Engine cylinder cover strength detection device

Abstract

The invention relates to the technical field of engine component detection, in particular to an engine cylinder cover strength detection device which comprises a bottom cover and the like. A clamping assembly used for clamping an engine cylinder cover is installed in the bottom cover, heating test simulation assemblies are evenly arranged in the bottom cover, the firepower face of the engine cylinder cover makes contact with the heating test simulation assemblies, an upper cover is arranged above the bottom cover, and the upper cover is driven by a first driving assembly to move up and down. When the upper cover is in contact with the bottom cover, a closed space can be formed. The piston cylinder, the movable cover, the test rod and other parts are arranged, thermal load borne by an engine in actual work can be simulated through impact of high-temperature substances on a combustion chamber of an engine cylinder cover, meanwhile, the movable cover moves upwards, and then mechanical impact can be applied to the test rod; therefore, the brittleness, crack generation and expansion behavior of the cylinder cover at high temperature can be detected, and the judgment of the reliability of the material in long-term use is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of engine component detection, and particularly to an engine cylinder head strength detection device. Background Art

[0002] The engine cylinder head is located above the cylinder. Its main functions are to seal the cylinder, maintain the pressure inside the cylinder, and ensure the tightness of the combustion chamber. Since the cylinder head bears high temperature, high pressure, and mechanical loads during the operation of the engine, fatigue cracks, deformation, or wear often occur on the fire surface. Therefore, in order to accurately evaluate the durability and reliability of the cylinder head during long-term operation, a thermal fatigue test is usually carried out.

[0003] Existing thermal fatigue test technologies mostly rely on single environment simulation, such as only thermal load or static mechanical testing, and it is difficult to truly reproduce the actual working conditions where the engine combustion chamber simultaneously bears high-temperature gas impact and dynamic mechanical stress. In view of this, the present invention proposes an engine cylinder head strength detection device to solve the above-mentioned technical problems. Summary of the Invention

[0004] In order to overcome the technical problems mentioned in the background art, the present invention provides an engine cylinder head strength detection device.

[0005] The technical implementation scheme of the present invention is as follows: An engine cylinder head strength detection device includes a bottom cover. A clamping assembly for clamping the engine cylinder head is installed inside the bottom cover. Heating test simulation components are evenly arranged inside the bottom cover. The fire surface of the engine cylinder head is in contact with the heating test simulation components. An upper cover is arranged above the bottom cover. The upper cover is driven by a first driving assembly to move up and down. When the upper cover contacts the bottom cover, a closed space can be formed. An environment simulation component capable of simulating the usage environment of the engine cylinder head is installed inside the bottom cover. The heating test simulation component includes a piston cylinder fixedly installed inside the bottom cover. A piston plate is hermetically and slidably connected inside the piston cylinder. A piston rod is fixedly connected to the bottom surface of the piston plate. The top of the piston cylinder communicates with a contact cylinder that contacts the fire surface of the engine cylinder head. A sealable sealing component is arranged between the piston cylinder and the contact cylinder. A test rod for detecting the mechanical strength of the engine cylinder head is installed on the sealing component. The piston rod is driven by a second driving assembly to move.

[0006] Further, the sealing component includes a movable ring arranged inside the contact cylinder. Connecting rods are symmetrically fixedly connected to the bottom surface of the movable ring. The connecting rods penetrate through the contact cylinder and extend below the contact cylinder. All the connecting rods are commonly fixedly connected to a second connecting plate. The second connecting plate is driven by a first electric telescopic rod to move up and down. A movable cover is slidably connected to the movable ring. A second elastic member is arranged between the movable cover and the movable ring. The movable cover is used to seal the piston cylinder. A test rod is installed on the top surface of the movable cover.

[0007] Furthermore, a first guiding block and a second guiding block are fixedly connected to the upper and lower ends inside the contact cylinder respectively. Fourth inclined surfaces for guiding the flow of high-temperature substances are provided on both the first guiding block and the second guiding block. A fifth inclined surface in sealed contact with the second guiding block and a sixth inclined surface for guiding the flow of high-temperature substances are provided on the movable cover.

