Engine cylinder cover strength detection device and detection method

Abstract

The invention discloses an engine cylinder cover strength detection device and method, and relates to the field of engine cylinder cover air tightness detection.The engine cylinder cover strength detection device comprises an equipment base and an upper detection die, two first transfer mechanisms are arranged at the top of the equipment base, and each first transfer mechanism comprises two lower detection dies; second transferring mechanisms are arranged at the positions, located at the two ends of the two first transferring mechanisms, of the top of the equipment base, and cylinder cover clamps used for clamping cylinder covers are installed on the second transferring mechanisms. When two groups of detection lower dies of one group of first transfer mechanism synchronously operate to one end for feeding and discharging, one group of second transfer mechanism and the two groups of detection lower dies finish butt joint for feeding and discharging, and similarly, two groups of detection lower dies of the other group of first transfer mechanism synchronously operate to one end in the opposite direction for feeding and discharging; in this way, the two sets of first transferring mechanisms and the two sets of second transferring mechanisms alternately operate in a reciprocating mode, and the feeding and discharging work of cylinder cover air tightness detection can be rapidly achieved.

Description

Technical Field

[0001] The present invention relates to the field of engine cylinder head air tightness detection, and in particular to an engine cylinder head strength detection device and detection method. Background Art

[0002] The engine cylinder head is a very important component in the internal combustion engine. It is located above the engine cylinder, enclosing the cylinder and forming the combustion chamber. Its main function is to accommodate and support various components related to the engine cylinder, and ensure the closure of the combustion chamber and good control of gas flow.

[0003] During the manufacturing process, the engine cylinder head needs to undergo a series of strength tests to meet the standards, mainly including static strength test, fatigue test, thermal shock test, sealing test and stress analysis. Among them, the air tightness test of the engine cylinder head is a key step to ensure the sealing performance between the cylinder head and the cylinder to prevent gas or liquid leakage. The commonly used method is the air pressure leak detection method, which applies air pressure to the inside of the cylinder head (usually through the air inlet or exhaust port), and then detects whether the cylinder head is leaking. First, the air inlet or exhaust port of the cylinder head needs to be closed, and then the gas source is injected into the interior of the cylinder head. A pressure sensor or pressure gauge is used to monitor the gas pressure and detect whether there is a pressure drop in the cylinder head to determine the sealing of the cylinder head.

[0004] At present, the commonly used air tightness testing equipment for engine cylinder heads usually adopts the method of pressing the upper and lower testing molds. The engine cylinder head is placed and clamped on the lower testing mold by humans or robotic arms. Then the upper mold descends to press the cylinder head tightly. At the same time, multiple sets of sealing components for closing the cylinder head intake and exhaust ports extend from the side of the upper mold. The upper mold is connected to an air source for injecting air pressure. After a period of air pressure monitoring, the computer will automatically record the air tightness data of the cylinder head. The above-mentioned small cylinder head air tightness testing equipment is suitable for batch sampling. When the number of engine cylinder heads to be tested is large, in order to improve the testing efficiency, we need to improve the efficiency of cylinder head loading and unloading while ensuring that the equipment performs air tightness testing synchronously as much as possible. Summary of the Invention

[0005] Based on this, the purpose of the present invention is to provide an engine cylinder head strength detection device and detection method to solve the technical problems mentioned in the above background.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an engine cylinder head strength testing device, comprising a device base, a guide column, a device top plate, a telescopic assembly, a lifting plate and a testing upper mold, two groups of first transfer mechanisms are provided on the top of the device base, the first transfer mechanism comprises a first threaded rod rotatably connected to the top of the device base, one end of the first threaded rod is connected to a first driving assembly, the other end of the first threaded rod is provided with a first bevel gear, the external thread of the first threaded rod is connected to two groups of testing lower molds, the two groups of testing lower molds of the first transfer mechanisms are symmetrically arranged about the center of the device base, the top of the device base is located at both ends of the two groups of first transfer mechanisms, and the second transfer mechanism is provided. The second moving mechanism includes a second threaded rod rotatably connected to the top of the equipment base, a second bevel gear is provided at one end of the second threaded rod, and the second bevel gears at the ends of the two groups of second threaded rods are respectively meshed with the first bevel gears at the ends of the two groups of first threaded rods. The external thread of the second threaded rod is connected to the movable base, a fixed plate is provided above the movable base, a second drive assembly is provided on the top of the fixed plate, and a third threaded rod is provided at the bottom of the fixed plate. The top of the movable base is rotatably connected to a threaded sleeve, the threaded sleeve and the third threaded rod are threadedly connected, and the threaded sleeve is connected to the third drive assembly. A carrying frame is provided on the top of the second drive assembly, and cylinder head clamps for clamping the cylinder head are provided at both ends of the carrying frame.

