Full-automatic automobile engine cylinder body detection equipment

Abstract

The invention relates to full-automatic automobile engine cylinder body detection equipment, which comprises a machine body, a first detection head, a second detection head, a third detection head, a first driving mechanism for driving the first detection head to move and a second driving mechanism for driving the second detection head, a conveying mechanism for driving an engine cylinder to move is arranged on the machine body, the first detection head comprises a first barrel, a first sensor, a push block, a pressing block and a first air cylinder, the first barrel is installed on the first driving mechanism, the first air cylinder is installed in the first barrel, the pressing block is connected to the first air cylinder, and a pressure applying ring surface is arranged on the pressing block; the push block is arranged in the first cylinder in a sliding fit mode, a plurality of detection windows are arranged on the first cylinder, a push inclined face is arranged at the end of the push block, the first sensor is connected into the first cylinder and penetrates through the push block, and a reset spring is arranged between the push block and the first cylinder. The method has the effects of improving the detection accuracy and reducing scratches on the inner hole wall of the engine shell.

Description

Technical Field

[0001] This application relates to the field of automotive engine cylinder block testing technology, and in particular to a fully automatic automotive engine cylinder block testing device. Background Technology

[0002] There is a set of high-precision holes on the cylinder block of a car engine. Each hole determines whether the engine is running normally. Some holes are long and require measurement of multiple cross sections, multiple directions, coaxiality and straightness. If manual inspection is performed, the inspection speed is slow and the inspection time is increased. The inspection method will directly determine the measurement results and the accuracy is unstable. In order to improve the inspection efficiency and accuracy, it is necessary to design an automatic inspection device for car engine cylinder blocks.

[0003] Existing testing equipment often uses a contact method. Specifically, it uses a sensor in conjunction with a probe. The probe contacts the inner wall of the cylinder bore of an automobile engine, and the sensor detects the displacement of the probe to measure the diameter of the cylinder bore. However, during the measurement process, the probe is constantly sliding and rubbing against the inner wall of the bore. On the one hand, this can easily cause wear to the probe, affecting the accuracy of the test. On the other hand, the inner wall of the cylinder bore is prone to scratches, which is not conducive to meeting the roughness requirements of the inner wall. Summary of the Invention

[0004] To overcome the above-mentioned deficiencies, this application provides a fully automatic automotive engine cylinder block testing device.

[0005] This application provides a fully automated automotive engine cylinder block testing equipment using the following technical solution: A fully automatic automotive engine cylinder block testing device includes a body with a vertically arranged first testing head, a horizontally arranged second testing head, and a third testing head. The body also includes a first driving mechanism for moving the first testing head and a second driving mechanism for moving the second testing head. A conveying mechanism for moving the engine cylinder block is also provided on the body. The first testing head includes a first cylinder, a first sensor, a push block, a pressure block, and a first cylinder. The first cylinder is mounted on the moving end of the first driving mechanism, and the first cylinder is mounted inside the first cylinder. The pressure block is connected to the output shaft of the first cylinder and has a pressure-applying ring surface. Several push blocks are provided, all slidably fitted inside the first cylinder. The first cylinder has several testing windows, with each push block corresponding to one of the testing windows. Each push block has a pushing inclined surface at its end, which engages with the pressure-applying ring surface. The first sensor is connected inside the first cylinder and passes through one of the push blocks. A return spring is provided between the push block and the first cylinder. Initially, the testing end of the first sensor is located within the testing window.

[0006] By adopting the above technical solution, during testing, the engine block is transported to the testing station via a conveying mechanism. The first detection head moves via a first drive mechanism and enters the inner hole of the engine block's top wall. The first cylinder is activated, causing the pressure block to descend, which in turn moves the push block. The return spring is compressed, thereby moving the detection end of the first sensor to the outside of the detection window to detect the hole diameter. Multiple measurements are then taken along the height direction, achieving the detection effect of the inner hole of the engine block's top wall. Subsequently, the second and third detection heads are driven by a second drive mechanism to move, similarly detecting the inner holes of the engine housing's side walls multiple times. Finally, the conveying mechanism transports the engine housing to a designated position, achieving the effect of automatically detecting the inner holes of the engine housing's top and side walls. Through the cooperation of components such as the first cylinder, pressure block, push block, first sensor, and return spring, the detection end of the first sensor is moved out of the detection window at a designated position, detecting the inner diameter of the hole through intermittent contact. Compared with existing technologies, this reduces the possibility of wear on the first sensor's detection end, improving detection accuracy, and also reduces the possibility of scratches on the hole wall surface, ensuring the surface roughness of the engine block's inner hole as much as possible.

