Large-diameter sealing ring testing device

Abstract

The utility model relates to the technical field of bearing fitting test tools, in particular to a large-diameter sealing ring test device, which comprises a driving assembly, a main shaft, a rotating shaft and a shell, the driving assembly is connected with the main shaft and drives the main shaft to rotate, the main shaft is sleeved with a rotating shaft, the rotating shaft and the main shaft are fixedly connected and rotate synchronously, the rotating shaft is arranged in a fixed shell, a sealing middle check ring is assembled on the inner circumferential face of the shell, and test sealing rings are assembled on the two sides of the sealing middle check ring. And the two test sealing rings, the outer diameter surface of the rotating shaft and the inner diameter surface of the sealing middle check ring form a sealing cavity, the shell and the sealing middle check ring are correspondingly provided with through oil injection holes, and the oil injection holes are communicated to the sealing cavity. According to the device, the sealing cavity is formed between the rotating shaft and the sealing middle check ring through the test sealing ring, and the sealing performance of the sealing ring can be tested by injecting pressure lubricating oil into the sealing cavity. The structure is simple, operation is convenient, and a test result closer to an actual working state can be obtained.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing accessory test tooling, and particularly relates to a large-diameter sealing ring test device. Background Art

[0002] Sealing rings are widely used in the industrial field. Existing sealing test devices are all of small diameter and for testing under ideal conditions. In addition, existing sealing ring performance testing machines also have problems of complex structure and inconvenient operation. In order to simulate various situations in the actual use process, a large-diameter sealing ring test device is needed. Summary of the Invention

[0003] According to the defects existing in the above-mentioned prior art, the purpose of the utility model is to provide a large-diameter sealing ring test device with simple structure and convenient operation, which is used to test sealing rings with a diameter of less than 900 mm, so as to test the sealing performance of the sealing ring under different conditions.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is: a large-diameter sealing ring test device, including a driving component, a main shaft, a rotating shaft and a housing; the driving component is connected to the main shaft and drives the main shaft to rotate. The rotating shaft is sleeved outside the main shaft, and the rotating shaft is fixedly connected to the main shaft and rotates synchronously. The rotating shaft is arranged in a fixed housing. A sealing middle retaining ring is assembled on the inner peripheral surface of the housing. Test sealing rings are assembled on both sides of the sealing middle retaining ring. The two test sealing rings and the outer diameter surface of the rotating shaft and the inner diameter surface of the sealing middle retaining ring form a sealing cavity. Through holes are correspondingly arranged on the housing and the sealing middle retaining ring, and the through holes communicate with the sealing cavity.

[0005] Further, installation grooves are respectively arranged on both sides of the inner diameter surface of the sealing middle retaining ring, and the outer diameter surface of the test sealing ring is assembled in the installation groove, and the inner diameter surface of the test sealing ring cooperates with the outer diameter surface of the rotating shaft.

[0006] Further, the housing forms an annular assembly cavity for assembling the rotating shaft. End covers are arranged at both ends of the annular assembly cavity, and the end covers are fixedly connected to the housing through fastening bolts; a support frame is arranged below the housing, and the support frame is fixedly installed on the bottom mounting plate through bolts.

[0007] Further, side stops are arranged at both ends of the rotating shaft, sealing edge retaining rings are arranged on both sides of the sealing middle retaining ring, the inner edge of the sealing edge retaining ring is assembled between the outer edge of the side stop and the test sealing ring, and the outer edge of the sealing edge retaining ring is assembled between the end cover and the sealing middle retaining ring. The sealing edge retaining ring axially limits the test sealing ring and the sealing middle retaining ring.

[0008] Further, limit bolts are respectively connected to both end faces of the sealing middle retaining ring. The limit bolts pass through the sealing edge retaining ring and are connected to the sealing middle retaining ring. The end of the sealing edge retaining ring abuts against the inner surface of the end cover to axially limit the sealing middle retaining ring.

[0009] Further, the oil injection hole is arranged at the top of the housing and the sealing middle retaining ring. The oil injection hole is connected to the lubrication station through a pipeline, and pressure-controlled pressure lubricating oil is provided by the lubrication station.

[0010] Further, the driving assembly includes a driving motor, a driving pulley and a driven pulley. The output end of the driving motor is connected to the driving pulley and drives it to rotate. The driven pulley is fixed on the main shaft to drive the main shaft to rotate. The driving pulley and the driven pulley are connected by belt drive.

