An EGR condenser leakage test device

Abstract

The present invention relates to the technical field of condenser testing, and discloses an EGR condenser leakage testing device, including a frame, a mounting plate fixedly connected to the top surface of the frame, a gas storage device arranged behind the mounting plate, a gas charging mechanism arranged at the rear of the top of the mounting plate, the gas storage device and the gas charging mechanism connected through an air pipe, a second placement rack arranged at the middle of the top of the mounting plate, a first blocking mechanism arranged in front of the second placement rack, a pressing mechanism arranged on both sides of the second placement rack, a third blocking mechanism arranged at the side of the top of the mounting plate, and an identification mechanism arranged between the third blocking mechanism and the pressing mechanism. In the present invention, the first blocking block, the second blocking block and the third blocking block are used to make the interior of the EGR condenser a closed space, thereby improving the problem that the traditional EGR condenser leakage test often adopts the submersion method, which makes it difficult for operators to find, thus causing missed detection.

Description

Technical Field

[0001] The invention relates to the technical field of condenser testing, in particular to an EGR condenser leakage testing device. Background Art

[0002] The EGR (exhaust gas recirculation) condenser is an important component in the automobile engine system. In terms of function, it is mainly used to cool the exhaust gas that passes through the exhaust gas recirculation system. During the operation of the engine, part of the exhaust gas will be reintroduced into the combustion chamber through the EGR system. The temperature of these exhaust gases is relatively high, and the function of the EGR condenser is to reduce the temperature of the exhaust gas. This is because high-temperature exhaust gas directly entering the combustion chamber will have an adverse effect on the combustion process, such as causing engine knocking and reducing combustion efficiency. By cooling the exhaust gas, the combustion process can be made more stable and efficient. Structurally, it usually has materials and structures with good heat exchange performance. The interior generally contains a series of complex pipes or heat sinks. When the high-temperature exhaust gas passes through these pipes, the heat can be effectively transferred to the surrounding environment or the cooling medium. The cooling medium may be air or a special coolant. During operation, the heat of the exhaust gas is transferred to the cooling medium, so that the exhaust gas temperature drops, achieving the purpose of cooling. In addition, the design of the EGR condenser also needs to consider its durability and corrosion resistance, because it has to be in contact with high-temperature and impurity-containing exhaust gas for a long time.

[0003] Traditional EGR condenser leak testing often uses the water immersion method. Since smaller leaks will produce smaller bubbles, it will be difficult for operators to find them, resulting in missed detection problems. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides an EGR condenser leakage testing device, which solves the problem that the traditional EGR condenser leakage test often adopts the submersion method. Since smaller leaks will produce smaller bubbles, it will be difficult for operators to find them, thus causing missed detection.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: an EGR condenser leakage testing device, comprising a frame, a mounting plate is fixedly connected to the top surface of the frame, a gas storage device is arranged behind the mounting plate, an air charging mechanism is arranged at the rear position of the top of the mounting plate, the air storage device and the air charging mechanism are connected through an air supply pipe, a second placement rack is arranged at the middle position of the top of the mounting plate, a first blocking mechanism is arranged in front of the second placement rack, pressing mechanisms are arranged on both sides of the second placement rack, a third blocking mechanism is arranged at the edge position of the top of the mounting plate, an identification mechanism is arranged between the third blocking mechanism and the pressing mechanism, a second blocking mechanism is arranged on the right side of the first blocking mechanism, the first blocking mechanism, the second blocking mechanism and the third blocking mechanism are used to block the air outlet of the condenser, the pressing mechanism is used to fix the condenser, the second placement rack is used to support the condenser, the air charging mechanism is used to charge gas into the condenser, and the air storage device is used to store gas.

[0006] Preferably, handles are fixedly connected to the four top corners of the mounting plate.

[0007] Preferably, a first placement rack is provided in front of the mounting plate.

