Connecting rod center distance detection device

Abstract

The utility model relates to the technical field of connecting rod detection, in particular to a connecting rod center distance detection device which comprises a detection table, a fixed seat is installed on the left side of the middle of the top of the detection table, a first pin rod is installed on the fixed seat, and a movable seat is installed on the right side of the middle of the top of the detection table and located on the same straight line with the fixed seat. A second pin rod is installed on the movable seat and located on the same straight line with the first pin rod, and a displacement sensor is installed on the detection table on the right side of the guide rail and abuts against the movable seat. One end of the connecting rod is fixed through the fixed seat, then the other end of the connecting rod is fixed through the movable seat, finally the displacement condition of the movable seat is detected through the displacement sensor, and when the center distances of different connecting rods change, the movable seat can be pushed to generate corresponding displacement. The displacement sensor can detect the displacement to identify the center distance of the connecting rod, and the detection is convenient, simple and high in efficiency.

Description

Technical Field

[0001] This utility model relates to the field of connecting rod detection technology, and specifically to a connecting rod center distance detection device. Background Technology

[0002] A turbocharger is an air compressor that uses the exhaust gas produced by an internal combustion engine to drive a coaxial impeller. The inertial force of the exhaust gas drives a turbine in the turbine housing, which in turn compresses the air supplied by the air filter into the cylinders. As the engine speed increases, the turbocharger no longer needs to utilize all the exhaust gas energy. At this point, a portion of the exhaust gas is discharged to the turbine through a wastegate valve. The wastegate valve is opened and closed by a linkage mechanism, which is driven by an actuator to control its position.

[0003] The center distance of the connecting rod is a crucial standard for determining whether the connecting rod meets processing requirements. It directly affects the degree to which the actuator opens the valve, thus influencing the amount of exhaust gas discharged and ultimately the operation of the turbocharger. During production, random sampling is required to control the product qualification rate. Currently, the control of the connecting rod center distance in production often uses three-dimensional coordinate measurement, but this method is inefficient. Utility Model Content

[0004] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0005] A linkage center distance detection device includes a detection platform. A fixed seat is installed on the left side of the top center of the detection platform, and a pin is installed on the fixed seat. A movable seat is installed on the right side of the top center of the detection platform, aligned with the fixed seat. A guide rail is fixed to the top of the detection platform below the movable seat, and a slider is installed on the guide rail, sliding linearly along the guide rail. The movable seat and the slider are fixedly installed. The top surface of the movable seat is at the same height as the top surface of the fixed seat. A pin is installed on the movable seat, aligned with the pin. A displacement sensor is installed on the detection platform to the right of the guide rail, abutting against the movable seat. A display and control host is installed on the front left side of the top of the detection platform, and the displacement sensor is electrically connected to the display and control host.

[0006] Furthermore, a frame is installed below the testing platform, and the testing platform is fixedly mounted to the frame. A hole is made on the testing platform corresponding to the position of the fixing seat, and the bottom part of the fixing seat extends into the hole. A fixing ring plate is fixed to the outer side of the fixing seat corresponding to the position of the top surface of the testing platform. The fixing ring plate is fixedly mounted to the testing platform. A mounting bracket is fixed to the testing platform on the right side of the guide rail, and the displacement sensor is fixedly mounted to the mounting bracket. The frame, fixing ring plate, and mounting bracket facilitate their respective installation and fixation.

[0007] Furthermore, a connecting rod body is provided between the fixed seat and the movable seat. Connecting rod end rings are fixed to both ends of the connecting rod body, and these end rings are fitted onto corresponding pins one and two. A positioning bolt is fixed on the movable seat at the position corresponding to the displacement sensor, and the detection end of the displacement sensor abuts against the positioning bolt. This connecting rod body is used on turbocharger valves and differs from crankshaft connecting rods and automotive valve connecting rods. The connecting rod has a uniform surface diameter, and the bore diameters at both ends are also equal.

[0008] Furthermore, the top portions of both pin one and pin two are tapered. This tapered structure causes its outer diameter to vary with height, thus adapting to the testing of connecting rods of different specifications.

