Large gate turning-over supporting tool with foldable supporting legs

Abstract

The invention relates to the technical field of gate machining, in particular to a large gate turning-over supporting tool with foldable supporting legs, which comprises two tool clamps, a supporting base is arranged at the lower ends of the two tool clamps, a folding mechanism is arranged at the upper end of the supporting base, and the large gate turning-over supporting tool comprises four supporting brackets and two bidirectional screw rods, the lower ends of the two tool clamps are fixedly connected with first U-shaped supporting plates, the interior of each first U-shaped supporting plate is fixedly connected with a first connecting column, the four supporting brackets are located at the lower ends of the four first connecting columns, the height of the tool can be adjusted through a folding supporting mechanism driven by a two-way lead screw, and the two-way lead screw is synchronously rotated during operation; the movable block and the second U-shaped supporting plate can be driven to move, so that the supporting bracket is stably unfolded, then the tool clamp is controlled to accurately descend to a low position, a worker can more conveniently install the gate, the risk that the gate is collided and deformed is reduced, the installation efficiency is improved, and the potential safety hazard of operation is reduced.

Description

Technical Field

[0001] This invention relates to the field of gate processing technology, and in particular to a large gate turning support fixture with foldable legs. Background Technology

[0002] Large gate turning support fixtures are auxiliary equipment used in water conservancy and hydropower projects to adapt to the turning operation of large gates. They are used to solve the problem that large gates, which weigh tens of tons and are large in size, are prone to safety hazards when turning over. It usually contains two sets of turning support mechanisms. The two ends of the gate can be placed in the turning seat placement slots of the mechanism respectively. The turning seat is connected to the base through a rotating shaft. During operation, it works with the gate crane to use a hinged turning method to achieve smooth turning of the gate. When it is turned to a horizontal state, the positioning pin can pass through the limit plate and the through hole of the rotating shaft to complete the positioning. This fixture can restrain the gate to avoid excessive impact force during turning over, and eliminate the hidden dangers of insecure restraint and falling. Some can be adapted to different sizes of gates by adjusting the structure.

[0003] Currently, existing tooling (such as announcement number: CN113714722B) discloses a welding tooling for the main rail side guard plate of a gate slot embedded part, belonging to the field of gate auxiliary welding technology. It is used to solve the problems of inconvenient fixing and angle adjustment of the main rail side guard plate, and low welding efficiency. It includes two support mechanisms, each comprising a lifting plate with a turntable rotatably mounted on it. A first placement frame and a second placement frame are rotatably mounted between the two support mechanisms. Several locking mechanisms are slidably mounted at both ends of the first and second placement frames, and several locking pressure mechanisms are slidably mounted on the sides of both the first and second placement frames. Adjustment mechanisms are located below both the first and second placement frames. This invention, through the cooperation of the first placement frame, support mechanisms, and second placement frame, allows for adjustment of the welding angle and height, facilitating welding and grinding by welders, reducing welding difficulty, and improving the welding efficiency of the main rail side guard plate.

[0004] However, during the implementation of the above technical solution, at least the following technical problems were discovered: 1. The tooling fixtures are always at a fixed height, while large gates generally weigh tens of tons, are huge in size, and are extremely difficult to lift manually. During installation, additional lifting equipment such as truck cranes and crawler cranes are needed to lift the gate to the height of the fixtures to complete the alignment. This not only increases the rental cost of lifting equipment and the complexity of the operation process, but also increases the risk of gate collision and deformation due to the center of gravity shift and swaying during the lifting of heavy equipment. This reduces installation efficiency and amplifies the safety hazards of operation, and cannot meet the needs of efficient and safe installation of large gates. 2. In the warehousing process, large gate turning support fixtures require a large area of ​​storage space to be reserved separately. When multiple fixtures coexist, the site occupation cost will increase significantly. In the transportation process, the large volume limits the number of fixtures that can be transported in a single trip, requiring more transport vehicles and more transport trips, which increases the logistics transfer cost. Moreover, the fixed structure has poor flexibility and is difficult to adapt to the spatial layout of different work areas. When transferring within the workshop, it is easily restricted by the width of the passage and the site layout, which increases the difficulty and time cost of transfer. Summary of the Invention

