Engine connecting rod bolt axial force measuring tool

Abstract

The application discloses an engine connecting rod bolt axial force measuring tool, relates to the technical field of connecting rod bolt axial force detection, and comprises a workbench, a screening assembly is fixedly installed on the upper surface of the workbench, a discharging port is fixedly installed at one end of the screening assembly, a digital display meter is arranged on the upper surface of the workbench, and a torque sensor is arranged on the outer surface of the digital display meter. The connecting rod bolt is rapidly screened through the screening assembly, axial force measurement of connecting rod bolts of different models is facilitated, the sleeve on the torque sensor and the connecting rod bolt are fully contacted when the connecting rod bolt is measured through the adoption of the fixing assembly, and therefore the measured data is more accurate. Different specifications of connecting rod bolts can be clamped through the clamping assembly, and corresponding clamping accessories need not be replaced, and therefore the working efficiency of connecting rod bolt axial force measurement is improved.

Description

Technical Field

[0001] This application relates to the field of connecting rod bolt axial force detection technology, and in particular to a tooling for measuring the axial force of engine connecting rod bolts. Background Technology

[0002] Connecting rod bolts are fasteners that connect the bolt head to the shank. They require the use of a nut and are indispensable in daily life and industrial manufacturing; they are often referred to as the "rice of industry." This demonstrates the wide range of applications of connecting rod bolts. Their applications include electronic products, mechanical products, digital products, power equipment, electromechanical products, and even aircraft engines. During the use of connecting rod bolts, measuring fixtures are needed to measure the axial force to ensure that the produced connecting rod bolts meet production requirements.

[0003] The existing technology still has the following problems:

[0004] 1. When measuring the axial force of connecting rod bolts, it is necessary to classify and test connecting rod bolts of different specifications. However, manual classification can easily lead to similar connecting rod bolts being grouped together, which means that the corresponding accessories of the axial force measuring instrument for the corresponding bolt model need to be reinstalled during subsequent measurements, affecting the testing efficiency.

[0005] 2. The existing measuring fixture uses a sliding worktable to connect the connecting rod bolt and the sleeve on the torque sensor. At this time, the sleeve and the connecting rod bolt cannot maintain tight contact, resulting in a large error between the measured data and the actual data, which affects the test results.

[0006] 3. When measuring the axial force of connecting rod bolts of different specifications using existing measuring fixtures, different clamps and anti-rotation sleeves need to be changed. After the measurement is completed, the fixtures need to be disassembled and then other specifications of connecting rod bolts need to be measured. This operation is cumbersome and wastes time. Summary of the Invention

[0007] This application provides a tooling solution for measuring the axial force of engine connecting rod bolts. This solution addresses the problems of errors and low efficiency in manual screening of connecting rod bolts in the prior art, where the sleeve and connecting rod bolt cannot maintain a tight contact. Furthermore, the tooling requires changing different clamps and anti-rotation sleeves when measuring the axial force of connecting rod bolts of different specifications. This solution enables rapid screening of connecting rod bolts, ensures a tight contact between the sleeve and connecting rod bolt, and eliminates the need to change clamps and anti-rotation sleeves when measuring connecting rod bolts of different specifications, resulting in higher measurement efficiency.

[0008] This application provides a fixture for measuring the axial force of engine connecting rod bolts, including a worktable. A screening assembly is fixedly mounted on the upper surface of the worktable, and a discharge port is fixedly mounted at one end of the screening assembly. A digital display is provided on the upper surface of the worktable, and a torque sensor is provided on the outer surface of the digital display. A sleeve is fitted onto the outer surface of the torque sensor. A fixing assembly is fixedly mounted on the upper surface of the worktable, and a working slide is slidably connected to the outer surface of the fixing assembly. A clamping assembly is provided on the side of the working slide near the torque sensor, and an anti-rotation assembly is provided in the inner cavity of the working slide. An axial sensor is provided on the side of the working slide away from the clamping assembly, and a connecting rod bolt is fitted into the inner cavity of the clamping assembly. The outer surface of the connecting rod bolt is fitted with a nut. The screening assembly includes a screening frame. A slide rod is fixedly connected to the upper end of the screening frame. A feeding mechanism is fitted to the outer surface of the slide rod. A lifting block is fixedly installed on the outer surface of the screening frame. A pouring plate is fixedly installed at one end of the screening frame near the lifting block. The pouring plate is inclined. A first rotating rod is fixedly installed on the outer surface of the screening frame. A screening mechanism is rotatably connected to the outer surface of the first rotating rod. A first fixing block is fixedly installed on the outer surface of the screening frame. An adjusting mechanism is slidably connected to the bottom end of the screening mechanism. A collection box is provided below the screening mechanism. A cylinder is fixedly installed on the upper surface of the workbench. A piston rod is slidably connected to the inner cavity of the cylinder.

[0009] Furthermore, the feeding mechanism and the slide rod are slidably connected, the feeding mechanism and the piston rod are fixedly connected, the discharge port is fixed on the screening frame and located directly above the pouring plate, the first fixing block is fixed on one end of the adjustment mechanism, the upper surface of the lifting block is inclined, the lifting block gradually increases towards the pouring plate and the width of the lifting block gradually narrows.

