An airtightness detection device for an automotive supercharger assembly

Abstract

The present invention relates to the technical field of the production of automotive superchargers, and specifically relates to an airtightness detection device for an automotive supercharger assembly, including a base. A limit seat for supporting and limiting the turbocharger housing is fixedly installed on the upper end surface of the base. A support column is fixedly installed on the upper end surface of the base behind the limit seat, and a positioning mechanism is arranged on the support column. An integrated operation model of positioning, external support, and internal sealing is adopted to complete the airtightness detection of the turbocharger housing, achieving high-precision positioning of the seal and the housing. Before pressurization, a triangular connection is used for overall locking, and the sealing plate is fixed again from the inside. At the same time, the rubber bump is tightly attached to the housing by internal expansion extrusion, thereby greatly improving the rigidity and stability of the entire sealing system, ensuring uniform stress on the seal, effectively reducing the risk of stress concentration and gas leakage, and thus improving the reliability and efficiency of the detection process and the accuracy of the test results.

Description

Technical Field

[0001] The present invention relates to the technical field of the production of automotive superchargers, and specifically to an airtightness detection device for an automotive supercharger assembly. Background Art

[0002] An automotive supercharger is a device that enhances the engine's power output by increasing the engine's intake air volume. It uses the exhaust gas discharged from the engine to drive a turbine, thereby compressing fresh air into the engine cylinder to improve the combustion efficiency and power output. Among them, the turbocharger housing (as Figure 9 shown) is one of the important components of the automotive supercharger assembly, mainly used to protect the core components of the turbocharger and guide the flow of exhaust gas and intake air. Therefore, in order to stably deliver the compressed air into the engine, it is necessary to perform airtightness detection on the turbocharger housing during the production process to ensure that the turbocharger housing has good sealing performance, maintain the stability of the engine intake pressure, and improve the combustion efficiency and working performance of the engine.

[0003] Currently, there are the following disadvantages when performing airtightness detection on the turbocharger housing: 1. When performing airtightness detection, the housing needs to be first placed in a sealing fixture, then a specific pressure is applied to the inside of the housing, and a detector is used to monitor the pressure change inside the housing to determine whether the sealing performance of the housing is qualified. However, in the above operation, when sealing and clamping the housing, the three fixtures for blocking the air outlet and the holes on both sides of the housing are independent of each other. Therefore, it is easy to cause inconsistent clamping forces of the fixtures, resulting in a small gap between the fixture and the housing, thereby increasing the leakage risk and affecting the accuracy of the detection results. At the same time, using multiple independent fixtures will increase the operation steps and prolong the detection time; 2. When performing airtightness detection, when blocking the holes on both sides of the housing, usually only rubber materials are used to seal them. These rubber materials lack fixed support points. Therefore, during high-pressure testing, the rubber materials are prone to deformation or displacement under pressure, and may be pressed into the holes or detached from the hole edges. The unstable seal will cause micro-air pressure leakage, thereby affecting the accuracy of the detection. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides an airtightness detection device for an automotive supercharger assembly, which is achieved by the following specific technical means: An airtightness detection device for an automotive supercharger assembly includes a base. A limit seat for supporting and limiting the turbocharger housing is fixedly installed on the upper end surface of the base. A support column is fixedly installed on the upper end surface of the base behind the limit seat. A positioning mechanism is arranged on the support column, and a sealing mechanism cooperating with it is arranged on the positioning mechanism.

[0005] The alignment mechanism described above includes an air inlet part that is arranged on the support column and is used for hermetically fixing the upper end of the housing and injecting air into its interior. A side alignment part is arranged on the support column and is used for synchronously approaching the sealing mechanism to both left and right sides of the housing.

[0006] The sealing mechanism described above includes an execution part that is arranged on the side alignment part and is used for cooperating with it to hermetically seal both left and right sides of the housing synchronously. A limiting part is arranged on the side alignment part and is used for internally supporting and fixing the execution part during the sealing process of the execution part. An expansion sealing part and a cooperating part are arranged on the execution part and are used for cooperating with the side alignment part to make the execution part fit with both left and right sides inside the housing through internal expansion.

[0007] A support mechanism is arranged on the alignment mechanism and cooperates with it; the support mechanism described above includes an inclined connecting part that is arranged on the air inlet part and is used for obliquely supporting the air inlet part and the side alignment part. A horizontal connecting part is arranged on the side alignment part and is used for horizontally supporting it. A locking part is arranged on the support column and is used for locking the inclined connecting part and the horizontal connecting part. The support mechanism ensures the sealed connection between the execution part and the air inlet part to the housing through triangular locking.