[0008] Preferably, the inflation mechanism includes a first bracket, a first hydraulic cylinder is fixedly provided on the upper portion of the first bracket, the bottom of the first bracket is fixedly connected to the top of the mounting plate, the output end of the first hydraulic cylinder is fixedly connected to a first connecting plate, a ventilation valve is fixedly connected to the side of the first connecting plate away from the first hydraulic cylinder, the input end of the ventilation valve is fixedly connected to one end of the air supply pipe, the other end of the air supply pipe is fixedly connected to the output end of the air storage tank, and a pressure gauge is provided on the upper portion of the air storage tank.

[0009] Preferably, the third blocking mechanism includes a second bracket, a second hydraulic cylinder is fixedly provided on the upper part of the second bracket, the bottom of the second bracket is fixedly connected to the top of the mounting plate, the output end of the second hydraulic cylinder is fixedly connected to the second connecting plate, and the side of the second connecting plate away from the second hydraulic cylinder is fixedly connected to the first blocking block.

[0010] Preferably, the identification mechanism comprises a third bracket, the bottom of the third bracket is fixedly connected to the top of the mounting plate, and the upper part of the third bracket is fixedly provided with a camera.

[0011] Preferably, the first blocking mechanism includes a fourth bracket, a third hydraulic cylinder is fixedly provided on the upper portion of the fourth bracket, the bottom of the fourth bracket is fixedly connected to the top of the mounting plate, the output end of the third hydraulic cylinder is fixedly connected to a third connecting plate, and the side of the third connecting plate away from the third hydraulic cylinder is fixedly connected to a second blocking block.

[0012] Preferably, the pressing mechanism includes a first servo motor, the bottom of which is fixedly connected to the top of the mounting plate, the output end of the first servo motor is fixedly set at one end of the first rotating shaft, the other end of the first rotating shaft is fixedly set at one end of the first connecting arm, and the other end of the first connecting arm is connected to a contact plate through a connecting rod.

[0013] Preferably, the second blocking mechanism includes a fifth bracket, a connecting block is fixedly provided on the upper part of the fifth bracket, the bottom of the fifth bracket is fixedly connected to the top of the mounting plate, the outer wall of the connecting block is fixedly connected to the side of the second servo motor away from the output end, the output end of the second servo motor is fixedly provided at one end of the second rotating shaft, the other end of the second rotating shaft is fixedly connected to one end of the second connecting arm, and the other end of the second connecting arm is fixedly provided with a third blocking block.

[0014] Preferably, a start-stop controller is provided at the edge of the frame, a mounting bar is fixedly connected to the top of the frame near the mounting plate, supporting legs and universal wheels are provided at the four bottom corners of the frame, a frame is provided above the frame, a table is provided in the middle of the frame, a human-computer interaction screen and a central processing unit are provided on the top of the table, an alarm device is provided on the top of the frame, three groups of mounting plates and an air storage device are provided on the top of the frame, and the central processing unit is electrically connected to the start-stop controller, the ventilation valve, the first hydraulic cylinder, the air storage tank, the pressure gauge, the second hydraulic cylinder, the camera, the third hydraulic cylinder, the first servo motor, the air storage device, the human-computer interaction screen and the alarm device.

[0015] Working principle: control the second hydraulic cylinder, the first hydraulic cylinder and the third hydraulic cylinder to contract, and then control the first servomotor to output a rotational force, thereby driving the first rotating shaft to rotate, and then driving the first connecting arm to rotate, thereby driving the contact plate to translate, until it translates out of the upper part of the second placement rack, and then pick up the EGR condenser from the upper part of the first placement rack and place it on the upper part of the second placement rack, control the second hydraulic cylinder, the first hydraulic cylinder and the third hydraulic cylinder to push out, thereby connecting the output end of the vent valve to the input port of the EGR condenser, so that the first blocking block and the second blocking block block the air outlet of the upper EGR condenser, control the second servomotor to output a rotational force, thereby driving the second connecting arm to rotate, thereby connecting the third sealing block to the upper part of the EGR condenser. The block is engaged at the air outlet of the EGR condenser, and then the first servo motor is controlled to output a rotational force to drive the contact plate to translate to the upper surface of the EGR condenser through the first connecting arm. The camera then scans the QR code on the surface of the EGR condenser to identify the identity information. The start-stop controller is then pressed to allow the gas storage tank to input gas into the EGR condenser through the gas pipe and the vent valve. The first hydraulic cylinder, the second hydraulic cylinder and the third hydraulic cylinder transmit real-time pressure values ​​to the central processor. When any pressure value of the first hydraulic cylinder, the second hydraulic cylinder and the third hydraulic cylinder to the central processor decreases, it can be determined that the EGR condenser is leaking, and the leakage information is displayed on the human-computer interaction screen.

