Large fan impeller pressure plate bolt retaining device and system

Abstract

The utility model provides a large fan impeller pressure plate bolt retaining device and system, and discloses a large fan impeller pressure plate bolt retaining device which comprises a retaining backing ring, a plurality of retaining filler strips and a plurality of retaining gaskets, the retaining backing ring is provided with a plurality of first through holes, the retaining filler strips are provided with a plurality of second through holes, and the retaining gaskets are arranged in the first through holes. A third through hole is formed in the retaining gasket, and the retaining cushion strip is located between the retaining cushion ring and the retaining gasket; the utility model further discloses a large fan impeller pressure plate bolt retaining system which comprises a fan and the large fan impeller pressure plate bolt retaining device. The whole set is convenient to assemble, assemble and disassemble, and meanwhile the metallographic phase and the strength of the fixing bolts can be prevented from changing.

Description

TECHNICAL FIELD

[0001] The utility model relates to fan pressure disc stop retreat technical field especially, a kind of large fan impeller pressure disc bolt stop retreat device and system. BACKGROUND

[0002] The shear force and alternating stress that several fixing bolts for fixing pressure disc in fan bear in the process of impeller rotation, vibration etc. are larger, prone to loosening even fracture.

[0003] At present, the head of the above several fixing bolts is welded together by round steel, so as to realize the stop retreat of fixing bolt, but this stop retreat mode can cause the change of metallographic phase and strength of fixing bolt. INVENTION CONTENTS

[0004] According to the technical problem proposed above, a large fan impeller pressure disc bolt stop retreat device and system are provided.The utility model is whole assembly and convenient to assemble and disassemble, and can also avoid the change of metallographic phase and strength of fixing bolt.The technical means adopted by the utility model is as follows:

[0005] Firstly, a large fan impeller pressure disc bolt stop retreat device is provided, which comprises a stop retreat gasket ring, several stop retreat gasket strips and several stop retreat gasket pieces.A plurality of first through holes are formed in the stop retreat gasket ring, and all the first through holes in the stop retreat gasket ring correspond to all the fixing bolts on the fan one by one.A plurality of second through holes are formed in the stop retreat gasket strip, and all the second through holes in the stop retreat gasket strip correspond to all the fixing bolts on the fan one by one.A third through hole is formed in the stop retreat gasket piece, and all the third through holes in the stop retreat gasket piece correspond to all the fixing bolts on the fan one by one.The stop retreat gasket strip is located between the stop retreat gasket ring and the stop retreat gasket piece.

[0006] Further, it further comprises several first stop retreat sawteeth and several second stop retreat sawteeth.The first stop retreat sawteeth and the second stop retreat sawteeth can be shape-fittingly engaged together, and the several first stop retreat sawteeth correspond to the several second stop retreat sawteeth one by one.The first stop retreat sawteeth are arranged on one side of the stop retreat gasket strip close to the stop retreat gasket piece, and the several first stop retreat sawteeth are one by one correspondingly surrounded outside all the second through holes on the several stop retreat gasket strips.The second stop retreat sawteeth are arranged on one side of the stop retreat gasket piece close to the stop retreat gasket strip, and the several second stop retreat sawteeth are one by one correspondingly surrounded outside all the third through holes on the several stop retreat gasket pieces.

[0007] Further, the lifting angle of the first stop retreat sawteeth and the lifting angle of the second stop retreat sawteeth are both greater than the thread lifting angle of the fixing bolt of the fan.

[0008] Further, the first anti-rotation sawtooth and the second anti-rotation sawtooth are further included; the first anti-rotation sawtooth is arranged on one side of the retainer washer close to the retainer ring, and the first anti-rotation sawtooth surrounds the second through hole of the retainer strip one by one; the second anti-rotation sawtooth is arranged on one side of the retainer washer far away from the retainer strip, and the second anti-rotation sawtooth surrounds the third through hole of the retainer washer one by one.

[0009] In the second aspect, the large fan impeller and pressure disc bolt retainer system comprises a fan, wherein the fan comprises a rotating shaft, an impeller, a pressure disc and a plurality of fixing bolts, a plurality of fixing bolt holes are arranged on an end surface of a shaft head of the rotating shaft, the impeller is coaxially arranged on the shaft head of the rotating shaft, a plurality of fixing through holes are arranged on the pressure disc, the pressure disc is arranged on the end surface of the shaft head of the rotating shaft, two sides of the impeller in the axial direction are respectively attached to a shaft shoulder of the rotating shaft and the pressure disc, the plurality of fixing through holes correspond to the plurality of fixing bolt holes one by one, the plurality of fixing bolts correspond to the plurality of fixing through holes one by one, a rod part of the fixing bolt can be simultaneously arranged in the fixing through hole and the fixing bolt hole corresponding to the fixing bolt, and the large fan impeller and pressure disc bolt retainer system further comprises the large fan impeller and pressure disc bolt retainer device in any one of the first aspect.

