An installation and adjustment method for a large hatch cover

Abstract

The present invention discloses a method for assembling and adjusting a large hatch cover, which belongs to the technical field of hatch covers. The assembly and adjustment method comprises: according to the design requirements of the hatch cover, fixing the lower cover of each half hatch cover to the first fulcrum of the flip arm, and hingedly connecting the second fulcrum of each flip arm to the cabin body. A plurality of groups of folding mechanisms are provided, and the plurality of groups of folding mechanisms are arranged at intervals. The stud bolts and the adjusting rods are adjusted so that the corresponding flip arms and the corresponding upper covers rotate, and the outer contours of the two half hatch covers are calibrated by positioning tooling to ensure that the two half hatch covers reach the closed and unfolded state; according to the length of each adjusting rod, the oil cylinder of the corresponding stroke is matched, and the oil cylinder replaces the corresponding adjusting rod. The embodiment of the present invention provides a method for assembling and adjusting a large hatch cover, which can not only eliminate the manufacturing errors of the components during the assembly process, but also ensure the accuracy of the hatch cover in the closed state.

Description

Technical Field

[0001] The present invention belongs to the technical field of hatch covers, and more particularly, relates to a method for assembling and adjusting a large hatch cover. Background Art

[0002] The hatch cover consists of two half hatch covers (i.e. left hatch cover and right hatch cover) and two flip arms (left flip arm and right flip arm). The two half hatch covers and the two flip arms correspond one to one and are arranged axially symmetrically. Each half hatch cover includes an upper cover and a lower cover that are hingedly connected. The lower cover is fixedly connected to the corresponding flip arm. By flipping the flip arm and folding the upper cover, the hatch cover has the function of folding in half.

[0003] Hatch covers are large in size, and conventional installation and adjustment methods are difficult to ensure accurate closing and unfolding of the hatch covers due to manufacturing errors. Therefore, it is necessary to find an effective method to meet the installation and adjustment requirements of large hatch covers. Summary of the Invention

[0004] In response to the above-mentioned defects or improvement needs of the prior art, the present invention provides a method for assembling and adjusting a large hatch cover, the purpose of which is not only to eliminate the manufacturing errors of various components during the assembly process, but also to ensure the accuracy of the hatch cover in the closed state.

[0005] The present invention provides a method for assembling and adjusting a large hatch cover, the method comprising:

[0006] According to the design requirements of the hatch cover, the lower cover of each half hatch cover is fixedly connected to the first fulcrum of the flip arm, and the second fulcrum of each flip arm is hinged to the cabin body. The hatch cover includes two half hatch covers, each half hatch cover includes an upper cover and a lower cover, and one end of each upper cover is hinged to one end of the lower cover;

[0007] A plurality of folding mechanisms are provided, and the plurality of folding mechanisms are arranged at intervals, each of the folding mechanisms includes two folding units symmetrically arranged along the central axis, each folding unit includes a folding member and an adjusting rod, the folding member includes a ball screw, a stud bolt and a joint, the ball screw is hinged to the lower cover, the joint is hinged to the upper cover, the two ends of the stud bolt are respectively threadedly engaged with the output end of the ball screw and the joint, the adjusting rod is a rod with adjustable length, one end of the adjusting rod is hinged to the cabin body, and the other end of the adjusting rod is hinged to the corresponding third fulcrum of the flip arm;

[0008] Adjust the lengths of the stud bolts and the adjusting rods to rotate the corresponding flip arms and the corresponding upper covers, and calibrate the outer contours of the two half hatch covers using a positioning fixture to ensure that the two half hatch covers reach a closed and unfolded state;

[0009] According to the length of each adjusting rod, a cylinder with a corresponding stroke is matched, and the cylinder replaces the corresponding adjusting rod. One end of the cylinder is hinged to the cabin body, and the other end of the cylinder is hinged to the third fulcrum of the corresponding flip arm.

[0010] Optionally, the adjusting rod includes an axis rod and two joint shafts, both ends of the axis rod are coaxially inserted into one end of the two joint shafts and threadedly engaged, and the other ends of the two joint shafts are respectively hinged to the cabin body and the corresponding third fulcrum of the flip arm.