[0007] Optionally, the second detection head includes a second cylinder, a second cylinder, a pull rod, a rotating frame, a contact head, a compression spring, and a second sensor. The second cylinder is installed on the moving end of the second drive mechanism. The second cylinder is provided with a plurality of detection ports. The rotating frame is rotatably connected to the detection ports. The contact head is connected to one end of the rotating frame. The compression spring is connected to the second cylinder and one end of the rotating frame. The second sensor is installed in the second cylinder, and the detection end of the second sensor abuts against the other end of the rotating frame. The second cylinder is installed in the second cylinder. The pull rod is connected to the output shaft of the second cylinder. A pull ring is provided at the end of the pull rod. One end of the rotating frame is located on the moving path of the pull ring. The structure of the third detection head is the same as that of the second detection head.

[0008] By adopting the above technical solution, during testing, before the second detection head enters the engine cylinder block, the second cylinder is activated, the lever moves, driving the pull ring to move, causing the rotating frame to rotate. The detection head enters the detection port until the detection port enters the bore of the engine cylinder block. The second cylinder then controls the pull ring to move in the opposite direction to disengage from the rotating frame. Under the force of the compression spring, the contact head moves in the opposite direction and contacts the inner wall of the bore. The detection end of the second sensor measures the bore diameter of the engine cylinder block by detecting the rotation angle of the rotating frame. Subsequently, through the cooperation of the second drive mechanism and the second cylinder, multiple measurements are performed in the length direction of the engine cylinder block bore, achieving the detection effect of the second detection head. Multiple intermittent measurements are achieved through components such as the second cylinder, rotating frame, second sensor, compression spring, and contact head, reducing wear on the contact head and the possibility of scratches on the bore wall of the engine cylinder block.

[0009] Optionally, the ends of the first detection head, the second detection head, and the third detection head are all connected to an air blowing plate. The surface of the air blowing plate has several air holes, and an air head connected to the air holes is provided on the air blowing plate. The air head is connected to an external air source.

[0010] By adopting the above technical solution, residual debris exists on the inner wall of the engine cylinder before testing, which can affect the testing accuracy. Before testing, an external air source supplies air to the air blowing plate, and the air is blown out through the air holes to disperse the debris, ensuring the cleanliness of the inner wall of the holes. This ensures the accuracy of the testing of the inner holes of the engine cylinder and reduces the possibility of damage to the testing end.

[0011] Optionally, the machine body is provided with a calibration component, which includes a first ring gauge, a second ring gauge, and a third ring gauge. The machine body is provided with a mounting bracket, on which a push plate is slidably fitted. An ejection cylinder is provided between the mounting bracket and the push plate. The axis of the first ring gauge is arranged in the same direction as the axis of the first detection head. Similarly, the second ring gauge and the third ring gauge are provided. The first ring gauge is used to zero the first detection head, the second ring gauge is used to zero the second detection head, and the third ring gauge is used to zero the third detection head.

[0012] By adopting the above technical solution, before testing, the first ring gauge is moved by the cooperation of the cylinder and the push plate, so as to facilitate the first inspection head to check the inspection size and use this as a reference to zero the setting, so as to facilitate the specific deviation value of the engine cylinder bore diameter.

[0013] Optionally, the conveying mechanism includes a conveying channel, a transfer channel, and a testing platform. The conveying channel, the testing platform, and the transfer channel are all mounted on the machine body. The testing platform is perpendicular to the conveying channel. The transfer channel is located between the conveying channel and the testing platform. Conveying rollers and conveying motors are mounted on the conveying channel, the testing platform, and the transfer channel. The conveying motors drive the conveying rollers to rotate. The transfer channel is equipped with a rotating platform for steering the engine block conveying direction and a transfer lifting component for raising the engine block. The testing platform is equipped with a positioning component for restricting the movement of the engine block.

[0014] By adopting the above technical solution, when conveying the engine block, the engine block is placed on the conveying channel. Through the cooperation of the conveying motor and the conveying roller, the engine block is moved to the transfer channel. The transfer lifting component is used to push the engine block out to get it off the conveying roller. The conveying angle is adjusted by the rotating table. Then the engine block is transferred to the inspection table. The positioning component is used to restrict the movement of the engine block, so that the inner hole of the engine block can be inspected. After inspection, it can be returned to the conveying channel to continue conveying.

