A device suitable for adjusting the clearance of the inner sleeve of the lower bearing of the main pump motor

Abstract

The present invention is a device suitable for adjusting the clearance of the inner sleeve of the lower bearing of the main pump motor, and relates to the technical field of main pump maintenance. The present invention comprises an installation slide, a sliding support arm, a limit block, a leveling screw, and a fixing bolt; the installation slide is fixed to the bottom of the lower bearing housing of the main pump motor, and a sliding support arm is installed in the installation slide, and the sliding support arm can slide along the sliding groove; the outer end of the sliding support arm is connected to the limit block to limit the sliding support arm; the inner end of the sliding support arm is installed with a leveling screw, which is fixed to the bottom of the inner sleeve of the lower bearing of the main pump motor, and the horizontality of the inner sleeve of the lower bearing of the main pump motor is adjusted by adjusting the leveling screw. The present invention is used to fix, support and quickly level the inner sleeve of the lower bearing of the main pump motor, and has the characteristics of easy operation and good uniformity of the clearance between the inner sleeve and the motor shaft after adjustment, which ensures the smooth implementation of the main pump motor disassembly inspection and equipment defect handling work at the nuclear power site.

Description

Technical Field

[0001] The invention relates to the technical field of main pump maintenance, and in particular to a device suitable for adjusting the inner sleeve clearance of a lower bearing of a main pump motor. Background Art

[0002] During the preventive disassembly inspection of the main pump motor and the on-site treatment of the insulation defects of the main pump motor shaft, it is necessary to adjust and measure the gap between the inner sleeve of the main pump motor lower bearing and the main pump motor shaft to ensure that the equipment installation and reset meet the requirements. Under the existing conditions, the adjustment and measurement of the gap between the inner sleeve of the main pump motor lower bearing and the main pump motor shaft rely on manual assistance. The adjustment process is time-consuming and labor-intensive, and the uniformity of the gap between the inner sleeve and the motor shaft after adjustment is poor. Summary of the invention

[0003] The present invention provides a device suitable for adjusting the clearance of the inner sleeve of the lower bearing of the main pump motor. When the main pump is overhauled, a simple and convenient on-site installation method is adopted to quickly level the inner sleeve of the lower bearing of the main pump motor through leveling screws, so as to measure the clearance between the inner sleeve and the lower bearing of the main pump motor.

[0004] The technical solution of the present invention is:

[0005] A device suitable for adjusting the clearance of the inner sleeve of the lower bearing of the main pump motor, comprising a mounting slide, a sliding support arm, a limit block, a leveling screw, and a fixing bolt;

[0006] The mounting slide is a symmetrical structure, including an arc-shaped support plate and a radial sliding groove. The curvature of the support plate is the same as the curvature of the lower bearing housing of the main pump motor. Both ends of the support plate are provided with fixing bolts that will not come out, fixing the mounting slide to the bottom of the lower bearing housing of the main pump motor.

[0007] A sliding support arm is installed in the sliding groove, and the sliding support arm can slide along the sliding groove; one end of the outer side of the sliding support arm is fixedly connected to the limit block to prevent the sliding support arm from sliding out of the mounting slide and limit the sliding support arm; a screw that can tighten the sliding support arm in the mounting slide is installed on the side wall of the mounting slide to position the sliding support arm; a leveling screw is installed at one end of the inner side of the sliding support arm, which is fixedly connected to the bottom of the inner sleeve of the lower bearing of the main pump motor, and the horizontality of the inner sleeve of the lower bearing of the main pump motor is adjusted by adjusting the leveling screw.

[0008] Also included is a hexagonal thin nut that is mounted between the leveling screw and the sliding support arm.

[0009] One end of the outer side of the sliding support arm is fixedly connected to the limit block by a hexagon socket screw.

[0010] The screws installed on the side wall of the mounting slide are knurled high head screws.

[0011] The device of the present invention is made of stainless steel.

[0012] Three or four devices of the present invention are used as a set.

[0013] The beneficial effects of the present invention are:

[0014] The present invention is used for fixing, supporting and quickly leveling the inner sleeve of the lower bearing of the main pump motor, and has the characteristics of easy operation and good uniformity of the gap between the inner sleeve and the motor shaft after adjustment, thereby ensuring the smooth implementation of the main pump motor disassembly inspection and equipment defect handling work at the nuclear power site. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the present invention.

[0016] Figure 2 It is a side view of the present invention.

[0017] Figure 3 It is a schematic diagram of the installation of the present invention.

[0018] In the figure, 1- knurled high head screw, 2- hexagon socket screw, 3- sliding support arm, 4- limit block, 5- mounting slide, 6- fixing bolt, 7- leveling screw, 8- hexagonal thin nut, 11- main pump motor lower bearing housing, 12- main pump motor lower bearing inner sleeve, 13- main pump motor shaft. DETAILED DESCRIPTION

[0019] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0020] like Figure 1 , Figure 2 As shown, the present invention is a device suitable for adjusting the clearance of the inner sleeve of the lower bearing of the main pump motor, including an installation slide 5, a sliding support arm 3, a limit block 4, a leveling screw 7, a fixing bolt 6, and a matching knurled high head screw 1, a hexagon socket screw 2, and a hexagonal thin nut 8.