[0007] By adopting the above technical solution, by setting up two groups of first transfer mechanisms and two groups of second transfer mechanisms to work synchronously and coordinately, the efficiency of cylinder head air tightness detection loading and unloading can be improved. The first transfer mechanism includes two groups of detection lower molds. The two groups of detection lower molds of the same group of first transfer mechanisms run in the same direction, while the detection lower molds of the two groups of first transfer mechanisms transport the cylinder head in opposite directions for detection. The two groups of second transfer mechanisms are respectively arranged at both ends of the two groups of first transfer mechanisms. That is, when the two groups of detection lower molds of one group of first transfer mechanisms run synchronously to one end where loading and unloading is required, one group of second transfer mechanisms completes the docking loading and unloading work with it. Similarly, the two groups of detection lower molds of the other group of first transfer mechanisms will run synchronously to the opposite direction where loading and unloading is required, and the other group of second transfer mechanisms completes the docking loading and unloading work with it. In this way, the two groups of first transfer mechanisms and the two groups of second transfer mechanisms run back and forth alternately, which can quickly realize the loading and unloading work of cylinder head air tightness detection.

[0008] The present invention is further configured such that the first transfer mechanism further includes two sets of first position-limiting guide rails installed on the top of the equipment base, and the two sets of first position-limiting guide rails and the detection lower mold are movably installed.

[0009] Preferably, the first limiting guide rail is provided to make the movement of the lower mold more stable.

[0010] The present invention is further configured such that the second transfer mechanism further includes two sets of second position-limiting guide rails installed on the top of the equipment base, and the two sets of second position-limiting guide rails and the movable base are movably installed.

[0011] Preferably, the second limiting guide rail is provided to make the movement of the movable base more stable.

[0012] The present invention is further configured such that a plurality of guide rods are provided at the bottom of the fixed plate, and the plurality of guide rods are movably installed on the movable base.

[0013] Preferably, multiple sets of guide rods are provided to make the lifting and lowering of the fixed plate more stable.

[0014] The present invention is further configured such that the cylinder head clamp includes a mounting plate connected to the carrier frame, and the top of the mounting plate is rotatably connected to a forward and reverse threaded rod, and the forward and reverse threaded rod is connected to a fourth drive assembly, the external threads of the forward and reverse threaded rod are connected to two groups of fixing frames, and the two groups of fixing frames are symmetrically arranged, and the two groups of fixing frames and the mounting plate are movably installed by setting a third limiting guide rail.

[0015] Preferably, the cylinder head can be fixedly grasped by arranging two sets of fixing frames driven by the fourth driving assembly in the cylinder head clamp.

[0016] The present invention is further configured such that two groups of movable frames are movably installed on the bottom of the mounting plate by setting a fourth limiting guide rail, and the two groups of movable frames are symmetrically arranged, two groups of fixing rods are arranged on the sides of the two groups of movable frames, and springs are sleeved on the outside of the two groups of fixing rods, the two groups of fixing rods and the mounting plate are movably penetrated, and support frames are arranged at the ends of the two groups of fixed rods.

[0017] Preferably, by providing two sets of support brackets, the cylinder head can be protected to prevent the cylinder head from falling and being damaged when the two sets of fixing brackets fail.

[0018] The present invention is further configured such that linkage mechanisms are provided on both sides of the top plate of the equipment, the linkage mechanisms include a first connecting frame, and the bottom of the first connecting frame is rotatably connected to two groups of second connecting frames, and the bottoms of the two groups of second connecting frames are provided with multiple groups of guide blocks.

