Engine cylinder head strength detection device

Abstract

The application 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 for clamping an engine cylinder cover is arranged in the bottom cover; heating test simulation assemblies are uniformly arranged in the bottom cover; the fire surface of the engine cylinder cover is in contact with the heating test simulation assemblies; an upper cover is arranged above the bottom cover; the upper cover is driven by a first driving assembly to realize up-down movement; when the upper cover is in contact with the bottom cover, a closed space can be formed. The engine cylinder cover strength detection device is provided with a piston cylinder, a movable cover and a test rod and the like, the combustion chamber of the engine cylinder cover is impacted by high-temperature substances, the heat load actually borne by the engine in working can be simulated, the movable cover is moved upwards, mechanical impact can be exerted by the test rod, the brittleness, crack generation and crack expansion behavior of the cylinder cover under high temperature can be detected, and the reliability of the material in long-term use can be judged.

Description

TECHNICAL FIELD

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

[0002] The engine cylinder head is located above the cylinder, and its main function is to seal the cylinder, maintain the pressure in the cylinder, and ensure the airtightness of the combustion chamber. Since the cylinder head bears high temperature, high pressure and mechanical load during engine operation, the fire surface often forms fatigue cracks, deformation or wear and other problems. Therefore, in order to accurately evaluate the durability and reliability of the cylinder head in long-term operation, a thermal fatigue test is usually performed.

[0003] The existing technology thermal fatigue test technology mainly depends on single environment simulation, such as only thermal load or static mechanical test, and it is difficult to truly reproduce the actual working conditions of the engine combustion chamber under the impact of high-temperature combustion gas and dynamic mechanical stress. In view of this, the present application provides an engine cylinder head strength detection device to solve the above technical problems. SUMMARY

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

[0005] The technical implementation scheme of the present application is as follows: an engine cylinder head strength detection device, comprising a bottom cover, a clamping assembly for clamping an engine cylinder head is installed in the bottom cover, a heating test simulation assembly is uniformly arranged in the bottom cover, the fire surface of the engine cylinder head is in contact with the heating test simulation assembly, an upper cover is arranged above the bottom cover, the upper cover is driven to move up and down by a first driving assembly, a closed space can be formed when the upper cover is in contact with the bottom cover, an environment simulation assembly capable of simulating the use environment of the engine cylinder head is installed in the bottom cover; the heating test simulation assembly comprises a piston cylinder fixedly installed in the bottom cover, a piston plate is sealingly and slidably connected in the piston cylinder, a piston rod is fixedly connected to the bottom surface of the piston plate, a contact cylinder in contact with the fire surface of the engine cylinder head is communicated with the top of the piston cylinder, an openable sealing assembly 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 assembly, and the piston rod is driven to move by a second driving assembly.

[0006] Further, the sealing assembly comprises a movable ring arranged in the contact cylinder, the movable ring is fixedly connected to the connecting rods on the bottom surface in a symmetrical manner, the connecting rods penetrate through the contact cylinder and extend below the contact cylinder, all the connecting rods are fixedly connected to a second connecting plate, the second connecting plate is driven to move up and down by a first electric telescopic rod, 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 for plugging the piston cylinder, and the test rod is installed on the top surface of the movable cover.

[0007] Further, the first guide block and the second guide block are respectively fixed to the upper end and the lower end of the contact cylinder, the fourth inclined surface for guiding the flow of high-temperature substances is arranged on the first guide block and the second guide block, the fifth inclined surface for sealingly contacting with the second guide block and the sixth inclined surface for guiding the flow of high-temperature substances are arranged on the movable cover.

[0008] Further, the heating cavity is arranged in the contact cylinder, the heating coil is arranged in the heating cavity, and the heat-conducting plate is arranged on the side of the top surface of the contact cylinder in contact with the fire surface of the engine cylinder cover.

[0009] Further, the clamping assembly comprises the second electric push rod symmetrically arranged on the inner side wall of the bottom cover, the clamping seat is fixed to the telescopic rod of the second electric push rod, the flexible clamp is arranged on the side of the clamping seat close to each other, and the supporting groove for supporting the engine cylinder cover is arranged on the clamping seat.

[0010] Further, the environment simulation assembly comprises the temporary storage box fixed to the lower part of the bottom cover, the first partition plate is fixed in the temporary storage box, the temporary storage box is divided into the gas cavity and the liquid cavity by the first partition plate, the gas tank and the water tank are slidably connected in the temporary storage box, the gas tank and the water tank are connected with the gas cavity and the liquid cavity respectively, the nozzles are uniformly arranged on the gas tank and the water tank, the rack is fixed to the gas tank and the water tank, the driving motor is arranged in the bottom cover, the gear is fixed to the output shaft of the driving motor, and the gear is engaged with the rack.

