Diesel engine cooling jacket pressure maintaining test device

Abstract

The utility model relates to test equipment technical field, especially diesel engine cooling jacket pressure -maintaining test device, including casing and circular bearing plate, the circular bearing plate installs inside the casing, the centre of circular bearing plate is equipped with round groove, the inside installation of round groove rotates the revolving stage, the utility model discloses the synergic cooperation of power movement subassembly and fixed component, with the help of visual sensor real -time detection engine position and linkage servo motor adjustment water jacket interface space positioning, solve the problem of sealing failure because of the alignment deviation, utilize pressure sensor monitoring clamping pressure and linkage electric push rod dynamic adaptation engine clamping, avoid overpressure damage or fixed instability, through revolving stage locking sensor real -time monitoring revolving stage state, realize the closed -loop control to rotation positioning accuracy, realize accurate butt joint, adaptive clamping and positioning monitoring triple function, guarantee test sealing property and operating safety.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, and in particular to a diesel engine cooling water jacket pressure holding test device. Background Technology

[0002] With the continuous improvement of intelligent manufacturing in the automotive industry, diesel engine testing is moving towards automation and precision. Modern engine manufacturing processes place higher demands on the accuracy and efficiency of water jacket pressure testing. The testing process requires automatic engine positioning, intelligent clamping, and precise interface docking.

[0003] In existing water jacket pressure holding tests for large and medium-sized diesel engines such as the WD615 series or 6HK1 model, the cylinder block water jacket holes are deep and the interface plane dimensions are large. During manual hoisting and positioning, offsets of several centimeters are easily generated, leading to misalignment and compression of the sealing ring and water jacket opening, resulting in premature wear and leakage. At the same time, the dimensional tolerances of the engine casting housing make it difficult to fit rigid fixtures. Uneven clamping force may cause local deformation of the aluminum alloy material of the 6HK1 engine, and may also cause the WD615 engine to shift due to vibration during the pressure holding test. Due to its large inertia, the heavy-duty rotary table has positioning deviations when switching to the test station, causing the water jacket interface to not coincide with the engine axis. Manual repeated adjustments are required, and each correction takes several minutes, which seriously restricts the production line cycle and test consistency. Therefore, it is necessary to propose a new diesel engine cooling water jacket pressure holding test device. Utility Model Content

[0004] The purpose of this invention is to provide a diesel engine cooling water jacket pressure holding test device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A diesel engine cooling water jacket pressure holding test device includes a housing and a circular support plate. The circular support plate is installed inside the housing, and a circular groove is formed in the center of the circular support plate. A rotating turntable is installed inside the circular groove. A fixing component for fixing and positioning the diesel engine is installed on the top of the rotating turntable. A power moving component for providing power is symmetrically installed on the top of the circular support plate, and one end of the power moving component extends to the top of the rotating turntable.

[0006] Furthermore, the fixing assembly includes an electric push rod, an arc-shaped clamp, and a spring damper. The electric push rod is symmetrically mounted laterally on the top of the rotary table, and the top of the rotary table is symmetrically mounted with fixing plates.

[0007] Furthermore, the fixed ends of the electric push rods are all connected to the inner side of the fixed plate, the piston ends of the electric push rods are all connected to the outer side of the arc-shaped clamping plate, the outer side of the arc-shaped clamping plate is all in contact with the outer side of the diesel engine, and the spring dampers are symmetrically installed laterally between the fixed plate and the arc-shaped clamping plate.

[0008] Furthermore, the power movement assembly includes guide rails, couplings, and ball screws. The guide rails are all mounted on the top of the circular support plate and extend to the top of the rotary table. Servo motors are installed inside the guide rails. The output end of the servo motor is connected to one end of the coupling. The end of the coupling away from the servo motor is connected to one end of the ball screw. A sleeve is installed on the surface of the rolling nut of the ball screw.

[0009] Furthermore, the power moving assembly also includes an electric slide, a vertical plate is vertically mounted on the surface of the sleeve block, an elongated groove is formed inside the vertical plate, an electric slide is installed inside the elongated groove, a horizontal shaft is mounted on the slider surface of the electric slide, and a water jacket interface is connected to the bottom of the horizontal shaft.