[0019] Preferably, a linkage mechanism is provided to cooperate with the cylinder head clamp so that the two groups of support brackets of the cylinder head clamp are automatically expanded and contracted when the height of the cylinder head clamp is adjusted.

[0020] The present invention is further configured such that the guide blocks are each provided with a guide groove matching the movable frame.

[0021] Preferably, a guide groove is provided in the guide block so that when the movable frame of the cylinder head clamp is raised and engaged with the guide groove, the two sets of supporting frames can be driven closer to each other to protect the cylinder head, and the movable frame is engaged inside the guide groove, so rotating the two sets of cylinder head clamps will also drive the second connecting frame to rotate.

[0022] A method for detecting an engine cylinder head strength detection device comprises the following steps:

[0023] S1: First, the telescopic assembly is activated to push the lifting plate downward, so that the two sets of upper detection molds and the lower detection molds of the two first transfer mechanisms located directly below the upper detection molds are docked, and the cylinder head in the lower detection mold is tested for air tightness;

[0024] S2: At the same time, the two sets of first transfer mechanisms and the other set of inspection lower molds are respectively close to the two sets of second transfer mechanisms, and the third drive assembly is activated to drive the carrier frame to descend, so that the cylinder head clamps at both ends of the carrier frame are lowered to the grabbing height, and the two sets of cylinder head clamps are activated. The two sets of fixed frames of one set of cylinder head clamps clamp and fix the inspected cylinder head in the inspection lower mold, and the two sets of fixed frames of the other set of cylinder head clamps clamp and fix the cylinder head to be inspected in the conveying system;

[0025] S3: Next, the third drive component is controlled to push the carrier to rise, so that the two sets of cylinder head clamps are raised. The support frames of the cylinder head clamps are guided by the guide grooves and move closer to each other. The cylinder head clamped by the user protection bracket is prevented from slipping. The second drive component is started to drive the carrier to rotate 180°, switching the positions of the two sets of cylinder head clamps. Then, the cylinder head clamps are released to complete the loading and unloading of the mold under inspection. The cylinder head that has completed the inspection is transported to the designated area by the conveying system.

[0026] In summary, the present invention mainly has the following beneficial effects:

[0027] 1. The present invention can improve the efficiency of cylinder head air tightness detection and loading and unloading by arranging two groups of first transfer mechanisms and two groups of second transfer mechanisms to work synchronously and coordinately. The first transfer mechanism includes two groups of detection lower molds. The two groups of detection lower molds of the same group of first transfer mechanisms run in the same direction, while the detection lower molds of the two groups of first transfer mechanisms transport the cylinder head in opposite directions for detection. The two groups of second transfer mechanisms are respectively arranged at both ends of the two groups of first transfer mechanisms. That is, when the two groups of detection lower molds of one group of first transfer mechanisms synchronously run to one end where loading and unloading is required, one group of second transfer mechanisms completes the docking and loading and unloading work with it. Similarly, the two groups of detection lower molds of the other group of first transfer mechanisms will synchronously run to the opposite direction where one end where loading and unloading is required, and the other group of second transfer mechanisms completes the docking and loading and unloading work with it. In this way, the two groups of first transfer mechanisms and the two groups of second transfer mechanisms run back and forth alternately, which can quickly realize the loading and unloading work of cylinder head air tightness detection.

[0028] At the same time, for the two groups of inspection lower molds in the same group of first transfer mechanisms, when one group of inspection lower molds approaches the second transfer mechanism for loading and unloading docking work, the other group of inspection lower molds in the group of first transfer mechanisms will run to the bottom of the inspection upper mold. At this time, the cylinder heads in the group of inspection lower molds that have not been inspected will carry out air tightness testing simultaneously. That is, the cylinder heads in the two groups of inspection lower molds in the same group of first transfer mechanisms perform air tightness testing and loading and unloading work respectively. For the first transfer mechanism, the air tightness testing and loading and unloading are carried out simultaneously, which can further improve the efficiency of the cylinder head air tightness testing work.