[0015] Optionally, the positioning assembly includes a contact block, a positioning post, a lifting post, a lifting platform, and a lifting hydraulic cylinder. The lifting hydraulic cylinder is vertically connected to the testing platform, and the lifting platform is connected to the output shaft of the lifting hydraulic cylinder. Several positioning posts and lifting posts are provided and connected to the lifting platform. The height of the positioning post is greater than the height of the lifting post. A positioning hole is provided on the bottom wall of the engine cylinder block. During positioning, the top of the positioning post is inserted into the positioning hole on the bottom wall of the engine cylinder block, and the lifting post contacts the bottom wall of the engine cylinder block.

[0016] By adopting the above technical solution, when restricting the position of the engine cylinder block, the lifting hydraulic cylinder is activated to drive the lifting platform to rise, causing the positioning column and the lifting column to rise. The positioning column is first inserted into the bottom wall of the engine cylinder block to calibrate the position of the engine cylinder block. Then the lifting column pushes out of the engine cylinder block, so that the test hole of the engine cylinder block is flush with the second and third test heads, thereby achieving the effect of restricting the position of the engine cylinder block.

[0017] Optionally, the second driving mechanism includes a lateral driving component and a longitudinal driving component for driving the second detection head to move longitudinally. The lateral driving component includes a moving stage, a lateral motor, a lateral screw, a moving base, and a fixed base. The moving stage is connected to the moving end of the longitudinal driving component, and the fixed base is connected to the end of the moving stage. The moving base is slidably fitted on the moving stage. The lateral screw is rotatably connected to the moving stage and threadedly fitted with the moving base. The lateral motor is mounted on the moving stage and coaxially connected to the lateral screw. The second detection head is mounted on the moving base and passes through the fixed base. Similarly, the third detection head is provided.

[0018] By adopting the above technical solution, during the inspection, the moving stage is moved to the designated position by the longitudinal drive component, and then the transverse motor is started to make the transverse screw rotate, which drives the moving seat to move, thereby moving the second inspection head and achieving the effect of driving the second inspection head to inspect the inner bore of the engine cylinder. The third inspection head is driven in the same way.

[0019] Optionally, the longitudinal drive assembly includes a longitudinal motor, a drive gear, and a fixed rack. The fixed rack is connected to the machine body and is perpendicular to the transverse screw. The movable stage is slidably fitted on the machine body and the sliding direction is perpendicular to the transverse screw. The longitudinal motor is mounted on the movable stage. The drive gear is connected to the output shaft of the longitudinal motor (521) and meshes with the fixed rack.

[0020] By adopting the above technical solution, when driving the second detection head to move longitudinally, the longitudinal motor is started, causing the drive gear to rotate. Through the meshing of the drive gear and the fixed rack, the moving table moves, thereby achieving the effect of driving the second detection head to move longitudinally.

[0021] Optionally, the second detection head is connected to an extension rod, which passes through the movable seat and the fixed seat, and the end of the extension rod is connected to several counterweights.

[0022] By adopting the above technical solution, the detection range of the second detection head is extended by setting an extension rod, and a counterweight is set to ensure that the second detection head remains horizontal throughout its movement, reducing the possibility of the second detection head sagging.

[0023] In summary, this application includes at least one of the following beneficial technical effects: During testing, the engine block is transported to the testing station via a conveying mechanism. The first testing head moves via a first drive mechanism and enters the inner hole of the engine block's top wall. The first cylinder is activated, causing the pressure block to descend, which in turn moves the push block. The return spring is compressed, thereby moving the detection end of the first sensor outside the testing window to detect the hole diameter. Multiple measurements are then taken along the height direction, achieving the desired detection of the inner hole of the engine block's top wall. Subsequently, a second drive mechanism drives the second and third testing heads to move, similarly performing multiple measurements of the inner hole of the engine housing's side wall. Finally, the conveying mechanism transports the engine housing to a designated position, achieving automatic detection of the inner holes of the engine housing's top and side walls. Through the cooperation of components such as the first cylinder, pressure block, push block, first sensor, and return spring, the first sensor's detection end is moved out of the testing window at a designated position, allowing for intermittent contact detection of the hole's inner diameter. Compared to existing technologies, this reduces the possibility of wear on the first sensor's detection end, improving detection accuracy, and also reduces the possibility of scratches on the hole wall surface, ensuring the surface roughness of the engine block's inner hole as much as possible. During testing, before the second detection head enters the engine block, the second cylinder is activated, moving the lever and causing the pull ring to move, which in turn rotates the rotating frame. The detection head then enters the detection port until it reaches the bore of the engine block. The second cylinder then controls the pull ring to move in the opposite direction, disengaging it from the rotating frame. Under the force of the compression spring, the contact head moves in the opposite direction and contacts the inner wall of the bore. The detection end of the second sensor measures the bore diameter of the engine block by detecting the rotation angle of the rotating frame. Subsequently, through the cooperation of the second drive mechanism and the second cylinder, multiple measurements are performed along the length of the engine block bore, achieving the detection effect of the second detection head. By using components such as the second cylinder, rotating frame, second sensor, compression spring, and contact head, multiple intermittent measurements are achieved, reducing wear on the contact head and minimizing the possibility of scratches on the engine block bore wall. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the detection device in the embodiments of this application.

