Blocking mechanism for bushing in volute weld leakage test
By designing the sealing mechanism at the vortex weld leakage test bushing, and using seal strips and seals to seal the gaps between the vortex and bushing, the problem of gas leakage during detection is solved, and more accurate detection results and a wider scope of application are achieved.
Patent Information
- Application Number
- CN202421332255.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-12
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2034-06-12
AI Technical Summary
When detecting the turbocharger, due to a gap between the bushing and the shaft, gas may leak out from the gap when applying a large pressure, which affects whether the rocker arm and valve cover shaft are leaking.
A sealing mechanism at the vortex weld leakage test bushing is designed, including a bracket, a fixed clamping table, a moving clamping table, a sealing part and a sealing strip. The sealing strip is tightened through the clamping table locking assembly to seal the gaps at the vortex and bushing to prevent gas leakage.
It effectively avoids the problem of gas leaking from the gap when a large pressure is applied, and facilitates detection and judgment of whether the rocker arm and valve cover shaft leak, which is easy to operate and has a wide range of applications.
Smart Images
Figure CN222544929U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of automotive turbines, and particularly relates to a plugging mechanism at the bushing for testing the leakage of the scroll housing weld seam. Background Technique
[0002] The centrifugal compressor and the turbine are combined into an integral unit, called a turbocharger. The turbocharger increases the intake pressure of the engine. When the exhaust pressure of the engine is greater than the turbocharging set value, an exhaust bypass valve needs to be used for exhaust control. After the turbine scroll housing is manufactured, its airtightness needs to be detected.
[0003] There is occasionally a problem of weld seam leakage after the rocker arm is welded to the valve cover rotating shaft. During detection, because there is a gap between the bushing and the rotating shaft, when a large pressure is applied, gas may leak out from the above-mentioned gap, which will affect the judgment of whether the rocker arm and the valve cover rotating shaft are airtight. For this reason, we propose a plugging mechanism for the gap between the bushing and the rotating shaft. Content of the Utility Model
[0004] The technical problem to be solved by the utility model is that during detection, because there is a gap between the bushing and the rotating shaft, when a large pressure is applied, gas may leak out from the gap. In view of the deficiencies of the prior art, a plugging mechanism at the bushing for testing the leakage of the scroll housing weld seam is provided.
[0005] To solve the above technical problem, the technical solution adopted by the utility model is:
[0006] It includes a bracket, the bottom of the bracket is connected with a fixed clamping table, the bottom of the fixed clamping table is provided with a first sealing member, one side of the bracket is slidably connected with a movable clamping table, the bottom of the movable clamping table is provided with a second sealing member, sealing strips are arranged on the opposite sides of the first sealing member and the second sealing member, and a clamping table locking assembly is arranged on the top of the bracket.
[0007] Further, the sealing strip is composed of two layers of arc-shaped elastic materials with different ring diameters, and the two groups of sealing strips are used for clamping the bushing and the scroll housing.
[0008] Further, a T-shaped groove is arranged on one side of the bracket, an I-shaped part is arranged on the top of the movable clamping table, a sliding groove is formed in the depression of the I-shaped part and is slidably connected with the inside of the T-shaped groove, and the movable clamping table is slidably connected with the bracket through the I-shaped part and the T-shaped groove.
[0009] Further, the clamping table locking assembly includes a handle holder installed on the top of the bracket, a handle is rotatably arranged on one side of the handle holder, a rotating shaft is arranged on the handle, a C-shaped frame is installed at the end of the rotating shaft, a pulling and fixing frame is installed on the top of the movable clamping table, and one side of the pulling and fixing frame is fixedly installed with the C-shaped frame.
[0010] Furthermore, an anti - detachment limit block is installed on the top of the movable clamping table. A receiving groove is provided on one side of the anti - detachment limit block and the pulling and fixing frame. The middle part of the U - shaped frame is rotatably arranged inside the receiving groove, and a cushion sleeve is sleeved on the middle part of the U - shaped frame.
[0011] Furthermore, threads are provided at both ends of the U - shaped frame, and a nut is threadedly connected to the surface of the U - shaped frame close to the rotating shaft.
[0012] Furthermore, a让位切口 (let - through notch) is provided on one side of the handle frame. The handle is used to rotate the rotating shaft to pull the U - shaped frame, and the let - through notch is used to allow the rotating shaft to enter the let - through notch to make the U - shaped frame tilt.
