A small end taper detection device for an engine connecting rod

Abstract

The utility model belongs to detection device technical field, concretely relates to a little head inclination detection device for engine connecting rod, including setting on base big head positioning subassembly, little head positioning subassembly, standard block and measuring assembly, big head positioning subassembly and little head positioning subassembly interval setting, and big head positioning subassembly can along the direction of close or away from little head positioning subassembly mobile adjustment, can retractable setting has fixed block on big head positioning subassembly and little head positioning subassembly, fixed block fixed connecting rod, standard block independently sets up in little head positioning subassembly one side, measuring assembly can move setting in standard block and little head positioning subassembly one side. Connecting rod both ends are positioned through big head positioning subassembly and little head positioning subassembly respectively, and are fixed through fixed block, simple operation, convenient measurement, fixed block telescopic length is flexible, big head positioning subassembly can along the direction of close or away from little head positioning subassembly mobile adjustment simultaneously, can be applicable to the connecting rod inclined plane measurement of multiple specifications.

Description

Technical Field

[0001] This utility model belongs to the technical field of detection devices, specifically relating to a device for detecting the small end inclination of an engine connecting rod. Background Technology

[0002] In automotive engines, connecting rods typically consist of a large end and a small end, with the small end having a beveled surface. After the connecting rod is machined, the bevel angle needs to be checked to prevent products with large deviations from entering the next process and affecting the quality of the finished product. Current technologies use a single method for checking the bevel angle of the small end, usually employing coordinate measuring machine (CMM). However, CMM is complex and time-consuming, resulting in low production efficiency for connecting rods. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a device for detecting the small end inclination of engine connecting rods. The device is simple to operate and improves the production and processing efficiency of connecting rods.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a small end tilt detection device for engine connecting rods, comprising a large end positioning component, a small end positioning component, a standard block, and a measuring component mounted on a base. The large end positioning component and the small end positioning component are spaced apart, and the large end positioning component can be adjusted by moving closer to or further away from the small end positioning component. A fixing block is telescopically mounted on both the large end positioning component and the small end positioning component, and the fixing block fixes the connecting rod. The standard block is independently mounted on one side of the small end positioning component, and the measuring component is movably mounted on one side of the standard block and the small end positioning component.

[0005] Preferably, the large-head positioning component includes a cylindrical large-head positioning seat, and multiple fixing blocks are provided on the side wall of the large-head positioning seat. The fixing blocks are installed on the large-head positioning seat through a telescopic fixing component. The small-head positioning component includes a cylindrical small-head positioning seat, and multiple fixing blocks are also provided on the side wall of the small-head positioning seat. The fixing blocks are installed on the small-head positioning seat through a telescopic fixing component.

[0006] Preferably, an adjusting slide is fixedly provided at the bottom of the large-head positioning seat, and a limiting frame is fixedly provided on the base. The adjusting slide is locked in the limiting frame, and the adjusting slide moves in the direction of approaching or moving away from the small-head positioning component within the limiting frame.

[0007] Preferably, the telescopic fixing assembly includes a lifting assembly and a fixing column. A fixing column is provided in the middle of both the large-end positioning seat and the small-end positioning seat. The upper side wall of the fixing column presses against one end of the fixing block, and the other end of the fixing block presses against the connecting rod. The cross-section of the upper end of the fixing column corresponding to the fixing block is inclined. The fixing column is more inclined towards the center of the fixing column as it gets closer to the end. One end of the fixing block is also inclined to the fixing column. The fixing block is provided with a reset mechanism. The lower end of the fixing column passes through the base and is connected to the lifting assembly.

[0008] Preferably, the lifting assembly includes a fixed rotating shaft, a fixed cam, a drive plate, and a support spring. The fixed rotating shaft is rotatably mounted below the base, the fixed cam is fixedly mounted on the fixed rotating shaft and is located on the upper side of the drive plate, and both fixed columns are mounted on the drive plate. The larger fixed column is adjustablely mounted on the base and the drive plate, and the smaller fixed column is fixedly mounted on the base and the drive plate. A support platform is provided on the fixed column, and the support spring supports the fixed column and the upper side of the base.

[0009] Preferably, the reset mechanism includes a spring stop and a reset spring, a reset groove is provided on the fixed block, the reset spring is installed in the reset groove, the spring stop is fixedly installed on the large-end positioning seat or the small-end positioning seat, and the reset spring is located on the side of the spring stop closer to the fixed post; or the reset mechanism includes a spring stop and a reset spring, a reset groove is provided on the large-end positioning seat or the small-end positioning seat on the lower side of the fixed block, the reset spring is installed in the reset groove, the spring stop is fixedly installed on the fixed block, and the reset spring is located on the side of the spring stop away from the fixed post.