[0011] Further, the second driving assembly comprises the second electric telescopic rod arranged in the bottom cover, the movable plate is fixed to the telescopic rod of the second electric telescopic rod, the guide plates are fixed to the two ends of the movable plate, all the piston rods penetrate through the bottom of the piston cylinder, the first connecting plate is fixed to the bottom ends of all the piston rods, the first elastic member is arranged between the first connecting plate and the piston cylinder, the first inclined surface matched with the first connecting plate is arranged on the side of the guide plate, the reset slot for resetting the guide plate is arranged on the guide plate, and the limiting assembly is arranged in the reset slot.

[0012] Further, the limiting assembly comprises the wedge-shaped block slidably connected in the reset slot, the third elastic member is arranged between the wedge-shaped block and the guide plate, the second inclined surface matched with the first inclined surface is arranged on the side of the wedge-shaped block, and the third inclined surface for resetting the first connecting plate is arranged on the other side of the wedge-shaped block.

[0013] Further, the bottom cover is installed on the support, the first driving assembly is installed on the support, the output component of the first driving assembly is installed with the upper cover, the environmental box is also installed on the support, the environmental box is divided into the first environmental cavity, the second environmental cavity and the third environmental cavity by the second partition plate, the stirring device is installed in the first environmental cavity, the first environmental cavity is connected with the liquid cavity through the first pump body and the pipeline, the feeding pipe is installed in the second environmental cavity and the third environmental cavity, the one-way valve is arranged on the feeding pipe, the temperature control device is installed in the second environmental cavity and the third environmental cavity, the second environmental cavity is connected with the gas cavity through the second pump body and the pipeline, and the third environmental cavity is connected with the piston cylinder through the one-way valve and the pipeline.

[0014] The application has the following advantages: the piston cylinder, the movable cover and the test rod are arranged, the combustion chamber of the engine cylinder cover is impacted by the high-temperature substance, the heat load of the engine in actual work can be simulated, the movable cover is moved upward, the mechanical impact of the test rod is applied, the brittleness, crack generation and expansion behavior of the cylinder cover under high temperature can be detected, the reliability of the material in long-term use can be judged, the mechanical strength, heat resistance and impact resistance of the cylinder cover material can be accurately evaluated by impacting the combustion chamber of the engine cylinder cover by the high-temperature substance and applying the mechanical impact of the test rod. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the application.

[0016] Figure 2 It is a sectional view of the bottom cover, the temporary storage box and the clamping seat and other components of the application.

[0017] Figure 3 It is a schematic diagram of the second electric telescopic rod, the piston cylinder and the contact cylinder and other components of the application.

[0018] Figure 4 It is a sectional view of the piston cylinder, the contact cylinder and the piston plate and other components of the application.

[0019] Figure 5 It is a sectional view of the piston cylinder, the contact cylinder and the movable cover and other components of the application.

[0020] Figure 6 It is a sectional view of the guide plate, the movable plate and the first connecting plate and other components of the application.

[0021] Figure 7 It is a sectional view of the guide plate, the movable plate and the wedge-shaped block and other components of the application.

[0022] Figure 8 It is a schematic diagram of the wedge-shaped block and the third elastic member of the application.

[0023] Figure 9The figure is a schematic view of the temporary storage box, the rack and the driving motor of the application.

[0024] Figure 10 The figure is a sectional view of the temporary storage box, the rack and the driving motor of the application.

[0025] Figure 11 The figure is a sectional view of the environmental box, the stirring device and the second partition plate of the application.

[0026] Figure 12 The figure is a schematic view of the second electric push rod, the clamping seat and the flexible clamp of the application.

[0027] Markings in the figure: 101: bottom cover, 102: upper cover, 103: first driving assembly, 104: piston cylinder, 105: piston plate, 106: piston rod, 107: contact cylinder, 1071: heating cavity, 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: bracket, 403: flexible clamp, 501: temporary storage box, 5011: air cavity, 5012: liquid cavity, 502: first partition plate, 503: air tank, 504: water tank, 505: nozzle, 506: rack, 507: driving 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-shaped block, 7011: second inclined surface, 7012: third inclined surface, 702: third elastic member, 801: support, 802: environmental box, 8021: first environmental cavity, 8022: second environmental cavity, 8023: third environmental cavity, 803: second partition plate, 804: stirring device, 805: first pump body, 806: feeding pipe, 807: second pump body. DETAILED DESCRIPTION

[0028] The technical solutions of the application will be further described below in combination with the drawings.

