Creeping detection device for bearing sealing ring

Abstract

The utility model discloses a rolling bearing sealing ring creeping detection device, and relates to the technical field of rolling bearing sealing ring creeping detection. The device comprises a base, a bearing seat, a shaft sleeve, a limiting block, a transmission shaft and other main components. Wherein the bearing seat is used for fixing a to-be-tested bearing, the shaft sleeve is marked with a circumferential angle mark for determining the rotation angle of the transmission shaft, the limiting block is used for limiting the axial position of the transmission shaft, one end of the transmission shaft is connected with the sealing ring clamping assembly, and the other end is connected with the force application assembly. The sealing ring clamping assembly is composed of a sealing ring base and a sealing ring gland and used for fixing the sealing ring. The force application assembly is used for simulating the creeping process of the sealing ring. According to the technical scheme, the wriggling condition of the bearing sealing ring is accurately detected, so that the detection stability and accuracy are ensured, the performance of the bearing sealing ring can be evaluated, and the design of the bearing sealing ring can be optimized.

Description

Technical Field

[0001] This technical solution relates to the technical field of creep detection for seals used in rolling bearings, and mainly relates to a creep detection device for rolling bearing seals. Background Art

[0002] The usage state of the seal has a crucial impact on the service life of the rolling bearing. During the use of the bearing, the seal undertakes the important functions of keeping the internal lubricant of the bearing from leaking and preventing external impurities (such as dust, moisture, etc.) from entering the bearing interior. To achieve this purpose, a rubber lip seal is usually installed on the rolling bearing, and this seal will closely cooperate with the outer ring of the bearing. When the bearing rotates, the inner ring rotates together with the shaft, while the seal usually remains relatively stationary with respect to the outer ring of the bearing.

[0003] However, in the actual use process, there is a certain frictional force between the inner ring and the seal. This frictional force will cause the seal to produce a small displacement along the rotation direction of the inner ring, that is, the so-called "creep" phenomenon. If the creep speed of the seal is too fast, it may lead to the leakage of the lubricant or the easier entry of external impurities into the bearing interior, thereby accelerating the wear of the bearing and shortening the service life of the bearing.

[0004] Therefore, a device capable of detecting the creep of the rolling bearing seal is needed to prevent the seal from creeping too fast, resulting in the leakage of the lubricant or the entry of impurities into the bearing, affecting the operating state and service life of the bearing. Summary of the Invention

[0005] To solve the above technical problems, this technical solution proposes a creep detection device for rolling bearing seals.

[0006] The technical solution adopted by the present utility model is: a creep detection device for rolling bearing seals, including a base, on which a bearing seat, a shaft sleeve, and a limit block for fixing the bearing to be tested are sequentially arranged. Inside the bearing seat, there is a seal clamping assembly for clamping and fixing the seal of the bearing to be tested. One end of a transmission shaft passes through the through hole of the shaft sleeve and is fixedly connected to the seal clamping assembly, and the other end is connected to a force application assembly. The limit block is arranged between the shaft sleeve and the force application assembly, its lower end is installed on the base, and its upper end is provided with a limit structure that cooperates with the limit groove of the transmission shaft to axially position the transmission shaft.

[0007] As a preferred solution, the seal clamping assembly includes a seal seat and a seal gland. Screws fix one end of the seal seat to the transmission shaft through a number of through holes arranged around the center in a ring shape. Through holes are provided at the center positions of the seal gland and the seal seat, and the screws pass through the through holes to connect the seal gland and the seal seat.

[0008] As a preferred solution, the other end of the sealing ring seat is provided with a protruding first annular step, and the outer surface of the sealing ring gland relative to the sealing ring seat is provided with a second annular step corresponding to the first annular step. The first annular step and the second annular step cooperate to clamp the sealing ring.

[0009] As a preferred solution, the force application assembly includes a thin string and a weight. One end of the thin string is wound and tied to the end of the transmission shaft, and the other end is connected to the weight.

[0010] As a preferred solution, the bearing seat is a ring-shaped inner step through-hole structure for positioning the outer ring of the bearing, and mounting holes for fixing are provided on both sides of the bottom of the bearing seat.