[0005] Technical problems to be solved: 1. The tooling fixtures are always at a fixed height, while large gates generally weigh tens of tons, are huge in size, and are extremely difficult to lift manually. During installation, additional lifting equipment such as truck cranes and crawler cranes are required to lift the gate to the height of the fixtures to complete the alignment. This not only increases the rental cost of lifting equipment and the complexity of the operation process, but also increases the risk of gate collision and deformation due to the center of gravity shift and swaying during the lifting of heavy equipment. This reduces installation efficiency and amplifies the safety hazards of operation, and cannot meet the needs of efficient and safe installation of large gates. 2. In the warehousing process, large gate turning support fixtures require a large area of ​​storage space to be reserved separately. When multiple fixtures coexist, the site occupation cost will increase significantly. In the transportation process, the large volume limits the number of fixtures that can be transported in a single trip, requiring more transport vehicles and more transport trips, which increases the logistics transfer cost. Moreover, the fixed structure has poor flexibility and is difficult to adapt to the spatial layout of different work areas. When transferring within the workshop, it is easily restricted by the width of the passage and the site layout, which increases the difficulty and time cost of transfer.

[0006] To address the shortcomings of existing technologies, this invention provides a large gate turning support fixture with foldable legs, thereby solving the technical problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: A large gate turning support fixture with foldable legs includes two fixtures, with a support base at the lower end of the two fixtures and a folding mechanism at the upper end of the support base, including four support brackets and two bidirectional lead screws.

[0008] In one possible implementation, the lower ends of both tooling fixtures are fixedly connected to U-shaped support plates, and each U-shaped support plate is fixedly connected to a connecting column. Four support brackets are located at the lower ends of the four connecting columns, and the upper end of each support bracket is rotatably connected to the connecting column. Two bidirectional lead screws are located at the lower ends of the two tooling fixtures.

[0009] In one possible implementation, each of the four support brackets has a connecting post 2 fitted at its lower end, and each of the four connecting posts 2 has a U-shaped support plate 2 at its lower end. Both ends of the four connecting posts 2 are fixedly connected to the inner wall of the corresponding U-shaped support plate 2.

[0010] In one possible implementation, the lower surfaces of the four U-shaped support plates are all fixedly connected to movable blocks, the two bidirectional lead screws are threadedly connected to the corresponding movable blocks, the two sides of the support base are all fixedly connected to support blocks, the upper surfaces of the two support blocks are all fixedly connected to U-shaped frames, and the interior of the two U-shaped frames is provided with sliding rods.

[0011] In one possible implementation, the upper surfaces of both slide rods are fixedly connected to the U-shaped frame, the lower surfaces of both slide rods are fixedly connected to the support block, and each U-shaped frame is provided with a slider, each slider being movably sleeved with the corresponding slide rod, and the opposite side of each slider being fixedly connected to the side of the tooling fixture facing away from it.

[0012] In one possible implementation, both ends of the two bidirectional lead screws are rotatably connected to connecting short plates, the lower surface of each connecting short plate is fixedly connected to the upper surface of the support base, and a motor is provided on the side surface of the rear bidirectional lead screw.

[0013] In one possible implementation, the end of the motor facing the bidirectional lead screw is fixedly connected to the corresponding connecting short plate, and the output port of the motor passes through the corresponding connecting short plate and is fixedly connected to the bidirectional lead screw.

[0014] In one possible implementation, each of the two bidirectional lead screws has a connecting post three at the end away from the motor. A sprocket is fixedly connected to the surface of each of the two connecting posts three. A synchronous chain is provided between the two sprockets, and both ends of the synchronous chain are engaged with the two sprockets. The sides of the two connecting posts three facing the bidirectional lead screws pass through the connecting short plate and are fixedly connected to the bidirectional lead screws.

[0015] In one possible implementation, a rectangular groove is provided through the side surface of each support bracket, and a sliding rod is provided inside each support bracket. The upper and lower surfaces of each sliding rod are fixedly connected to the inner wall of the corresponding support bracket, and a slider is provided inside each rectangular groove.

[0016] In one possible implementation, each slider 2 is movably connected to the corresponding slider 2, and the upper end of the support base is provided with two flip storage plates, the opposite sides of the two flip storage plates being hinged to the corresponding slider 2.

