Device for detecting service life of solid self-lubricating bearing

Abstract

The utility model relates to a device for detecting the service life of a solid self-lubricating bearing, which comprises an upper loading mechanism, a lower base, an upper flange and a lower flange, wherein the upper flange and the lower flange are arranged between the loading mechanism and the base, and the upper flange is provided with a test bearing through a middle connecting mechanism; a tooth structure is arranged on the inner wall of the middle connecting mechanism, a driving device is arranged in the center of the base, and an output shaft of the driving device is in tooth meshing with the middle connecting mechanism to enable the driving device to provide power to drive the middle connecting mechanism to rotate. The device provided by the utility model fills the technical blank that the original large solid self-lubricating bearing is lack of test equipment for detecting the bearing; the whole device is ingenious in structural design, not only can detect the service life of the bearing, but also optimizes the detection of the service life of the bearing from the economic cost through a specially designed bearing installation mode, and reduces the production cost for enterprises.

Description

Technical Field

[0001] The utility model relates to an auxiliary device for bearing life detection, in particular to a device for detecting the life of a solid self-lubricating bearing, and belongs to the technical field of bearing detection. Background Art

[0002] Due to the large size of large solid self-lubricating bearings and their structural differences from traditional rolling bearings, there is currently no test equipment to detect such bearings. Traditionally, scaled-down samples are used to simulate related tests, which cannot accurately reflect the actual test results of large-size sliding bearings. Summary of the Invention

[0003] In view of the technical defect of the above-mentioned solid self-lubricating bearings that life detection cannot be achieved, the purpose of the present utility model is to provide a device for detecting the life of solid self-lubricating bearings, thereby achieving the purpose of effectively measuring the life of solid self-lubricating bearings.

[0004] To achieve the above-mentioned object, the technical solution adopted by the present invention is: a device for testing the life of a solid self-lubricating bearing, comprising: an upper loading mechanism, a lower base, an upper flange and a lower flange arranged between the loading mechanism and the base, wherein the upper flange is mounted with a test bearing via an intermediate connecting mechanism; a tooth structure is provided on the inner wall of the intermediate connecting mechanism, a driving device is provided at the center of the base, an output shaft of the driving device is engaged with the teeth of the intermediate connecting mechanism, and the driving device provides power to drive the intermediate connecting mechanism to rotate;

[0005] Furthermore, the upper loading mechanism includes: an oil cylinder, a loading seat located at the lower part of the oil cylinder, and the oil cylinder is installed and supported by support columns distributed in the front, back, left, and right directions of the base to ensure stability;

[0006] Furthermore, an extension portion is provided at the bottom of the loading seat at the lower part of the oil cylinder, the outer diameter of the upper flange matches the extension portion of the loading seat and the upper flange is excessively connected to the loading seat by bolts;

[0007] Furthermore, a plurality of bolt holes matching the connection holes of the lower flange are evenly arranged on the base, and the lower flange is fixedly connected to the upper surface of the base by bolts;

[0008] Furthermore, a test bearing is provided between the upper end surface of the lower flange and the intermediate connecting mechanism;

[0009] The test bearing adopts a three-row cylindrical roller bearing, the outer ring of the test bearing is fixed to the lower flange by bolts, and the inner ring is fixed to the intermediate connection mechanism by bolts;

[0010] Furthermore, the test bearing includes a radial self-lubricating bearing and an axial self-lubricating bearing; the intermediate connection mechanism includes: a connection plate and a connection sleeve connected to the top of the connection plate, and the connection sleeve and the connection plate are fixed together by bolts;

[0011] Furthermore, the teeth of the intermediate connecting mechanism are provided on the inner wall of the connecting disk;

[0012] Furthermore, the inner ring of the test bearing is connected to the connecting plate.

