CN219035121U

CN219035121U - Hub convenient for replacing blades

Info

Publication number: CN219035121U
Application number: CN202320138272.2U
Authority: CN
Inventors: 郑泳良
Original assignee: Shanghai Erhuajie Electromechanical Equipment Manufacturing Co ltd
Current assignee: Shanghai Erhuajie Electromechanical Equipment Manufacturing Co ltd
Priority date: 2023-02-07
Filing date: 2023-02-07
Publication date: 2023-05-16
Anticipated expiration: 2033-02-07

Abstract

The utility model discloses a hub convenient for replacing blades, which comprises an upper clamping plate, a lower clamping plate and a shaft sleeve, wherein the upper clamping plate is fixedly connected with the lower clamping plate; the upper clamping plate comprises a central clamping plate and a plurality of connecting clamping plates connected with the central clamping plate; the center clamping plate and the lower clamping plate are fixed through the shaft sleeve, and fixing components for installing the blades are arranged between the connecting clamping plates and the lower clamping plate; the connecting splints are not connected with each other; the fixing assembly comprises a positioning seat and a bolt assembly, wherein the positioning seat is used for fixing the blade. The hub is provided with the upper clamping plate convenient to detach, when the blade is replaced, the blade can be lifted out in the vertical direction only by disassembling the connecting clamping plate and the fastening device corresponding to the blade after stopping, the connecting clamping plate is installed after a new blade is lifted in and is installed in the fixing assembly, the angle of the blade is adjusted, and the bolts are fastened, so that the labor and time cost is greatly reduced, the production efficiency is increased, and the safety risk is reduced.

Description

Hub convenient for replacing blades

Technical Field

The utility model relates to the field of production and manufacturing of cooling tower fans, in particular to a hub convenient for replacing blades.

Background

The cooling tower fan generally comprises parts such as an impeller, a speed reducer, a transmission shaft assembly, an oil circuit system, a motor and the like, wherein the motor provides power, the power is transmitted to the speed reducer through the transmission shaft, the impeller is driven to rotate after the speed is reduced, air is sucked from the lower part of the impeller, and then the air is blown vertically upwards through the impeller and flows through the inside of the air duct as cooling medium, so that the air duct medium is cooled. The impeller is a particularly key group of components in the system, and is assembled by a set of hub assembly and a set of blades, and the design of the hub relates to smooth running of the impeller, convenient maintenance and the like.

In the metallurgical and chemical industries, the working environment of the cooling tower is severe, the requirement on the performance of the fan is high, the loss of parts is relatively large, and the service life is relatively short, so that the cooling tower needs to be replaced or maintained regularly. In the industry, an impeller is arranged between two clamping plates through a fixed assembly by a group of blades, and the two clamping plates are fixed with a shaft sleeve and then arranged on an output shaft of a speed reducer; the impeller is assembled outside the cooling tower, and is integrally hoisted into the tower and mounted on the output shaft of the speed reducer. When the blades are required to be replaced after a period of operation, the upper clamping plate and the lower clamping plate are fixed on the shaft sleeve, and the blades are fixed between the two clamping plates, so the blades can only be disassembled in the horizontal direction, but only a gap of 25-30 mm is reserved between the impeller and the cooling tower wind barrel, and the space for horizontally disassembling the blades is insufficient, so the blades can not be disassembled and replaced in the tower, the whole impeller is required to be hoisted outside the tower, the fastening devices of the corresponding blades are loosened, the blades and the positioning seats are disassembled in the horizontal direction, the new blades are replaced, the new blades are reloaded between the upper clamping plate and the lower clamping plate together with the positioning seats, the fastening devices are fixed, and the angle of other blades is possibly changed due to integral hoisting, so the installation angles of all the blades are required to be adjusted, and finally the whole blades are hoisted into the tower for installation. The operation consumes a large amount of time and labor, other parts such as other blades can be damaged in the process, and even potential safety hazards can be brought. Therefore, a hub which is convenient to detach and replace the blades in the tower needs to be designed.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model aims to provide the hub with the upper clamping plate convenient to replace the blade, which is provided with the upper clamping plate convenient to detach, when the blade is replaced, the blade can be lifted out in the vertical direction only by disassembling the connecting clamping plate and the fastening device corresponding to the blade after stopping, the connecting clamping plate is installed after a new blade is lifted in and is installed in the fixing assembly, the angle of the blade is adjusted, the bolts are fastened, the labor and time cost is greatly reduced, the production efficiency is increased, and the safety risk is reduced.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a hub convenient for replacing blades, which comprises an upper clamping plate, a lower clamping plate and a shaft sleeve, wherein the upper clamping plate is arranged on the hub;