[0008] Furthermore, a heating cavity is provided inside the contact cylinder, and a heating coil is installed in the heating cavity. A heat conducting plate is provided on one side of the top surface of the contact cylinder in contact with the firing surface of the engine cylinder head.

[0009] Furthermore, the clamping assembly includes second electric push rods symmetrically installed on the inner side wall of the bottom cover. A clamping seat is fixedly connected to the telescopic rod of the second electric push rod. Flexible clamps are installed on the side surfaces of the clamping seats close to each other. A supporting groove for supporting the engine cylinder head is provided on the clamping seat.

[0010] Furthermore, the environment simulation assembly includes a temporary storage box fixedly connected to the lower part inside the bottom cover. A first partition board is fixedly connected inside the temporary storage box. The first partition board divides the temporary storage box into a gas cavity and a liquid cavity. A gas box and a water box are slidably connected inside the temporary storage box. The gas box and the water box are respectively communicated with the gas cavity and the liquid cavity. Nozzles are uniformly provided on the gas box and the water box. A rack is fixedly connected to the gas box and the water box together. A driving motor is installed inside the bottom cover. A gear is fixedly connected to the output shaft of the driving motor. The gear meshes with the rack.

[0011] Furthermore, the second driving assembly includes a second electric telescopic rod installed inside the bottom cover. A movable plate is fixedly connected to the telescopic rod of the second electric telescopic rod. Guide plates are fixedly connected to both ends of the movable plate. All the piston rods penetrate through the bottom of the piston cylinder, and a first connecting plate is fixedly connected to the bottom ends of all the piston rods together. A first elastic member is provided between the first connecting plate and the piston cylinder. A first inclined surface matching with the first connecting plate is provided on one side surface of the guide plate. A reset notch for resetting the guide plate is provided on the guide plate. A limiting assembly is provided inside the reset notch.

[0012] Furthermore, the limiting assembly includes a wedge block slidably connected inside the reset notch. A third elastic member is provided between the wedge block and the guide plate. A second inclined surface adapted to the first inclined surface is provided on one side surface of the wedge block. A third inclined surface for the first connecting plate to reset is provided on the other side surface of the wedge block.

[0013] Furthermore, the bottom cover is installed on the bracket, and a first driving component is installed on the bracket. An upper cover is installed on the output component of the first driving component. An environment box is also installed on the bracket. The environment box is divided into a first environment chamber, a second environment chamber, and a third environment chamber by a second partition. A stirring device is installed in the first environment chamber. The first environment chamber is connected to the liquid chamber through a first pump body and a pipeline. Feed pipes are installed in the second environment chamber and the third environment chamber, and check valves are provided on the feed pipes. Temperature control devices are installed in the second environment chamber and the third environment chamber. The second environment chamber is connected to the gas chamber through a second pump body and a pipeline. The third environment chamber is connected to the piston cylinder through a check valve and a pipeline.

[0014] The present invention has the following advantages: The present invention is provided with components such as a piston cylinder, a movable cover, and a test rod. By impacting the combustion chamber of the engine cylinder head with a high-temperature substance, the thermal load received by the engine during actual operation can be simulated. At the same time, since the movable cover moves upward, the test rod can be made to apply a mechanical impact, thereby enabling the detection of the brittleness, crack generation, and crack propagation behavior of the cylinder head at high temperatures, which helps to judge the reliability of the material during long-term use. Therefore, by impacting the combustion chamber of the engine cylinder head with a high-temperature substance and applying a mechanical impact through the test rod, the mechanical strength, heat resistance, and impact resistance of the cylinder head material can be accurately evaluated. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional structural schematic diagram of the present invention.

[0016] Figure 2 is a cross-sectional view of components such as the bottom cover, the temporary storage box, and the clamping seat of the present invention.

[0017] Figure 3 is a schematic diagram of components such as the second electric telescopic rod, the piston cylinder, and the contact cylinder of the present invention.

[0018] Figure 4 is a cross-sectional view of components such as the piston cylinder, the contact cylinder, and the piston plate of the present invention.

[0019] Figure 5 is a cross-sectional view of components such as the piston cylinder, the contact cylinder, and the movable cover of the present invention.

[0020] Figure 6 is a cross-sectional view of components such as the guide plate, the movable plate, and the first connecting plate of the present invention.