[0011] Optionally, nuts are respectively sleeved on both ends of the shaft, the nuts are respectively engaged with the threads of the shaft, and each nut is against the corresponding joint shaft.

[0012] Optionally, each of the joint shafts includes a shaft tube and a connecting head, the inner wall of one end of the shaft tube has a thread that cooperates with the shaft rod, and the connecting head is inserted into the other end of the shaft tube, and the connecting head is used to hinge the cabin body or the corresponding third fulcrum of the flip arm.

[0013] Optionally, the positioning tooling is a C-shaped structure, comprising a connecting plate and two side plates, the two ends of the connecting plate being movably connected to the two side plates respectively, with a spacing between the two side plates, and an end of each side plate facing away from the connecting plate having a avoidance hole for accommodating a flip arm, and the inner contour of the positioning tooling is consistent with the outer contour of the two half-hatch covers in the closed and unfolded state.

[0014] Optionally, both ends of the connecting plate have waist-shaped holes respectively, and each side plate is inserted with a connecting bolt at one end facing the connecting plate, and the connecting bolt can be movably inserted in the waist-shaped hole to connect the connecting plate and the corresponding side plate.

[0015] Optionally, each side plate has an aluminum angle piece on the inner side of one end facing away from the connecting plate, and two aluminum angle pieces are arranged in parallel and spaced apart.

[0016] Optionally, each of the side panels has a plurality of weight-reducing holes arranged at intervals.

[0017] Optionally, according to the length of each adjusting rod, a cylinder with a corresponding stroke is matched, and the cylinder replaces the corresponding adjusting rod, one end of the cylinder is hinged to the cabin, and the other end of the cylinder is hinged to the third fulcrum of the corresponding flip arm, and the adjustment method further includes:

[0018] The hatch cover is subjected to multiple operations of opening, folding and closing and unfolding functions to verify the repeatability of the hatch cover.

[0019] The technical solution provided by the embodiment of the present invention has the following beneficial effects:

[0020] A method for installing and adjusting a large hatch cover provided in an embodiment of the present invention includes the following steps: first, according to hatch cover design requirements, the lower cover of each half hatch cover is fixedly connected to the first fulcrum of a flip arm, and the second fulcrum of each flip arm is hinged to the hatch cover. The hatch cover comprises two half hatch covers, each half hatch cover comprising an upper cover and a lower cover, one end of each upper cover being hinged to one end of the lower cover. A plurality of folding mechanisms are then provided, the plurality of folding mechanisms being spaced apart, each folding mechanism comprising two folding units symmetrically arranged along a central axis, each folding unit comprising a folding member and an adjustment rod. The folding member comprises a ball screw, a stud, and a joint. The ball screw is hinged to the lower cover, and the joint is hinged to the upper cover. The ends of the stud are respectively threadedly engaged with the output end of the ball screw and the joint. The adjustment rod is a length-adjustable rod, one end of which is hinged to the hatch cover, and the other end of which is hinged to the third fulcrum of the corresponding flip arm. The hatch cover can be opened, folded, closed, and unfolded by means of the plurality of folding units.

[0021] Next, the lengths of the studs and adjustment rods are adjusted to rotate the corresponding flip arms and corresponding upper covers. The positioning fixture calibrates the outer contours of the two hatch cover halves, ensuring they are in both the closed and extended positions. The studs and adjustment rods allow for precise adjustment of the hatch cover's position and configuration, compensating for manufacturing errors during the assembly process and ensuring precise closing of the hatch covers. Furthermore, the positioning fixture further calibrates the accuracy of the two hatch cover halves in the closed and extended positions, guiding appropriate adjustments. Furthermore, the adjustment rods support, position, and adjust the flip arms during assembly and adjustment, compensating for the lack of stroke adjustment in the hydraulic cylinders. Finally, a hydraulic cylinder with the corresponding stroke is matched to the length of each adjustment rod. The cylinder is then replaced with the corresponding adjustment rod. One end of the cylinder is hinged to the cabin body, and the other end is hinged to the third pivot point of the corresponding flip arm, completing the hatch cover assembly.

