Anti-locking sliding bearing

Abstract

The utility model relates to the technical field of bearings, and provides an anti-locking sliding bearing which comprises a bearing seat, a penetrating hole formed in the bearing seat and a shaft rod penetrating through the penetrating hole, an annular groove is formed in the bearing seat, a plurality of bearing bushes are arranged on the inner side of the penetrating hole, each bearing bush is provided with an adjusting rod penetrating through the inner side of the annular groove in a sealed mode, and the adjusting rods are arranged on the inner side of the annular groove. A rotatable adjusting ring is arranged in the annular groove, and adjusting blocks in one-to-one correspondence with the adjusting rods are arranged on the adjusting ring; under the high-temperature working condition, the shaft rod is heated and expanded to extrude the bearing bushes, the contact force between the shaft rod and the corresponding bearing bushes is sensed in real time through the contact force sensors, and when any contact force sensor senses that the contact force exceeds the set value range, the adjusting ring rotates; the adjusting ring rotates to drive the multiple adjusting blocks to revolve, so that the multiple bearing bushes move away from the shaft rod till the contact force recovers to the set range, and the situation that the bearing is stuck due to the fact that the contact force between the shaft rod and the bearing bushes is too large is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of bearings, in particular to an anti-jamming sliding bearing. Background Art

[0002] As an important component of mechanical transmission systems, sliding bearings are widely used in various mechanical equipment. They achieve force transmission and motion conversion through sliding friction between the shaft and the bearing.

[0003] Under high temperature conditions, the shaft of existing sliding bearings tends to become thicker due to thermal expansion. This expansion phenomenon causes the gap between the shaft and the bearing to become smaller, thereby increasing the contact force between the two. Although the current bearing design has a certain degree of elasticity, the elasticity range is small. It is difficult to cope with the expansion changes of the shaft under high temperature conditions relying solely on the elasticity of the bearing itself. In addition, the bearing may be deformed or damaged under high temperature conditions, resulting in a decrease or loss of its elastic performance, which in turn causes the bearing to get stuck.

[0004] Therefore, the utility model proposes an anti-seizure sliding bearing to solve the above problem. Utility Model Content

[0005] The embodiment of the utility model aims to provide a sliding bearing that prevents jamming, so as 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 that prevents getting stuck comprises a bearing seat, a through hole arranged on the bearing seat and a shaft rod passing through the through hole, the bearing seat is provided with an annular groove concentric with the through hole, the inner side of the through hole is provided with a plurality of bearing shells that are evenly distributed in the circumference and adapted to the shaft rod, each of the bearing shells is provided with an adjustment rod that seals and passes through the inner side of the annular groove, a rotatable adjustment ring is provided in the annular groove, an adjustment block corresponding to the adjustment rod is provided on the adjustment ring, the side of the adjustment block facing the shaft rod is arc-shaped and provided with the adjustment block, the end of the adjustment rod away from the bearing shell is provided with a convex button that is stuck in the adjustment block, and a contact force sensor is provided between the adjustment rod and the bearing shell.

[0008] In an optional solution: a rack is provided on the adjusting ring, and a rotatable gear meshing with the rack is provided in the annular groove.

[0009] In an optional solution: a driving member for driving the gear to rotate is provided on the bearing seat, and the driving member and the pressure sensor are linked through a controller.

[0010] In an optional solution: a notch connected to the annular groove is provided on the bearing seat, a telescopic member is disposed in the notch, and a brake plate for locking the adjusting ring is disposed at the telescopic end of the telescopic member.

[0011] In an optional solution, evenly distributed inner concave points are provided at a position of the adjustment ring close to the notch.

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

[0013] Under high temperature conditions, the shaft expands due to heat and squeezes the bearing. The contact force between the shaft and the corresponding bearing is sensed in real time by the contact force sensor. When any contact force sensor senses that the contact force exceeds the set value range, the adjustment ring rotates. The rotation of the adjustment ring drives multiple adjustment blocks to revolve, so that multiple bearings move away from the shaft until the contact force returns to the set range, avoiding excessive contact force between the shaft and the bearing that may cause the bearing to get stuck.

[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 The utility model is a schematic diagram of the arrangement between the central bearing, the contact force sensor and the adjusting rod.

[0018] Figure 3 It is a schematic diagram of the arrangement between the adjustment ring and multiple adjustment blocks in the utility model.

[0019] Notes on the accompanying drawings: 1-bearing seat, 2-adjusting ring, 3-adjusting block, 4-adjusting rod, 5-bearing shell, 6-mounting hole, 7-rack, 8-gear, 9-shaft rod, 10-annular groove, 11-brake plate, 12-telescopic part, 13-card slot, 14-inner concave point, 15-convex button, 16-contact force sensor. DETAILED DESCRIPTION

[0020] 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.

[0021] 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.

[0022] See also Figure 1 to Figure 3 , an anti-stuck sliding bearing, comprising a bearing seat 1, a through hole 6 provided on the bearing seat 1 and a shaft 9 passing through the through hole 6, the bearing seat 1 is provided with an annular groove 10 concentric with the through hole 6, the inner side of the through hole 6 is provided with a plurality of bearing shells 5 evenly distributed in the circumference and adapted to the shaft 9, each of the bearing shells 5 is provided with an adjusting rod 4 that seals and passes through the inner side of the annular groove 10, a rotatable adjusting ring 2 is provided in the annular groove 10, an adjusting block 3 corresponding to the adjusting rod 4 is provided on the adjusting ring 2, the side of the adjusting block 3 facing the shaft 9 is arc-shaped and provided with the adjusting block 3, the end of the adjusting rod 4 away from the bearing shell 5 is provided with a convex button 15 that is stuck in the adjusting block 3, and a contact force sensor 16 is provided between the adjusting rod 4 and the bearing shell 5.