[0008] As a preferred technical solution of the present invention, the air inlet part includes a cylinder, a first slide rail, a support frame, and an air inlet pipe. The front end face of the support column is fixedly installed with a cylinder through a set support plate. The front end face of the support column is fixedly installed with a first slide rail located below the support plate. A support frame is slidably installed on the front end face of the first slide rail. The support frame is composed of an upper horizontal plate, an intermediate support rod, and a lower horizontal plate. The upper horizontal plate is fixedly connected to the telescopic end of the cylinder. The air inlet pipe is fixedly installed through the lower horizontal plate.

[0009] As a preferred technical solution of the present invention, the side alignment part includes a second slide rail, a bidirectional screw rod, and a support arm. The front end face of the support column is fixedly installed with a second slide rail located below the first slide rail. A bidirectional screw rod is installed through the second slide rail by a bearing. Support arms that are symmetric left and right and are threadedly connected to the bidirectional screw rod are slidably installed on the front end face of the second slide rail. The symmetric left and right support arms are respectively located on the left and right sides of the limit seat.

[0010] As a preferred technical solution of the present invention, the inclined connecting part includes a first sleeve, a first slide rod, and a lock hole. The lower horizontal plate on the support frame is symmetrically provided with first sleeves that are hinged through support seats on the left and right. A first slide rod located inside the corresponding first sleeve is hinged to the upper end face of the support arm through a set support seat. The first slide rod is slidably connected to the corresponding first sleeve. A first spring is fixedly installed between the first sleeve and the support seat on the corresponding first slide rod. Two lock holes that are distributed up and down are commonly penetrated on the first slide rod and the corresponding first sleeve.

[0011] As a preferred technical solution of the present invention, the cross-connecting part includes a second sleeve and a second sliding rod. The right end face of the support arm on the left side is fixedly installed with a second sleeve located between the base and the limit seat. The left end face of the support arm on the right side is fixedly installed with a second sliding rod located inside the second sleeve. The second sliding rod is slidably connected to the second sleeve. Two locking holes are also jointly opened on the second sleeve and the second sliding rod and are distributed left and right.

[0012] As a preferred technical solution of the present invention, the locking part includes a first electric push rod, a connecting cross plate, a triangular plate, a T-shaped frame and a locking rod. The rear end face of the support column is fixedly installed with a first electric push rod through a C-shaped bracket provided. The telescopic end of the first electric push rod is fixedly installed with a connecting cross plate located behind the support column. The front end face of the connecting cross plate is fixedly installed with a triangular plate located in front of the support column through a support rod provided. The front end face of the triangular plate is fixedly installed with a T-shaped frame located at its diagonal. The front end face of the T-shaped frame is fixedly installed with locking rods corresponding to the locking holes one by one.

[0013] As a preferred technical solution of the present invention, the execution part includes a sealing plate, a rubber bump, a positioning cylinder, a positioning insertion cylinder and a gas pressure gauge. The side walls of the front ends of the support arms close to each other are fixedly installed with sealing plates. The side walls of the sealing plates close to each other are fixedly installed with rubber bumps. The center of the right end face of the sealing plate on the left side is fixedly installed with a positioning cylinder. The center of the left end face of the sealing plate on the right side is fixedly installed with a positioning insertion cylinder located inside the positioning cylinder. The positioning cylinder is slidably connected to the positioning insertion cylinder. A gas pressure gauge is fixedly installed on the support arm on the left side.

[0014] As a preferred technical solution of the present invention, the limiting part includes a limiting rod, a top rod and a second electric push rod. A plurality of limiting holes are penetrated through the outer ring wall of the positioning insertion cylinder in a circumferential array manner. A matching hole corresponding to the limiting hole is penetrated through the outer ring wall of the positioning cylinder. The limiting rod is slidably installed in the limiting hole. Both ends of the limiting rod are rounded. A second spring is fixedly installed between the limiting rod and the limiting hole. A top rod is slidably installed in the positioning insertion cylinder. The top rod is composed of a cone at the left end and a cylinder at the right end. A second electric push rod is fixedly installed in the sealing plate on the right side. The telescopic end of the second electric push rod is fixedly connected to the top rod.