[0011] Further, the rotating shaft is connected to the end of the main shaft through a keyway. The end of the main shaft for connecting the rotating shaft is set as a conical structure. The rotating shaft is assembled on the main shaft through a conical sleeve with an inner diameter. The rotating shaft and the conical sleeve are an integral structure. A baffle is connected to the small end face of the main shaft through bolts. The diameter of the baffle is larger than the diameter of the small end face of the main shaft. The outer edge of the baffle forms axial limitation on the conical sleeve of the rotating shaft.

[0012] Further, the main shaft is supported by a support. The support is fixed to the mounting plate at the bottom through bolts. The support is provided with a horizontally arranged fine-tuning jackscrew. The fine-tuning jackscrew adjusts the radial position of the main shaft by adjusting the support, so as to adjust the eccentricity between the rotating shaft and the test sealing ring.

[0013] Further, the sealing middle retaining ring is in an interference fit with the inner surface of the housing.

[0014] The beneficial effects of the present utility model are as follows: The device constructs a sealing cavity between the rotating shaft and the sealing middle retaining ring through the test sealing ring. By injecting pressure lubricating oil into the sealing cavity, the test of the sealing performance of the sealing ring can be realized. The rotation speed of the rotating shaft is controlled by the driving mechanism, so as to test the sealing performance of the sealing ring at different rotation speeds. The structure is simple and the operation is convenient, and the test results closer to the actual working state can be obtained. Description of the Drawings

[0015] Figure 1 is a three-dimensional view of the sealing test device;

[0016] Figure 2 is a sectional view of the sealing test device;

[0017] Figure 3 is Figure 2 the enlarged view of the sealing structure in

[0018] Figure 4 is the front view of the sealing test device;

[0019] Figure 5 Top view of the sealing test device;

[0020] In the figure: 1 driving motor, 2 driven pulley, 3 main shaft, 4 rotating shaft, 4.1 conical sleeve, 5 sealing middle retaining ring, 6 housing, 7 test sealing ring, 8 support, 9 fine-tuning jackscrew, 10 driving pulley, 11 end cover, 12 oil injection hole, 13 support frame, 14 mounting plate, 15 limit bolt, 16 baffle, 17 side stop, 18 sealing edge retaining ring. Specific embodiments

[0021] To make the above objects, features and advantages of the present utility model more obvious and understandable, the following detailed description of the specific embodiments of the present utility model will be given with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0022] See the attached Figures 1-5 , a large-diameter sealing ring test device, comprising a driving assembly, a main shaft 3, a rotating shaft 4 and a housing 6; the driving assembly is connected to the main shaft 3 and drives the main shaft 3 to rotate, the outside of the main shaft 3 is sleeved with a rotating shaft 4, the rotating shaft 4 is fixedly connected to the main shaft 3 and rotates synchronously, the rotating shaft 4 is arranged in a fixed housing 6, a sealing middle retaining ring 5 is assembled on the inner peripheral surface of the housing 6, test sealing rings 7 are assembled on both sides of the sealing middle retaining ring 5, and the two test sealing rings 7 and the outer diameter surface of the rotating shaft 4 and the inner diameter surface of the sealing middle retaining ring 5 form a sealing cavity. The housing 6 and the sealing middle retaining ring 5 are correspondingly provided with a through oil injection hole 12, and the oil injection hole 12 communicates with the sealing cavity.

[0023] Further, the sealing middle retaining ring 5 is in an interference fit with the inner surface of the housing 6.

[0024] Further, the sealing middle retaining ring 5 is respectively provided with mounting grooves on both sides of the inner diameter surface, the outer diameter surface of the test sealing ring 7 is assembled in the mounting groove, and the inner diameter surface of the test sealing ring 7 is matched with the outer diameter surface of the rotating shaft 4.

[0025] Based on the above technical solution, the matching state between the inner diameter surface of the test sealing ring and the outer diameter surface of the rotating shaft depends on the matching state during the actual use of the sealing ring, and different test matches may be different. In this embodiment, the interference fit is adopted for the test.

[0026] Further, the housing 6 is formed with an annular assembly cavity for assembling the rotating shaft 4. End caps 11 are provided at both ends of the annular assembly cavity, and the end caps 11 are fixedly connected to the housing 6 by fastening bolts. A support frame 13 is provided below the housing 6, and the support frame 13 is fixed to the bottom mounting plate 14 by bolts.

