable axial flow fan impeller petiole nut;
marked 1, telescopic link in the figure, 11, first telescopic link, 12, second telescopic link, 13, third telescopic link, 2, effect dish, 31, first hexagon socket head cap screw, 32, second hexagon socket head cap screw, 4, hexagon nut, 5, bottom plate, 6, perforation, 7, impeller petiole nut, 8, hole and 9, petiole.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
The structure diagram of the TLT movable blade adjustable axial flow fan impeller petiole nut is shown in 3, a plurality of impeller petiole nuts 7 are arranged on the TLT movable blade adjustable axial flow fan, each impeller petiole nut 7 is of a hollow cylinder-like structure, threads are arranged in the impeller petiole nuts 7 and meshed with a petiole 9, and a circle of holes 8 are uniformly formed in the outer circle of each impeller petiole nut 7.
Referring to fig. 1, the present embodiment provides a tool for disassembling and assembling a TLT bucket adjustable axial flow fan impeller petiole nut, comprising: telescopic link 1, first telescopic link 11, second telescopic link 12, third telescopic link 13, effect dish 2, first hexagon socket head cap screw 31, second hexagon socket head cap screw 32, hexagon nut 4, bottom plate 5 and perforation 6.
The telescopic rod 1 comprises a first telescopic rod 11, a second telescopic rod 12 and a third telescopic rod 13 which are sequentially connected from bottom to top, the inner diameter of the first telescopic rod 11 is equal to the outer diameter of the second telescopic rod 12, and the inner diameter of the second telescopic rod 12 is equal to the outer diameter of the third telescopic rod 13. The top of the first telescopic rod 11 and the bottom of the second telescopic rod 12 are provided with transverse screw holes and are connected through a first inner hexagonal jackscrew 31; the top of the second telescopic rod 12 and the bottom of the third telescopic rod 13 are provided with transverse screw holes and connected through a second inner hexagonal jackscrew 32. Bottom plate 5 is connected through the bearing in the bottom of first telescopic link 11, and bottom plate 5 upper surface is equipped with the recess that is used for placing the bearing, and the pulley that has brake function is installed to the bottom of bottom plate 5. The second telescopic rod 12 is sleeved with the action disc 2 through a key pin, and the top of the third telescopic rod 13 is welded with a hexagonal nut 4.
As an alternative embodiment, the pulley with the braking function can adopt a double-bearing mute universal wheel in the prior art.
Referring to fig. 2, the action disc 2 is a circular disc with a plurality of cylindrical protrusions uniformly arranged on the outer circle, the radius of the action disc 2 is equal to that of the impeller petiole nut 7, and the distribution number of the protrusions is consistent with that of the holes 8 on one circle of the impeller petiole nut. The center of the action disc 2 is provided with a through hole 6, the through hole 6 comprises a circular through hole and a square through hole positioned at the edge of the circular through hole, the action disc 2 is sleeved in the second telescopic rod 12 through the circular through hole, a key pin is inserted through the square through hole, the action disc 2 is fixed on the second telescopic rod 12, and the inner diameter of the circular through hole is consistent with the outer diameter of the second telescopic rod 12.
The utility model provides a tool that is used for dismouting TLT movable vane adjustable axial fan impeller petiole nut, its theory of operation as follows:
s1: selecting a proper action disc 2 according to the radius of the impeller petiole nut 7 and the number of the holes 8 on the impeller petiole nut, and assembling the action disc into a second telescopic rod 12;
s2: assembling the bottom of the first telescopic rod 11 into the bottom plate 5 in a matching way with a bearing;
s3: inserting the third telescopic rod 13 into the second telescopic rod 12, inserting the second telescopic rod 12 into the first telescopic rod 11, aligning the transverse screw holes at the bottom of the third telescopic rod 13 and the top of the second telescopic rod 12, fixing by using a second inner hexagonal jackscrew 32, aligning the transverse screw holes at the bottom of the second telescopic rod 12 and the top of the first telescopic rod 11, and fixing by using a first inner hexagonal jackscrew 31;
s4: moving the invention to the side of an impeller, adjusting the height of each telescopic rod to enable the height of an action disc 2 to be equal to that of an impeller petiole nut 7, and inserting the bulge of the action disc 2 into a hole 8 of the impeller petiole nut;
s5: a pulley brake which fastens the first inner hexagonal jackscrew 31 and the second inner hexagonal jackscrew 32 and locks the bottom plate 5;
s6: the hexagonal nut 4 at the top end of the third telescopic link 13 is screwed by an electric wrench, so that the telescopic link 1 rotates along with the bearing to drive the protrusion on the action disc 2 to rotate the impeller petiole nut 7 for disassembly.
As an alternative embodiment, when the present invention is used to install the lobe nut 7, the direction of the protruding turning lobe nut 7 is opposite to the direction of the protruding turning lobe nut 7 when it is removed.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (10)
1. The utility model provides an instrument that is used for adjustable axial fan impeller petiole nut of dismouting TLT movable vane for dismouting and petiole (9) meshing be hollow cylinder structure and the excircle evenly are equipped with impeller petiole nut (7) of round hole (8), its characterized in that, include bottom plate (5), set up rotatable telescopic link mechanism on bottom plate (5) to and the cover is established on telescopic link mechanism and is used for dismouting impeller petiole nut (7) along with telescopic link mechanism is rotatory effect dish (2).