[0010] Furthermore, the feeding mechanism includes a movable frame, with collars fixedly installed at both ends of the movable frame, a feeding plate slidably connected to the bottom end of the movable frame, a connecting frame fixedly installed on the upper surface of the feeding plate, a first spring fixedly connected to both ends of the feeding plate, the top end of the first spring being fixedly connected to the movable frame, the bottom wall of the top end of the connecting frame being flush with the outer upper surface of the lifting block, the feeding mechanism being slidably connected via collars and a sliding rod, and the top end of the movable frame being fixedly sleeved with a piston rod.

[0011] Furthermore, the screening mechanism includes a feeding plate, a rotating sleeve is fixedly installed at the bottom end of the feeding plate, there are four adjusting mechanisms, and the distance from the adjusting mechanism to the rotating sleeve decreases in sequence. There are four rotating sleeves, and the screening mechanism is rotatably connected to the first rotating rod through the rotating sleeves. A first sliding groove is opened at the bottom end of the feeding plate near the first fixed block, and a limit hole is opened on the inner wall of the first sliding groove.

[0012] Furthermore, the adjustment mechanism includes a gravity block, a slider is fixedly connected to the upper end of the gravity block, the slider is slidably connected to the first slide groove, pressing blocks are slidably connected to both ends of the slider, a limit rod is fixedly installed on the outer surface of the pressing block, the limit rod is inserted into the limit hole, and a second spring is fixedly connected to the inner wall of the pressing block.

[0013] Furthermore, the fixing component includes a sliding frame, a slide block is slidably connected to the outer surface of the sliding frame, a second fixing block is fixedly installed in the middle part of the slide block, a second rotating rod is rotatably connected to one side of the sliding frame, a threaded sleeve is provided in the middle part of the second rotating rod, the sliding frame and the threaded sleeve are connected by threads, and the second rotating rod and the slide block are rotatably connected.

[0014] Furthermore, the clamping assembly includes a turntable, with four limit frames fixedly installed on its outer surface. Each limit frame has a first clamping block fixedly installed in its inner cavity, and a second clamping block slidably connected to the inner cavity of the limit frame. A first connecting rod is fixedly installed on the side of the second clamping block away from the first clamping block. A fixed platform is provided in the middle of the turntable, and a second sliding groove is formed on the outer surface of the fixed platform. The second sliding groove is a recessed track slidably connected to the first connecting rod, and the recessed portion is always fixed downwards. A fixed rod is fixedly installed on the outer surface of the fixed platform, and a third rotating rod is fixedly installed on the outer surface of the turntable. The fixed rod and the third rotating rod are rotatably connected. A conveyor belt is sleeved on the outer surface of the third rotating rod, and a stepper motor is installed inside the conveyor belt. A pushing mechanism is sleeved on the outer surface of the third rotating rod.

[0015] Furthermore, when the first clamping block and the second clamping block come into contact, a cavity is formed, and the cavity increases in size sequentially. When the first connecting rod slides around the second slide groove, the first clamping block and the second clamping block are in close contact. When the first connecting rod is located in the recess of the second slide groove, the first clamping block and the second clamping block separate. The cavity formed by the first clamping block and the second clamping block is used to clamp connecting rod bolts of different specifications. The fixed rod is fixedly connected to the inner wall of the working slide. The stepper motor is fixed inside the working slide. The third rotating rod is rotatably connected to the working slide.

[0016] Furthermore, the pushing mechanism includes a fixed base, a first sleeve block is fixedly installed in the middle of the fixed base, a protrusion is fixedly installed at the bottom end of the fixed base, the protrusion is flush with the cavity of the first clamping block at the lowest end, a second connecting rod is fixedly connected to the outer surface of the first sleeve block, a second sleeve block is fixedly installed at the end of the second connecting rod away from the first sleeve block, and the second sleeve block and the fixed rod are fixedly sleeved together.

[0017] Furthermore, the anti-rotation component includes a connecting block, a groove on one side of the connecting block, an elastic block in the inner cavity of the working slide, the groove and the elastic block engaging, the connecting block and the working slide engaging and fixed, a threaded rod rotatably connected to the top of the connecting block, the connecting block and the threaded rod being threadedly connected, a retaining sleeve rotatably connected to the bottom of the threaded rod, the retaining sleeve and the connecting block being slidably connected, the inner cavity of the bottom end of the retaining sleeve being provided with anti-slip texture, and the threaded rod always being connected to the retaining sleeve when the inner cavity of the connecting block moves.

[0018] The technical solution provided in this application has at least the following technical effects or advantages:

[0019] 1. By using a screening component, the invention effectively solves the problem that when measuring the axial force of connecting rod bolts, different specifications of connecting rod bolts need to be classified for testing. Manual classification can easily group similar models of connecting rod bolts into one category, which requires reinstalling the corresponding accessories of the axial force measuring instrument for the corresponding bolt model during subsequent measurements, affecting the testing efficiency. This invention uses a screening component to quickly screen connecting rod bolts, making it easier to measure the axial force of connecting rod bolts of different models.

[0020] 2. By using a fixed component, the problem of existing measuring fixtures where the connecting rod bolt and the sleeve on the torque sensor cannot maintain tight contact due to the sliding of the working slide, resulting in a large error between the measured data and the actual data, affecting the test results, is effectively solved. This invention ensures that the sleeve on the torque sensor and the connecting rod bolt are in full contact during the measurement of the connecting rod bolt by using a fixed component, thereby making the measured data more accurate.