[0015] As a preferred technical solution of the present invention, the expansion and sealing part includes a sliding ring, a first connecting rod and an arc-shaped abutting block. A sliding ring is slidably installed on the outer ring wall of the positioning insertion cylinder. A third spring sleeved on the positioning insertion cylinder is fixedly installed between the sliding ring and the corresponding sealing plate. A plurality of first connecting rods are hinged to the outer ring wall of the sliding ring through torsion spring rods arranged in a circumferential array. The end of the first connecting rod far from the sliding ring is fixedly installed with an arc-shaped abutting block that fits with the corresponding rubber bump.

[0016] As a preferred technical solution of the present invention, the fitting portion includes a circular sliding plate, a groove and a second connecting rod. A circular sliding plate is slidably installed in the alignment cylinder. A fourth spring is fixedly installed between the circular sliding plate and the corresponding sealing plate. A plurality of grooves are penetrated through the outer wall of the alignment cylinder in a circumferential array manner. An arc-shaped abutting block that is in contact with the corresponding rubber bump is fixedly installed at one end of the second connecting rod away from the circular sliding plate through a torsion spring rod provided on the outer wall of the circular sliding plate.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. For this airtightness detection device for automotive supercharger components, through the combined use of the alignment mechanism, the support mechanism and the sealing mechanism, an integrated operation model of alignment, external support and internal sealing is adopted to complete the airtightness detection of the turbocharger housing, realizing high-precision alignment of the seal and the housing. Before pressurization, triangular connection is used for overall locking, and the sealing plate is fixed again from the inside. At the same time, the rubber bump is tightly fitted with the housing by internal expansion extrusion, thereby greatly improving the rigidity and stability of the entire sealing system, ensuring uniform force on the seal and reasonable pressure distribution, effectively reducing the risk of stress concentration and gas leakage, and thus improving the reliability, efficiency of the detection process and the accuracy of the test results.

[0018] 2. For this airtightness detection device for automotive supercharger components, through the combined use of the alignment mechanism and the support mechanism, before pressurizing the inside of the turbocharger housing, the sealing plates on the left and right sides of the housing and the support frame at the upper end are locked by triangular connection, so that the external seals are formed into a whole during the detection process, thereby improving the rigidity and stability of the entire sealing system. At the same time, the overall locking can better resist the internal pressure under high-pressure conditions, avoid gas leakage, and ensure uniform distribution of the sealing pressure.

[0019] 3. For this airtightness detection device for automotive supercharger components, through the combined use of the support mechanism and the sealing mechanism, before pressurization, the sealing plates on the left and right sides are locked again from the inside of the turbocharger housing, making the contact between the sealing plate and the housing closer, reducing the tiny gap to improve the airtightness, and improving the reliability of the test data. At the same time, the internal locking can evenly disperse the force generated by the internal pressure, reduce the stress concentration at the edge of the sealing plate, avoid seal failure caused by excessive local force, and ensure more reliable sealing performance throughout the detection process.

[0020] 4. The airtightness detection device for the automotive supercharger assembly, through the set sealing mechanism, during the alignment process, the inner expansion extrudes the rubber bump outwards, making the rubber bump fit tightly with the inner surface of the turbocharger housing. The inner expansion provides a fixed support point for the rubber bump, enabling it to form a stable sealing state. In this way, during high-pressure or long-term tests, the rubber bump can still maintain stable sealing performance, thereby further improving the accuracy of the test results. Moreover, the inner expansion can ensure that the rubber bump is evenly stressed, thus optimizing the contact pressure distribution between the seal and the housing and preventing the seal from being damaged or failing. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a three-dimensional structural schematic diagram of the present invention during operation.

[0022] Figure 2 is a three-dimensional structural schematic diagram of the alignment mechanism of the present invention.

[0023] Figure 3 is a three-dimensional structural schematic diagram of the support mechanism of the present invention.

[0024] Figure 4 is a three-dimensional structural schematic diagram of the execution part of the present invention.

[0025] Figure 5 is a three-dimensional structural schematic diagram of the sealing mechanism of the present invention.

[0026] Figure 6 is Figure 5 an enlarged structural schematic diagram of part A in

[0027] Figure 7 is Figure 5 an enlarged structural schematic diagram of part B in

[0028] Figure 8 is Figure 5 an enlarged structural schematic diagram of part C in

[0029] Figure 9 is a three-dimensional structural schematic diagram of the turbocharger housing.