[0010] Preferably, the measuring assembly includes a central measuring assembly and an inclination measuring assembly disposed on a movable base. The movable base is slidably mounted on a base in a direction perpendicular to the length of the connecting rod. The central measuring assembly is fixedly disposed on the movable base. The inclination measuring assembly is slidably disposed on the movable base in a direction perpendicular to the movement of the movable base. The central measuring assembly is disposed close to the standard block.

[0011] Preferably, the central measurement assembly includes a central measurement frame, a central measurement arm, and a central measurement meter. The central measurement frame is fixedly mounted on a movable base, the central measurement meter is fixedly mounted on the central measurement frame, and two central measurement arms are mounted on the central measurement frame at intervals along the vertical direction. The two probes of the central measurement meter are respectively mounted on the ends of the two central measurement arms.

[0012] Preferably, the inclination measuring assembly includes a slide rail, an inclination measuring arm, and an inclination measuring gauge. The slide rail is inclined on the movable seat in a direction perpendicular to the movement of the movable seat, with one end of the slide rail near the connecting rod being higher than the other end. The inclination measuring arm is slidably mounted on the slide rail, and the inclination measuring gauge is mounted on the inclination measuring arm. The probe of the inclination measuring gauge is mounted on the lower side of the end of the inclination measuring arm. A sliding limit mechanism is also provided on one side of the inclination measuring arm.

[0013] Preferably, the sliding limiting mechanism includes a limiting block and a limiting stop block. The limiting block is fixedly disposed on one side of the slide rail, and two limiting protrusions protrude upward at both ends of the limiting block. The limiting stop block is fixedly disposed on one side of the inclined measuring arm, and the limiting stop block is slidably disposed between the two limiting protrusions.

[0014] Preferably, a middle clamping component is provided between the large-end positioning component and the small-end positioning component, and the end of the middle clamping component can be clamped to the upper side of the middle of the connecting rod.

[0015] Preferably, the central clamping assembly includes a fixed plate, a connecting plate, an adjusting plate, and a fixed arm. The fixed plate is fixedly mounted on the base. The lower end of the adjusting plate is hinged to the fixed plate. The upper end of the connecting plate is hinged to the upper end of the adjusting plate. The lower end of the connecting plate is movably mounted on the upper side of the fixed plate. One end of the fixed arm is hinged to the fixed plate. The lower end of the connecting plate is hinged to the fixed arm. A clamping head is fixedly mounted on the other end of the fixed arm.

[0016] Compared with existing technologies, the above technical solution has the following beneficial effects: 1. In this utility model, the two ends of the connecting rod are positioned by the large-end positioning component and the small-end positioning component, respectively, and fixed by the fixing block. After the fixing block extends out of the large-end positioning component and the small-end positioning component, it presses against the connecting rod to fix it. The operation is simple and the measurement is convenient. The length of the fixing block can be flexibly extended and retracted. At the same time, the large-end positioning component can be moved and adjusted in the direction of approaching or moving away from the small-end positioning component. It can be applied to the measurement of the inclined surface of connecting rods of various specifications. A standard block is set as a control group. The detection method is a comparative method, which reduces the error caused by human factors and is more stable and efficient.

[0017] 2. The lifting assembly uses a fixed rotating shaft and a cam, and uses a spring as a reset mechanism. It can complete the extension and retraction of the fixed block without the need for a power source, and the operation is simple, requiring only the rotation of the fixed rotating shaft.

[0018] 3. The measuring components include a center measuring component and an inclination measuring component. After the center measuring component is calibrated on the standard block, pull the center measuring component to the connecting rod measuring the inclination surface. The displayed value is the center height of the measuring inclination surface. Then pull the inclination measuring component to make the probe contact the measuring inclination surface. Pull the inclination measuring component left and right to make the probe make uniform linear motion on the measuring inclination surface. When the inclination measuring component is pulled to its limit position, the displayed value is the inclination of the connecting rod measuring the inclination surface.

[0019] 4. A middle clamping component is provided between the large-end positioning component and the small-end positioning component. The middle clamping component clamps the middle of the connecting rod to help fix the connecting rod and make the connecting rod measurement process more stable. Attached Figure Description

[0020] Figure 1This is a schematic diagram of the structure of this utility model.

[0021] Figure 2 This is a side view of the connecting rod.

