Engine plugging mechanism and leakage test bench

Abstract

The utility model discloses an engine plugging mechanism and a leakage test bench, and belongs to the technical field of engine testing. The engine plugging mechanism comprises an adjusting mechanism and a plugging assembly installed on one side of the adjusting mechanism. The adjusting mechanism is provided with a bottom plate, one side of the bottom plate is connected with a fixing plate, and the side, away from the bottom plate, of the fixing plate is connected with a push plate. The plugging assembly is provided with a plugging head and a sealing piece, the sealing piece is installed on one side of the plugging head, a shaft is installed on the side, away from the sealing piece, of the plugging head, and the shaft is in conical surface fit with the push plate. The engine plugging mechanism is simple in structure, stable and reliable in operation, low in cost, high in positioning precision, convenient to maintain in the later period and capable of being applied to any equipment needing automatic plugging, and a robot executing mechanism or a servo system is not needed. The shaft is matched with the conical surface of the push plate, the position of the plugging head can be fixed, when the conical surface of the shaft is separated from the conical hole in the push plate, the plugging head can be attached to the engine plugging opening in a self-adaptive mode within a certain range, and stable sealing is achieved.

Description

Technical Field

[0001] This utility model relates to an engine sealing mechanism and a leak test stand, belonging to the field of engine testing technology. Background Technology

[0002] The engine's sealing is crucial, as multiple internal systems (such as the cooling system, lubrication system, and fuel system) require a good seal. Therefore, several leak tests are conducted before the engine rolls off the production line to detect leaks in the engine block, cylinder head, water passages, oil passages, and other components.

[0003] In leak testing, sealing is an essential step. Sealing simulates the sealing state of an engine during actual operation, accurately detecting any leaks. Typically, sealing is performed at a specific station using specialized fixtures for manual or automatic sealing. For automatic sealing stations, the sealing mechanism usually needs to work in conjunction with a robotic actuator or rely on a servo system to precisely position the sealing port in space. However, robotic actuators and servo systems are expensive, increasing the overall cost of the leak testing equipment. In contrast, while manual sealing fixtures are less expensive, they require operator intervention and are prone to incomplete sealing due to improper operation, thus affecting the accuracy of the test results. Utility Model Content

[0004] This utility model provides an engine sealing mechanism and a leak testing platform to solve the problems of high cost of robot actuators and servo systems in automatic sealing, which increases the overall cost of leak testing equipment, and improper manual sealing operation leading to poor sealing and affecting the accuracy of test results.

[0005] This utility model is achieved through the following technical solution:

[0006] In a first aspect, the present invention provides an engine blocking mechanism, including an adjustment mechanism and a blocking component installed on one side of the adjustment mechanism, the blocking component being able to abut against the engine port;

[0007] The adjustment mechanism is provided with a base plate, a fixing plate is connected to one side of the base plate, and a push plate is connected to the side of the fixing plate opposite to the base plate;

[0008] The sealing assembly is provided with a sealing head and a sealing element. The sealing element is installed on one side of the sealing head, and a shaft is installed on the side of the sealing head opposite to the sealing element. The shaft and the push plate are in conical contact.

[0009] In one embodiment of this utility model, the base plate is equipped with a first fixing block, and the fixing plate is equipped with a first adjusting block.

[0010] In one embodiment of this utility model, the first fixing block and the first adjusting block are connected by a first connecting member, and a first gasket is sleeved on the outer periphery of the first connecting member.

[0011] In one embodiment of this utility model, a second fixing block is installed on the side of the fixing plate perpendicular to the first fixing block, and a second adjusting block is installed on the push plate.

[0012] In one embodiment of this utility model, the second fixing block and the second adjusting block are connected by a second connecting member, and a second gasket is sleeved on the outer periphery of the second connecting member.

[0013] In one embodiment of this utility model, the first connecting member and the second connecting member are bolts. The distance between the two connecting members can be adjusted by the thread advance distance, and the connection is firm, the structure is simple, and the manufacturing cost is low.

[0014] In one embodiment of this utility model, the first gasket and the second gasket are grinding gaskets. The thickness of the grinding gaskets can be adjusted according to actual needs, and they have properties such as wear resistance, high temperature resistance, and corrosion resistance.

[0015] In one embodiment of this utility model, the fixing plate and the push plate are provided with oblong holes. This facilitates the adjustment of the position of the fixing plate and the push plate, allowing the sealing assembly to be adjusted within ±5mm in the horizontal or vertical direction relative to the sealing center position.