[0021] 3. Due to the use of clamping components, the problem of existing measuring fixtures requiring the replacement of different clamps and anti-rotation sleeves when measuring the axial force of connecting rod bolts of different specifications is effectively solved. After the measurement is completed, the fixtures need to be disassembled and then measured for other specifications of connecting rod bolts. This operation is cumbersome and time-consuming. The present invention can clamp connecting rod bolts of different specifications through clamping components without the need to replace the corresponding clamping accessories, thereby improving the working efficiency of connecting rod bolt axial force measurement. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure in Embodiment 1 of this application;

[0023] Figure 2 This is a schematic diagram of the digital display table structure in Embodiment 1 of this application;

[0024] Figure 3 This is a schematic diagram of the screening rack structure in Embodiment 1 of this application;

[0025] Figure 4This is a schematic diagram of the collection box structure in Embodiment 1 of this application;

[0026] Figure 5 This is a schematic diagram of the slide bar structure in Embodiment 1 of this application;

[0027] Figure 6 This is a schematic diagram of the feeding mechanism structure in Embodiment 1 of this application;

[0028] Figure 7 This is a schematic diagram of the adjustment mechanism structure in Embodiment 1 of this application;

[0029] Figure 8 This is Example 1 of the present application. Figure 7 Enlarged structural diagram at point A;

[0030] Figure 9 This is a schematic diagram of the anti-rotation component structure in Embodiment 2 of this application;

[0031] Figure 10 This is a schematic diagram of the fixed component structure in Embodiment 2 of this application;

[0032] Figure 11 This is a schematic diagram of the clamping component structure in Embodiment 2 of this application;

[0033] Figure 12 This is a schematic diagram of the material pushing mechanism in Embodiment 2 of this application;

[0034] Figure 13 This is a schematic diagram of the fixed platform structure in Embodiment 2 of this application;

[0035] Figure 14 This is a schematic diagram of the bump structure in Embodiment 2 of this application;

[0036] Figure 15 This is a schematic diagram of the card sleeve structure in Embodiment 2 of this application.

[0037] In the diagram: 1. Workbench; 2. Screening assembly; 21. Screening frame; 22. Slide bar; 23. Feeding mechanism; 231. Moving frame; 232. Collar; 233. Feeding plate; 234. Connecting frame; 235. First spring; 24. Lifting block; 25. Discharge plate; 26. First rotating rod; 27. Screening mechanism; 271. Discharge plate; 272. Rotating cylinder; 273. First chute; 274. Limiting hole; 28. First fixing block; 29. ​​Adjusting mechanism; 291. Gravity block; 292. Slider; 293. Pressing block; 294. Limiting rod; 295. Second spring; 210. Collection box; 211. Cylinder; 212. Piston rod; 3. Discharge port; 4. Digital display; 5. Torque sensor; 6. Fixing assembly 61. Sliding frame; 62. Slide seat; 63. Second fixed block; 64. Second rotating rod; 65. Threaded sleeve; 7. Working slide; 8. Clamping assembly; 81. Turntable; 82. Limiting frame; 83. First clamping block; 84. Second clamping block; 85. First connecting rod; 86. Fixed platform; 87. Second slide groove; 88. Fixed rod; 89. Third rotating rod; 810. Conveyor belt; 811. Stepper motor; 812. Pushing mechanism; 8121. Fixed seat; 8122. First sleeve block; 8123. Protrusion; 8124. Second connecting rod; 8125. Second sleeve block; 9. Anti-rotation assembly; 91. Connecting block; 92. Threaded rod; 93. Sleeve; 10. Axial sensor; 11. Connecting rod bolt; 12. Nut. Detailed Implementation

[0038] Manual screening of connecting rod bolts is prone to errors and is inefficient. This invention addresses this by using a screening assembly for rapid screening of connecting rod bolts. Since the sleeve and connecting rod bolt cannot maintain tight contact, this invention uses a fixing assembly to ensure full contact between the sleeve on the torque sensor and the connecting rod bolt during measurement. Furthermore, to accommodate different clamps and anti-rotation sleeves for measuring different types of connecting rod bolts, this invention uses a clamping assembly to hold connecting rod bolts of varying specifications, improving the efficiency of connecting rod bolt axial force measurement.

[0039] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods. Example

[0040] Please see Figure 1 , Figure 2 and Figure 9As shown, an engine connecting rod bolt axial force measuring fixture includes a worktable 1. A screening component 2 is fixedly installed on the upper surface of the worktable 1, and a discharge port 3 is fixedly installed at one end of the screening component 2. A digital display 4 is provided on the upper surface of the worktable 1, and a torque sensor 5 is provided on the outer surface of the digital display 4. A sleeve is fitted onto the outer surface of the torque sensor 5. A fixing component 6 is fixedly installed on the upper surface of the worktable 1, and a working slide 7 is slidably connected to the outer surface of the fixing component 6. A clamping component 8 is provided on the side of the working slide 7 near the torque sensor 5, and an anti-rotation component 9 is provided in the inner cavity of the working slide 7. An axial sensor 10 is provided on the side of the working slide 7 away from the clamping component 8, and a connecting rod bolt 11 is fitted into the inner cavity of the clamping component 8. A nut 12 is fitted onto the outer surface of the connecting rod bolt 11. During measurement, the connecting rod bolt 11 is screened by the screening component 2. The feeding port 3 is used for feeding. The digital display 4 is used to display the data during measurement. The torque sensor 5 and the axial sensor 10 respectively measure torque and axial force. The working slide 7 slides on the fixing component 6. After the connecting rod bolt 11 is fixed in the inner cavity of the clamping component 8, the connecting rod bolt 11 and the sleeve on the torque sensor 5 are brought closer by sliding the working slide 7. Then, the working slide 7 is fixed by the fixing component 6 to improve the accuracy of the measurement data. The anti-rotation component 9 prevents the connecting rod bolt 11 from rotating during measurement. The nut 12 is fitted onto the connecting rod bolt 11 and the sleeve on the torque sensor 5 is fitted together during measurement.

