Device for detecting sealing performance of oil seal of rotating shaft

Abstract

The utility model discloses a rotating shaft oil seal leakproofness detection device, which relates to the technical field of oil seal leakproofness detection and comprises a mounting shaft, a movable part is rotatably connected to the side wall of the mounting shaft, and a detection mechanism is arranged in the movable part. The detection mechanism comprises a sucking pump, a connecting rod, a fixing frame, a sealing piece and a fixing plate, the connecting rod is fixedly installed at the bottom of the sucking pump, and the fixing frame is fixedly installed at the bottom end of the connecting rod; according to the technical scheme provided by the utility model, the detection mechanism is adopted, the movable part is installed on the side wall of the rotating shaft by rotating the movable part during detection, the fixed frame covers the position, needing to be detected, of the oil seal, and air in the fixed frame is extracted through cooperation of the air extracting pump and the air extracting pipe; after a period of time, a sensor in the fixing plate is started to detect the air flow flowing through the interior of the through hole, if the air flow exceeds a certain numerical value, the position is marked through a marking piece, so that the whole device is convenient to install, the detection operation is simple, and the detection is more efficient.

Description

Technical Field

[0001] The utility model relates to the technical field of oil seal sealing performance detection, in particular to a rotating shaft oil seal sealing performance detection device. Background Art

[0002] A shaft is a cylindrical object that goes through the middle of a bearing, a wheel, or a gear. A shaft is a mechanical part that supports rotating parts and rotates with them to transmit motion, torque, or bending moment. It is usually a metal round rod, and each section can have different diameters. The parts that make rotating motion in the machine are installed on the shaft. Oil seal is the customary name for general seals, which simply means the seal of lubricating oil. It is a mechanical component used to seal grease. It isolates the parts that need to be lubricated in the transmission parts from the output parts to prevent the lubricating oil from leaking. The rotating shaft usually refers to the rotating shaft body.

[0003] Traditional oil seal sealing detection devices are usually large in size and usually need to be mounted on the oil seal for detection. When testing the installed oil seal, the rotating shaft is usually long, which makes the equipment installation inconvenient, resulting in cumbersome detection operations and troublesome detection. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art and provide a rotating shaft oil seal sealing detection device to solve the problem that the oil seal sealing detection device in the prior art is usually large in size and usually needs to be mounted on the oil seal for detection during detection. Since the rotating shaft is usually long, the equipment installation is not convenient, which leads to cumbersome detection operation and troublesome detection.

[0005] In view of this, the utility model provides a rotating shaft oil seal sealing detection device, comprising a mounting shaft, a movable part is rotatably connected to the side wall of the mounting shaft, and a detection mechanism is arranged inside the movable part;

[0006] The detection mechanism includes an air pump, a connecting rod, a fixing frame, a sealing member and a fixing plate. The connecting rod is fixedly installed at the bottom of the air pump, the fixing frame is fixedly installed at the bottom end of the connecting rod, the sealing member is fixedly installed at the bottom surface of the fixing frame, an air suction pipe is fixedly installed inside the connecting rod, one end of the air suction pipe is located inside the fixing frame, the fixing plate is fixedly installed on the inner wall of the fixing frame, a through hole is opened at one end of the fixing plate, a sensor is fixedly installed inside the through hole, and a marking member is arranged at the bottom of the fixing plate.

[0007] Optionally, an electric push rod is fixedly mounted on the bottom of the fixing plate, the electric push rod is located at one side of the through hole, and the marking member is fixedly mounted on an output end of the electric push rod.

[0008] Optionally, a movable groove is provided inside the movable member, a guide rail is fixedly installed inside the movable groove, and the connecting rod is slidably connected to the side wall of the guide rail.

[0009] Optionally, the vacuum pump is slidably connected to the top of the movable part through the connecting rod and the guide rail.

[0010] Optionally, the air extraction pipe is fixedly mounted on the air extraction pump connection end.

[0011] Optionally, the movable member and the marking member are both arc-shaped members.

[0012] Optionally, a mounting groove is provided on one side of the bottom of the sealing member, a fitting member is fixedly installed on the inner wall of the mounting groove, and a spring is fixedly installed between one side of the fitting member and the inner wall of the mounting groove.

[0013] It can be seen from the above technical solutions that the embodiments of the utility model have the following advantages:

[0014] 1. The utility model is a rotating shaft oil seal sealing detection device, which adopts a detection mechanism. During the detection, the movable part is installed on the side wall of the rotating shaft by rotating the movable part, and the fixed frame is covered at the oil seal where the detection is required. The air inside the fixed frame is extracted by the vacuum pump in cooperation with the vacuum pipe. After a period of time, the sensor inside the fixed plate starts to detect the air flow through the through hole. If it exceeds a certain value after a period of time, the place is marked by a marking part, so that the overall installation of the device is convenient, the detection operation is simple, and the detection is more efficient.