[0009] Furthermore, the fixed base is hollow, and an inner sleeve that moves up and down within the fixed base is provided. A fixing block 1 is fixed at the bottom of the inner sleeve, and a pin 1 is located inside the inner sleeve. A spring 1 is installed inside the inner sleeve, and both ends of the spring 1 abut against the fixing block 1 and the pin 1 at corresponding positions. The movable base is hollow, and a pin 2 is movably installed inside the movable base. A movable groove is preset on the guide rail corresponding to the position of pin 2. A connecting pipe extending into the movable groove is fixed at the bottom of the movable base corresponding to the position of pin 2. A fixing block 2 is fixed at the bottom of the connecting pipe, and a spring 3 is installed inside the connecting pipe between the fixing block 2 and pin 2. Both ends of the spring 3 abut against the fixing block 2 and pin 2 at corresponding positions. The spring configuration allows pin 1 and pin 2 to move up and down. In application, the diameters of pin 1 and pin 2 can be made larger, and connecting rods with end hole diameters smaller than the pin diameter can be tested to ensure that the pin can accurately position and fix the center of the connecting rod at both ends without being affected by the gap between the pin and the end hole diameter of the connecting rod.

[0010] Furthermore, a base plate is fixed to the bottom of the fixing seat, and a second spring is installed inside the fixing seat between the base plate and the inner sleeve. The two ends of the second spring abut against the base plate and the inner sleeve at corresponding positions. The second spring can push the inner sleeve to move up and down to cooperate with the first pin for adjustment.

[0011] Furthermore, a pressure ring is provided directly above the connecting rod end rings at both ends of the connecting rod body, and a retainer is provided directly above the pressure ring. The retainer and the corresponding pressure ring are fixed together by multiple connecting rods. Multiple threaded rods are installed on the outside of the retainer. Fixing holes are opened at the top of the fixed seat and the movable seat corresponding to the positions of the threaded rods, and the bottom of the threaded rods are threadedly connected to the fixing holes. The pressure ring is used in conjunction with the pin to allow the connecting rod to fit against the surfaces of the fixed seat and the movable seat, ensuring that the slider and the movable seat can be moved due to changes in the center distance.

[0012] Furthermore, an internal gear is mounted on the retainer at a position coaxial with the pressure ring, and three equally spaced external gears are mounted on the retainer corresponding to the outer position of the pressure ring. The external gears mesh with the internal gears, and each of the three external gears has a hole at its center. Threaded rods pass through these holes and are threadedly connected. A hexagonal socket fixed to the internal gears is mounted on the top of the retainer. This configuration of internal and external gears allows the rotation of the hexagonal socket to activate all external gears, thereby driving all threaded rods to rotate, facilitating use.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. This utility model uses a fixed seat to fix one end of the connecting rod, and a movable seat to fix the other end of the connecting rod. Finally, a displacement sensor is used to detect the displacement of the movable seat. When the center distance of different connecting rods changes, the movable seat can be pushed to produce a corresponding displacement. The displacement sensor can detect the amount of displacement and identify whether the center distance of the connecting rod is large or small. The detection is convenient, simple and efficient.

[0015] 2. In this utility model, the tops of the two pins are set in a conical shape to accommodate connecting rods of more sizes and specifications for testing, thereby improving the flexibility of use.

[0016] 3. In this utility model, a spring is used to support the pin rod in vertical movement, and the pin rod is tapered to ensure that it can be used for testing connecting rods of different sizes and specifications, thus ensuring reliable use.

[0017] 4. In this utility model, the connecting rod is constrained and fixed by a pressure ring to ensure that when the center distance of the connecting rod changes, it pushes the movable seat and the slider to move, rather than tilting up, thereby ensuring the accuracy of the test results. Attached Figure Description

[0018] Figure 1 This is a perspective view of Embodiment 1 of this utility model;

[0019] Figure 2 This is a perspective view of the testing station in Embodiment 1 of this utility model;

[0020] Figure 3 This is a cross-sectional view of Embodiment 1 of this utility model;

[0021] Figure 4 This is an enlarged view of point A in Embodiment 1 of this utility model;

[0022] Figure 5 This is an enlarged view of point B in Embodiment 1 of this utility model;

[0023] Figure 6 This is a perspective view of the testing station in Embodiment 2 of this utility model;

[0024] Figure 7 This is a cross-sectional view of Embodiment 2 of this utility model;

[0025] Figure 8 This is an enlarged view of point C in Embodiment 2 of this utility model;

[0026] Figure 9 This is a schematic diagram of the pressure ring configuration in Embodiment 2 of this utility model.

