CN221033635U - Split type shaft sleeve for pump shafts with flanges at two ends - Google Patents

Abstract

The utility model provides a split type shaft sleeve for a pump shaft with flanges at two ends, which is convenient and quick to mount, dismount and maintain and low in required labor cost. It includes first half axle sleeve and second half axle sleeve, its characterized in that: the first half shaft sleeve and the second half shaft sleeve respectively comprise a first semicircular ring at two ends and a second semicircular ring at the middle part, the first half shaft sleeve and the second half shaft sleeve are connected through a connecting mechanism in a half way, and the connecting mechanism comprises a sinking groove arranged in the first semicircular ring of the first half shaft sleeve and a connecting screw arranged in the sinking groove; the middle parts of the first half shaft sleeve and the first half ring of the second half shaft sleeve are respectively provided with an anti-rotation screw.

Description

A split shaft sleeve for a pump shaft with flanges at both ends

Technical Field

The utility model relates to the technical field of large pump body parts, in particular to a half-type shaft sleeve for a pump shaft with flanges at both ends.

Background technique

At present, the pump shafts of large and medium-sized water pumps are generally forged as a whole with the unit, and the traditional integral sleeve cannot be installed on them. At present, there are two types of sleeves used for the pump shafts of large and medium-sized water pumps:

1. Welded sleeve. When installing this sleeve, you need to cut a piece of stainless steel plate, drill a lot of holes on it, flatten and bend it into the required shape, and then weld it to the pump shaft. When processing and repairing, you need to return to the factory to remove the original welded part, and then re-weld it, which makes the pump station maintenance cycle long and the maintenance cost high. Even when other parts of the pump station do not need to be repaired, but the pump shaft is excessively worn, the entire unit must be disassembled for maintenance, resulting in high disassembly and maintenance costs.

2. Overlay welding type shaft sleeve. This type of shaft sleeve is difficult to weld. The temperature control and welding progress requirements during the overlay welding process must meet a strict standard, otherwise interlayer cracks will occur or the performance will not meet the requirements and will be scrapped. The overlay welding process is complicated and difficult to control, and the labor cost is high.

It can be seen that the installation, disassembly and maintenance process of these two types of bushings is time-consuming and labor-intensive, and the labor cost required is too high.

Summary of the invention

Aiming at the shortcomings of the existing shaft sleeve for flanged pump shaft at both ends being time-consuming and labor-intensive to install and maintain, and requiring excessively high labor costs, the utility model provides a half-type shaft sleeve for flanged pump shaft at both ends, which is convenient and quick to install, disassemble and maintain, and requires low labor costs.

A split-half sleeve for a flange-type pump shaft at both ends, comprising a first half sleeve and a second half sleeve, characterized in that the first half sleeve and the second half sleeve respectively comprise first semicircular rings at both ends and a second semicircular ring in the middle, the first half sleeve and the second half sleeve being connected via a connecting mechanism, the connecting mechanism comprising a recessed groove provided in the first semicircular ring of the first half sleeve, and connecting screws installed in the recessed groove; anti-rotation screws are respectively provided in the middle of the first semicircular rings of the first half sleeve and the second half sleeve.

It is further characterized by:

The connecting screw is provided with an anti-loosening connecting piece, one end of which is connected to the top of the connecting screw through an anti-loosening latch, and the other end of which is connected to the bottom wall of the sink groove through an anti-loosening positioning pin;

A conical surface is provided at the connection between the first semicircular ring and the second semicircular ring;

The outer wall of the half connection between the first half sleeve and the second half sleeve is provided with an arc curved inwards;

The pump shaft is provided with a mounting section for mounting the half-type shaft sleeve, the length of the half-type shaft sleeve is slightly smaller than the length of the mounting section, and the diameter of the middle section of the mounting section is slightly smaller than the diameter of the inner diameter of the half-type shaft sleeve;

The outer diameter and the inner diameter of the first semicircular ring are smaller than the outer diameter and the inner diameter of the second semicircular ring.

After adopting the above-mentioned structure of the utility model, the arrangement of the half-type shaft sleeve and the connecting mechanism makes it possible to complete the installation by simply combining the two halves of the half-type shaft sleeve and installing them on the pump shaft and then screwing on the connecting screws and the anti-loosening mechanism. The disassembly can be completed by unscrewing the connecting screws and the anti-loosening mechanism and then separating the two halves of the half-type shaft sleeve. There is no need to weld on the pump shaft during installation, and there is no need to disassemble the entire unit for disassembly. The installation and disassembly process is convenient and quick, reducing the time and labor costs required for maintenance and replacement.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the structure of the utility model from the front view;

Fig. 2 is a schematic diagram of a cross-section taken along the line A-A of Fig. 1;

Fig. 3 is a schematic diagram of a cross-section taken along line B-B of Fig. 1;

FIG4 is a detailed schematic diagram of the connection screw;

FIG5 is an enlarged view of a point Z in FIG1 ;

FIG. 6 is a schematic diagram of the structure of the utility model when it is installed on the pump shaft.

