Shaft lifting device special for large horizontal pump

Abstract

The utility model relates to the technical field of horizontal pump shaft lifting, in particular to a special shaft lifting device for a large horizontal pump, which comprises a lower bearing box, a force application plate is arranged on the surface of one side of the lower bearing box, a main shaft is arranged in the middle of the surface of the inner side of the lower bearing box, and a hoop is arranged in the middle of the surface of one side of the main shaft. A support is arranged at the end of the surface of the top end of the lower bearing box, a fixing plate is arranged on the surface of the top end of the support, and an adjusting rotating shaft is arranged in the middle of the surface of the top end of the fixing plate. By means of the tool, damage to the spindle and the bearing bush caused by sliding of the crowbar when the crowbar is used can be effectively avoided, clamping injury caused by taking out the bearing bush and replacing the bearing bush by the worker is avoided, and the overall working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of horizontal pump shaft lifting, in particular to a special shaft lifting device for a large horizontal pump. Background Art

[0002] After searching the existing Chinese patent document with the announcement number CN220302353U, a special shaft lifting and measuring tool for horizontal pumps is disclosed, including a shaft sleeve, a vertically arranged gauge frame is fixedly provided on the upper surface side of the shaft sleeve, the gauge frame is arranged in an L shape, and a lever gauge is provided on the vertical side of the gauge frame. The inner wall of the shaft sleeve is provided with grooves at both ends of the gauge frame, and a double-headed screw with opposite threads at both ends is rotatably arranged in the groove, and moving blocks are inserted into the threads at both ends of the double-headed screw. The rotating wheel of the device drives the double-headed screw to rotate through the rotating shaft, so that the moving blocks threadedly inserted at both ends of the double-headed screw move in opposite directions, so that the push rods rotatably arranged on the two moving blocks push the positioning block to move, so that the positioning block pushes the water pump main shaft in the shaft sleeve to position it, so that the shaft sleeve can be stably set on the water pump main shaft, thereby improving the stability of the device after installation and preventing vibration from causing inaccurate experimental data.

[0003] A horizontal pump is a horizontal centrifugal pump. A centrifugal pump is designed based on the principle of centrifugal force. The high-speed rotating impeller blades drive the water to rotate and throw the water out, thereby achieving the purpose of transportation. There are many types of centrifugal pumps. They can be divided into civil and industrial pumps based on their use; they can be divided into clean water pumps, impurity pumps, corrosion-resistant pumps, etc. based on the conveying medium. Existing horizontal pumps mainly rely on a crowbar to pry the main shaft, and it is impossible to specifically control the amount of main shaft lifting. The crowbar is prone to slipping during the prying process, which can cause damage to the main shaft and bearing. If the crowbar slips during the replacement of the bearing, it is easy to cause personnel to be pinched. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a special shaft lifter for a large horizontal pump, aiming to solve the technical problem that the existing horizontal pump is prone to crowbar sliding during the crowbar prying process, thereby causing damage to the main shaft and bearing shells. If the crowbar slides during the bearing shell replacement process, it is easy to cause personnel to be pinched.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] The utility model discloses a shaft lifter specially used for a large horizontal pump, comprising a lower bearing box, a force-applying plate being arranged on one side surface of the lower bearing box, a main shaft being arranged in the middle of the inner surface of the lower bearing box, a clamping hoop being arranged in the middle of one side surface of the main shaft, a support being arranged on the end of the top surface of the lower bearing box, a fixing plate being arranged on the top surface of the support, and an adjusting shaft being arranged in the middle of the top surface of the fixing plate.

[0007] As a further description of the above technical solution:

[0008] The lower bearing box and the force plate are fixedly connected and fixed by bolts. The lower bearing box and the main shaft are fixedly connected, and the main shaft is a cylindrical structure.

[0009] As a further description of the above technical solution:

[0010] The main shaft and the clamp are fixed by bolts connecting a fixing plate, and the fixing plate is connected and fixed by a support connected to a lower bearing box.

[0011] As a further description of the above technical solution:

[0012] The lower bearing box and the fixed plate are fixedly connected to the support, and the support is placed at the two ends of the bottom of the fixed plate. The supports at both ends are arranged in two groups, and the fixed plate and the adjusting shaft are threadedly connected.

[0013] The utility model has the following beneficial effects:

[0014] In the utility model, by being able to realize the measurement and adjustment of the lifting amount of the main shaft for disassembly and installation of the lower bearing shell of a large horizontal centrifugal pump and the lifting amount of the rotor components, the lifting amount of the main shaft can be controlled, the loss of the main shaft and the bearing shell can be prevented, and the workers can be prevented from being injured. The use of this tooling can effectively avoid damage to the main shaft and the bearing shell due to the sliding of the crowbar when using the crowbar, avoid pinching injuries when the workers remove the bearing shell and replace the bearing shell, and improve the overall work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 It is a front view schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a side view schematic diagram of the lower bearing box of the utility model;

[0018] Figure 3 It is a top view schematic diagram of the lower bearing box of the utility model;

[0019] In the figure: 1. Lower bearing box; 2. Force plate; 3. Main shaft; 4. Clamp; 5. Support; 6. Fixed plate; 7. Adjusting shaft. DETAILED DESCRIPTION

[0020] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0021] In the drawings, the same reference numerals all refer to the same components.