[0027] Reference numerals in the attached diagram: 1. Fixed seat; 2. Inner sleeve; 3. Pin 1; 4. Spring 1; 5. Fixed block 1; 6. Base plate; 7. Spring 2; 8. Fixed ring plate; 9. Guide rail; 10. Slider; 11. Movable seat; 12. Connecting pipe; 13. Pin 2; 14. Fixed block 2; 15. Spring 3; 16. Movable groove; 17. Positioning bolt; 18. Displacement sensor; 19. Connecting rod body; 20. Connecting rod end ring; 21. Frame; 22. Detection table; 23. Display and control host; 24. Pressure ring; 25. Retainer; 26. Connecting rod; 27. External gear; 28. Internal gear; 29. ​​Hexagonal socket; 30. Threaded rod; 31. Fixing hole; 32. Mounting bracket. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0029] This application provides a connecting rod center distance detection device, mainly solving the problem of low efficiency in current methods of controlling connecting rod center distance through three-dimensional coordinate measurement, and provides the following technical solution, which will be discussed below. Figures 1-6 Please provide a detailed explanation:

[0030] Example 1, please refer to Figures 1-5 A connecting rod center distance detection device includes a frame 21, a detection platform 22 is installed on the top of the frame 21, a fixed seat 1 is installed on the left side of the top center of the detection platform 22, an opening is made on the detection platform 22 corresponding to the position of the fixed seat 1, the bottom part of the fixed seat 1 extends into the opening, a fixed ring plate 8 is fixed on the outside of the fixed seat 1 corresponding to the position of the top surface of the detection platform 22, the fixed ring plate 8 is installed and fixed to the detection platform 22, and a pin 3 is installed on the fixed seat 1;

[0031] A movable seat 11 is installed on the right side of the top center of the testing table 22 and in a straight line with the fixed seat 1. A guide rail 9 is fixed on the top of the testing table 22 below the movable seat 11. A slider 10 is installed on the guide rail 9 and slides in a straight line along the guide rail 9. The movable seat 11 and the slider 10 are fixedly installed. The top surface height of the movable seat 11 is equal to the top surface height of the fixed seat 1. A pin 13 is installed on the movable seat 11 in a straight line with the first pin 3.

[0032] A mounting bracket 32 ​​is fixed on the testing platform 22 on the right side of the guide rail 9. A displacement sensor 18 is installed on the mounting bracket 32, which is aligned with pin 1 3 and pin 2 13. A positioning bolt 17 is fixed on the movable seat 11 at the position corresponding to the displacement sensor 18. The detection end of the displacement sensor 18 abuts against the positioning bolt 17. The connecting rod body 19 is located between the fixed seat 1 and the movable seat 11. Connecting rod end rings 20 are fixed at both ends of the connecting rod body 19. The connecting rod end rings 20 at both ends are fitted onto pin 1 3 and pin 2 13 at the corresponding positions. A display and control host 23 is installed on the front left side of the top of the testing platform 22. The displacement sensor 18 is electrically connected to the display and control host 23.

[0033] Before use, use the standard parts for positioning. Hold the standard connecting rod body 19 and fix one end of the connecting rod end ring 20 on the pin 3 at the fixed seat 1. Then fix the other end of the connecting rod end ring 20 on the pin 13 at the movable seat 11. The movable seat 11 can be adjusted by moving the slider 10 on the guide rail 9. After the connecting rod body 19 is placed, set the standard point or origin point for the displacement sensor 18 from the display and control host 23. Then replace the connecting rod to be tested and place the connecting rod body 19 to be tested in the same way as the standard parts.

[0034] When the center distance between the two ends of the connecting rod end rings 20 on the connecting rod body 19 to be tested differs from that of the standard part, the distance deviation will push the movable seat 11 and the slider 10 to move on the guide rail 9. When it moves towards the fixed seat 1, it indicates that the center distance is small. When it moves towards the displacement sensor 18, it indicates that the center distance is large. The displacement sensor 18 moves with the movable seat 11 and records the final displacement. By comparing the final displacement with the standard point or the original point, it can be determined whether the center distance of the connecting rod being tested is large or small.

[0035] The top parts of both pin 1 (3) and pin 2 (13) are tapered.

[0036] The tapered design allows the pin to fit a wider range of connecting rod end rings 20, enabling center distance detection for connecting rods of different sizes.

[0037] The fixed base 1 is hollow, and an inner sleeve 2 that moves up and down along the fixed base 1 is provided inside the fixed base 1. A fixing block 5 is fixed at the bottom of the inner sleeve 2. A pin 3 is located inside the inner sleeve 2. A spring 4 is installed inside the inner sleeve 2. The two ends of the spring 4 abut against the fixing block 5 and the pin 3 at the corresponding positions.

[0038] A base plate 6 is fixed to the bottom of the fixed seat 1. A spring 7 is installed inside the fixed seat 1 between the base plate 6 and the inner sleeve 2. The two ends of the spring 7 abut against the base plate 6 and the inner sleeve 2 at the corresponding positions.