[0030] In the figure: 1, base; 2, limit seat; 3, support column; 4, alignment mechanism; 41, air inlet part; 411, cylinder; 412, first slide rail; 413, support frame; 414, air inlet pipe; 42, side alignment part; 421, second slide rail; 422, bidirectional screw; 423, support arm; 5, support mechanism; 51, inclined connection part; 511, first sleeve; 512, first slide bar; 513, locking hole; 52, horizontal connection part; 521, second sleeve; 522, second slide bar; 53, locking part; 531, first electric push rod; 532, connecting horizontal plate; 533, triangular plate; 534, T-shaped frame; 535, locking rod; 6, sealing mechanism; 61, execution part; 611, sealing plate; 612, rubber bump; 613, alignment cylinder; 614, alignment insertion cylinder; 615, gas pressure gauge; 62, limiting part; 621, limiting rod; 622, ejector rod; 623, second electric push rod; 63, expansion sealing part; 631, sliding ring; 632, first connecting rod; 633, arc-shaped abutting block; 64, matching part; 641, circular sliding plate; 642, groove; 643, second connecting rod. Detailed implementation mode

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0032] Please refer to Figure 1 and Figure 9 A hermeticity detection device for an automotive supercharger assembly, including a base 1, a limit seat 2 fixedly installed on the upper end surface of the base 1 for supporting and limiting the turbocharger housing, a support column 3 fixedly installed on the upper end surface of the base 1 behind the limit seat 2, an alignment mechanism 4 is arranged on the support column 3, and a sealing mechanism 6 cooperating with the alignment mechanism 4 is arranged on the alignment mechanism 4; the alignment mechanism 4 includes an air inlet part 41 arranged on the support column 3 for hermetically fixing the upper end of the housing and injecting air into it, and a side alignment part 42 for synchronously approaching the sealing mechanism 6 to both sides of the housing is arranged on the support column 3.

[0033] Please refer to Figure 1 and Figure 5 The sealing mechanism 6 includes an execution part 61 arranged on the side alignment part 42 for hermetically sealing both sides of the housing synchronously in cooperation with it, a limiting part 62 for internally supporting and fixing the execution part 61 during the sealing process of the execution part 61 is arranged on the side alignment part 42, and an expansion sealing part 63 and a matching part 64 for cooperating with the side alignment part 42 to make the execution part 61 fit with the left and right sides inside the housing through internal expansion are arranged on the execution part 61.

[0034] Please refer to Figure 1 where a supporting mechanism 5 is provided on the alignment mechanism 4 for cooperation therewith; the supporting mechanism 5 includes an inclined connecting portion 51 provided on the air inlet portion 41 and used for obliquely supporting the air inlet portion 41 and the side-facing portion 42, a transverse connecting portion 52 provided on the side-facing portion 42 and used for transversely supporting the side-facing portion 42, a locking portion 53 provided on the support column 3 and used for locking the inclined connecting portion 51 and the transverse connecting portion 52, and the supporting mechanism 5 ensures the sealed connection of the actuator 61 and the air inlet portion 41 to the housing through triangular locking.

[0035] Please refer to Figure 1 、 Figure 2 and Figure 3 where the air inlet portion 41 includes a cylinder 411, a first slide rail 412, a support frame 413, and an air inlet pipe 414. The front end face of the support column 3 is fixedly installed with a cylinder 411 through a set support plate, and the front end face of the support column 3 is fixedly installed with a first slide rail 412 located below the support plate. A support frame 413 is slidably installed on the front end face of the first slide rail 412. The support frame 413 is composed of an upper horizontal plate, an intermediate support rod, and a lower horizontal plate. The upper horizontal plate is fixedly connected to the telescopic end of the cylinder 411, and an air inlet pipe 414 is fixedly installed through the lower horizontal plate.

[0036] Please refer to Figure 1 and Figure 2 where the side-facing portion 42 includes a second slide rail 421, a bidirectional screw 422, and a support arm 423. The front end face of the support column 3 is fixedly installed with a second slide rail 421 located below the first slide rail 412. A bidirectional screw 422 is installed through the second slide rail 421 by means of a bearing. On the front end face of the second slide rail 421, support arms 423 that are symmetrically arranged left and right and threadedly connected to the bidirectional screw 422 are slidably installed. The symmetrically arranged support arms 423 are respectively located on the left and right sides of the limit seat 2.