2. The tool for dismounting and mounting the impeller petiole nut of the TLT movable blade adjustable axial flow fan according to claim 1, wherein the telescopic rod mechanism comprises a first telescopic rod (11), a second telescopic rod (12) and a third telescopic rod (13) which are sequentially arranged on the bottom plate (5) from bottom to top, and the acting disc (2) is sleeved on the second telescopic rod (12).
3. The tool for dismounting the blade handle nut of the TLT movable blade adjustable axial flow fan impeller according to the claim 2 is characterized in that the acting disc (2) is a circular disc with a through hole (6) for being sleeved in the second telescopic rod (12) at the center, and a plurality of bulges for being inserted into the hole (8) and rotating and dismounting the blade handle nut (7) are uniformly arranged on the outer circle of the acting disc (2).
4. The tool for dismounting and mounting the TLT bucket adjustable axial flow fan impeller petiole nut of claim 3, characterized in that the through holes (6) comprise a circular through hole and a square through hole, the square through hole is positioned at the edge of the circular through hole, the acting disk (2) is sleeved in the second telescopic rod (12) through the circular through hole, and the acting disk (2) is fixed on the second telescopic rod (12) through the square through hole and a key pin.
5. Tool for dismounting TLT bucket adjustable axial fan petiole nuts according to claim 3, characterized in that the radius of the active disk (2) is the same as the radius of the petiole nut (7).
6. The tool for dismounting and mounting the TLT movable blade adjustable axial flow fan impeller petiole nut as claimed in claim 3, wherein the number of the protrusions is the same as the number of the holes (8) on the outer circle of the impeller petiole nut (7).
7. The tool for dismounting and mounting a TLT bucket adjustable axial fan impeller petiole nut according to claim 2, characterized in that the inner diameter of the first telescopic rod (11) is the same as the outer diameter of the second telescopic rod (12), and the inner diameter of the second telescopic rod (12) is the same as the outer diameter of the third telescopic rod (13).
8. The tool for dismounting and mounting the TLT movable blade adjustable axial flow fan impeller petiole nut of the claim 6 is characterized in that the top of the first telescopic rod (11) and the bottom of the second telescopic rod (12) are provided with transverse screw holes and connected through a first inner hexagonal jackscrew (31); the top of the second telescopic rod (12) and the bottom of the third telescopic rod (13) are provided with transverse screw holes and are connected through a second inner hexagonal jackscrew (32).
9. The tool for dismounting the TLT bucket adjustable axial flow fan impeller petiole nut of claim 2, characterized in that the upper surface of the bottom plate (5) is provided with a groove provided with a bearing for connecting the first telescopic rod (11) and supporting the rotation of the telescopic rod mechanism.
10. The tool for dismounting and mounting the TLT movable blade adjustable axial flow fan impeller petiole nut as claimed in claim 2, characterized in that the top end of the third telescopic rod (13) is welded with a hexagonal nut (4) for rotating the telescopic rod mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111136719.4A CN113714969A (en) | 2021-09-27 | 2021-09-27 | Tool for dismounting TLT movable blade adjustable axial flow fan impeller petiole nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111136719.4A CN113714969A (en) | 2021-09-27 | 2021-09-27 | Tool for dismounting TLT movable blade adjustable axial flow fan impeller petiole nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113714969A true CN113714969A (en) | 2021-11-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111136719.4A Pending CN113714969A (en) | 2021-09-27 | 2021-09-27 | Tool for dismounting TLT movable blade adjustable axial flow fan impeller petiole nut |
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| CN (1) | CN113714969A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201399672Y (en) * | 2009-04-03 | 2010-02-10 | 燕山大学 | Quick detaching device of roll collars of section steel straightener |
| CN111409041A (en) * | 2020-04-27 | 2020-07-14 | 广西玉柴机器股份有限公司 | Simple tool for snap gear and using method |
| CN113213332A (en) * | 2021-05-28 | 2021-08-06 | 华能（上海）电力检修有限责任公司 | Hoisting tool and method for high-pressure main valve and inner valve cover of adjusting valve of steam turbine |
| CN113352274A (en) * | 2021-04-28 | 2021-09-07 | 华能（上海）电力检修有限责任公司 | NJ bearing puller of movable blade adjustable axial flow fan bearing box |
| CN216731575U (en) * | 2021-09-27 | 2022-06-14 | 华能（上海）电力检修有限责任公司 | Tool for disassembling and assembling blade handle nut of TLT movable blade adjustable axial flow fan impeller |
-
2021
- 2021-09-27 CN CN202111136719.4A patent/CN113714969A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201399672Y (en) * | 2009-04-03 | 2010-02-10 | 燕山大学 | Quick detaching device of roll collars of section steel straightener |
| CN111409041A (en) * | 2020-04-27 | 2020-07-14 | 广西玉柴机器股份有限公司 | Simple tool for snap gear and using method |
| CN113352274A (en) * | 2021-04-28 | 2021-09-07 | 华能（上海）电力检修有限责任公司 | NJ bearing puller of movable blade adjustable axial flow fan bearing box |
| CN113213332A (en) * | 2021-05-28 | 2021-08-06 | 华能（上海）电力检修有限责任公司 | Hoisting tool and method for high-pressure main valve and inner valve cover of adjusting valve of steam turbine |
| CN216731575U (en) * | 2021-09-27 | 2022-06-14 | 华能（上海）电力检修有限责任公司 | Tool for disassembling and assembling blade handle nut of TLT movable blade adjustable axial flow fan impeller |
Non-Patent Citations (1)
| Title |
|---|
| 王德庆: "定力矩光圆螺母螺钉装拆夹具", 机械工人.冷加工, no. 11, pages 59 - 60 * |
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