[0039] The movable seat 11 is hollow, and the second pin 13 is installed inside the movable seat 11. The guide rail 9 has a movable groove 16 corresponding to the position of the second pin 13. The bottom of the movable seat 11 is fixed with a connecting pipe 12 extending into the movable groove 16 corresponding to the position of the second pin 13. The bottom of the connecting pipe 12 is fixed with a fixing block 14. A spring 15 is installed in the connecting pipe 12 between the fixing block 14 and the second pin 13. The two ends of the spring 15 abut against the fixing block 14 and the second pin 13 at the corresponding positions.

[0040] The spring design allows pin 1 (3) and pin 2 (13) to move up and down. When connecting rod end rings 20 of different diameters are fitted, it ensures that pin 1 (3) and pin 2 (13) can be positioned against the inner circumferential wall of the connecting rod end ring 20. It also ensures that the bottom surface of the connecting rod end ring 20 abuts against the top surface of the fixed seat 1 and the movable seat 11. Since the top surfaces of the fixed seat 1 and the movable seat 11 are at the same height, it ensures that the connecting rod body 19 and the displacement sensor 18 are in a straight line, avoiding the situation where the detected data is incorrect due to skew.

[0041] Example 2, please refer to Figures 6-9 Based on Embodiment 1, this embodiment adds the following technical features;

[0042] A pressure ring 24 is provided directly above the connecting rod end ring 20 at both ends of the connecting rod body 19. A retainer 25 is provided directly above the pressure ring 24. The retainer 25 and the pressure ring 24 at the corresponding positions are installed and fixed by multiple connecting rods 26. An internal gear 28 is installed on the retainer 25 at a position coaxial with the pressure ring 24. Three external gears 27 are installed on the retainer 25 at equal intervals at positions corresponding to the outer side of the pressure ring 24. The external gears 27 mesh with the internal gears 28. The center of each of the three external gears 27 is opened, and a threaded rod 30 with a threaded connection passes through the hole. The top of the fixed seat 1 and the movable seat 11 are provided with fixing holes 31 corresponding to the positions of the threaded rods 30. The bottom of the threaded rods 30 is threadedly connected to the fixing holes 31. A hexagonal sleeve 29 fixed to the internal gear 28 is installed on the top of the retainer 25.

[0043] After the connecting rod body 19 is placed and the first pin 3 and the second pin 13 are positioned on the connecting rod end ring 20, the retainer 25 can be held, and the bottom of the threaded rod 30 can be aligned with the fixing hole 31 on the fixed seat 1 or the movable seat 11. Then, the hexagonal sleeve 29 is rotated to drive the internal gear 28 to rotate. Then, the meshing relationship between the internal gear 28 and the external gear 27 is used to drive the external gear 27 to rotate. Since the threaded rod 30 is threadedly connected to the external gear 27, when the retainer 25 is stationary, the threaded rod 30 is driven to rotate, so that the bottom of the threaded rod 30 is connected to the fixing hole 31 and continues to rotate, so that the threaded rod 30 continues to penetrate deeper into the fixing hole 31. At the same time, the retainer 25 and the pressure ring 24 are driven to descend, so that the pressure ring 24 presses on the connecting rod end ring 20 of the fixed seat 1 and the movable seat 11, and cooperates with the flat top surface of the fixed seat 1 and the movable seat 11 to fix the connecting rod body 19.

[0044] Simultaneously, to ensure a straight line with the displacement sensor 18, first fix the connecting rod end ring 20 at the fixed seat 1 position, and then fix the connecting rod end ring 20 at the movable seat 11 position. When the pressure ring 24 at the movable seat 11 position abuts against the connecting rod end ring 20 at that position, the connecting rod body 19 maintains a straight line with the displacement sensor 18. This prevents the connecting rod body 19 at the movable seat 11 position from tilting up instead of pushing the movable seat 11 and the slider 10 to move when the center distance is too large, thus ensuring the accuracy of the detection results. In this embodiment, pin 1 3 and pin 2 13 are completely fixed to the fixed seat 1 and the movable seat 11 at the corresponding positions, without using springs for vertical support.