[0021] Figure 7 is a cross-sectional view of components such as the guide plate, the movable plate, and the wedge block of the present invention.

[0022] Figure 8 is a schematic diagram of the wedge block and the third elastic member of the present invention.

[0023] Figure 9Schematic diagram of components such as the temporary storage box, rack, and drive motor of the present invention.

[0024] Figure 10 Cross-sectional view of components such as the temporary storage box, rack, and drive motor of the present invention.

[0025] Figure 11 Cross-sectional view of components such as the environmental box, stirring device, and second partition of the present invention.

[0026] Figure 12 Schematic diagram of components such as the second electric push rod, clamping seat, and flexible fixture of the present invention.

[0027] Reference numerals in the drawings: 101: bottom cover, 102: upper cover, 103: first drive assembly, 104: piston cylinder, 105: piston plate, 106: piston rod, 107: contact cylinder, 1071: heating chamber, 108: test rod, 201: movable ring, 202: connecting rod, 203: second connecting plate, 204: first electric telescopic rod, 205: movable cover, 2051: fifth inclined surface, 2052: sixth inclined surface, 206: second elastic member, 211: first guide block, 212: second guide block, 2100: fourth inclined surface, 301: heating coil, 302: heat conducting plate, 401: second electric push rod, 402: clamping seat, 4021: supporting groove, 403: flexible fixture, 501: temporary storage box, 5011: air chamber, 5012: liquid chamber, 502: first partition, 503: air tank, 504: water tank, 505: nozzle, 506: rack, 507: drive motor, 508: gear, 601: second electric telescopic rod, 602: movable plate, 603: guide plate, 6031: first inclined surface, 6032: reset notch, 604: first connecting plate, 605: first elastic member, 701: wedge block, 7011: second inclined surface, 7012: third inclined surface, 702: third elastic member, 801: bracket, 802: environmental box, 8021: first environmental chamber, 8022: second environmental chamber, 8023: third environmental chamber, 803: second partition, 804: stirring device, 805: first pump body, 806: feed pipe, 807: second pump body. Detailed implementation manners

[0028] The technical solution of the present invention will be further described below with reference to the accompanying drawings.

[0029] An engine cylinder head strength detection device, as Figures 1-12As shown in the figure, it includes a bottom cover 101. Inside the bottom cover 101, a clamping assembly for clamping the engine cylinder head is installed. Specifically, the clamping assembly includes second electric push rods 401 symmetrically installed on the inner side walls of the bottom cover 101. A clamping seat 402 is fixedly connected to the telescopic rod of the second electric push rod 401. A flexible fixture 403 is installed on one side of the clamping seat 402 that faces each other. A support groove 4021 for supporting the engine cylinder head is provided on the clamping seat 402. Thus, it can be seen that the engine cylinder head is placed on the support groove 4021 with the firing surface facing downwards. Then, the second electric push rod 401 is started. The telescopic rod of the second electric push rod 401 extends, thereby driving the clamping seats 402 to approach each other. Furthermore, the flexible fixture 403 can clamp the engine cylinder head. The flexible fixture 403 is a prior art. The flexible fixture 403 can adapt to the uneven surfaces on the side of the engine cylinder head, thus avoiding the risk of deformation or damage to the engine cylinder head. The heating test simulation components are evenly arranged inside the bottom cover 101. There are four heating test simulation components, corresponding to the four combustion chambers on the engine cylinder head. The firing surface of the engine cylinder head is in contact with the heating test simulation components. Above the bottom cover 101, there is an upper cover 102. The upper cover 102 is driven by a first driving assembly 103 to move up and down. When the upper cover 102 contacts the bottom cover 101, a sealed space can be formed. An environment simulation component capable of simulating the usage environment of the engine cylinder head is installed inside the bottom cover 101;