[0029] An engine cylinder head strength detection device, such as Figures 1-12As shown, including the bottom cover 101, the bottom cover 101 is mounted inside the clamping assembly for clamping the engine cylinder head, specifically, the clamping assembly includes a second electric push rod 401 symmetrically mounted on the inner side wall of the bottom cover 101, the telescopic rod of the second electric push rod 401 is fixedly connected with a clamping seat 402, the flexible clamp 403 is mounted on the side of the clamping seat 402 close to each other, the clamping seat 402 is provided with a supporting groove 4021 for supporting the engine cylinder head, so as to place the engine cylinder head on the supporting groove 4021, and the fire surface is set downward, then the second electric push rod 401 is started, the telescopic rod of the second electric push rod 401 is extended, and the clamping seat 402 is driven to approach each other, and the flexible clamp 403 can clamp the engine cylinder head. The flexible clamp 403 is prior art, the flexible clamp 403 can adapt to the uneven surface on the side surface of the engine cylinder head, so as to avoid the risk of deformation or damage of the engine cylinder head, the bottom cover 101 is uniformly arranged with heating test simulation assembly, the heating test simulation assembly is provided with four, corresponding to four combustion chambers on the engine cylinder head, the fire surface of the engine cylinder head is in contact with the heating test simulation assembly, the upper cover 102 is arranged above the bottom cover 101, the upper cover 102 is driven by the first driving assembly 103 to realize the up and down movement, when the upper cover 102 is in contact with the bottom cover 101, a closed space can be formed, the bottom cover 101 is mounted with an environment simulation assembly capable of simulating the use environment of the engine cylinder head;

[0030] Further, the heating test simulation assembly comprises a piston cylinder 104 fixedly installed in the bottom cover 101, a piston plate 105 sealingly and slidably connected in the piston cylinder 104, a piston rod 106 fixedly connected to the bottom surface of the piston plate 105, a contact cylinder 107 in communication with the top of the piston cylinder 104 and in contact with the fire surface of the engine cylinder cover, a heating cavity 1071 arranged in the contact cylinder 107, a heating coil 301 installed in the heating cavity 1071, a heat-conducting plate 302 arranged on the top surface of the contact cylinder 107 and in contact with the side of the fire surface of the engine cylinder cover, and the heat-conducting plate 302 is graphite in particular, which has high thermal conductivity. Thus, the heat is conducted to the heat-conducting plate 302 through the heating of the heating coil 301, and then the heat-conducting plate 302 exchanges heat with the fire surface of the engine cylinder cover, so that the static thermal state can be simulated, and the performance of the cylinder cover material under thermal load, such as deformation and crack generation, can be evaluated. A sealable sealing assembly is arranged between the piston cylinder 104 and the contact cylinder 107, and a test rod 108 for detecting the mechanical strength of the engine cylinder cover is installed on the sealing assembly. The piston rod 106 is driven to move by a second driving assembly. 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 resets, 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 fire surface of the engine cylinder cover. The high-temperature substances are high-temperature gases in particular. Specifically, the sealing assembly comprises a movable ring 201 arranged in the contact cylinder 107, a connecting rod 202 symmetrically fixedly connected to the bottom surface of the movable ring 201, the connecting rod 202 penetrating through the contact cylinder 107 and extending below the contact cylinder 107, and a second connecting plate 203 commonly fixedly connected to all the connecting rods 202. The second connecting plate 203 is driven to move up and down by a first electric telescopic rod 204. A movable cover 205 is slidably connected to the movable ring 201, and a second elastic member 206, which is a spring in particular, is arranged between the movable cover 205 and the movable ring 201. The movable cover 205 is used to block the piston cylinder 104, and the test rod 108 is installed on the top surface of the movable cover 205. Thus, the distance between the movable ring 201 and the movable cover 205 can be adjusted by the retraction of the first electric telescopic rod 204, and then the elastic strength of the second elastic member 206 can be adjusted, and then the size of the mechanical impact force applied by the test rod 108 can be adjusted. First and second guide blocks 211 and 212 are fixedly connected to the upper and lower ends of the contact cylinder 107 respectively, and fourth inclined surfaces 2100 for guiding the flow of high-temperature substances are arranged on the first and second guide blocks 211 and 212. Fifth and sixth inclined surfaces 2051 and 2052 are arranged on the movable cover 205, the fifth inclined surface 2051 is in sealing contact with the second guide block 212, and the sixth inclined surface 2052 is used to guide the flow of high-temperature substances. Therefore, the second driving assembly is started to move the piston rod 106 downward, and then the piston plate 105 moves downward to suck the high-temperature substances into the piston cylinder 104. When the dual test of thermal force and mechanical force is needed, the piston rod 106 moves upward,The piston plate 105 pushes the high-temperature substance to extrude the movable cover 205, so that the movable cover 205 moves upward, the movable cover 205 extrudes the second elastic member 206, so that the second elastic member 206 stores elastic potential energy, and then the piston plate 105 pushes the high-temperature substance into the contact cylinder 107, and is guided through the sixth inclined surface 2052 on the movable cover 205 and the fourth inclined surface 2100 of the first guide block 211, so that the high-temperature substance rushes into the combustion chamber on the fire surface, so that the high-temperature substance impacts the combustion chamber of the engine cylinder cover, the heat load that the engine is subjected to in actual work can be simulated, and at the same time, the movable cover 205 moves upward, so that the test rod 108 can exert a mechanical impact, so that the brittleness, crack generation and expansion behavior of the cylinder cover under high temperature can be detected, which is helpful to judge the reliability of the material in long-term use, and therefore the high-temperature substance impacts the combustion chamber of the engine cylinder cover, and the test rod 108 exerts a mechanical impact, so that the mechanical strength, heat resistance and impact resistance of the cylinder cover material can be accurately evaluated.