[0022] Figure 3 for Figure 1 Enlarged view of point A in the middle.

[0023] Figure 4 This is a schematic diagram of the structure on the other side of this utility model.

[0024] Figure 5 This is a cross-sectional view of the large-head positioning component.

[0025] Figure 6 A cross-sectional view of the small-head positioning component.

[0026] Figure 7 This is a structural diagram of the telescopic fixing component.

[0027] Figure 8 This is a schematic diagram of the central clamping assembly.

[0028] Figure 9 This is a schematic diagram of the structure of this utility model in use.

[0029] The components include: 1. Base; 2. Large-end positioning assembly; 3. Standard block; 4. Center measuring assembly; 5. Small-end positioning assembly; 6. Inclination measuring assembly; 7. Center clamping assembly; 8. Measuring guide rail; 9. Fixing block; 10. Connecting rod; 11. Large-end end; 12. Small-end end; 13. Measuring inclined surface; 14. Large-end positioning seat; 15. Adjusting slide; 16. Limiting frame; 17. Moving seat; 18. Probe; 19. Center measuring frame; 20. Center measuring gauge; 21. Inclination measuring gauge; 22. Center measuring arm; 23. Limiting block; 24. Limiting stop; 25. Slide rail; 26. Inclined plane measuring arm 27, handle 28, spring stop 29, return spring 30, large end fixing post 31, spring elongated hole 32, large end support spring 33, small end positioning seat 34, small end fixing post 35, spring hole 36, small end support spring 37, handle 38, bearing seat 39, fixed rotating shaft 40, fixed cam 41, drive plate 42, return groove 43, adjustment elongated hole 44, fixed seat 45, fixed plate 46, fixed arm 47, connecting plate 48, adjusting plate 49, operating arm 50, connecting rod 51, clamping head. Detailed Implementation

[0030] Figures 1-9 This is the preferred embodiment of the present invention, which is described below in conjunction with the appendix. Figures 1-9 The present invention will be further described below.

[0031] like Figures 1-2As shown, this utility model discloses a device for detecting the small end inclination of an engine connecting rod, comprising a large end positioning component 2, a small end positioning component 5, a standard block 3, and a measuring component mounted on a base 1. The connecting rod 10 for the engine includes a large end 11 and a small end 12. The upper and lower sides of the small end 12 are inclined, forming a measuring inclined surface 13. The large end positioning component 2 and the small end positioning component 5 are spaced apart. The large end 11 is fixedly fitted onto the large end positioning component 2, and the small end 12 is fixedly fitted onto the small end positioning component 5. The large end positioning component 2 can be positioned close to or away from the small end. The directional movement adjustment of the positioning component 5 can accommodate various specifications of connecting rods 10. A fixing block 9 is telescopically mounted on both the large-end positioning component 2 and the small-end positioning component 5. After the connecting rod 10 is fitted onto the large-end positioning component 2 and the small-end positioning component 5, the fixing block 9 extends out of the large-end positioning component 2 and the small-end positioning component 5 and presses against the connecting rod 10, thus fixing the connecting rod 10. A standard block 3 is independently mounted on one side of the small-end positioning component 5. A measuring component is movably mounted on one side of the standard block 3 and the small-end positioning component 5, and measures the slope of the inclined plane 13.

[0032] The measuring assembly includes a center measuring component 4 and an inclination measuring component 6 mounted on a movable base 17. A standard block 3 has a reference center height for comparison with the center height of the measuring inclined plane 13. The center measuring component 4 measures the center height of the measuring inclined plane 13, and the inclination measuring component 6 measures the inclination of the measuring inclined plane 13. A measuring guide rail 8 is fixedly mounted on the base 1, and the measuring guide rail 8 is mounted on the base 1 in a direction perpendicular to the length of the connecting rod 10. The movable base 17 is slidably connected to the measuring guide rail 8. The center measuring component 4 is fixedly mounted on the movable base 17, and the inclination measuring component 6 is slidably mounted on the movable base 17 in a direction perpendicular to the movement of the movable base 17. On seat 17, the central measuring component 4 is positioned close to the standard block 3. After the center height of the central measuring component 4 is calibrated on the standard block 3, the movable seat 17 is pulled to move the central measuring component 4 to the measuring inclined plane 13 of the connecting rod 10. The displayed value is the center height value of the measuring inclined plane 13. Then, the slope measuring component 6 is pulled to make the slope measuring component 6 contact the measuring inclined plane 13. At the same time, the movable seat 17 is pulled to make the slope measuring component 6 move left and right, so that the slope measuring component 6 makes uniform linear motion on the measuring inclined plane 13. When the slope measuring component 6 is pulled to its limit position, the value measured by the slope measuring component 6 is the slope of the measuring inclined plane 13 of the connecting rod 10.