[0016] In one embodiment of this invention, a drive mechanism and a sensor are further included. The sensor is mounted on one side of the drive mechanism, which is connected to the base plate. The drive mechanism drives the adjustment mechanism to move the sealing assembly, thereby sealing the holes in the engine that need to be sealed. The sensor is connected to the drive mechanism and is used to detect the position of the sealing assembly.

[0017] Secondly, this utility model provides a leak test platform, including the aforementioned engine sealing mechanism, and also includes an engine head base, wherein the sealing mechanism is mounted on the engine head base.

[0018] Beneficial effects

[0019] This utility model provides an engine plugging mechanism with a simple structure, stable and reliable operation, no need for robot actuators or servo systems, low cost, high positioning accuracy, and easy maintenance. It can be applied to any equipment requiring automatic plugging simply by replacing the plugging head. By adjusting the thickness of the first and second shims, the positions of the fixing plate and push plate can be adjusted, allowing the plugging assembly to be adjusted horizontally or vertically relative to the plugging center. The shaft and the conical surface of the push plate cooperate to fix the position of the plugging head. When the conical surface of the shaft disengages from the conical hole on the push plate, the plugging head can adaptively fit the engine plugging opening within a certain range, achieving a stable seal. Attached Figure Description

[0020] Figure 1 A perspective view of the sealing mechanism provided by this utility model;

[0021] Figure 2 A perspective view of the adjustment mechanism provided by this utility model;

[0022] Figure 3 A perspective view of the sealing component in its free state provided by this utility model;

[0023] Figure 4 A perspective view of the sealing state of the sealing component provided by this utility model;

[0024] Figure 5 A cross-sectional view of the sealing component provided by this utility model;

[0025] Figure 6 A perspective view of the sealing mechanism and the leak test platform provided by this utility model in combination;

[0026] In the diagram: 100, sealing mechanism; 200, leak testing platform;

[0027] 1. Adjustment mechanism; 11. Base plate; 12. Push plate; 13. Fixing plate; 14. First fixing block; 15. First connecting piece; 16. First shim; 17. First adjusting block; 18. Second fixing block; 19. Second connecting piece; 110. Second shim; 111. Second adjusting block;

[0028] 2. Sealing assembly; 21. Sealing head; 22. Seal; 23. Elastomer; 24. Shaft; 241. Groove; 25. Limiting block;

[0029] 3. Drive mechanism; 31. Cylinder; 32. Mounting plate;

[0030] 4. Sensors; 201. Headstock. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] like Figures 1 to 6 As shown in the figure, this application embodiment provides an engine sealing mechanism 100, which is installed on a leak test stand 200 for sealing the engine during a leak test. The sealing mechanism 100 includes an adjustment mechanism 1, a sealing component 2, a drive mechanism 3, and a sensor 4. The sealing component 2 is installed on one side of the adjustment mechanism 1, and the drive mechanism 3 is located on the side of the adjustment mechanism 1 opposite to the sealing component 2 and is connected to the adjustment mechanism 1. The adjustment mechanism 1 is used to adjust the position of the sealing component 2 so that the center of the sealing component 2 is aligned with the center of the hole in the engine that needs to be sealed. The drive mechanism 3 drives the adjustment mechanism 1 to move the sealing component 2, thereby sealing the hole in the engine that needs to be sealed. The sensor 4 is connected to the drive mechanism 3 and is used to detect the position of the sealing component 2.

[0035] like Figure 2As shown, in some embodiments, the adjusting mechanism 1 is provided with a base plate 11. A fixing plate 13 is connected to the side of the base plate 11 opposite to the drive mechanism 3. A push plate 12 is installed on the side of the fixing plate 13 opposite to the base plate 11. A first fixing block 14 is installed on one side of the base plate 11, and a first adjusting block 17 is installed on the fixing plate 13. The first adjusting block 17 and the first fixing block 14 are located on the same side. The first adjusting block 17 and the first fixing block 14 are connected by a first connecting member 15. The first connecting member 15 is an adjustable structure that can adjust the distance between the first adjusting block 17 and the first fixing block 14. A first shim 16 is also installed between the first adjusting block 17 and the first fixing block 14. The first shim 16 is sleeved on the outer periphery of the first connecting member 15, and the thickness of the first shim 16 can be set according to actual needs. During assembly, the thickness of the first shim 16 is adjusted according to the design position, thereby adjusting the position of the fixing plate 13. After adjusting to the appropriate position, the fixing plate 13 is completely fixed to the base plate 11, and the thickness of the first shim 16 is recorded so that the first shim 16 can be directly replaced during later maintenance without further adjustment.