[0021] The mounting slide 5 is a symmetrical structure, including an arc-shaped support plate and a radial sliding groove. The curvature of the support plate is the same as the curvature of the lower bearing housing 11 of the main pump motor. Both ends of the support plate are provided with non-removable fixing bolts 6, which can fix the mounting slide 5 to the bottom of the lower bearing housing 11 of the main pump motor to achieve the positioning of the present invention.

[0022] A sliding support arm 3 is installed in the sliding groove, and the sliding support arm 3 can slide along the sliding groove to adjust the support position; one end of the outer side of the sliding support arm 3 is fixedly connected to the limit block 4 by a hexagon socket screw 2 to prevent the sliding support arm 3 from sliding out of the mounting slide 5 and limit the sliding support arm 3; a knurled high head screw 1 is installed on the side wall of the mounting slide 5, which can tighten the sliding support arm 3 in the mounting slide 5 to position the sliding support arm 3; a leveling screw 7 is installed at one end of the inner side of the sliding support arm 3, which can be fixedly connected to the bottom of the inner sleeve 12 of the lower bearing of the main pump motor, and the horizontality of the inner sleeve 12 of the lower bearing of the main pump motor can be adjusted by adjusting the leveling screw 7; a hexagonal thin nut 8 is installed between the leveling screw 7 and the sliding support arm 3, which is used to lock and fix the leveling screw 7 after it is adjusted into place to prevent it from loosening.

[0023] like Figure 3 As shown, the present invention is made of stainless steel material, and leveling is performed by evenly arranging three to four devices described in the present invention along the circumference of the inner sleeve 12 of the lower bearing of the main pump motor, so that the inner sleeve 12 of the lower bearing of the main pump motor is evenly stressed during leveling, and the adjustment range of each support point is the same.

[0024] The assembly and use method of the present invention are as follows:

[0025] Step 1, assemble the device described in the present invention, insert the sliding support arm 3 into the mounting slide 5, then use the hexagon socket screw 2 to fix the limit block 4 to the sliding support arm 3, and then install the leveling screw 7, the fixing bolt 6 and the knurled high head screw 1.

[0026] Step 2: Fix the device of the present invention in the threaded hole at the bottom of the lower bearing housing 11 of the main pump motor by means of fixing bolts 6.

[0027] Step three, repeat step two to install three to four devices described in the present invention along the circumferential direction of the center line of the inner sleeve 12 of the lower bearing of the main pump motor.

[0028] Step 4. After checking that the equipment is installed correctly, use the leveling screw 7 to adjust the levelness of the inner sleeve 12 of the lower bearing of the main pump motor. During the adjustment process, measure the gap between the inner sleeve 12 of the lower bearing of the main pump motor and the main pump motor shaft 13 at any time to ensure that the inner sleeve 12 of the lower bearing of the main pump motor is as level as possible.

[0029] The embodiments of the present invention are described in detail above. The above implementation modes are only the best embodiments of the present invention. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention.

Claims

1. A device for adjusting the clearance of the inner sleeve of the lower bearing of the main pump motor, characterized in that: It comprises a mounting slide (5), a sliding support arm (3), a limit block (4), a leveling screw (7), and a fixing bolt (6); The mounting slide (5) is a symmetrical structure, comprising an arc-shaped support plate and a radial sliding groove, the arc of the support plate is the same as the arc of the lower bearing housing (11) of the main pump motor, and both ends of the support plate are provided with fixing bolts (6) that cannot be dislodged, fixing the mounting slide (5) to the bottom of the lower bearing housing (11) of the main pump motor; A sliding support arm (3) is installed in the sliding groove, and the sliding support arm (3) can slide along the sliding groove; one end of the outer side of the sliding support arm (3) is fixedly connected to the limit block (4) to prevent the sliding support arm (3) from sliding out of the mounting slide (5) and to limit the sliding support arm (3); a screw capable of tightening the sliding support arm (3) in the mounting slide (5) is installed on the side wall of the mounting slide (5) to position the sliding support arm (3); one end of the inner side of the sliding support arm (3) is installed with a leveling screw (7) to be fixedly connected to the bottom of the inner sleeve (12) of the lower bearing of the main pump motor, and the horizontality of the inner sleeve (12) of the lower bearing of the main pump motor is adjusted by adjusting the leveling screw (7).

2. A device for adjusting the clearance of the inner sleeve of the lower bearing of the main pump motor as claimed in claim 1, characterized in that: It also includes a hexagonal thin nut (8), which is installed between the leveling screw (7) and the sliding support arm (3).

3. A device for adjusting the clearance of the inner sleeve of the lower bearing of the main pump motor as claimed in claim 1, characterized in that: One end of the outer side of the sliding support arm (3) is fixedly connected to the limit block (4) via a hexagon socket screw (2).

4. A device for adjusting the clearance of the inner sleeve of the lower bearing of the main pump motor as claimed in claim 1, characterized in that: The screws installed on the side wall of the mounting slide (5) are knurled high-head screws (1).

5. A device for adjusting the clearance of the inner sleeve of the lower bearing of the main pump motor as claimed in claim 1, characterized in that: The device is made of stainless steel.

6. A device for adjusting the clearance of the inner sleeve of the lower bearing of the main pump motor as claimed in claim 1, characterized in that: Three or four of the devices are used as a set.

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