Adjusting structure and adjusting method of sliding bearing bush

Abstract

The adjusting structure comprises a bearing body, the bearing body comprises a first bearing body, the first bearing body is provided with a first hole channel, and the first hole channel penetrates through the inner wall of the first bearing body; comprising a rod core, the rod core penetrates through a first hole channel and comprises an extending part and a connecting part, the connecting part is fixedly provided with a second bearing bush, the second bearing bush is located on the radial inner side of the inner wall of a first bearing body, the extending part comprises an outer wall face, the outer wall face is a spherical face, the first hole channel is a taper hole, and the extending part can be inserted into the first hole channel so that the outer wall face can abut against the inner wall face of the first hole channel; comprising a sliding sleeve, the inner wall of the sliding sleeve is slidably connected with a sliding part, the sliding part can move in the axial direction of the sliding part, the sliding part is fixedly connected with a rod core, and the sliding part moves to drive the rod core to synchronously move so that the rod core can abut against or leave one inner wall face of a hole channel. The invention provides an adjusting structure and an adjusting method of a sliding bearing bush, which realize clearance adjustment between the bearing bush and a shaft body and improve the operation performance of a unit.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sliding bearing, more particularly, to a sliding bearing bush adjusting structure and method. BACKGROUND

[0002] The maximum diameter of the sliding bearing for the engine unit is more than 1000mm, a plurality of bushes are installed on the inner wall of the bearing body, the bushes are uniformly distributed along the circumference of the bearing body, the shaft body is penetrated between the plurality of bushes, and the cooling oil is filled between the bushes and the shaft body to form a separation during operation.

[0003] The gap between the bushes and the shaft body affects the overall operation performance, the large gap between the bushes and the shaft body causes the device vibration and reduces the device life, and the small gap between the bushes and the shaft body causes the bush burning. At present, the gap between the bushes and the shaft body cannot be adjusted during the use and debugging of the bearing, which restricts the overall performance of the unit operation. SUMMARY

[0004] The present application aims to overcome the shortcomings of the prior art, and provides a sliding bearing bush adjusting structure and method, which can adjust the gap between the bushes and the shaft body and improve the operation performance of the unit.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme: a sliding bearing bush adjusting structure, comprising a bearing body, the bearing body comprises a first bearing body, the first bearing body is provided with a hole one, the hole one penetrates the inner wall of the first bearing body; comprising a rod core, the rod core penetrates the hole one, the rod core comprises an extension part and a connecting part, the connecting part is fixedly installed with a bush two, the bush two is located on the radial inner side of the inner wall of the first bearing body, the extension part comprises an outer wall surface, the outer wall surface is a spherical surface, the hole one is a tapered hole, the extension part can be inserted into the hole one, so that the outer wall surface can abut against the inner wall surface of the hole one; comprising a sliding sleeve, a sliding part is slidably connected to the inner wall of the sliding sleeve, the sliding part can move along the axial direction of itself, the sliding part is fixedly connected with the rod core, the movement of the sliding part drives the synchronous movement of the rod core, so that the rod core abuts against or leaves the inner wall surface of the hole one.

[0006] The present application is further provided that the first bearing body is provided with a hole two and a hole three, the hole two and the hole three are connected with a hydraulic system through a pipeline, the sliding sleeve is provided with a channel one and a channel two, the hole two is communicated with the channel one, and the hole three is communicated with the channel two.

[0007] The present application is further provided that the sliding part divides the inner cavity of the sliding sleeve into a cavity one and a cavity two, the cavity one is communicated with the channel one, and the cavity two is communicated with the channel two.

[0008] The present application is further provided that it further comprises a rod body, the rod body can move along the axial direction of itself to adjust its fixed position, and when the outer wall surface abuts against the inner wall surface of the hole one, a spacing is formed between the rod body and the rod core.

[0009] The application is further provided with a counterbore, a sliding sleeve is installed in the counterbore, the sliding sleeve is inserted into the counterbore, a bottom plate is installed in the counterbore, the rod core passes through the bottom plate, the rod core is in sliding connection with the bottom plate, and the rod core is in sliding sealing with the bottom plate.