[0036] In some implementations, a second fixing block 18 is installed on the side of the fixing plate 13 perpendicular to the first fixing block 14. A second adjusting block 111 is provided on the push plate 12, and the second adjusting block 111 and the second fixing block 18 are located on the same side and arranged parallel to each other. The second fixing block 18 and the second adjusting block 111 are connected by a second connecting member 19, which is the same as the first connecting member 15 and is an adjustable structure. A second shim 110 is also provided between the second fixing block 18 and the second adjusting block 111, and the second shim 110 is sleeved on the outer periphery of the second connecting member 19. During assembly, the thickness of the second shim 19 is adjusted according to the design position, thereby adjusting the position of the push plate 12. After the push plate 12 is adjusted to the appropriate position, the push plate 12 is completely fixed to the fixing plate 13, and the thickness of the second shim 19 is recorded so that the second shim 19 can be directly replaced during later maintenance without readjustment.

[0037] Furthermore, in some embodiments, both the fixing plate 13 and the push plate 12 are provided with waist-shaped holes to facilitate the adjustment of the positions of the fixing plate 13 and the push plate 12, enabling the sealing assembly 2 to be adjusted in the horizontal or vertical direction by ±5mm relative to the sealing center position.

[0038] like Figures 3 to 5 As shown, in some embodiments, a sealing assembly 2 is installed on the side of the push plate 12 opposite to the second fixing block 18. The sealing assembly 2 includes a sealing head 21, a sealing element 22, an elastic body 23, and a shaft 24. The shaft 24 passes through a hole in the push plate 12 and is connected to the sealing head 21. The sealing element 22 is embedded in the side of the sealing head 21 opposite to the shaft 24. The elastic body 23 is sleeved on the outer periphery of the shaft 24, and its two ends abut against the sealing head 21 and the push plate 12, respectively.

[0039] Furthermore, in some embodiments, the end of the shaft 24 facing away from the sealing head 21 is conical, with its radial direction gradually decreasing towards the sealing head 21. The hole on the push plate 12 is also a conical hole, with its radial direction gradually decreasing towards the elastic body 23. A groove 241 is provided at the end of the shaft 24 facing away from the sealing head 21, and a limiting block 25 is installed on the side of the push plate 12 facing away from the elastic body 23. The limiting block 25 can abut against the groove 241 to restrict the rotation of the shaft 24. In the free state, the elastic body 23 causes the conical surface of the shaft 24 to engage with the conical hole of the push plate 12, thereby fixing the sealing head 21. During the sealing process, the drive mechanism 3 pushes out the adjustment mechanism 1 and the sealing assembly 2. The sealing head 21 with the seal 22 abuts against the sealing port of the engine. The elastic body 23 is compressed, the conical surface of the shaft 24 disengages from the conical hole on the push plate 12, and the limiting block 25 disengages from the restriction of the groove 241. At this time, the sealing head 21 has a certain degree of flexibility and can adaptively fit the engine sealing port within a certain range. After the sensor 4 detects that the mechanism is in place, the sealing is completed. After the test is completed, the drive mechanism 3 retracts, the elastic body 23 resets, the shaft 24 re-engages with the push plate 12, and the limiting block 25 returns to the groove 241, so that the sealing head 21 returns to its original position in space.

[0040] In some embodiments, the drive mechanism 3 includes a cylinder 31 and a mounting plate 32. The cylinder 31 is fixed on the mounting plate 32, and the sensor 4 is mounted on the mounting plate 32 to detect the position of the sealing head 21. The power output end of the cylinder 31 is connected to the base plate 11. Driven by the cylinder 31, the base plate 11 drives the adjustment mechanism 1 and the sealing assembly 2 to move, thereby completing the sealing of the engine port.

[0041] Optionally, both the first connector 15 and the second connector 19 are adjusting bolts, which can adjust the distance between the two connectors by screwing in the thread, and the connection is firm, the structure is simple, and the manufacturing cost is low.

[0042] Optionally, both the first gasket 16 and the second gasket 110 are wear-matching gaskets, and the thickness of the wear-matching gaskets can be adjusted according to actual needs. They have wear-resistant, high-temperature resistant, and corrosion-resistant properties.

[0043] Optionally, the elastomer 23 is a spring, which has a simple structure, high reliability, low maintenance cost, is suitable for various working conditions, and is easy to install and replace.

[0044] In addition, such as Figure 6As shown, this utility model also provides a leak test platform 200, which includes the aforementioned sealing mechanism 100. The leak test platform 200 also includes a machine head base 201, on which the sealing mechanism 100 is mounted. The engine is clamped by a clamping device, and the drive mechanism 3 drives the adjustment mechanism 1 and the sealing assembly 2 to move, causing the sealing head 21 to abut against the engine port for sealing. This sealing mechanism 100 can be used in any equipment requiring automatic sealing; depending on the sealing port, only the sealing head 21 needs to be changed.