[0016] The present invention provides an EGR condenser leakage test device, which has the following beneficial effects:

[0017] 1. In the present invention, the interior of the EGR condenser is made into a closed space by blocking the first blocking block, the second blocking block and the third blocking block, so that the gas storage tank delivers gas to the interior of the EGR condenser through the gas pipe and the vent valve, and then the pressure change information fed back to the central processor by the first hydraulic cylinder, the second hydraulic cylinder and the third hydraulic cylinder can be used to determine whether there is a leak, thereby improving the traditional EGR condenser leakage test which often adopts the submersion method. Since smaller leaks will produce smaller bubbles, it will be difficult for operators to find it, resulting in the problem of missed detection.

[0018] 2. In the present invention, by arranging three sets of mounting plates and gas storage devices on the upper part of the frame, leakage tests can be performed on three EGR condensers at the same time, thereby achieving the effect of improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of a partial three-dimensional structure of a frame of the present invention;

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure of the mounting plate of the present invention;

[0021] Figure 3It is a three-dimensional structural schematic diagram of the inflation mechanism and the gas storage device of the present invention;

[0022] Figure 4 It is a schematic diagram of the three-dimensional structure of the third blocking mechanism of the present invention;

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the identification mechanism of the present invention;

[0024] Figure 6 It is a schematic diagram of the three-dimensional structure of the first blocking mechanism of the present invention;

[0025] Figure 7 It is a schematic diagram of the three-dimensional structure of the pressing mechanism of the present invention;

[0026] Figure 8 It is a schematic diagram of the three-dimensional structure of the second blocking mechanism of the present invention;

[0027] Fig. 9 It is a schematic diagram of the front three-dimensional structure of the present invention;

[0028] Fig.10 It is a schematic diagram of the three-dimensional structure of the addition of the present invention.

[0029] Among them, 1. first placement rack; 2. start-stop controller; 3. rack; 4. mounting plate; 5. handle; 6. first blocking mechanism; 7. second blocking mechanism; 8. pressing mechanism; 9. identification mechanism; 10. second placement rack; 11. third blocking mechanism; 12. inflation mechanism; 13. gas pipe; 14. mounting strip; 15. gas storage device; 16. vent valve; 17. first hydraulic cylinder; 18. first bracket; 19. gas tank; 20. pressure gauge; 21. first blocking block; 22. second connecting plate; 23. second hydraulic cylinder; 24. second bracket; 25. The third bracket; 26. The camera; 27. The second blocking block; 28. The third connecting plate; 29. ​​The third hydraulic cylinder; 30. The fourth bracket; 31. The first servo motor; 32. The first rotating shaft; 33. The contact plate; 34. The first connecting arm; 35. The supporting leg; 36. The universal wheel; 37. The frame; 38. The human-computer interaction screen; 39. The central processing unit; 40. The alarm device; 41. The first connecting plate; 42. The second connecting arm; 43. The third blocking block; 44. The second rotating shaft; 45. The second servo motor; 46. The connecting block; 47. The fifth bracket. DETAILED DESCRIPTION

[0030] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Embodiment 1:

[0032] Please see attached Figure 1 -Attached Figure 2 The embodiment of the present invention provides an EGR condenser leakage test device, comprising a frame 3, a mounting plate 4 is fixedly connected to the top surface of the frame 3, a gas storage device 15 is arranged behind the mounting plate 4, a charging mechanism 12 is arranged at the rear position of the top of the mounting plate 4, the gas storage device 15 is connected to the charging mechanism 12 through a gas pipe 13, a second placement rack 10 is arranged at the middle position of the top of the mounting plate 4, a first blocking mechanism 6 is arranged in front of the second placement rack 10, pressing mechanisms 8 are arranged on both sides of the second placement rack 10, a third blocking mechanism 11 is arranged at the edge position of the top of the mounting plate 4, an identification mechanism 9 is arranged between the third blocking mechanism 11 and the pressing mechanism 8, a second blocking mechanism 7 is arranged on the right side of the first blocking mechanism 6, the first blocking mechanism 6, the second blocking mechanism 7 and the third blocking mechanism 11 are used to block the air outlet of the condenser, the pressing mechanism 8 is used to fix the condenser, the second placement rack 10 is used to support the condenser, the charging mechanism 12 is used to charge gas into the condenser, and the gas storage device 15 is used to store gas.

