Automatic hydraulic oversize hatch cover

Abstract

The utility model belongs to the technical field of ship engineering, and particularly relates to an automatic hydraulic oversize hatch cover which comprises a base, a footstand and a hatch cover body. The hatch cover body comprises a main hatch cover and a folding part hatch cover, and the adjacent ends of the main hatch cover and the folding part hatch cover are hinged to each other; the other end of the main hatch cover is hinged to the footstand; the automatic hydraulic system is used for jacking or putting down the main hatch cover; the automatic locking system is used for locking the hatch cover body; and the emergency manual operation system is used for locking the hatch cover body when the automatic locking system fails. The opening and closing process of the hatch cover body is completely automatic, the manpower demand and the operation time are greatly reduced, and the hatch cover can quickly respond to an operation command to realize quick opening and closing; therefore, the overall operation reliability is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of ship engineering, especially relating to the design, manufacture and operation technologies of ship hatch covers, so as to improve the sealing performance, safety and operation efficiency of large ship hatches. Background Art

[0002] Traditional hatch cover designs usually adopt manual or semi-automatic operating systems, and these designs have various limitations in large ships. First of all, manually operated hatch covers usually require a large amount of manpower and time to open or close, which is particularly disadvantageous in emergency situations. Secondly, although the semi-automatic system improves the operation efficiency, it still relies on manual monitoring and control, increasing the risk of errors during the operation process. In addition, traditional hatch covers also have deficiencies in terms of sealing performance. Especially when facing bad sea conditions, the sealing effect is often not ideal, which increases the risk of water ingress into the ship and damage to the cargo.

[0003] Considering these problems, there is an urgent need in the field of ship engineering for a hatch cover solution that can not only operate automatically to improve efficiency but also ensure good sealing performance in various marine environments. Therefore, the patent of this utility model aims to provide a fast, efficient and safe way to operate the hatch cover by integrating an advanced automatic hydraulic system, while ensuring excellent sealing performance in bad sea conditions, overcoming the limitations of the prior art and meeting the requirements of modern large ships. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an automatic hydraulic extra-large hatch cover, aiming to improve the sealing performance and operation efficiency of the hatch cover. This hatch cover mainly includes a hatch cover body made of high-strength materials, an automatic hydraulic system, an automatic locking system and an emergency manual operating system, realizing the fast, efficient and safe operation of the hatch cover and effectively solving the sealing problem, thus meeting the requirements of modern large ships.

[0005] The purpose of the utility model is achieved as follows:

[0006] An automatic hydraulic extra-large hatch cover, comprising:

[0007] A base, which is arranged at the hatch of the ship's cabin; sliding tracks are arranged on both sides of the base in the length direction or width direction;

[0008] A pedestal, which is arranged at the front side of the base;

[0009] A hatch cover body, which covers the upper part of the base; the hatch cover body includes a main hatch cover and a folding part of the hatch cover, and the adjacent ends of the main hatch cover and the folding part of the hatch cover are hinged to each other; the other end of the main hatch cover is hinged to the pedestal, and rollers are arranged on the lower side of the other end of the folding part of the hatch cover, and the rollers move on the sliding tracks;

[0010] An automatic hydraulic system for lifting or lowering the main hatch cover.

[0011] An automatic locking system for locking the hatch cover body when it is closed.

[0012] An emergency manual operating system for locking the hatch cover body when the automatic locking system fails.

[0013] Preferably, the automatic hydraulic system includes:

[0014] A hydraulic cylinder for driving the opening and closing of the hatch cover body.

[0015] One or more first sensor assemblies for detecting the sealing state of the hatch cover body.

[0016] A control unit for controlling the operation of the hydraulic cylinder.

[0017] Preferably, the first sensor assembly is installed on the main hatch cover and is located between the main hatch cover and the folding part of the hatch cover; when the main hatch cover and the folding part of the hatch cover are aligned and in the same plane, the detection end of the first sensor assembly is squeezed by the hinge end of the folding part of the hatch cover and triggers an induction signal.

[0018] Preferably, it further includes an automatic locking system to achieve physical locking and effectively avoid accidental opening caused by ship vibration.

[0019] Preferably, the height of the footrest and the base is the same.

[0020] Preferably, the hatch cover body is made of high-strength materials, including steel alloys, aluminum alloys, carbon fiber reinforced plastics, and glass fiber reinforced plastics.