[0037] Please refer to Figure 1 、 Figure 2 、 Figure 4 and Figure 5 where the actuator 61 includes a sealing plate 611, a rubber bump 612, an alignment cylinder 613, an alignment insertion cylinder 614, and a gas pressure gauge 615. Sealing plates 611 are fixedly installed on the mutually approaching side walls of the front ends of the support arms 423. Rubber bumps 612 are fixedly installed on the mutually approaching side walls of the sealing plates 611. An alignment cylinder 613 is fixedly installed at the center of the right end face of the sealing plate 611 on the left side. An alignment insertion cylinder 614 located inside the alignment cylinder 613 is fixedly installed at the center of the left end face of the sealing plate 611 on the right side. The alignment cylinder 613 is slidably connected to the alignment insertion cylinder 614. A gas pressure gauge 615 is fixedly installed on the support arm 423 on the left side.

[0038] During specific operation, when it is necessary to perform an airtightness test on the turbocharger housing, place the turbocharger housing on the limit seat 2 to limit the housing. Then start the cylinder 411 to lower the support frame 413 with it, and the first slide rail 412 restricts its sliding direction. When the lower cross plate at the lower end of the support frame 413 contacts the upper end of the housing, fix the upper end of the housing through a fixing mechanism (not shown in the figure, an existing electric clamp can be selected) provided at the lower end of the lower cross plate. After the fixing is completed, the lower end of the air inlet pipe 414 extends into the housing.

[0039] Subsequently, start the external motor fixedly installed on the second slide rail 421 to drive the bidirectional screw 422 to rotate, so that the support arms 423 on both sides approach the left and right sides of the housing synchronously. When the sealing plates 611 on both sides are in contact with the left and right sides of the housing, the external motor can be stopped. At this time, the rubber bumps 612 on the sealing plates 611 are just inside the housing.

[0040] Please refer to Figure 1 and Figure 3 As shown in FIGS. and, the inclined connecting part 51 includes a first sleeve 511, a first sliding rod 512 and a locking hole 513. The first sleeves 511 hinged through support seats are symmetrically arranged on the left and right of the lower cross plate on the support frame 413. The upper end surfaces of the support arms 423 are hinged through support seats with first sliding rods 512 located in the corresponding first sleeves 511. The first sliding rods 512 are slidably connected to the corresponding first sleeves 511. A first spring is fixedly installed between the first sleeves 511 and the support seats on the corresponding first sliding rods 512. Two locking holes 513 are commonly formed through the first sliding rods 512 and the corresponding first sleeves 511 and are distributed up and down.

[0041] Please refer to Figure 1 and Figure 3 As shown in FIGS. and, the horizontal connecting part 52 includes a second sleeve 521 and a second sliding rod 522. The right end surface of the left support arm 423 is fixedly installed with a second sleeve 521 located between the base 1 and the limit seat 2. The left end surface of the right support arm 423 is fixedly installed with a second sliding rod 522 located in the second sleeve 521. The second sliding rod 522 is slidably connected to the second sleeve 521. Two locking holes 513 are also commonly formed through the second sleeve 521 and the second sliding rod 522 and are distributed left and right.

[0042] Please refer to Figure 1 、 Figure 2 and Figure 3, the locking part 53 includes a first electric push rod 531, a connecting cross plate 532, a triangular plate 533, a T-shaped frame 534 and a locking rod 535. The rear end face of the support column 3 is fixedly installed with a first electric push rod 531 through a C-shaped bracket provided. The telescopic end of the first electric push rod 531 is fixedly installed with a connecting cross plate 532 located behind the support column 3. The front end face of the connecting cross plate 532 is fixedly installed with a triangular plate 533 located in front of the support column 3 through a support rod provided. The front end face of the triangular plate 533 is fixedly installed with a T-shaped frame 534 at its diagonal corner. The front end face of the T-shaped frame 534 is fixedly installed with a locking rod 535 corresponding to the lock holes 513 one by one.

