CN221055994U - Dry-type leak detection device of camshaft cover - Google Patents
Dry-type leak detection device of camshaft cover Download PDFInfo
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- CN221055994U CN221055994U CN202323157329.2U CN202323157329U CN221055994U CN 221055994 U CN221055994 U CN 221055994U CN 202323157329 U CN202323157329 U CN 202323157329U CN 221055994 U CN221055994 U CN 221055994U
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- 238000001514 detection method Methods 0.000 title claims abstract description 42
- 230000007246 mechanism Effects 0.000 claims abstract description 31
- 238000007789 sealing Methods 0.000 claims description 27
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 9
- 238000012360 testing method Methods 0.000 description 10
- 230000000903 blocking effect Effects 0.000 description 6
- 230000007547 defect Effects 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a dry leak detection device of a camshaft cover, which comprises a detection clamp, wherein the detection clamp comprises a clamp upper plate and a clamp bedplate positioned below the clamp upper plate, a high-pressure oil pump hole plugging mechanism is fixed on the lower surface of the clamp upper plate, an air inlet channel is formed in the high-pressure oil pump hole plugging mechanism, an air inlet connector is connected to an inlet of the air inlet channel, an outlet of the air inlet channel is positioned on a plugging surface of the high-pressure oil pump hole plugging mechanism, a positioning bottom plate is fixed on the clamp bedplate, a pressure taking channel is formed in the positioning bottom plate, a pressure taking opening of the pressure taking channel is formed in the upper surface of the positioning bottom plate, and an outlet of the pressure taking channel is positioned on any side surface of the positioning bottom plate and is provided with the pressure taking connector. The method has the advantages of few procedures, high efficiency, capability of detecting any hidden gas leakage position and high reliability of detection results.
Description
Technical Field
The utility model relates to the technical field of detection of engine parts, in particular to a dry type leak detection device of a camshaft cover.
Background
The shells such as a camshaft cover cap and a cylinder cover of the automobile engine can be made of alloy materials, and various holes for installing components such as a crankshaft, a camshaft, bolts, a sealing ring and the like are processed on the corresponding shells, and whether the processed holes meet the sealing requirement relates to the sealing performance of the assembled engine or not, so that the normal operation of the engine is related; in particular, in practical situations, the engine is affected by combustion of gas in the combustion chamber during operation, and the engine operates for a long time in a high temperature state, which puts more strict requirements on the sealing performance of the assembled related shell.
Therefore, it is necessary to perform a test of sealability performance at a simulated operating temperature of a housing such as a camshaft cover before shipment. At least two problems need to be solved in the detection, namely, the first is the simulation of the working temperature of the engine; and secondly, various holes on the shell are blocked as necessary.
Therefore, chinese patent CN 217403696U proposes a leakage detector for a camshaft cover, which is configured to quickly heat a test piece by immersing the test piece in hot water to simulate the working environment temperature of the camshaft cover of an automobile engine, so as to realize the detection of the sealing performance of the camshaft cover.
However, the wet detection method adopted in the patent has the advantages of more detection procedures, subsequent drying of the test piece and low detection efficiency. In addition, the observation position is limited during detection, and the gas leakage at the hidden part which is shielded is not easy to detect.
Disclosure of utility model
The utility model provides a dry leak detection device of a camshaft cover, which adopts the dry leak detection of pressurization-pressure maintaining-pressure detection, and can overcome the defects of low detection efficiency and difficult detection at a hidden leakage position in the prior art.
The utility model provides a dry-type leak hunting device of camshaft lid, includes detects anchor clamps, it includes the anchor clamps upper plate and is located the anchor clamps platen of anchor clamps upper plate below the lower surface mounting of anchor clamps upper plate has high-pressure oil pump hole shutoff mechanism, air inlet channel has been seted up to high-pressure oil pump hole shutoff mechanism, has the air inlet connector at the access connection of this air inlet channel, air inlet channel's export is located high-pressure oil pump hole shutoff mechanism's shutoff face be fixed with the positioning bottom plate on the anchor clamps platen, the pressure taking channel has been seted up in the positioning bottom plate, the upper surface of positioning bottom plate is located to the pressure taking mouth of this pressure taking channel, the export of pressure taking channel is located the arbitrary side of positioning bottom plate and is provided with the pressure taking connector.