[0021] Preferably, the surface of the hatch cover body is coated with an anti-corrosion coating.

[0022] Preferably, the automatic locking system includes four groups of locking devices distributed at the four corners of the hatch cover body; each locking device includes:

[0023] A locked block that is connected to the hatch cover body.

[0024] A locking arm assembly fixedly installed on the side of the base.

[0025] A hydraulic or electric drive for driving the locking arm assembly to clamp or release the locked block.

[0026] Preferably, the locking arm assembly includes:

[0027] A support, which is fixed on the base;

[0028] A swing arm, which is hinged to the upper end of the support and can lock the locked block;

[0029] An upper hinge block, which is hinged to the middle part of the swing arm;

[0030] A transmission connecting rod, the upper end of which is fixed in the upper hinge block, and the lower end of which is provided with a cap part;

[0031] A transmission sleeve rod, which is sleeved on the outside of the transmission connecting rod; the cap part of the transmission connecting rod is located outside the transmission sleeve rod;

[0032] A return spring, which is sleeved on the outside of the transmission sleeve rod; one end of the return spring abuts against the upper hinge block, and the other end abuts against an adjusting nut; the adjusting nut is installed on the transmission sleeve rod; the return spring makes the transmission sleeve rod keep abutting against the cap part at the lower end of the transmission connecting rod;

[0033] An adjusting nut, which is screwed on the transmission sleeve rod and is used to adjust the pre-tightening force of the return spring;

[0034] An eccentric wheel, which is arranged on the output shaft of the electric driver; an extension part is arranged at the lower end of the transmission sleeve rod, and the extension part is hinged to the side part of the eccentric wheel; when the eccentric wheel rotates, the transmission sleeve rod drives the transmission connecting rod, and the transmission connecting rod drives the swing arm.

[0035] Preferably, a first arc surface part is arranged at the upper end of the support, and a hinge groove is arranged on one side of the first arc surface part;

[0036] A second arc surface part is arranged at the lower end of the swing arm, and a hinge convex strip is arranged on one side of the second arc surface part; the hinge convex strip is embedded in the hinge groove and is hinged through a pin shaft; the first arc surface part and the second arc surface part take the pin shaft as the central axis;

[0037] A manual locking block is further arranged on the support, and the manual locking block is a U-shaped part; when the swing arm is manually and forcibly pressed downwards, the transmission connecting rod extends downwards out of the transmission sleeve rod, and a clamping cavity is formed between the cap part of the transmission connecting rod and the lower end of the transmission sleeve rod; the manual locking block is placed into the clamping cavity, and the U-shaped notch of the manual locking block is clamped into the transmission sleeve rod so that the swing arm is kept in a locked state.

[0038] The prominent and beneficial technical effects of the present utility model compared with the prior art are:

[0039] 1. The hatch cover of the present utility model is equipped with a fully automated hydraulic control system. This means that the opening and closing processes of the hatch cover are completely automated, significantly reducing the manpower requirements and operation time. Compared with traditional manual or semi-automatic systems, this greatly improves the overall operation efficiency. At the same time, due to the design of the hydraulic system, the hatch cover can quickly respond to operation commands and achieve rapid opening and closing. This is particularly crucial for scenarios where the cargo hold needs to be quickly opened and closed in case of emergencies. The automated system also reduces the possibility of human operation errors, thereby enhancing the overall operation reliability.

[0040] 2. The hatch cover of the present utility model has an automatic locking mechanism to ensure that when in the closed state, the hatch cover is firmly locked, preventing accidental opening during navigation. This mechanism is especially suitable for preventing accidents under harsh ocean conditions and improves the safety of navigation. On the other hand, in case of situations such as hydraulic system failure or power supply interruption, an emergency manual operation system can be activated. This ensures that even in extreme cases, the operation of the hatch cover can still maintain continuity and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following-described drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0042] Figure 1 It is a perspective view of the hatch cover of the present utility model in the open state.

[0043] Figure 2 It is a side view of the hatch cover of the present utility model in the open state.

[0044] Figure 3 It is a schematic diagram of the hatch cover of the present utility model in the flattened state.

[0045] Figure 4 It is Figure 1 An enlarged view of part A of

[0046] Figure 5 It is Figure 2 An enlarged view of part B of

[0047] Figure 6 It is one of the schematic diagrams of the locking device of the present utility model.