[0031] Further, the second driving assembly comprises a second electric telescopic rod 601 mounted 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 two ends of the movable plate 602, all the piston rods 106 penetrate through the bottom of the piston cylinder 104, a first connecting plate 604 is fixedly connected to the bottom ends of all the piston rods 106, a first elastic member 605 is arranged between the first connecting plate 604 and the piston cylinder 104, the first elastic member 605 is specifically a spring, one side surface of the guide plate 603 is provided with a first inclined surface 6031 matched with the first connecting plate 604, the guide plate 603 is provided with a reset slot 6032 for resetting the guide plate 603, a limiting assembly is arranged in the reset slot 6032, specifically, the limiting assembly comprises a wedge-shaped block 701 slidingly connected to the reset slot 6032, a third elastic member 702 is arranged between the wedge-shaped block 701 and the guide plate 603, the third elastic member 702 is specifically a spring, one side surface of the wedge-shaped block 701 is provided with a second inclined surface 7011 matched with the first inclined surface 6031, the other side surface of the wedge-shaped block 701 is provided with a third inclined surface 7012 for resetting the first connecting plate 604, so as to know that the second electric telescopic rod 601 is started, the telescopic rod of the second electric telescopic rod 601 is retracted, and then drives the movable plate 602 to retract, the movable plate 602 drives the guide plate 603 to retract, and then the second inclined surface 7011 on the wedge-shaped block 701 and the first inclined surface 6031 on the guide plate 603 press the first connecting plate 604, so that the first connecting plate 604 moves downward, and then the first connecting plate 604 drives the piston rod 106 to move downward, and then the first elastic member 605 stores elastic potential energy, when the guide plate 603 completely passes the first connecting plate 604, the first connecting plate 604 is no longer in contact with the first connecting plate 604, and then the first elastic member 605 releases the elastic potential energy, drives the piston rod 106 to move upward, so that the high-temperature substance in the piston cylinder 104 can be instantaneously released, so as to simulate the actual operation process of the operation of the engine cylinder cover, when resetting, the second electric telescopic rod 601 is started, the telescopic rod of the second electric telescopic rod 601 is extended, and then drives the guide plate 603 to extend, and then the first connecting plate 604 presses the third inclined surface 7012 on the wedge-shaped block 701, and then the wedge-shaped block 701 presses the third elastic member 702, so that the third elastic member 702 stores elastic potential energy, and then the resetting of the first connecting plate 604 can be completed.

