Drum type filter screen pinion on-line replacing device

Abstract

The invention belongs to the technical field of online replacement of gears, and particularly relates to an online replacement device for a drum type filter screen pinion. Comprising a shell and a base which are arranged on the ground surface, a climbing frame is fixedly connected with the shell and the base, a protection disc is arranged on a loading disc, a motor is arranged on a supporting shaft, the loading disc is installed in the shell and the base in a sliding mode, a bearing inner ring is fixedly connected with a fixing block, one end of a screw rod is fixedly connected with the supporting shaft, and the other end of the screw rod is connected with a gear disc in a sliding mode. One end of the fixing block is slidably installed on the installation guide rail, the other end of the fixing block is connected with the screw rod in a matched mode, one end of the installation guide rail is fixedly installed on the gear disc, the other end of the installation guide rail is freely suspended, an embedding groove and a positioning installation groove are formed in the loading disc, the supporting shaft is arranged on the loading disc, and the auxiliary installation ball is a fixing structure of the free end of the installation guide rail. The gear dismounting and mounting device has the beneficial effects that the screw rod is matched to dismount and mount the gear, a relatively stable advancing process is provided, and the feasibility of dismounting and mounting is ensured.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of gear online replacement, and particularly relates to a drum filter screen pinion online replacement device. BACKGROUND

[0002] The drum-shaped rotary filter screen is the core equipment of the seawater filtering system of a nuclear power plant and the water filtering system of other industries, and mainly comprises a driving device, a main shaft, a drum-shaped framework, a sealing system, a lubricating and flushing device, and an automatic control part. The driving gear of the drum-shaped rotary filter screen is an open gear transmission. Since the content of silt is high in the working condition of some nuclear power plants, sand particles exist on the contact tooth surface when meshing. With the mutual meshing of the gears, the tooth surface will be severely worn, and the running cycle of the nuclear power plant cannot be met.

[0003] Since the gear material and use requirements of the transmission device cause the gear to be easily worn, the gear needs to be replaced regularly. At present, when the driving gear is replaced, the drum-shaped rotary filter screen needs to be stopped for more than several hours, and since the gear is very heavy, the replacement efficiency is low by using the related mechanical and manual replacement mode, and the process of replacing the driving gear is time-consuming and laborious.

[0004] Therefore, the existing gear replacement method needs to be improved, and a drum filter screen gear online and quick replacement device needs to be developed urgently. SUMMARY

[0005] The purpose of the present application is to provide a drum filter screen pinion online replacement device, which can be used for online and quick replacement and installation of the driving device of the drum-shaped rotary filter screen in the nuclear power plant during operation, and solves the problem of slow replacement and installation process of the driving gear of the existing drum-shaped rotary filter screen.

[0006] The technical scheme of the present application is as follows: a drum filter screen pinion online replacement device, comprising a shell and base, a protection disc, a motor, a loading disc, a climbing frame, a bearing, a screw rod, a fixed block, an installation guide rail, a support shaft and auxiliary installation balls; the shell and base are arranged on the ground surface, the climbing frame is fixedly connected with the shell and base, the protection disc is arranged on the loading disc, the motor is arranged above the support shaft and provides driving force for rotation of the screw rod, the loading disc is slidingly installed in the shell and base and can rotate around the axis in the shell and base, the inner ring of the bearing is fixedly connected with the fixed block, one end of the screw rod is fixedly connected with the support shaft, and the other end is slidingly connected with the gear disc, one end of the fixed block is slidingly installed on the installation guide rail, and the other end is connected with the screw rod, one end of the installation guide rail is fixedly installed on the gear disc, and the other end is freely suspended, the loading disc is provided with an embedding groove and a positioning installation groove, the support shaft is arranged above the loading disc, and the auxiliary installation balls are the fixing structure of the free end of the installation guide rail.

[0007] The protection disc is welded and fixed on the loading disc.

[0008] When the dismounting and replacing operation is performed, the axis of the protection disc is respectively collinear with the axis of the mounting guide rail.

[0009] The axis of the loading disc is collinear with the axis of the gear disc.

[0010] One end of the fixing block is slidingly mounted on the mounting guide rail, and the other end is connected with the screw rod through screwing.

[0011] The support shaft is arranged above the loading disc, and the axis of the support shaft is collinear with the axis of the loading disc.

[0012] The shell and the base are fixed or embedded in the ground surface.