[0033] The central measuring component 4 includes a central measuring frame 19, a central measuring arm 22, and a central measuring meter 20. The central measuring frame 19 is fixedly mounted on the movable base 17, and the central measuring meter 20 is fixedly mounted on the central measuring frame 19. The central measuring meter 20 displays the height of the standard block 3 and the center height of the measuring inclined plane 13. Two central measuring arms 22 are mounted vertically spaced on the central measuring frame 19. Two probes 18 of the central measuring meter 20 are respectively mounted on the ends of the two central measuring arms 22. The two probes 18 contact the upper and lower end faces of the standard block 3 respectively, and measure the height of the upper and lower end faces as the standard center height of the two measuring inclined planes 13. The central measuring meter 20 displays the center height value.

[0034] like Figure 3 As shown, the inclination measuring component 6 is disposed on one side of the central measuring component 4, and the inclination measuring component 6 is slidably disposed on the movable base 17. The inclination measuring component 6 includes a slide rail 25, an inclination measuring arm 26, and an inclination measuring gauge 21. The slide rail 25 is inclinedly disposed on the movable base 17 in a direction perpendicular to the direction of movement of the movable base 17. One end of the slide rail 25 near the connecting rod 10 is higher than the other end. The inclination of the slide rail 25 corresponds to the inclination angle of the measured inclination surface 13. The inclination measuring arm 26 is slidably mounted on the slide rail 25, and the inclination measuring gauge 21 is mounted on the inclination measuring arm 26. The probe 18 of the inclination measuring gauge 21 is mounted on... The probe 18 contacts and moves on the lower side of the end of the inclined plane measuring arm 26 to measure the slope of the inclined plane 13. A handle 27 is provided on the inclined plane measuring arm 26. The probe 18 of the inclination measuring gauge 21 can be moved at a constant speed in the forward and backward and left and right directions on the inclined plane 13. Here, forward and backward refers to the direction of approaching and moving away from the connecting rod 10, and left and right refers to the same horizontal plane direction perpendicular to the forward and backward direction. The inclination measuring gauge 21 displays the slope of the inclined plane 13. A sliding limit mechanism is also provided on one side of the inclined plane measuring arm 26 to prevent the inclined plane measuring arm 26 from sliding out of the slide rail 25.

[0035] Specifically, the sliding limit mechanism includes a limit block 23 and a limit stop 24. The limit block 23 is fixedly disposed on one side of the slide rail 25, and two limit protrusions protrude upward at both ends of the limit block 23. The limit stop 24 is fixedly disposed on one side of the inclined plane measuring arm 26, and the limit stop 24 is slidably disposed between the two limit protrusions. The limit protrusions restrict the limit stop 24 to slide only between the two limit protrusions, preventing the inclined plane measuring arm 26 from sliding out of the slide rail 25.

[0036] like Figure 4As shown, the large-end positioning assembly 2 includes a cylindrical large-end positioning seat 14. An adjusting slide 15 is fixedly installed at the bottom of the large-end positioning seat 14. A limiting frame 16 is fixedly installed on the base 1 at the position corresponding to the large-end positioning seat 14. The adjusting slide 15 is locked in the limiting frame 16 and moves in the direction of approaching or moving away from the small-end positioning assembly 5 within the limiting frame 16. The annulus of the large-end end 11 is sleeved on the large-end positioning seat 14. Multiple fixing blocks 9 are provided on the side wall of the large-end positioning seat 14. The fixing blocks 9 are installed on the large-end positioning seat 14 through a telescopic fixing assembly. After the fixing blocks 9 extend out of the large-end positioning seat 14, they press against the inner wall of the annulus of the large-end end 11, thus fixing the large-end end 11 of the connecting rod 10. The small-end positioning component 5 includes a cylindrical small-end positioning seat 33, which is fixedly installed on the base 1. Multiple fixing blocks 9 are also provided on the side wall of the small-end positioning seat 33. The fixing blocks 9 are installed on the small-end positioning seat 33 through a telescopic fixing component. After the fixing blocks 9 extend out of the small-end positioning seat 33, they press against the inner wall of the annulus of the small-end end 12 to fix the small-end end 12 of the connecting rod 10. The two ends of the connecting rod 10 are fixed by the large-end positioning seat 14 and the small-end positioning seat 33, and then the measuring slope 13 of the small-end end 12 is measured.