[0011] As a preferred solution, a plurality of threaded holes are provided on the outer end face of the bearing seat, and the bearing seat gland is fixed to the outer end face of the bearing seat by screws to fix the bearing to be tested.

[0012] As a preferred solution, a circumferential angle identifier for cooperating with a line segment on the cylindrical surface of the transmission shaft to determine the rotation angle of the transmission shaft is marked on the outer side of the through-hole of the shaft sleeve.

[0013] As a preferred solution, the base is provided with a T-shaped groove. The limiting block is of an L-shaped structure. The hemispherical structure at the upper end cooperates with the limiting groove of the transmission shaft for positioning, and the lower end is provided with a T-shaped step for cooperating with the T-shaped groove. A threaded through-hole for fixing the limiting block is provided on the exposed surface of the T-shaped step.

[0014] As a preferred solution, a linear scale for determining the position of the limiting block is provided outside the T-shaped groove.

[0015] The beneficial effects of this technical solution are:

[0016] Based on the defects existing in the prior art, the present application provides a rolling bearing sealing ring creep detection device. Through optimizing the structural design, this solution has the following technical effects:

[0017] First, through the mutual cooperation of the base, the bearing seat, the shaft sleeve, the limiting block and the transmission shaft, this technical solution realizes the precise detection of the creep situation of the rolling bearing sealing ring, ensures the stability and accuracy during the detection process. Through the mutual cooperation of the structure of the limiting block and the transmission shaft, the precise limitation of the axial position of the transmission shaft is realized. At the same time, through the cooperation of the circumferential angle identifier on the shaft sleeve and the line segment on the transmission shaft, the precise reading of the rotation angle of the transmission shaft is realized, ensuring the accuracy and efficiency of the detection result.

[0018] Second, the technical solution realizes the stable drive and control of the peristalsis of the sealing ring by the structural cooperation between the force application component composed of a thin string and a weight and the transmission shaft, converts the gravity of the weight into the rotational force of the sealing ring, and realizes the detection of the peristaltic angular velocity of the bearing sealing ring by observing the peristaltic angle of the sealing ring within a unit time. In addition, by detecting multiple times at equal intervals, the change trend of the peristaltic angular velocity of the sealing ring can be obtained, which helps to optimize the structure of the outer ring sealing groove and the sealing ring of the bearing.

[0019] Third, the structures of the sealing ring seat and the sealing ring gland cooperate with each other to effectively clamp the sealing ring and make it evenly stressed, ensuring the stability of the position of the sealing ring during the detection process and avoiding measurement errors caused by changes in the position of the sealing ring.

[0020] Fourth, the bearing seat and the bearing seat gland cooperate with each other to accurately position and effectively fix the outer ring of the bearing, ensuring the stability of the position of the bearing during the detection process and avoiding measurement errors caused by changes in the position of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the technical solution or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the technical solutions. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0022] Figure 1 FIG. is a schematic structural diagram of a bearing sealing ring peristalsis detection device;

[0023] Figure 2 FIG. is a sectional view of a bearing sealing ring peristalsis detection device;

[0024] In the figure: 1, base; 2, bearing seat; 3, bearing seat gland; 4, sealing ring seat; 5, sealing ring gland; 6, bushing; 7, transmission shaft; 8, limit block; 9, thin string; 10, weight; 11, outer ring of bearing; 12, sealing ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] Hereinafter, the technical solution will be specifically described by way of exemplary embodiments. However, it should be understood that without further elaboration, the elements, structures, and features in one embodiment can also be beneficially combined with those in other embodiments.

[0026] It should be noted that: Unless otherwise defined, the technical terms or scientific terms used in this text shall have the ordinary meanings understood by those with ordinary skills in the field to which this technical solution belongs. The words such as "a", "an", or "the" used in the specification and claims of this utility model patent application do not express a quantity limitation, but mean that there is at least one; words such as "comprising" or "including" indicate that the elements or objects appearing before "comprising" or "including" cover the elements or objects listed after "comprising" or "including" and their equivalents, but do not exclude other elements or objects with the same functions.

