Sealing ring torsion test device

Abstract

The invention relates to a sealing ring torsion test device, and relates to the technical field of sealing ring tests, the sealing ring torsion test device comprises a first connecting piece and a second connecting piece, the first connecting piece is provided with a containing groove, the containing groove is used for containing a sealing ring, the second connecting piece is provided with a penetrating-out hole, the first connecting piece is further provided with a penetrating-out rod, the penetrating-out rod penetrates out of the penetrating-out hole, and the second connecting piece is provided with a sealing ring. The penetrating-out rod is provided with a first bearing and a second connecting piece, the penetrating-out rod is rotationally connected with the second connecting piece through the first bearing, a fixing piece and a second bearing are further arranged on the penetrating-out rod, the second bearing is arranged between the fixing piece and the first bearing, and a rotating face formed by the first bearing is perpendicular to a rotating face formed by the second bearing. The device has the advantage of being good in concentricity.

Description

Technical Field

[0001] The present application relates to the technical field of sealing ring testing, and in particular to a sealing ring torsion testing device. Background Art

[0002] The seal ring is the most critical sealing element for the bulldozer track link. The seal ring is not only expensive, but also has very strict requirements on the sealing part of the installation tooling. The failure of the seal ring will accelerate the wear of the crawler chain link and eventually lead to failure. When the crawler bulldozer is working, the seal ring is unevenly compressed, so the wear is also uneven. At the same time, when the main machine turns, the crawler is subjected to a certain lateral force, which will increase and decrease the compression of the left and right seal rings, resulting in uneven wear of the seal ring, which will greatly shorten the service life of the seal ring, causing it to quickly change from elastic deformation to permanent deformation, thereby generating a seal leakage point and continuous oil leakage. Therefore, the concentricity of the existing seal ring torsion test device is poor. Summary of the invention

[0003] In view of the shortcomings of the prior art, one of the purposes of the present application is to provide a sealing ring torsion test device, which has the advantage of better concentricity.

[0004] The above-mentioned purpose of the present application is achieved through the following technical solutions:

[0005] A sealing ring torsion test device comprises a connecting member 1 and a connecting member 2, wherein the connecting member 1 is provided with a receiving groove for receiving the sealing ring, the connecting member 2 is provided with a through hole, the connecting member 1 is also provided with a through rod, the through rod passes through the through hole and is rotatably connected to the connecting member 2 through a bearing 1, the through rod is also provided with a fixing member and a bearing 2, the bearing 2 is arranged between the fixing member and the bearing 1, and the rotating surface formed by the bearing 1 is perpendicular to the rotating surface formed by the bearing 2.

[0006] By adopting the above technical solution, during use, due to the arrangement of bearing one and bearing two, and the perpendicular rotating surfaces formed by bearing one and bearing two, a good positioning effect can be maintained in both radial and axial directions during the rotation process, thereby achieving better concentricity.

[0007] In a preferred example, the present application can be further configured as follows: a perfusion hole is also provided on the connecting member 1, and the perfusion hole is communicated with the receiving groove.

[0008] By adopting the above technical solution, the injection of lubricating oil can simulate the actual use situation to facilitate observation of whether there is leakage.

[0009] In a preferred example, the present application can be further configured as follows: the fixing part includes a fixing nut and a fixing cap, the fixing cap is sleeved on the penetration rod, one end of the fixing cap is against the second bearing, and the other end is against the fixing nut, and the fixing nut is threadedly connected to the penetration rod.

[0010] By adopting the above technical solution and arranging the fixing nut and the fixing cap, a good fixing effect can be achieved on the bearing 2.

[0011] In a preferred example, the present application can be further configured as follows: the connector two is detachably connected to the connector three, and the connector three is provided with a receiving cavity for receiving the fixing member.

[0012] By adopting the above technical solution, the existence of the accommodating cavity makes it possible to accommodate the fixing component, thereby reducing the probability of damage to the fixing component.

[0013] In a preferred example, the present application can be further configured as follows: a guide hole is also provided on the connecting member 1, one end of the guide hole is connected to the receiving groove and the other end is connected to the receiving cavity.

[0014] By adopting the above technical solution, the existence of the guide hole allows the lubricating oil to enter the accommodating cavity through the guide hole during use, lubricating bearing one and bearing two, thereby greatly extending the service life of bearing one and bearing two.

[0015] In a preferred example, the present application can be further configured as follows: the second connector and the third connector are sealed and connected.

[0016] By adopting the above technical solution, the second connector and the third connector are sealed so as to reduce the probability of lubricating oil leaking from the connection.

[0017] In a preferred example, the present application can be further configured as follows: a sealing member is further provided in the receiving groove, and the sealing member and the connecting member abut against each other to form a seal.

[0018] By adopting the above technical solution, the presence of the seal prevents lubricating oil from leaking from the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the cross-sectional structure of this application.

[0020] Figure numerals: 1, connecting piece 1; 11, accommodating groove; 12, penetration rod; 13, bearing 1; 14, bearing 2; 15, sealing piece; 2, connecting piece 2; 3, connecting piece 3; 31, accommodating cavity; 32, sealing groove; 4, fixing piece; 41, fixing nut; 42, fixing cap. DETAILED DESCRIPTION

[0021] The present application is further described in detail below in conjunction with the accompanying drawings.

[0022] Reference Figure 1 , is a sealing ring torsion test device disclosed in the present application, comprising a connecting piece 1, a connecting piece 2 and a connecting piece 3, the connecting piece 1 is provided with a receiving groove 11 and a penetration rod 12, the penetration rod 12 and the receiving groove 11 are concentrically arranged, and the receiving groove 11 is used to accommodate the sealing ring.