[0037] like Figures 5-6 As shown, the telescopic fixing assembly includes a lifting assembly and fixing columns. A fixing column is provided in the middle of both the large-end positioning seat 14 and the small-end positioning seat 33, namely a large-end fixing column 30 and a small-end fixing column 34. The upper sidewall of the fixing column presses against one end of the fixing block 9, and the other end of the fixing block 9 presses against the connecting rod 10. The cross-section of the large-end fixing column 30 where it is in contact with the fixing block 9 is inclined. The large-end fixing column 30 tilts towards its center closer to the end. One end of the fixing block 9 is also inclined corresponding to the large-end fixing column 30. In this embodiment, the large-end fixing column 30 is cylindrical. The upper section of the device is trapezoidal. The inclined surface of the trapezoid pushes the inclined surface of the fixing block 9. The lower end of the large-head fixing column 30 passes through the base 1 and is connected to the lifting assembly. Since the large-head positioning seat 14 is movable, the large-head fixing column 30 also moves with the large-head positioning seat 14. Therefore, an elongated hole is opened on the base 1. The large-head fixing column 30 is movably installed in the elongated hole. The lifting assembly pushes the large-head fixing column 30 upward. The upper end of the large-head fixing column 30 moves upward and pushes the fixing block 9 outward, so that the fixing block 9 extends out of the large-head positioning seat 14. After the lifting assembly descends, the fixing block 9 retracts and resets back into the large-head positioning seat 14.

[0038] Similarly, the small-end fixing post 34 is also cylindrical, and the upper section of the small-end fixing post 34 is also trapezoidal. The lower end of the small-end fixing post 34 also passes through the base 1 and is connected to the lifting assembly. The small-end fixing post 34 can only be installed in the hole on the base 1 in a liftable manner. When the lifting assembly pushes the small-end fixing post 34 upward, the upper end of the small-end fixing post 34 moves upward and pushes the fixing block 9 outward, so that the fixing block 9 extends out of the small-end positioning seat 33. After the lifting assembly descends, the fixing block 9 retracts and resets back into the small-end positioning seat 33.

[0039] like Figure 7 As shown, the lifting assembly in this embodiment includes a fixed rotating shaft 39, a fixed cam 40, a drive plate 41, and a support spring. The fixed rotating shaft 39 is rotatably mounted below the base 1 via a bearing seat 38. The fixed cam 40 is fixedly mounted on the fixed rotating shaft 39 and is located on the upper side of the drive plate 41. The large-end fixed column 30 and the small-end fixed column 34 are respectively mounted at both ends of the drive plate 41. An adjustment elongated hole 43 is provided on the drive plate 41. The large-end fixed column 30 is movably mounted in the adjustment elongated hole 43. The elongated hole on the base 1 through which the large-end fixed column 30 passes is the spring elongated hole 31. A support platform is provided on the large-end fixed column 30. A support platform is also provided in the spring elongated hole 31. The large-end support spring 32 is located in the spring elongated hole 31 and supported on the support platform. The large-end support spring 32 is sleeved on the outside of the large-end fixed column 30 and is supported between the support platform of the large-end fixed column 30 and the upper side of the support platform of the spring elongated hole 31.

[0040] Similarly, the small-end fixing post 34 is fixedly installed on the drive plate 41. The hole on the base 1 through which the small-end fixing post 34 passes is the spring hole 35. A support platform is also provided on the small-end fixing post 34, and a support platform is also provided in the spring hole 35. The small-end support spring 36 is provided in the spring hole 35 and supported on the support platform. The small-end support spring 36 is sleeved on the outside of the small-end fixing post 34, and the small-end support spring 35 is supported between the support platform of the small-end fixing post 34 and the upper side of the support platform of the spring hole 35. A handle 37 is fixedly installed at the end of the fixed rotating shaft 39. By rotating the fixed cam 40 through the handle 37, the protruding side of the fixed cam 40 no longer presses against the drive plate 41. The elastic force of the small end support spring 36 and the large end support spring 32 respectively supports the small end fixed column 34 and the large end fixed column 30 to move upward, thereby extending the fixed blocks 9 on the small end positioning seat 33 and the large end positioning seat 14 out of the fixed connecting rod 10. By rotating the handle 37 in the opposite direction, the fixed cam 40 presses down on the drive plate 41. The drive plate 41 pulls the small end positioning seat 33 and the large end positioning seat 14 downward, while compressing the small end support spring 36 and the large end support spring 32. Each fixed block 9 is provided with a reset mechanism. After the small end positioning seat 33 and the large end positioning seat 14 move downward, the reset mechanism drives each fixed block 9 to retract and reset, no longer pressing against the fixed connecting rod 10.