[0010] The application is further provided that a sliding sealing ring is installed between the inner wall of the bottom plate and the outer wall of the rod core.

[0011] The application is further provided that the first bearing body is installed with an end cover, and the rod body is threadedly connected and inserted into the end cover.

[0012] The application is further provided that the end of the rod body away from the rod core abuts against a pressing plate, the end of the pressing plate away from the rod body abuts against a spring, the end of the spring away from the pressing plate abuts against a pressing cover, and the pressing cover is fixedly connected with the end cover.

[0013] The application is further provided that the bearing body comprises a second bearing body, the second bearing body is installed with a bearing bush one, and the bearing bush one and the bearing bush two are distributed along the circumference of the bearing body.

[0014] The application also adopts the following technical scheme: a sliding bearing bearing bush adjusting method, comprising the following steps:

[0015] ①screwing the rod body to adjust the distance between the rod body and the rod core, so that the movable distance of the rod core is increased;

[0016] ②moving the sliding part radially outward along the first bearing body, the sliding part drives the rod core to move synchronously, the rod body abuts against the rod core, the maximum distance state is formed between the outer wall surface and the inner wall of the hole one, and the maximum distance is formed between the bearing bush one and the bearing bush two;

[0017] ③repeating step ① to adjust the distance between the rod body and the rod core, and then adjusting the distance between the bearing bush two and the shaft body.

[0018] In summary, the application has the following beneficial effects:

[0019] 1. By controlling the distance between the bearing bush two and the shaft body, the local gap between the bearing bush two and the shaft body is avoided to be too small to cause the bearing bush to burn, and the gap is avoided to be too large to cause vibration.

[0020] 2. By increasing the gap between the outer wall surface and the hole one, the rotating range of the extension part is improved, the rotating range of the bearing bush two fixed with the connecting part is improved, the self-adaptive adjustment of the bearing bush two is facilitated when the shaft body is inserted and installed, the resistance generated when the bearing bush two and the shaft body are installed is reduced, and the installation is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a sectional view of the embodiment;

[0022] Figure 2 It isFigure 1 Enlarged view at A in the middle;

[0023] Figure 3 Axial view of the rod body in the embodiment;

[0024] Figure 4 Positional view of the rod core in the embodiment;

[0025] Figure 5 Another sectional view of the embodiment.

[0026] Bearing body 1, first bearing body 11, counterbore 111, channel one 112, channel two 113, channel three 114, second bearing body 12, bearing pad one 121, sliding sleeve 2, passage one 21, passage two 22, cavity one 23, cavity two 24, rod core 3, extension 31, outer wall surface 311, connecting portion 32, bearing pad two 4, sliding component 5, end cover 6, rod body 61, groove body 611, pressing plate 62, spring 63, gland 64, shaft body 7, bottom plate 8. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0028] As shown in Figure 1 , the embodiment discloses an adjusting structure of a sliding bearing bearing pad, which comprises a bearing body 1. The bearing body 1 is a circular ring structure. The bearing body 1 comprises a first bearing body 11 and a second bearing body 12. Both the first bearing body 11 and the second bearing body 12 are semicircular ring structures. The first bearing body 11 and the second bearing body 12 are fixedly connected to form the bearing body 1.

[0029] As shown in Figure 1 , the first bearing body 11 is provided with a bearing pad two 4, and the second bearing body 12 is provided with two bearing pad ones 121. The bearing pad one 121 and the bearing pad two 4 are distributed along the circumference of the bearing body 1. The bearing pad one 121 and the bearing pad two 4 are used for assembling a shaft body 7 (as shown in Figure 5 ), and the shaft body 7 passes through the bearing pad one 121 and the bearing pad two 4. The outer wall of the shaft body 7 is in clearance fit with the bearing pad one 121 and the bearing pad two 4. When the bearing operates, cooling oil is filled between the shaft body 7 and the bearing pad one 121 and the bearing pad two 4, so as to form a separation between the shaft body 7 and the bearing pad one 121 and the bearing pad two 4.