[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0014] 1. Before conducting a weld leakage test on the rocker arm and the valve cover rotating shaft, move the fixed clamping table and pull the movable clamping table so that the movable clamping table and the fixed clamping table are sleeved outside the volute and the bushing, making the sealing strip on the second seal contact the volute and the bushing. Then, make the clamping table locking assembly tighten the fixed clamping table and the movable clamping table to clamp the two sealing strips to complete the sealing at the volute and the bushing, avoiding the problem of gas leakage from the gap when applying a large pressure, and facilitating the detection and judgment of whether the rocker arm and the valve cover rotating shaft are air - leaking;
[0015] 2. When it is necessary for the clamping table locking assembly to lock the fixed clamping table and the movable clamping table, rotate the handle rotating shaft to move and pull the U - shaped frame, and then pull the pulling and fixing frame to lock the movable clamping table and the fixed clamping table. Operating the handle is simple and convenient, and the clamping can be quickly carried out during the test, making it more convenient to use;
[0016] 3. Rotate the nut to adjust the position where the U - shaped frame is fixed to the rotating shaft, and then adjust the distance that the U - shaped frame pulls the pulling and fixing frame to move, and further adjust the pressure exerted by the seal on the sealing strip, facilitating the sealing strip to maintain sealing at an appropriate pressure;
[0017] 4. At the same time, the adjustable U - shaped frame can cooperate with the replacement of the first seal and the second seal of different sizes, enabling the sealing mechanism to adapt to volute bushings of different sizes and improving the applicable range of the mechanism. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The following further elaborates on the present utility model in conjunction with the drawings.
[0019] Figure 1 : Schematic diagram of the three - dimensional structure of the present utility model and its connection with the volute bushing;
[0020] Figure 2 : Schematic diagram of the three - dimensional structure of the present utility model;
[0021] Figure 3 : Exploded schematic diagram of the present utility model; It should be noted that "让位切口" is a literal translation, and it might be better to use a more descriptive and accurate term like "let - through notch" or other appropriate expressions depending on the context. Also, for the 7 - digit tags like , they are kept as they are according to the requirements.
[0022] Figure 4 : The structural schematic diagram of the cross-section in the utility model.
[0023] Among them, A, volute; B, bushing; C, rocker arm; D, valve cover shaft; 10, bracket; 11, fixed clamping platform; 12, first seal; 13, dynamic clamping platform; 14, second seal; 15, sealing strip; 16, T-slot; 17, I-shaped part; 20, locking assembly; 21, handle frame; 211, clearance cut; 22, handle; 23, shaft; 24, T-shaped frame; 25, pulling frame; 26, anti-drop limit block; 27, receiving groove; 28, gasket; 29, nut. DETAILED DESCRIPTION
[0024] In order to better understand the present invention, the content of the present invention is further clearly described below in conjunction with the embodiments, but the protection content of the present invention is not limited to the following embodiments. In the following description, a large number of specific details are given in order to provide a more thorough understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without one or more of these details.
[0025] Example 1: See Figure 1-4 The present embodiment is a plugging mechanism for testing the volute weld leakage at the bushing, which includes a bracket 10, a fixed clamping platform 11 is connected to the bottom of the bracket 10, and a first sealing member 12 is installed at the bottom of the fixed clamping platform 11. Before performing a weld leakage test on the rocker arm C and the valve cover rotating shaft D, the fixed clamping platform 11 is moved to make the first sealing member 12 stuck on the outside of the volute A and the bushing B. A movable clamping platform 13 is slidably connected to one side of the bracket 10, and the movable clamping platform 13 is pulled to slide on the bracket 10. A second sealing member 12 is installed at the bottom of the movable clamping platform 13. The seal 14, the first seal 12 and the second seal 14 are both provided with sealing strips 15 on opposite sides, and the sealing strip 15 on the first seal 12 contacts the volute A and the bushing B, and the sealing strip 15 on the second seal 14 contacts the volute A and the bushing B, and a clamp locking assembly 20 is provided on the top of the bracket 10, and then the clamp locking assembly 20 tightens the fixed clamp 11 and the movable clamp 13, so that the first seal 12 and the second seal 14 clamp the two sealing strips 15 to complete the sealing at the volute A and the bushing B.
[0026] See also Figure 2-4 The sealing strip 15 is composed of two layers of arc-shaped elastic materials with different ring diameters. The two sets of sealing strips 15 are used to clamp the bushing A and the volute B. In this embodiment, the sealing strip 15 is made of rubber.