[0013] The beneficial effects of the present application are as follows: the screw rod in the present application cooperates with the gear dismounting and mounting, provides a relatively stable running process, and ensures the feasibility of dismounting and mounting; the device can replace the gear during the operation of the driving device; the device disperses the load through the screw rod rigid connection, and shares part of the load borne by the driving gear and the motor structure; the device adopts the way of adding a ball at the end of the mounting guide rail, which improves the installation error range of the device during gear installation; the device is loaded with a protection disc to prevent the driving gear from falling off after dismounting or during installation; the device adopts the structure of a positioning installation groove, which facilitates personnel to replace the gear without deliberately aligning the relative position, and improves the convenience; the device adopts physical and mechanical transmission, and has a compact structure and is not easy to deform; the device is loaded with a climbing frame device, which facilitates the operation of the operator. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a whole view (front) of the drum-type filter screen pinion gear online replacement device provided by the present application; Figure 2 It is a whole view (back) of the drum-type filter screen pinion gear online replacement device provided by the present application.

[0015] In the figure: 1, shell and base; 2, protection disc; 3, motor; 4, loading disc; 5, climbing frame; 6, bearing; 7, screw rod; 8, fixing block; 9, mounting guide rail; 10, fixing block embedding groove; 11, support shaft; 12, positioning installation groove; 13, auxiliary installation ball. DETAILED DESCRIPTION

[0016] The present application will be further described in detail below in combination with the drawings and specific embodiments.

[0017] In order to solve the technical problem of low efficiency of replacing the driving gear of the drum-shaped rotating filter screen in a nuclear power plant, the present application provides a drum-shaped filter screen pinion gear online replacement device, which is first matched with the gear driving device. In this process, the driving gear operation is not affected, the process is fast and convenient, the structure is efficient and stable, and the risk is low. The related problems in the replacement and installation process of the drum-shaped filter screen driving gear are solved.

[0018] The main body of the present application adopts a mechanical system, which drives the rotation of the rear installation bin by rotating the gear disc in the control transmission device, thereby realizing accurate control of the installation position of the gear.

[0019] In order to remove the gear during operation, for the driving gear, first ensure that the other driving gear in operation remains in operation during replacement. Therefore, two independent fixing and dismounting mechanisms are used for the two driving gears that can replace each other. In order to accurately position the installed driving gear during installation and make installation convenient, the horizontal position of the positioning installation groove and the driving gear is accurately positioned, so that the positioning installation groove can move position with the rotation of the gear disc in the service life extension device. Therefore, the positioning installation groove is designed on a disc and is connected with the gear disc, so as to ensure that the positioning installation groove can rotate with the gear disc.

[0020] Due to the large load applied to the drum-shaped filter screen, most of the related structures not subjected to load adopt a hollow structure to reduce the weight and thereby reduce the load on the stressed components as much as possible. In order to make the replaced gear reach the specified position, the screw rod mechanism drives the fixed block, the electric drive advances, pushes the driving gear to the specified position, and uses bearings to connect between the driving gear and the fixed block to prevent power transmission to the fixed block and the related mechanism behind it. At the same time, the external ladder and the internal opening are used to ensure the stability of the structure and the convenience of the operator's operation, and to provide a related storage platform.

[0021] The features of the present application are as follows: The screw rod of the device cooperates with the gear removal and installation method. The device can replace the gear during operation of the driving device; The screw rod of the device is designed to disperse the load method, which shares part of the load borne by the driving gear and the motor structure; The end of the installation guide rail of the device is equipped with a ball, which improves the installation error range of the device during gear installation; The device is designed to be loaded with a protective disc to prevent the driving gear from falling off during dismounting or installation; The structure of the positioning installation groove of the device facilitates personnel to replace the gear without deliberately aligning the relative position, thereby improving the convenience.

[0022] like Figure 1 and 2 As shown, an online replacement device for a drum-shaped filter screen pinion includes a housing and base 1, a protective disc 2, a motor 3, a loading disc 4, a climbing frame 5, a bearing 6, a screw rod 7, a fixing block 8, a mounting rail 9, a fixing block embedding groove 10, a support shaft 11, a positioning mounting groove 12, and auxiliary mounting balls 13. The housing and base 1 are fixed or embedded in the ground surface. The loading disc 4 is mounted on the housing and base 1, which is fixed to the ground. The climbing frame 5 is fixedly connected to the housing and base 1. The protective disc 2 is welded and fixed to the loading disc 4. During removal and replacement operations, the axis of the protective disc 2 is collinear with the axis of the mounting rail 9. The motor 3 is fixedly mounted on the support shaft 11 and provides driving force for the rotation of the screw rod 7. The loading disc 4 is slidably mounted inside the housing and base 1 and can rotate around its axis inside the housing and base 1. The axis of the loading disc 4 is collinear with the axis of the gear disc. The inner ring of bearing 6 is fixedly connected to the fixing block 8, and the outer ring is movably connected to the surface of the drive gear using a snap-fit ​​connection. One end of the helical rod 7 is fixedly connected to the support shaft 11, and the other end is slidably connected to the gear disk. One end of the fixing block 8 is slidably mounted on the mounting guide rail 9, and the other end is connected to the helical rod 7 via a thread. One end of the mounting guide rail 9 is fixedly mounted on the gear disk, and the other end is freely suspended. The fixing block embedding groove 10 is a fixing structure on the loading disc 4. When the fixing block 8 is detached from the mounting guide rail 9, it can provide limiting support for the fixing block 8, ensuring the stability of the fixing block 8 after detachment from the mounting guide rail 9. The support shaft 11 is fixedly mounted on the loading disc 4, and its axis is collinear with the axis of the loading disc 4. The positioning mounting groove 12 is a fixing structure on the loading disc 4. During the disassembly and installation of the gear, it can provide support for the gear and assist in the gear's alignment with the shaft. The auxiliary mounting ball 13 is a fixing structure at the free end of the mounting guide rail. Its rounded corner design facilitates the installation of the gear onto the mounting guide rail 9.