[0022] That is, the embodiment of the present invention provides a method for assembling and adjusting a large hatch cover, which can not only eliminate manufacturing errors of various components during the assembly process, but also ensure the accuracy of the hatch cover in the closed state. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a flow chart of a method for assembling and adjusting a large hatch cover provided by an embodiment of the present invention;

[0024] Figure 2 is a structural schematic diagram of a folding mechanism provided by an embodiment of the present invention;

[0025] Figure 3 is a schematic structural diagram of a folding member provided by an embodiment of the present invention;

[0026] Figure 4 1 is a schematic diagram of a large hatch cover in a closed and unfolded state provided by an embodiment of the present invention;

[0027] Figure 5 is a schematic structural diagram of an adjustment rod provided by an embodiment of the present invention;

[0028] Figure 6 It is a structural schematic diagram of the positioning tool provided by an embodiment of the present invention.

[0029] The symbols in the figure mean the following:

[0030] 1. Half hatch cover; 11. Upper cover; 12. Lower cover; 13. Support; 2. Flip arm; 3. Folding mechanism; 31. Folding unit; 311. Folding part; 3111. Ball screw; 3112. Stud bolt; 3113. Joint; 312. Adjusting rod; 3121. Shaft; 3122. Joint shaft; 3123. Nut; 3124. Shaft tube; 3125. Connector; 4. Positioning tool; 41. Connecting plate; 42. Side plate; 43. Connecting bolt; 44. Aluminum angle; 45. Lightening hole; 5. Cylinder. DETAILED DESCRIPTION

[0031] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to illustrate the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0034] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0035] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0036] Figure 1 This is a flow chart of a large hatch cover installation and adjustment method provided by an embodiment of the present invention, such as Figure 1 As shown, the adjustment method includes:

[0037] S101. According to hatch cover design requirements, the lower cover 12 of each half hatch cover 1 is fixedly connected to the first fulcrum a of the flip arm 2, and the second fulcrum b of each flip arm 2 is hinged to the cabin body.

[0038] The hatch cover includes two half hatch covers 1 , each half hatch cover 1 includes an upper cover 11 and a lower cover 12 , and one end of each upper cover 11 is hinged to one end of the lower cover 12 .

[0039] S102 , multiple groups of folding mechanisms 3 are provided, and the multiple groups of folding mechanisms 3 are arranged at intervals.

[0040] Among them, each folding mechanism 3 includes two folding units 31 arranged symmetrically along the central axis, each folding unit 31 includes a folding part 311 and an adjusting rod 312, the folding part 311 includes a ball screw 3111, a stud bolt 3112 and a joint 3113, the ball screw 3111 is hinged on the lower cover 12, and the joint 3113 is hinged on the upper cover 11, and the two ends of the stud bolt 3112 are respectively threadedly matched with the output end of the ball screw 3111 and the joint 3113, and the adjusting rod 312 is a rod with adjustable length, one end of the adjusting rod 312 is hinged to the cabin body, and the other end of the adjusting rod 312 is hinged to the third fulcrum c of the corresponding flip arm 2.

[0041] S103, adjusting the length of the stud bolt 3112 and the adjusting rod 312, so that the corresponding flip arm 2 and the corresponding upper cover 11 rotate, and calibrating the outer contours of the two half hatch covers 1 through the positioning tool 4, so as to ensure that the two half hatch covers 1 reach the closed and unfolded state.

[0042] S104. Match the oil cylinder 5 with the corresponding stroke according to the length of each adjusting rod 312, and replace the corresponding adjusting rod 312 with the oil cylinder 5. One end of the oil cylinder 5 is hinged to the cabin body, and the other end of the oil cylinder 5 is hinged to the third fulcrum of the corresponding flip arm 2.