[0027] Embodiment 1

[0028] To more clearly describe the specific structural composition of this rolling bearing seal ring creep detection device, in combination with the attached Figure 1 and the attached Figure 2 describe this embodiment:

[0029] As shown in the figure, a rolling bearing seal ring creep detection device, its structure includes a base 1, on which a bearing seat 2, a bushing 6 and a limit block 8 for fixing the bearing to be tested are successively installed. Inside the bearing seat, there is a seal ring clamping assembly for clamping and fixing the seal ring of the bearing to be tested. One end of a transmission shaft 7 passes through the through hole of the bushing 6 and is fixedly connected to the seal ring clamping assembly, and the other end is connected to a force application assembly. The limit block 8 is arranged between the bushing 6 and the force application assembly, its bottom is installed on the base 1, and the top of the limit block 8 has a specially designed limit structure, which can cooperate with the limit groove on the transmission shaft 7 to ensure the stability of the transmission shaft 7 in the axial position;

[0030] In this embodiment, a sunken T-shaped groove is provided on the base 1. The limit block 8 adopts an L-shaped structure, and there is a hemispherical structure at its upper end, which matches the limit groove on the transmission shaft 7 to achieve positioning. A T-shaped step that matches the T-shaped groove on the base 1 is provided at the lower end of the limit block 8. A threaded through hole is also provided on the exposed surface of the T-shaped step for fixing the limit block 8.

[0031] For further optimization, a linear scale is provided outside the T-shaped groove for determining the specific position of the limit block 8.

[0032] In this embodiment, the seal ring clamping assembly is composed of a seal ring seat 4 and a seal ring gland 5. The seal ring seat 4 is fixed to the transmission shaft 7 by screws, and these screws pass through a plurality of through holes distributed around the center on the seal ring seat 4. Through holes are provided at the centers of both the seal ring gland 5 and the seal ring seat 4, and the screws pass through the through holes of these two components to fasten them together.

[0033] For further optimization, one end of the seal ring seat 4 is provided with a first annular step protruding outward, and on the outer side of the seal ring gland 5 facing the seal ring seat 4, there is a second annular step matching the first annular step. These two annular steps cooperate with each other to effectively clamp the seal ring 12.

[0034] In this embodiment, the bearing seat 2 has a through-hole structure with an annular inner step for positioning the outer ring of the bearing. In addition, mounting holes are provided on both sides of the bottom of the bearing seat 2 for fixing it.

[0035] In this embodiment, the sleeve 6 is marked with circumferential angle markings on the outer side of its through-hole, and these markings are used in cooperation with the line segments on the cylindrical surface of the transmission shaft 7 to determine the rotation angle of the transmission shaft 7.

[0036] In this embodiment, the force application assembly consists of a thin string 9 and a weight 10. One end of the thin string 9 is wound and fixed to the end of the transmission shaft 7, and the other end is connected to the weight 10.

[0037] The detection process using the above device is as follows:

[0038] Step 1: Install the outer ring 11 of the bearing with the seal ring 12 into the bearing seat 2, and fix the bearing using the bearing seat gland 3;

[0039] Step 2: Move the transmission shaft 7 with the seal ring seat 4 to near the seal ring 12, make the seal ring seat 4 contact the right end face of the seal ring 12, and fix the limit block 8;

[0040] Step 3: Install the seal ring gland 5 to tightly clamp the bearing seal ring 12 by the seal ring gland 5 and the seal ring seat 4;

[0041] Step 4: Install the thin string 9 at the right end of the transmission shaft 7 and wind it around several times;

[0042] Step 5: Install the weight 10 at the free end of the other end of the thin string 9 and gently place the weight 10;

[0043] Step 6: Record the current angle α at which the line segment is located on the transmission shaft 7, and after a certain time t, record the angle β at which it is located;

[0044] Step 7: Calculate the creep angular velocity of the bearing seal ring 12 within the time t .

[0045] The parts not described in detail in this embodiment are prior art.