[0029] 2. The present invention can protect the cylinder head while transferring it by setting a cylinder head clamp, thereby reducing the risk of the cylinder head falling. The cylinder head clamp includes two groups of fixing frames for clamping and fixing the cylinder head, and also includes two groups of supporting frames for protecting the cylinder head. When the fixing frames of the cylinder head clamp clamp and fix the cylinder head for transfer, the supporting frames will extend from the bottom of the cylinder head clamp to prevent the cylinder head from falling to the ground and causing damage when the clamping of the fixing frames fails. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 This is a schematic diagram of the installation of the equipment top plate, lifting plate, telescopic assembly and detection upper mold of the present invention;

[0032] Figure 3 Schematic diagram of the structure of the first transfer mechanism of the present invention;

[0033] Figure 4 This is a schematic diagram of the installation of the second transplanting mechanism and the cylinder head clamp of the present invention;

[0034] Figure 5 This is a schematic diagram of the installation of the mobile base and the fixed plate of the present invention;

[0035] Figure 6 Schematic diagram of the cylinder head clamp structure of the present invention;

[0036] Figure 7 This is a schematic diagram of the distribution of the fixing frame and the supporting frame of the present invention;

[0037] Figure 8 It is a schematic diagram of the linkage mechanism structure of the present invention;

[0038] Figure 9 This is a schematic diagram of the distribution of guide blocks and guide grooves of the present invention.

[0039] Description of reference numerals:

[0040] 1. Equipment base; 2. Guide column; 3. Equipment top plate; 4. Telescopic assembly; 5. Lifting plate; 6. Upper mold for inspection; 7. First transfer mechanism; 701. First threaded rod; 702. First drive assembly; 703. First position-limiting guide rail; 704. Lower mold for inspection; 8. First bevel gear; 9. Second transfer mechanism; 901. Second threaded rod; 902. Second position-limiting guide rail; 903. Moving base; 904. Guide rod; 905. Fixed plate; 906. Second drive assembly; 907. Third threaded rod; 908. Threaded sleeve ;909, third drive assembly;910, carrier frame;10, second bevel gear;11, cylinder head clamp;1101, mounting plate;1102, forward and reverse threaded rods;1103, fourth drive assembly;1104, fixed frame;1105, third limiting guide rail;1106, fourth limiting guide rail;1107, movable frame;1108, fixed rod;1109, spring;1110, supporting frame;12, linkage mechanism;1201, first connecting frame;1202, second connecting frame;1203, guide block;1204, guide groove. DETAILED DESCRIPTION

[0041] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be understood as limiting the present invention.

[0042] The following describes an embodiment of the present invention based on its overall structure.

[0043] See also Figures 1-9 , an engine cylinder head strength testing device, including an equipment base 1, a guide column 2, an equipment top plate 3, a telescopic component 4, a lifting plate 5 and an upper testing mold 6, two sets of first transfer mechanisms 7 are provided on the top of the equipment base 1, the first transfer mechanism 7 includes a first threaded rod 701 rotatably connected to the top of the equipment base 1, one end of the first threaded rod 701 is connected to a first driving component 702, the first driving component 702 is used to drive the first threaded rod 701 to rotate, the other end of the first threaded rod 701 is provided with a first bevel gear 8, the external thread of the first threaded rod 701 is connected to two sets of testing lower molds 704, the testing lower mold 704 is used to engage the cylinder head, and the two sets of testing lower molds 704 of the first transfer mechanisms 7 are symmetrically arranged about the center of the equipment base 1;