[0032] Further, the environment simulation assembly comprises a temporary storage box 501 fixedly connected to the lower part in the bottom cover 101, a first partition plate 502 is fixedly connected in the temporary storage box 501, the first partition plate 502 divides the temporary storage box 501 into a gas cavity 5011 and a liquid cavity 5012, a gas tank 503 and a water tank 504 are slidingly connected in the temporary storage box 501, the gas tank 503 and the water tank 504 are communicated with the gas cavity 5011 and the liquid cavity 5012 respectively, a plurality of nozzles 505 are uniformly arranged on the gas tank 503 and the water tank 504, a rack 506 is fixedly connected on the gas tank 503 and the water tank 504, a driving motor 507 is installed in the bottom cover 101, a gear 508 is fixedly connected on the output shaft of the driving motor 507, the gear 508 is engaged with the rack 506, the bottom cover 101 is installed on the support 801, a first driving assembly 103 is installed on the support 801, the first driving assembly 103 is specifically an electric sliding rail, an upper cover 102 is installed on the output component of the first driving assembly 103, that is, the upper cover 102 is installed on the sliding block of the electric sliding rail, an environment box 802 is also installed on the support 801, the environment box 802 is divided into a first environment cavity 8021, a second environment cavity 8022 and a third environment cavity 8023 by a second partition plate 803, a stirring device 804 is installed in the first environment cavity 8021, the stirring device 804 is specifically a rotary motor and a stirring rod, that is, the stirring rod is rotatably connected in the first environment cavity 8021, the output shaft of the rotary motor is fixedly connected with the stirring rod, a liquid used for simulating the working environment of the engine cylinder cover, such as water, is filled in the first environment cavity 8021, the first environment cavity 8021 is communicated with the liquid cavity 5012 through a first pump body 805 and a pipeline, a feeding pipe 806 is installed in the second environment cavity 8022 and the third environment cavity 8023, a one-way valve is arranged on the feeding pipe 806, a temperature control device is installed in the second environment cavity 8022 and the third environment cavity 8023, the temperature control device is specifically a temperature control pipe and a temperature controller, the second environment cavity 8022 is communicated with the gas cavity 5011 through a second pump body 807 and a pipeline, the third environment cavity 8023 is communicated with the piston cylinder 104 through a one-way valve and a pipeline, so it can be known that the gas is introduced into the second environment cavity 8022 and the third environment cavity 8023 through the feeding pipe 806, then the gas is heat exchanged by the temperature control device, that is, the gas is heat exchanged with the temperature control pipe, the air in the third environment cavity 8023 is heated, then when the piston plate 105 moves downward, the hot air in the third environment cavity 8023 is sucked into the piston cylinder 104 by the piston plate 105, the liquid and the corresponding gas can be delivered into the gas tank 503 and the water tank 504 through the first pump body 805 and the second pump body 807, and finally sprayed out by the nozzles 505, so the working environment of the engine cylinder cover can be simulated, the driving motor 507 is started, 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 engagement transmission, and then drives the gas tank 503 and the water tank 504 to rotate, and then the nozzles 505 can be rotated,This can make the liquid and gas sprayed from the nozzle 505 more uniform.

[0033] While the present disclosure has been shown and described with reference to certain exemplary embodiments thereof, it will be understood by those skilled in the art that various changes in form and details can be made therein without departing from the spirit and scope of the disclosure as defined by the appended claims and their equivalents. Therefore, the scope of the present disclosure should not be limited to the above-described embodiments, but should be defined by the appended claims and equivalents thereof.

Claims

1. An engine cylinder head strength testing device, characterized in that: The utility model provides a heating test simulation device for engine cylinder cover, including bottom cover (101), the clamping assembly for clamping engine cylinder cover is installed in bottom cover (101), heating test simulation assembly is evenly arranged in bottom cover (101), the firepower surface of engine cylinder cover is contacted with heating test simulation assembly, the upper cover (102) of bottom cover (101) is provided with, the upper cover (102) is driven to realize the up and down movement by first drive component (103), when the upper cover (102) is contacted with bottom cover (101), can form a closed space, bottom cover (101) is installed with the environment simulation assembly that can simulate the environment of engine cylinder cover use, heating test simulation assembly includes the piston cylinder (104) fixedly installed in bottom cover (101), the piston plate (105) is sealed and slidably connected in piston cylinder (104), the piston rod (106) is fixedly connected to the bottom surface of piston plate (105), the contact cylinder (107) that is contacted with the firepower surface of engine cylinder cover is communicated with the top of piston cylinder (104), the seal assembly that can open is arranged between piston cylinder (104) and contact cylinder (107), the test rod (108) for detecting the mechanical strength of engine cylinder cover is installed on seal assembly, piston rod (106) is driven to realize the movement by second drive component, The seal assembly includes a movable ring (201) disposed in the contact cylinder (107), the movable ring (201) has a plurality of connecting rods (202) symmetrically fixed to the bottom surface, the connecting rods (202) extend through the contact cylinder (107) and below the contact cylinder (107), all the connecting rods (202) are 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, the movable ring (201) has a movable cover (205) slidably connected thereto, the movable cover (205) and the movable ring (201) are provided with a second elastic member (206), the movable cover (205) is used to block the piston cylinder (104), and the test rod (108) is installed on the top surface of the movable cover (205).