[0048] Figure 7 It is another schematic diagram of the locking device of the present utility model.

[0049] Figure 8It is the third schematic diagram of the locking device of the present utility model.

[0050] Figure 9 It is the exploded view of the components of the locking device of the present utility model.

[0051] Figure 10 It is the schematic diagram of the principle of the present utility model.

[0052] Figure 11 It is the schematic diagram of the principle of the automatic locking system of the present utility model. Specific embodiments

[0053] The embodiment of the present utility model provides an automatic hydraulic super-large hatch cover, which can realize fast, efficient and safe hatch cover operation, while ensuring excellent sealing performance in severe sea conditions, meeting the requirements of modern large ships.

[0054] In order to make the utility model purpose, features and advantages of the present utility model more obvious and understandable, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the embodiments described below are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present utility model. The present utility model will be further described below with specific embodiments:

[0055] As Figures 1-11 shown, an automatic hydraulic super-large hatch cover includes:

[0056] A base 10, which is arranged at the hatch of the cabin; sliding tracks 101 are arranged on both sides of the base in the length direction or width direction;

[0057] A footrest 11, which is arranged at the front side of the base 10;

[0058] A hatch cover body 15, which covers the upper part of the base; the hatch cover body includes a main hatch cover 13 and a folding part hatch cover 14, and the adjacent ends of the main hatch cover 13 and the folding part hatch cover 14 are hinged to each other; the other end of the main hatch cover 13 is hinged to the footrest 11, and a roller 20 is arranged on the lower side of the other end of the folding part hatch cover 14, and the roller 20 moves on the sliding track 101; the roller 20 and the sliding track 101 cooperate to ensure that the hatch cover body 15 is relatively smooth during the opening process;

[0059] An automatic hydraulic system, which is used to lift the main hatch cover 13 or lower the main hatch cover 13;

[0060] An automatic locking system for locking the hatch cover when the hatch cover is closed;

[0061] An emergency manual operating system for locking the hatch cover when the automatic locking system fails.

[0062] Preferably, the automatic hydraulic system includes:

[0063] A hydraulic cylinder for driving the opening and closing of the hatch cover;

[0064] A first sensor assembly 103 for detecting the sealing state of the hatch cover;

[0065] A control unit for controlling the operation of the hydraulic cylinder.

[0066] A hinge seat 131 is provided at the front end of the main hatch cover 13, and the front end of the hinge seat is hinged to the upper end of the footrest 11; the hydraulic cylinder 12 includes a cylinder body and a piston rod; the lower end of the cylinder body is hinged to the base, and the piston rod extends upward and is hinged to the lower side of the middle of the hinge seat 131. A sealing strip 132 is further provided on the end face of the main hatch cover 13. When the main hatch cover 13 and the folding part hatch cover 14 are flush, the sealing strip is squeezed and sealed by the main hatch cover 13 and the folding part hatch cover 14.

[0067] The hydraulic cylinder 12, as the core power source of the automatic hydraulic system, is responsible for driving the opening and closing of the hatch cover 15. Its telescopic function is controlled by hydraulic pressure to ensure the smooth movement of the hatch cover. The control unit includes a control valve and a microprocessor, which are responsible for directing the operation of the entire hydraulic system. The control unit receives data from sensors and adjusts the actions of the hydraulic cylinder 12 accordingly to achieve precise position adjustment of the hatch cover and optimize the sealing effect. The first sensor assembly includes a position sensor and a seal status monitoring sensor, which continuously monitor the position and sealing condition of the hatch cover to ensure the best sealing effect under different marine environments. First, during the startup phase, when the operator issues a closing command, the hydraulic system is activated, and the hydraulic cylinder 12 starts to extend and retract, driving the hatch cover 15 towards the predetermined position. Then, when the hatch cover approaches the closed position, the first sensor assembly 103 monitors the real-time position and sealing status, and the microprocessor makes dynamic adjustments based on the data of the first sensor assembly 103 to optimize the closing angle and sealing pressure of the hatch cover. Finally, once the hatch cover reaches the fully closed state, the microprocessor sends a signal to the automatic locking system to activate the physical lock. At the same time, the automatic hydraulic system of the hatch cover of the present utility model is integrated with highly sensitive seal monitoring sensors. These first sensor assemblies 103 can detect the sealing status of the hatch cover in real time. When the system detects incomplete sealing or signs of damage, the microprocessor receives the signal of abnormal sealing and immediately adjusts the thrust of the hydraulic cylinder 102 or changes the closing angle of the hatch cover. This automatic adjustment aims to restore or optimize the sealing effect to ensure the integrity and functionality of the hatch cover. This function is particularly applicable to coping with harsh sea conditions, such as high waves or strong winds. Under these extreme conditions, the hatch cover may experience minor displacement or deformation due to external forces, which may affect the sealing performance. The automatic hydraulic system of the present utility model can quickly respond to changes in the external environment through a dynamic adjustment mechanism to maintain the stability of the sealing effect. This not only improves the reliability of the hatch cover but also ensures the safety of the ship and its cargo.