[0041] The reset mechanism includes a spring stop 28 and a reset spring 29. A reset groove 42 is provided on the fixed block 9, and the reset spring 29 is installed in the reset groove 42. The spring stop 28 is fixedly set on the large-end positioning seat 14 or the small-end positioning seat 33. The upper end of the spring stop 28 is set in the reset groove 42, and the reset spring 29 is set on the side of the spring stop 28 near the fixed post. In this embodiment, two fixed blocks 9 are symmetrically arranged on the large-end positioning component 2. The reset mechanism of the two fixed blocks 9 adopts this structure. The large-end fixed post 30 moves upward to push the fixed block 9. The fixed block 9 moves outward and compresses the reset spring 29 on the side of the spring stop 28. When the large-end fixed post 30 moves downward, the elastic force of the reset spring 29 pushes the fixed block 9 inward to reset.

[0042] Alternatively, the reset mechanism may include a spring stop 28 and a reset spring 29. A reset groove 42 is provided on the large-end positioning seat 14 or small-end positioning seat 33 on the lower side of the fixed block 9. The reset spring 29 is installed in the reset groove 42. The spring stop 28 is fixedly set on the lower side of the fixed block 9. The reset spring 29 is set on the side of the spring stop 28 away from the fixed post. In this embodiment, four fixed blocks 9 are evenly arranged on the small-end positioning component 5. The reset mechanism of the four fixed blocks 9 adopts this structure. The small-end fixed post 34 moves upward to push the fixed block 9. The fixed block 9 extends outward. The spring stop 28 moves outward and compresses the reset spring 29. When the small-end fixed post 34 moves downward, the elastic force of the reset spring 29 pushes the reset stop 28 and pushes the fixed block 9 inward to reset.

[0043] like Figure 8 As shown, a middle clamping component 7 is provided between the large-end positioning component 2 and the small-end positioning component 5. The end of the middle clamping component 7 can be clamped on the upper side of the middle of the connecting rod 10 to assist the large-end positioning component 2 and the small-end positioning component 5 in fixing the connecting rod 10. Specifically, the middle clamping assembly 7 includes a fixed plate 45, a connecting plate 47, an adjusting plate 48, and a fixed arm 46. The fixed plate 45 is fixedly mounted on the fixed seat 44, which is fixedly mounted on the base 1. The lower end of the adjusting plate 48 is hinged to the lower part of the fixed plate 45. The upper end of the connecting plate 47 is hinged to the upper end of the adjusting plate 48, and the lower end of the connecting plate 47 is movably mounted on the upper side of the fixed plate 45. One end of the fixed arm 46 is hinged to the fixed plate 45, and the end of one end of the fixed arm 46 is located on the side of the connecting plate 47 away from the connecting rod 10. The lower end of the connecting plate 47 is hinged to the fixed arm 46. A connecting rod 50 is fixedly mounted on the other end of the fixed arm 46. A clamping head 51 is fixedly mounted on the lower end of the connecting rod 50. The shape of the clamping head 51 corresponds to the middle part of the connecting rod 10.

[0044] An operating arm 49 is also connected to the upper side of the adjusting plate 48. When the operating arm 19 is pressed down to the side away from the connecting rod 10, the lower end of the adjusting plate 48 rotates around the hinge with the fixed plate 45. At the same time, the upper end of the adjusting plate 48 swings downward, causing the upper end of the connecting plate 47 to swing downward. The fixed plate 45 protrudes upward near the hinge with the fixed arm 46. When the upper end of the connecting plate 47 swings downward, the connecting plate 47 presses against the protrusion of the fixed plate 45, thereby lifting the lower end of the connecting plate 47 upward. This causes the end of the fixed arm 46 near the connecting rod 10 to lift upward. Conversely, lifting the operating arm 19 to the side near the connecting rod 10 will cause the end of the fixed arm 46 near the connecting rod 10 to press downward, thereby pressing the clamping head 51 against the connecting rod 10, assisting the large-end positioning assembly 2 and the small-end positioning assembly 5 in fixing the connecting rod 10.