[0025] Figure 2This is a schematic diagram of the conveying mechanism in the embodiments of this application.

[0026] Figure 3 This is a cross-sectional view used in the embodiments of this application to illustrate the structure of the detection stage and positioning component.

[0027] Figure 4 This is a schematic diagram of the structure of the first driving component and the first detection head in the embodiments of this application.

[0028] Figure 5 This is a cross-sectional view used in the embodiments of this application to illustrate the internal structure of the first detection head.

[0029] Figure 6 This is a schematic diagram of the structure of the second driving mechanism in the embodiments of this application.

[0030] Figure 7 This is a cross-sectional view used in the embodiments of this application to illustrate the internal structure of the second detection head.

[0031] Figure 8 This is a schematic diagram of the structure of the verification component in an embodiment of this application.

[0032] Explanation of reference numerals in the attached drawings: 1. Body; 11. First drive mechanism; 2. First detection head; 21. First cylinder; 211. Return spring; 22. First sensor; 23. Push block; 24. Press block; 25. First cylinder; 3. Second detection head; 31. Second cylinder; 311. Extension rod; 312. Counterweight; 32. Second cylinder; 33. Pull rod; 331. Pull ring; 34. Rotating frame; 35. Contact head; 36. Compression spring; 37. Second sensor; 4. Third detection head; 5. Second drive mechanism; 51. Lateral drive assembly; 511. Moving stage; 512. Lateral motor; 513. Lateral screw. 514. Moving seat; 515. Fixed seat; 52. Longitudinal drive assembly; 521. Longitudinal motor; 522. Drive gear; 523. Fixed rack; 6. Conveying mechanism; 61. Conveying channel; 62. Transfer channel; 621. Rotating table; 622. Transfer lifting component; 63. Inspection table; 631. Positioning assembly; 6311. Contact block; 6312. Positioning column; 6313. Lifting column; 6314. Lifting platform; 6315. Lifting hydraulic cylinder; 64. Conveying roller; 65. Conveying motor; 7. Air blowing plate; 8. Calibration assembly; 81. First ring gauge; 82. Second ring gauge; 83. Third ring gauge. Detailed Implementation

[0033] The following is in conjunction with the appendix Figures 1-8 This application will be described in further detail.

[0034] This application discloses a fully automated automotive engine cylinder block testing device. (Refer to...) Figure 1The fully automatic automotive engine cylinder block testing equipment includes a body 1, on which are arranged a vertically arranged first testing head 2, a first drive mechanism 11 for driving the first testing head 2 to move, a horizontally arranged second testing head 3, a horizontally arranged third testing head 4, a second drive mechanism 5 for driving the second testing head 3 and the third testing head to move, and a conveying mechanism 6 for conveying the engine cylinder block.

[0035] The engine block is transported to the testing station by the conveying mechanism 6. The first testing head 2 is driven by the first driving mechanism 11 to detect the inner diameter of the top wall of the engine block. Then, the second testing head 3 and the third testing head 4 are driven by the second driving mechanism 5 to detect the inner diameter of the side wall of the engine block. Finally, the engine block is transported away, thus achieving the effect of automatically detecting the inner diameter of the engine block.

[0036] Reference Figure 2 The conveying mechanism 6 includes a conveying channel 61, a transfer channel 62, and a testing platform 63. The testing platform 63 is perpendicular to the conveying channel 61, and the transfer channel 62 is located between the conveying channel 61 and the testing platform 63. Conveying rollers 64 and conveying motors 65 that drive the conveying rollers 64 are all installed on the conveying channel 61, the transfer channel 62, and the testing platform 63. A rotating platform 621 and a transfer lifting component 622 are installed on the transfer channel 62. The transfer lifting component 622 is a hydraulic cylinder used to raise the engine block.