[0068] Preferably, the first sensor assembly is mounted on the main hatch cover 13 and is located between the main hatch cover 13 and the folding part hatch cover 14; when the main hatch cover 13 and the folding part hatch cover 14 are aligned and in the same plane, the detection end of the first sensor assembly is squeezed by the hinge end of the folding part hatch cover 14 to trigger an induction signal. The first sensor assembly 103 continuously monitors the position and sealing status of the hatch cover, and the microprocessor makes automatic fine-tuning based on the monitoring data to ensure the best sealing effect of the hatch cover.

[0069] Preferably, the height of the footrest 11 is the same as that of the base 10.

[0070] Preferably, the hatch cover body is made of high-strength materials, including high-strength steel alloys (AH36, DH36), aluminum alloys (5052, 5083), and composite materials (carbon fiber reinforced plastics, glass fiber reinforced plastics).

[0071] Preferably, the surface of the hatch cover body is coated with an anti-corrosion coating.

[0072] Preferably, an automatic locking system is further included to achieve physical locking and effectively prevent accidental opening caused by ship vibration. The automatic locking system includes four sets of locking devices distributed at the four corners of the hatch cover body; each locking device includes:

[0073] A locked block 81, which is connected to the hatch cover body; the locked block 81 is a semi-circular ring of metal welded to the hatch cover body;

[0074] A locking arm assembly, which is fixedly installed on the side of the base;

[0075] A hydraulic or electric drive 93, which drives the locking arm assembly to clamp or release the locked block; the electric drive is a motor or can also be a hydraulic rotary motor.

[0076] The locking arm assembly includes:

[0077] A support 83, which is fixed on the base 10;

[0078] A swing arm 82, which is hinged to the upper end of the support 83 and can lock the locked block 81;

[0079] An upper hinge block 86, which is hinged to the middle of the swing arm 82; an upper hinge shaft 824 is provided on one side of the swing arm 82, and the upper hinge block 86 is sleeved on the upper hinge shaft 824 and fixed by a screw 861;

[0080] A transmission connecting rod 88, the upper end of which is fixed inside the upper hinge block 86, and the lower end of which is provided with a cap portion 881;

[0081] A transmission sleeve rod 84, which is sleeved outside the transmission connecting rod 88; the cap portion of the transmission connecting rod 881 is located outside the transmission sleeve rod 84;

[0082] A return spring 85 is sleeved outside the transmission sleeve rod 84. One end of the return spring 85 abuts against the upper hinge block 86, and the other end abuts against the adjusting nut 89. The adjusting nut 89 is installed on the transmission sleeve rod 84. The return spring 85 keeps the transmission sleeve rod 84 abutted against the cap portion 881 at the lower end of the transmission connecting rod 88. The upper end of the return spring 85 is smaller, and the lower end is larger. When subjected to an external force, the upper part deforms first, and then the lower part deforms, making compression easier. The elastic force of the return spring is preferably such that it can be easily compressed when pressed by an adult. In this embodiment, it can be selected that when a force of 30KG is applied, the return spring can be compressed. A first gasket 862 and a second gasket 863 are also provided between the upper hinge block 86 and the upper end of the return spring. A third gasket 891 is provided between the adjusting nut 89 and the lower end of the return spring. The gaskets are used to prevent wear at the upper and lower ends of the return spring.

[0083] An adjusting nut 89 is threadedly connected to the transmission sleeve rod 84 and is used to adjust the pre-tightening force of the return spring 85.