[0030] The first bearing body 11 is provided with a through hole which penetrates the first bearing body 11 radially. Specifically, as shown inFigure 2 As shown, the through hole includes a countersunk hole 111 and a channel 112 located below the countersunk hole 111 . The countersunk hole 111 passes through the outer wall of the first bearing body 11 , and the channel 112 passes through the inner wall of the first bearing body 11 .

[0031] like Figure 2 As shown, a base plate 8 is mounted at the bottom of countersunk hole 111, which is inserted into and fixedly connected to the bottom of countersunk hole 111. A sleeve 2 is mounted at countersunk hole 111. Sleeve 2 is a cylindrical structure and is fixedly inserted into countersunk hole 111, with the bottom of sleeve 2 abutting against base plate 8. The first bearing body 11 is provided with a second channel 113 and a third channel 114, both of which are connected to the hydraulic system via pipelines. Sleeve 2 is provided with a first channel 21 and a second channel 22, with channel 1 21 located above channel 2 22. Channel 2 113 is connected to channel 1 21, and channel 3 114 is connected to channel 2 22.

[0032] A sliding member 5 is slidably connected to the inner wall of the sleeve 2, capable of axial movement. Specifically, the sliding member 5 divides the inner cavity of the sleeve 2 into cavity 1 23 and cavity 2 24. Cavity 1 23 communicates with channel 1 21, while cavity 2 24 communicates with channel 2 22. When the hydraulic pressure within cavity 1 23 is greater than that within cavity 2 24, the sliding member 5 moves toward the base plate 8. When the hydraulic pressure within cavity 1 23 is less than that within cavity 2 24, the sliding member 5 moves away from the base plate 8.

[0033] The first bearing body 11 is installed with an end cover 6, and the end cover 6 is threadedly connected with a rod body 61, the rod body 61 is inserted into the end cover 6, and the rod body 61 partially extends into the sliding sleeve 2. Figure 3 As shown, the rod body 61 is provided with a groove 611 to facilitate the screwing operation. Figure 2 In the illustrated position, a pressure cap 64 is mounted on top of the end cap 6, which is fixedly connected to the end cap 6. The bottom of the pressure cap 64 abuts against a spring 63, the bottom of the spring 63 abuts against a pressure plate 62, and the bottom of the pressure plate 62 abuts against the rod 61. The pressure plate 62 and the spring 63 limit the upward movement of the rod 61.

[0034] The sliding component 5 is mounted with a rod core 3, which passes through the base plate 8 and the channel 112. The end of the rod core 3, away from the channel 112, is fixedly connected to the sliding component 5. The rod core 3 is slidably connected to the base plate 8, and the rod core 3 and the base plate 8 are slidingly sealed. Specifically, a sliding sealing ring is installed between the inner wall of the base plate 8 and the outer wall of the rod core 3.

[0035] like Figure 2As shown, the rod core 3 includes an extension portion 31 and a connection portion 32. To be precise, the extension portion 31 is hingedly mounted on the rod core 3, and the rotation surface of the extension portion 31 is perpendicular to the axial direction of the bearing body 1. The connection portion 32 is fixedly mounted with a bearing shell 2 4, which is located radially inward of the inner wall of the first bearing body 11. The extension portion 31 includes an outer wall surface 311, which is a spherical surface, and the hole 112 is a tapered hole. The extension portion 31 can be inserted into the hole 112 so that the outer wall surface 311 can abut the inner wall surface of the hole 112. The movement of the sliding component 5 drives the rod core 3 to move synchronously, so that the rod core 3 abuts or leaves the inner wall surface of the hole 112. When the rod core 3 abuts the inner wall surface of the hole 112, the hole 112 is closed, and at the same time, the inner wall surface of the hole 112 forms a limit on the rod core 3.