[0010] Furthermore, a controller is installed on the top of the housing, a laser displacement sensor is installed on the top of the vertical plate, pressure sensors are installed on the sides of the arc-shaped clamp and the water jacket interface, and a rotary table locking sensor and a vision sensor are installed on the top of the circular support plate.

[0011] Furthermore, the controller is electrically connected to the laser displacement sensor, pressure sensor, rotary table locking sensor and vision sensor respectively, and the controller is also electrically connected to the servo motor, electric push rod and electric slide table respectively.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention solves the sealing failure problem caused by alignment deviation by using a visual sensor to detect the engine position in real time and linking a servo motor to adjust the spatial positioning of the water jacket interface through the coordinated operation of the power moving component and the fixed component. It also uses a pressure sensor to monitor the clamping pressure and link an electric push rod to dynamically adapt to the engine clamping, avoiding overpressure damage or unstable fixation. The rotary table locking sensor monitors the rotary table status in real time, realizing closed-loop control of the rotation positioning accuracy. This invention achieves three functions: precise docking, adaptive clamping, and positioning monitoring, ensuring the sealing performance and operational safety of the test. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a partial cross-sectional view of the present invention. Figure 3 This is a schematic diagram of the circular support plate structure in this utility model; Figure 4 This is a schematic diagram of the power movement component structure in this utility model.

[0014] In the diagram: 1. Housing; 2. Circular bearing plate; 3. Circular groove; 4. Rotary turntable; 5. Electric push rod; 6. Arc-shaped clamp; 7. Spring damper; 8. Fixed plate; 9. Guide rail; 10. Coupling; 11. Ball screw; 12. Sleeve block; 13. Electric slide table; 14. Vertical plate; 15. Long groove; 16. Horizontal shaft; 17. Water jacket interface; 18. Controller; 19. Laser displacement sensor; 20. Pressure sensor; 21. Rotary table locking sensor; 22. Vision sensor; 23. Servo motor. Detailed Implementation

[0015] 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, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please refer to the following: Figures 1-4 As shown, this utility model provides a technical solution: a diesel engine cooling water jacket pressure holding test device, including a housing 1 and a circular support plate 2. The circular support plate 2 is installed inside the housing 1. The housing 1 provides external protection and a mounting base for the entire device, protecting the internal components from external environmental influences and supporting the installation of other components. A circular groove 3 is provided in the center of the circular support plate 2. A rotating turntable 4 is installed inside the circular groove 3. The circular support plate 2 is used to install the rotating turntable 4, the power moving component, and various sensors, providing a stable mounting platform for these components. The circular groove 3 provides installation space for the rotating turntable 4, enabling the rotating turntable 4 to be stably installed on the circular support plate 2 and to achieve rotation. The rotating turntable 4 can drive the diesel engine and fixed components on the top to rotate, realizing the switching of the engine between different work positions.

[0017] The top of the rotary table 4 is equipped with a fixing assembly for fixing and positioning the diesel engine. The fixing assembly includes an electric push rod 5, an arc-shaped clamp 6, and a spring damper 7. The electric push rod 5 is symmetrically installed on the top of the rotary table 4. The electric push rod 5 pushes the arc-shaped clamp 6 to move through its extension and retraction action, so that the arc-shaped clamp 6 can fit against the outside of the diesel engine to achieve fixation. Under the push of the electric push rod 5, the arc-shaped clamp 6 fits against the outside of the diesel engine, clamping and fixing the diesel engine to prevent it from moving. The top of the rotary table 4 is symmetrically equipped with a fixing plate 8, which provides stable installation support for the electric push rod 5.

[0018] The fixed ends of the electric push rods 5 are all connected to the inner side of the fixed plate 8, and the piston ends of the electric push rods 5 are all connected to the outer side of the arc-shaped clamping plate 6. The outer side of the arc-shaped clamping plate 6 is in contact with the outer side of the diesel engine. The spring dampers 7 are symmetrically installed laterally between the fixed plate 8 and the arc-shaped clamping plate 6. The spring dampers 7 play a buffering role when the arc-shaped clamping plate 6 clamps the engine to avoid excessive clamping force from damaging the engine.

