Sliding bearing with adjustable gap

Abstract

The utility model relates to the technical field of bearings, and provides a clearance-adjustable sliding bearing which comprises a bearing seat, a bearing cover, a lower bearing bush, an upper bearing bush and a shaft rod, the upper bearing bush and the lower bearing bush are oppositely arranged, the shaft rod is arranged between the lower bearing bush and the upper bearing bush, and an oil cup is arranged on the bearing cover. The lower bearing bush is movably arranged on the bearing seat in a manner of approaching to / far away from the upper bearing bush, and an adjusting mechanism for realizing the movement of the lower bearing bush approaching to / far away from the upper bearing bush is arranged on the bearing seat; in the running and using process of the sliding bearing, when the amplitude of the shaft lever is abnormal, the lower bearing bush moves far away from or close to the upper bearing bush through the adjusting mechanism to achieve gap adjustment, the running state of the shaft lever is adjusted through the gap adjustment, the working state of the bearing is adjusted in real time, and it is ensured that the shaft lever is always in an excellent state under the time-varying working condition.

Description

Technical Field

[0001] The utility model relates to the technical field of bearings, in particular to a sliding bearing with adjustable clearance. Background Art

[0002] Sliding bearings, as an indispensable key component in mechanical transmission systems, are widely used in various high-speed, heavy-load mechanical equipment, such as rolling mills, fans, pumps, etc. With the continuous advancement of production technology, the performance requirements for sliding bearings are also increasing.

[0003] The performance of sliding bearings depends to a large extent on the adjustment of their clearances. The size of the clearance directly affects the friction, wear and working performance of the bearings. Currently, sliding bearings usually need to be shut down when adjusting their clearances, which cannot meet the needs of mechanical equipment for adaptive adjustment according to real-time working conditions during operation. When the equipment is running, due to temperature changes, load changes or other external factors, the bearing clearance will change, thereby generating vibrations and affecting the performance of the bearings. If real-time adjustments cannot be made at this time, it may cause increased bearing wear, increased temperature, and even equipment failure.

[0004] Therefore, the utility model proposes a sliding bearing with adjustable clearance to solve the above problems. Utility Model Content

[0005] The embodiment of the utility model aims to provide a sliding bearing with adjustable clearance to solve the above-mentioned problem.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A sliding bearing with adjustable clearance comprises a bearing seat, a bearing cover, a lower bearing shell, an upper bearing shell and a shaft rod, the upper bearing shell and the lower bearing shell are arranged opposite to each other, and the shaft rod is arranged between the upper bearing shell and the lower bearing shell, the bearing cover is provided with an oil cup, the lower bearing shell can be moved away from / approaching the upper bearing shell and is arranged on the bearing seat, the bearing seat is provided with an adjustment mechanism for realizing the movement of the lower bearing shell away from / approaching the upper bearing shell, the adjustment mechanism comprises a mounting groove arranged on the bearing seat, a plurality of sliding columns arranged on the lower bearing shell, and a driven wedge block and a driving wedge block arranged in the mounting groove, the plurality of sliding columns are all sealed and penetrate the portion of the bearing seat between the mounting groove and the lower bearing shell and are fixedly connected to the driven wedge block at one end away from the lower bearing shell, the plurality of sliding columns are provided with compression springs on the column sections between the driven wedge block and the mounting groove wall, the inclined side of the driven wedge block is abutted against the inclined side of the driving wedge block, and a telescopic member for driving the driving wedge block to move away from / approaching the driven wedge block is provided in the mounting groove.

[0008] In an optional solution: the telescopic member is an electric telescopic rod.

[0009] In an optional solution: it also includes a monitoring mechanism for real-time monitoring of the vibration state of the shaft, and the adjusting mechanism cooperates with the monitoring mechanism through a controller. When the monitoring mechanism detects that the vibration amplitude of the shaft exceeds the set value, it feedbacks a signal and drives the lower bearing to move through the adjusting mechanism to adaptively adjust the gap between the shaft and the bearing.

[0010] In an optional solution: the monitoring mechanism is composed of an annular member arranged on the bearing seat and a plurality of sensing members uniformly arranged on the annular member, the shaft rod passes through the inner side of the annular member, the sensing member includes an insert sleeve and an insert rod movably inserted on the insert sleeve, one end of the insert rod away from the insert sleeve is pressed against the side surface of the shaft rod, a compression spring is provided inside the insert sleeve, and one end of the insert rod located inside the insert sleeve is provided with a distance sensor for real-time monitoring of the distance between the insert rod and the bottom of the insert sleeve.

[0011] In an optional solution: a ball is provided at one end of the insertion rod that is pressed against the side surface of the shaft rod.

[0012] Compared with the prior art, the beneficial effects of the embodiments of the present invention are as follows:

[0013] During the operation of the sliding bearing, when the amplitude of the shaft is abnormal, the telescopic member is controlled to telescope and drive the wedge block to move away from / towards the driven wedge block. Under the action of the inclined side of the driven wedge block and the inclined side of the driving wedge block and the compression spring, the lower bearing shell is driven to move away from / towards the upper bearing shell to achieve clearance adjustment. The operating state of the shaft is adjusted through the clearance adjustment, and the working state of the bearing is adjusted in real time to ensure that the shaft is always in good condition under time-varying working conditions.