[0036] Rod body 61 can be moved axially by screwing to adjust its fixed position. When rod body 61 is positioned above rod core 3 and outer wall surface 311 abuts inner wall surface of channel 1 112, a gap is formed between rod body 61 and rod core 3. When sliding member 5 moves upward, rod core 3 abuts rod body 61, and rod core 3 is at its upper limit position, resulting in a maximum gap between bearing shell 121 and bearing shell 2 4. Due to the large overall size and mass of the unit's bearings, increasing the gap between bearing shell 121 and bearing shell 2 4 facilitates insertion of shaft body 7 during installation, improving installation convenience.

[0037] When outer wall 311 abuts against the inner wall of channel 112, due to its spherical shape, outer wall 311 can rotate to adjust the position of bearing bush 2 4, thereby better fitting with shaft body 7 and ensuring uniformity of the gap between them. As an adaptive setting, the side of rod core 3 closest to rod body 61 is formed into an arc surface to accommodate small rotations of outer wall 311.

[0038] The arrangement of the rod body 61 prevents the rod core 3 from moving too far in the axial direction, which would cause the distance between the shaft body 7 and the bearing to be too small, thereby causing vibration of the equipment.

[0039] A method for adjusting a sliding bearing bushing comprises the following steps:

[0040] ① Such as Figure 2 As shown, the pressure cover 64 is disassembled, the pressure plate 62 and the spring 63 are taken out, and the rod body 61 is screwed to adjust the distance between the rod body 61 and the rod core 3 so that the movable distance of the rod core 3 is increased.

[0041] ②Install the pressure plate 62, spring 63, and pressure cover 64.

[0042] ③ Such as Figure 4As shown, by the boosting effect of the hydraulic system outside the channel three 114, the pressure in the channel three 114, the channel two 22 and the cavity two 24 increases, so as to push the sliding part 5 to move radially outward along the first bearing body 11, and the sliding part 5 drives the rod core 3 to move synchronously, the rod body 61 abuts against the rod core 3, and the maximum spacing state is formed between the outer wall surface 311 and the inner wall of the channel one 112, at this time, the maximum spacing is formed between the bearing shell one 121 and the bearing shell two 4, so as to facilitate the insertion and installation of the shaft body 7.

[0043] At the same time, by increasing the gap between the outer wall surface 311 and the channel one 112, the rotation range of the extension part 31 is improved, and the rotation range of the bearing shell two 4 fixed with the connecting part 32 is improved, so as to facilitate the adaptive adjustment of the bearing shell two 4 when the shaft body 7 is inserted and installed, reduce the resistance generated when the bearing shell two 4 and the shaft body 7 are installed, and facilitate the installation.

[0044] ④Repeat steps ① and ② to adjust the spacing between the rod body 61 and the rod core 3, and then adjust the spacing between the bearing shell two 4 and the shaft body 7, so as to avoid the phenomenon of burning the bearing shell two 4 caused by the too small local gap between the bearing shell two 4 and the shaft body 7, and the vibration phenomenon caused by the too large gap.

[0045] Under the running state of the shaft body 7, the rod body 61 abuts against the rod core 3.

[0046] The above only describes the preferred embodiments of the present application, and the protection scope of the present application is not limited to the above-mentioned embodiments, and any technical scheme falling within the idea of the present application belongs to the protection scope of the present application. It should be noted that for ordinary skilled in the art, some improvements and decorations without departing from the principle of the present application are also considered as the protection scope of the present application.

