Device convenient for pressure splitting of middle shaft and bearing of large machine pump

Abstract

The utility model provides a device convenient for pressure splitting of a shaft and a bearing in a large machine pump, which comprises a bearing support base, a bearing support, a bearing support, a bearing support, a bearing support and a bearing support, the bearing support base comprises a limit surface and a through groove, the limit surface is used for supporting the end face of the bearing, and the through groove is arranged on the limit surface and used for penetration of the shaft; the stamping device comprises a static part and a movable part, and the static part is fixedly supported above the bearing supporting base; the movable part can drive the shaft to move away from the bearing relative to the movable part in the axis direction of the shaft so that the shaft can be separated from the bearing. According to the device, the bearing and the shaft can be perfectly detached, so that the secondary use of the bearing is not influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing maintenance, in particular to a device which is convenient for pressure separation of a central shaft and a bearing of a large machine pump. Background Art

[0002] The surface of the bearing ring and rolling element has high processing accuracy and relative roughness. In order to ensure the working accuracy and service life of the bearing, the installation and disassembly of the bearing should be more careful. Often, the short service life of the bearing is mainly caused by incorrect disassembly and assembly methods.

[0003] The shaft and the bearing are generally fitted with an interference fit. The disassembly and assembly method of the bearing is generally selected according to the size of the interference. When the interference is small, the hammering method can be used for disassembly and assembly. When the interference is large, the pulling method is used. When the interference is large, the temperature difference method should be used to heat the bearing for disassembly and assembly. However, in actual production operations, for some bearings with large shaft diameters and large interference, such as those in large machine pumps, the above three traditional disassembly and assembly methods are not applicable. If this method is still used, the shaft or bearing will be damaged in serious cases, which will increase unnecessary production and maintenance costs. In addition, the traditional method is to manually pull the bearing using threads, which often cannot completely remove the bearing and consumes manpower.

[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the utility model, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to ordinary technicians in this field. Utility Model Content

[0005] Purpose of the utility model: The technical problem to be solved by the utility model is to provide a device for facilitating the pressure separation of the shaft and the bearing in a large machine pump in view of the deficiencies in the prior art, so as to separate the bearing and the shaft intactly without affecting the secondary use of the bearing.

[0006] In order to solve the above technical problems, the utility model discloses a device for facilitating the pressure separation of the shaft and the bearing in a large machine pump, which includes a bearing support base and a punching device. The bearing support base includes a limit surface for supporting the end face of the bearing and a through groove provided on the limit surface for the shaft to pass through. The punching device includes a stationary component and a movable component, and the stationary component is fixedly supported above the bearing support base. The movable component can drive the shaft to move away from the bearing relative to the movable component along the axial direction of the shaft, so as to separate the shaft from the bearing.

[0007] In one embodiment, the device comprises a mounting bracket, wherein the mounting bracket is fixedly connected to the top of the bearing support base, and the stationary component is fixedly connected to the mounting bracket, so that the stationary component is fixedly supported above the bearing support base.

[0008] In one embodiment, the mounting bracket includes a mounting crossbeam and a first supporting column, and the stationary component is fixedly connected to the mounting crossbeam to achieve the stationary component being fixedly connected to the mounting bracket. The upper end of the first supporting column is fixedly connected to the mounting crossbeam, and the lower end of the first supporting column is fixedly connected to the bearing support base to achieve the mounting bracket being fixedly connected to the upper part of the bearing support base.

[0009] In one embodiment, the device includes a second supporting column, and the lower end of the bearing support base is fixedly connected to the top end of the second supporting column.

[0010] In one embodiment, the device comprises a base, and the lower end of the second supporting column is fixedly connected to the base.

[0011] In one embodiment, the device comprises a receiving through groove, the receiving through groove is provided above the through groove, and the groove bottom of the receiving through groove is defined as the limiting surface.

[0012] In one embodiment, the device further comprises a notch channel, wherein the notch channel horizontally extends from the accommodating through slot to the outside of the bearing support base.