[0037] Reference Figure 3 The testing platform 63 is equipped with a positioning assembly 631, which includes a contact block 6311, a positioning post 6312, a lifting post 6313, a lifting platform 6314, and a lifting hydraulic cylinder 6315. The contact block 6311 is located at the end of the testing platform 63. The lifting hydraulic cylinder 6315 is installed at the bottom of the testing platform 63. The lifting platform 6314 is mounted on the output shaft of the lifting hydraulic cylinder 6315. Several positioning posts 6312 and lifting posts 6313 are provided, and all are bolted to the lifting platform 6314. The height of the positioning post 6312 is greater than the height of the lifting post 6313. Positioning holes are provided at the bottom of the engine housing.

[0038] During transport, the conveying channel 61 drives the conveying roller 64 to rotate via the conveying motor 65, moving the engine block onto the transfer channel 62. The transfer lifting component 622 raises the engine block, and the rotating table 621 turns it, transporting the engine block onto the testing table 63 until the engine block contacts the contact block 6311. Then, the lifting hydraulic cylinder 6315 is activated, and the lifting table 6314 rises, driving the lifting column 6313 and the positioning column 6312 to rise. The top of the positioning column 6312 is inserted into the positioning hole at the bottom of the engine block, and the lifting column 6313 lifts the bottom wall of the engine block, achieving the effect of positioning the engine block before testing.

[0039] Reference Figure 4 and Figure 5 The first drive mechanism 11 has both horizontal and vertical driving directions, both driven by a motor and a screw. The first detection head 2 includes a first cylinder 21, a first sensor 22, a push block 23, a pressure block 24, and a first cylinder 25. The first cylinder 21 is installed on the moving end of the first drive mechanism 11, and a fixed plate is fixedly connected inside the first cylinder 21. The first cylinder 25 is vertically installed on the fixed plate, and the pressure block 24 is bolted to the moving end of the first cylinder 25. A pressure ring surface is provided at the bottom of the pressure block 24.

[0040] Reference Figure 5 The surface of the first cylinder 21 has several detection windows; in this embodiment, four are used as an example. Four push blocks 23 are provided, each corresponding to a detection window. The push blocks 23 slide within the first cylinder 21, and each push block 23 has a pushing inclined surface at its end, which engages with the pressure ring surface. A return spring 211 is installed between the push blocks 23 and the first cylinder 21. A locking block is provided at the bottom of the first sensor 22, and the locking block is connected to the first cylinder 21 by bolts. The first sensor 22 is located between the locking block and the first cylinder 21, and its detection end passes through the push block 23. In the initial state, the push block 23 is subjected to the force of the return spring 211, and the detection end of the first sensor 22 is located inside the detection window.

[0041] Reference Figure 5 To ensure the accuracy of the test, an air blowing plate 7 is fixedly connected to the outlet end of the first cylinder 21. The surface of the air blowing plate 7 is provided with several air holes, and an air head is provided on the air blowing plate 7, which is connected to an external air source.

[0042] When detecting the inner hole of the top wall of the engine cylinder, the first cylinder 21 moves through the first drive mechanism 11 until the first cylinder 21 enters the inner hole of the top wall of the engine cylinder, the first cylinder 25 is activated, the pressure block 24 descends, driving the push block 23 to move, so that the detection end of the first sensor 22 moves out of the detection window and touches the hole wall of the inner hole of the top wall of the engine cylinder, and performs multiple detections in the vertical direction to achieve the effect of automatically and intermittently detecting the size of the inner hole of the top wall of the engine cylinder.

[0043] Reference Figure 6 The second drive mechanism 5 includes a transverse drive assembly 51 and a longitudinal drive assembly 52. ​​The transverse drive assembly 51 includes a moving table 511, a transverse motor 512, a transverse screw 513, a moving base 514, and a fixed base 515. The longitudinal drive assembly 52 includes a longitudinal motor 521, a drive gear 522, and a fixed rack 523. The moving table 511 is longitudinally slidably fitted onto the machine body 1. The fixed rack 523 is bolted to the machine body 1 and is parallel to the moving direction of the moving table 511. The longitudinal motor 521 is vertically mounted on the moving table 511. The drive gear 522 is fixedly connected to the output shaft of the longitudinal motor 521 and meshes with the fixed rack 523.