[0019] Symmetrically mounted on the top of the circular support plate 2 are power-moving components for providing power. One end of each power-moving component extends to the top of the rotary table 4. Each power-moving component includes guide rails 9, couplings 10, and ball screws 11. The guide rails 9 are all mounted on the top of the circular support plate 2 and extend to the top of the rotary table 4. The guide rails 9 provide movement guidance for the sleeve block 12 and vertical plate 14 within the power-moving component, ensuring stable movement along a set direction. Servo motors 23 are installed inside each guide rail 9, and the servo motors 23 output... One end of the coupling 10 is connected to the other end of the ball screw 11. The servo motor 23 provides rotational power to the ball screw 11, driving the ball screw 11 to rotate. The end of the coupling 10 away from the servo motor 23 is connected to the other end of the ball screw 11. The coupling 10 transmits the rotational power of the servo motor 23 to the ball screw 11 and compensates for installation errors. A sleeve block 12 is installed on the surface of the rolling nut of the ball screw 11. The sleeve block 12 is installed on the surface of the rolling nut of the ball screw 11 and moves linearly with the rolling nut, driving the vertical plate 14 to move.

[0020] The power movement assembly also includes an electric slide 13. The slider of the electric slide 13 can drive the horizontal shaft 16 and the water jacket interface 17 to move vertically. The height of the water jacket interface 17 can be adjusted. A vertical plate 14 is vertically mounted on the surface of the sleeve block 12. The vertical plate 14 is used to install the electric slide 13 and the laser displacement sensor 19, providing a mounting carrier for the electric slide 13 and supporting the laser displacement sensor 19. A long slot 15 is opened inside the vertical plate 14, providing installation space for the electric slide 13, so that the electric slide 13 can be stably installed inside the vertical plate 14 and the slider can move. The electric slide 13 is installed inside the long slot 15. The horizontal shaft 16 is mounted on the surface of the slider of the electric slide 13. The horizontal shaft 16 transmits the movement of the slider of the electric slide 13 to the water jacket interface 17, driving the water jacket interface 17 to move. The bottom of the horizontal shaft 16 is connected to the water jacket interface 17. Under the drive of the power movement assembly, the water jacket interface 17 docks with the water jacket of the diesel engine to achieve sealing of the water jacket, which facilitates subsequent pressure holding tests.

[0021] A controller 18 is installed on the top of the housing 1, and a laser displacement sensor 19 is installed on the top of the vertical plate 14. The laser displacement sensor 19 detects the position information of the vertical plate 14 and the water jacket interface 17 and transmits the information to the controller 18. Pressure sensors 20 are installed on the sides of the arc-shaped clamping plate 6 and the water jacket interface 17, respectively. The pressure sensors 20 detect the clamping pressure of the arc-shaped clamping plate 6 on the engine and the sealing pressure of the water jacket interface 17 and transmit the pressure information to the controller 18. A rotary table locking sensor 21 and a vision sensor 22 are installed on the top of the circular support plate 2. The rotary table locking sensor 21 detects whether the rotary table 4 has rotated into place and locked, and transmits the locking signal to the controller 18. The vision sensor 22 collects the position and status information of the diesel engine on the rotary table 4 and transmits the information to the controller 18.

[0022] The controller 18 is electrically connected to the laser displacement sensor 19, the pressure sensor 20, the rotary table locking sensor 21 and the vision sensor 22 respectively. The controller 18 is also electrically connected to the servo motor 23, the electric push rod 5 and the electric slide 13 respectively.

[0023] The diesel engine is placed on the rotary table 4. The vision sensor 22 transmits the position information to the controller 18. The controller 18 controls the rotary table 4 to rotate to the test position. After the rotary table locking sensor 21 detects the locking signal, the rotary table 4 stops. The controller 18 drives the electric push rod 5 to push the arc-shaped clamp 6 to clamp the engine. After the pressure sensor 20 reports that the pressure has reached the standard, the electric push rod 5 stops, and the spring damper 7 provides synchronous buffering.