[0013] In one embodiment, the bearing support base includes a bearing support lower base and a bearing support upper base located above the bearing support lower base, the bearing support lower base is fixedly connected to the bearing support upper base, the accommodating through groove is arranged through the bearing support lower base, and the top surface of the bearing support lower base is located in the accommodating through groove. The area defines the groove bottom of the accommodating through groove. The through groove runs through the bearing support lower base.

[0014] In one embodiment, the device further comprises an adaptor gasket, which is removably mounted in the accommodating groove, and the inner cavity formed by the adaptor gasket is used to clamp the outer peripheral wall surface of the bearing.

[0015] In one embodiment, the base, the bearing support lower base and the bearing support upper base are all rectangular plate structures. There are four second support columns, which are respectively arranged at four corner positions of the bearing support lower base.

[0016] In one embodiment, two first supporting columns are provided, and the two first supporting columns are respectively arranged at two opposite ends of the mounting beam along the length direction thereof.

[0017] In one embodiment, the punching device is a screw jack, and the through groove is arranged in the middle of the bearing support base.

[0018] Beneficial effects:

[0019] The utility model provides a device for facilitating pressure separation of the shaft and bearing in a large machine pump, and utilizes a stamping device such as a jack to drive the shaft to move relative to the bearing so as to separate the bearing and the shaft intactly, thereby not affecting the secondary use of the bearing. This method helps to reduce costs and save manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods, and the above and / or other advantages of the present invention will become more clear.

[0021] Figure 1 A main sectional view of a device for facilitating pressure separation of a shaft and a bearing in a large machine pump, provided in the first embodiment of the present practical information.

[0022] Figure 2 For along Figure 1 A cross-sectional view taken along line AA in FIG.

[0023] Figure 3 for Figure 1 A top view of a mounting crossbeam in a device that facilitates pressure separation of shafts and bearings in large machine pumps is shown.

[0024] Figure 4 for Figure 1 The diagram shown is a diagram of the use status of the device for facilitating the pressure separation of the shaft and bearing in a large machine pump.

[0025] Figure 5 A top view of an adapter gasket in a device for facilitating pressure separation of a shaft and a bearing in a large machine pump, provided in accordance with the first embodiment of the present practical information.

[0026] The description of the accompanying drawings is:

[0027] 1. Bearing support base; 11. Limiting surface; 12. Through groove; 13. Bearing support lower base; 14. Bearing support upper base; 141. Accommodating through groove; 151. Notch channel; 2. Bearing; 3. Shaft; 4. Stamping device; 41. Stationary part; 42. Moving part; 5. Mounting bracket; 51. Mounting beam; 52. First supporting column; 6. Second supporting column; 7. Base; 8. Adapter gasket; 9. Bolt hole. DETAILED DESCRIPTION

[0028] Example 1

[0029] See now Figures 1 to 4This embodiment provides a device for facilitating pressure separation of the shaft and bearing in a large pump. Before removal, the bearing 2 is fixedly sleeved on the shaft 3. The device includes a bearing support base 1 and a punching device 4.

[0030] See now Figure 1 and Figure 4 The bearing support base 1 includes a limiting surface 11 for supporting the end surface of the bearing 2 and a through groove 12 opened on the limiting surface 11 and for the shaft 3 to pass through.

[0031] See now Figure 1 The punching device 4 includes a stationary component 41 and a movable component 42, wherein the stationary component 41 is fixedly supported above the bearing support base 1. Figure 4 The movable component 42 can drive the shaft 3 to move away from the bearing 2 along the axial direction of the shaft 3 relative to the movable component 42 , so that the shaft 3 is separated from the bearing 2 .

[0032] See now Figure 1 The device includes a mounting bracket 5, the mounting bracket 5 is fixedly connected to the top of the bearing support base 1, and the stationary component 41 is fixedly connected to the mounting bracket 5, so that the stationary component 41 is fixedly supported above the bearing support base 1.

[0033] See now Figure 1 The mounting bracket 5 includes a mounting crossbeam 51 and a first supporting column 52, and the stationary component 41 is fixedly connected to the mounting crossbeam 51 to achieve the stationary component 41 being fixedly connected to the mounting bracket 5. The upper end of the first supporting column 5251 is fixedly connected to the mounting crossbeam 51, and the lower end of the first supporting column 52 is fixedly connected to the bearing support base 1 to achieve the mounting bracket 5 being fixedly connected to the upper part of the bearing support base 1.