Further, the high-pressure oil pump hole plugging mechanism comprises an oil cylinder seat fixed on the lower surface of the upper plate of the clamp and a plugging oil cylinder fixed on the lower portion of the oil cylinder seat, a plugging pressure head is fixedly connected to the telescopic end of the plugging oil cylinder, a plugging cover is arranged on the plugging pressure head, the plugging cover is fixedly connected with the plugging pressure head through a bolt, a sealing ring is arranged between the plugging cover and the plugging pressure head, an inlet of the air inlet channel is formed in the side wall of the plugging pressure head, and an outlet of the air inlet channel is formed in the plugging cover.
Further, the air inlet channel is L-shaped.
Further, a filling body which is matched with the inner space of the cam shaft cover is arranged on the positioning bottom plate, a pressure taking opening of the pressure taking channel is positioned on the upper surface of the filling body, and an outlet of the pressure taking channel is arranged on the rear side surface of the positioning bottom plate.
Further, a plurality of guide rods are fixed on the clamp bedplate, a linear bearing is fixed on the clamp upper plate, and the tops of the guide rods penetrate through the linear bearing.
Further, the lower surface of the fixture upper plate is also provided with a plurality of elastic pressure heads, and the elastic pressure heads respectively face the positioning bottom plate.
Further, the side leakage device further comprises a frame, an air storage tank is arranged in the bottom of the frame in an air manner, the air storage tank is connected with the air inlet connector through an air pipe, a supporting bedplate is arranged in the middle of the frame, the clamp bedplate is fixed on the supporting bedplate, a supporting upper plate is arranged on the upper portion of the frame, a lifting mechanism is fixed on the supporting upper plate, and the lifting end of the lifting mechanism is located below the supporting upper plate and is fixedly connected with the clamp upper plate.
Further, the elevating system is in including fixing the main lift jar of support upper plate upper surface and the auxiliary lift jar of symmetry locating main lift jar both sides, the lift end of main lift jar and auxiliary lift jar all is connected to the upper surface of clamp plate the lower surface laminating of clamp plate sets up the anchor clamps upper plate.
Furthermore, a plurality of guide posts are fixed on the pressing plate, the upper parts of the guide posts penetrate through the supporting upper plate, and a linear bearing is arranged between the supporting upper plate and the guide posts.
The beneficial effects are that: when the device is used for detecting, the detection clamp is used for realizing the sealing and the blocking of the camshaft cover test piece, then air is introduced through the air inlet channel, the camshaft cover is maintained at a certain air pressure and kept for a certain time after the ventilation, meanwhile, the pressure in the sealing area of the camshaft cover is detected, and the sealing performance of the camshaft cover test piece is judged according to the pressure detection result, so that the pressurizing-pressure maintaining-pressure detection process is realized, whether the camshaft cover leaks air or not is judged, and compared with the prior art, the defects that the working procedures are more, the efficiency is low, and the hidden part which is shielded leaks air is not easy to detect in the wet leakage detection process are effectively overcome.
Drawings
FIG. 1 is a schematic view of the structure of the corner of the present utility model;
FIG. 2 is a front view of the present utility model;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
FIG. 4 is an enlarged partial schematic view of C in FIG. 3;
FIG. 5 is a right side view of the present utility model;
FIG. 6 is a schematic structural view of a high pressure oil pump hole plugging mechanism;
FIG. 7 is a front view of a high pressure oil pump hole plugging mechanism;
Fig. 8 is a B-B cross-sectional view of fig. 7.
Detailed Description
The utility model is further described below with reference to examples and figures.