[0033] Specifically, the frame 3 supports and fixes the mounting plate 4, the start-stop controller 2, the mounting bar 14, the support legs 35, the universal wheels 36 and other components, providing a stable structural foundation for the entire EGR condenser leakage test device. The mounting plate 4 can carry the gas storage device 15, the charging mechanism 12, the second placement rack 10 and various plugging, pressing, and identification mechanisms 9 and other components, providing an installation support for the functional components of the EGR condenser leakage test device. The gas storage device 15 can store gas, providing a gas source guarantee for the charging mechanism 12 to charge the gas into the EGR condenser to meet the leakage test requirements. The charging mechanism 12 can use the gas source provided by the gas storage device 15 to accurately charge the condenser according to the test requirements when testing the EGR condenser, so as to assist in completing the leakage detection process. The gas supply provided by the gas storage device 15 can be connected to the gas supply pipe 13. The gas storage device 15 and the charging mechanism 12 are connected to ensure that the gas can be smoothly transmitted from the gas storage device 15 to the charging mechanism 12, thereby providing a channel for charging the EGR condenser. The second placement rack 10 is used to support the condenser during the EGR condenser leakage test to ensure that the condenser is in a suitable position in the test device to cooperate with other mechanisms to complete the test. At the same time, the second placement rack 10 is all provided with a blocking shape to block the downward air vent of the EGR condenser. The first blocking mechanism 6, the third blocking mechanism 11 and the second blocking mechanism 7 can block the air outlet of the EGR condenser. The pressing mechanism 8 can keep the condenser in a stable position during the test to ensure the accuracy of the test. The identification mechanism 9 can capture the QR code on the surface of the EGR condenser to determine the identity information of the EGR condenser.

[0034] Please refer to the attached Figure 1 -Attached Figure 2 The four corners of the top of the mounting plate 4 are fixedly connected with handles 5.

[0035] Specifically, the handle 5 can be used to easily pick up the mounting plate 4, thereby facilitating maintenance of the test device.

[0036] Please refer to the attached Figure 1 A first placement rack 1 is arranged in front of the mounting plate 4.

[0037] Specifically, the first placement rack 1 can be used to temporarily place the EGR condenser to be tested.

[0038] Please refer to the attached Figure 1 -Attached Figure 3The inflation mechanism 12 includes a first bracket 18, a first hydraulic cylinder 17 is fixedly arranged on the upper part of the first bracket 18, the bottom of the first bracket 18 is fixedly connected to the top of the mounting plate 4, the output end of the first hydraulic cylinder 17 is fixedly connected to the first connecting plate 41, the side of the first connecting plate 41 away from the first hydraulic cylinder 17 is fixedly connected to the ventilation valve 16, the input end of the ventilation valve 16 is fixedly connected to one end of the air supply pipe 13, the other end of the air supply pipe 13 is fixedly connected to the output end of the air storage tank 19, and the upper part of the air storage tank 19 is provided with a pressure gauge 20.

[0039] Specifically, the first bracket 18 can fix the first hydraulic cylinder 17 and provide a stable installation position for it, thereby ensuring that the vent valve 16 can work accurately during the inflation operation. The first hydraulic cylinder 17 can drive the first connecting plate 41, thereby driving the vent valve 16 to move, thereby realizing the control operation of inflation of the condenser. The first connecting plate 41 can connect the output end of the first hydraulic cylinder 17 with the vent valve 16, and transmit the power of the hydraulic cylinder to the vent valve 16, so that the vent valve 16 can make corresponding position adjustments. The vent valve 16 can control the flow of gas, and adjust the gas entering the condenser from the gas pipe 13 by opening and closing, ensuring that the inflation process is carried out according to the test requirements. The pressure gauge 20 can monitor the gas pressure in the gas storage tank 19 in real time, provide pressure data reference for the inflation process, and ensure that the pressure of inflation into the condenser is within a reasonable range.

