CN208633980U

CN208633980U - A kind of fan paddle-changing system

Info

Publication number: CN208633980U
Application number: CN201821144257.4U
Authority: CN
Inventors: 范余东; 梁志强
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-07-19
Filing date: 2018-07-19
Publication date: 2019-03-22
Anticipated expiration: 2028-07-19

Abstract

The utility model belongs to blower technical field, in particular to a kind of fan paddle-changing system.Including triangle flange, swivel bearing flange, front mounting flange, variable pitch bar, rear portion anchor ear and hollow shaft, wherein triangle flange is a tight fit in the outside of hollow shaft, variable pitch bar is inserted in hollow shaft and front end passes through bearing assembly and hollow axis connection, front mounting flange be set to the front end of triangle flange and with triangle flanged joint, rear portion anchor ear is set to the rear end of triangle flange and holds tightly in the outside of hollow shaft, and front mounting flange is connect with rear portion anchor ear.The utility model avoids the relative motion between triangle flange and hollow shaft, alternating load suffered by hollow shaft most weak in blade pitch device is effectively connect bolt with swivel bearing is transferred to intensity and is entirely capable of in the hollow shaft met the requirements, avoids and connects bolt between swivel bearing and hollow shaft because being broken by axial shearing force.

Description

A kind of fan paddle-changing system

Technical field

The utility model belongs to blower technical field, in particular to a kind of fan paddle-changing system.

Background technique

Fan paddle-changing system is all made of hydraulic-driven, and pitch drive includes hydraulic cylinder, variable pitch bar, hollow shaft, triangle Flange, connecting crank, torque arm, swivel bearing, guide rod.Triangle flange is connect with three blades respectively by connecting crank, Variable pitch cylinder transfers force to triangle flange by variable pitch bar, pushes blade bearing to move in a circle by connecting crank, thus real The variation of existing blade pitch angle.

With the growth of fan operation time, normal mechanical abrasion is inevitable, and lubricating maintenance is not in place, steam and sand and dust Damage is more refaced into mechanical part fit clearance, anemoscope centering inaccuracy, turbulent flow and cutting become, blade zero degree is drifted about, leaf A series of abnormal phenomenon such as the gap in bushing gap, connecting crank gap and guide rod are all straight before and after piece bearing clearance, hollow shaft Connecing influences triangle flange stress balance, to cause the bolt of swivel bearing flange and hollow axis connection because seriously unbalanced Alternating load and fatigue are so that fracture, triangle flange and hollow shaft, which are worn, causes fit-up gap to expand, hollow shaft under normal circumstances Hardness all can be more than the hardness of triangle flange.Therefore, it is substantially the abrasion of triangle flange pilot hole to become larger, continue after bolt fracture Variable pitch operation causes hollow shaft to be further worn out with triangle flange pilot hole and scraps.The triangle flange for not having hollow shaft to support exists Abnormal displacement is generated in variable pitch operational process, variable pitch bar is led to the hydraulic cylinder of hydraulic cylinder damage, damage by unbalanced force deformation Sealing clast, which enters hydraulic system, causes hydraulic system to damage failure, and the large drag forces formed in operation are bound to cause swivel bearing Damage, connecting crank fall off, variable pitch bar is broken, guide runner damage, guide rod abrasion deformation, and even more serious person will cause triangle Flange and guide rod connecting lugs are damaged.Any of the above phenomenons can all directly contribute blower and shut down for a long time, and consumption is a large amount of Wind field profit, time bomb of the risk like being embedded in wind field.

Utility model content

In view of the above-mentioned problems, the purpose of this utility model is to provide a kind of fan paddle-changing system, to solve existing blower Structure is because of triangle flange force unbalance, the problem of causing swivel bearing and the bolt strained fracture of hollow axis connection.

To achieve the goals above, the utility model uses following technical scheme:

A kind of fan paddle-changing system, including triangle flange, swivel bearing flange, front mounting flange, variable pitch bar, rear portion armful Hoop and hollow shaft, wherein triangle flange is a tight fit in the outside of hollow shaft, and variable pitch bar is inserted in hollow shaft and front end passes through axis Bearing assembly and the hollow axis connection, the front mounting flange be set to the front end of the triangle flange and with the triangle Flanged joint, the rear portion anchor ear are set to the rear end of the triangle flange and hold tightly in the outside of the hollow shaft, before described Portion's mounting flange is connect with the rear portion anchor ear.