2. An engine head strength detection device according to claim 1, characterized by: The first guide block (211) and the second guide block (212) are fixedly connected to the upper and lower ends of the contact cylinder (107) respectively, the first guide block (211) and the second guide block (212) are provided with a fourth inclined surface (2100) for guiding the flow of high-temperature substances, the movable cover (205) is provided with a fifth inclined surface (2051) in sealing contact with the second guide block (212) and a sixth inclined surface (2052) for guiding the flow of high-temperature substances.

3. An engine head strength detection apparatus according to claim 1, characterized by: The contact cylinder (107) is provided with a heating cavity (1071), the heating cavity (1071) is installed with a heating coil (301), and the side of the top surface of the contact cylinder (107) in contact with the firepower surface of the engine cylinder cover is provided with a heat-conducting plate (302).

4. An engine head strength detection apparatus according to claim 1, characterized by: The clamping assembly includes a second electric telescopic rod (401) symmetrically installed on the inner side wall of the bottom cover (101), the second electric telescopic rod (401) has a clamping seat (402) fixedly connected to the telescopic rod, the flexible clamps (403) are installed on the side of the clamping seat (402) close to each other, and the clamping seat (402) is provided with a supporting groove (4021) for supporting the engine cylinder cover.

5. An engine head strength detection apparatus as set forth in claim 1 characterized by: The environment simulation assembly comprises a temporary storage box (501) fixedly connected to the lower part of the bottom cover (101), a first partition plate (502) is fixedly connected in the temporary storage box (501), the first partition plate (502) divides the temporary storage box (501) into a gas cavity (5011) and a liquid cavity (5012), a gas tank (503) and a water tank (504) are slidingly connected in the temporary storage box (501), the gas tank (503) and the water tank (504) are communicated with the gas cavity (5011) and the liquid cavity (5012) respectively, the gas tank (503) and the water tank (504) are uniformly provided with nozzles (505), the gas tank (503) and the water tank (504) are fixedly connected with a rack (506) together, a driving motor (507) is installed in the bottom cover (101), a gear (508) is fixedly connected to the output shaft of the driving motor (507), and the gear (508) is engaged with the rack (506).

6. An engine head strength detection apparatus as set forth in claim 5 characterized by: The second driving assembly comprises 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 the two 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 arranged between the first connecting plate (604) and the piston cylinder (104), a first inclined surface (6031) matched with the first connecting plate (604) is arranged on one side surface of the guide plate (603), a reset slot (6032) for resetting the guide plate (603) is arranged on the guide plate (603), and a limiting assembly is arranged in the reset slot (6032).

7. An engine head strength detection apparatus as set forth in claim 6 characterized by: The limiting assembly comprises a wedge-shaped block (701) slidingly connected to the reset slot (6032), a third elastic member (702) is arranged between the wedge-shaped block (701) and the guide plate (603), a second inclined surface (7011) matched with the first inclined surface (6031) is arranged on one side surface of the wedge-shaped block, and a third inclined surface (7012) for resetting the first connecting plate (604) is arranged on the other side surface of the wedge-shaped block.

8. An engine head strength detection apparatus as set forth in claim 7 characterized by: The bottom cover (101) is installed on the support (801), the first driving assembly (103) is installed on the support (801), the output part of the first driving assembly (103) is installed with the upper cover (102), the support (801) is further installed with the environmental box (802), the environmental box (802) is divided into the first environmental cavity (8021), the second environmental cavity (8022) and the third environmental cavity (8023) by the second partition (803), the stirring device (804) is installed in the first environmental cavity (8021), the first environmental cavity (8021) is connected with the liquid cavity (5012) through the first pump body (805) and the pipeline, the feeding pipe (806) is installed in the second environmental cavity (8022) and the third environmental cavity (8023), the one-way valve is arranged on the feeding pipe (806), the temperature control device is installed in the second environmental cavity (8022) and the third environmental cavity (8023), the second environmental cavity (8022) is connected with the gas cavity (5011) through the second pump body (807) and the pipeline, the third environmental cavity (8023) is connected with the piston cylinder (104) through the one-way valve and the pipeline.

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