[0045] like Figure 9 As shown, when using this utility model, the large-end positioning seat 14 is adjusted to a position that matches the connecting rod 10 to be measured and fixed. The large end 11 of the connecting rod 10 is fitted onto the large-end positioning seat 14, and the small end 12 is fitted onto the small-end positioning seat 33. By rotating the fixing cam 40 through the handle 37, the protruding side of the fixing cam 40 no longer presses against the drive plate 41. The elastic force of the small-end support spring 36 and the large-end support spring 32 respectively supports the small-end fixing post 34 and the large-end fixing post 30 to move upward, thereby pushing out the fixing block 9 on the small-end positioning seat 33 and the large-end positioning seat 14 and fixing the connecting rod 10. At the same time, the operating arm 19 is lifted upward, so that the end of the fixing arm 46 near the connecting rod 10 is pressed downward, thereby pressing the clamping head 51 onto the connecting rod 10. The large-end positioning component 2 and the small-end positioning component 5 are used to fix the connecting rod 10, and the measurement can then begin.

[0046] Push the movable seat 17 to bring the central measuring arm 22 close to the standard block 3. The probes 18 on the two central measuring arms 22 contact the upper and lower sides of the standard block 3 respectively, and measure the height of the upper and lower ends of the standard block 3 as the standard center height of the two measuring inclined planes 13. The central measuring meter 20 displays the center height value. Pull the movable seat 17 to move the central measuring arm 22 to the measuring inclined plane 13 of the connecting rod 10. The probes 18 on the two central measuring arms 22 contact the center height of the two measuring inclined planes 13 respectively, and the value displayed by the central measuring meter 20 again is the center height value of the measuring inclined plane 13. Then pull the movable seat 17 and the inclined plane measuring arm 26 to make the probe 18 of the inclination measuring meter 21 contact the measuring inclined plane 13, and move the probe 18 left and right to make the probe 18 make uniform linear motion on the measuring inclined plane 13. Pull to the limit position of the probe 18, and the value measured by the probe 18 is displayed on the inclination measuring meter 21, which is the inclination of the measuring inclined plane 13 of the connecting rod 10.

[0047] Finally, remove the measuring component, press down the operating arm 19, and lift the end of the fixed arm 46 near the connecting rod 10 upwards, so that the clamping head 51 no longer presses against the middle of the connecting rod 10. Rotate the handle 37 in the opposite direction, so that the fixed cam 40 presses down the drive plate 41. The drive plate 41 pulls the small end positioning seat 33 and the large end positioning seat 14 downwards. The elastic force of the return spring 29 of each fixed block 9 resets the fixed block 9, and the fixed block 9 no longer presses against the connecting rod 10. The connecting rod 10 can then be removed. This utility model is simple to operate and convenient to measure. The extension and retraction length of the fixed block 9 is flexible. At the same time, the large end positioning component 2 can be moved and adjusted in the direction of approaching or moving away from the small end positioning component 5. It can be applied to the measurement of the inclined surface of the connecting rod 10 of various specifications. In addition, a standard block 3 is set as a control group, and the detection method is a comparative method, which reduces the error caused by human factors and is more stable and efficient.

[0048] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A device for detecting the small end inclination of an engine connecting rod, characterized in that: It includes a large-head positioning component (2), a small-head positioning component (5), a standard block (3), and a measuring component, all mounted on a base (1). The large-head positioning component (2) and the small-head positioning component (5) are spaced apart, and the large-head positioning component (2) can be moved and adjusted in the direction of approaching or moving away from the small-head positioning component (5). A fixing block (9) is telescopically mounted on both the large-head positioning component (2) and the small-head positioning component (5). The fixing block (9) fixes the connecting rod (10). The standard block (3) is independently mounted on one side of the small-head positioning component (5). The measuring component is movably mounted on one side of the standard block (3) and the small-head positioning component (5).

2. The device for detecting the small end inclination of an engine connecting rod according to claim 1, characterized in that: The large-head positioning component (2) includes a cylindrical large-head positioning seat (14), and multiple fixing blocks (9) are provided on the side wall of the large-head positioning seat (14). The fixing blocks (9) are installed on the large-head positioning seat (14) through a telescopic fixing component. The small-head positioning component (5) includes a cylindrical small-head positioning seat (33), and multiple fixing blocks (9) are also provided on the side wall of the small-head positioning seat (33). The fixing blocks (9) are installed on the small-head positioning seat (33) through a telescopic fixing component.

3. The device for detecting the small end inclination of an engine connecting rod according to claim 2, characterized in that: An adjusting slide (15) is fixedly provided at the bottom of the large head positioning seat (14), and a limiting frame (16) is fixedly provided on the base (1). The adjusting slide (15) is locked in the limiting frame (16), and the adjusting slide (15) moves in the limiting frame (16) in the direction of approaching or moving away from the small head positioning component (5).