[0045] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A connecting rod center distance detection device, comprising a detection table (22), characterized in that, A fixed seat (1) is installed on the left side of the top center of the testing platform (22). A pin (3) is installed on the fixed seat (1). A movable seat (11) is installed on the right side of the top center of the testing platform (22) and is in a straight line with the fixed seat (1). A guide rail (9) is fixed on the top of the testing platform (22) below the movable seat (11). A slider (10) is installed on the guide rail (9) and slides linearly along the guide rail (9). The movable seat (11) and the slider (10) are fixedly installed. The top surface height of the movable seat (11) is equal to the top surface height of the fixed seat (1). The movable seat (11) is equipped with a pin (13) in a straight line with the pin (3). The displacement sensor (18) is installed on the detection platform (22) on the right side of the guide rail (9). The displacement sensor (18) abuts against the movable seat (11). The display and control host (23) is installed on the front left side of the top of the detection platform (22). The displacement sensor (18) is electrically connected to the display and control host (23).

2. The connecting rod center distance detection device according to claim 1, characterized in that, A frame (21) is installed below the testing platform (22). The testing platform (22) is fixed to the frame (21). A hole is made on the testing platform (22) corresponding to the position of the fixing seat (1). The bottom part of the fixing seat (1) extends into the hole. A fixing ring plate (8) is fixed on the outside of the fixing seat (1) corresponding to the position of the top surface of the testing platform (22). The fixing ring plate (8) is fixed to the testing platform (22). A mounting bracket (32) is fixed on the testing platform (22) on the right side of the guide rail (9). The displacement sensor (18) is fixed to the mounting bracket (32).

3. The connecting rod center distance detection device according to claim 2, characterized in that, A connecting rod body (19) is provided between the fixed seat (1) and the movable seat (11). Connecting rod end rings (20) are fixed at both ends of the connecting rod body (19). The connecting rod end rings (20) at both ends are fitted onto the corresponding pins 1 (3) and 2 (13). A positioning bolt (17) is fixed on the movable seat (11) at the position corresponding to the displacement sensor (18). The detection end of the displacement sensor (18) abuts against the positioning bolt (17).

4. The connecting rod center distance detection device according to claim 3, characterized in that, The top portions of both pin 1 (3) and pin 2 (13) are tapered.

5. The connecting rod center distance detection device according to claim 4, characterized in that, The fixed seat (1) is hollow, and an inner sleeve (2) that moves up and down along the fixed seat (1) is provided inside the fixed seat (1). A fixing block (5) is fixed at the bottom of the inner sleeve (2). A pin (3) is located inside the inner sleeve (2). A spring (4) is installed inside the inner sleeve (2). The two ends of the spring (4) abut against the fixing block (5) and the pin (3) at the corresponding positions. The movable seat (11) is hollow, and a pin (13) is installed inside the movable seat (11) that moves up and down. A movable groove (16) is pre-set on the rail (9) corresponding to the position of pin 2 (13). A connecting pipe (12) extending into the movable groove (16) is fixed at the bottom of the movable seat (11) corresponding to the position of pin 2 (13). A fixing block 2 (14) is fixed at the bottom of the connecting pipe (12). A spring 3 (15) is installed in the connecting pipe (12) between the fixing block 2 (14) and pin 2 (13). The two ends of the spring 3 (15) abut against the fixing block 2 (14) and pin 2 (13) at the corresponding positions.

6. The connecting rod center distance detection device according to claim 5, characterized in that, The bottom of the fixed seat (1) is fixed with a base plate (6). A second spring (7) is installed in the fixed seat (1) between the base plate (6) and the inner sleeve (2). The two ends of the second spring (7) abut against the base plate (6) and the inner sleeve (2) at the corresponding positions.

7. The connecting rod center distance detection device according to claim 6, characterized in that, A pressure ring (24) is provided directly above the connecting rod end ring (20) at both ends of the connecting rod body (19). A retainer (25) is provided directly above the pressure ring (24). The retainer (25) and the pressure ring (24) at the corresponding position are installed and fixed by multiple connecting rods (26). Multiple threaded rods (30) are installed on the outside of the retainer (25). The top of the fixed seat (1) and the movable seat (11) are provided with fixing holes (31) corresponding to the positions of the threaded rods (30). The bottom of the threaded rods (30) is threadedly connected to the fixing holes (31).

8. The connecting rod center distance detection device according to claim 7, characterized in that, An internal gear (28) is installed on the retainer (25) at a position coaxial with the pressure ring (24). Three external gears (27) are installed on the retainer (25) at equal intervals corresponding to the outer position of the pressure ring (24). The external gears (27) mesh with the internal gears (28). The centers of the three external gears (27) are all opened. The threaded rod (30) passes through the opening and is threaded. A hexagonal sleeve (29) fixed to the internal gear (28) is installed on the top of the retainer (25).

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