[0030] Furthermore, the heating test simulation assembly includes a piston cylinder 104 fixedly installed in the bottom cover 101. A piston plate 105 is hermetically and slidably connected in the piston cylinder 104. A piston rod 106 is fixedly connected to the bottom surface of the piston plate 105. The top of the piston cylinder 104 communicates with a contact cylinder 107 that contacts the firing surface of the engine cylinder head. A heating chamber 1071 is provided in the contact cylinder 107, and a heating coil 301 is installed in the heating chamber 1071. On one side of the top surface of the contact cylinder 107 that contacts the firing surface of the engine cylinder head, a heat conducting plate 302 is provided. The heat conducting plate 302 is specifically graphite, and graphite has high thermal conductivity. Thus, through the heating of the heating coil 301, the heat is conducted to the heat conducting plate 302, and then the heat conducting plate 302 exchanges heat with the firing surface of the engine cylinder head, and then the static thermal state can be simulated, and the deformation, crack generation and other properties of the cylinder head material under thermal load can be evaluated. A separable sealing assembly is provided between the piston cylinder 104 and the contact cylinder 107. A test rod 108 for detecting the mechanical strength of the engine cylinder head is installed on the sealing assembly. The piston rod 106 is driven by a second driving assembly to move. When the piston rod 106 moves downward, the piston cylinder 104 sucks in high-temperature substances through the action of the piston plate 105. When the piston rod 106 returns to its original position, the piston plate 105 pushes the high-temperature substances to open the sealing assembly, so that the high-temperature substances enter the contact cylinder 107 and impact the firing surface of the engine cylinder head. The high-temperature substances are specifically high-temperature gases. Specifically, the sealing assembly includes a movable ring 201 provided in the contact cylinder 107. Connecting rods 202 are symmetrically and fixedly connected to the bottom surface of the movable ring 201. The connecting rods 202 penetrate through the contact cylinder 107 and extend below the contact cylinder 107. All the connecting rods 202 are commonly fixedly connected to a second connecting plate 203. The second connecting plate 203 is driven by a first electric telescopic rod 204 to move up and down. A movable cover 205 is slidably connected to the movable ring 201. A second elastic member 206 is provided between the movable cover 205 and the movable ring 201. The second elastic member 206 is specifically a spring. The movable cover 205 is used to block the piston cylinder 104. A test rod 108 is installed on the top surface of the movable cover 205. Thus, by retracting the first electric telescopic rod 204, the distance between the movable ring 201 and the movable cover 205 can be adjusted, and then the elastic strength of the second elastic member 206 can be adjusted, and then the magnitude of the mechanical impact force applied by the test rod 108 can be adjusted. First guiding blocks 211 and second guiding blocks 212 are fixedly connected to the upper and lower ends in the contact cylinder 107 respectively. Fourth inclined surfaces 2100 for guiding the flow of high-temperature substances are provided on both the first guiding blocks 211 and the second guiding blocks 212. Fifth inclined surfaces 2051 in sealed contact with the second guiding blocks 212 and sixth inclined surfaces 2052 for guiding the flow of high-temperature substances are provided on the movable cover 205. It can be seen that the second driving assembly is started to make the piston rod 106 move downward, and then the piston plate 105 moves downward to suck the high-temperature substances into the piston cylinder 104. When double tests of thermal force and mechanical force are required, the piston rod 106 moves upward.The piston plate 105 pushes the high-temperature substance to extrude the movable cover 205, causing the movable cover 205 to move upward. The movable cover 205 extrudes the second elastic member 206, causing the second elastic member 206 to store elastic potential energy. Furthermore, the piston plate 105 pushes the high-temperature substance into the contact cylinder 107, and guided by the sixth inclined surface 2052 on the movable cover 205 and the fourth inclined surface 2100 of the first guide block 211, the high-temperature substance rushes into the combustion chamber on the firing surface. Thus, by the impact of the high-temperature substance on the combustion chamber of the engine cylinder head, the thermal load received by the engine during actual operation can be simulated. At the same time, since the movable cover 205 moves upward, the test rod 108 can be made to apply a mechanical impact. In this way, the brittleness, crack generation and their propagation behavior of the cylinder head at high temperature can be detected, which helps to judge the reliability of the material during long-term use. Therefore, by impacting the combustion chamber of the engine cylinder head with the high-temperature substance and applying a mechanical impact through the test rod 108, the mechanical strength, heat resistance and impact resistance of the cylinder head material can be accurately evaluated.