As shown in fig. 1-8, a dry leak detection device of a camshaft cover comprises a frame 1 and a detection clamp 4, wherein a gas storage tank 2 is arranged in the bottom of the frame 1 in the air, a support bedplate 3 is arranged in the middle of the frame 1, a support upper plate 5 is arranged at the upper part of the frame 1, a lifting mechanism 6 is fixed on the support upper plate 5, and the lifting end of the lifting mechanism 6 is positioned below the support upper plate 5;
The detection clamp 4 comprises a clamp upper plate 41 and a clamp bedplate 42 positioned below the clamp upper plate 41, the clamp upper plate 41 is fixedly connected with the lifting end of the lifting mechanism 6, the clamp bedplate 42 is fixed on the supporting bedplate 3, a high-pressure oil pump hole plugging mechanism 7 is fixed on the lower surface of the clamp upper plate 41, an air inlet channel 8 is formed in the high-pressure oil pump hole plugging mechanism 7, an air inlet connector 9 is connected to an inlet of the air inlet channel 8, the air inlet connector 9 is connected with the air storage tank 2 through an air pipe during leakage detection, an outlet of the air inlet channel 8 is positioned on a plugging surface of the high-pressure oil pump hole plugging mechanism 7, a positioning bottom plate 43 is fixed on the clamp bedplate 42, a pressure taking channel 10 is formed in the positioning bottom plate 43, a pressure taking opening of the pressure taking channel 10 is formed in the upper surface of the positioning bottom plate 43, an outlet of the pressure taking channel 10 is positioned on any side surface of the positioning bottom plate 43 and is provided with a pressure taking connector 11, and the pressure taking connector 11 leads the air pressure sensor to a PLC through a pipeline and outputs the pressure sensor to the PLC.
In this example, the air inlet channel 8 and the pressure taking channel 10 are both L-shaped, so as to facilitate processing.
Preferably, the lower surface of the upper plate 41 of the fixture is further provided with a plurality of elastic pressing heads 12 and other blocking mechanisms, and the elastic pressing heads 12 face the positioning bottom plate 43 respectively. The positions, the number, the depth and the size and the shape of the blocking surfaces of the elastic pressure heads 12 are determined according to the positions, the sizes and the shapes of holes to be blocked on the camshaft cover of the model to be detected.
Further, a plurality of guide rods 45 are fixed on the clamp platen 42, a first linear bearing 46 is fixed on the clamp upper plate 41, and the top of each guide rod 45 is inserted into the first linear bearing 46.
The positioning bottom plate 43 is provided with a filling body 44 which is matched with the inner space of the camshaft cover, a pressure taking opening of the pressure taking channel 10 is positioned on the upper surface of the filling body 44, and an outlet of the pressure taking channel 10 is arranged on the rear side surface of the positioning bottom plate 43.
By adopting the arrangement, the sealing area of the camshaft cover can be more conveniently pressed, so that the sealing performance can be conveniently detected.
In this embodiment, the lifting mechanism 6 includes a main lifting cylinder 61 fixed on the upper surface of the support upper plate 5 and auxiliary lifting cylinders 62 symmetrically disposed on two sides of the main lifting cylinder 61, lifting ends of the main lifting cylinder 61 and the auxiliary lifting cylinder 62 are connected to the upper surface of a pressing plate 63, the lower surface of the pressing plate 63 is attached to the clamp upper plate 41, a plurality of guide posts 64 are fixed on the pressing plate 63, and the upper portions of the guide posts 64 are disposed in the support upper plate 5 in a penetrating manner, and a second linear bearing 65 is disposed between the support upper plate 5 and the guide posts.
The main lift cylinder 61, the auxiliary lift cylinder 62, the guide post 64 and the second linear bearing 65 cooperate to ensure the lifting motion of the whole pressing plate 63, thereby avoiding the phenomenon that the detection result is unreliable because the camshaft cover cannot be well sealed.