[0017] Beneficial effects compared to existing technologies: 1. In this solution, the height of the tooling is adjustable through a folding support mechanism driven by a bidirectional screw. During operation, the bidirectional screw rotates synchronously, which can drive the moving block and the U-shaped support plate to shift, so that the support bracket can be smoothly unfolded. This allows the tooling fixture to be precisely lowered to the lowest position, making it easier for workers to install the gate, reducing the risk of gate collision and deformation, improving installation efficiency and reducing operational safety hazards. 2. In this solution, the support bracket can be folded and retracted by reverse driving the lead screw when idle, which greatly reduces the overall volume of the tooling. Compared with the traditional fixed structure, multiple tooling can be compactly stacked after folding, which is especially suitable for production workshops with limited space. The number of items that can be loaded at one time during transportation is increased, reducing the number of transport vehicles and round trips, and significantly reducing logistics costs. At the same time, the compact structure facilitates flexible transfer within the workshop, without being limited by the width of the aisle and the layout of the site, adapting to the space requirements of different work areas, and greatly reducing the overall cost of storage and transfer. 3. In this solution, when the tooling is folded, the flip storage plate is first flipped to a horizontal position parallel to the tooling. The heavy gate is supported by its bearing surface. The initial placement can be completed without raising the gate. When the flip storage plate is pushed, the slider two hinged to it slides smoothly along the slider two in the support bracket, which drives the gate to accurately approach the tooling fixture, making it more convenient for the staff to install the gate. Attached Figure Description

[0018] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the tooling of the present invention when unfolded; Figure 3 This is a schematic diagram of the support structure of the present invention; Figure 4 This is a schematic diagram of the U-shaped frame of the present invention; Figure 5 This is a schematic diagram of the structure of the movable block of the present invention; Figure 6 For the present invention Figure 5 Enlarged structural diagram at point A; Figure 7 This is a schematic diagram of the structure of the flip storage plate of the present invention.

[0020] Legend: 11. Tooling fixture; 12. Support bracket; 13. Support base; 14. U-shaped support plate one; 15. Flip storage plate; 16. Two-way lead screw; 17. Connecting column one; 18. Synchronous chain; 19. Connecting short plate; 20. Moving block; 21. U-shaped support plate two; 22. Rectangular groove; 23. Motor; 24. Slider one; 25. U-shaped frame; 26. Slide rod one; 27. Support block; 28. Connecting column two; 29. ​​Connecting column three; 30. Sprocket; 31. Slider two; 32. Slide rod two. Detailed Implementation

[0021] To more clearly illustrate the overall concept of the present invention, a detailed description is provided below with reference to the accompanying drawings and examples.

