CN203077197U - Tool for removing pulley and impeller - Google Patents

Abstract

A belt pulley and impeller dismounting tool belongs to the technical field of mechanical maintenance. The hand wheel is connected with one end of the jacking screw rod; the jacking screw rod is connected with the hand wheel through a positioning key, the middle part of the jacking screw rod is in threaded fit connection with the adjusting disc, and the other end of the jacking screw rod is a positioning cone with the taper of 90 degrees; the number of the pull rods is four, threads are arranged at one end of each pull rod, round steel bent for 180 degrees is arranged at the other end of each pull rod, and the other end of each pull rod is connected with an arc-shaped base; the adjusting disc is provided with sliding grooves, the four sliding grooves form a group, and the center lines of reference circles of the four sliding grooves are concentric with the center line of the jacking screw rod; the upper parallel gasket is connected with a pull rod on one side of the adjusting disc, and the lower parallel gasket is connected with the pull rod on the other side of the adjusting disc; the spare caps are respectively connected with one ends of the four pull rods. The utility model has the advantages that: can make things convenient for quick extract impeller, belt pulley from pneumatic motor, motor shaft, avoid causing the damage to key parts such as pneumatic motor, motor shaft, improve work efficiency simultaneously.

Description

Tool for removing pulley and impeller

technical field

The utility model relates to a pulley and impeller dismantling tool, which belongs to the technical field of mechanical maintenance.

Background technique

At the current oil and gas field site, the start-up of the natural gas engine compressor unit is started by an air motor. The impeller of the air motor is a vulnerable part. With the accumulation of starting times, the impeller will wear out, and the impeller must be inspected, repaired and replaced. Due to the small space and clearance, it is difficult to disassemble every time. The common disassembly method in the field is to use tools to pry off the impeller. It is easy to pry the impeller off, making the disassembly work more difficult and causing other damage to the air motor.

There are many kinds of maintenance (first guarantee, second guarantee) and repair motors in the oil and gas field, and the pulley needs to be pulled out to perform normal maintenance. The pulling force jack is often used for operations on site, but different specifications of the pulling jack are required for different motors. The applicable occasions of the tension jack are very limited, and it is often necessary to carry multiple specifications of the tension jack for maintenance, especially for field emergency repair work, which is extremely unfavorable for convenient and fast operation and affects work efficiency.

Contents of the invention

In order to overcome the deficiencies of the prior art, the utility model provides a belt pulley and impeller removal tool.

A pulley and impeller removal tool, including a hand wheel, a top tightening screw, an adjusting disc, a pull rod, a base, a positioning cone, a lower parallel gasket, an upper parallel gasket, a spare cap, and a sliding groove;

The handwheel is connected to one end of the tightening screw;

The tightening screw is connected with the handwheel through the positioning key, the middle part of the tightening screw is connected with the adjusting disc through threads, and the other end of the tightening screw is a positioning cone with a taper of 90 degrees;

There are four pull rods, one end of the pull rod is threaded, the other end of the pull rod is a round steel bent 180 degrees, and the other end of the pull rod is connected to the arc-shaped base;

There are sliding grooves on the adjustment disc, four sliding grooves form a group, and the center line of the indexing circle of the four sliding grooves is concentric with the center line of the tightening screw;

The upper parallel spacer is connected to the tie rod on one side of the adjustment disc, and the lower parallel spacer is connected to the tie rod on the other side of the adjustment disc;

The spare caps are respectively connected to one end of the four pull rods.

The utility model has the advantages that the impeller and the belt pulley can be conveniently and quickly pulled out from the air motor and the motor shaft, so as to avoid damage to key components such as the air motor and the motor shaft, and at the same time improve work efficiency.

It is suitable for the disassembly of impellers and pulleys of different specifications; the diameter and length of the impellers and pulleys can be adjusted on site; when affected by space and angle, the gap and position can be adjusted at will; to reduce the carrying load, one set of disassembly tools is equivalent to multiple sets Tensile force; simple structure, easy operation; maximizing work efficiency and ensuring the smooth operation of the unit and process equipment.

Description of drawings

A more complete and better understanding of the invention, and many of its attendant advantages, will be readily appreciated by reference to the following detailed description when considered in conjunction with the accompanying drawings, but the accompanying drawings illustrated herein are intended to provide a further understanding of the invention , constituting a part of the utility model, the schematic embodiment of the utility model and its description are used to explain the utility model, and do not constitute an improper limitation of the utility model, as shown in the figure:

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a structural schematic diagram of the utility model.

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Detailed ways

Obviously, many modifications and changes made by those skilled in the art based on the gist of the utility model belong to the protection scope of the utility model.

Embodiment 1: as shown in Figure 1 and Figure 2,

A belt pulley and impeller removal tool includes a hand wheel, a tightening screw, an adjusting disk, a pull rod, a base, a positioning cone, a lower parallel gasket, an upper parallel gasket, a spare cap, and a sliding groove.