[0084] An eccentric wheel 91 is provided on the output shaft of the electric drive and rotates with the output shaft. The lower end of the transmission sleeve rod 84 is provided with an extension portion 841, and the extension portion 841 is hinged to the lower hinge shaft 912 on the side of the eccentric wheel and fixed by a screw 913. When the eccentric wheel 91 rotates, the eccentric wheel 91 drives the transmission sleeve rod to move up or down, and the transmission sleeve rod then drives the transmission connecting rod to move up or down synchronously. The transmission connecting rod drives the swing arm to perform the locking or opening action. The return spring 85 ensures that the transmission sleeve rod and the transmission connecting rod can be linked.

[0085] The upper end of the support 83 is provided with a first arc surface portion 831, and an articulated groove 832 is provided on one side of the first arc surface portion 831.

[0086] The lower end of the swing arm 82 is provided with a second arc surface portion 822, and an articulated rib 823 is provided on one side of the second arc surface portion 822. The articulated rib 823 is embedded in the articulated groove 832 and is articulated by a pin shaft 84. The first arc surface portion 831 and the second arc surface portion 822 are centered on the pin shaft 87. This design enables the swing arm 82 to be better supported by the support 83 when it rotates.

[0087] A manual locking block 92 is further provided on the support, and the manual locking block is a U-shaped part; when the swing arm 82 is manually forced to be pressed downwards, a labor-saving lever has been formed; the transmission connecting rod 88 extends downwards from the transmission sleeve rod 84, and a clamping cavity 90 is formed between the cap portion 881 of the transmission connecting rod and the lower end of the transmission sleeve rod 84; the manual locking block 92 is placed into the clamping cavity 90, and the U-shaped notch of the manual locking block is clamped into the transmission sleeve rod 88 so that the swing arm is kept in a locked state. When the hydraulic or electric drive 93 fails, the swing arm 82 cannot be automatically locked by the locking block 81; at this time, the crew can press the upper part of the swing arm 82 to make the transmission connecting rod 88 move downwards, the cap portion 881 at the lower end of the transmission connecting rod 88 is separated from the transmission sleeve rod 84, and then the manual locking block 92 is placed in the corresponding position so that the transmission connecting rod 88 cannot be reset, and the manual locking of the swing arm 82 can be completed. The transmission connecting rod 88 itself is inclined downwards, and under the action of the return spring, the manual locking block 92 will be clamped by the cap portion at the lower end of the transmission sleeve rod 88 and is not easy to shift.

[0088] A second sensor assembly 104 is provided on the base, and the second sensor assembly 104 is used to detect the position of the swing arm 82; when the swing arm locks the locked block, the second sensor assembly sends a signal to the microprocessor, and the background display can display the current locking state.

[0089] "Extra-large" described in this article refers to the tonnage of the ship. A ship with a tonnage of more than 10,000 tons is an extra-large ship.

[0090] The above embodiments are only the preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. An automatic hydraulic oversized hatch cover, characterized in that: include: A base (10) is arranged at the hatch of the cabin; sliding rails (101) are arranged on both sides of the base in the length direction or the width direction; A foot base (11) disposed on the front side of the base (10); A hatch cover body (15) is arranged on the upper part of the base; the hatch cover body comprises a main hatch cover (13) and a folding hatch cover (14), and the adjacent ends of the main hatch cover (13) and the folding hatch cover (14) are hinged to each other; the other end of the main hatch cover (13) is hinged to the foot seat (11), and a roller (20) is arranged on the lower side of the other end of the folding hatch cover (14), and the roller (20) moves on the sliding track (101); An automatic hydraulic system for raising or lowering the main hatch cover (13); an automatic locking system for locking the hatch cover body when the hatch cover body is closed; An emergency manual operating system is used to lock the hatch cover body when the automatic locking system fails.

2. The automatic hydraulic oversized hatch cover according to claim 1, characterized in that: The automatic hydraulic system includes: A hydraulic cylinder (12) for driving the hatch cover to open and close; A first sensor assembly (103) for detecting a sealing state of the hatch cover; A control unit, which is used to control the action of the hydraulic cylinder; The front end of the main hatch cover (13) is provided with a hinge seat (131), and the front end of the hinge seat is hinged to the upper end of the foot seat (11); The hydraulic cylinder (12) comprises a cylinder body and a piston rod; the lower end of the cylinder body is hinged on the base, and the piston rod extends upward and is hinged on the lower side of the middle of the hinge seat (131).