[0043] During specific operation, during the process of the sealing plates 611 on both sides fitting with the left and right sides of the housing, the supporting arms 423 on both sides approach synchronously, and the distance between the supporting arms 423 and the support frame 413 also gradually decreases, so that the first sliding rod 512 continuously extends into the corresponding first sleeve 511. When the supporting arms 423 stop moving, the two lock holes 513 jointly opened on the first sleeve 511 and the first sliding rod 512 are just aligned. At the same time, the supporting arms 423 on both sides approach synchronously, causing the second sliding rod 522 to extend into the second sleeve 521, and when the supporting arms 423 stop moving, the two lock holes 513 jointly opened on the second sleeve 521 and the second sliding rod 522 are also just aligned.

[0044] Subsequently, start the first electric push rod 531 to push the connecting cross plate 532 forward, so that the locking rod 535 is inserted into the corresponding lock hole 513 through the triangular plate 533 and the T-shaped frame 534, thereby locking the first sleeve 511 and the first sliding rod 512, and locking the second sleeve 521 and the second sliding rod 522. At this time, the first sleeves 511 on both sides and the second sleeve 521 below form a triangular connection structure. In this way, before pressurizing the inside of the turbocharger housing, the triangular connection is used to lock the sealing plates 611 on the left and right sides of the housing and the support frame 413 at the upper end, so as to form an integral external seal during the detection process, thereby improving the rigidity and stability of the entire sealing system and ensuring the uniform distribution of the sealing pressure.

[0045] Please refer to Figure 5 and Figure 6, the limiting part 62 includes a limiting rod 621, a ejector rod 622 and a second electric push rod 623. A plurality of limiting holes are penetrated through the outer wall of the outer ring of the alignment insertion cylinder 614 in a circumferential array manner. A mating hole corresponding to the limiting hole one by one is penetrated through the outer wall of the outer ring of the alignment cylinder 613. The limiting rod 621 is slidably installed in the limiting hole. Both ends of the limiting rod 621 are rounded. A second spring is fixedly installed between the limiting rod 621 and the limiting hole. An ejector rod 622 is slidably installed in the alignment insertion cylinder 614. The ejector rod 622 is composed of a cone at the left end and a cylinder at the right end. A second electric push rod 623 is fixedly installed in the sealing plate 611 on the right side. The telescopic end of the second electric push rod 623 is fixedly connected to the ejector rod 622.

[0046] During specific operation, during the process of the sealing plates 611 on both sides fitting with the left and right sides of the housing, the alignment insertion cylinder 614 will gradually insert into the alignment cylinder 613. When the sealing plates 611 on both sides fit with the housing, the limiting holes on the alignment insertion cylinder 614 will be aligned with the mating holes. Subsequently, the second electric push rod 623 is started to push the ejector rod 622 to the left by its telescopic end. The cone at the left end of the ejector rod 622 will extrude the limiting rod 621 outwards, so that the limiting rod 621 compresses the second spring and passes through the limiting hole and inserts into the mating hole, thereby locking the alignment insertion cylinder 614 and the alignment cylinder 613, and thus locking the sealing plates 611 on both sides again from the inside of the turbocharger housing, making the sealing plates 611 contact the housing more tightly, reducing the tiny gap and improving the airtightness.

[0047] Please refer to Figure 5 and Figure 7 , the expansion sealing part 63 includes a slip ring 631, a first connecting rod 632 and an arc-shaped abutting block 633. The slip ring 631 is slidably installed on the outer wall of the outer ring of the alignment insertion cylinder 614. A third spring sleeved on the alignment insertion cylinder 614 is fixedly installed between the slip ring 631 and the corresponding sealing plate 611. A plurality of first connecting rods 632 are hinged to the outer wall of the slip ring 631 in a circumferential array manner through the provided torsion spring rods. The arc-shaped abutting block 633 that fits with the corresponding rubber bump 612 is fixedly installed at the end of the first connecting rod 632 away from the slip ring 631.

[0048] Please refer to Figure 5 and Figure 8 , the matching part 64 includes a circular sliding plate 641, a groove 642 and a second connecting rod 643. The circular sliding plate 641 is slidably installed in the alignment cylinder 613. A fourth spring is fixedly installed between the circular sliding plate 641 and the corresponding sealing plate 611. A plurality of grooves 642 are penetrated through the outer wall of the outer ring of the alignment cylinder 613 in a circumferential array manner. The second connecting rods 643 corresponding to the grooves 642 are hinged to the outer wall of the circular sliding plate 641 through the provided torsion spring rods. The arc-shaped abutting block 633 that fits with the corresponding rubber bump 612 is also fixedly installed at the end of the second connecting rod 643 away from the circular sliding plate 641.