[0022] Example 1

[0023] Reference Figure 1-3 The utility model provides an embodiment: a shaft lifter specially used for a large horizontal pump, comprising a lower bearing box 1, a force plate 2 is arranged on one side surface of the lower bearing box 1, a main shaft 3 is arranged in the middle of the inner surface of the lower bearing box 1, a clamp 4 is arranged in the middle of one side surface of the main shaft 3, a support 5 is arranged at the end of the top surface of the lower bearing box 1, a fixing plate 6 is arranged on the top surface of the support 5, and an adjusting shaft 7 is arranged in the middle of the top surface of the fixing plate 6.

[0024] The lower bearing box 1 and the force plate 2 are fixedly connected and fixed by bolts. The lower bearing box 1 and the main shaft 3 are fixedly connected, and the main shaft 3 is a cylindrical structure.

[0025] The main shaft 3 and the clamp 4 are fixed by bolting a fixing plate 6, and the fixing plate 6 is connected and fixed to the lower bearing box 1 through a support 5.

[0026] The lower bearing box 1 and the fixed plate 6 are fixedly connected to the support 5, and the support 5 is placed at both ends of the bottom of the fixed plate 6. The supports 5 at both ends are arranged in two groups, and the fixed plate 6 and the adjusting shaft 7 are threadedly connected.

[0027] Specifically, its structure is composed of a lower bearing box 1, a force plate 2, a main shaft 3, a clamp 4, a support 5, a fixed plate 6 and an adjusting shaft 7 to form a special shaft lifter for a large horizontal pump. After the upper bearing box is removed, the special shaft lifter for a large horizontal pump is installed on the inner side of the lower bearing box 1. The middle position of the force plate 2 is a semi-through hole, and the adjusting shaft 7 is twisted to apply a reaction force. The clamp 4 is wrapped around the main shaft 3 to drive the main shaft upward. The clamp and the adjusting shaft 7 are connected to the lower bearing box 1 and the fixed plate 6 through the support 5. The middle position of the fixed plate 6 is a through hole, which can mainly drive the clamp 4 upward, thereby lifting the main shaft 3. The lifting amount of the main shaft 3 is controlled by twisting the adjusting shaft 7, so that the lifting amount of the main shaft 3 is controllable, thereby preventing the loss of the main shaft 3 and the bearing, and effectively improving the overall practicality and work efficiency of the special shaft lifter for large horizontal pumps.

[0028] Working principle: After removing the upper end cover of the bearing box, install a large horizontal pump special shaft lifting tool on the inner side of the lower bearing box 1. By adjusting the rotating shaft 7 to control the lifting amount of the shaft, it is convenient to remove and install the bearing shell, effectively avoiding the damage of the main shaft and bearing shell caused by the sliding of the crowbar, and avoiding pinching injuries when removing and replacing the bearing shell.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A shaft lifter for a large horizontal pump, comprising a lower bearing box (1), characterized in that: A force-applying plate (2) is provided on one side surface of the lower bearing box (1), a main shaft (3) is provided in the middle of the inner side surface of the lower bearing box (1), a clamp (4) is provided in the middle of one side surface of the main shaft (3), a support (5) is provided at the end of the top surface of the lower bearing box (1), a fixing plate (6) is provided on the top surface of the support (5), and an adjusting shaft (7) is provided in the middle of the top surface of the fixing plate (6).

2. A shaft lifter for large horizontal pumps according to claim 1, characterized in that: The lower bearing box (1) and the force-applying plate (2) are fixedly connected and fixed by bolts. The lower bearing box (1) and the main shaft (3) are fixedly connected, and the main shaft (3) is a cylindrical structure.

3. The shaft lifter for large horizontal pumps according to claim 1, characterized in that: The main shaft (3) and the hoop (4) are fixed by bolting a fixing plate (6), and the fixing plate (6) is connected and fixed to the lower bearing box (1) via a support (5).

4. The shaft lifter for large horizontal pumps according to claim 1, characterized in that: The lower bearing box (1) and the fixed plate (6) are fixedly connected to the support (5), and the support (5) is placed at the two ends of the bottom of the fixed plate (6). The supports (5) at both ends are arranged in two groups, and the fixed plate (6) and the adjusting shaft (7) are threadedly connected.

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