[0015] The utility model discloses a rotary shaft oil seal sealing detection device, which adopts the design of a fitting part. Such a design can make the sealing part fit the surface of the machine on one side of the oil seal and the rotary shaft more closely, so that the sealing effect inside the fixing frame is better, thereby making the detection more accurate.

[0016] These features and advantages of the present invention will be disclosed in detail in the following specific implementation manners and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings:

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 It is a partial cross-sectional structural schematic diagram of the utility model;

[0020] Figure 3 For this utility model Figure 2 The enlarged structural diagram at A in the middle;

[0021] Figure 4 For this utility model Figure 2 Enlarged structural diagram at B in the middle.

[0022] Explanation of the reference numerals in the accompanying drawings: 1. Mounting shaft; 2. Movable part; 3. Movable groove; 4. Guide rail; 5. Vacuum pump; 6. Connecting rod; 7. Fixed frame; 8. Sealing part; 9. Vacuum pipe; 10. Through hole; 11. Sensor; 12. Electric push rod; 13. Marking part; 14. Mounting groove; 15. Fitting part; 16. Spring; 17. Fixed plate. DETAILED DESCRIPTION

[0023] The following is an explanation and description of the technical scheme of the embodiment of the utility model in conjunction with the drawings of the embodiment of the utility model, but the following embodiment is only a preferred embodiment of the utility model, not all. Based on the embodiment in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the utility model.

[0024] A rotary shaft oil seal sealing detection device according to an embodiment of the utility model will be described in detail below with reference to the accompanying drawings.

[0025] Example 1

[0026] For easier understanding, see Figures 1 to 4 The utility model provides an embodiment of a rotating shaft oil seal sealing detection device, comprising a mounting shaft 1, a movable part 2 is rotatably connected to the side wall of the mounting shaft 1, and a detection mechanism is arranged inside the movable part 2;

[0027] The detection mechanism includes an air pump 5, a connecting rod 6, a fixing frame 7, a sealing member 8 and a fixing plate 17. The connecting rod 6 is fixedly installed at the bottom of the air pump 5, the fixing frame 7 is fixedly installed at the bottom of the connecting rod 6, the sealing member 8 is fixedly installed on the bottom surface of the fixing frame 7, an air extraction pipe 9 is fixedly installed inside the connecting rod 6, one end of the air extraction pipe 9 is located inside the fixing frame 7, the fixing plate 17 is fixedly installed on the inner wall of the fixing frame 7, a through hole 10 is opened at one end of the fixing plate 17 and penetrates the fixing plate 17, a sensor 11 is fixedly installed inside the through hole 10, and a marking member 13 is arranged at the bottom of the fixing plate 17.

[0028] It should be noted that, by providing the mounting shaft 1 and the movable part 2, the overall device volume is reduced; by allowing the movable part 2 to rotate on the side wall of the mounting shaft 1, the movable part 2 can be conveniently installed on the side wall of the rotating shaft; by providing the vacuum pump 5 in cooperation with the vacuum pipe 9, the air inside the fixed frame 7 can be extracted; by providing the sealing member 8, when extracting air, the sealing member 8 can fit with the surface of the rotating shaft and the machine on one side of the oil seal, so that a relatively sealed space is formed inside the fixed frame 7; by providing the through hole 10, the air extracted from the fixed frame 7 will flow through the through hole 10; the sensor 11 is an air flow sensor; by providing the sensor 11, the air flow inside the through hole 10 can be detected, thereby detecting the sealing effect of the oil seal at the cover of the fixed frame 7.

[0029] In some embodiments, Figure 3 As shown, an electric push rod 12 is fixedly mounted on the bottom of the fixing plate 17 , the electric push rod 12 is located at one side of the through hole 10 , and the marking member 13 is fixedly mounted on the output end of the electric push rod 12 .

[0030] It should be noted that, by providing the electric push rod 12 , the marking member 13 can be pushed to one side, so that the marking member 13 can contact with the surface of the oil seal to form a mark on the surface of the oil seal.

[0031] In some embodiments, Figure 2 As shown, a movable groove 3 is opened inside the movable part 2, a guide rail 4 is fixedly installed inside the movable groove 3, a connecting rod 6 is slidably connected to the side wall of the guide rail 4, an air pump 5 is slidably connected to the top of the movable part 2 through the connecting rod 6 and the guide rail 4, an air extraction pipe 9 is fixedly installed at the connecting end of the air extraction pump 5, and the movable part 2 and the marking part 13 are both arc-shaped parts.