The bearing assembly includes swivel bearing flange and swivel bearing, and the swivel bearing is sheathed on the variable pitch bar It is upper and with the swivel bearing flanged joint, the swivel bearing flange is located at the front mounting flange and the trigonometry Between orchid, and with the hollow axis connection, the front mounting flange, the swivel bearing flange and triangle flange are connected as one Body.

The rear portion anchor ear is separate structure, including symmetrically arranged left half anchor ear and right half anchor ear, left half anchor ear It include half-axile sleeve and the annular convex platform for being set to the half-axile sleeve end with right half anchor ear, wherein the two sides of half-axile sleeve are set There is ear mount, left half anchor ear is connected with right half anchor ear by the ear mount of two sides, and the annular convex platform and the front are solid Determine flanged joint.

The annular convex platform is vertical with the axis of the half-axile sleeve, the end face of the annular convex platform and the triangle flange Side is bonded and is fixedly connected by circumferentially arranged multiple bolts.

The front mounting flange is triangular structure and connect at three angles with the rear portion anchor ear.

The advantages of the utility model and beneficial effect are: the utility model is to use the special-purpose member of design by pitch-controlled system Hollow shaft, triangle flange, the big component of swivel bearing three are fastenedly connected and are integrated, and avoid the phase between triangle flange and hollow shaft To movement, hollow shaft most weak in blade pitch device is effectively connect bolt with swivel bearing suffered by alternating load be transferred to by force Degree is entirely capable of in the hollow shaft met the requirements, is avoided and is connected bolt between swivel bearing and hollow shaft because disconnected by axial shearing force It splits.The upgrading scheme can carry out corresponding change according to the actual outer dimensions and screw thread specification of different type of machines.

Blower availability had both can be improved in the utility model, improved generated energy, can also reduce the mechanical event of pitch-controlled system Barrier reduces security risk.The utility model is reinforced on the basis of not changing blower original structure, does not change the original fortune of blower Row mode will not increase fan trouble because of the execution of the program.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the structural schematic diagram of the utility model middle and back anchor ear；

Fig. 3 is the left view of Fig. 2；

Fig. 4 is the top view of Fig. 2；

Fig. 5 is the structural schematic diagram of the utility model middle front part mounting flange.

In figure: 1 is blade bearing, and 2 be triangle flange, and 3 be swivel bearing flange, and 4 be front mounting flange, and 5 be rotation Bearing, 6 be nut, and 7 be variable pitch bar, and 8 be rear portion anchor ear, and 81 be half-axile sleeve, and 82 be ear mount, and 83 be ear mount connecting hole, and 84 be ring Shape boss, 85 be boss connecting hole, and 9 be wheel hub, and 10 be hollow shaft, and 11 be hollow shaft support bushing, and 12 be blade connecting rod, 13 For torque arm.

Specific embodiment

In order to keep the purpose of this utility model, technical solution and advantage clearer, with reference to the accompanying drawing and it is embodied The utility model is described in detail in example.

As shown in Figure 1, a kind of fan paddle-changing system provided by the utility model, including triangle flange 2, swivel bearing flange 3, front mounting flange 4, variable pitch bar 7, rear portion anchor ear 8 and hollow shaft 10, wherein triangle flange 2 is a tight fit in the outer of hollow shaft 10 Side, variable pitch bar 7 is inserted in hollow shaft 10 and front end is connect by bearing assembly with hollow shaft 10, and front mounting flange 4 is arranged In triangle flange 2 front end and connect with triangle flange 2, rear portion anchor ear 8 be set to the rear end of triangle flange 2 and hold tightly in sky The outside of mandrel 10, front mounting flange 4 are connect with rear portion anchor ear 8.

Bearing assembly includes swivel bearing flange 3 and swivel bearing 5, swivel bearing 5 be sheathed on variable pitch bar 7 and with rotation Turn the connection of bearing flange 3, swivel bearing flange 3 connects between front mounting flange 4 and triangle flange 2, and with hollow shaft 10 It connects, front mounting flange 4, swivel bearing flange 3 and triangle flange 2 are connected as one.

As in Figure 2-4, rear portion anchor ear 8 is separate structure, including symmetrically arranged left half anchor ear and right half anchor ear, a left side half Anchor ear and right half anchor ear include half-axile sleeve 81 and the annular convex platform 84 for being set to 81 end of half-axile sleeve, wherein the two of half-axile sleeve 81 Side is equipped with ear mount 82, and left half anchor ear and right half anchor ear are connected by the ear mount 82 of two sides, annular convex platform 84 and front mounting flange 4 Connection.