[0041] Please see Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, the screening assembly 2 includes a screening frame 21. A slide rod 22 is fixedly connected to the upper end of the screening frame 21. A feeding mechanism 23 is sleeved on the outer surface of the slide rod 22. A lifting block 24 is fixedly installed on the outer surface of the screening frame 21. A pouring plate 25 is fixedly installed at one end of the screening frame 21 near the lifting block 24. The pouring plate 25 is inclined. A first rotating rod 26 is fixedly installed on the outer surface of the screening frame 21. A screening mechanism 27 is rotatably connected to the outer surface of the first rotating rod 26. A first fixing block 28 is fixedly installed on the outer surface of the screening frame 21. An adjusting mechanism 29 is slidably connected to the bottom end of the screening mechanism 27. A collection box 210 is provided below the screening mechanism 27. A cylinder 211 is fixedly installed on the upper surface of the workbench 1. A piston is slidably connected to the inner cavity of the cylinder 211. Rod 212, feeding mechanism 23 and slide rod 22 are slidably connected, feeding mechanism 23 and piston rod 212 are fixedly connected, discharge port 3 is fixed on screening frame 21 and located directly above discharge plate 25, first fixed block 28 is fixed to one end of adjustment mechanism 29, upper surface of lifting block 24 is inclined, lifting block 24 gradually increases in height towards discharge plate 25 and width of lifting block 24 gradually narrows, feeding mechanism 23 includes moving frame 231, collar 232 is fixedly installed at both ends of moving frame 231, feeding plate 233 is slidably connected to bottom end of moving frame 231, connecting frame 234 is fixedly installed on upper surface of feeding plate 233, first spring 235 is fixedly connected to both ends of feeding plate 233, top end of first spring 235 is fixedly connected to moving frame 231 The top bottom wall of the connecting frame 234 is flush with the outer upper surface of the lifting block 24. During the movement of the feeding mechanism 23 driven by the piston rod 212, when the connecting rod bolt 11 falls onto the pouring plate 25, it will be on the other side of the feeding mechanism 23. Normally, driving the feeding mechanism 23 cannot move the connecting rod bolt 11. Through the contact between the lifting block 24 and the upper part of the connecting frame 234, the connecting frame 234 is lifted on the lifting block 24, i.e., the feeding plate 233 rises. At this time, the first spring 235 is pressed. When the connecting frame 234 reaches the end of the lifting block 24, because the end of the lifting block 24 near the pouring plate 25 is narrower, the lifting block 24 disengages from the connecting frame 234 under the elastic force of the first spring 235. At this time, the feeding plate 233 passes through during the lifting process. The connecting rod bolt 11 is conveyed from one side to the other. The feeding mechanism 23 is slidably connected to the slide rod 22 via the collar 232. The top of the moving frame 231 is fixedly sleeved with the piston rod 212. During the screening of the connecting rod bolt 11, the connecting rod bolt 11 in the discharge port 3 falls onto the pouring plate 25. The connecting rod bolt 11 on the pouring plate 25 rolls down to the bottom of the lifting block 24. The operation of the cylinder 211 drives the piston rod 212 to move. The movement of the piston rod 212 drives the feeding mechanism 23 to move on the slide rod 22. After the feeding mechanism 23 and the lifting block 24 come into contact and disengage, the retraction of the piston rod 212 causes the feeding mechanism 23 to drive the connecting rod bolt 11 to move on the screening mechanism 27.The weight of the connecting rod bolt 11 causes the screening mechanism 27 to rotate. When the screening mechanism 27 rotates, the connecting rod bolt 11 falls onto the collection box 210 for sorting and storage. The first fixing block 28 ensures that the screening mechanism 27 can only rotate in one direction. The adjusting mechanism 29 is used to balance the screening mechanism 27 and allows for easy adjustment of the distance between the adjusting mechanism 29 and the connecting rod bolts 11 of different specifications. This ensures that the rotation of the screening mechanism 27 changes with the weight of the connecting rod bolt 11. Specifically, when there are four specifications of connecting rod bolt 11, the lightest connecting rod bolt 11 will cause the screening mechanism 27 to rotate and fall onto the corresponding collection box 210 only after passing the fourth screening mechanism 27, while the heaviest connecting rod bolt 11 will rotate on the first screening mechanism 27 and fall onto the corresponding collection box 210, thus achieving the sorting of connecting rod bolts 11 of different specifications.