[0044] The top of the equipment base 1 is located at both ends of the two groups of first transfer mechanisms 7, and a second transfer mechanism 9 is provided. The second transfer mechanism 9 includes a second threaded rod 901 rotatably connected to the top of the equipment base 1. One end of the second threaded rod 901 is provided with a second bevel gear 10. The second bevel gears 10 at the ends of the two groups of second threaded rods 901 are respectively engaged with the first bevel gears 8 at the ends of the two groups of first threaded rods 701. When the first threaded rod 701 rotates, the second threaded rod 901 is also driven to rotate. The external thread of the second threaded rod 901 is connected to the mobile base 903. A fixed plate 905 is provided above the mobile base 903. The fixed plate 905 A second driving assembly 906 is provided on the top, and a third threaded rod 907 is provided on the bottom of the fixed plate 905. The top of the movable base 903 is rotatably connected to a threaded sleeve 908. The threaded sleeve 908 and the third threaded rod 907 are threadedly connected, and the threaded sleeve 908 is connected to the third driving assembly 909. The third driving assembly 909 is used to drive the threaded sleeve 908 to rotate. A supporting frame 910 is provided on the top of the second driving assembly 906. The second driving assembly 906 is used to drive the supporting frame 910 to rotate. Cylinder head clamps 11 for clamping the cylinder head are provided at both ends of the supporting frame 910. The cylinder head clamp 11 is used to grab the cylinder head.

[0045] In the above embodiment, please refer to Figure 3 The first transfer mechanism 7 also includes two sets of first limiting guide rails 703 installed on the top of the equipment base 1, and the two sets of first limiting guide rails 703 and the detection lower mold 704 are movably installed. By setting the first limiting guide rails 703, the movement of the detection lower mold 704 is more stable.

[0046] In the above embodiment, please refer to Figure 4 The second transfer mechanism 9 also includes two sets of second limiting guide rails 902 installed on the top of the equipment base 1, and the two sets of second limiting guide rails 902 and the movable base 903 are movably installed. By setting the second limiting guide rails 902, the movement of the movable base 903 is more stable.

[0047] In the above embodiment, please refer to Figure 5 A plurality of guide rods 904 are provided at the bottom of the fixed plate 905, and the plurality of guide rods 904 and the movable base 903 are movably installed. By providing the plurality of guide rods 904, the lifting and lowering of the fixed plate 905 is made more stable.

[0048] In the above embodiment, please refer to Figure 6The cylinder head clamp 11 includes a mounting plate 1101 connected to the carrier frame 910, and the top of the mounting plate 1101 is rotatably connected to a forward and reverse threaded rod 1102, and the forward and reverse threaded rod 1102 is connected to a fourth drive assembly 1103, and the external threads of the forward and reverse threaded rod 1102 are connected to two groups of fixing frames 1104, and the two groups of fixing frames 1104 are symmetrically arranged, and the two groups of fixing frames 1104 and the mounting plate 1101 are movably installed by setting a third limiting guide rail 1105. By setting two groups of fixing frames 1104 driven by the fourth drive assembly 1103 in the cylinder head clamp 11, the cylinder head can be fixed and grasped.

[0049] In the above embodiment, please refer to Figure 6 and Figure 7 The bottom of the mounting plate 1101 is movably mounted with two sets of movable frames 1107 by setting a fourth limiting guide rail 1106, and the two sets of movable frames 1107 are symmetrically arranged, and two sets of fixing rods 1108 are arranged on the sides of the two sets of movable frames 1107, and the outside of the two sets of fixing rods 1108 are sleeved with springs 1109, the two sets of fixing rods 1108 and the mounting plate 1101 are movably arranged through, and the ends of the two sets of fixing rods 1108 are provided with supporting brackets 1110. By setting two sets of supporting brackets 1110, the cylinder head can be protected to prevent the cylinder head from falling and being damaged when the two sets of fixing frames 1104 fail.

[0050] In the above embodiment, please refer to Figure 8 A linkage mechanism 12 is provided on both sides of the top plate 3 of the equipment. The linkage mechanism 12 includes a first connecting frame 1201, and the bottom of the first connecting frame 1201 is rotatably connected to two groups of second connecting frames 1202. The bottom of the two groups of second connecting frames 1202 are provided with multiple groups of guide blocks 1203. By setting the linkage mechanism 12 and the cylinder head clamp 11 to cooperate with each other, the two groups of supporting frames 1110 of the cylinder head clamp 11 are automatically opened and automatically contracted when the cylinder head clamp 11 is adjusted in height.