[0027] Further, side blocks 17 are provided at both ends of the rotating shaft 4. Sealing edge retaining rings 18 are provided on both sides of the sealing middle retaining ring 5. The inner edge of the sealing edge retaining ring 18 is assembled between the outer edge of the side block 17 and the test sealing ring 7, and the outer edge of the sealing edge retaining ring 18 is assembled between the end cap 11 and the sealing middle retaining ring 5. The sealing edge retaining ring 18 axially positions the test sealing ring 7 and the sealing middle retaining ring 5.

[0028] Further, limit bolts 15 are respectively connected to the two end faces of the sealing middle retaining ring 5. The limit bolts 15 pass through the sealing edge retaining ring 18 and are connected to the sealing middle retaining ring 5. The end of the sealing edge retaining ring 18 abuts against the inner surface of the end cap 11 to axially position the sealing middle retaining ring 5. Ensure the installation positions of the two test sealing rings 7, and at the same time keep the oil injection holes of the housing 6 and the sealing middle retaining ring 5 always connected and corresponding.

[0029] Further, the oil injection holes 12 are provided at the tops of the housing 6 and the sealing middle retaining ring 5, facilitating the pressure lubricating oil to flow into the sealing cavity by its own weight. The oil injection holes 12 are connected to a lubrication station through pipelines, and the lubrication station provides pressure lubricating oil with controllable pressure.

[0030] Further, the drive assembly includes a drive motor 1, a driving pulley 10 and a driven pulley 2. The output end of the drive motor 1 is connected to the driving pulley 10 and drives it to rotate. The driven pulley 2 is fixed on the main shaft 3 and drives the main shaft 3 to rotate. The driving pulley 10 and the driven pulley 2 are connected by belt drive.

[0031] Further, the rotating shaft 4 is connected to the end of the main shaft 3 through a keyway. The end of the main shaft 3 for connecting the rotating shaft 4 is set as a conical structure. The rotating shaft 4 is assembled on the main shaft 3 through a conical sleeve 4.1 with an inner diameter. The rotating shaft 4 and the conical sleeve 4.1 are an integral structure. A baffle 16 is connected to the small end face of the main shaft 3 by bolts. The diameter of the baffle 16 is larger than the diameter of the small end face of the main shaft. The outer edge of the baffle 16 axially positions the conical sleeve 4.1 of the rotating shaft.

[0032] Further, the main shaft 3 is supported by a support 8. The support 8 is fixed to the bottom mounting plate 14 by bolts. A horizontally arranged fine-tuning jackscrew 9 is provided on the support 8. The fine-tuning jackscrew 9 adjusts the radial position of the main shaft 3 by adjusting the support 8, thereby adjusting the eccentricity between the rotating shaft 4 and the test sealing ring 7.

[0033] For the test installation, the test sealing ring 7 should be installed into the middle sealing retaining ring 5 first, then the middle sealing retaining ring 5 should be installed into the housing 6. The rotating shaft 4 should be installed on the main shaft 3 and fixed with bolts. Finally, the end covers 11 at both ends of the housing should be tightened. The installation is completed. Since there are two test sealing rings 7 on the left and right, a sealing cavity is formed between the outer diameter of the rotating shaft 4 and the inner diameter of the middle sealing retaining ring 5. The sealing performance of the sealing ring can be tested by injecting pressurized lubricating oil into the sealing cavity.

[0034] During the test, start the driving motor 1, drive it to the main shaft 3 through the pulley 2, so that relative movement occurs between the outer diameter of the rotating shaft 4 and the inner diameter of the sealing ring 7. At the same time, there is a fine-tuning jackscrew 9 at the horizontal position on the support 8. The rotating shaft 4 can move horizontally along with the main shaft 3 and the support 8. By adjusting the fine-tuning jackscrew 9, the eccentricity between the rotating shaft 4 and the sealing ring 7 can be adjusted, so as to simulate the working conditions of the sealing ring 7 under the extreme working state. There is an oil injection hole at the top of the housing 6, and a lubrication station provides pressurized lubricating oil (the pressure is adjustable), so as to test the sealing performance of the sealing ring under different rotational speeds, oil pressures and eccentricities.

[0035] It should be noted that the parts not described in detail in the present utility model are prior art.

[0036] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying 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 construed as a limitation to the present utility model.