[0049] During specific operation, when the sealing plates 611 on both sides are being attached to the left and right sides of the housing, the right end of the alignment cylinder 613 will push the slip ring 631 to the right, causing the slip ring 631 to compress the third spring to the right. The distance between the slip ring 631 and the right sealing plate 611 decreases. At this time, the first connecting rod 632 will expand outward through the arc-shaped abutting block 633 and push the corresponding rubber bump 612, so that the rubber bump 612 on the right side is closely attached to the inner surface of the housing.

[0050] Meanwhile, the left end of the alignment insertion cylinder 614 pushes the circular slide plate 641 to the left to compress the fourth spring. The distance between the circular slide plate 641 and the sealing plate 611 decreases, causing the second connecting rod 643 to expand outward through the arc-shaped abutting block 633 and push the corresponding rubber bump 612, so that the rubber bump 612 on the left side is closely attached to the inner surface of the housing. In this way, during the alignment process, the rubber bump 612 is extruded outward through internal expansion, making the rubber bump 612 closely attached to the inner surface of the turbocharger housing, providing a fixed support point for the rubber bump 612 to form a stable sealing state. In this way, during high-pressure or long-term tests, the rubber bump 612 can still maintain stable sealing performance.

[0051] Subsequently, start the external air pump to supply air to the inside of the turbocharger housing through the air inlet pipe 414 to increase the air pressure inside the turbocharger housing. When the injected air pressure reaches a certain value, stop the operation of the external air pump and wait for a certain period of time to observe the change in the value on the gas pressure gauge 615 to determine whether the sealing performance of the housing is qualified.

[0052] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automobile supercharger assembly air tightness detection device, comprising a base, characterized in that: A limiting seat for supporting and limiting the turbocharger housing is fixedly installed on the upper end surface of the base, a support column located behind the limiting seat is fixedly installed on the upper end surface of the base, a positioning mechanism is arranged on the support column, and a sealing mechanism cooperating therewith is arranged on the positioning mechanism; The alignment mechanism includes an air intake portion arranged on the support column and used for sealing and fixing the upper end of the shell and injecting air into the interior thereof, and a side alignment portion is arranged on the support column and used for synchronously approaching the sealing mechanism to the left and right sides of the shell; The sealing mechanism includes an actuator disposed on the side facing portion and used to cooperate with the actuator to synchronously seal the left and right sides of the shell, a limiting portion is disposed on the side facing portion for internally supporting and fixing the actuator during the sealing process of the actuator, and an expansion and sealing portion and a matching portion are disposed on the actuator for cooperating with the side facing portion to expand internally so that the actuator fits the left and right sides of the shell interior; The alignment mechanism is provided with a supporting mechanism that cooperates with it; the supporting mechanism includes an oblique connecting portion provided on the air inlet portion and used to implement oblique support for the air inlet portion and the side facing portion, a transverse connecting portion provided on the side facing portion for implementing transverse support thereon, and a locking portion provided on the support column for locking the oblique connecting portion and the transverse connecting portion, and the supporting mechanism ensures the sealed connection between the execution portion and the air inlet portion and the housing through triangular locking; The air intake part includes a cylinder and a first slide rail, the front end surface of the support column is fixedly mounted with the cylinder through a support plate, and the front end surface of the support column is fixedly mounted with a first slide rail located below the support plate; The side facing part includes a second slide rail, a bidirectional screw and a support arm, the front end surface of the support column is fixedly installed with a second slide rail located below the first slide rail, a bidirectional screw is installed through the second slide rail through a bearing, and a support arm that is symmetrical on the left and right and threadedly connected to the bidirectional screw is slidably installed on the front end surface of the second slide rail, and the symmetrical support arms are respectively located on the left and right sides of the limit seat; The execution part comprises a sealing plate and a rubber bump. The sealing plate is fixedly mounted on one side wall of the front ends of the support arms close to each other, and the rubber bump is fixedly mounted on one side wall of the sealing plates close to each other.

2. The air tightness testing device for an automobile supercharger assembly according to claim 1, characterized in that: The air intake part also includes a support frame and an air intake pipe. The support frame is slidably installed on the front end surface of the first slide rail. The support frame consists of an upper cross plate, a middle support rod and a lower cross plate. The upper cross plate is fixedly connected to the telescopic end of the cylinder, and the air intake pipe is fixedly installed through the lower cross plate.