the upper clamping plate comprises a central clamping plate and a plurality of connecting clamping plates connected with the central clamping plate;

the center clamping plate and the lower clamping plate are fixed through the shaft sleeve, and fixing assemblies for installing blades are arranged between the connecting clamping plates and the lower clamping plate; the connecting splints are not connected with each other;

the fixing assembly comprises a positioning seat and a bolt assembly, wherein the positioning seat is used for fixing the blade.

Preferably, the center clamping plate of the upper clamping plate and the lower clamping plate are respectively provided with a vertical through hole used for being connected with the shaft sleeve.

Preferably, the plurality of connecting splints of the upper splint and the lower splint are respectively provided with a vertical through hole for connecting with the positioning seat.

Preferably, the number of the connection clips is equal to the number of the blades.

Preferably, the positioning seat comprises a lower positioning seat arranged on the lower clamping plate and an upper positioning seat arranged on the connecting plate; the lower positioning seat and the upper positioning seat are respectively provided with an arc groove matched with the blade handle of the blade.

The utility model has the following beneficial effects:

1. the hub convenient for replacing the blades has the advantage of being convenient for disassembling and assembling the blades in the tower; under the condition of severe environment in the cooling tower, the impeller is likely to be damaged after running for a period of time, and the connecting clamping plates of the hub are detachable, so that the blade can be lifted out in the vertical direction by disassembling the connecting clamping plates and the fastening devices which are needed to be replaced after the hub is stopped, and the connecting clamping plates are installed after new blades are lifted in and installed in the fixing assembly, and the angle of the blade is adjusted and bolts are fastened;

2. compared with the traditional hub with blades replaced, the hub convenient to replace the blades needs to be integrally hung in and out, saves a great amount of time and labor cost, and is more efficient, safer and more convenient.

Drawings

FIG. 1 is a schematic illustration of a hub of the present utility model for facilitating replacement of blades;

fig. 2 is a schematic structural view of the upper clamping plate of the present utility model.

Detailed Description

In order to better understand the above technical solution of the present utility model, the technical solution of the present utility model is further described below with reference to examples.

For the fields of metallurgy and chemical industry, the working environment of the cooling tower is severe, the requirements on the performance of the fan are high, the loss of the blades is relatively large, and the service life of the blades is relatively short, so that the blades are required to be replaced or maintained regularly. When the blade is replaced by the traditional hub, the impeller needs to be integrally hung in and out, the labor and time cost is high, and potential safety hazards exist. The industry traditional wheel hub comprises a shaft sleeve, an upper clamping plate, a lower clamping plate and a plurality of fixing components, wherein the upper clamping plate and the lower clamping plate are respectively arranged at the upper end and the lower end of the shaft sleeve through bolt components, the plurality of fixing components are arranged between the two clamping plates along the circumferential direction of the clamping plates, and a blade handle of a blade is clamped between two positioning seats of the fixing components.

Referring to fig. 1 and 2, the hub for facilitating blade replacement according to the present utility model comprises an upper clamping plate, a lower clamping plate 2 and a shaft sleeve 1; referring to fig. 2, the upper clamping plate is composed of a central clamping plate 3 and a plurality of connecting clamping plates 4 connected with the central clamping plate 3; the center clamping plate 3 and the lower clamping plate 2 are fixed through the shaft sleeve 1, and a fixing component for installing the blade 9 is arranged between the connecting clamping plates 4 and the lower clamping plate 2; the connecting splints 4 are not connected with each other; the fixing assembly comprises a positioning seat 5 for fixing the blade 9 and a bolt assembly 8. After the hub convenient for replacing the blade is adopted, when the blade is replaced, the blade can be lifted out in the vertical direction only by disassembling the connecting clamping plate and the fixing assembly which are needed to be replaced after the machine is stopped, the connecting clamping plate is arranged after a new blade is lifted in the fixing assembly, the angle of the blade is adjusted, and the bolts are fastened, so that the labor and time cost is greatly reduced, the production efficiency is increased, and the safety risk is reduced.

