Power station boiler induced draft fan blade handle bearing overhauling device

Abstract

The utility model belongs to the technical field of power station boiler induced draft fans, and particularly relates to a power station boiler induced draft fan blade handle bearing overhauling device. The device comprises a rectangular frame which is provided with a containing cavity used for containing a hub in the induced draft fan; the two driving roller groups are arranged on the lower cross beam piece of the rectangular frame at intervals, are respectively arranged on the left side and the right side of the hub and are used for supporting and limiting the hub; and the multiple guide wheel sets are arranged on the upper cross beam piece of the rectangular frame and are arranged on the front side and the rear side of the hub correspondingly. According to the maintenance device, an operator can conveniently rotate a hub to a proper position to carry out bearing maintenance, so that the time and the labor cost are greatly saved; and meanwhile, the safety risk caused by shaking of the hub is reduced, a safer working environment is provided for operators, the stability is greatly improved, and the probability of accidents is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of power station boiler induced draft fan, concretely is a kind of power station boiler induced draft fan blade handle bearing overhauling device. BACKGROUND

[0002] Power station boiler induced draft fan is an important equipment for power station boiler system. Its main role is to extract the high-temperature flue gas generated after the combustion of power station boiler from the boiler furnace and transport it to the subsequent processing equipment (such as dust remover, desulfurization device, etc.) or discharge into the atmosphere through the flue. The induced draft fan overcomes the resistance of the flue system by generating strong suction to ensure that the flue gas can be smoothly discharged, maintaining the normal operation of the boiler system. The induced draft fan usually has large power and volume to meet the needs of large-scale flue gas discharge of power station boiler. Its performance directly affects the operating efficiency, safety and environmental protection indicators of the power station boiler.

[0003] During the overhaul of the induced draft fan equipment, numerous blade handles and bearings need to be checked and replaced one by one, which is extremely time-consuming and labor-intensive. The conventional overhauling method is to use an electric hoist to vertically lift the hub, and the operating personnel perform installation operations at the bottom of the hub. After installing a set of bearings, the hub needs to be moved, and the electric hoist needs to be used throughout the lifting and moving of the hub, which is time-consuming and labor-intensive. In addition, the traditional method of vertically lifting the hub using an electric hoist has a high safety risk, such as electric hoist failure, hoisting rope breakage, etc., which may cause the hub to fall and cause serious injury to the operating personnel, so there is a high safety risk.

[0004] Therefore, the utility model provides a new type of power station boiler induced draft fan blade handle bearing overhauling device to overcome the above-mentioned defects. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a power station boiler induced draft fan blade handle bearing overhauling device, which allows the operating personnel to conveniently rotate the hub to the appropriate position for bearing overhauling, greatly saving time and labor cost; at the same time, it reduces the safety risk caused by hub shaking, provides a safer working environment for the operating personnel, greatly improves stability, and reduces the probability of accidental incidents.

[0006] The utility model adopts the following technical scheme: a power station boiler induced draft fan blade handle bearing overhauling device, comprising:

[0007] A rectangular frame has a containing cavity for placing the hub in the induced draft fan;

[0008] Two drive roller sets are arranged on the lower crossbeam member of the rectangular frame in a spaced manner and are arranged on the left and right sides of the hub respectively to support and limit the hub;

[0009] A plurality of guide wheel groups are arranged on the upper beam of the rectangular frame and are arranged on the front and rear sides of the wheel hub respectively.

[0010] Further, the rectangular frame comprises an upper beam, a right beam, a lower beam and a left beam, and the rectangular frame is formed by the upper beam, the right beam, the lower beam and the left beam.

[0011] Further, the rectangular frame further comprises a plurality of inclined support rods, the first ends of the plurality of inclined support rods are connected to the top corners of the lower beam, and the second ends extend to the upper beam.

[0012] Further, the inclined support rods are arranged at four corners of the rectangular frame respectively.

[0013] Further, the lower beam comprises a first lower beam, a second lower beam, a third lower beam and a fourth lower beam, and the first lower beam, the second lower beam, the third lower beam and the fourth lower beam are connected end to end to form the lower beam.