Referring to fig. 6-8, the high-pressure oil pump hole plugging mechanism 7 includes an oil cylinder seat 71 fixed on the lower surface of the upper plate 41 of the clamp and a plugging oil cylinder 72 fixed on the lower portion of the oil cylinder seat 71, a plugging pressure head 73 is fixedly connected to the telescopic end of the plugging oil cylinder 72, a plugging cover 74 is covered on the plugging pressure head 73, the plugging cover 74 is fixedly connected with the plugging pressure head 73 through a bolt 75, a sealing ring 76 is arranged between the plugging cover 74 and the plugging pressure head 73, an inlet of the air inlet channel 8 is arranged on the side wall of the plugging pressure head 73, and an outlet of the air inlet channel 8 is arranged on the plugging cover 74. The sealing surface of the sealing cover 74 may be annular or spherical, and the sealing cover 74 may be made of a rubber material.
When leakage is detected, the high-pressure oil pump hole of the camshaft cover is blocked through the high-pressure oil pump hole blocking mechanism 7, and then gas in the gas storage tank 2 can be introduced into the sealing area of the camshaft cover through the blocking pressure head 73 and the blocking cover 74 through the gas inlet channel 8, so that the sealing performance of the camshaft cover is detected.
Working principle:
During testing, a camshaft cover test piece is placed on the positioning bottom plate 43, the lifting mechanism 6 drives the pressing plate 63 and the clamp upper plate 41 to move downwards until corresponding holes are pressed, sealed and fixed through the elastic pressing head 12 and the plugging mechanism, then gas in the gas storage tank 2 is introduced into a sealing area of the camshaft cover through the gas inlet channel 8, a certain gas pressure of the sealing area of the camshaft cover is maintained for a certain time, meanwhile, the pressure in the sealing area is led out to the pressure sensor through the pressure taking channel 10, the pressure in the sealing area is sampled and detected by the pressure sensor and output to the PLC controller, if the pressure maintenance is qualified, the pressure is not qualified after the pressure reduction is finished, the lifting mechanism 6 drives the pressing plate 63 and the clamp upper plate 41 to move upwards, the test piece is taken down, and the tightness detection of the next test piece can be realized by repeating the process.
In summary, in this embodiment, after the sealing area is formed after the sealing of the camshaft cover is plugged, after air is introduced into the sealing area, the air pressure of the sealing area is directly detected, so that the detection of the sealing performance of the camshaft cover can be realized, and a dry leak detection process of pressurization-pressure maintaining-pressure detection is formed, the procedures are less, the efficiency is high, any hidden leakage position can be detected, the reliability of the detection result is high, and the defects existing in the prior art are effectively overcome.
Finally, it should be noted that the above description is only a preferred embodiment of the present utility model, and that many similar changes can be made by those skilled in the art without departing from the spirit and scope of the utility model as defined in the appended claims.
Claims (9)
1. The utility model provides a dry-type leak hunting device of camshaft lid, includes detects anchor clamps (4), its characterized in that, detect anchor clamps (4) including anchor clamps upper plate (41) and be located anchor clamps platen (42) of anchor clamps upper plate (41) the lower fixed surface of anchor clamps upper plate (41) is equipped with high-pressure oil pump hole shutoff mechanism (7), inlet channel (8) have been seted up in high-pressure oil pump hole shutoff mechanism (7), have air inlet connector (9) at the entrance connection of this inlet channel (8), the export of inlet channel (8) is located the shutoff face of high-pressure oil pump hole shutoff mechanism (7) be fixed with positioning baseplate (43) on anchor clamps platen (42), set up in positioning baseplate (43) and get pressure channel (10), the pressure mouth that should get pressure channel (10) locates the upper surface of positioning baseplate (43), the export that gets pressure channel (10) is located arbitrary side of positioning baseplate (43) and is provided with and gets pressure connector (11).