[0040] Please see attached Figure 1 -Attached Figure 4 The third blocking mechanism 11 includes a second bracket 24, a second hydraulic cylinder 23 is fixedly arranged on the upper part of the second bracket 24, the bottom of the second bracket 24 is fixedly connected to the top of the mounting plate 4, the output end of the second hydraulic cylinder 23 is fixedly connected to the second connecting plate 22, and the side of the second connecting plate 22 away from the second hydraulic cylinder 23 is fixedly connected to the first blocking block 21.

[0041] Specifically, the second bracket 24 can fix the second hydraulic cylinder 23, provide a stable support structure for the third blocking mechanism 11, and ensure that the first blocking block 21 is accurately positioned when blocking the air outlet of the condenser. The second hydraulic cylinder 23 can drive the second connecting plate 22 to displace the first blocking block 21. The second connecting plate 22 can connect the second hydraulic cylinder 23 and the first blocking block 21, and transmit the driving force of the hydraulic cylinder to the first blocking block 21. The first blocking block 21 can block the air outlet of the condenser to prevent leakage of the gas filled in the condenser, thereby ensuring stable internal air pressure during testing.

[0042] Please see attached Figure 1 -Attached Figure 5The identification mechanism 9 includes a third bracket 25 , the bottom of the third bracket 25 is fixedly connected to the top of the mounting plate 4 , and a camera 26 is fixedly arranged on the upper part of the third bracket 25 .

[0043] Specifically, the third bracket 25 can support the camera 26, and the camera 26 can capture the QR code on the surface of the EGR condenser, thereby transmitting the captured information to the central processor 39, and further identifying the individual information of the EGR condenser.

[0044] Please see attached Figure 1 -Attached Figure 6 The first blocking mechanism 6 includes a fourth bracket 30, a third hydraulic cylinder 29 is fixedly arranged on the upper part of the fourth bracket 30, the bottom of the fourth bracket 30 is fixedly connected to the top of the mounting plate 4, the output end of the third hydraulic cylinder 29 is fixedly connected to the third connecting plate 28, and the side of the third connecting plate 28 away from the third hydraulic cylinder 29 is fixedly connected to the second blocking block 27.

[0045] Specifically, the fourth bracket 30 can support the third hydraulic cylinder 29, and the third hydraulic cylinder 29 can output thrust. The third connecting plate 28 can connect the third hydraulic cylinder 29 and the second blocking block 27, and the second blocking block 27 can block the condenser outlet.

[0046] Please see attached Figure 1 -Attached Figure 7 The pressing mechanism 8 includes a first servo motor 31, the bottom of which is fixedly connected to the top of the mounting plate 4, the output end of the first servo motor 31 is fixedly arranged at one end of a first rotating shaft 32, the other end of the first rotating shaft 32 is fixedly arranged at one end of a first connecting arm 34, and the other end of the first connecting arm 34 is connected to a contact plate 33 through a connecting rod.

[0047] Specifically, the first servo motor 31 can output rotational force, the first rotating shaft 32 can transmit the rotational force to the first connecting arm 34, the first connecting arm 34 can drive the connecting rod to rotate, and then drive the contact plate 33 to rotate, and the contact plate 33 can clamp the EGR condenser, thereby fixing the EGR condenser.

[0048] Please see attached Figure 1 -Attached Figure 8The second blocking mechanism 7 includes a fifth bracket 47, a connecting block 46 is fixedly provided on the upper part of the fifth bracket 47, the bottom of the fifth bracket 47 is fixedly connected to the top of the mounting plate 4, the outer wall of the connecting block 46 is fixedly connected to the side of the second servo motor 45 away from the output end, the output end of the second servo motor 45 is fixedly provided at one end of the second rotating shaft 44, the other end of the second rotating shaft 44 is fixedly connected to one end of the second connecting arm 42, and the other end of the second connecting arm 42 is fixedly provided with a third blocking block 43.