[0051] In the above embodiment, please refer to Figure 9 , multiple groups of guide blocks 1203 are provided with guide grooves 1204 that match the movable frame 1107. By opening the guide grooves 1204 in the guide blocks 1203, when the movable frame 1107 of the cylinder head clamp 11 is raised and engaged with the guide grooves 1204, the two groups of supporting frames 1110 can be driven to approach each other to facilitate protection of the cylinder head, and the movable frame 1107 is engaged inside the guide grooves 1204, so rotating the two groups of cylinder head clamps 11 will also drive the second connecting frame 1202 to rotate.

[0052] A method for detecting an engine cylinder head strength detection device comprises the following steps:

[0053] S1: First, the telescopic assembly 4 is activated to push the lifting plate 5 downward, so that the two sets of upper detection molds 6 and the lower detection molds 704 located directly below the upper detection molds 6 of the two sets of first transfer mechanisms 7 are docked, and the cylinder head in the lower detection mold 704 is tested for air tightness;

[0054] S2: At the same time, the two groups of first transfer mechanisms 7 and the other group of inspection lower molds 704 respectively approach the two groups of second transfer mechanisms 9, and the third drive assembly 909 is started to drive the carrier 910 to descend, so that the cylinder head clamps 11 at both ends of the carrier 910 are lowered to the grabbing height, and the two groups of cylinder head clamps 11 are started. The two groups of fixing frames 1104 of one group of cylinder head clamps 11 clamp and fix the cylinder head that has been inspected in the inspection lower mold 704, and the two groups of fixing frames 1104 of the other group of cylinder head clamps 11 clamp and fix the cylinder head to be inspected in the conveying system;

[0055] S3: Next, the third drive component 909 is controlled to push the carrier 910 to rise, so that the two groups of cylinder head clamps 11 are raised, and the supporting frames 1110 of the cylinder head clamps 11 are close to each other under the guidance of the guide groove 1204. The cylinder head clamped by the user protection fixing frame 1104 is prevented from slipping, and the second drive component 906 is started to drive the carrier 910 to rotate 180°, switching the positions of the two groups of cylinder head clamps 11, and then releasing the cylinder head clamp 11 to complete the loading and unloading work of the lower mold 704 for inspection, and the cylinder head that has completed the inspection is transported to the designated area by the conveying system.

[0056] The present invention is in specific operation: when the air tightness detection equipment in the present application is working, taking one group of the first transfer mechanism 7 and the second transfer mechanism 9 coordinating work as an example, from the perspective of the equipment operation process, the telescopic component 4 extends to push the lifting plate 5 down, so that the detection upper mold 6 and a group of detection lower molds 704 directly below it cooperate with each other to perform air tightness detection on the cylinder head in the group of detection lower molds 704. At the same time, the other group of detection lower molds 704 of the first transfer mechanism 7 is close to the position of the second transfer mechanism 9, and the cylinder head in the group of detection lower molds 704 has completed the air tightness detection work and needs to carry out the cylinder head loading and unloading work, and the third drive component 909 works to drive the screw The threaded sleeve 908 rotates, and then the third threaded rod 907 drives the fixed plate 905 to lower its height, so the second drive assembly 906 and the carrier frame 910 on the top of the fixed plate 905 will both drop in height, that is, the cylinder head clamps 11 at both ends of the carrier frame 910 drop to a height for grabbing the cylinder head. When the height of the cylinder head clamps 11 at both ends of the carrier frame 910 drops, the movable frame 1107 of the cylinder head clamp 11 will disengage from the guide groove 1204 of the guide block 1203, which will cause the two groups of support frames 1110 of the cylinder head clamp 11 to open under the resetting action of the spring 1109. The opening of the two groups of support frames 1110 will not interfere with the subsequent grabbing action of the two groups of fixed frames 1104.