[0042] Please see Figure 7 and Figure 8 As shown, the screening mechanism 27 includes a feeding plate 271, with a rotating sleeve 272 fixedly installed at the bottom end of the feeding plate 271. There are four adjusting mechanisms 29, and the distance from the adjusting mechanism 29 to the rotating sleeve 272 decreases sequentially. The screening mechanism 27 is rotatably connected to the first rotating rod 26 through the rotating sleeve 272. A first sliding groove 273 is provided at the bottom end of the feeding plate 271 near the first fixed block 28. A limit hole 274 is provided on the inner wall of the first sliding groove 273. The adjusting mechanism 29 includes a gravity block 291, with a slider 292 fixedly connected to the upper end of the gravity block 291. The slider 292 is slidably connected to the first sliding groove 273. Pressing blocks 293 are slidably connected to both ends of the slider 292. The outer surface of the pressing block 293 is fixed. A limiting rod 294 is installed, which engages with the limiting hole 274. A second spring 295 is fixedly connected to the inner wall of the pressing block 293. In actual use, the adjusting mechanism 29 can slide in the first slide groove 273 to ensure that the connecting rod bolt 11 rotates when passing the feeding plate 271, so that the connecting rod bolt 11 that conforms to the rules falls onto the cylinder 211. By pressing the pressing block 293, the limiting rod 294 and the limiting hole 274 are disengaged. At this time, the position of the adjusting slider 292 in the first slide groove 273 is adjusted to ensure that the distance from the adjusting mechanism 29 to the rotating cylinder 272 decreases sequentially, so that the feeding plate 271 rotates in a gradient form, which facilitates the classification and falling of connecting rod bolts 11 of different specifications into the collection box 210 during the movement. Example

[0043] Please see Figure 9 and Figure 10As shown, the fixing assembly 6 includes a sliding frame 61, a slide block 62 slidably connected to the outer surface of the sliding frame 61, a second fixing block 63 fixedly installed in the middle part of the slide block 62, a second rotating rod 64 rotatably connected to one side of the sliding frame 61, a threaded sleeve 65 provided in the middle part of the second rotating rod 64, the sliding frame 61 and the threaded sleeve 65 are connected by threads, the second rotating rod 64 and the slide block 62 are rotatably connected, by sliding the working slide table 7 to make the connecting rod bolt 11 and the sleeve on the torque sensor 5 fit together, by moving the position of the second rotating rod 64 in the sliding frame 61, the second fixing block 63 and the end of the working slide table 7 are brought into contact, at this time the threaded sleeve 65 just contacts the sliding frame 61, by rotating the second rotating rod 64 to make the threaded sleeve 65 and the sliding frame 61 threadedly connected, at this time the second fixing block 63 is fixed relative to the working table 1 under the rotation of the second rotating rod 64, so that the connecting rod bolt 11 in the clamping assembly 8 and the sleeve on the torque sensor 5 are in full contact, improving the accuracy of the measurement data.

[0044] Please see Figure 11 , Figure 12 , Figure 13 and Figure 14As shown, the clamping assembly 8 includes a turntable 81. Four limit frames 82 are fixedly installed on the outer surface of the turntable 81, evenly distributed. A first clamping block 83 is fixedly installed in the inner cavity of each limit frame 82. A second clamping block 84 is slidably connected to the inner cavity of the limit frame 82. A first connecting rod 85 is fixedly installed on the side of the second clamping block 84 away from the first clamping block 83. A fixed platform 86 is provided in the middle of the turntable 81. A second sliding groove 87 is formed on the outer surface of the fixed platform 86. The second sliding groove 87 is a recessed track that slidably connects to the first connecting rod 85, and the recessed part is always fixed downwards. A fixed rod 88 is fixedly installed on the outer surface of the fixed platform 86. A third rotating rod 89 is fixedly installed on the outer surface of the turntable 81. The fixed rod 88 and the first connecting rod 89 are connected in a sliding manner. Three rotating rods 89 are rotatably connected. A conveyor belt 810 is sleeved on the outer surface of the third rotating rod 89. A stepper motor 811 is installed in the inner cavity of the conveyor belt 810. A pushing mechanism 812 is sleeved on the outer surface of the third rotating rod 89. When the first clamping block 83 and the second clamping block 84 are in contact, they form a cavity, and the cavity increases in size sequentially. When the first connecting rod 85 slides around the second slide groove 87, the first clamping block 83 and the second clamping block 84 are in close contact. When the first connecting rod 85 is located in the recess of the second slide groove 87, the first clamping block 83 and the second clamping block 84 are separated. The cavity formed by the first clamping block 83 and the second clamping block 84 is used to clamp connecting rod bolts 11 of different specifications. The fixed rod 88 is fixedly connected to the inner wall of the working slide 7. The stepper motor 811 is fixed to the working slide 7. Inside, the third rotating rod 89 is rotatably connected to the working slide 7. The pushing mechanism 812 includes a fixed seat 8121. A first sleeve block 8122 is fixedly installed in the middle of the fixed seat 8121. A protrusion 8123 is fixedly installed at the bottom end of the fixed seat 8121. The protrusion 8123 and the cavity of the lowest first clamping block 83 are flush. A second connecting rod 8124 is fixedly connected to the outer surface of the first sleeve block 8122. A second sleeve block 8125 is fixedly installed at the end of the second connecting rod 8124 away from the first sleeve block 8122. The second sleeve block 8125 and the fixed rod 88 are fixedly sleeved. Different types of connecting rod bolts 11 can be clamped and fixed by the clamping assembly 8, so that the connecting rod bolts 11 are in a stable state during the measurement process. During the measurement, the first clamping block 83 at the top... The first clamp 83 and the second clamp 84 clamp the connecting rod bolt 11. The cavities between the four sets of first clamps 83 and second clamps 84 are of different sizes, used for measuring connecting rod bolts 11 of different specifications. When changing to different models of connecting rod bolts 11, it is not necessary to change the clamps. When the turntable 81 rotates, the anti-rotation component 9 is first loosened. The stepper motor 811 drives the conveyor belt 810 to rotate. The rotation of the conveyor belt 810 drives the third rotating rod 89 to rotate. The rotation of the third rotating rod 89 drives the limit frame 82 to rotate. During the rotation of the limit frame 82, the first clamp 83 remains fixed, while the first connecting rod 85 moves in the second slide groove 87, rotating the measured connecting rod bolt 11 into the recess of the second slide groove 87.At this point, the first clamping block 83 and the second clamping block 84 separate, facilitating the removal of the connecting rod bolt 11. Adjust the position of the turntable 81, place the connecting rod bolt 11 to be measured between the first clamping block 83 and the second clamping block 84, and then rotate the limiting frame 82 holding the connecting rod bolt 11 to its highest position, so that the first clamping block 83 and the second clamping block 84 tightly clamp the connecting rod bolt 11. The fixing rod 88 and the working slide 7 are fixedly connected, ensuring that the fixing table 86 remains fixed during the rotation of the turntable 81. The pushing mechanism 812 can also compress the connecting rod bolt 11. That is, when the limiting frame 82 holding the connecting rod bolt 11 rotates to the recess of the second slide groove 87, the first clamping block 83 and the second clamping block 84 separate. Since the protrusion 8123 is flush with the cavity of the lowest end of the first clamping block 83, when the connecting rod bolt 11 passes through the protrusion 8123, the protrusion 8123 will squeeze out the connecting rod bolt 11, facilitating its removal.