[0014] Further, each drive roller group comprises a front bearing seat and a rear bearing seat mounted on the first lower beam and the third lower beam respectively, and a rotating shaft supported by the front bearing seat and the rear bearing seat at two ends, and the rotating shaft is rotatably connected with the front bearing seat and the rear bearing seat.

[0015] The front bearing seat and the rear bearing seat are fixedly installed on the first lower beam and the third lower beam by bolts.

[0016] Further, the upper beam comprises a first upper beam, a second upper beam, a third upper beam and a fourth upper beam, and the first upper beam, the second upper beam, the third upper beam and the fourth upper beam are connected end to end to form the upper beam.

[0017] Further, the guide wheel groups are arranged in three groups, one group is arranged on the first upper beam, and two groups are arranged on the third upper beam.

[0018] Further, the guide wheel group comprises a support rod mounted on the first upper beam or the third upper beam, and a rotating wheel sleeved and mounted on the support rod, and the rotating wheel abuts against the outer wall of the wheel hub in the rectangular frame.

[0019] Further, positioning holes are formed in the two sides of the rectangular frame, positioning pins are mounted in the positioning holes, and the ends of the positioning pins extend into the wheel hub.

[0020] Compared with the prior art, the utility model has the advantages that:

[0021] The electric station boiler induced draft fan handle bearing overhauling device in the utility model, when using, the hub is placed in the containing cavity of the rectangular frame, so that it is located between the two drive roller groups, and the contact of the hub with the drive roller group and the guide wheel group in the rectangular frame is ensured to be good. When the operating personnel starts the inspection work of the handle bearing at the bottom of the hub, the hub can be rotated, so that the bearings of each part can be better observed and overhauled.

[0022] The drive roller group and the guide wheel group are arranged in the utility model, so that the hub can be easily moved in the rectangular frame, and it is not necessary to frequently use the electric hoist for hoisting and moving. The operating personnel can conveniently rotate the hub to a suitable position for bearing overhauling, so that the time and labor cost are greatly saved. After each group of bearings is installed, it is not necessary to spend a lot of time and energy to operate the electric hoist to move the hub, but the hub position can be directly and quickly adjusted by rotating the drive roller group, so that the continuity and efficiency of the overhauling work are improved.

[0023] Meanwhile, the hub is placed in the rectangular frame and supported and limited by the drive roller group and the guide wheel group, so that the correct position and posture of the hub during the overhauling process are ensured, the safety risk caused by the shaking of the hub is reduced, a safer working environment is provided for the operating personnel, the stability is greatly improved, and the probability of accidental accidents is reduced.

[0024] In addition, the overhauling device can also be applied to the hubs of electric station boiler induced draft fans of different models and sizes, and has strong universality. The specifications of the rectangular frame, the drive roller group and the guide wheel group only need to be adjusted according to the specific size of the hub, so that the overhauling requirements of different equipment can be met. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description can only be some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating creative labor.

[0026] Figure 1 The specific embodiment electric station boiler induced draft fan handle bearing overhauling device structure diagram of the utility model;

[0027] Figure 2 The specific embodiment electric station boiler induced draft fan handle bearing overhauling device structure diagram of the utility model;

[0028] Figure 3 The specific embodiment electric station boiler induced draft fan handle bearing overhauling device structure diagram of the utility model;

[0029] Wherein: rectangular frame 1, containing cavity 10, lower beam piece 11, first lower beam 111, second lower beam 112, third lower beam 113, fourth lower beam 114, upper beam piece 12, first upper beam 121, second upper beam 122, third upper beam 123, fourth upper beam 124, right beam piece 13, right beam 131, left beam piece 14, left beam 141, inclined strut piece 15, positioning pin 16;Drive roller set 2, front bearing seat 20, rear bearing seat 21, rotating shaft 22;Guide wheel set 3, support rod 30, rotating wheel 31;Hub 4. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor fall within the protection scope of the utility model.