[0057] For the cylinder head fixture 11 above the lower mold 704, the fourth drive assembly 1103 drives the forward and reverse threaded rods 1102 to rotate, and then the two sets of fixed frames 1104 are close to each other to clamp the cylinder head to be unloaded in the lower mold 704 for inspection. Similarly, the other set of cylinder head fixtures 11 will grab the cylinder head to be inspected in the conveying system. At this time, the third drive assembly 909 is started again to drive the fixed plate 905, the second drive assembly 906 and the supporting frame 910 to rise. According to the above, when the two sets of cylinder head fixtures 11 are raised, their movable frames 1107 will be embedded in the guide groove 1204, so that the two sets of supporting frames 111 of the cylinder head fixture 11 0 are close to each other, and the two groups of supporting frames 1110 are close to each other to protect the cylinder head from the bottom. At this time, the two groups of cylinder head clamps 11 are docked with the second connecting frame 1202, and the second driving assembly 906 is started to drive the supporting frame 910 to rotate 180°. Therefore, the two groups of cylinder head clamps 11 together with the second connecting frame 1202 on top thereof will rotate 180°, and the cylinder head that has completed the air tightness test in the lower mold 704 will be transferred away and a new cylinder head to be tested will be loaded on it. According to the same steps as above, the cylinder head clamps 11 can be loosened to complete the loading and unloading of the cylinder head. The conveying system is used to transport the cylinder heads to be tested and the cylinder heads that have completed the test.

[0058] For the two groups of inspection lower molds 704 in the first transfer mechanism 7, while the cylinder head in one group of inspection lower molds 704 is subjected to air tightness testing, the cylinder head in the other group of inspection lower molds 704 is subjected to loading and unloading work. Next, the two groups of inspection lower molds 704 of the first transfer mechanism 7 will synchronously move to the other side and complete the loading and unloading docking work with the other group of second transfer mechanism 9. The first drive component 702 drives the first threaded rod 701 to rotate, which can synchronously drive the two groups of inspection lower molds 704 to move. At the same time, the first threaded rod 701 will drive the second threaded rod 901 to rotate through the first bevel gear 8 and the second bevel gear 10, thereby driving the mobile base 903 and the structure installed on its top to run to one end of the other group of first transfer mechanisms 7. Similarly, the two groups of first transfer mechanisms 7 and the two groups of second transfer mechanisms 9 work synchronously and coordinately to form a complete workflow.

[0059] Although an embodiment of the present invention has been shown and described, this specific embodiment is merely an explanation of the present invention and is not a limitation of the invention. The specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiment without creative contribution as needed without departing from the principles and purpose of the present invention. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. An engine cylinder head strength testing device, comprising a device base (1), a guide column (2), a device top plate (3), a telescopic assembly (4), a lifting plate (5) and a testing upper mold (6), characterized in that: Two groups of first transfer mechanisms (7) are provided on the top of the device base (1), the first transfer mechanism (7) comprises a first threaded rod (701) rotatably connected to the top of the device base (1), one end of the first threaded rod (701) is connected to a first driving assembly (702), the other end of the first threaded rod (701) is provided with a first bevel gear (8), the external thread of the first threaded rod (701) is connected to two groups of detection lower molds (704), the detection lower molds (704) of the two groups of the first transfer mechanisms (7) are symmetrically arranged about the center of the device base (1), the top of the device base (1) is provided with a second transfer mechanism (9) at both ends of the two groups of first transfer mechanisms (7), the second transfer mechanism (9) comprises a second threaded rod (901) rotatably connected to the top of the device base (1), one end of the second threaded rod (901) is provided with a second bevel gear (10), the two The second bevel gear (10) at the end of the second threaded rod (901) is respectively meshed with the first bevel gears (8) at the end of the two groups of first threaded rods (701); the external thread of the second threaded rod (901) is connected to a movable base (903); a fixed plate (905) is provided above the movable base (903); a second driving assembly (906) is provided on the top of the fixed plate (905); and a third threaded rod (907) is provided at the bottom of the fixed plate (905); a threaded sleeve (908) is rotatably connected to the top of the movable base (903); the threaded sleeve (908) and the third threaded rod (907) are threadedly connected, and the threaded sleeve (908) is connected to the third driving assembly (909); a supporting frame (910) is provided on the top of the second driving assembly (906); and cylinder head clamps (11) for clamping the cylinder head are provided at both ends of the supporting frame (910).

2. The engine cylinder head strength detection device according to claim 1, characterized in that: The first transfer mechanism (7) further comprises two sets of first position-limiting guide rails (703) mounted on the top of the equipment base (1), and the two sets of first position-limiting guide rails (703) and the detection lower mold (704) are movably mounted.