[0045] Please see Figure 10 and Figure 11 As shown, the anti-rotation component 9 includes a connecting block 91. A groove is provided on one side of the connecting block 91. A spring block is provided in the inner cavity of the working slide 7. The groove and the spring block engage, and the connecting block 91 and the working slide 7 are locked together. The connecting block 91 can be removed from the working slide 7. A threaded rod 92 is rotatably connected to the top of the connecting block 91. The connecting block 91 and the threaded rod 92 are connected by a thread. A retaining sleeve 93 is rotatably connected to the bottom end of the threaded rod 92. The retaining sleeve 93 and the connecting block 91 are slidably connected. The inner cavity at the bottom end of the retaining sleeve 93 is provided with anti-slip texture. When the threaded rod 92 moves within the cavity of the connecting block 91, the threaded rod 92 is always connected to the ferrule 93. By placing the connecting block 91 within the cavity of the working slide 7, the threaded rod 92 is rotated to move the ferrule 93 on the connecting block 91. In this way, the lower part of the ferrule 93 contacts the outer surface of the connecting rod bolt 11. The anti-slip texture on the ferrule 93 cooperates with the first clamping block 83 and the second clamping block 84 to stabilize the connecting rod bolt 11 and prevent it from rotating during measurement. Moreover, the movement of the ferrule 93 can accommodate various specifications of connecting rod bolts 11, thus preventing the connecting rod bolt 11 from rotating.

[0046] In summary, when measuring the axial force of connecting rod bolt 11, the specifications of connecting rod bolt 11 are first classified. During the screening of connecting rod bolt 11, the connecting rod bolt 11 in the discharge port 3 falls onto the pouring plate 25. The connecting rod bolt 11 on the pouring plate 25 rolls down to the bottom of the lifting block 24. The operation of cylinder 211 drives the connecting rod bolt 11 to move on the screening mechanism 27. The weight of the connecting rod bolt 11 can cause the screening mechanism 27 to rotate. When the screening mechanism 27 rotates, the connecting rod bolt 11 falls onto the collection box 210 for classified storage. The first fixing block 28 is to ensure that the screening mechanism 27 can only rotate in one direction. The adjusting mechanism 29 is used to balance the screening mechanism 27 and facilitates adjustment according to different specifications of connecting rod bolt 11. 9. The distance is adjusted to ensure that the rotation of the screening mechanism 27 changes with the increase of the weight of the connecting rod bolt 11, thereby realizing the sorting of connecting rod bolts 11 of different specifications. After the working slide 7 is slid to make the connecting rod bolt 11 and the sleeve on the torque sensor 5 fit together, the second rotating rod 64 is moved to the position of the sliding frame 61, so that the second fixed block 63 and the end of the working slide 7 are in contact. At this time, the threaded sleeve 65 just contacts the sliding frame 61. By rotating the second rotating rod 64, the threaded sleeve 65 and the sliding frame 61 are threadedly connected. At this time, the second fixed block 63 is fixed relative to the working table 1 under the rotation of the second rotating rod 64, so that the connecting rod bolt 11 in the clamping assembly 8 and the sleeve on the torque sensor 5 are in full contact, improving the accuracy of the measurement data. The clamping assembly 8 can clamp and fix different types of connecting rod bolts 11, ensuring the connecting rod bolts 11 remain stable during measurement. During measurement, the first clamping block 83 and the second clamping block 84 at the top clamp the connecting rod bolt 11. The cavities between the four sets of first clamping blocks 83 and second clamping blocks 84 are of different sizes, used for measuring different specifications of connecting rod bolts 11. When changing to different types of connecting rod bolts 11, the clamps do not need to be changed. When the turntable 81 rotates, the anti-rotation assembly 9 is first released. The stepper motor 811 drives the limit frame 82 to rotate. During the rotation of the limit frame 82, the first clamping block 83 remains fixed, while the first connecting rod 85 moves within the second slide groove 87, completing the measurement. The connecting rod bolt 11 is rotated to the recess of the second slide groove 87. At this time, the first clamping block 83 and the second clamping block 84 separate, making it easy to remove the connecting rod bolt 11. Adjust the position of the turntable 81 and place the connecting rod bolt 11 to be measured between the first clamping block 83 and the second clamping block 84. Then rotate the limiting frame 82 holding the connecting rod bolt 11 to the top, so that the first clamping block 83 and the second clamping block 84 tightly clamp the connecting rod bolt 11. The fixing rod 88 and the working slide 7 are fixedly connected to ensure that the fixing table 86 remains fixed during the rotation of the turntable 81. The pushing mechanism 812 can squeeze the connecting rod bolt 11. When the connecting rod bolt 11 passes the protrusion 8123, the protrusion 8123 will squeeze out the connecting rod bolt 11, making it easy to remove the connecting rod bolt 11.By rotating the threaded rod 92, the ferrule 93 moves on the connecting block 91, so that the lower part of the ferrule 93 contacts the outer surface of the connecting rod bolt 11. The anti-slip texture on the ferrule 93 cooperates with the first clamping block 83 and the second clamping block 84 to stabilize the connecting rod bolt 11 and prevent it from rotating during measurement. Furthermore, the movement of the ferrule 93 can accommodate various sizes of connecting rod bolts 11, preventing rotation and making the measured axial force of the connecting rod bolt 11 more accurate.