[0049] Specifically, the fifth bracket 47 can support the connecting block 46, which can connect to the second servo motor 45 through the connecting block 46, output rotational force through the second servo motor 45, drive the second connecting arm 42 to rotate through the second rotating shaft 44, drive the third blocking block 43 to translate through the second connecting arm 42, and block the condenser through the third blocking block 43.

[0050] Please see attached Figure 1 -Attached Fig.10 A start-stop controller 2 is provided at the edge of the frame 3, a mounting bar 14 is fixedly connected to the top of the frame 3 near the mounting plate 4, supporting legs 35 and universal wheels 36 are provided at the four corners of the bottom of the frame 3, a frame 37 is provided above the frame 3, a table is provided in the middle of the frame 37, a human-machine interaction screen 38 and a central processing unit 39 are provided on the top of the table, an alarm device 40 is provided on the top of the frame 37, three groups of mounting plates 4 and an air storage device 15 are provided on the top of the frame 3, and the central processing unit 39 is electrically connected to the start-stop controller 2, the ventilation valve 16, the first hydraulic cylinder 17, the air storage tank 19, the pressure gauge 20, the second hydraulic cylinder 23, the camera 26, the third hydraulic cylinder 29, the first servo motor 31, the air storage device 15, the human-machine interaction screen 38 and the alarm device 40.

[0051] Specifically, the monitoring device can be started and the device can be temporarily shut down through the start-stop controller 2, the protective glass can be installed through the mounting bar 14 to prevent splash damage, the test device can be lifted through the support leg 35, so that the universal wheel 36 is off the ground, thereby stabilizing the test device, the universal wheel 36 can facilitate the movement of the test device, the frame 37 can be used to install related structures, the table can be used to install the human-machine interaction screen 38 and the central processing unit 39, the human-machine interaction screen 38 can be used to see the monitoring status in real time, the central processing unit 39 can be used for overall control, receive and process signals from components such as the pressure gauge 20 and the camera 26, control the actions of various mechanisms according to a preset program, and at the same time determine whether the condenser is leaking and control the alarm device 40, the alarm device 40 can emit sound, light and buzzer in an emergency, so as to promptly remind the operator, and the three groups of mounting plates 4 and the gas storage device 15 provided on the top of the rack 3 can perform multi-station detection, thereby improving the detection efficiency.

[0052] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An EGR condenser leakage test device, comprising a frame (3), characterized in that: The top surface of the frame (3) is fixedly connected to a mounting plate (4), a gas storage device (15) is arranged behind the mounting plate (4), an air charging mechanism (12) is arranged at a rear position of the top of the mounting plate (4), the gas storage device (15) and the air charging mechanism (12) are connected via an air supply pipe (13), a second placement rack (10) is arranged at a middle position on the top of the mounting plate (4), a first blocking mechanism (6) is arranged in front of the second placement rack (10), pressing mechanisms (8) are arranged on both sides of the second placement rack (10), and a second blocking mechanism (6) is arranged at a middle position on the top of the mounting plate (4). A third blocking mechanism (11) is arranged at the edge position, an identification mechanism (9) is arranged between the third blocking mechanism (11) and the pressing mechanism (8), a second blocking mechanism (7) is arranged on the right side of the first blocking mechanism (6), the first blocking mechanism (6), the second blocking mechanism (7) and the third blocking mechanism (11) are used to block the air outlet of the condenser, the pressing mechanism (8) is used to fix the condenser, the second placement rack (10) is used to support the condenser, the charging mechanism (12) is used to charge gas into the condenser, and the gas storage device (15) is used to store gas.

2. The EGR condenser leakage test device according to claim 1, characterized in that: The four corners of the top of the mounting plate (4) are fixedly connected with handles (5).

3. The EGR condenser leakage test device according to claim 1, characterized in that: A first placement rack (1) is arranged in front of the mounting plate (4).