[0031] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor fall within the protection scope of the utility model. Figure 1 To the drawings Figure 3 And specific embodiments, the utility model is discussed in detail:

[0032] As Figures 1-3 Indicated, the utility model provides a kind of electric station boiler induced draft fan handle bearing overhauling device, it includes:

[0033] Rectangular frame 1, the rectangular frame 1 has containing cavity 10, for placing the hub in induced draft fan;

[0034] Two drive roller sets 2, two the drive roller set 2 is spaced apart on the lower beam piece 11 of the rectangular frame 1, and is respectively arranged at the left and right sides of the hub, to support and limit the hub;

[0035] Multiple guide wheel sets 3, multiple the guide wheel set 3 is arranged on the upper beam piece 12 of the rectangular frame 1, and is respectively arranged at the front and rear sides of the hub, for supporting the upper part of limiting hub.

[0036] The electric station boiler induced draft fan handle bearing overhauling device in the utility model, when using, hub is placed in the containing cavity 10 of rectangular frame 1, so that it is located between two drive roller sets 2, ensure that it is in good contact with drive roller set 2 and guide wheel set 3 in rectangular frame 1. When the operating personnel starts the inspection work of handle bearing at the bottom of hub, can be better observed and overhauled the bearing of each part by rotating hub.

[0037] The utility model discloses a maintenance device through the setting of drive roller group 2 and guide wheel group 3, makes the wheel hub can be moved in rectangular frame 1 easily, need not frequently use electric hoist and hoist and move. When using, utilize manual rotation wheel hub, can stop at any position, and operating personnel can conveniently rotate wheel hub to the suitable position and carry out bearing maintenance, satisfy bearing installation and fill lubricating oil demand, and greatly save time and manpower cost. After every installation is complete a group of bearings, need not consume a lot of time and energy to operate electric hoist and move wheel hub, but can directly through drive roller group 2 rotation and quickly adjust wheel hub position, improve the continuity and efficiency of maintenance work.

[0038] Meanwhile, because wheel hub is placed in rectangular frame 1, and is supported and is positioned by drive roller group 2 and guide wheel group 3, ensure that wheel hub keeps correct position and posture during the maintenance process, reduce the security risk that wheel hub shakes, provide more safe working environment for operating personnel, and greatly improve stability, reduce the probability of accident.

[0039] In addition, the maintenance device can also be applicable to different models and sizes of power station boiler induced draft fan wheel hub, has stronger universality. Only need to adjust the specification of rectangular frame 1, drive roller group 2 and guide wheel group 3 according to the specific size of wheel hub, can satisfy the maintenance demand of different equipment.

[0040] Further, in some specific embodiments, as shown in Figure 1 、 2 The rectangular frame 1 includes an upper cross beam member 12, a right cross beam member 13, a lower cross beam member 11 and a left cross beam member 14, and is formed by the upper cross beam member 12, the right cross beam member 13, the lower cross beam member 11 and the left cross beam member 14. The rectangular frame 1 has a simple structure and is formed by four cross beam members, forming a closed geometric shape with good stability. During maintenance, it can withstand the weight of the wheel hub and various forces that may occur during operation, and is not prone to deformation or collapse, providing a stable support structure for the placement and maintenance of the wheel hub.

[0041] It should be noted that the utility model does not limit how the upper cross beam member 12, the right cross beam member 13, the lower cross beam member 11 and the left cross beam member 14 are connected and fixed, such as welding, bolt connection, buckle connection, etc. All of these are within the scope of protection of the utility model.

[0042] In some more specific embodiments, the specific design of the upper cross beam member 12, the right cross beam member 13, the lower cross beam member 11 and the left cross beam member 14 is given, and the specific technical solutions are as follows:

[0043] The upper cross beam member 12 comprises a first upper cross beam 121, a second upper cross beam 122, a third upper cross beam 123 and a fourth upper cross beam 124, and is formed by connecting the first upper cross beam 121, the second upper cross beam 122, the third upper cross beam 123 and the fourth upper cross beam 124 end to end.

[0044] The lower cross beam member 11 comprises a first lower cross beam 111, a second lower cross beam 112, a third lower cross beam 113 and a fourth lower cross beam 114, and is formed by connecting the first lower cross beam 111, the second lower cross beam 112, the third lower cross beam 113 and the fourth lower cross beam 114 end to end.

[0045] The right cross beam member 13 comprises two vertically arranged right cross beams 131, which are arranged in a spaced manner, and the upper and lower ends of the two right cross beams 131 are fixedly connected with the ends of the second upper cross beam 122 and the second lower cross beam 112, respectively.