[0037] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0038] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "linkage", "fixation" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral one; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the internal communication between two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0039] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0040] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it may be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation.

[0041] The above are only the best embodiments of the present utility model. Obviously, the present utility model is not limited to the above embodiments and there can be many variations. All variations that can be directly derived or associated by those of ordinary skill in the art from the disclosed content of the present utility model shall be considered as the protection scope of the present utility model.

Claims

1. A large-diameter sealing ring test device, characterized in that: It includes a drive assembly, a main shaft, a rotating shaft and a housing; the drive assembly is connected to the main shaft and drives the main shaft to rotate. The rotating shaft is sleeved outside the main shaft, and the rotating shaft is fixedly connected to the main shaft and rotates synchronously. The rotating shaft is arranged in a fixed housing. A sealing middle retaining ring is assembled on the inner peripheral surface of the housing. Test sealing rings are assembled on both sides of the sealing middle retaining ring. The two test sealing rings and the outer diameter surface of the rotating shaft and the inner diameter surface of the sealing middle retaining ring form a sealing cavity. Through holes for oil injection are correspondingly arranged on the housing and the sealing middle retaining ring, and the through holes for oil injection communicate with the sealing cavity.

2. The large-diameter sealing ring test device according to claim 1, wherein: The sealing middle retaining ring is respectively provided with mounting grooves on both sides of its inner diameter surface. The outer diameter surface of the test sealing ring is assembled in the mounting grooves, and the inner diameter surface of the test sealing ring cooperates with the outer diameter surface of the rotating shaft.

3. The large-diameter sealing ring test device according to claim 1, characterized in that: The housing forms an annular assembly cavity for assembling the rotating shaft. End covers are arranged at both ends of the annular assembly cavity. The end covers are fixedly connected to the housing through fastening bolts; a support frame is arranged below the housing, and the support frame is fixed on the bottom mounting plate through bolts.

4. The large-diameter seal ring test device according to claim 3, wherein: Side stops are arranged at both ends of the rotating shaft. Sealing edge retaining rings are arranged on both sides of the sealing middle retaining ring. The inner edge of the sealing edge retaining ring is assembled between the outer edge of the side stop and the test sealing ring, and the outer edge of the sealing edge retaining ring is assembled between the end cover and the sealing middle retaining ring. The sealing edge retaining ring axially limits the test sealing ring and the sealing middle retaining ring.

5. The large-diameter sealing ring test device according to claim 4, characterized in that: Limit bolts are respectively connected to the two end faces of the sealing middle retaining ring. The limit bolts pass through the sealing edge retaining ring and are connected to the sealing middle retaining ring. The end of the sealing edge retaining ring abuts against the inner surface of the end cover to axially limit the sealing middle retaining ring.

6. The large-diameter sealing ring test device according to claim 1, characterized in that: The through holes for oil injection are arranged at the top of the housing and the sealing middle retaining ring. The through holes for oil injection are connected to a lubrication station through pipelines, and pressure-controlled pressure lubricating oil is provided by the lubrication station.

7. The large-diameter sealing ring test device according to claim 1, wherein: The drive assembly includes a drive motor, a driving belt pulley and a driven belt pulley. The output end of the drive motor is connected to the driving belt pulley and drives it to rotate. The driven belt pulley is fixed on the main shaft and drives the main shaft to rotate. The driving belt pulley and the driven belt pulley are connected by belt drive.

8. The large-diameter sealing ring test device according to claim 1, wherein: The rotating shaft is connected to the end of the main shaft through a keyway. The end of the main shaft for connecting the rotating shaft is set as a conical structure. The rotating shaft is assembled on the main shaft through a conical sleeve with an inner diameter. The rotating shaft and the conical sleeve are an integral structure. A baffle is connected to the small end face of the main shaft through bolts. The diameter of the baffle is larger than the diameter of the small end face of the main shaft. The outer edge of the baffle axially limits the conical sleeve of the rotating shaft.

9. The large-diameter sealing ring test device according to claim 1, wherein: The main shaft is supported by a support. The support is fixed on the bottom mounting plate through bolts. A horizontally arranged fine-tuning jackscrew is provided on the support. The fine-tuning jackscrew adjusts the radial position of the main shaft by adjusting the support, so as to adjust the eccentricity between the rotating shaft and the test sealing ring.

10. The large-diameter sealing ring test device according to claim 1, wherein: The sealing middle retaining ring is in an interference fit with the inner surface of the housing.

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