4. The EGR condenser leakage test device according to claim 1, characterized in that: The inflation mechanism (12) comprises a first bracket (18), a first hydraulic cylinder (17) is fixedly arranged on the upper part of the first bracket (18), the bottom of the first bracket (18) is fixedly connected to the top of the mounting plate (4), the output end of the first hydraulic cylinder (17) is fixedly connected to a first connecting plate (41), a side of the first connecting plate (41) away from the first hydraulic cylinder (17) is fixedly connected to a vent valve (16), the input end of the vent valve (16) is fixedly connected to one end of an air supply pipe (13), the other end of the air supply pipe (13) is fixedly connected to the output end of an air storage tank (19), and a pressure gauge (20) is arranged on the upper part of the air storage tank (19).

5. The EGR condenser leakage test device according to claim 1, characterized in that: The third blocking mechanism (11) comprises a second bracket (24), a second hydraulic cylinder (23) is fixedly arranged on the upper part of the second bracket (24), the bottom of the second bracket (24) is fixedly connected to the top of the mounting plate (4), the output end of the second hydraulic cylinder (23) is fixedly connected to a second connecting plate (22), and a first blocking block (21) is fixedly connected to a side of the second connecting plate (22) away from the second hydraulic cylinder (23).

6. The EGR condenser leakage test device according to claim 1, characterized in that: The identification mechanism (9) comprises a third bracket (25), the bottom of the third bracket (25) is fixedly connected to the top of the mounting plate (4), and the upper part of the third bracket (25) is fixedly provided with a camera (26).

7. The EGR condenser leakage test device according to claim 1, characterized in that: The first blocking mechanism (6) comprises a fourth bracket (30), a third hydraulic cylinder (29) is fixedly arranged on the upper part of the fourth bracket (30), the bottom of the fourth bracket (30) is fixedly connected to the top of the mounting plate (4), the output end of the third hydraulic cylinder (29) is fixedly connected to a third connecting plate (28), and the side of the third connecting plate (28) away from the third hydraulic cylinder (29) is fixedly connected to a second blocking block (27).

8. The EGR condenser leakage test device according to claim 1, characterized in that: The pressing mechanism (8) comprises a first servo motor (31), the bottom of the first servo motor (31) is fixedly connected to the top of the mounting plate (4), the output end of the first servo motor (31) is fixedly arranged at one end of a first rotating shaft (32), the other end of the first rotating shaft (32) is fixedly arranged at one end of a first connecting arm (34), and the other end of the first connecting arm (34) is connected to a contact plate (33) via a connecting rod.

9. The EGR condenser leakage test device according to claim 1, characterized in that: The second blocking mechanism (7) comprises a fifth bracket (47), a connecting block (46) is fixedly arranged on the upper part of the fifth bracket (47), the bottom of the fifth bracket (47) is fixedly connected to the top of the mounting plate (4), the outer wall of the connecting block (46) is fixedly connected to the side of the second servo motor (45) away from the output end, the output end of the second servo motor (45) is fixedly arranged on one end of the second rotating shaft (44), the other end of the second rotating shaft (44) is fixedly connected to one end of the second connecting arm (42), and the other end of the second connecting arm (42) is fixedly arranged with a third blocking block (43).

10. The EGR condenser leakage test device according to claim 1, characterized in that: A start-stop controller (2) is arranged at the edge of the frame (3); a mounting strip (14) is fixedly connected to the top of the frame (3) near the mounting plate (4); support legs (35) and universal wheels (36) are arranged at the four corners of the bottom of the frame (3); a frame (37) is arranged above the frame (3); a platform is arranged in the middle of the frame (37); a human-machine interaction screen (38) and a central processing unit (39) are arranged on the top of the platform; and a control panel (38) and a central processing unit (39) are arranged on the top of the frame (37). An alarm device (40) is provided, three groups of mounting plates (4) and an air storage device (15) are arranged on the top of the frame (3), and the central processor (39) is electrically connected to a start-stop controller (2), a vent valve (16), a first hydraulic cylinder (17), an air storage tank (19), a pressure gauge (20), a second hydraulic cylinder (23), a camera (26), a third hydraulic cylinder (29), a first servo motor (31), an air storage device (15), a human-machine interaction screen (38) and an alarm device (40).

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