[0047] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

[0048] The above description is merely a preferred embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present application, based on the technical solution and concept of the present application, should be covered within the scope of protection of the present application.

Claims

1. A fixture for measuring the axial force of engine connecting rod bolts, comprising a worktable (1), characterized in that, A screening component (2) is fixedly installed on the upper surface of the workbench (1). A discharge port (3) is fixedly installed at one end of the screening component (2). A digital display (4) is provided on the upper surface of the workbench (1). A torque sensor (5) is provided on the outer surface of the digital display (4). A sleeve is fitted on the outer surface of the torque sensor (5). A fixing component (6) is fixedly installed on the upper surface of the workbench (1). A working slide (7) is slidably connected to the outer surface of the fixing component (6). A clamping component (8) is provided on the side of the working slide (7) close to the torque sensor (5). An anti-rotation component (9) is provided in the inner cavity of the working slide (7). An axial sensor (10) is provided on the side of the working slide (7) away from the clamping component (8). A connecting rod bolt (11) is fitted in the inner cavity of the clamping component (8). A nut (12) is fitted on the outer surface of the connecting rod bolt (11). The screening component (2) includes a screening frame (21), with a slide rod (22) fixedly connected to the upper end of the screening frame (21). A feeding mechanism (23) is sleeved on the outer surface of the slide rod (22). A lifting block (24) is fixedly installed on the outer surface of the screening frame (21). A pouring plate (25) is fixedly installed at one end of the screening frame (21) near the lifting block (24). The pouring plate (25) is inclined. A first rotating rod is fixedly installed on the outer surface of the screening frame (21). (26) A screening mechanism (27) is rotatably connected to the outer surface of the first rotating rod (26). A first fixing block (28) is fixedly installed on the outer surface of the screening frame (21). An adjustment mechanism (29) is slidably connected to the bottom end of the screening mechanism (27). A collection box (210) is provided below the screening mechanism (27). A cylinder (211) is fixedly installed on the upper surface of the workbench (1). A piston rod (212) is slidably connected to the inner cavity of the cylinder (211). The feeding mechanism (23) and the slide rod (22) are slidably connected, the feeding mechanism (23) and the piston rod (212) are fixedly connected, the discharge port (3) is fixed on the screening frame (21) and located directly above the pouring plate (25), the first fixing block (28) is fixed on one end of the adjusting mechanism (29), the upper surface of the lifting block (24) is inclined, the lifting block (24) gradually increases towards the pouring plate (25), and the width of the lifting block (24) gradually narrows; The feeding mechanism (23) includes a movable frame (231), with collars (232) fixedly installed at both ends of the movable frame (231). A feeding plate (233) is slidably connected to the bottom end of the movable frame (231). A connecting frame (234) is fixedly installed on the upper surface of the feeding plate (233). A first spring (235) is fixedly connected to both ends of the feeding plate (233). The top end of the first spring (235) is fixedly connected to the movable frame (231). The bottom wall of the top end of the connecting frame (234) is flush with the outer upper surface of the lifting block (24). The feeding mechanism (23) includes a movable frame (231), with collars (232) fixedly installed at both ends of the movable frame (231). A feeding plate (233) is slidably connected to the bottom end of the movable frame (231). A connecting frame (234) is flush with the outer upper surface of the lifting block (24). 3) The top of the moving frame (231) and the piston rod (212) are fixedly connected by the collar (232) and the sliding rod (22). The connecting frame (234) is raised on the lifting block (24) by contacting the top of the lifting block (234) through the lifting block (24). When the connecting frame (234) reaches the end of the lifting block (24), the lifting block (24) disengages from the connecting frame (234) under the elastic force of the first spring (235). At this time, the feeding plate (233) moves from one side of the connecting rod bolt (11) to the other side of the connecting rod bolt (11) during the lifting process.