3. The air tightness testing device for an automobile supercharger assembly according to claim 2, characterized in that: The oblique connection portion includes a first sleeve, a first slide bar and a locking hole. The lower end horizontal plate on the support frame is symmetrically provided with a first sleeve hinged through a support seat. The upper end surface of the support arm is hinged with a first slide bar located in the corresponding first sleeve through the support seat. The first slide bar is slidably connected to the corresponding first sleeve. A first spring is fixedly installed between the first sleeve and the support seat on the corresponding first slide bar. The first slide bar and the corresponding first sleeve are jointly penetrated by two locking holes distributed up and down.

4. The air tightness testing device for an automobile supercharger assembly according to claim 3, characterized in that: The horizontal connecting part includes a second sleeve and a second sliding rod. A second sleeve located between the base and the limit seat is fixedly installed on the right end face of the support arm on the left side. A second sliding rod located inside the second sleeve is fixedly installed on the left end face of the support arm on the right side. The second sliding rod is slidably connected to the second sleeve. Two locking holes distributed left and right are also jointly provided on the second sleeve and the second sliding rod.

5. The air tightness testing device for automobile supercharger components according to claim 3 is characterized in that: The locking part includes a first electric push rod, a connecting cross plate, a triangular plate, a T-shaped frame and a locking rod. A first electric push rod is fixedly installed on the rear end face of the support column through a C-shaped bracket provided. The telescopic end of the first electric push rod is fixedly installed with a connecting cross plate located behind the support column. A triangular plate located in front of the support column is fixedly installed on the front end face of the connecting cross plate through a support rod provided. A T-shaped frame located at its diagonal is fixedly installed on the front end face of the triangular plate. A locking rod corresponding to the locking hole one by one is fixedly installed on the front end face of the T-shaped frame.

6. The air tightness testing device for automobile supercharger components according to claim 1, characterized in that: The execution part further includes an alignment cylinder, an alignment insertion cylinder and a gas pressure gauge. An alignment cylinder is fixedly installed at the center of the right end face of the sealing plate on the left side. An alignment insertion cylinder located inside the alignment cylinder is fixedly installed at the center of the left end face of the sealing plate on the right side. The alignment cylinder is slidably connected to the alignment insertion cylinder. A gas pressure gauge is fixedly installed on the support arm on the left side.

7. The air tightness testing device for automobile supercharger assembly according to claim 6, characterized in that: The limiting part includes a limiting rod, a top rod and a second electric push rod. A plurality of limiting holes are penetrated through the outer wall of the alignment insertion cylinder in a circumferential array manner. A matching hole corresponding to the limiting hole one by one is penetrated through the outer wall of the alignment cylinder. A limiting rod is slidably installed in the limiting hole. Both ends of the limiting rod are rounded. A second spring is fixedly installed between the limiting rod and the limiting hole. A top rod is slidably installed in the alignment insertion cylinder. The top rod is composed of a cone at the left end and a cylinder at the right end. A second electric push rod is fixedly installed in the sealing plate on the right side. The telescopic end of the second electric push rod is fixedly connected to the top rod.

8. The air tightness testing device for automobile supercharger components according to claim 6, characterized in that: The expansion and sealing part includes a sliding ring, a first connecting rod and an arc-shaped abutting block. A sliding ring is slidably installed on the outer wall of the alignment insertion cylinder. A third spring sleeved on the alignment insertion cylinder is fixedly installed between the sliding ring and the corresponding sealing plate. A plurality of first connecting rods are hinged on the outer wall of the sliding ring in a circumferential array manner through torsion spring rods provided. An arc-shaped abutting block that fits with the corresponding rubber bump is fixedly installed at the end of the first connecting rod away from the sliding ring.

9. The air tightness testing device for automobile supercharger components according to claim 8, characterized in that: The matching part includes a circular sliding plate, a groove and a second connecting rod. A circular sliding plate is slidably installed in the alignment cylinder. A fourth spring is fixedly installed between the circular sliding plate and the corresponding sealing plate. A plurality of grooves are penetrated through the outer wall of the alignment cylinder in a circumferential array manner. A second connecting rod corresponding to the groove one by one is hinged on the outer wall of the circular sliding plate through a torsion spring rod provided. An arc-shaped abutting block that fits with the corresponding rubber bump is also fixedly installed at the end of the second connecting rod away from the circular sliding plate.

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