[0013] Furthermore, a mounting portion for a radial self-lubricating bearing is formed between the inner diameter of the upper flange and the connecting sleeve, and a mounting portion for an axial self-lubricating bearing is formed between the lower end surface of the upper flange and the upper end surface of the connecting plate;

[0014] Furthermore, the radial self-lubricating bearing is fixed to the upper flange by a hexagon socket cylindrical head screw; during operation, the radial self-lubricating bearing is fixed to the upper flange, and the connecting sleeve and the connecting disk in the intermediate connecting mechanism rotate simultaneously; it is explained here that the inner circumference of the radial self-lubricating bearing contacts the outer circumference of the connecting sleeve without being fixed, forming a sliding contact surface; similarly, the axial self-lubricating bearing is fixed to the connecting disk by a hexagon socket cylindrical head screw, and the upper surface of the axial self-lubricating bearing contacts the upper flange, forming a sliding contact surface;

[0015] Furthermore, the radial self-lubricating bearing and the axial self-lubricating bearing are both segmented disc structures, each composed of 12 circular arc bearing blocks;

[0016] In this solution, when testing the life of the solid self-lubricating bearing assembly, cost issues are taken into consideration, the size of the axial loading cylinder is reduced, and the power of the drive device is reduced. The technical means adopted are: the radial self-lubricating bearing is fully loaded in the device, and the axial self-lubricating bearing is installed in a quarter area of ​​the device;

[0017] Furthermore, the quarter area installation is to set three circumferentially dispersed arc bearing blocks and each two adjacent arc bearing blocks are set at an angle of 120 degrees.

[0018] Furthermore, the driving device can be a driving reducer in the prior art;

[0019] Furthermore, the output end of the output shaft of the driving reducer is sleeved with a gear sleeve, and a gear is provided on the outer periphery of the gear sleeve and cooperates with the teeth of the connecting disk of the intermediate connecting mechanism.

[0020] The operating principle of the device for detecting life using the above scheme is as follows:

[0021] During the test, it is necessary to apply a load to the bearing. The bearing load is applied to the loading seat through the oil cylinder and transmitted to the radial self-lubricating bearing and the axial self-lubricating bearing through the upper flange. By starting the driving reducer at the bottom, the gears of the reducer output shaft and the intermediate connecting mechanism are matched to drive the connecting sleeve to rotate; and then the axial self-lubricating bearing rotates to achieve the purpose of measuring the life of the solid self-lubricating bearing.

[0022] The beneficial effects of the device for detecting the life of solid self-lubricating bearings using the utility model are: filling the technical gap of the original large solid self-lubricating bearings that lacked test equipment for detecting such bearings; the entire device structure is cleverly designed, which not only can realize the detection of bearing life, but also through the specially designed bearing installation method, it can further optimize the detection of bearing life from an economic cost perspective, thereby reducing production costs for enterprises. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a structural diagram of a device for detecting the life of a solid self-lubricating bearing according to the present invention.

[0024] Figure 2 for Figure 1 A magnified view of the local structure.

[0025] Figure 3 for Figure 1 AA section view.

[0026] In the figure, 1, base, 2, upper flange, 3, lower flange, 4, oil cylinder, 5, loading seat, 6, support column, 5.1, extension, 7, test bearing, 8, radial self-lubricating bearing, 9, axial self-lubricating bearing, 10, connecting plate, 11, connecting sleeve, 12, arc bearing block, 13, driving reducer, 14, gear sleeve, 15, hexagon socket head screw. DETAILED DESCRIPTION

[0027] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of specific embodiments of the present invention is provided in conjunction with the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] like Figure 1-3The device for testing the life of a solid self-lubricating bearing shown in the figure comprises: an upper loading mechanism, a lower base 1, an upper flange 2 and a lower flange 3 disposed between the loading mechanism and the base 1, wherein the upper flange 2 is mounted with a test bearing via an intermediate connecting mechanism; a tooth structure is disposed on the inner wall of the intermediate connecting mechanism, and a drive device is disposed at the center of the base 1. The output shaft of the drive device meshes with the intermediate connecting mechanism, so that the drive device provides power to drive the intermediate connecting mechanism to rotate;

[0029] The upper loading mechanism includes: a cylinder 4, a loading seat 5 located below the cylinder 4, and the cylinder 4 is installed and supported by support columns 6 distributed in the front, back, left, and right directions of the base 1 to ensure stability;

[0030] An extension portion 5.1 is provided at the bottom of the loading seat 5 at the lower part of the oil cylinder 4. The outer diameter of the upper flange 2 matches the extension portion 5.1 of the loading seat 5 and the upper flange 2 is transitionally connected to the loading seat 5 by bolts.