[0031] Further, the second driving component includes a second electric telescopic rod 601 installed in the bottom cover 101. A movable plate 602 is fixedly connected to the telescopic rod of the second electric telescopic rod 601. Guide plates 603 are fixedly connected to both ends of the movable plate 602. All the piston rods 106 penetrate through the bottom of the piston cylinder 104, and a first connecting plate 604 is fixedly connected to the bottom ends of all the piston rods 106. A first elastic member 605 is disposed between the first connecting plate 604 and the piston cylinder 104. The first elastic member 605 is specifically a spring. A first inclined surface 6031 that cooperates with the first connecting plate 604 is disposed on one side surface of the guide plate 603. A reset notch 6032 for resetting the guide plate 603 is provided on the guide plate 603. A limiting component is disposed in the reset notch 6032. Specifically, the limiting component includes a wedge-shaped block 701 slidably connected in the reset notch 6032. A third elastic member 702 is disposed between the wedge-shaped block 701 and the guide plate 603. The third elastic member 702 is specifically a spring. A second inclined surface 7011 adapted to the first inclined surface 6031 is disposed on one side surface of the wedge-shaped block 701. A third inclined surface 7012 for the first connecting plate 604 to reset is disposed on another side surface of the wedge-shaped block 701. It can be seen that when the second electric telescopic rod 601 is started, the telescopic rod of the second electric telescopic rod 601 retracts, thereby driving the movable plate 602 to retract. The movable plate 602 drives the guide plate 603 to retract. Then, the second inclined surface 7011 on the wedge-shaped block 701 and the first inclined surface 6031 on the guide plate 603 squeeze the first connecting plate 604, causing the first connecting plate 604 to move downward. Then, the first connecting plate 604 drives the piston rod 106 to move downward, so that the first elastic member 605 stores elastic potential energy. After the guide plate 603 completely passes over the first connecting plate 604, the first connecting plate 604 no longer contacts the first connecting plate 604. Then, the first elastic member 605 releases elastic potential energy, driving the piston rod 106 to move upward. In this way, the high-temperature substance in the piston cylinder 104 can be instantaneously released to simulate the actual operation process of the engine cylinder head. During reset, the second electric telescopic rod 601 is started. The telescopic rod of the second electric telescopic rod 601 extends, thereby driving the guide plate 603 to extend. Then, the first connecting plate 604 squeezes the third inclined surface 7012 on the wedge-shaped block 701. Then, the wedge-shaped block 701 squeezes the third elastic member 702, causing the third elastic member 702 to store elastic potential energy. Thus, the reset of the first connecting plate 604 can be completed.

[0032] Furthermore, the environment simulation component includes a temporary storage box 501 fixedly connected to the lower part inside the bottom cover 101. A first partition plate 502 is fixedly connected inside the temporary storage box 501. The first partition plate 502 divides the temporary storage box 501 into an air chamber 5011 and a liquid chamber 5012. An air box 503 and a water box 504 are slidably connected inside the temporary storage box 501. The air box 503 and the water box 504 are respectively communicated with the air chamber 5011 and the liquid chamber 5012. Nozzles 505 are uniformly arranged on the air box 503 and the water box 504. A rack 506 is fixedly connected to the air box 503 and the water box 504 together. A driving motor 507 is installed inside the bottom cover 101. A gear 508 is fixedly connected to the output shaft of the driving motor 507. The gear 508 meshes with the rack 506. The bottom cover 101 is installed on a bracket 801. A first driving component 103 is installed on the bracket 801. The first driving component 103 is specifically an electric slide rail. An upper cover 102 is installed on the output component of the first driving component 103, that is, the upper cover 102 is installed on the slider of the electric slide rail. An environment box 802 is also installed on the bracket 801. The environment box 802 is divided into a first environment chamber 8021, a second environment chamber 8022 and a third environment chamber 8023 by a second partition plate 803. A stirring device 804 is installed inside the first environment chamber 8021. The stirring device 804 is specifically a rotating motor and a stirring rod, that is, a stirring rod is rotatably connected inside the first environment chamber 8021. The output shaft of the rotating motor is fixedly connected to the stirring rod. The first environment chamber 8021 is filled with a liquid for simulating the working environment of the engine cylinder head, such as water. The first environment chamber 8021 is communicated with the liquid chamber 5012 through a first pump body 805 and a pipeline. Feed pipes 806 are installed inside the second environment chamber 8022 and the third environment chamber 8023. Check valves are arranged on the feed pipes 806. Temperature control devices are installed inside the second environment chamber 8022 and the third environment chamber 8023. The temperature control devices are specifically temperature control pipes and temperature controllers. The second environment chamber 8022 is communicated with the air chamber 5011 through a second pump body 807 and a pipeline. The third environment chamber 8023 is communicated with the piston cylinder 104 through a check valve and a pipeline. It can be seen that gas is introduced into the second environment chamber 8022 and the third environment chamber 8023 through the feed pipe 806, and then the gas is subjected to heat exchange by the temperature control device, that is, the gas exchanges heat with the temperature control pipe. The air inside the third environment chamber 8023 is heated. Then when the piston plate 105 moves downward, the hot air inside the third environment chamber 8023 is sucked into the piston cylinder 104 by the piston plate 105. Through the first pump body 805 and the second pump body 807, the liquid and the corresponding gas can be transported into the air box 503 and the water box 504, and finally sprayed out by the nozzles 505. In this way, the working environment of the engine cylinder head can be simulated. Start the driving motor 507, and then the output shaft of the driving motor 507 drives the gear 508 to rotate. The gear 508 drives the rack 506 to rotate through meshing transmission, and then drives the air box 503 and the water box 504 to rotate, and then the nozzles 505 can be rotated.In this way, the liquid and gas ejected from the nozzle 505 can be made more uniform.