[0032] It should be noted that by setting an arc-shaped movable part 2, the movable part 2 can be more conveniently sleeved on the side wall of the rotating shaft, by setting the marking part 13 in an arc shape, the marked position can be more conveniently observed, by setting an exhaust pipe 9 and cooperating with an exhaust pump 5, the air inside the fixed frame 7 can be extracted, and by setting a guide rail 4, the connecting rod 6 can be prevented from rotating during movement.

[0033] Example 2

[0034] In some embodiments, Figure 4 As shown, a mounting groove 14 is provided on one side of the bottom of the sealing member 8 , a fitting member 15 is fixedly installed on the inner wall of the mounting groove 14 , and a spring 16 is fixedly installed between one side of the fitting member 15 and the inner wall of the mounting groove 14 .

[0035] It should be noted that by setting the spring 16, the fitting 15 can be pushed to one side. When the fitting 15 is set to evacuate air during the detection process, the fitting 15 is deformed and contacts one side of the oil seal, so that the sealing member 8 can better fit the surface of the machine and the rotating shaft on one side of the oil seal, so that the internal sealing effect of the fixing frame 7 is better, thereby making the detection more accurate.

[0036] In the present invention, the air pump 5, the electric push rod 12 and the sensor 11 are well-known components and will not be described in detail herein.

[0037] Working principle: during detection, the movable part 2 is installed on the side wall of the rotating shaft by rotating it, and then the position of the fixed frame 7 is adjusted by turning the vacuum pump 5, and the fixed frame 7 is covered on the place where the oil seal needs to be detected. The air inside the fixed frame 7 is extracted by the vacuum pump 5 in cooperation with the vacuum pipe 9. When extracting air, the sealing member 8 can fit with the surface of the rotating shaft and the machine on one side of the oil seal to form a relatively sealed space inside the fixed frame 7. After a period of time, the sensor 11 inside the fixed plate 17 starts to detect the air flow passing through the through hole 10. If it exceeds a certain value after a period of time, the electric push rod 12 drives the marking member 13 to move to mark the place, and the detection is completed.

[0038] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A rotating shaft oil seal sealing detection device, characterized in that: It comprises a mounting shaft (1), a side wall of which is rotatably connected to a movable part (2), and a detection mechanism is arranged inside the movable part (2); The detection mechanism comprises an air pump (5), a connecting rod (6), a fixing frame (7), a sealing member (8) and a fixing plate (17); the connecting rod (6) is fixedly mounted on the bottom of the air pump (5); the fixing frame (7) is fixedly mounted on the bottom end of the connecting rod (6); the sealing member (8) is fixedly mounted on the bottom surface of the fixing frame (7); an air extraction pipe (9) is fixedly mounted inside the connecting rod (6); one end of the air extraction pipe (9) is located inside the fixing frame (7); the fixing plate (17) is fixedly mounted on the inner wall of the fixing frame (7); a through hole (10) penetrating the fixing plate (17) is formed at one end of the fixing plate (17); a sensor (11) is fixedly mounted inside the through hole (10); and a marking member (13) is arranged at the bottom of the fixing plate (17).

2. A rotary shaft oil seal sealing detection device according to claim 1, characterized in that: An electric push rod (12) is fixedly mounted on the bottom of the fixing plate (17), the electric push rod (12) is located on one side of the through hole (10), and the marking member (13) is fixedly mounted on the output end of the electric push rod (12).

3. The rotary shaft oil seal sealing detection device according to claim 1, characterized in that: A movable groove (3) is provided inside the movable member (2), a guide rail (4) is fixedly installed inside the movable groove (3), and the connecting rod (6) is slidably connected to the side wall of the guide rail (4).

4. A rotary shaft oil seal sealing detection device according to claim 3, characterized in that: The air extraction pump (5) is slidably connected to the top of the movable part (2) via the connecting rod (6) and the guide rail (4).

5. The rotary shaft oil seal sealing detection device according to claim 1, characterized in that: The air extraction pipe (9) is fixedly mounted on the connection end of the air extraction pump (5).

6. A rotary shaft oil seal sealing detection device according to claim 1, characterized in that: The movable part (2) and the marking part (13) are both arc-shaped parts.

7. A rotary shaft oil seal sealing detection device according to claim 1, characterized in that: A mounting groove (14) is provided on one side of the bottom of the sealing member (8), a fitting member (15) is fixedly mounted on the inner wall of the mounting groove (14), and a spring (16) is fixedly mounted between one side of the fitting member (15) and the inner wall of the mounting groove (14).

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