[0034] See now Figure 1 The device includes a second supporting column 6, and the lower end of the bearing support base 1 is fixedly connected to the top end of the second supporting column 6.

[0035] See now Figure 1 The device includes a base 7, and the lower end of the second supporting column 6 is fixedly connected to the base 7.

[0036] See now Figure 1 and Figure 2 The device includes a receiving through groove 141 , and a receiving through groove 141 is opened above the through groove 12 , and the bottom of the receiving through groove 141 is defined as a limiting surface 11 .

[0037] See now Figure 2 The device also includes a notch channel 151, which extends horizontally from the accommodating groove 141 to the outside of the bearing support base 1.

[0038] See now Figure 1 The bearing support base 1 includes a bearing support lower base 13 and a bearing support upper base 14 located above the bearing support lower base 13. The bearing support lower base 13 is fixedly connected to the bearing support upper base 14. The receiving groove 141 is provided through the bearing support lower base 13. The top surface of the bearing support lower base 13 is located in the receiving groove 141, and the area defining the groove bottom of the receiving groove 141. The groove 12 runs through the bearing support lower base 13.

[0039] See now Figure 2 The base 7, the bearing support lower base 13 and the bearing support upper base 14 are all rectangular plate structures. Four second support columns 6 are provided, which are respectively arranged at four corner positions of the bearing support lower base 13.

[0040] See now Figure 2 There are two first supporting columns 52, and the two first supporting columns 52 are respectively arranged at two opposite ends of the mounting beam 51 along the length direction thereof.

[0041] See now Figure 1 The punching device 4 is a screw jack, and the through slot 12 is arranged in the middle of the bearing support base 1. The accommodating through slot 141 is arranged coaxially with the through slot 12.

[0042] It should be understood that the base 7, the bearing-supported lower base 13, the bearing-supported upper base 14 and the mounting crossbeam 51 may be of other shapes, and the structural strength should be sufficient to withstand the force of the punching device.

[0043] In a specific embodiment, the bearing support lower base 13 and the bearing support upper base 14 can be made of square steel plate structure and refer to Figure 2 , a through bolt hole 9 is formed between the two. The two are stably connected by passing an M30 bolt through the bolt hole 9 and connecting with a nut. The base 7 and the mounting crossbeam 51 can also adopt a square steel plate structure. The diameter of the accommodating through groove 141 is 200 mm. The width of the notch channel 151 is 100 mm. The punching device 4 is a screw jack, which can weigh up to 20 tons and is inverted and fixed below the mounting crossbeam 51.

[0044] Below, refer to Figure 4 , the method of using the device for pressure separation of the shaft and bearing in a large machine pump shown in embodiment 1 of the present invention during the process of pressure removal of the shaft and bearing is described.

[0045] First, the bearing 2 is placed in the receiving groove 141 on the bearing support upper base 14, and the limiting surface 11 supports the lower end surface of the bearing 2. The shaft 3 passes through the groove 12 on the bearing support lower base 13.

[0046] Then, the working surface of the screw jack is adjusted to directly contact the top end surface of the shaft 3.

[0047] Then, start the screw jack and use the pressure of the screw jack to apply external force downward to the shaft 3. Since the axial displacement of the bearing 2 has been restricted by the limit surface 11, the movable part of the screw jack drives the shaft 3 to move downward relative to the bearing 2 until the shaft 3 and the bearing 2 are completely separated.

[0048] Example 2

[0049] On the basis of Example 1, the device further includes an adaptor gasket 8 , which is removably installed in the accommodating groove 141 , and the inner cavity formed by the adaptor gasket 8 is used to clamp the outer peripheral wall surface of the bearing 2 .

[0050] In addition to being used for disassembly and assembly of large bearings, for small diameter bearings, the device disclosed in this embodiment adjusts the space for accommodating the bearing by arranging an adaptor gasket 8 in the accommodating groove 141, so that a small diameter shaft can also be stably placed on the limiting surface 11 for disassembly and assembly. With such an improvement, bearings of different diameter ranges can be disassembled and assembled.