[0046] The left cross beam member 14 comprises two vertically arranged left cross beams 141, which are arranged in a spaced manner, and the upper and lower ends of the two left cross beams 141 are fixedly connected with the ends of the fourth upper cross beam 124 and the fourth lower cross beam 114, respectively.

[0047] The design of the upper cross beam member 12, the right cross beam member 13, the lower cross beam member 11 and the left cross beam member 14 is simple in structure and low in manufacturing cost. Meanwhile, in the embodiment, the cross beams in the upper cross beam member 12, the right cross beam member 13, the lower cross beam member 11 and the left cross beam member 14 are all designed as I-beams or angle irons, which are simple in structure and low in manufacturing cost.

[0048] Further, in some specific embodiments, in order to prevent the rectangular frame 1 from overturning, a diagonal strut member 15 is added, and the specific design scheme is as follows: the rectangular frame 1 further comprises a plurality of diagonal strut members 15, the first ends of the plurality of diagonal strut members 15 are connected with the top corners of the lower cross beam member 11, and the second ends extend to the upper cross beam member 2, and correspondingly, a triangular support structure is formed on the rectangular frame 1. The triangular support structure can effectively disperse and transfer loads, so that the forces on each part of the frame are more uniform, the risk of local stress concentration is reduced, and the service life of the frame is prolonged.

[0049] In the embodiment, four diagonal strut members 15 are arranged at the four corners of the rectangular frame 1. Arranging the diagonal strut members 15 at the four corners of the rectangular frame 1 to form a triangular support structure can significantly improve the stability of the entire rectangular frame 1. During the maintenance process, even if the frame is subjected to the weight of the hub and possible external forces, the frame is not easy to deform or shake.

[0050] Further, in some specific embodiments, each of the drive roller groups 2 comprises a front bearing seat 20 and a rear bearing seat 21 respectively mounted on the first lower cross beam 111 and the third lower cross beam 113, a rotating shaft 22 supported at both ends by the front bearing seat 20 and the rear bearing seat 21, the rotating shaft 22 being rotationally connected with the front bearing seat 20 and the rear bearing seat 21, and the rotating shaft 22 being contact-connected with both sides of the wheel hub to achieve support and limiting of the wheel hub. The rotating shaft 22 is supported at both ends by the front bearing seat 20 and the rear bearing seat 21, which can ensure the stability of the rotating shaft 22 during rotation. The bearing seat can provide good support and positioning to prevent the rotating shaft 22 from deviating or shaking, thereby ensuring the normal operation of the drive roller group 2. At the same time, the rotating connection mode enables the rotating shaft 22 to rotate flexibly, reducing friction and resistance and facilitating rotation of the wheel hub.

[0051] In the present embodiment, the front bearing seat 20 and the rear bearing seat 21 are fixedly installed on the first lower cross beam 111 and the third lower cross beam 113 by bolts, which is simple and fast. The use of bolt connection facilitates disassembly and replacement. When the bearing seat fails or needs maintenance, it can be easily removed from the cross beam, improving the maintenance efficiency.

[0052] Further, in some specific embodiments, the guide roller group 3 is provided in three groups, one group being arranged on the first upper cross beam 121 and two groups being arranged on the third upper cross beam 123 in a spaced manner, the wheel hub being limited by the guide roller group 3, and the three groups of guide roller groups 3 forming a triangular support structure, which has natural stability. The three groups of guide roller groups 3 form a triangular structure to limit the wheel hub, which can effectively prevent the wheel hub from shaking and moving in various directions, ensuring that the wheel hub maintains a stable position during maintenance.

[0053] More specifically, the guide roller group 3 comprises a support rod 30 mounted on the first upper cross beam 121 or the third upper cross beam 123, and a rotating wheel 31 sleeved and mounted on the support rod 30. The support rod 30 can be installed on the cross beam by welding, bolt connection or the like, which is relatively simple and convenient. The rotating wheel 31 abuts against the outer wall of the wheel hub in the rectangular frame 1 and is in contact with the outer wall of the wheel hub to limit the wheel hub. Since the rotating wheel 31 can rotate freely on the support rod 30, when the wheel hub moves in the rectangular frame 1, the rotating wheel 31 can rotate flexibly with the movement of the wheel hub, reducing the frictional resistance between the wheel hub and the guide roller group 3 and making the movement of the wheel hub more smooth.