Detailed ways

The utility model is further described below in conjunction with the accompanying drawings.

See Figures 1 to 5, a half-type shaft sleeve for a flange-type pump shaft at both ends, which includes a first half shaft sleeve 2 and a second half shaft sleeve 3. The first half shaft sleeve 2 and the second half shaft sleeve 3 respectively include a first semicircular ring 11 at both ends and a second semicircular ring 12 in the middle. The outer diameter of the first semicircular ring 11 is smaller than the outer diameter of the second semicircular ring 12, and the inner diameter of the first semicircular ring 11 is smaller than the inner diameter of the second semicircular ring 12. The first half shaft sleeve 2 and the second half shaft sleeve 3 are connected by a connecting mechanism. The connecting mechanism includes a recessed groove 4 provided in the first semicircular ring 11 of the first half shaft sleeve 2 and a connecting screw 5 installed in the recessed groove 4; an anti-loosening connecting piece is provided on the connecting screw 5, one end of the anti-loosening connecting piece 6 is connected to the top of the connecting screw 5 through an anti-loosening pin 7, and the other end is connected to the bottom groove wall of the recessed groove 4 through an anti-loosening positioning pin 8, so as to prevent the connecting screw 5 from loosening.

An outer wall of the half connection between the first half sleeve 2 and the second half sleeve 3 is provided with an inwardly curved arc 14 for preventing the first half sleeve 2 and the second half sleeve 3 from misaligning and scraping the bearing.

A conical surface 15 is provided at the connection between the first semicircular ring 11 and the second semicircular ring 12 to avoid looseness between the split shaft sleeve 1 and the pump shaft 10 due to matching problems.

An anti-rotation screw 9 is provided in the middle of the first semicircular ring 11 of the first half sleeve 2 to prevent relative rotation between the half sleeve 1 and the pump shaft 10 .

The pump shaft 10 is provided with a mounting section 13 for mounting a half-shaft sleeve 1. The length of the half-shaft sleeve 1 is slightly smaller than the length of the mounting section 13. The outer diameter of the middle section of the mounting section 13 is slightly smaller than the inner diameter of the half-shaft sleeve 1, so that a gap is left between the sleeve 1 and the pump shaft 10 to reduce the wear between the sleeve 1 and the pump shaft 10.

During installation, the first half sleeve 2 and the second half sleeve 3 are combined and installed on the pump shaft 10, and then the connecting screws 5 and the anti-loosening connector 8 are screwed on to complete the installation. During disassembly, the connecting screws 5 and the anti-loosening connector 8 are screwed off, and then the first half sleeve 2 and the second half sleeve 3 are separated to complete the disassembly.

Claims (6)

1. A split-half sleeve for a flange-type pump shaft at both ends, comprising a first half sleeve and a second half sleeve, characterized in that: the first half sleeve and the second half sleeve respectively comprise first semicircular rings at both ends and a second semicircular ring in the middle, the first half sleeve and the second half sleeve are connected by a connecting mechanism, the connecting mechanism comprises a recessed groove provided in the first semicircular ring of the first half sleeve, and connecting screws installed in the recessed groove; the middle of the first semicircular ring of the first half sleeve and the second half sleeve are respectively provided with anti-rotation screws. 2. A half-type shaft sleeve for a pump shaft with flanges at both ends according to claim 1, characterized in that: an anti-loosening connecting piece is provided on the connecting screw, one end of the anti-loosening connecting piece is connected to the top of the connecting screw through an anti-loosening pin, and the other end is connected to the bottom groove wall of the sink groove through an anti-loosening positioning pin. 3. A split-half sleeve for a pump shaft with flanges at both ends according to claim 1 or 2, characterized in that a conical surface is provided at the connection between the first semicircular ring and the second semicircular ring. 4. A split-half sleeve for a pump shaft with flanges at both ends according to claim 1 or 2, characterized in that an outer wall of a half-sleeve connection between the first half-sleeve and the second half-sleeve is provided with an inwardly curved arc. 5. A split shaft sleeve for a double-end flange pump shaft according to claim 1 or 2, characterized in that: the pump shaft is provided with a mounting section for mounting the split shaft sleeve, the length of the split shaft sleeve is slightly smaller than the length of the mounting section, and the diameter of the middle section of the mounting section is slightly smaller than the diameter of the inner diameter of the split shaft sleeve. 6. A split-half sleeve for a pump shaft with flanges at both ends according to claim 1 or 2, characterized in that the outer diameter and inner diameter of the first semicircular ring are smaller than the outer diameter and inner diameter of the second semicircular ring.