2. The engine connecting rod bolt axial force measuring fixture as described in claim 1, characterized in that, The screening mechanism (27) includes a feeding plate (271), and a rotating cylinder (272) is fixedly installed at the bottom end of the feeding plate (271). There are four adjusting mechanisms (29), and the distance from the adjusting mechanism (29) to the rotating cylinder (272) decreases sequentially. There are four rotating cylinders (272). The screening mechanism (27) is rotatably connected to the first rotating rod (26) through the rotating cylinder (272). A first sliding groove (273) is provided at the bottom end of the feeding plate (271) near the first fixed block (28). A limit hole (274) is provided on the inner wall of the first sliding groove (273).

3. The engine connecting rod bolt axial force measuring fixture as described in claim 2, characterized in that, The adjustment mechanism (29) includes a gravity block (291), a slider (292) is fixedly connected to the upper end of the gravity block (291), the slider (292) is slidably connected to the first slide groove (273), and pressing blocks (293) are slidably connected to both ends of the slider (292). A limit rod (294) is fixedly installed on the outer surface of the pressing block (293), the limit rod (294) is inserted into the limit hole (274), and a second spring (295) is fixedly connected to the inner wall of the pressing block (293).

4. The engine connecting rod bolt axial force measuring fixture as described in claim 1, characterized in that, The fixing component (6) includes a sliding frame (61), a slide block (62) is slidably connected to the outer surface of the sliding frame (61), a second fixing block (63) is fixedly installed in the middle part of the slide block (62), a second rotating rod (64) is rotatably connected to one side of the sliding frame (61), a threaded sleeve (65) is provided in the middle part of the second rotating rod (64), the sliding frame (61) and the threaded sleeve (65) are connected by threads, and the second rotating rod (64) and the slide block (62) are rotatably connected.

5. The engine connecting rod bolt axial force measuring fixture as described in claim 1, characterized in that, The clamping assembly (8) includes a turntable (81). Four limit frames (82) are fixedly installed on the outer surface of the turntable (81) and evenly distributed on its outer surface. A first clamping block (83) is fixedly installed in the inner cavity of each limit frame (82). A second clamping block (84) is slidably connected to the inner cavity of the limit frame (82). A first connecting rod (85) is fixedly installed on the side of the second clamping block (84) away from the first clamping block (83). A fixed platform (86) is provided in the middle of the turntable (81), and a second sliding surface is provided on the outer surface of the fixed platform (86). The groove (87) is a recessed track and a first connecting rod (85) that are slidably connected, and the recessed part is always fixed downward. A fixed rod (88) is fixedly installed on the outer surface of the fixed platform (86). A third rotating rod (89) is fixedly installed on the outer surface of the turntable (81). The fixed rod (88) and the third rotating rod (89) are rotatably connected. A conveyor belt (810) is sleeved on the outer surface of the third rotating rod (89). A stepper motor (811) is provided in the inner cavity of the conveyor belt (810). A pusher mechanism (812) is sleeved on the outer surface of the third rotating rod (89).

6. The engine connecting rod bolt axial force measuring fixture as described in claim 5, characterized in that, When the first clamping block (83) and the second clamping block (84) come into contact, a cavity is formed, and the cavity increases in size sequentially. When the first connecting rod (85) slides circumferentially in the second slide groove (87), the first clamping block (83) and the second clamping block (84) are in close contact. When the first connecting rod (85) is located in the recess of the second slide groove (87), the first clamping block (83) and the second clamping block (84) separate. The cavity formed by the first clamping block (83) and the second clamping block (84) is used to clamp connecting rod bolts (11) of different specifications. The fixed rod (88) is fixedly connected to the inner wall of the working slide (7). The stepper motor (811) is fixed inside the working slide (7). The third rotating rod (89) is rotatably connected to the working slide (7).

7. The engine connecting rod bolt axial force measuring fixture as described in claim 6, characterized in that, The pushing mechanism (812) includes a fixed seat (8121), a first sleeve block (8122) is fixedly installed in the middle of the fixed seat (8121), a protrusion (8123) is fixedly installed at the bottom end of the fixed seat (8121), the protrusion (8123) and the cavity of the lowest first clamping block (83) are flush, a second connecting rod (8124) is fixedly connected to the outer surface of the first sleeve block (8122), a second sleeve block (8125) is fixedly installed at the end of the second connecting rod (8124) away from the first sleeve block (8122), and the second sleeve block (8125) and the fixed rod (88) are fixedly sleeved together.

8. The engine connecting rod bolt axial force measuring fixture as described in claim 1, characterized in that, The anti-rotation component (9) includes a connecting block (91), a groove is provided on one side of the connecting block (91), an elastic block is provided in the inner cavity of the working slide (7), the groove and the elastic block are engaged, the connecting block (91) and the working slide (7) are engaged and fixed, a threaded rod (92) is rotatably connected to the top of the connecting block (91), the connecting block (91) and the threaded rod (92) are connected by threads, a sleeve (93) is rotatably connected to the bottom of the threaded rod (92), the sleeve (93) and the connecting block (91) are slidably connected, the inner cavity of the bottom end of the sleeve (93) is provided with anti-slip texture, and the threaded rod (92) is always connected to the sleeve (93) when the inner cavity of the connecting block (91) moves.

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