CN217513792U

CN217513792U - Tool for pulling impeller

Info

Publication number: CN217513792U
Application number: CN202220775006.6U
Authority: CN
Inventors: 张晨曦; 刘文武; 杨振; 王仪杭; 吴可
Original assignee: Huaneng Luoyuan Power Generation Co Ltd
Current assignee: Huaneng Luoyuan Power Generation Co Ltd
Priority date: 2022-04-02
Filing date: 2022-04-02
Publication date: 2022-09-30
Anticipated expiration: 2032-04-02

Abstract

The utility model discloses an impeller pulling tool in the technical field of a puller tool, which comprises a middle sleeve, wherein the middle part of the middle sleeve is vertically perforated and welded with a fixed nut, the inner cavity of the fixed nut is screwed with a jacking screw rod penetrating through the middle sleeve, two ends of the middle sleeve are telescopically sleeved with extension rods, the outer ends of the extension rods are rotationally connected with lantern rings through first pins, one side wall of each lantern ring is respectively provided with a clamping jaw, and the other side wall is rotationally connected with a fixed screw rod. The impeller is convenient and simple in the process of pulling the impeller, the clamping jaws or the screws can be selected for fixation according to the size and the installation clearance of the impeller, the device has the advantages of being strong in operability, reducing the workload of pulling the impeller, avoiding risks caused by firing operation, improving the working efficiency and shortening the standby time for withdrawing the device.

Description

Tool for pulling impeller

Technical Field

The utility model relates to a draw horse instrument technical field specifically is an instrument of pulling out impeller.

Background

In an electric power system, there are a number of electric motors connected to an impeller via a coupling. When the motor runs for a certain period, the bearing needs to be replaced. At the moment, the driving end is connected with the impeller, so that the impeller needs to be pulled out firstly during replacement. This involves a problem in that prying or bar rolling is required, and this takes a long time and, if necessary, a firing operation is required. As is known, the fire operation is a dangerous work with explosion threat, and the distance between oxygen and acetylene is required to be controlled, the distance is not less than 10 meters, and a large place is required to be occupied. In addition, some types of fans also involve a problem that the fans are operated and standby, and if one fan fails, the requirement on the maintenance efficiency is high, the maintenance time is required to be shortened as much as possible, and the threat on the safe and stable operation of the system is great because the fan is prolonged to exit from the standby time. At this time, we need to try to pull out the impeller in the shortest time on the premise of not damaging the impeller, and solve the problem.

Based on this, the utility model designs a pull out instrument of impeller to solve above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pull out instrument of impeller to solve above-mentioned technical problem.

In order to realize the purpose, the utility model provides the following technical scheme: the utility model provides a pull out instrument of impeller, includes and puts the sleeve pipe in, put perpendicular trompil in the middle part of sleeve pipe and welded a fixation nut, the spiro union of fixation nut inner chamber has a roof pressure screw rod that runs through put the sleeve pipe in, the scalable extension rod that has cup jointed in put the both ends of sleeve pipe, the outside end of extension rod is rotated through first pin and is connected with the lantern ring, a lateral wall of the lantern ring is provided with the jack catch respectively, another lateral wall rotates and is connected with fixation screw.

Preferably, an extension spring is arranged in the inner cavity of the middle sleeve, and two ends of the extension spring are respectively connected with the inner side ends of the extension rods on two sides.

Preferably, two side walls of the end part of the middle sleeve pipe are provided with limiting sliding grooves along the length direction, two side walls of the inner side end of the extension rod are fixedly provided with limiting sliding pins, and the limiting sliding pins are movably embedded in the limiting sliding grooves.

Preferably, a C-shaped connecting block is fixed at the connecting end of the fixing screw and is rotatably connected with the lantern ring through a second pin.

Preferably, one end of the jacking screw is provided with a wrench clamping force application part, and the other end of the jacking screw is a jacking shaft conical head.

Compared with the prior art, utility model's beneficial effect does:

centrifugal fan pull out impeller instrument simple structure, convenient to use, easy operation, efficient. The impeller pulling process is convenient and simple, the clamping jaws or the screw rods can be selected and used for fixing according to the size of the impeller and the installation clearance, the operability is strong, the impeller pulling workload is reduced, the risk caused by fire operation is avoided, meanwhile, the working efficiency is improved, and the equipment withdrawal standby time is shortened.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive work.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the fixing state of the screw rod of the present invention;

fig. 3 is a schematic view of the fixing state of the clamping jaws.

In the drawings, the components represented by the respective reference numerals are listed below:

1-middle sleeve, 2-fixed nut, 3-top pressure screw, 4-extension rod, 5-lantern ring, 6-claw, 7-fixed screw, 8-extension spring, 9-limit chute, 10-limit sliding pin, 11-C-shaped connecting block, 12-second pin, 13-wrench clamping force application part, 14-top shaft conical head and 15-first pin.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by a person skilled in the art without any inventive work based on the embodiments of the present invention belong to the protection scope of the present invention.