[0031] The base 1 is evenly provided with a plurality of bolt holes matching the connection holes of the lower flange 3, and the lower flange 3 is fixedly connected to the upper surface of the base 1 by bolts;

[0032] A test bearing 7 is also provided between the upper end surface of the lower flange 3 and the intermediate connecting mechanism;

[0033] The test bearing 7 adopts a three-row cylindrical roller bearing, the outer ring of the test bearing 7 is fixed to the lower flange 3 by bolts, and the inner ring is fixed to the intermediate connection mechanism by bolts;

[0034] The test bearing includes a radial self-lubricating bearing 8 and an axial self-lubricating bearing 9; the intermediate connection mechanism includes: a connecting plate 10 and a connecting sleeve 11 connected to the upper part of the connecting plate 10, and the connecting sleeve 11 and the connecting plate 10 are fixed together by bolts;

[0035] The mounting portion of the radial self-lubricating bearing 8 is formed between the inner diameter of the upper flange 2 and the connecting sleeve 11, and the mounting portion of the axial self-lubricating bearing 9 is formed between the lower end surface of the upper flange 2 and the upper end surface of the connecting plate 10;

[0036] The radial self-lubricating bearing 8 is fixed to the upper flange 2 by means of a hexagon socket cylindrical head screw 15. During operation, the radial self-lubricating bearing 8 is fixed to the upper flange 2, and the connecting sleeve 11 and the connecting disc 10 in the intermediate connecting mechanism rotate simultaneously. It is explained here that the inner circumference of the radial self-lubricating bearing 8 contacts the outer circumference of the connecting sleeve 11 without being fixed, forming a sliding contact surface. Similarly, the axial self-lubricating bearing 9 is fixed to the connecting disc 10 by means of a hexagon socket cylindrical head screw 15, and the upper surface of the axial self-lubricating bearing 9 contacts the upper flange 2, forming a sliding contact surface.

[0037] In this embodiment, the cross section of the radial self-lubricating bearing 8 is fixed to the upper flange 2 by two upper and lower hexagon socket head screws 15. The number of hexagon socket head screws 15 is adjusted according to the bearing specifications to ensure the stability of the bearing fixation. A hexagon socket head screw 15 is set in the center of the cross section of the axial self-lubricating bearing 9.

[0038] The radial self-lubricating bearing 8 and the axial self-lubricating bearing 9 are both segmented disc structures, each of which is composed of 12 circular arc bearing blocks 12;

[0039] In this solution, when testing the life of the solid self-lubricating bearing assembly, taking into account cost issues, the size of the axial loading cylinder is reduced, and the power of the driving device is reduced. The technical means adopted are: the radial self-lubricating bearing 8 is fully loaded in the device, and the axial self-lubricating bearing 9 is installed in a quarter area of ​​the device;

[0040] The quarter area installation is to set three circumferentially dispersed arc bearing blocks 12 and set each two adjacent arc bearing blocks 12 at an angle of 120 degrees.

[0041] The driving device can be a driving reducer 13 in the prior art;

[0042] The output end of the output shaft of the driving reducer 13 is sleeved with a gear sleeve 14 , and a gear is provided on the outer periphery of the gear sleeve 14 and cooperates with the teeth of the connecting disk 10 of the intermediate connecting mechanism.

[0043] The operating principle of the device for detecting life using the above scheme is as follows:

[0044] During the test, it is necessary to apply a load to the bearing. The bearing load is applied to the loading seat 5 through the oil cylinder 4 and transmitted to the radial self-lubricating bearing 8 and the axial self-lubricating bearing 9 through the upper flange 2. By starting the driving reducer 13 at the bottom, the output shaft of the reducer 13 is gear-matched with the intermediate connecting mechanism to drive the connecting sleeve 11 to rotate; and then the axial self-lubricating bearing 9 is driven to rotate, so as to achieve the purpose of measuring the life of the solid self-lubricating bearing.