[0010] The utility model has the advantages of the following:

[0011] 1、 the utility model discloses, through setting up retainer ring, retainer strip and retainer washer between the head of fixing bolt and pressure disc, the retainer of fixing bolt is realized, compared with prior art, adopts round steel and welds together the head of several fixing bolts, realizes the retainer of fixing bolt, the utility model discloses whole assembly and convenient to assemble and disassemble, can also avoid the change of metallographic phase and strength of fixing bolt.

[0012] 2. The utility model discloses when the fixed bolt appears loose, first stop the retreat sawtooth with second stop the retreat sawtooth no longer bite, because the head of fixed bolt and the second anti -rotation sawtooth on the stop the retreat gasket contact and stop the retreat gasket ring with the first anti -rotation sawtooth on the stop the retreat gasket strip contact, stop the retreat gasket can be rotated under the head of fixed bolt relative to stop the retreat gasket ring, because the lifting angle of first stop the retreat sawtooth and the lifting angle of second stop the retreat sawtooth all are greater than the lifting angle of fixed bolt, and therefore first stop the retreat sawtooth and second stop the retreat sawtooth can prevent stop the retreat gasket and fixed bolt relative to stop the retreat gasket ring continue to rotate, further improve the stop the retreat effect of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, below will be to the drawing needed to be used in the embodiment or prior art description do with simple introduction, obviously, the drawing in the following description is some embodiments of the utility model, for those skilled in the art, under the premise of not paying the creative labor, can also obtain other drawings according to these drawings.

[0014] Figure 1 It is the overall structural drawing of a large fan impeller pressure disc bolt stop device in the utility model;

[0015] Figure 2 It is the overall structural drawing of a stop the retreat gasket ring in the utility model;

[0016] Figure 3 It is the overall structural drawing of a stop the retreat gasket strip in the utility model;

[0017] Figure 4 It is the overall structural drawing of a stop the retreat gasket in the utility model;

[0018] Figure 5 It is the explosion structural drawing of a large fan impeller pressure disc bolt stop device in the utility model;

[0019] Figure 6 It is the schematic drawing of the lifting angle of first stop the retreat sawtooth, the lifting angle of second stop the retreat sawtooth and the lifting angle of the thread of fixed bolt in the utility model;

[0020] Figure 7 It is the overall structural drawing of a large fan impeller pressure disc bolt stop system in the utility model;

[0021] Drawing reference: 1-stop the retreat gasket ring;2-stop the retreat gasket strip;3-stop the retreat gasket;101-first through -hole;201-second through -hole;202-first stop the retreat sawtooth;203-first anti -rotation sawtooth;301-third through -hole;302-second stop the retreat sawtooth;303-second anti -rotation sawtooth. DETAILED DESCRIPTION

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] Example 1:

[0024] like Figures 1 to 6 As shown, a large fan impeller pressure plate bolt anti-reverse device includes an anti-reverse washer ring 1, several anti-reverse washer strips 2, and several anti-reverse washer plates 3. The anti-reverse washer ring 1 has several first through holes 101, and all the first through holes 101 on the anti-reverse washer ring 1 correspond one-to-one with all the fixing bolts on the fan. The anti-reverse washer strips 2 have several second through holes 201, and all the second through holes 201 on the several anti-reverse washer strips 2 correspond one-to-one with all the fixing bolts on the fan. The anti-reverse washer plates 3 have third through holes 301, and all the third through holes 301 on the several anti-reverse washer plates 3 correspond one-to-one with all the fixing bolts on the fan. The anti-reverse washer strips 2 are located between the anti-reverse washer ring 1 and the anti-reverse washer plates 3.

[0025] Specifically, this embodiment includes a backstop ring 1, three backstop strips 2 and six backstop pads 3. The backstop ring 1 has six first through holes 101 evenly distributed along its circumferential direction. The backstop strips 2 have two second through holes 201. The backstop pads 3 have one third through hole 301.