[0051] Specifically, the adapter gasket 8 can be a ring-shaped gasket with a notch, or two semicircular gaskets, such as Figure 5 shown.

[0052] The utility model provides a device for separating the pressure between the shaft and the bearing of a large pump. There are many methods and ways to implement the technical solution. The above is only the preferred implementation of the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the utility model. All components not specified in this embodiment can be implemented by existing technologies.

Claims

1. A device for facilitating the pressure separation of the shaft and bearing of a large machine pump, characterized in that: include: A bearing support base (1), the bearing support base (1) comprising a limiting surface (11) for supporting an end surface of a bearing (2) and a through groove (12) provided on the limiting surface (11) and for allowing a shaft (3) to pass through; And a punching device (4), comprising a stationary component (41) and a movable component (42), wherein the stationary component (41) is fixedly supported above the bearing support base (1); and the movable component (42) can drive the shaft (3) to move relative to the movable component (42) along the axial direction of the shaft (3) away from the bearing (2), so as to separate the shaft (3) from the bearing (2).

2. The device for facilitating pressure separation of the shaft and bearing of a large machine pump according to claim 1, characterized in that: It comprises a mounting bracket (5), wherein the mounting bracket (5) is fixedly connected to the top of the bearing support base (1), and the stationary component (41) is fixedly connected to the mounting bracket (5), so that the stationary component (41) is fixedly supported on the top of the bearing support base (1).

3. The device for facilitating pressure separation of the shaft and bearing of a large machine pump according to claim 2 is characterized in that: The mounting bracket (5) comprises a mounting crossbeam (51) and a first supporting column (52); the stationary component (41) is fixedly connected to the mounting crossbeam (51) so as to realize that the stationary component (41) is fixedly connected to the mounting bracket (5); the upper end of the first supporting column (52) is fixedly connected to the mounting crossbeam (51), and the lower end of the first supporting column (52) is fixedly connected to the bearing support base (1) so as to realize that the mounting bracket (5) is fixedly connected to the upper part of the bearing support base (1).

4. The device for facilitating pressure separation of the shaft and bearing of a large machine pump according to claim 3 is characterized in that: It comprises a second supporting column (6), and the lower end of the bearing supporting base (1) is fixedly connected to the top end of the second supporting column (6).

5. The device for facilitating pressure separation of the shaft and bearing of a large machine pump according to claim 4 is characterized in that: It comprises a base (7), and the lower end of the second supporting column (6) is fixedly connected to the base (7).

6. The device for facilitating pressure separation of the shaft and bearing of a large machine pump according to claim 1, characterized in that: It comprises a receiving through groove (141), the receiving through groove (141) is provided above the through groove (12), and the groove bottom of the receiving through groove (141) is defined as the limiting surface (11).

7. The device for facilitating pressure separation of the shaft and bearing of a large machine pump according to claim 6, characterized in that: It also comprises a notch channel (151), wherein the notch channel (151) extends horizontally from the accommodating groove (141) to the outside of the bearing support base (1).

8. The device for facilitating pressure separation of the shaft and bearing of a large machine pump according to claim 6, characterized in that: The bearing support base (1) comprises a bearing support lower base (13) and a bearing support upper base (14) located above the bearing support lower base (13); the bearing support lower base (13) is fixedly connected to the bearing support upper base (14); the accommodating through groove (141) is arranged to penetrate the bearing support lower base (13); the top surface of the bearing support lower base (13) is located in the accommodating through groove (141), and the area defining the groove bottom of the accommodating through groove (141); the through groove (12) penetrates the bearing support lower base (13).

9. The device for facilitating pressure separation of the shaft and bearing of a large machine pump according to claim 6, characterized in that: It also includes an adaptor gasket (8), which is removably installed in the accommodating groove (141), and the inner cavity formed by the adaptor gasket (8) is used to clamp the outer peripheral wall surface of the bearing (2).

10. The device for facilitating pressure separation of the shaft and bearing of a large machine pump according to claim 1, characterized in that: The punching device (4) is a screw jack, and the through groove (12) is arranged in the middle of the bearing support base (1).

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