4. The device for detecting the small end inclination of an engine connecting rod according to claim 2, characterized in that: The telescopic fixing assembly includes a lifting assembly and a fixing column. A fixing column is provided in the middle of both the large-end positioning seat (14) and the small-end positioning seat (33). The upper side wall of the fixing column presses against one end of the fixing block (9), and the other end of the fixing block (9) presses against the connecting rod (10). The upper end of the fixing column has a sloping cross section corresponding to the fixing block (9). The fixing column is more inclined towards the center of the fixing column as it gets closer to the end. One end of the fixing block (9) is also inclined to the fixing column. The fixing block (9) is provided with a reset mechanism. The lower end of the fixing column passes through the base (1) and is connected to the lifting assembly.

5. The device for detecting the small end inclination of an engine connecting rod according to claim 4, characterized in that: The lifting assembly includes a fixed rotating shaft (39), a fixed cam (40), a drive plate (41), and a support spring. The fixed rotating shaft (39) is rotatably mounted below the base (1). The fixed cam (40) is fixedly mounted on the fixed rotating shaft (39) and is located on the upper side of the drive plate (41). Both fixed columns are mounted on the drive plate (41). The larger fixed column is adjustablely mounted on the base (1) and the drive plate (41), and the smaller fixed column is fixedly mounted on the base (1) and the drive plate (41). A support platform is provided on the fixed column, and the support spring is supported between the fixed column and the upper side of the base (1).

6. The device for detecting the small end inclination of an engine connecting rod according to claim 4, characterized in that: The reset mechanism includes a spring stop (28) and a reset spring (29). A reset groove (42) is provided on the fixed block (9). The reset spring (29) is installed in the reset groove (42). The spring stop (28) is fixedly installed on the large end positioning seat (14) or the small end positioning seat (33). The reset spring (29) is located on the side of the spring stop (28) close to the fixed post. Alternatively, the reset mechanism includes a spring stop (28) and a reset spring (29). A reset groove (42) is provided on the large end positioning seat (14) or the small end positioning seat (33) on the lower side of the fixed block (9). The reset spring (29) is installed in the reset groove (42). The spring stop (28) is fixedly installed on the fixed block (9). The reset spring (29) is located on the side of the spring stop (28) away from the fixed post.

7. The device for detecting the small end inclination of an engine connecting rod according to claim 1, characterized in that: The measuring components include a central measuring component (4) and an inclination measuring component (6) mounted on a movable base (17). The movable base (17) is slidably mounted on the base (1) in a direction perpendicular to the length of the connecting rod (10). The central measuring component (4) is fixedly mounted on the movable base (17). The inclination measuring component (6) is slidably mounted on the movable base (17) in a direction perpendicular to the movement of the movable base (17). The central measuring component (4) is positioned close to the standard block (3).

8. The device for detecting the small end inclination of an engine connecting rod according to claim 7, characterized in that: The central measurement assembly (4) includes a central measurement frame (19), a central measurement arm (22), and a central measurement meter (20). The central measurement frame (19) is fixedly mounted on the movable base (17), and the central measurement meter (20) is fixedly mounted on the central measurement frame (19). Two central measurement arms (22) are installed at intervals along the vertical direction on the central measurement frame (19), and the two probes (18) of the central measurement meter (20) are respectively installed at the ends of the two central measurement arms (22).

9. A device for detecting the small end inclination of an engine connecting rod according to claim 7, characterized in that: The inclination measuring component (6) includes a slide rail (25), an inclination measuring arm (26), and an inclination measuring gauge (21). The slide rail (25) is inclined on the moving seat (17) in a direction perpendicular to the movement of the moving seat (17). One end of the slide rail (25) near the connecting rod (10) is higher than the other end. The inclination measuring arm (26) is slidably mounted on the slide rail (25). The inclination measuring gauge (21) is mounted on the inclination measuring arm (26). The probe (18) of the inclination measuring gauge (21) is mounted on the lower side of the end of the inclination measuring arm (26). A sliding limit mechanism is also provided on one side of the inclination measuring arm (26).

10. A device for detecting the small end inclination of an engine connecting rod according to claim 1, characterized in that: A middle clamping component (7) is provided between the large-head positioning component (2) and the small-head positioning component (5), and the end of the middle clamping component (7) can be clamped to the upper side of the middle part of the connecting rod (10).

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