[0014] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings herein are incorporated into and constitute a part of the specification to illustrate embodiments consistent with the present application and are used together with the specification to explain the principles of the present application. At the same time, these drawings and text descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application for those skilled in the art by referring to specific embodiments.

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] Figure 2 It is a front view between the bearing seat and the monitoring mechanism in the utility model.

[0018] Figure 3 It is a structural schematic diagram of the monitoring mechanism in the utility model.

[0019] Figure 4 It is a structural schematic diagram of the induction component in the utility model.

[0020] Notes on the figure numbers: 1-bearing seat, 2-lower bearing, 3-shaft rod, 4-upper bearing, 5-bearing cover, 6-oil cup, 7-sliding column, 8-compression spring, 9-mounting groove, 10-telescopic member, 11-driven wedge block, 12-driving wedge block, 13-annular member, 14-sensing member, 1401-insert cylinder, 1402-insert rod, 1403-extrusion spring, 1404-distance sensor, 1405-ball. DETAILED DESCRIPTION

[0021] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0022] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0023] See also Figure 1A sliding bearing with adjustable clearance comprises a bearing seat 1, a bearing cover 5, a lower bearing shell 2, an upper bearing shell 4 and a shaft rod 3, wherein the upper bearing shell 4 is arranged opposite to the lower bearing shell 2, and the shaft rod 3 is arranged between the bearing shell 4 above the lower bearing shell 2, an oil cup 6 is arranged on the bearing cover 5, the lower bearing shell 2 can move away from / approach the upper bearing shell 4 and is arranged on the bearing seat 1, and an adjustment mechanism for realizing the movement of the lower bearing shell 2 away from / approaching the upper bearing shell 4 is arranged on the bearing seat 1, and the adjustment mechanism comprises a mounting groove 9 arranged on the bearing seat 1, a plurality of sliding columns 7 arranged on the lower bearing shell 2 and A driven wedge block 11 and a driving wedge block 12 are arranged in the mounting groove 9, and multiple sliding columns 7 are sealed and penetrate the bearing seat 1 between the mounting groove 9 and the lower bearing shell 2, and the end away from the lower bearing shell 2 is fixedly connected to the driven wedge block 11. Multiple sliding columns 7 are located between the driven wedge block 11 and the groove wall of the mounting groove 9. A compression spring 8 is sleeved on the column section, and the inclined side of the driven wedge block 11 is against the inclined side of the driving wedge block 12. The mounting groove 9 is provided with a telescopic part 10 for driving the driving wedge block 12 to move away from / close to the driven wedge block 11.

[0024] During the operation of the sliding bearing, when the amplitude of the shaft rod 3 is abnormal, the telescopic member 10 is controlled to telescope and drive the wedge block 12 to move away from / closer to the driven wedge block 11. Under the action of the inclined side of the driven wedge block 11 and the inclined side of the driving wedge block 12 and the compression spring 8, the lower bearing shell 2 is driven to move away from / closer to the upper bearing shell 4 to achieve clearance adjustment. The operating state of the shaft rod 3 is adjusted through the clearance adjustment, and the working state of the bearing is adjusted in real time to ensure that the shaft rod 3 is always in good condition under time-varying working conditions.

[0025] Furthermore, the telescopic member 10 is an electric telescopic rod.

[0026] See also Figure 2 to Figure 4 In one embodiment of the utility model, it also includes a monitoring mechanism for real-time monitoring of the vibration state of the shaft rod 3. The adjusting mechanism cooperates with the monitoring mechanism through a controller. When the monitoring mechanism detects that the vibration amplitude of the shaft rod 3 exceeds the set value, it feedbacks a signal and drives the lower bearing 2 to move through the adjusting mechanism to adaptively adjust the gap between the shaft rod 3 and the bearing.

[0027] It should be noted that the cooperation between the regulating mechanism and the monitoring mechanism through the controller is an existing mature control technology and does not present any technical obstacles, so it will not be elaborated here.

[0028] In this embodiment, during the operation of the sliding bearing, the vibration state of the shaft rod 3 is monitored in real time by a monitoring mechanism. When the monitoring mechanism detects that the vibration amplitude of the shaft rod 3 exceeds the set value, a feedback signal is sent to the controller. After receiving the feedback signal, the controller controls the adjustment mechanism to drive the lower bearing 2 to move away from / closer to the upper bearing 4 for gap adjustment. After the adjustment, the operating state of the shaft rod 3 continues to be monitored by the monitoring mechanism for automatic gap adjustment.

[0029] Furthermore, in this embodiment, the controller model is S7-1500.

[0030] Furthermore, in this embodiment, the monitoring mechanism is composed of an annular member 13 arranged on the bearing seat 1 and a plurality of sensing members 14 uniformly arranged on the annular member 13 in a circumferential direction. The shaft rod 3 passes through the inner side of the annular member 13. The sensing member 14 includes an insert sleeve 1401 and an insert rod 1402 movably inserted on the insert sleeve 1401. One end of the insert rod 1402 away from the insert sleeve 1401 is pressed against the side of the shaft rod 3. A spring 1403 is squeezed inside the insert sleeve 1401. One end of the insert rod 1402 located inside the insert sleeve 1401 is provided with a distance sensor 1404 for real-time monitoring of the distance between the insert rod 1402 and the bottom of the insert sleeve 1401.