[0043] Regarding the installation and adjustment method of a large hatch cover provided by an embodiment of the present invention, when installing the hatch cover on the cabin body, first, according to the hatch cover design requirements, the lower cover 12 of each half hatch cover 1 is fixedly connected to the first fulcrum of the flip arm 2, and the second fulcrum of each flip arm 2 is hinged to the cabin body. The hatch cover includes two half hatch covers 1, each half hatch cover 1 includes an upper cover 11 and a lower cover 12, and one end of each upper cover 11 is hinged to one end of the lower cover 12. Then, multiple groups of folding mechanisms 3 are provided, and the multiple groups of folding mechanisms 3 are arranged at intervals. Each folding mechanism 3 includes two folding units 31 arranged symmetrically along the central axis. Each folding unit 31 includes a folding member 311 and an adjustment rod 312 (see Figure 2 ), the folding member 311 includes a ball screw 3111, a stud bolt 3112 and a joint 3113. The ball screw 3111 is hinged on the lower cover 12, and the joint 3113 is hinged on the upper cover 11. The two ends of the stud bolt 3112 are respectively threaded with the output end of the ball screw 3111 and the joint 3113 (see Figure 3 ), the adjusting rod 312 is a rod with adjustable length, one end of the adjusting rod 312 is hinged to the cabin body, and the other end of the adjusting rod 312 is hinged to the third fulcrum of the corresponding flip arm 2, and the cabin cover can be opened, folded, closed and unfolded through multiple folding units 31.

[0044] Next, adjust the length of the stud bolts 3112 and the adjusting rod 312 so that the corresponding flip arm 2 and the corresponding upper cover 11 rotate, and calibrate the outer contours of the two half hatch covers 1 through the positioning fixture 4, so as to ensure that the two half hatch covers 1 reach the closed and unfolded state. On the one hand, the position and state of the half hatch covers 1 can be adjusted by the stud bolts 3112 and the adjusting rod 312 to compensate for the manufacturing errors of each component during the preparation process and ensure that the hatch covers can be closed accurately. On the other hand, the accuracy of the two half hatch covers 1 in the closed and unfolded state can be further calibrated by the positioning fixture 4, and the corresponding adjustment can be guided. In addition, the adjusting rod 312 can support, position and adjust the flip arm 2 during the installation and adjustment process, making up for the problem that the cylinder 5 cannot adjust the stroke. Finally, according to the length of each adjusting rod 312, match the cylinder 5 with the corresponding stroke, and replace the corresponding adjusting rod 312 with the cylinder 5. One end of the cylinder 5 is hinged to the cabin body, and the other end of the cylinder 5 is hinged to the third fulcrum of the corresponding flip arm 2, thereby completing the installation of the hatch cover (see Figure 4 ).

[0045] That is, the embodiment of the present invention provides a method for assembling and adjusting a large hatch cover, which can not only eliminate manufacturing errors of various components during the assembly process, but also ensure the accuracy of the hatch cover in the closed state.

[0046] For example, the multiple ball screws 3111 of the multiple folding units 31 corresponding to each half cover 1 can be linked by multiple worm gears. In addition, the ball screws 3111 are hinged to the lower cover 12 through the support 13, and the joints 3113 are hinged to the upper cover 11 through the support 13.

[0047] Exemplarily, the flip arm 2 is a triangular structural member.

[0048] In order to better understand the structure of the hatch cover of the present invention, the following briefly describes the working process of the hatch cover:

[0049] Opening and folding: After the oil cylinder 5 drives the flip arm 2 to rotate counterclockwise to a certain angle (opening process), the ball screw 3111 causes the upper cover 11 to fold clockwise (folding process).

[0050] Closing and unfolding the cover: the ball screw 3111 causes the upper cover 11 to unfold counterclockwise (unfolding process), and the oil cylinder 5 drives the flip arm 2 to rotate clockwise (closing process).

[0051] After step S104, the adjustment method further includes:

[0052] The hatch cover is opened, folded, closed and unfolded multiple times to verify the repeatability of the hatch cover.

[0053] In the above embodiment, after the installation and adjustment is completed, the closing accuracy of the hatch cover during use can be further verified by opening and folding the hatch cover and closing and unfolding the hatch cover multiple times, so as to further complete the installation and adjustment.