[0044] Reference Figure 6 A fixed base 515 is fixedly connected to the end of a movable platform 511. A movable base 514 is slidably fitted onto the movable platform 511, with the sliding direction perpendicular to the moving direction of the movable platform 511. A transverse screw 513 is rotatably connected to the movable platform 511 and parallel to the moving direction of the movable base 514. The movable base 514 and the transverse screw 513 are threadedly fitted. A transverse motor 512 is mounted on the movable platform 511 and coaxially connected to the transverse screw 513.

[0045] Reference Figure 6 and Figure 7 The second detection head 3 includes a second cylinder 31, a second cylinder 32, a pull rod 33, a rotating frame 34, a contact head 35, a compression spring 36, and a second sensor 37. An extension rod 311 is fixedly connected to the second cylinder 31. The extension rod 311 is mounted on the movable seat 514, with one end passing through the fixed seat 515. Several counterweights 312 are installed at the other end of the extension rod 311. The counterweights 312 are used to ensure that the second cylinder 31 remains horizontal when it moves.

[0046] Reference Figure 7 The second cylinder 31 is provided with several detection ports; in this embodiment, four are used as an example. A rotating frame 34 is rotatably connected to the detection ports. The rotating frame 34 is provided with three fixed rods. An abutment head 35 is installed at the end of one of the fixed rods, and a compression spring 36 is installed between the second cylinder 31 and one of the fixed rods. A second sensor 37 is installed inside the second cylinder 31, with its detection end abutting against the remaining fixed rod.

[0047] Reference Figure 7 The second cylinder 32 is installed inside the second cylinder 31. A pull rod 33 is slidably fitted onto the second cylinder 31 and coaxially connected to the output shaft of the second cylinder 32. A pull ring 331 is installed at the end of the pull rod 33, and a fixed rod cooperating with the second sensor 37 is located on the moving path of the pull ring 331. The structure of the third detection head 4 is the same as that of the second detection head 3, but the diameter of the third detection head 4 is smaller than that of the second detection head 3. In the initial state, the pull ring 331 abuts against the fixed rod, and the contact head 35 is located inside the detection port. The same structure is set on the third detection head 4. An air blowing plate 7 is also set at the outlet end of the second cylinder 31, and the third detection head 4 is set thereas as well. Both the first sensor 22 and the second sensor 37 are displacement sensors.

[0048] During testing, the longitudinal motor 521 is started, causing the drive gear 522 to rotate and move the moving table 511 to the designated position. The transverse motor 512 is started, causing the transverse screw 513 to rotate and the moving seat 514 to move, moving the second detection head 3 to the designated position inside the inner hole of the engine cylinder side wall. The second cylinder 32 is started, and the pull ring 331 moves. Under the force of the compression spring 36, the rotating frame 34 rotates, causing the contact head 35 to move and move out of the detection port until it touches the inner hole wall of the engine cylinder side wall. Then, in conjunction with the transverse drive assembly 51, multiple intermittent measurements are taken in the horizontal direction to achieve the effect of automatically measuring the diameter of the inner hole of the engine cylinder side wall.

[0049] Reference Figure 1 , Figure 4 and Figure 8 To ensure testing accuracy, a calibration component 8 is provided on the machine body 1. The calibration component 8 includes a first ring gauge 81, a second ring gauge 82, and a third ring gauge 83. A mounting bracket is provided on the machine body 1, and a push plate is slidably fitted onto the mounting bracket. A push-out cylinder is provided between the mounting bracket and the push plate. The first ring gauge 81 is mounted on the push plate, and the axis of the first ring gauge 81 is aligned with the axis of the first detection head 2. Similarly, the second ring gauge 82 and the third ring gauge 83 are provided, and they are mounted on the same push plate.

[0050] During the zeroing process, the cylinder is ejected, the push plate moves, and the first ring gauge 81 moves to a designated position. The first drive mechanism 11 then lowers the first detection head 2 until the detection end of the first sensor 22 contacts the inner wall of the first ring gauge 81. This achieves the zeroing of the dimensional data at the detection end of the first sensor 22, enabling the measurement of the engine cylinder bore size using the first ring gauge 81 as the dimensional reference. The second detection head 3 and the third detection head 4 are zeroed in the same manner.