[0046] Embodiment 2:

[0047] A creep detection device for a rolling bearing seal ring, which is composed of a base 1, a bearing seat 2, a bearing seat end cover 3, a seal ring seat 4, a seal ring gland 5, a bushing 6, a transmission shaft 7, a limit block 8, and a force application assembly.

[0048] In this embodiment, the base 1 is a rectangular parallelepiped platform, with threaded holes for installing the bearing seat 2 on the left side, threaded holes for installing the bushing 6 in the middle, and a T-shaped groove for guiding the limit block 8 is opened in the middle of the right side. A linear scale is arranged outside the T-shaped groove for determining the position of the limit block 8.

[0049] In this embodiment, the main feature of the bearing seat 2 is that it has an annular inner step through-hole structure. The annular inner step is used for mating and positioning the outer ring 11 of the bearing. Installation holes are provided on both sides of the bottom of the bearing seat 2, and it can be installed on the left middle part of the base 1 through bolts. Threaded holes are evenly distributed on the right end face of the bearing seat 2. In cooperation with the bearing seat gland 3, screws are used to fix the outer ring 11 of the bearing.

[0050] In this embodiment, the bearing seat gland 3 is a circular ring step structure, with through holes evenly distributed on the outer end face. Screws can be used to make the inner step contact with the right end face of the bearing, realizing the fixation of the outer diameter of the bearing;

[0051] In this embodiment, a through hole is provided in the upper part of the bushing 6 for guiding the transmission shaft 7, so that the transmission shaft 7 can move back and forth along the axis of the through hole of the bushing 6. Angle marks are drawn on the outside of the through hole of the bushing 6 in a circle, and in cooperation with the line segment on the cylindrical surface of the transmission shaft 7, it is used to determine the rotation angle of the transmission shaft 7.

[0052] In this embodiment, an arc-shaped through groove is provided on the right end cylindrical surface of the transmission shaft 7. The transmission shaft 7 can be axially positioned by the limit block 8, and at the same time, the transmission shaft 7 can only rotate in the circumferential direction. A threaded hole for installing the seal ring seat 4 is provided on the left end face of the transmission shaft 7. A line segment is drawn on the cylindrical surface of the transmission shaft 7, and in cooperation with the angle marks outside the through hole of the bushing 6, it is used to determine the rotation angle of the transmission shaft 7.

[0053] In this embodiment, the seal ring seat 4 is a disc structure, with a protruding annular step on the left side for cooperating with the annular step of the seal ring gland 5 to clamp and fix the seal ring 12; a threaded hole is provided at the center position of the seal ring seat 4 for clamping the seal ring gland 5; through holes for installation are provided around the center of the seal ring seat 4, and the seal ring seat 4 can be installed on the left end face of the transmission shaft 7 through screws.

[0054] In this embodiment, the seal ring gland 5 is a disc structure, with a protruding annular step on the right end face for cooperating with the seal ring seat 4 to clamp and fix the seal ring 12. A through hole is provided at the center position of the seal ring gland 5, and the seal ring gland 5 can be connected to the seal ring seat 4 through screws, realizing the clamping of the bearing seal ring 12.

[0055] In this embodiment, the limiting block 8 is integrally of an L-shaped structure, with a hemispherical structure provided at the upper end, which is engaged with the annular groove on the right side of the transmission shaft 7. The lower end of the limiting block 8 is provided with a T-shaped step for engaging with the T-shaped groove in the base 1. A threaded through hole is provided at the center of the upper end face of the step, and the limiting block 8 can be fixed by screwing in a screw.

[0056] In this embodiment, the force application assembly is a motor that can provide a fixed torque.

[0057] The detection process using the above device is as follows:

[0058] Step 1: Install the outer ring 11 of the bearing with the seal ring 12 into the bearing housing 2, and fix the bearing using the bearing housing gland 3.

[0059] Step 2: Move the transmission shaft 7 with the seal ring seat 4 to near the seal ring 12, make the seal ring seat 4 contact the right end face of the seal ring 12, and fix the limiting block 8.

[0060] Step 3: Install the seal ring gland 5 to tightly clamp the bearing seal ring 12 between the seal ring gland 5 and the seal ring seat 4.