[0026] In this embodiment, a plurality of first anti-reverse saw teeth 202 and a plurality of second anti-reverse saw teeth 302 are also included. The first anti-reverse saw teeth 202 and the second anti-reverse saw teeth 302 can be fitted together in a shape-adaptive manner. The plurality of first anti-reverse saw teeth 202 and the plurality of second anti-reverse saw teeth 302 correspond one-to-one. The first anti-reverse saw teeth 202 are disposed on the side of the anti-reverse pad 2 near the anti-reverse pad 3. The plurality of first anti-reverse saw teeth 202 are disposed one-to-one around all the second through holes 201 on the plurality of anti-reverse pads 2. The second anti-reverse saw teeth 302 are disposed on the side of the anti-reverse pad 3 near the anti-reverse pad 2. The plurality of second anti-reverse saw teeth 302 are disposed one-to-one around all the third through holes 301 on the plurality of anti-reverse pads 3.

[0027] Specifically, this embodiment includes six first anti-reverse saw teeth 202 and six second anti-reverse saw teeth 302.

[0028] In the embodiment, the lifting angle a of the first retreat-preventing serration 202 and the lifting angle a of the second retreat-preventing serration 302 are both greater than the thread lifting angle b of the fixing bolt of the fan.

[0029] In the embodiment, a plurality of first rotation-preventing serrations 203 and a plurality of second rotation-preventing serrations 303 are further included; the first rotation-preventing serrations 203 are arranged on the side of the retreat-preventing pad strip 2 close to the retreat-preventing pad ring 1, and the plurality of first rotation-preventing serrations 203 are correspondingly arranged outside all the second through holes 201 on the plurality of retreat-preventing pad strips 2; the second rotation-preventing serrations 303 are arranged on the side of the retreat-preventing pad piece 3 away from the retreat-preventing pad strip 2, and the plurality of second rotation-preventing serrations 303 are correspondingly arranged outside all the third through holes 301 on the plurality of retreat-preventing pad pieces 3.

[0030] Specifically, the embodiment includes six first rotation-preventing serrations 203 and six second rotation-preventing serrations 303.

[0031] In addition, the number of serrations in the first rotation-preventing serration 203 is greater than both the number of serrations in the first retreat-preventing serration 202 and the number of serrations in the second retreat-preventing serration 302, and the number of serrations in the second rotation-preventing serration 303 is greater than both the number of serrations in the first retreat-preventing serration 202 and the number of serrations in the second retreat-preventing serration 302.

[0032] Embodiment 2:

[0033] As Figures 1 to 7As shown, a large fan impeller pressure disc bolt anti-backout system, comprising a fan, the fan comprising a rotating shaft, an impeller, a pressure disc and a plurality of fixing bolts, a plurality of fixing screw holes are formed on the shaft head end face of the rotating shaft, the impeller is coaxially sleeved on the shaft head of the rotating shaft, a plurality of fixing through holes are formed on the pressure disc, the pressure disc is installed on the shaft head end face of the rotating shaft, the axis direction of the impeller is respectively combined with the shaft shoulder and the pressure disc, the plurality of fixing through holes and the plurality of fixing screw holes are one-to-one corresponding, the plurality of fixing bolts and the plurality of fixing through holes are one-to-one corresponding, the rod part of the fixing bolt can be simultaneously installed in the fixing through hole and the fixing screw hole corresponding thereto, and further comprising the large fan impeller pressure disc bolt anti-backout device in any one of the embodiments 1; the side of the anti-backout washer 1 in the large fan impeller pressure disc bolt anti-backout device away from the anti-backout washer 2 is combined with the pressure disc; the second anti-rotation sawtooth 303 in the large fan impeller pressure disc bolt anti-backout device is in contact with the head of the fixing bolt; the first anti-backout sawtooth 202 and the second anti-backout sawtooth 302 in the large fan impeller pressure disc bolt anti-backout device are adaptively engaged together; the first anti-rotation sawtooth 203 in the large fan impeller pressure disc bolt anti-backout device is in contact with the anti-backout washer 1; the rod part of the fixing bolt can simultaneously penetrate the first through hole 101, the second through hole 201 and the third through hole 301 corresponding thereto.

[0034] Specifically, the embodiment includes a rotating shaft, an impeller, a pressure disc and six fixing bolts, six first screw holes are uniformly distributed on the shaft shoulder of the rotating shaft along the circumferential direction thereof and are formed, six second screw holes are uniformly distributed on the impeller along the circumferential direction thereof and are formed, and six third screw holes are uniformly distributed on the pressure disc along the circumferential direction thereof and are formed.