[0051] The implementation principle of a fully automatic automotive engine cylinder block testing device according to an embodiment of this application is as follows: During testing, the engine cylinder block is placed on the conveying channel 61, and then moved to the transfer channel 62. The engine cylinder block is lifted out by the transfer jack, and after being turned by the rotating table 621, the engine cylinder block is transported to the testing table 63. The lifting hydraulic cylinder 6315 is activated, which drives the lifting column 6313 and the positioning column 6312 to rise. The positioning column 6312 restricts the position of the engine cylinder block, and the lifting column 6313 lifts the bottom wall of the engine cylinder block. Then, the first cylinder 21 is moved into the inner hole of the top wall of the engine cylinder block by the first drive mechanism 11. The first cylinder 25 is activated, the pressure block 24 descends, and drives the push block 23 to move, so that the detection end of the first sensor 22 moves until it touches the surface of the inner hole of the top wall of the engine cylinder block. Then, the detection end of the first sensor 22 is reset by the return spring 211. The end is reset, and multiple vertical detections are performed to measure the size of the inner hole of the top wall of the engine cylinder block. The longitudinal motor 521 is started, which moves the moving table 511 to the designated position. The transverse motor 512 is started, the transverse screw 513 rotates, the moving seat 514 moves, and the extension rod 311 moves, which moves the second detection head 3 to the designated position inside the inner hole of the side wall of the engine cylinder block. The second cylinder 32 is started, the pull ring 331 moves, and the rotating frame 34 moves the contact head 35 through the force of the compression spring 36, and moves it out of the detection port until it touches the surface of the inner hole of the side wall of the engine cylinder block. Then the contact head 35 is reset by the pull ring 331. In this way, the second sensor 37 performs multiple horizontal detections. Similarly, the third detection head 4 detects the diameter of other inner holes in the side wall of the engine cylinder block. Finally, the engine cylinder block is transported to the designated position by the conveying mechanism 6, realizing the effect of automatically detecting the diameter of the inner hole of the side wall of the engine cylinder block.

[0052] Through the cooperation of components such as the first cylinder 25, pressure block 24, push block 23, first sensor 22 and return spring 211, the detection end of the first sensor 22 is moved out of the detection window at a designated position to detect the inner diameter of the hole by intermittent contact. Compared with the prior art, this reduces the possibility of wear on the detection end of the first sensor 22 and improves the detection accuracy. It also reduces the possibility of scratches on the surface of the hole wall and ensures the roughness of the inner hole surface of the engine cylinder as much as possible.

[0053] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A fully automatic automobile engine block inspection apparatus, characterized by: The utility model provides a detection device for engine cylinder, including body (1), first detection head (2) of vertical setting, transversely arranged second detection head (3) and third detection head (4) are provided on the body (1), first drive mechanism (11) of driving the first detection head (2) moves and the second drive mechanism (5) of driving the second detection head (3) are provided on the body (1), conveying mechanism (6) of driving engine cylinder body is provided on the body (1), the first detection head (2) includes first cylinder (21), first sensor (22), push block (23), pressure block (24) and first cylinder (25), first cylinder (21) is installed in the mobile end of first drive mechanism (11), first cylinder (25) is installed in first cylinder (21), pressure block (24) is connected on the output shaft of first cylinder (25), pressure ring surface is provided on pressure block (24), the push block (23) is set up several, and all are slidably fitted in first cylinder (21), a plurality of detection windows are provided on first cylinder (21), the push block (23) corresponds with the detection window, the push block (23) end is provided with push inclined plane, the push inclined plane is engaged with the pressure ring surface, first sensor (22) is connected in first cylinder (21), and is passed in push block (23), reset spring (211) is provided between push block (23) and first cylinder (21), and in initial state, the detection end of first sensor (22) is located in the detection window.

2. The fully automatic automobile engine block inspection apparatus according to claim 1, characterized by: Second detection head (3) includes second cylinder (31), second cylinder (32), pull rod (33), rotating frame (34), contact head (35), compression spring (36) and second sensor (37), second cylinder (31) is installed in the mobile end of second drive mechanism (5), a plurality of detection ports are provided on second cylinder (31), rotating frame (34) is rotatably connected in the detection port, contact head (35) is connected in one end of rotating frame (34), compression spring (36) is connected in one end of rotating frame (34) and second cylinder (31), second sensor (37) is installed in second cylinder (31), and the detection end of second sensor (37) contacts the other end of rotating frame (34), second cylinder (32) is installed in second cylinder (31), pull rod (33) is connected on the output shaft of second cylinder (32), and the end of pull rod (33) is provided with pull ring (331), one end of rotating frame (34) is located on the movement path of pull ring (331), the structure of third detection head (4) is consistent with the structure of second detection head (3).