[0045] The working principle of this utility model is as follows: In the engine leak test, the engine is clamped onto the leak test platform 200 using a clamping device. During assembly, the positions of the fixing plate 13 and the push plate 12 are adjusted to ensure that the spatial position of the sealing head 21 meets the design requirements. Then, the sealing mechanism 100 is installed on the engine head base 201. The drive mechanism 3 is activated, and the cylinder 31 pushes out the adjustment mechanism 1 and the sealing assembly 2. The sealing head 21 abuts against the sealing port of the engine, the elastic body 23 is compressed, the conical surface of the shaft 24 disengages from the conical hole on the push plate 12, and the limiting block 25 disengages from the restriction of the groove 241. At this time, the sealing head 21 has a certain degree of flexibility and can adaptively fit the engine sealing port within a certain range. After the sensor 4 detects that the mechanism is in place, the sealing is completed. After the test is completed, the cylinder 31 retracts, the elastic body 23 resets, and the shaft 24 re-engages with the push plate 12, allowing the sealing head 21 to return to its original spatial position.

[0046] The sealing mechanism 100 has a simple structure, stable and reliable operation, requires no robot mechanism or servo system, is low in cost, has high positioning accuracy, and is easy to maintain. It can be applied to any equipment requiring automatic sealing simply by replacing the sealing head 21. During assembly, the positions of the fixing plate 13 and the push plate 12 can be adjusted by adjusting the thickness of the first shim 16 and the second shim 19, allowing the sealing assembly 2 to be adjusted horizontally or vertically by ±5mm relative to the sealing center position. When the sealing head 21 is not in contact with the engine, the shaft 24 engages with the conical surface of the push plate 12, keeping the spatial position of the sealing head 21 relatively fixed. When the sealing head 21 comes into contact with the engine, the elastic body 23 is compressed, and the conical surface of the shaft 24 disengages from the conical hole on the push plate 12. The sealing head 21 can adaptively conform to the engine sealing port within a certain range, achieving a stable seal.

[0047] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0048] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.

[0049] This document uses specific embodiments to illustrate the principles and implementation methods of this utility model. The descriptions of these embodiments are merely for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An engine sealing mechanism, characterized in that, It includes an adjustment mechanism (1) and a sealing assembly (2) installed on one side of the adjustment mechanism (1), the sealing assembly (2) being able to abut against the engine port; The adjustment mechanism (1) is provided with a base plate (11), a fixing plate (13) is connected to one side of the base plate (11), and a push plate (12) is connected to the side of the fixing plate (13) away from the base plate (11). The sealing assembly (2) is provided with a sealing head (21) and a sealing element (22). The sealing element (22) is installed on one side of the sealing head (21). A shaft (24) is installed on the side of the sealing head (21) away from the sealing element (22). The shaft (24) and the push plate (12) are in conical contact.

2. The engine sealing mechanism according to claim 1, characterized in that, The base plate (11) is equipped with a first fixing block (14), and the fixing plate (13) is equipped with a first adjusting block (17).

3. The engine sealing mechanism according to claim 2, characterized in that, The first fixing block (14) and the first adjusting block (17) are connected by a first connector (15), and a first gasket (16) is sleeved on the outer periphery of the first connector (15).

4. The engine sealing mechanism according to claim 3, characterized in that, A second fixing block (18) is installed on the side of the fixing plate (13) perpendicular to the first fixing block (14), and a second adjusting block (111) is installed on the push plate (12).

5. An engine sealing mechanism according to claim 4, characterized in that, The second fixing block (18) and the second adjusting block (111) are connected by a second connector (19), and a second gasket (110) is sleeved on the outer periphery of the second connector (19).

6. An engine sealing mechanism according to claim 5, characterized in that, The first connector (15) and the second connector (19) are bolts.

7. An engine sealing mechanism according to claim 6, characterized in that, The first gasket (16) and the second gasket (110) are grinding gaskets.

8. An engine sealing mechanism according to claim 1, characterized in that, The fixing plate (13) and the push plate (12) are provided with waist-shaped holes.

9. An engine sealing mechanism according to claim 1, characterized in that, It also includes a drive mechanism (3) and a sensor (4), the sensor (4) being mounted on one side of the drive mechanism (3), the drive mechanism (3) being connected to the base plate (11).

10. A leak testing platform, characterized in that, The engine sealing mechanism includes any one of claims 1-9, wherein the leak test stand (200) further includes an engine head seat (201), and the sealing mechanism (100) is mounted on the engine head seat (201).

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