[0054] Figure 5 Schematic diagram of the structure of the adjustment rod provided by the embodiment of the present invention. Figure 5 As shown, the adjustment rod 312 includes a shaft rod 3121 and two joint shafts 3122. The two ends of the shaft rod 3121 are coaxially inserted into one end of the two joint shafts 3122 and threadedly engaged. The other ends of the two joint shafts 3122 are respectively hinged to the cabin body and the corresponding third fulcrum c of the flip arm 2.

[0055] In the above embodiment, the overall length of the adjusting rod 312 can be easily adjusted through the threaded cooperation between the shaft 3121 and the two joint shafts 3122, thereby adjusting the closing angle of the flip arm 2 and eliminating manufacturing errors.

[0056] Furthermore, nuts 3123 are respectively provided at both ends of the shaft 3121. The nuts 3123 are respectively threadedly engaged with the shaft 3121, and each nut 3123 abuts against the corresponding joint shaft 3122. The nuts 3123 can lock the shaft 3121 to prevent the shaft 3121 from rotating accidentally after adjustment.

[0057] Illustratively, each joint shaft 3122 includes a shaft tube 3124 and a connector 3125. The inner circumferential wall of one end of the shaft tube 3124 has threads that mate with the shaft rod 3121. The connector 3125 is inserted into the other end of the shaft tube 3124 and is used to articulate the cabin or the corresponding third fulcrum c of the flip arm 2. The shaft tube 3124 serves to connect to the shaft rod 3121, while the connector 3125 serves as the hinge.

[0058] It should be noted that, in other embodiments of the present invention, the length of the adjusting rod 312 can also be adjusted by sliding fit and bolt locking, and the present invention does not limit this.

[0059] Figure 6 Schematic diagram of the structure of the positioning tool provided by the embodiment of the present invention, such as Figure 6 As shown, the positioning tooling 4 is a C-shaped structure, and the positioning tooling 4 includes a connecting plate 41 and two side plates 42. The two ends of the connecting plate 41 are movably connected to the two side plates 42 respectively, and the spacing between the two side plates 42 is such that the end of each side plate 42 facing away from the connecting plate 41 has a avoidance hole (not shown) for accommodating the flip arm 2, and the inner contour of the positioning tooling 4 is consistent with the outer contour of the two half hatches 1 in the closed and unfolded state.

[0060] In the above embodiment, a template is formed by sliding the two side panels 42 to the target position to detect the outer contours of the two half hatch covers 1 in the closed and unfolded state.

[0061] For example, before use, the distance between the two side panels 42 is adjusted to the maximum. During use, the two side panels 42 are adjusted to the target position to verify whether the outer contours of the two half-hatch covers 1 in the closed and unfolded states are consistent with the inner contours of the positioning fixture 4. If not, continue adjusting the stud bolts 3112 and the adjustment rod 312.

[0062] In this embodiment, both ends of the connecting plate 41 have waist-shaped holes, and each side plate 42 is inserted with a connecting bolt 43 at one end facing the connecting plate 41. The connecting bolt 43 can be movably inserted into the waist-shaped hole to connect the connecting plate 41 and the corresponding side plate 42.

[0063] In the above embodiment, the connecting plate 41 and the side plate 42 can be locked by the connecting bolts 43 to prevent the relative positions of the connecting plate 41 and the side plate 42 from being accidentally changed during the verification process.

[0064] For example, each side plate 42 has an aluminum angle piece 44 on the inner side of one end facing away from the connecting plate 41 , and two aluminum angle pieces 44 are arranged in parallel and spaced apart.

[0065] It is easy to understand that the aluminum angle piece 44 can fit tightly with the outer side of the lower cover 12 , thereby confining the two half hatch covers 1 within the positioning fixture 4 .

[0066] Exemplarily, each side panel 42 has a plurality of spaced-apart weight-reducing holes 45 , thereby facilitating adjustment of the position of the side panel 42 and thereby conveniently adjusting the positioning tool 4 .

[0067] It should be noted that the positioning tool 4 can also be set to other structural forms, and the present invention does not limit this.