As shown in fig. 1 and 2, the central clamping plate 3 and the lower clamping plate 2 of the upper clamping plate are respectively provided with a vertical through hole for connecting with the shaft sleeve 1, and the central clamping plate 3 and the lower clamping plate 2 are fixed on the shaft sleeve 1 through a bolt component 6. Vertical through holes for connecting with the positioning seat 5 are formed in the connecting clamping plates 4 and the lower clamping plates 2 of the upper clamping plate, and the positioning seat 5 is fixed between the connecting clamping plates 4 and the lower clamping plates 2 through the bolt assemblies 8.

As shown in fig. 1 and 2, the number of the plurality of connecting clamping plates 4 mounted on the central clamping plate 3 is equal to the number of the blades 9, so that the blades can be conveniently dismounted in the tower, namely, when the blades 9 are replaced, only the connecting plates 4 corresponding to the blades 9 are required to be dismounted.

Referring to fig. 1, the positioning seat 5 includes a lower positioning seat provided on the lower clamping plate 2 and an upper positioning seat provided on the connecting plate 4; the lower positioning seat and the upper positioning seat are respectively provided with an arc groove matched with the blade handle of the blade 9.

In the impeller assembly process, as shown in connection with fig. 1, first, the center clamping plate 3 and the lower clamping plate 2 of the upper clamping plate are coupled to the shaft housing 1 by means of the bolt assembly 6. Each blade 9 is pre-connected with the lower clamping plate 2 and the connecting clamping plate 4 through a bolt assembly 8, an upper positioning seat and a lower positioning seat, and the connecting clamping plate 4 is connected with the central clamping plate 3 through a bolt assembly 7; after the angle and the position of each blade are adjusted, the bolt component 8 is fastened, wherein a gap of about 5mm is reserved between the end face of each blade 9 and the edge of the central clamping plate 3. According to the utility model, the blades can be quickly disassembled and assembled through the connecting clamping plates and the fixing components which are corresponding to the disassembly and assembly, and the disassembly and assembly processes can be carried out in the vertical direction, so that the operation can be smoothly carried out even if the blades are required to be replaced in the tower, and the whole impeller does not need to be lifted out of the tower.

Compared with the traditional hub with the detachable clamping plates, the hub with the blades convenient to replace, provided by the utility model, has the advantages that the upper clamping plates convenient to detach are adopted, the blades can be conveniently dismounted in the tower when the blades are required to be replaced, the blades can be easily taken out from the vertical direction only by detaching the connecting clamping plates and the fixing components corresponding to the blades, the new blades are convenient to install, the other blades and the fixing components are not affected, the labor cost and the time cost are greatly saved, and other damage and safety risks caused by the dismounting of the whole impeller are avoided, so that the smooth production is ensured.

It will be appreciated by persons skilled in the art that the above embodiments are provided for illustration only and not for limitation of the utility model, and that variations and modifications of the above described embodiments are intended to fall within the scope of the claims of the utility model as long as they fall within the true spirit of the utility model.

Claims

1. The hub is characterized by comprising an upper clamping plate, a lower clamping plate and a shaft sleeve, wherein the upper clamping plate is arranged on the lower clamping plate;

2. The hub for facilitating replacement of blades as recited in claim 1, wherein the center clamping plate of the upper clamping plate and the lower clamping plate are provided with vertical through holes for connection with the shaft sleeve.

3. The hub of claim 1, wherein the plurality of connecting clamping plates of the upper clamping plate and the lower clamping plate are provided with vertical through holes for connecting with the positioning seat.

4. The hub for facilitating replacement of blades as recited in claim 1, wherein the number of said attachment clips is equal to the number of said blades.

5. The hub for facilitating replacement of a blade according to claim 1, wherein the positioning seats comprise a lower positioning seat arranged on the lower clamping plate and an upper positioning seat arranged on the connecting plate; the lower positioning seat and the upper positioning seat are respectively provided with an arc groove matched with the blade handle of the blade.