[0035] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A device for preventing the bolts from slipping off a large wind turbine impeller pressure plate, characterized in that, It includes a backstop ring (1), several backstop strips (2) and several backstop washers (3); The anti-reverse washer (1) has a plurality of first through holes (101), and all the first through holes (101) on the anti-reverse washer (1) correspond one-to-one with all the fixing bolts on the fan; The anti-reverse pad (2) is provided with a plurality of second through holes (201), and all the second through holes (201) on the plurality of anti-reverse pads (2) correspond one-to-one with all the fixing bolts on the fan; The anti-reverse gasket (3) is provided with a third through hole (301), and all the third through holes (301) on the plurality of anti-reverse gaskets (3) correspond one-to-one with all the fixing bolts on the fan; The anti-reverse pad (2) is located between the anti-reverse pad ring (1) and the anti-reverse pad (3).

2. The anti-retraction device for bolts on a large wind turbine impeller pressure plate according to claim 1, characterized in that, It also includes several first anti-reverse saw teeth (202) and several second anti-reverse saw teeth (302); The first anti-reverse saw teeth (202) and the second anti-reverse saw teeth (302) can be meshed together in a shape-fitting manner, and the plurality of first anti-reverse saw teeth (202) and the plurality of second anti-reverse saw teeth (302) correspond one-to-one; The first anti-reverse saw teeth (202) are disposed on the side of the anti-reverse pad (2) near the anti-reverse pad (3). The plurality of first anti-reverse saw teeth (202) are arranged one-to-one around all the second through holes (201) on the plurality of anti-reverse pads (2). The second anti-reverse saw teeth (302) are disposed on the side of the anti-reverse pad (3) near the anti-reverse pad (2). The plurality of second anti-reverse saw teeth (302) are arranged one-to-one around all the third through holes (301) on the plurality of anti-reverse pads (3).

3. The anti-retraction device for bolts on a large wind turbine impeller pressure plate according to claim 2, characterized in that, The lifting angle of the first anti-reverse saw tooth (202) and the lifting angle of the second anti-reverse saw tooth (302) are both greater than the thread lifting angle of the fixing bolt of the fan.

4. The anti-retraction device for bolts on a large wind turbine impeller pressure plate according to claim 1, characterized in that, It also includes several first rotary saw teeth (203) and several second rotary saw teeth (303); The first anti-rotation saw teeth (203) are disposed on the side of the anti-reverse pad (2) near the anti-reverse pad ring (1). The plurality of first anti-rotation saw teeth (203) are arranged one-to-one around all the second through holes (201) on the plurality of anti-reverse pads (2). The second anti-rotation saw teeth (303) are disposed on the side of the anti-reverse pad (3) away from the anti-reverse pad (2). The plurality of second anti-rotation saw teeth (303) are arranged one-to-one around all the third through holes (301) on the plurality of anti-reverse pads (3).

5. A large fan impeller pressure plate bolt anti-retraction system, comprising a fan, the fan including a rotating shaft, an impeller, a pressure plate, and a plurality of fixing bolts, wherein the rotating shaft has a plurality of fixing screw holes on its shaft end face, the impeller is coaxially sleeved on the shaft end, the pressure plate has a plurality of fixing through holes, the pressure plate is mounted on the shaft end face, the two sides of the impeller along the axial direction respectively fit against the shaft shoulder and the pressure plate, the plurality of fixing through holes correspond one-to-one with the plurality of fixing screw holes, the plurality of fixing bolts correspond one-to-one with the plurality of fixing through holes, and the shank of the fixing bolt can be simultaneously installed in the corresponding fixing through hole and fixing screw hole, characterized in that, It also includes a large wind turbine impeller pressure plate bolt anti-retraction device as described in any one of claims 1 to 4; The side of the anti-reverse washer (1) away from the anti-reverse washer strip (2) in the anti-reverse washer ring (1) of the large wind turbine impeller pressure plate bolt anti-reverse device is in contact with the pressure plate; The second anti-rotation sawtooth (303) in the large wind turbine impeller pressure plate bolt anti-retraction device contacts the head of the fixing bolt; The first anti-reverse sawtooth (202) and the second anti-reverse sawtooth (302) in the large wind turbine impeller pressure plate bolt anti-reverse device are meshed together in a shape that is adapted to each other; The first anti-rotation sawtooth (203) in the large wind turbine impeller pressure plate bolt anti-retraction device contacts the anti-retraction washer (1); The shank of the fixing bolt can be installed simultaneously in the corresponding first through hole (101), second through hole (201) and third through hole (301).

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