[0033] Although the present disclosure has been shown and described with reference to specific exemplary embodiments thereof, those skilled in the art should understand that various changes in form and detail may be made therein without departing from the spirit and scope of the present disclosure as defined by the appended claims and their equivalents. Therefore, the scope of the present disclosure should not be limited to the above embodiments, but should be determined not only by the appended claims but also by the equivalents of the appended claims.

Claims

1. An engine cylinder head strength detection device, characterized in that: It includes a bottom cover (101). Inside the bottom cover (101), a clamping assembly for clamping the engine cylinder head is installed. Inside the bottom cover (101), a heating test simulation assembly is evenly arranged. The firing surface of the engine cylinder head is in contact with the heating test simulation assembly. Above the bottom cover (101), a top cover (102) is provided. The top cover (102) is driven by a first driving assembly (103) to move up and down. When the top cover (102) contacts the bottom cover (101), a sealed space can be formed. Inside the bottom cover (101), an environment simulation assembly capable of simulating the usage environment of the engine cylinder head is installed; The heating test simulation assembly includes a piston cylinder (104) fixedly installed inside the bottom cover (101). Inside the piston cylinder (104), a piston plate (105) is hermetically and slidably connected. The bottom surface of the piston plate (105) is fixedly connected with a piston rod (106). The top of the piston cylinder (104) is communicated with a contact cylinder (107) that contacts the firing surface of the engine cylinder head. A separable sealing assembly is provided between the piston cylinder (104) and the contact cylinder (107). A test rod (108) for detecting the mechanical strength of the engine cylinder head is installed on the sealing assembly. The piston rod (106) is driven by a second driving assembly to move.

2. The strength detection device for an engine cylinder head according to claim 1, characterized in that: The sealing assembly includes a movable ring (201) arranged inside the contact cylinder (107). The bottom surface of the movable ring (201) is symmetrically and fixedly connected with connecting rods (202). The connecting rods (202) penetrate through the contact cylinder (107) and extend below the contact cylinder (107). All the connecting rods (202) are jointly fixedly connected with a second connecting plate (203). The second connecting plate (203) is driven by a first electric telescopic rod (204) to move up and down. A movable cover (205) is slidably connected to the movable ring (201). A second elastic member (206) is provided between the movable cover (205) and the movable ring (201). The movable cover (205) is used to block the piston cylinder (104). A test rod (108) is installed on the top surface of the movable cover (205).

3. The engine cylinder head strength detection device according to claim 2, characterized in that: A first guide block (211) and a second guide block (212) are respectively fixedly connected to the upper and lower ends inside the contact cylinder (107). Fourth inclined surfaces (2100) for guiding the flow of high-temperature substances are provided on both the first guide block (211) and the second guide block (212). A fifth inclined surface (2051) in sealed contact with the second guide block (212) and a sixth inclined surface (2052) for guiding the flow of high-temperature substances are provided on the movable cover (205).