[0024] The controller 18 starts the servo motor 23, which drives the ball screw 11 to rotate via the coupling 10, causing the sleeve block 12 to move along the guide rail 9, which in turn moves the vertical plate 14 and the water jacket interface 17 closer to the engine. The laser displacement sensor 19 assists in positioning, and the electric slide table 13 adjusts the height of the water jacket interface 17 to achieve precise docking. After the sealing pressure of the water jacket interface 17 reaches the standard, the pressure holding test begins. The pressure sensor 20 monitors the status. After the test is completed, the controller 18 controls each component to reset in sequence, and the rotary table 4 rotates to the unloading station.

[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. It should be noted that for those skilled in the art, any changes, modifications or additions without departing from the concept of the present utility model should fall within the protection scope of the present utility model.

Claims

1. A diesel engine cooling water jacket pressure holding test device, characterized in that: The device includes a housing (1) and a circular support plate (2), characterized in that: the circular support plate (2) is installed inside the housing (1), and a circular groove (3) is provided in the center of the circular support plate (2), and a rotating turntable (4) is installed inside the circular groove (3); The top of the rotary table (4) is equipped with a fixing component for fixing and positioning the diesel engine. The top of the circular support plate (2) is symmetrically equipped with a power moving component for providing power, one end of which extends to the top of the rotary table (4).

2. The diesel engine cooling water jacket pressure holding test device according to claim 1, characterized in that: The fixing assembly includes an electric push rod (5), an arc-shaped clamp (6), and a spring damper (7). The electric push rod (5) is symmetrically mounted laterally on the top of the rotary table (4), and a fixing plate (8) is symmetrically mounted on the top of the rotary table (4).

3. The diesel engine cooling water jacket pressure holding test device according to claim 2, characterized in that: The fixed ends of the electric push rods (5) are all connected to the inner side of the fixed plate (8), the piston ends of the electric push rods (5) are all connected to the outer side of the arc-shaped clamp (6), the outer side of the arc-shaped clamp (6) is all in contact with the outer side of the diesel engine, and the spring dampers (7) are symmetrically installed laterally between the fixed plate (8) and the arc-shaped clamp (6).

4. The diesel engine cooling water jacket pressure holding test device according to claim 3, characterized in that: The power moving assembly includes a guide rail (9), a coupling (10), and a ball screw (11). The guide rail (9) is mounted on the top of the circular support plate (2) and extends to the top of the rotary table (4). A servo motor (23) is installed inside the guide rail (9). The output end of the servo motor (23) is connected to one end of the coupling (10). The end of the coupling (10) away from the servo motor (23) is connected to one end of the ball screw (11). A sleeve block (12) is installed on the surface of the rolling nut of the ball screw (11).

5. The diesel engine cooling water jacket pressure holding test device according to claim 4, characterized in that: The power moving assembly also includes an electric slide (13), a vertical plate (14) is vertically mounted on the surface of the sleeve block (12), a long groove (15) is opened inside the vertical plate (14), the electric slide (13) is installed inside the long groove (15), a horizontal shaft (16) is mounted on the slider surface of the electric slide (13), and a water jacket interface (17) is connected to the bottom of the horizontal shaft (16).

6. The diesel engine cooling water jacket pressure holding test device according to claim 5, characterized in that: A controller (18) is installed on the top of the housing (1), a laser displacement sensor (19) is installed on the top of the vertical plate (14), a pressure sensor (20) is installed on the side of the arc-shaped clamp (6) and the water jacket interface (17), and a rotary table locking sensor (21) and a vision sensor (22) are installed on the top of the circular support plate (2).

7. The diesel engine cooling water jacket pressure holding test device according to claim 6, characterized in that: The controller (18) is electrically connected to the laser displacement sensor (19), pressure sensor (20), rotary table locking sensor (21) and vision sensor (22), respectively. The controller (18) is also electrically connected to the servo motor (23), electric push rod (5) and electric slide (13), respectively.

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