[0027] See also Figure 3-4, a T-shaped groove 16 is provided on one side of the bracket 10, and an I-shaped portion 17 is provided on the top of the movable clamping table 13. A sliding groove is formed in the recess of the I-shaped portion 17 and is slidably connected to the inside of the T-shaped groove 16. The movable clamping table 13 is slidably connected to the bracket 10 through the I-shaped portion 17 and the T-shaped groove 16. When the movable clamping table 13 is slid, the movable clamping table 13 slides in the T-shaped groove 16 through the I-shaped portion 17 to limit the movement track and prevent the movable clamping table 13 from detaching from the bracket 10 at the same time.
[0028] Refer to Figure 3-4 , the clamping table locking assembly 20 includes a handle holder 21 installed on the top of the bracket 10. A handle 22 is rotatably provided on one side of the handle holder 21. When it is necessary for the clamping table locking assembly 20 to lock the fixed clamping table 11 and the movable clamping table 13, the handle 22 is rotated. The part of the handle 22 close to the end is rotatably connected to the handle holder 21 through a rotating shaft. A rotating shaft 23 is provided on the handle 22. When the handle 22 rotates, it drives the rotating shaft 23 to move. A U-shaped frame 24 is installed at the end of the rotating shaft 23. The movement of the rotating shaft 23 pulls the U-shaped frame 24. A pulling and fixing frame 25 is installed on the top of the movable clamping table 13. One side of the pulling and fixing frame 25 is fixedly connected to the U-shaped frame 24. The movement of the U-shaped frame 24 pulls the pulling and fixing frame 25 to move, thereby moving the movable clamping table 13 and locking the movable clamping table 13 and the fixed clamping table 11.
[0029] Refer to Figure 1-3 , a anti-detachment limit block 26 is installed on the top of the movable clamping table 13. A receiving groove 27 is provided on one side of the anti-detachment limit block 26 and the pulling and fixing frame 25. The middle part of the U-shaped frame 24 is rotatably arranged inside the receiving groove 27. The anti-detachment limit block 26 prevents the U-shaped frame 24 from separating from the receiving groove 27, so that the movable clamping table 13 will not detach from the side of the bracket 10 after the sealing is released. A cushion sleeve 28 is sleeved on the middle part of the U-shaped frame 24. The cushion sleeve 28 can reduce the problem of excessive local wear between the U-shaped frame 24 and the receiving groove 27 and extend the service life.
[0030] Refer to Figure 3-4 , a让位切口211 is provided on one side of the handle holder 21. The handle 22 is used to rotate the rotating shaft 23 to pull the U-shaped frame 24. When locking, the rotating shaft 23 enters the让位切口211. When the rotating shaft 23 contacts the inner bottom wall of the让位切口211, the part of the U-shaped frame 24 close to the pulling and fixing frame 25 is higher than the part close to the rotating shaft 23, showing an inclined posture, avoiding the unlocking of the clamping table locking assembly 20 due to the rebounding force of the first sealing member 12 and the second sealing member 14, and improving the stability of the device during sealing.
[0031] Beneficial effects:
[0032] 1. Before performing a weld leakage test on the rocker arm C and the valve cover rotating shaft D, move the fixed clamping table 11 so that the first seal 12 is stuck outside the volute and the bushing, and make the sealing strip 15 on the first seal 12 contact the volute A and the bushing B. Pull the movable clamping table 13 to make the movable clamping table 13 slide on the bracket 10, so that the sealing strip 15 on the second seal 14 contacts the volute A and the bushing B. Then, make the clamping table locking assembly 20 tighten the fixed clamping table 11 and the movable clamping table 13, so that the first seal 12 and the second seal 14 clamp the two sealing strips 15 to complete the sealing at the volute A and the bushing B, avoiding the problem of gas leakage from the gap when applying a large pressure, and facilitating the detection and judgment of whether the weld between the rocker arm C and the valve cover rotating shaft D is airtight.
[0033] 2. When it is necessary for the clamping table locking assembly 20 to lock the fixed clamping table 11 and the movable clamping table 13, rotate the handle 22. When the handle 22 rotates, it drives the rotating shaft 23 to move. The movement of the rotating shaft 23 pulls the C-shaped frame 24, and the movement of the C-shaped frame 24 pulls the fixed pulling frame 25 to move, thereby making the movable clamping table 13 move, so that the movable clamping table 13 and the fixed clamping table 11 are locked. The operation of pulling the handle is simple and convenient, and the clamping can be quickly carried out during the test, which is relatively convenient to use.