[0068] It will be easily understood by those skilled in the art that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for assembling and adjusting a large hatch cover, characterized in that: The adjustment method comprises: According to the design requirements of the hatch cover, the lower cover of each half hatch cover is fixedly connected to the first fulcrum of the flip arm, and the second fulcrum of each flip arm is hinged to the cabin body. The hatch cover includes two half hatch covers, each half hatch cover includes an upper cover and a lower cover, and one end of each upper cover is hinged to one end of the lower cover; A plurality of folding mechanisms are provided, and the plurality of folding mechanisms are arranged at intervals, each of the folding mechanisms includes two folding units symmetrically arranged along the central axis, each folding unit includes a folding member and an adjusting rod, the folding member includes a ball screw, a stud bolt and a joint, the ball screw is hinged to the lower cover, the joint is hinged to the upper cover, the two ends of the stud bolt are respectively threadedly engaged with the output end of the ball screw and the joint, the adjusting rod is a rod with adjustable length, one end of the adjusting rod is hinged to the cabin body, and the other end of the adjusting rod is hinged to the corresponding third fulcrum of the flip arm; Adjust the lengths of the stud bolts and the adjusting rods to rotate the corresponding flip arms and the corresponding upper covers, and calibrate the outer contours of the two half hatch covers using a positioning fixture to ensure that the two half hatch covers reach a closed and unfolded state; According to the length of each adjusting rod, a cylinder with a corresponding stroke is matched, and the cylinder replaces the corresponding adjusting rod, one end of the cylinder is hinged to the cabin, and the other end of the cylinder is hinged to the third fulcrum of the corresponding flip arm; The adjusting rod includes a shaft and two joint shafts, the two ends of the shaft are coaxially inserted into one end of the two joint shafts and threadedly engaged, and the other ends of the two joint shafts are respectively hinged to the cabin and the corresponding third fulcrum of the flip arm; Each of the joint shafts includes a shaft tube and a connector, wherein the inner circumferential wall of one end of the shaft tube has a thread that cooperates with the shaft rod, and the connector is inserted into the other end of the shaft tube, and the connector is used to hinge the cabin body or the corresponding third fulcrum of the flip arm; The positioning tooling is a C-shaped structure, and the positioning tooling includes a connecting plate and two side plates. The two ends of the connecting plate are movably connected to the two side plates respectively, and each side plate has an avoidance hole for accommodating a flip arm at one end facing away from the connecting plate, and the inner contour of the positioning tooling is consistent with the outer contour of the two half hatch covers when the covers are closed and unfolded.

2. A method for assembling and adjusting a large hatch cover according to claim 1, characterized in that: Nuts are respectively sleeved on both ends of the shaft rod, and the nuts are respectively engaged with the threads of the shaft rod, and each nut is against the corresponding joint shaft.

3. A method for assembling and adjusting a large hatch cover according to claim 1, characterized in that: Both ends of the connecting plate are provided with waist-shaped holes respectively. A connecting bolt is inserted into one end of each side plate facing the connecting plate. The connecting bolt can be movably inserted into the waist-shaped hole to connect the connecting plate and the corresponding side plate.

4. A method for assembling and adjusting a large hatch cover according to claim 1, characterized in that: An inner side of one end of each side plate facing away from the connecting plate is provided with an aluminum angle piece, and two aluminum angle pieces are arranged in parallel and spaced apart.

5. A method for assembling and adjusting a large hatch cover according to claim 1, characterized in that: Each of the side panels is provided with a plurality of weight-reducing holes arranged at intervals.

6. A method for assembling and adjusting a large hatch cover according to claim 1, characterized in that: According to the length of each adjusting rod, a cylinder with a corresponding stroke is matched, and the cylinder replaces the corresponding adjusting rod, one end of the cylinder is hinged to the cabin, and the other end of the cylinder is hinged to the third fulcrum of the corresponding flip arm, and the adjustment method further includes: The hatch cover is subjected to multiple operations of opening, folding and closing and unfolding functions to verify the repeatability of the hatch cover.

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