[0054] Further, in some specific embodiments, positioning holes are formed on two sides of the rectangular frame 1, positioning pins 16 are installed in the positioning holes, and the ends of the positioning pins 16 extend into the wheel hub. When the wheel hub is fixed by the positioning pins 16, the position of the wheel hub is more stable and cannot move due to slight external force or vibration, which can effectively prevent the wheel hub from rotating accidentally, greatly reduces the safety risk, and guarantees the life safety of the operating personnel.

[0055] The utility model is further described above by means of specific embodiments, but it should be understood that the specific description here should not be understood as the limitation on the essence and scope of the utility model, and various modifications made to the above embodiments by ordinary skilled persons in the art after reading the specification all belong to the scope protected by the utility model.

Claims

1. A kind of power station boiler induced draft fan handle bearing overhaul device, it is characterized by: It includes: A rectangular frame with a containing cavity for placing the hub of the induced draft fan; Two drive roller groups, two said drive roller groups are arranged on the lower crossbeam of the rectangular frame and are arranged on the left and right sides of the hub respectively, to support and limit the hub; A plurality of guide wheel groups, a plurality of said guide wheel groups are arranged on the upper crossbeam of the rectangular frame and are arranged on the front and rear sides of the hub respectively.

2. The electric station boiler induced draft fan handle bearing maintenance device according to claim 1, characterized in that: The rectangular frame includes an upper crossbeam, a right crossbeam, a lower crossbeam and a left crossbeam, and the rectangular frame is formed by the upper crossbeam, the right crossbeam, the lower crossbeam and the left crossbeam.

3. The electric station boiler induced draft fan handle bearing maintenance device according to claim 2, characterized in that: The rectangular frame further includes a plurality of inclined support rod members, the first ends of the plurality of inclined support rod members are connected with the top corners of the lower crossbeam, and the second ends extend to the upper crossbeam.

4. The electric station boiler induced draft fan handle bearing maintenance device according to claim 3, characterized in that: The inclined support rod members are four, which are arranged at the four corners of the rectangular frame respectively.

5. The electric station boiler induced draft fan handle bearing maintenance device according to claim 1, characterized in that: The lower crossbeam includes a first lower crossbeam, a second lower crossbeam, a third lower crossbeam and a fourth lower crossbeam, and the lower crossbeam is formed by the first lower crossbeam, the second lower crossbeam, the third lower crossbeam and the fourth lower crossbeam connected end to end.

6. The electric station boiler induced draft fan handle bearing maintenance device according to claim 5, characterized in that: Each of the drive roller groups includes a front bearing seat and a rear bearing seat mounted on the first lower crossbeam and the third lower crossbeam respectively, a rotating shaft supported by the front bearing seat and the rear bearing seat at both ends, and the rotating shaft is rotatably connected with the front bearing seat and the rear bearing seat; The front bearing seat and the rear bearing seat are fixedly installed on the first lower crossbeam and the third lower crossbeam by bolts.

7. The electric station boiler induced draft fan handle bearing maintenance device according to claim 1, characterized in that: The upper crossbeam includes a first upper crossbeam, a second upper crossbeam, a third upper crossbeam and a fourth upper crossbeam, and the upper crossbeam is formed by the first upper crossbeam, the second upper crossbeam, the third upper crossbeam and the fourth upper crossbeam connected end to end.

8. The electric station boiler induced draft fan handle bearing maintenance device according to claim 7, characterized in that: The guide wheel groups are three groups, one group is arranged on the first upper crossbeam, and two groups are arranged on the third upper crossbeam.

9. The electric station boiler induced draft fan handle bearing maintenance device according to claim 8, characterized in that: The guide wheel group includes a support rod mounted on the first upper crossbeam or the third upper crossbeam, and a rotating wheel sleeved and mounted on the support rod, and the rotating wheel abuts against the outer wall of the hub in the rectangular frame.

10. The electric station boiler induced draft fan handle bearing maintenance device according to claim 1, characterized in that: Two sides of the rectangular frame are provided with positioning holes, positioning pins are installed in the positioning holes, and the ends of the positioning pins extend into the wheel hub.

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