Referring to fig. 1, the utility model provides a technical solution: a tool for pulling out an impeller comprises a middle sleeve 1, a fixed nut 2 is vertically perforated in the middle of the middle sleeve 1 and welded, a jacking screw rod 3 penetrating through the middle sleeve 1 is screwed in the inner cavity of the fixed nut 2, a wrench clamping force application part 13 is arranged at one end of the jacking screw rod 3, a jacking shaft conical head 14 is arranged at the other end of the jacking screw rod 3, extension rods 4 are telescopically sleeved at two ends of the middle sleeve 1, an extension spring 8 is arranged in the inner cavity of the middle sleeve 1 and used for automatically contracting and resetting the extension rods 4 at two ends when the middle sleeve is idle, the extension springs 8 are provided with two parts and respectively penetrate through gaps between two sides of the jacking screw rod 3 and the inner wall of the middle sleeve 1, limit sliding grooves 9 are formed in two side walls of the end part of the middle sleeve 1 along the length direction, limit sliding pins 10 are fixedly arranged on two side walls of the inner side end part of the extension rod 4, the limit sliding pins 10 are movably embedded in the limit sliding grooves 9 and used for preventing the extension rods 4 from being separated from the middle sleeve 1, extension spring 8's both ends are connected with 4 medial extremity of both sides extension rod respectively, extension rod 4's outside end rotates through first pin 15 and is connected with lantern ring 5, a lateral wall of lantern ring 5 is provided with jack catch 6 respectively, another lateral wall rotates and is connected with clamping screw 7, clamping screw 7's link is fixed with C shape connecting block 11, C shape connecting block 11 rotates through second pin 12 and lantern ring 5 to be connected, through rotating lantern ring 5, changeable jack catch 6 or clamping screw 7 are connected fixedly towards the front end and impeller.

Working principle embodiment:

as shown in fig. 2, when the inner end surface of the fan impeller and the motor end surface have a sufficient mounting gap and the length of the clamping jaw 6 is not less than the thickness of the impeller, the clamping jaw 6 can be used for connection, at this time, the lantern ring 5 is rotated to face the clamping jaws 6 at the two sides to the front end, the extension rods 4 at the two sides are pulled out and opened, the front buckles of the clamping jaw 6 are buckled on the edge of the inner end surface of the impeller, the jacking screw rod 3 is adjusted to align the front end of the jacking screw rod with the end of the motor shaft, the wrench at the rear end of the jacking screw rod 3 is rotated by the wrench to clamp the force application part 13, and the jacking screw rod 3 performs jacking action to make the impeller and the motor shaft relatively dislocate, so that the impeller is detached from the motor shaft.

As shown in fig. 3, when the installation gap between the inner end surface of the fan impeller and the end surface of the motor is small, or the length of the claw 6 is smaller than the thickness of the impeller, the fixing screws 7 can be used for connection, at this time, the lantern ring 5 is rotated to face the fixing screws 7 on both sides to the front end, the extension rods 4 on both sides are pulled out and opened, the fixing screws 7 on both sides are respectively screwed with screw holes on the outer end surface of the impeller (screw holes can be processed without screw holes), the jacking screw 3 is adjusted to align the front end of the jacking screw to the end of the motor shaft, the wrench at the rear end of the jacking screw 3 is rotated by the wrench to clamp the force application part 13, and the jacking screw 3 is used for jacking to relatively dislocate the impeller and the motor shaft, so that the impeller is detached from the motor shaft.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as a fixed connection, a detachable connection, or an integral part; can be mechanically or electrically connected; the term "connected" may refer to a direct connection, an indirect connection through an intermediate, a connection between two elements or an interaction relationship between two elements, and unless otherwise specifically defined, the term should be understood as having a specific meaning in the present application by those skilled in the art.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A tool for pulling an impeller is characterized in that: the middle part of the middle sleeve (1) is vertically perforated and welded with a fixing nut (2), the inner cavity of the fixing nut (2) is in threaded connection with a jacking screw (3) which penetrates through the middle sleeve (1), two ends of the middle sleeve (1) are telescopically sleeved with extension rods (4), the outer ends of the extension rods (4) are rotatably connected with lantern rings (5) through first pins (15), and one side wall of each lantern ring (5) is provided with clamping claws (6) respectively, and the other side wall of each lantern ring (5) is rotatably connected with a fixing screw (7).

2. The tool for extracting an impeller of claim 1, wherein: an extension spring (8) is arranged in the inner cavity of the middle sleeve (1), and two ends of the extension spring (8) are respectively connected with the inner side ends of the extension rods (4) on two sides.

3. A tool for drawing an impeller in accordance with claim 1, wherein: two side walls of the end part of the middle sleeve (1) are provided with limiting sliding grooves (9) along the length direction, two side walls of the inner side end of the extension rod (4) are fixedly provided with limiting sliding pins (10), and the limiting sliding pins (10) are movably embedded in the limiting sliding grooves (9).

4. A tool for drawing an impeller in accordance with claim 1, wherein: the connecting end of the fixing screw rod (7) is fixed with a C-shaped connecting block (11), and the C-shaped connecting block (11) is rotatably connected with the lantern ring (5) through a second pin (12).

5. The tool for extracting an impeller of claim 1, wherein: one end of the jacking screw rod (3) is provided with a wrench clamping force application part (13), and the other end is a jacking shaft conical head part (14).