Claims

1. An adjustment structure for a sliding bearing bush, characterized in that: The bearing body (1) includes a first bearing body (11), the first bearing body (11) is provided with a first hole (112), and the first hole (112) passes through the inner wall of the first bearing body (11); The rod core (3) includes a rod core (3), the rod core (3) passes through the first hole (112), the rod core (3) includes an extension portion (31) and a connecting portion (32), the connecting portion (32) is fixedly mounted with a second bearing bush (4), the second bearing bush (4) is located radially inward of the inner wall of the first bearing body (11), the extension portion (31) includes an outer wall surface (311), the outer wall surface (311) is a spherical surface, the first hole (112) is a tapered hole, and the extension portion (31) can be inserted into the first hole (112) so that the outer wall surface (311) can abut against the inner wall surface of the first hole (112); The invention comprises a sliding sleeve (2), wherein the inner wall of the sliding sleeve (2) is slidably connected to a sliding component (5), wherein the sliding component (5) can move along its own axial direction, and the sliding component (5) is fixedly connected to the rod core (3), and the movement of the sliding component (5) drives the rod core (3) to move synchronously, so that the rod core (3) abuts against or leaves the inner wall surface of the channel (112).

2. The adjustment structure of a sliding bearing bush according to claim 1, characterized in that: The first bearing body (11) is provided with a second channel (113) and a third channel (114), and the second channel (113) and the third channel (114) are both connected to the hydraulic system through pipelines. The sliding sleeve (2) is provided with a first channel (21) and a second channel (22), and the second channel (113) is communicated with the first channel (21), and the third channel (114) is communicated with the second channel (22).

3. The adjustment structure of a sliding bearing bush according to claim 2, characterized in that: The sliding component (5) divides the inner cavity of the sliding sleeve (2) into cavity one (23) and cavity two (24); the cavity one (23) is connected to the channel one (21); and the cavity two (24) is connected to the channel two (22).

4. The adjustment structure of a sliding bearing bush according to claim 1, characterized in that: It also includes a rod body (61), which can move along its own axial direction to adjust its fixed position. When the outer wall surface (311) abuts against the inner wall surface of the channel (112), a distance is formed between the rod body (61) and the rod core (3).

5. The adjustment structure of a sliding bearing bush according to claim 1, characterized in that: The first bearing body (11) is provided with a countersunk hole (111), the sliding sleeve (2) is installed in the countersunk hole (111), the sliding sleeve (2) is inserted into the countersunk hole (111), the countersunk hole (111) is provided with a base plate (8), the rod core (3) passes through the base plate (8), the rod core (3) is slidably connected to the base plate (8), and the rod core (3) and the base plate (8) are slidably sealed.

6. The adjustment structure of a sliding bearing bush according to claim 5, characterized in that: A sliding sealing ring is installed between the inner wall of the bottom plate (8) and the outer wall of the rod core (3).

7. The adjustment structure of a sliding bearing bush according to claim 4, characterized in that: The first bearing body (11) is mounted with an end cover (6), and the rod body (61) is threadedly connected and inserted into the end cover (6).

8. The adjustment structure of a sliding bearing bush according to claim 7, characterized in that: One end of the rod body (61) away from the rod core (3) abuts against a pressure plate (62), one end of the pressure plate (62) away from the rod body (61) abuts against a spring (63), one end of the spring (63) away from the pressure plate (62) abuts against a pressure cover (64), and the pressure cover (64) is fixedly connected to the end cover (6).

9. The adjustment structure of a sliding bearing bush according to claim 1, characterized in that: The bearing body (1) includes a second bearing body (12), the second bearing body (12) is equipped with a bearing bushing (121), and the bearing bushing (121) and the bearing bushing (4) are distributed along the circumference of the bearing body (1).

10. The method for adjusting a sliding bearing bush according to claim 1, characterized in that: The steps include: ① Twisting the rod body (61) to adjust the distance between the rod body (61) and the rod core (3) so that the movable distance of the rod core (3) is increased; ② The sliding component (5) moves radially outward along the first bearing body (11), and the sliding component (5) drives the rod core (3) to move synchronously, the rod body (61) and the rod core (3) abut against each other, and a maximum spacing state is formed between the outer wall surface (311) and the inner wall of the channel 1 (112), and a maximum spacing is formed between the bearing bush 1 (121) and the bearing bush 2 (4); ③ Repeat step ① to adjust the distance between the rod body (61) and the rod core (3), and then adjust the distance between the bearing bush 2 (4) and the shaft body (7).

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