4. The strength detection device for an engine cylinder head according to claim 1, characterized in that: A heating cavity (1071) is provided inside the contact cylinder (107). A heating coil (301) is installed inside the heating cavity (1071). A heat conducting plate (302) is provided on the side of the top surface of the contact cylinder (107) that contacts the firing surface of the engine cylinder head.

5. The strength detection device for an engine cylinder head according to claim 1, characterized in that: The clamping assembly includes second electric push rods (401) symmetrically installed on the inner side wall of the bottom cover (101). A clamping seat (402) is fixedly connected to the telescopic rod of the second electric push rod (401). A flexible fixture (403) is installed on the side surfaces of the clamping seats (402) that are close to each other. A supporting groove (4021) for supporting the engine cylinder head is provided on the clamping seat (402).

6. The strength detection device for an engine cylinder head according to claim 1, wherein: The environmental simulation component includes a temporary storage box (501) fixedly connected to the lower part inside the bottom cover (101). A first partition plate (502) is fixedly connected inside the temporary storage box (501). The first partition plate (502) divides the temporary storage box (501) into an air chamber (5011) and a liquid chamber (5012). An air box (503) and a water box (504) are slidably connected inside the temporary storage box (501). The air box (503) and the water box (504) are respectively communicated with the air chamber (5011) and the liquid chamber (5012). Nozzles (505) are uniformly arranged on the air box (503) and the water box (504). A rack (506) is fixedly connected to the air box (503) and the water box (504) together. A driving motor (507) is installed inside the bottom cover (101). A gear (508) is fixedly connected to the output shaft of the driving motor (507). The gear (508) meshes with the rack (506).

7. The strength detection device for an engine cylinder head according to claim 6, wherein: The second driving component includes a second electric telescopic rod (601) installed inside the bottom cover (101). A movable plate (602) is fixedly connected to the telescopic rod of the second electric telescopic rod (601). Guide plates (603) are fixedly connected to both ends of the movable plate (602). All the piston rods (106) penetrate through the bottom of the piston cylinder (104), and a first connecting plate (604) is fixedly connected to the bottom ends of all the piston rods (106) together. A first elastic member (605) is arranged between the first connecting plate (604) and the piston cylinder (104). A first inclined surface (6031) matching the first connecting plate (604) is arranged on one side surface of the guide plate (603). A reset notch (6032) for resetting the guide plate (603) is arranged on the guide plate (603). A limiting component is arranged inside the reset notch (6032).

8. The strength detection device for an engine cylinder head according to claim 7, characterized in that: The limiting component includes a wedge-shaped block (701) slidably connected inside the reset notch (6032). A third elastic member (702) is arranged between the wedge-shaped block (701) and the guide plate (603). A second inclined surface (7011) adapted to the first inclined surface (6031) is arranged on one side surface of the wedge-shaped block. A third inclined surface (7012) for the first connecting plate (604) to reset is arranged on the other side surface of the wedge-shaped block.

9. The strength detection device for an engine cylinder head according to claim 8, wherein: The bottom cover (101) is installed on the bracket (801). A first driving assembly (103) is installed on the bracket (801). The output component of the first driving assembly (103) is installed with the upper cover (102). An environment box (802) is also installed on the bracket (801). The environment box (802) is divided into a first environment chamber (8021), a second environment chamber (8022), and a third environment chamber (8023) by a second partition board (803). A stirring device (804) is installed in the first environment chamber (8021). The first environment chamber (8021) is communicated with the liquid chamber (5012) through a first pump body (805) and a pipeline. A feed pipe (806) is installed in the second environment chamber (8022) and the third environment chamber (8023). A one-way valve is arranged on the feed pipe (806). A temperature control device is installed in the second environment chamber (8022) and the third environment chamber (8023). The second environment chamber (8022) is communicated with the gas chamber (5011) through a second pump body (807) and a pipeline. The third environment chamber (8023) is communicated with the piston cylinder (104) through a one-way valve and a pipeline.

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