[0045] In the principle process described above, since this solution is used to detect solid self-lubricating bearings (the difference from traditional rolling bearings is that there are no rolling elements inside, and they work through friction between the outer surface of the bearing and the contact surface of the equipment), the radial self-lubricating bearings are fixed to the upper flange during operation and do not rotate.

[0046] It should be noted that the upper flange 2 and lower flange 3 of the device are both transition pieces, connected to the loading part of the device. Since the bearing life test requires load application, they are connected to the loading seat 5 through this transition piece. The upper flange 2 is connected to the loading seat 5 at the top of the device, and the lower flange 3 is connected to the base 1 at the bottom of the device.

[0047] The arrangement of the test bearing 7 mentioned above, since the device is driven by an intermediate drive, the upper and lower flanges are fixed, because there is a bearing to be tested on the upper part of the device, and the lower part of the device needs to be provided with a test bearing 7 to adjust the device load;

[0048] The test bearing 7 is a waste bearing that has been tested.

[0049] The above-mentioned axial test bearing 9 is installed in an area one-quarter of the entire bearing. If it is fully filled, the loading capacity of the device will be particularly large, which will increase the cost. Therefore, from the perspective of cost saving, it is possible to consider partially installing the axial test bearing, thereby achieving the purpose of saving corporate costs.

[0050] The radial and axial self-lubricating bearings in the utility model are rotated by the device of the scheme. When the axial and radial self-lubricating bearings pass the rotation process without abnormal noise and the wear amount detected after being taken off the machine reaches a certain standard, it is determined that the life test is qualified; wherein, the wear amount can adopt the prescribed national standard.

[0051] 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 to 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 device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0052] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0053] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0054] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

Claims

1. A device for detecting the life of a solid self-lubricating bearing, characterized in that: include: An upper loading mechanism, a lower base, an upper flange and a lower flange arranged between the loading mechanism and the base, wherein the upper flange is mounted with a test bearing via an intermediate connecting mechanism; A tooth structure is provided on the inner wall of the intermediate connecting mechanism, a driving device is provided at the center of the base, and an output shaft of the driving device is engaged with the teeth of the intermediate connecting mechanism so that the driving device provides power to drive the intermediate connecting mechanism to rotate.

2. The device for detecting the life of a solid self-lubricating bearing according to claim 1, characterized in that: The upper loading mechanism includes: an oil cylinder and a loading seat located at the lower part of the oil cylinder. The oil cylinder is installed and supported by support columns distributed in the front, back, left and right directions of the base.

3. The device for detecting the life of a solid self-lubricating bearing according to claim 1, characterized in that: An extension portion is provided at the bottom of the loading seat at the lower part of the oil cylinder. The outer diameter of the upper flange matches the extension portion of the loading seat and the upper flange is excessively connected to the loading seat through bolts.

4. The device for detecting the life of a solid self-lubricating bearing according to claim 1, characterized in that: A plurality of bolt holes matching the lower flange connection holes are evenly arranged on the base, and the lower flange is fixedly connected to the upper surface of the base by bolts.

5. The device for detecting the life of a solid self-lubricating bearing according to claim 1, characterized in that: The test bearing includes a radial self-lubricating bearing and an axial self-lubricating bearing; the intermediate connection mechanism includes: a connection plate and a connection sleeve connected to the top of the connection plate, and the connection sleeve and the connection plate are fixed together by bolts.

6. The device for detecting the life of a solid self-lubricating bearing according to claim 5, characterized in that: A mounting portion for a radial self-lubricating bearing is formed between the inner diameter of the upper flange and the connecting sleeve, and a mounting portion for an axial self-lubricating bearing is formed between the lower end surface of the upper flange and the upper end surface of the connecting plate.

7. The device for detecting the life of a solid self-lubricating bearing according to claim 5, characterized in that: The radial self-lubricating bearing and the axial self-lubricating bearing are both segmented disc structures, each composed of 12 circular arc bearing blocks; the radial self-lubricating bearing is fully installed in the device, and the axial self-lubricating bearing is installed in a quarter area of ​​the device.

8. The device for detecting the life of a solid self-lubricating bearing according to claim 7, characterized in that: The quarter area installation is to set three circumferentially dispersed arc bearing blocks and set the angle of 120 degrees between each two adjacent arc bearing blocks.

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