[0023] The connecting member 2 is provided with a hole for the passing rod 12 to pass through. The passing rod 12 is provided with two bearings 13. The passing rod 12 is rotatably connected to the connecting member 2 through the bearings 13. The bearings 13 are roller bearings. The passing rod 12 is also provided with a bearing 2 14 and a fixing member 4. The bearing 2 14 is a ball bearing. The fixing member 4 includes a fixing nut 41 and a fixing cap 42. The bearing 2 14 is sleeved on the passing rod 12 and is located between the fixing cap 42 and the bearing 1 13. The fixing nut 41 is threadedly connected to the passing rod 12 to fix the fixing cap 42. The rotating surface formed by the bearing 1 13 is perpendicular to the rotating surface formed by the bearing 2 14. The bearing 2 14 is in contact with the rotating pair of the bearing 1 13 located above.

[0024] The connector three 3 and the connector two 2 are detachably connected, and a receiving cavity 31 is provided on the connector three 3 for receiving the fixing member 4. A sealing groove 32 is also provided on the connector three 3, and an O-ring is provided in the sealing groove 32, so that the connector two 2 and the connector three 3 are sealed.

[0025] The connector 1 is provided with a perfusion hole and a guide hole, the perfusion hole is connected to the receiving groove 11, one end of the guide hole is connected to the receiving groove 11 (it can be directly connected or indirectly connected, and the indirect connection is connected to the perfusion hole), and the other end is connected to the receiving chamber 31. A sealing member 15 is also provided in the receiving groove 11, and the sealing member 15 and the connector 2 are against each other and form a seal. The sealing member 15 can be a mechanical seal or a sealing ring seal. In this embodiment, it is a mechanical seal. In this embodiment, the guide hole and the receiving groove 11 are directly connected and the connection point is higher than the chamber formed by the sealing ring to be tested and the receiving groove 11.

[0026] The implementation principle of this embodiment is as follows: when in use, the sealing ring to be tested is placed in the receiving groove 11, and then the bearing 13 and the bearing 2 14 are installed and fixed by the fixing member 4. In use, the filling hole is located at the bottom, and the lubricating oil is poured into the chamber formed by the sealing ring to be tested and the receiving groove 11 through the filling hole. Since the connection between the guide hole and the receiving groove 11 is higher than the chamber formed by the sealing ring to be tested and the receiving groove 11, the air in the chamber will be discharged along the guide hole during this process. When the chamber is filled with lubricating oil, the lubricating oil will rise along the guide hole to lubricate the bearing 13 and / or the bearing 2 14. In this process, due to the lubricating oil The rise of lubricating oil needs to overcome pressure, so the sealing effect is detected by observing whether the chamber is leaking. Subsequently, the connector three 3 and the connector two 2 are connected to form a seal, and a pressure sensor is set in the sealed chamber (such as the accommodating chamber 31) to detect the change in pressure, so that a better test detection effect of sealing leakage can be achieved. During the test, periodic pressurization is performed through the injection hole to measure the leakage, that is, lubricating oil is injected through the injection hole, and pressure detection is performed through the pressure sensor. If the pressure change meets the standard, the lubricating oil is extracted through the injection hole to restore the pressure to the pressure before the pressurization.

[0027] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A sealing ring torsion test device, characterized in that: The invention comprises a connecting member 1 (1) and a connecting member 2 (2), wherein the connecting member 1 (1) is provided with a receiving groove (11), wherein the receiving groove (11) is used to receive a sealing ring, and the connecting member 2 (2) is provided with a through hole, and the connecting member 1 (1) is also provided with a through rod (12), wherein the through rod (12) passes through the through hole and is rotatably connected to the connecting member 2 (2) via a bearing 1 (13), and the through rod (12) is also provided with a fixing member (4) and a bearing 2 (14), wherein the bearing 2 (14) is arranged between the fixing member (4) and the bearing 1 (13), and a rotating surface formed by the bearing 1 (13) is perpendicular to a rotating surface formed by the bearing 2 (14).

2. A sealing ring torsion test device according to claim 1, characterized in that: The connecting piece 1 (1) is also provided with a pouring hole, and the pouring hole is communicated with the containing groove (11).

3. A sealing ring torsion test device according to claim 2, characterized in that: The fixing member (4) comprises a fixing nut (41) and a fixing cap (42). The fixing cap (42) is sleeved on the penetration rod (12). One end of the fixing cap (42) abuts against the second bearing (14), and the other end abuts against the fixing nut (41). The fixing nut (41) and the penetration rod (12) are threadedly connected.

4. A sealing ring torsion test device according to claim 3, characterized in that: The second connecting piece (2) is also detachably connected to the third connecting piece (3), and the third connecting piece (3) is provided with a receiving cavity (31), and the receiving cavity (31) is used to receive the fixing piece (4).

5. A sealing ring torsion test device according to claim 4, characterized in that: The connecting piece 1 (1) is also provided with a flow guide hole, one end of which is connected to the receiving groove (11) and the other end of which is connected to the receiving chamber (31).

6. A sealing ring torsion test device according to claim 5, characterized in that: The second connecting member (2) and the third connecting member (3) are sealed and connected.

7. A sealing ring torsion test device according to claim 6, characterized in that: A sealing member (15) is also provided in the receiving groove (11), and the sealing member (15) and the second connecting member (2) abut against each other to form a seal.

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