3. The fully automatic automobile engine block inspection apparatus according to claim 2, characterized by: The end of first detection head (2), second detection head (3) and third detection head (4) is connected with the air blowing plate (7), a plurality of air holes are opened on the surface of air blowing plate (7), and the air head of air blowing plate (7) is provided with the air hole, and the air head is communicated with external air source.

4. The fully automated automotive engine block inspection apparatus of claim 1, wherein: The machine body (1) is provided with a checking assembly (8), the checking assembly (8) comprises a first ring gauge (81), a second ring gauge (82) and a third ring gauge (83), the machine body (1) is provided with a mounting rack, the mounting rack is slidably connected with a push plate, a push-out cylinder is arranged between the mounting rack and the push plate, the axis of the first ring gauge (81) is arranged in the same direction as the axis of the first detection head (2), and the second ring gauge (82) and the third ring gauge (83) are arranged in the same way, the first ring gauge (81) is used for zero setting of the first detection head (2), the second ring gauge (82) is used for zero setting of the second detection head (3), and the third ring gauge (83) is used for zero setting of the third detection head (4).

5. The fully automated automotive engine block inspection apparatus of claim 1, wherein: The conveying mechanism (6) comprises a conveying channel (61), a transfer channel (62) and a detection table (63), the conveying channel (61), the detection table (63) and the transfer channel (62) are all arranged on the machine body (1), the detection table (63) is perpendicular to the conveying channel (61), the transfer channel (62) is located between the conveying channel (61) and the detection table (63), the conveying channel (61), the detection table (63) and the transfer channel (62) are all provided with conveying rollers (64) and conveying motors (65), the conveying motor (65) drives the conveying roller (64) to rotate, the transfer channel (62) is provided with a rotating table (621) for changing the conveying direction of the engine block and a transfer jacking member (622) for lifting the engine block, and the detection table (63) is provided with a positioning assembly (631) for limiting the movement of the engine block.

6. The fully automated automotive engine block inspection apparatus according to claim 5, characterized by: The positioning assembly (631) comprises a contact block (6311), a positioning column (6312), a jacking column (6313), a jacking table (6314) and a jacking hydraulic cylinder (6315), the jacking hydraulic cylinder (6315) is vertically connected to the detection table (63), the jacking table (6314) is connected to the output shaft of the jacking hydraulic cylinder (6315), the positioning column (6312) and the jacking column (6313) are both provided with a plurality of columns and are both connected to the jacking table (6314), the height of the positioning column (6312) is greater than the height of the jacking column (6313), the engine block bottom wall is provided with a positioning hole, and during positioning, the top end of the positioning column (6312) is inserted into the positioning hole on the engine block bottom wall, and the jacking column (6313) contacts the bottom wall of the engine block.

7. The fully automated automotive engine block inspection apparatus of claim 1, wherein: The second driving mechanism (5) comprises a transverse driving assembly (51) and a longitudinal driving assembly (52) for driving the second detection head (3) to move longitudinally, the transverse driving assembly (51) comprises a moving table (511), a transverse motor (512), a transverse screw (513), a moving seat (514) and a fixed seat (515), the moving table (511) is connected to the moving end of the longitudinal driving assembly (52), the fixed seat (515) is connected to the end of the moving table (511), the moving seat (514) is slidingly fitted on the moving table (511), the transverse screw (513) is rotationally connected to the moving table (511) and is in threaded connection with the moving seat (514), the transverse motor (512) is mounted on the moving table (511) and is coaxially connected with the transverse screw (513), and the second detection head (3) is mounted on the moving seat (514) and penetrates through the fixed seat (515), and the third detection head (4) is arranged in the same way.

8. The fully automated automotive engine block inspection apparatus according to claim 7, characterized by: The longitudinal driving assembly (52) comprises a longitudinal motor (521), a driving gear (522) and a fixed rack (523), the fixed rack (523) is connected to the machine body (1) and is perpendicular to the transverse screw (513), the moving table (511) is slidingly fitted on the machine body (1) and the sliding direction is perpendicular to the transverse screw (513), and the longitudinal motor (521) is mounted on the moving table (511), the driving gear (522) is connected to the output shaft of the longitudinal motor (521) and is in meshing connection with the fixed rack (523).

9. The fully automated automotive engine block inspection apparatus of claim 7, wherein: The second detection head (3) is connected with an extension rod (311), the extension rod (311) penetrates through the moving seat (514) and the fixed seat (515), and the end of the extension rod (311) is connected with a plurality of counterweights (312).

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