2. The dry leak detection device of a camshaft cover according to claim 1, characterized in that the high-pressure oil pump hole plugging mechanism (7) comprises an oil cylinder seat (71) fixed on the lower surface of the fixture upper plate (41) and a plugging oil cylinder (72) fixed on the lower portion of the oil cylinder seat (71), a plugging pressure head (73) is fixedly connected to the telescopic end of the plugging oil cylinder (72), a plugging cover (74) is covered on the plugging pressure head (73), the plugging cover (74) is fixedly connected with the plugging pressure head (73) through a bolt (75), a sealing ring (76) is arranged between the plugging cover (74) and the plugging pressure head (73), an inlet of the air inlet channel (8) is arranged on the side wall of the plugging pressure head (73), and an outlet of the air inlet channel (8) is arranged on the plugging cover (74).
3. Dry leak detection device for a camshaft cover according to claim 2, characterized in that the air intake channel (8) is L-shaped.
4. The dry leak detection device of the camshaft cover according to claim 1, characterized in that a filling body (44) which is adapted to the inner space of the camshaft cover is arranged on the positioning bottom plate (43), the pressure taking opening of the pressure taking channel (10) is positioned on the upper surface of the filling body (44), and the outlet of the pressure taking channel (10) is arranged on the rear side surface of the positioning bottom plate (43).
5. The dry leak detection device for a camshaft cover according to claim 1, wherein a plurality of guide rods (45) are fixed on the jig platen (42), a first linear bearing (46) is fixed on the jig upper plate (41), and the top of the guide rods (45) is inserted into the first linear bearing (46).
6. The dry leak detection device for a camshaft cover according to claim 1, wherein the lower surface of the upper plate (41) of the jig is further provided with a plurality of elastic indenters (12), and the elastic indenters (12) are respectively directed to the positioning bottom plate (43).
7. The dry leak detection device of a camshaft cover according to any one of claims 1 to 6, characterized in that the side leak detection device further comprises a frame (1), a gas storage tank (2) is arranged in the bottom of the frame (1) in the air, the gas storage tank (2) is connected with the gas inlet joint (9) through a gas pipe, a supporting bedplate (3) is arranged in the middle of the frame (1), the fixture bedplate (42) is fixed on the supporting bedplate (3), a supporting upper plate (5) is arranged on the upper part of the frame (1), a lifting mechanism (6) is fixed on the supporting upper plate (5), and the lifting end of the lifting mechanism (6) is arranged below the supporting upper plate (5) and is fixedly connected with the fixture upper plate (41).
8. The dry leak detection apparatus of a camshaft cover according to claim 7, wherein the lifting mechanism (6) includes a main lifting cylinder (61) fixed to the upper surface of the support upper plate (5) and auxiliary lifting cylinders (62) symmetrically provided on both sides of the main lifting cylinder (61), lifting ends of the main lifting cylinder (61) and the auxiliary lifting cylinder (62) are connected to the upper surface of a pressing plate (63), and the clamp upper plate (41) is provided on the lower surface of the pressing plate (63) in a fitting manner.
9. The dry leak detection device for a camshaft cover according to claim 8, characterized in that a plurality of guide posts (64) are fixed on the pressing plate (63), the upper parts of the guide posts (64) are arranged in the support upper plate (5) in a penetrating way, and a second linear bearing (65) is arranged between the support upper plate (5) and the guide posts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323157329.2U CN221055994U (en) | 2023-11-22 | 2023-11-22 | Dry-type leak detection device of camshaft cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323157329.2U CN221055994U (en) | 2023-11-22 | 2023-11-22 | Dry-type leak detection device of camshaft cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221055994U true CN221055994U (en) | 2024-05-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323157329.2U Active CN221055994U (en) | 2023-11-22 | 2023-11-22 | Dry-type leak detection device of camshaft cover |
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| Country | Link |
|---|---|
| CN (1) | CN221055994U (en) |
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2023
- 2023-11-22 CN CN202323157329.2U patent/CN221055994U/en active Active
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