Handwheel 1 is connected to one end of jacking screw 2;

The length of the jacking screw 2 is 500 mm, one end is a buckle thread, the thread specification is M20, and the handwheel is connected through a positioning key, the middle part is connected with the adjusting disc 3 through thread fit, and the other end is a positioning cone 6 with a taper of 90 degrees. to concentricity and positioning;

The tie rod 4 is made of four 450mm in length and 20mm in diameter. One end has an M8 thread, and the other end is made of round steel bent 180 degrees. shaft fit;

The adjusting disc 3 in the middle is round steel with a diameter of 200 mm and a thickness of 20 mm; the adjusting disc 3 is provided with sliding grooves 10, and the four sliding grooves 10 form a group. The center line of the tightening screw 2 is concentric, and the slot hole corresponding to the diameter of the sliding groove 10 can be selected according to the diameter of the on-site impeller and pulley; the utility model is that three groups of sliding grooves are distributed on the adjusting disc 3;

The upper parallel spacer 8 is connected to the pull rod 4 on one side of the adjustment disc 3, and the lower parallel spacer 7 is connected to the tie rod 4 on the other side of the adjustment disc 3;

The upper parallel gasket 8 and the lower parallel gasket 7 play the role of parallel positioning to prevent sliding;

The threads of the spare cap 9 are M8 and are respectively connected to one end of the four pull rods 4, and cooperate with the pull rods 4 to rotate clockwise, so that the pull rods 4 are tightened.

The process of using a belt pulley and impeller removal tool: Refer to Figure 1 and Figure 2, tighten the hand wheel 1 on the jacking screw 2 (there is a positioning key inside), and screw the jacking screw 2 into the center of the adjustment disc 3 Thread, the screw-in depth is selected according to the location of the pulley or impeller;

Select the corresponding sliding groove 10 according to the diameter of the pulley or impeller, put the lower parallel spacers 7 on the four tie rods 4 respectively, put the four tie rods 4 into the selected sliding groove 10, and then put the upper parallel spacers 8 on them respectively On the four pull rods 4, screw the spare cap 9 clockwise into the four pull rods 4 respectively, move the four pull rods 4 with the base 5, put them into the rear end of the pulley or impeller to be disassembled, and adjust the base 5 so that The arc of the base coincides with the outer diameter of the removed shaft; screw in the tightening screw 2 clockwise so that the positioning cone 6 of the tightening screw 2 contacts the center of the removed pulley or impeller shaft; screw in the spare cap 9 clockwise Tension the four pull rods 4 respectively; rotate the hand wheel 1 clockwise, that is, drive the positioning cone 6 of the tightening screw 2 to press the pulley or the motor shaft, so that the pulley or impeller is pulled out by the four pull rods 4 under the reverse pulling force, Rotate the hand wheel 1 counterclockwise to make the positioning cone 6 of the tightening screw 2 away from the motor shaft to a certain position, then remove the air motor impeller from the belt pulley and the special tool for removing the impeller, and then perform normal maintenance and replacement operations.

Disassemble the special tools for pulley and impeller removal one by one, which is easy to carry and prepare for the next use.

As mentioned above, the embodiment of the present invention has been described in detail, but it is obvious to those skilled in the art that many modifications can be made as long as the inventive points and effects of the present invention are not substantially deviated from. Therefore, such modified examples are all included in the protection scope of the present invention.

Claims (3)

1. A belt pulley and impeller removal tool, characterized in that it comprises a hand wheel, a top tightening screw, an adjustment disc, a pull rod, a base, a positioning cone, a lower parallel gasket, an upper parallel gasket, a spare cap, and a slide groove; The handwheel is connected to one end of the tightening screw; The tightening screw is connected with the handwheel through the positioning key, the middle part of the tightening screw is connected with the adjusting disc through threads, and the other end of the tightening screw is a positioning cone with a taper of 90 degrees; There are four pull rods, one end of the pull rod is threaded, the other end of the pull rod is a round steel bent 180 degrees, and the other end of the pull rod is connected to the arc-shaped base; There are sliding grooves on the adjustment disc, four sliding grooves form a group, and the center line of the indexing circle of the four sliding grooves is concentric with the center line of the tightening screw; The upper parallel spacer is connected to the tie rod on one side of the adjustment disc, and the lower parallel spacer is connected to the tie rod on the other side of the adjustment disc; The spare caps are respectively connected to one end of the four pull rods. 2. A pulley and impeller removal tool according to claim 1, characterized in that the length of the tightening screw is 500 mm, one end is a buckle thread, and the thread specification is M20; The length of the tie rod is 450mm, the diameter of the tie rod is 20mm, and one end of the tie rod has M8 thread; Adjust the disc to be round steel with a diameter of 200mm and a thickness of 20mm; The thread of the spare cap is M8. 3. A pulley and impeller removal tool according to claim 1 or 2, characterized in that three sets of sliding grooves are distributed on the adjusting disk.

Images