[0061] Step 4: Install the motor at the right end of the transmission shaft 7.

[0062] Step 5: Start the motor.

[0063] Step 6: Record the angle α at which the line segment on the current transmission shaft 7 is located, and after a certain time t, record the angle β at which it is located.

[0064] Step 7: Calculate the creep angular velocity of the bearing seal ring 12 within the time t .

[0065] The parts not detailed in this embodiment are prior art.

[0066] It should be noted that although the technical solution has been described through the above embodiments, the technical solution can also have many other embodiments. Without departing from the spirit and scope of the technical solution, those skilled in the art can obviously make various corresponding changes and deformations to the technical solution, but these changes and deformations should all fall within the scope protected by the appended claims of the technical solution and their equivalents.

Claims

1. A rolling bearing seal ring creep detection device, comprising a base (1), characterized in that: A bearing seat (2), a shaft sleeve (6) and a stop block (8) for fixing the bearing to be tested are sequentially arranged on the base (1); a sealing ring clamping assembly for clamping and fixing the sealing ring of the bearing to be tested is arranged in the bearing seat (2); one end of the transmission shaft (7) passes through the through hole of the shaft sleeve (6) and is fixedly connected to the sealing ring clamping assembly, and the other end is connected to the force-applying assembly; the stop block (8) is arranged between the shaft sleeve (6) and the force-applying assembly, the lower end of which is mounted on the base (1), and the upper end of which is provided with a stop structure that matches the stop groove of the transmission shaft (7) to axially position the transmission shaft (7).

2. The rolling bearing seal ring creep detection device according to claim 1, characterized in that: The sealing ring clamping assembly comprises a sealing ring seat (4) and a sealing ring gland (5), wherein screws pass through a plurality of through holes arranged in a central ring around the sealing ring seat (4) to fix one end of the sealing ring seat to the transmission shaft (7), and through holes are arranged at the center of the sealing ring gland (5) and the sealing ring seat (4), and screws pass through the through holes to connect the sealing ring gland (5) to the sealing ring seat (4).

3. The rolling bearing seal ring creep detection device according to claim 2, characterized in that: The other end of the sealing ring seat (4) is provided with a protruding first annular step, and the outer surface of the sealing ring gland (5) relative to the sealing ring seat (4) is provided with a second annular step corresponding to the first annular step, and the first annular step cooperates with the second annular step to clamp the sealing ring (12).

4. The rolling bearing seal ring creep detection device according to claim 1, characterized in that: The force-applying component comprises a thin rope (9) and a weight (10); one end of the thin rope (9) is wound around the end of the transmission shaft (7), and the other end is connected to the weight (10).

5. The rolling bearing seal ring creep detection device according to claim 1, characterized in that: The bearing seat (2) is an annular inner step through-hole structure for positioning the outer ring of the bearing to be tested, and mounting holes for fixing are provided on both sides of the bottom of the bearing seat (2).

6. The rolling bearing seal ring creep detection device according to claim 5, characterized in that: The outer end surface of the bearing seat (2) is provided with a plurality of threaded holes, and the bearing seat cover (3) is fixed to the outer end surface of the bearing seat (2) by screws to fix the outer ring (11) of the bearing to be tested.

7. The rolling bearing seal ring creep detection device according to claim 1, characterized in that: The outer side of the through hole of the shaft sleeve (6) is marked with a circumferential angle mark for cooperating with a line segment on the cylindrical surface of the transmission shaft (7) to determine the rotation angle of the transmission shaft (7).

8. The rolling bearing seal ring creep detection device according to claim 1, characterized in that: The base (1) is provided with a T-shaped groove, the limit block (8) is an L-shaped structure, the hemispherical structure at the upper end cooperates with the limit groove of the transmission shaft (7) for positioning, and the lower end is provided with a T-shaped step that cooperates with the T-shaped groove, and the exposed surface of the T-shaped step is provided with a threaded through hole for fixing the limit block (8).

9. The rolling bearing seal ring creep detection device according to claim 8, characterized in that: A linear ruler for determining the position of the limit block (8) is provided on the outside of the T-slot.

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