3. The automatic hydraulic oversized hatch cover according to claim 2, characterized in that: The first sensor assembly (103) is mounted on the main hatch cover (13) and is located between the main hatch cover (13) and the folding hatch cover (14); when the main hatch cover (13) and the folding hatch cover (14) are aligned and in the same plane, the detection end of the first sensor assembly is squeezed by the hinged end of the folding hatch cover (14) and triggers a sensing signal; A sealing strip (132) is also provided on the end surface of the main hatch cover (13). When the main hatch cover (13) and the folding hatch cover (14) are flush, the sealing strip is squeezed and sealed by the main hatch cover (13) and the folding hatch cover (14).

4. The automatic hydraulic oversized hatch cover according to claim 3, characterized in that: The footrest (11) and the base (10) are at the same height.

5. The automatic hydraulic oversized hatch cover according to claim 3, characterized in that: The hatch cover body is made of high-strength materials, which include steel alloy, aluminum alloy, carbon fiber reinforced plastic and glass fiber reinforced plastic.

6. The automatic hydraulic oversized hatch cover according to claim 3, characterized in that: The surface of the hatch cover body is coated with an anti-corrosion coating.

7. The automatic hydraulic oversized hatch cover according to claim 3, characterized in that: The automatic locking system comprises four sets of locking devices, which are distributed at the four corners of the hatch cover body; each locking device comprises: A locked block (81) connected to the hatch cover body; A locking arm assembly fixedly mounted on a side of the base; A hydraulic or electric driver (93) drives the locking arm assembly to lock or release the locked block (81).

8. The automatic hydraulic oversized hatch cover according to claim 7, characterized in that: The locking arm assembly comprises: A support (83) fixed on the base (10); A swing arm (82) is hinged to the upper end of the support (83) and can lock the locked block (81); An upper hinge block (86) hinged to the middle of the swing arm (82); A transmission connecting rod (88), the upper end of which is fixed in the upper hinge block and the lower end of which is provided with a cap portion (881); A transmission sleeve rod (84) is sleeved on the outside of the transmission connecting rod (88); the cap portion of the transmission connecting rod (88) is located on the outside of the transmission sleeve rod (84); a return spring (85) which is sleeved on the outside of the transmission sleeve (84); one end of the return spring abuts against the upper hinge block (86), and the other end abuts against the adjustment nut (89); the return spring enables the transmission sleeve (84) to remain abutted against the cap at the lower end of the transmission connecting rod (88); An adjusting nut (89) is threadedly connected to the transmission sleeve (84) and is used to adjust the preload force of the return spring (85); An eccentric wheel (91) is arranged on the output shaft of the hydraulic or electric drive; an extension portion (841) is arranged at the lower end of the transmission sleeve, and the extension portion is hinged to the side of the eccentric wheel (91); when the eccentric wheel rotates, the transmission sleeve (84) drives the transmission connecting rod (88), and the transmission connecting rod drives the swing arm (82).

9. The automatic hydraulic oversized hatch cover according to claim 8, characterized in that: The upper end of the support (83) is provided with a first arc surface (831), and a hinge groove (832) is provided on one side of the first arc surface; The lower end of the swing arm is provided with a second arc surface (822), and one side of the second arc surface is provided with a hinge convex strip (823); the hinge convex strip (823) is embedded in the hinge groove (832) and is hinged through a pin shaft (87); the first arc surface and the second arc surface rotate relatively with the pin shaft as the central axis; The support is also provided with a manual locking block (92), which is a U-shaped piece; when the swing arm (82) is pressed downward manually, the transmission connecting rod extends downward from the transmission sleeve rod, and a locking cavity (90) is formed between the cap portion of the transmission connecting rod and the lower end of the transmission sleeve rod; the manual locking block is placed in the locking cavity, and the U-shaped notch of the manual locking block is locked into the transmission sleeve rod so that the swing arm remains in a locked state.

10. The automatic hydraulic oversized hatch cover according to claim 9, characterized in that: A second sensor assembly (104) is arranged on the base, and the second sensor assembly (104) is used to detect the position of the swing arm (82); when the swing arm locks the locked block, the second sensor assembly sends a signal to the microprocessor.

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