Annular convex platform 84 is vertical with the axis of half-axile sleeve 81, the end face of annular convex platform 84 is bonded with the side of triangle flange 2, And it is fixedly connected by circumferentially arranged multiple bolts.

As shown in figure 5, front mounting flange 4 is triangular structure and passes through three stay bolts and rear portion at three angles The annular convex platform 84 of anchor ear 8 connects.

In order to prevent during fan operation triangle flange by unbalanced torque when cause rear portion anchor ear 8 and hollow shaft 10 It is loosened after abrasion, which must carry out when blower carries out regular inspection according to regulation torque tight as annual test project Gu.The specific size data of front mounting flange 4 and rear portion anchor ear 8 can adjust accordingly variation according to different type of machines.

Aiming at the problem that swivel bearing fracture bolt strained with hollow axis connection, triangle flange, swivel bearing and sky are formulated Mandrel Scheme of Strengthening.The utility model is to use the special-purpose member of design by the hollow shaft of pitch-controlled system, triangle flange, swivel bearing Three big components, which are fastenedly connected, to be integrated, and the relative motion between triangle flange and hollow shaft is avoided, effectively by blade pitch device In most weak hollow shaft with swivel bearing connect bolt suffered by alternating load be transferred to intensity be entirely capable of meeting the requirements it is hollow On axis, avoids and connect bolt between swivel bearing and hollow shaft because being broken by axial shearing force.The upgrading scheme can basis The actual outer dimensions and screw thread specification of different type of machines carry out corresponding change.

It takes place frequently for fan operation 10 years or so pitch-controlled system mechanical breakdowns, the case where decrease of power generation, this is practical new Blower availability had both can be improved in type, improved generated energy, and can also reduce pitch-controlled system mechanical breakdown reduces security risk.

The foregoing is merely the embodiments of the present invention, are not intended to limit the protection scope of the utility model.It is all Any modification, equivalent substitution and improvement made within spirit of the present utility model and principle, extension etc., are all contained in this reality With in novel protection scope.

Claims

1. a kind of fan paddle-changing system, which is characterized in that including triangle flange (2), swivel bearing flange (3), front fixation Blue (4), variable pitch bar (7), rear portion anchor ear (8) and hollow shaft (10), wherein triangle flange (2) is a tight fit in the outer of hollow shaft (10) Side, variable pitch bar (7) is inserted in hollow shaft (10) and front end is connect by bearing assembly with the hollow shaft (10), before described Portion's mounting flange (4) is set to the front end of the triangle flange (2) and connect with the triangle flange (2), the rear portion anchor ear (8) it is set to the rear end of the triangle flange (2) and holds tightly in the outside of the hollow shaft (10), the front mounting flange (4) it is connect with the rear portion anchor ear (8).

2. fan paddle-changing system according to claim 1, which is characterized in that the bearing assembly includes swivel bearing flange (3) and swivel bearing (5), the swivel bearing (5) be sheathed on the variable pitch bar (7) and with the swivel bearing flange (3) Connection, the swivel bearing flange (3) between the front mounting flange (4) and the triangle flange (2), and with it is described Hollow shaft (10) connection, the front mounting flange (4), the swivel bearing flange (3) and triangle flange (2) are connected as one Body.

3. fan paddle-changing system according to claim 1, which is characterized in that the rear portion anchor ear (8) is separate structure, packet Symmetrically arranged left half anchor ear and right half anchor ear are included, left half anchor ear and right half anchor ear include half-axile sleeve (81) and set It is placed in the annular convex platform (84) of the half-axile sleeve (81) end, wherein the two sides of half-axile sleeve (81) are equipped with ear mount (82), the left side Half anchor ear and right half anchor ear are connected by the ear mount (82) of two sides, the annular convex platform (84) and the front mounting flange (4) it connects.

4. fan paddle-changing system according to claim 3, which is characterized in that the annular convex platform (84) and the half-axile sleeve (81) axis is vertical, and the end face of the annular convex platform (84) is bonded with the side of the triangle flange (2) and by circumferentially The multiple bolts being arranged are fixedly connected.

5. fan paddle-changing system according to claim 1, which is characterized in that the front mounting flange (4) is triangle It structure and is connect at three angles with the rear portion anchor ear (8).