[0034] Example 2: Example 2 is a further improvement based on Example 1. Refer to Figure 1-4 , for a plugging mechanism at the bushing of a volute weld leakage test in this embodiment, both ends of the C-shaped frame 24 are provided with threads, and a nut 29 is threadedly connected to the surface of the C-shaped frame 24 close to the rotating shaft 23.
[0035] Beneficial effects
[0036] 1. Rotate the nut 29 to adjust the fixed position of the C-shaped frame 24 and the rotating shaft 23, thereby adjusting the distance that the C-shaped frame 24 pulls the fixed pulling frame 25 to move, and further adjusting the pressure exerted by the seal on the sealing strip 15, which is convenient for the sealing strip 15 to maintain the seal at an appropriate pressure.
[0037] 2. At the same time, the adjustable C-shaped frame 24 can be配合 with replacing the first seal 12 and the second seal 14 of different sizes, so that the plugging mechanism can be adapted to volutes A and bushings B of different sizes, improving the applicable range of the mechanism.
[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not intended to limit it. Other modifications or equivalent substitutions made to the technical solution of the utility model by ordinary technicians in this field should be included in the scope of the claims of the utility model as long as they do not deviate from the spirit and scope of the technical solution of the utility model. The above are only preferred embodiments of the utility model and are not intended to limit the utility model. For technicians in this field, the utility model can have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the utility model.
Claims
1. A plugging mechanism for testing the liner of a volute weld leak, characterized in that: It includes a bracket (10). A fixed clamping table (11) is connected to the bottom of the bracket (10). A first seal (12) is installed at the bottom of the fixed clamping table (11). A movable clamping table (13) is slidably connected to one side of the bracket (10). A second seal (14) is installed at the bottom of the movable clamping table (13). Sealing strips (15) are arranged on the opposite sides of the first seal (12) and the second seal (14). A clamping table locking assembly (20) is arranged at the top of the bracket (10).
2. The plugging mechanism for the volute weld leak test bushing according to claim 1, characterized in that: The sealing strip (15) is composed of two layers of arc-shaped elastic materials with different ring diameters. The two groups of sealing strips (15) are used to clamp the bushing (B) and the volute (A).
3. The plugging mechanism for the volute weld leak test bushing according to claim 1, characterized in that: A T-shaped groove (16) is arranged on one side of the bracket (10). An I-shaped part (17) is arranged at the top of the movable clamping table (13). A sliding groove is formed in the recess of the I-shaped part (17) and is slidably connected to the inside of the T-shaped groove (16). The movable clamping table (13) is slidably connected to the bracket (10) through the I-shaped part (17) and the T-shaped groove (16).
4. The plugging mechanism for the volute weld leak test bushing according to claim 1, characterized in that: The clamping table locking assembly (20) includes a handle holder (21) installed at the top of the bracket (10). A handle (22) is rotatably arranged on one side of the handle holder (21). A rotating shaft (23) is arranged on the handle (22). A U-shaped frame (24) is installed at the end of the rotating shaft (23). A pulling and fixing frame (25) is installed at the top of the movable clamping table (13). One side of the pulling and fixing frame (25) is fixedly connected to the U-shaped frame (24).
5. The plugging mechanism for the volute weld leak test bushing according to claim 4, characterized in that: An anti-detachment limit block (26) is installed at the top of the movable clamping table (13). An accommodating groove (27) is arranged on one side of the anti-detachment limit block (26) and the pulling and fixing frame (25). The middle part of the U-shaped frame (24) is rotatably arranged inside the accommodating groove (27). A cushion sleeve (28) is sleeved on the middle part of the U-shaped frame (24).
6. The plugging mechanism for the volute weld leak test bushing according to claim 4, characterized in that: Threads are arranged at both ends of the U-shaped frame (24). A nut (29) is threadedly connected to the surface of the U-shaped frame (24) close to the rotating shaft (23).
7. The plugging mechanism for the volute weld leak test bushing according to claim 4, characterized in that: A让位切口(211) is arranged on one side of the handle holder (21). The handle (22) is used to rotate the rotating shaft (23) to pull the U-shaped frame (24). The让位切口(211) is used to enable the rotating shaft (23) to enter the让位切口(211) to make the U-shaped frame (24) inclined. It should be noted that the "让位切口" in the original text seems to be a specific term in Chinese, and it's not clear what it exactly means. It's translated as "让位切口" here as it's not clear what the accurate English equivalent should be. You may need to further clarify this term for a more accurate translation.