[0031] It should be noted that when the insertion rod 1402 is against the side of the shaft rod 3, the extrusion spring 1403 is in a certain compression state, ensuring that the insertion rod 1402 can be extended and retracted within an appropriate range. In addition, during the gap adjustment process, the movement of the shaft rod 3 will cause the sensor 14 to extend and retract to varying degrees. At this time, the extension and retraction changes of the sensor 14 are not included in the vibration amplitude setting range. Only after the gap adjustment is completed, the sensor 14 is involved in monitoring based on the current length state.

[0032] When the shaft 3 vibrates, the insertion rod 1402 will slide along the insertion tube 1401, thereby changing the overall length of the sensing member 14 (shortening or lengthening), that is, the distance between the insertion rod 1402 and the bottom of the insertion tube 1401 will change, and the distance sensor 1404 will sense it in real time. When the length change of any sensing member 14 exceeds the set value, it means that the amplitude of the shaft 3 is too large, and a signal is fed back to the controller. After receiving the feedback signal, the controller controls the adjustment mechanism to drive the lower bearing 2 to move away from / closer to the upper bearing 4 for gap adjustment, so as to adjust and improve the operating state of the shaft 3.

[0033] Furthermore, in this embodiment, a ball 1405 is provided at one end of the insertion rod 1402 that is pressed against the side of the shaft rod 3. By providing the ball 1405, the sliding friction is converted into rolling friction when the end of the insertion rod 1402 is pressed against the side of the shaft rod 3, thereby reducing the interference with the rotation of the shaft rod 3.

[0034] Furthermore, in this embodiment, the distance sensor 1404 model is LTD-0340NO.

[0035] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

[0036] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A sliding bearing with adjustable clearance, comprising a bearing seat (1), a bearing cover (5), a lower bearing shell (2), an upper bearing shell (4) and a shaft rod (3), wherein the upper bearing shell (4) is arranged opposite to the lower bearing shell (2), and the shaft rod (3) is arranged between the lower bearing shell (2) and the upper bearing shell (4), and an oil cup (6) is arranged on the bearing cover (5), characterized in that: The lower bearing shell (2) can move away from / towards the upper bearing shell (4) and is arranged on the bearing seat (1). The bearing seat (1) is provided with an adjustment mechanism for realizing the movement of the lower bearing shell (2) away from / towards the upper bearing shell (4). The adjustment mechanism comprises a mounting groove (9) arranged on the bearing seat (1), a plurality of sliding columns (7) arranged on the lower bearing shell (2), and a driven wedge block (11) and a driving wedge block (12) arranged in the mounting groove (9). The plurality of sliding columns (7) are sealed and penetrate the bearing seat (1) and are in a The portion between the mounting groove (9) and the lower bearing bush (2) and the end away from the lower bearing bush (2) is fixedly connected to the driven wedge block (11); a plurality of sliding columns (7) are sleeved with compression springs (8) on the column sections located between the driven wedge block (11) and the groove wall of the mounting groove (9); the inclined side of the driven wedge block (11) abuts against the inclined side of the driving wedge block (12); and a telescopic member (10) for driving the driving wedge block (12) to move away from / close to the driven wedge block (11) is provided in the mounting groove (9).

2. The clearance-adjustable sliding bearing according to claim 1, characterized in that: The telescopic member (10) is an electric telescopic rod.

3. The clearance-adjustable sliding bearing according to claim 1, characterized in that: It also includes a monitoring mechanism for real-time monitoring of the vibration state of the shaft (3), wherein the regulating mechanism cooperates with the monitoring mechanism through a controller, and when the monitoring mechanism detects that the vibration amplitude of the shaft (3) exceeds a set value, it feeds back a signal and drives the lower bearing (2) to move through the regulating mechanism to adaptively adjust the gap between the shaft (3) and the bearing.

4. The clearance-adjustable sliding bearing according to claim 3, characterized in that: The monitoring mechanism is composed of an annular member (13) arranged on the bearing seat (1) and a plurality of sensing members (14) uniformly arranged on the annular member (13). The shaft (3) passes through the inner side of the annular member (13). The sensing member (14) includes an insert cylinder (1401) and an insert rod (1402) movably inserted on the insert cylinder (1401). One end of the insert rod (1402) away from the insert cylinder (1401) is pressed against the side of the shaft (3). A spring (1403) is squeezed inside the insert cylinder (1401). One end of the insert rod (1402) located inside the insert cylinder (1401) is provided with a distance sensor (1404) for real-time monitoring of the distance between the insert rod (1402) and the bottom of the insert cylinder (1401).

5. The clearance-adjustable sliding bearing according to claim 4, characterized in that: A ball (1405) is provided at one end of the insertion rod (1402) that is pressed against the side of the shaft rod (3).

Images