3. The engine cylinder head strength detection device according to claim 2, characterized in that: The second transfer mechanism (9) further comprises two sets of second position-limiting guide rails (902) mounted on the top of the equipment base (1), and the two sets of second position-limiting guide rails (902) and the movable base (903) are movably mounted.

4. The engine cylinder head strength detection device according to claim 3, characterized in that: A plurality of guide rods (904) are provided at the bottom of the fixed plate (905), and the plurality of guide rods (904) and the movable base (903) are movably installed.

5. The engine cylinder head strength detection device according to claim 4, characterized in that: The cylinder head clamp (11) includes a mounting plate (1101) connected to a carrier frame (910), and the top of the mounting plate (1101) is rotatably connected to a forward and reverse threaded rod (1102), and the forward and reverse threaded rod (1102) is connected to a fourth drive assembly (1103), and the external threads of the forward and reverse threaded rod (1102) are connected to two groups of fixing frames (1104), and the two groups of fixing frames (1104) are symmetrically arranged, and the two groups of fixing frames (1104) and the mounting plate (1101) are movably installed by setting a third limiting guide rail (1105).

6. The engine cylinder head strength detection device according to claim 5, characterized in that: The bottom of the mounting plate (1101) is movably mounted with two groups of movable frames (1107) by setting a fourth limiting guide rail (1106), and the two groups of movable frames (1107) are symmetrically arranged. The sides of the two groups of movable frames (1107) are each provided with two groups of fixed rods (1108), and the exteriors of the two groups of fixed rods (1108) are each sleeved with springs (1109). The two groups of fixed rods (1108) and the mounting plate (1101) are movably interwoven, and the ends of the two groups of fixed rods (1108) are provided with supporting frames (1110).

7. The engine cylinder head strength detection device according to claim 6, characterized in that: Both sides of the top plate (3) of the device are provided with linkage mechanisms (12), the linkage mechanisms (12) include a first connecting frame (1201), and the bottom of the first connecting frame (1201) is rotatably connected to two groups of second connecting frames (1202), and the bottoms of the two groups of second connecting frames (1202) are provided with multiple groups of guide blocks (1203).

8. The engine cylinder head strength detection device according to claim 7, characterized in that: The plurality of guide blocks (1203) are each provided with a guide groove (1204) that matches the movable frame (1107).

9. A method for detecting the strength of an engine cylinder head, characterized in that The process of using the engine cylinder head strength detection device according to any one of claims 1 to 8 comprises the following steps: S1: First, the telescopic assembly (4) is activated to push the lifting plate (5) downward, so that the two sets of detection upper molds (6) and the detection lower molds (704) located directly below the detection upper molds (6) of the two sets of first transfer mechanisms (7) are docked, and the cylinder head in the detection lower mold (704) is tested for air tightness; S2: At the same time, the two groups of first transfer mechanisms (7) and the other group of detection lower molds (704) are respectively close to the two groups of second transfer mechanisms (9), and the third driving component (909) is started to drive the carrier (910) to descend, so that the cylinder head clamps (11) at both ends of the carrier (910) are lowered to the grasping height, and the two groups of cylinder head clamps (11) are started, and the two groups of fixing frames (1104) of one group of cylinder head clamps (11) clamp and fix the cylinder head that has been inspected in the detection lower mold (704), and the two groups of fixing frames (1104) of the other group of cylinder head clamps (11) clamp and fix the cylinder head to be inspected in the conveying system; S3: Next, the third driving component (909) is controlled to push the carrier (910) to rise, so that the two groups of cylinder head clamps (11) are raised, and the supporting frames (1110) of the cylinder head clamps (11) are close to each other under the guidance of the guide groove (1204). The cylinder head clamped by the user protection fixing frame (1104) is prevented from slipping, and the second driving component (906) is started to drive the carrier (910) to rotate 180°, switching the positions of the two groups of cylinder head clamps (11), and then loosening the cylinder head clamps (11) to complete the loading and unloading work of the inspection lower mold (704), and the cylinder head that has completed the inspection is transported to the designated area by the conveying system.

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