[0023] The working principle of this invention is as follows: The screw rod 7 is used in conjunction with the fixed block 8, such as... Figure 1 As shown, the inner surface thread of the fixing block 8 is engaged with the outer surface thread of the screw rod 7. The fixing block 8 is also engaged with the mounting guide rail 9. The screw rod 7 is rotated by the motor 3. Due to the screw engagement, the fixing block 8 can move horizontally along the mounting guide rail 9.

[0024] The fixing block 8 is also rigidly connected to the inner ring of the bearing 6, and the outer ring of the bearing 6 is connected to the surface of the drive gear by a snap-fit ​​connection. This ensures that the drive gear will not transmit rotational force to the fixing block 8 and the related structures behind it after reaching the designated position. The snap-fit ​​connection also ensures that it is easy to remove and install.

[0025] The fixing block embedding groove 10 ensures that the fixing block 8 and the gear can maintain horizontal movement after being separated from the mounting guide rail 9. The auxiliary mounting ball 13 at the end of the mounting guide rail 9 ensures that when the gear is installed, there will be no phenomenon where the mounting guide rail 9 cannot cooperate with the fixing block 8 and the gear due to installation errors.

[0026] The outer casing and base 1 are fixed or embedded in the ground surface to ensure structural stability and also bear part of the load. The protective disc 2 prevents the drive gear from falling off after removal or during installation, and also serves a positioning function. The disc and gear are coaxial, facilitating installation. The loading disc 4 is rigidly connected to the gear disc by a helical rod 7 and rotates with the gear disc. An external climbing frame 5 is also mounted to facilitate related operations by operators. The support shaft 11 pneumatically loads the motor and bears the load. The positioning mounting groove 12 provides a working surface for the disassembly and installation of the gear.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications to the technical solutions described in the foregoing embodiments, or equivalent substitutions for some or all of the technical features, do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A drum-type screen small gear replacement device, characterized by: The utility model relates to a kind of loading disc device, including shell and pedestal, protective disc, motor, loading disc, climbing frame, bearing, screw rod, fixed block, installation guide rail, support shaft and auxiliary installation ball;The shell and pedestal are arranged on ground surface, climbing frame is fixedly connected with shell and pedestal, protective disc is arranged on loading disc, motor is arranged on support shaft, and driving force is provided for the rotation of screw rod, loading disc is slidably installed in shell and pedestal, can rotate around axis in shell and pedestal, inner ring of bearing is fixedly connected with fixed block, one end of screw rod is fixedly connected with support shaft, the other end is slidably connected with gear disc, one end of fixed block is slidably installed on installation guide rail, the other end is connected with screw rod, one end of installation guide rail is fixedly installed on gear disc, the other end is freely suspended, embedding slot and positioning installation slot are opened on loading disc, support shaft is arranged on loading disc, and auxiliary installation ball is the fixed structure of the free end of installation guide rail.

2. A drum screen pinion replacement device as claimed in claim 1, characterized in that: The protective disc is welded and fixed on the loading disc.

3. A drum screen pinion replacement device as claimed in claim 1, characterized in that: When carrying out dismantling and replacing operation, the axis of the protective disc is respectively collinear with the axis of the installation guide rail.

4. A drum screen pinion replacement device as claimed in claim 1, characterized in that: The axis of the loading disc is collinear with the axis of the gear disc.

5. A drum screen pinion replacement device as claimed in claim 1, wherein: One end of the fixed block is slidably installed on the installation guide rail, and the other end is connected with the screw rod through thread.

6. A drum screen pinion replacement device as claimed in claim 1, wherein: The support shaft is arranged on the loading disc, and the axis thereof is collinear with the axis of the loading disc.

7. A drum screen pinion replacement device as claimed in claim 1, wherein: The shell and pedestal are fixed or embedded in the ground surface.

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