[0023] The shaft 9 is supported by multiple bearings 5. Under high temperature conditions, the shaft 9 expands and squeezes the bearings 5 ​​due to the heat. The contact force between the shaft 9 and the corresponding bearings 5 ​​is sensed in real time by the contact force sensor 16. When any contact force sensor 16 senses that the contact force exceeds the set value range, the adjustment ring 2 rotates. The rotation of the adjustment ring 2 drives the multiple adjustment blocks 3 to revolve, so that the multiple bearings 5 ​​move away from the shaft 9 until the contact force returns to the set range, thereby avoiding excessive contact force between the shaft 9 and the bearing 5 and causing the bearing to get stuck.

[0024] It should be noted that Figure 1To explain, when the shaft 9 expands due to heat, the adjusting ring 2 rotates counterclockwise so that the multiple bearings 5 ​​move away from the shaft 9. Conversely, when the shaft 9 cools down and recovers, the adjusting ring 2 rotates clockwise again so that the multiple bearings 5 ​​move toward the shaft 9, so that the contact force between the bearings 5 ​​and the shaft 9 is always within the set range, ensuring the normal operation of the bearings.

[0025] Furthermore, the contact force sensor 16 is of model DYLY-103.

[0026] See also Figure 1 In one embodiment of the utility model, a rack 7 is provided on the adjusting ring 2, and a gear 8 which is rotatable and meshes with the rack 7 is provided in the annular groove 10;

[0027] The bearing seat 1 is provided with a driving member (not shown in the figure) for driving the gear 8 to rotate, and the driving member and the contact force sensor 16 are linked via a controller (the driving member is a rotating device such as a motor and a reduction motor in the prior art, and the linkage between the driving member and the contact force sensor 16 via a controller is an existing mature control technology and does not involve any technical obstacles, so it will not be elaborated here).

[0028] In this embodiment, when the contact force sensor 16 senses that the contact force between the bearing 5 and the shaft 9 exceeds the set value range, it sends a signal to the controller. After receiving the signal, the controller controls the driving member to start, and drives the gear 8 to rotate through the driving member. Under the meshing action of the gear 8 and the rack 7, the gear 8 rotates to drive the adjustment ring 2 to rotate, thereby realizing the movement and adjustment of multiple bearings 5.

[0029] See also Figure 1 and Figure 3 In one embodiment of the utility model, the bearing seat 1 is provided with a notch connected to the annular groove 10, a telescopic member 12 is provided in the notch (the telescopic member 12 can be a hydraulic cylinder, a cylinder, an electric telescopic rod, etc., all of which belong to the existing mature technology, so they are not described here), and a brake plate 11 for locking the adjusting ring 2 is provided at the telescopic end of the telescopic member 12;

[0030] The adjusting ring 2 is provided with evenly distributed inner concave points 14 at positions close to the notches.

[0031] In this embodiment, when multiple bearings 5 ​​need to be moved and adjusted, the telescopic member 12 contracts to separate the brake plate 11 from the adjustment ring 2. After the multiple bearings 5 ​​are adjusted into place, the telescopic member 12 extends again to make the brake plate 11 tightly against the adjustment ring 2, thereby locking the adjustment ring 2 and ensuring the stability of the bearing operation. The purpose of setting the inner protrusion 14 is to increase the friction when the brake plate 11 is against the adjustment ring 2 and improve the locking firmness.

[0032] 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.

[0033] 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. An anti-seizure sliding bearing, comprising a bearing seat (1), a through hole (6) provided on the bearing seat (1), and a shaft (9) passing through the through hole (6), characterized in that: The bearing seat (1) is provided with an annular groove (10) which is concentric with the insertion hole (6); the inner side of the insertion hole (6) is provided with a plurality of bearing shells (5) which are evenly distributed in the circumference and adapted to the shaft (9); each of the bearing shells (5) is provided with an adjustment rod (4) which is sealed and passes through the inner side of the annular groove (10); a rotatable adjustment ring (2) is provided in the annular groove (10); the adjustment ring (2) is provided with an adjustment block (3) which corresponds to the adjustment rod (4) one by one; the side of the adjustment block (3) facing the shaft (9) is arc-shaped and is provided with the adjustment block (3); the end of the adjustment rod (4) away from the bearing shell (5) is provided with a convex button (15) which is clamped in the adjustment block (3); a contact force sensor (16) is provided between the adjustment rod (4) and the bearing shell (5).

2. The anti-seizure sliding bearing according to claim 1, characterized in that: The adjusting ring (2) is provided with a rack (7), and the annular groove (10) is provided with a gear (8) which is rotatable and meshes with the rack (7).

3. The anti-seizure sliding bearing according to claim 2, characterized in that: The bearing seat (1) is provided with a driving member for driving the gear (8) to rotate, and the driving member and the pressure sensor (16) are linked via a controller.

4. The anti-seizure sliding bearing according to claim 1, characterized in that: The bearing seat (1) is provided with a notch which is in communication with the annular groove (10), a telescopic member (12) is disposed in the notch, and a stopper (11) for locking the adjustment ring (2) is disposed at the telescopic end of the telescopic member (12).

5. The anti-seizure sliding bearing according to claim 4, characterized in that: The adjusting ring (2) is provided with evenly distributed inner concave points (14) at positions close to the notches.

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