[0022] In the description of this invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0023] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0024] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0025] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0026] The technical solution in this application is to address the problem that the aforementioned tooling fixtures are always at a fixed height, while large gates generally weigh tens of tons, are enormous, and are extremely difficult to lift manually. During installation, additional lifting equipment such as truck cranes and crawler cranes are required to lift the gate to the fixture height to complete the alignment. This not only increases the rental cost of lifting equipment and the complexity of the operation process, but also increases the risk of gate collision and deformation due to problems such as center of gravity shift and swaying during the lifting of heavy equipment. This reduces installation efficiency and amplifies operational safety hazards, failing to meet the high-efficiency and safe installation requirements of large gates. In the warehousing stage, the large gate turning support tooling requires a large area of ​​separate storage space, and the coexistence of multiple tools significantly increases site occupation costs. In the transportation stage, the large size limits the number of tools that can be transported at one time, requiring more transport vehicles and more transport trips, increasing logistics and transfer costs. Moreover, the fixed structure has poor flexibility and is difficult to adapt to the spatial layout of different work areas. When transferring within the workshop, it is easily restricted by the width of the passage and the layout of the site, increasing the difficulty and time cost of transfer. The overall approach is as follows: Example: Please refer to Figure 1 and Figure 7As shown in this embodiment, a large gate tilting support fixture with foldable outriggers is introduced. This fixture is an auxiliary equipment used in water conservancy projects for tilting large gates. It typically includes two sets of tilting support mechanisms, with both ends of the gate placed on the mechanisms. The tilting seat is mounted in the base cavity via a rotating shaft. The placement slot of the tilting seat is used to support the gate. The limiting plate and positioning pin of the base can be used to position the tilting seat when it is horizontal. It can work with the gantry crane to achieve a smooth tilting of the large gate using a hinged tilting method, solving the problems of large instantaneous impact and weak constraint in traditional tilting methods. During operation, it can fix the gate to reduce shaking and deformation, avoiding safety hazards such as wire rope breakage and falling. It is suitable for scenarios such as corrosion protection and major repairs of large gates weighing tens of tons. To meet the disassembly and overturning requirements, reduce on-site welding workload, lower the requirements for lifting equipment and personnel proficiency, and improve the efficiency and safety of gate overturning operations, the system includes two tooling fixtures 11. The lower end of the two tooling fixtures 11 is provided with a support base 13, and the upper end of the support base 13 is provided with a folding mechanism, including four support brackets 12 and two bidirectional screw rods 16. The lower end of each of the two tooling fixtures 11 is fixedly connected to a U-shaped support plate 14. Each U-shaped support plate 14 is fixedly connected to a connecting column 17. The four support brackets 12 are located at the lower end of the four connecting columns 17, and the upper end of each support bracket 12 is rotatably connected to the connecting column 17. The two bidirectional screw rods 16 are located at the lower end of the two tooling fixtures 11. Each of the four support brackets 12 has a connecting post 28 fitted at its lower end, and a U-shaped support plate 21 is provided at the lower end of each of the four connecting posts 28. Both ends of the four connecting posts 28 are fixedly connected to the inner wall of the corresponding U-shaped support plate 21. A moving block 20 is fixedly connected to the lower surface of each of the four U-shaped support plates 21. Two bidirectional lead screws 16 are positioned corresponding to the moving blocks 20 and are threadedly connected to the corresponding moving blocks 20. When the two bidirectional lead screws 16 rotate synchronously, the two moving blocks 20 threadedly connected to the bidirectional lead screws 16 will move away from each other along the axial direction of the lead screws. The moving blocks 20 drive the U-shaped support plates 21 fixed to them to move synchronously. The U-shaped support plates 21 will pull the corresponding support brackets 12 smoothly unfold through the connecting posts 28. When the four support brackets 12 unfold, they will drive the corresponding tooling fixtures 11 to move downward, thereby controlling the tooling. The purpose of folding and lowering fixture 11 is to address the pain points of large gates being heavy and difficult to lift manually. In the folded state, the fixture can be lowered as a whole, eliminating the need for additional lifting equipment to raise the gate. Workers can easily align and place the gate onto fixture 11, significantly reducing the labor intensity of installation operations, avoiding safety risks caused by lifting heavy objects, and improving installation efficiency and safety. At the same time, the folding structure greatly reduces the volume of the fixture when idle or during transportation. Compared with traditional fixed support fixtures, it can save a lot of storage space. Multiple fixtures can be compactly stacked for storage, reducing site occupation costs. The compact structure after folding also facilitates flexible transfer within the workshop, adapting to the spatial layout of different work areas. It is especially suitable for production scenarios with limited space, optimizing the flexibility of the work process and reducing the overall cost of storage and transportation, further highlighting the practical value and scenario adaptability of the fixture.

[0027] To ensure greater stability of the tooling fixture 11 during lifting, support blocks 27 are fixedly connected to both sides of the support base 13. U-shaped frames 25 are fixedly connected to the upper surfaces of both support blocks 27. Slide rods 26 are installed inside each U-shaped frame 25, with their upper surfaces and lower surfaces fixedly connected to the support blocks 27. Slider blocks 24 are installed inside each U-shaped frame 25, with each slider 24 movably connected to its corresponding slide rod 26. The opposite side of each slider 24 is fixedly connected to the side of the tooling fixture 11 facing away from it. The support blocks 27 and U-shaped frames 25 on both sides of the support base 13 form a stable support, while the slide rods 26 and sliders 24 form a guiding mechanism, restricting the tooling fixture 11 to lift only in a straight line, preventing deviation and swaying, and improving the stability of the tooling fixture 11 during lifting.

[0028] To ensure synchronous rotation of the two bidirectional lead screws 16, both ends of each lead screw 16 are rotatably connected to connecting short plates 19. The lower surface of each connecting short plate 19 is fixedly connected to the upper surface of the support base 13. A motor 23 is installed on the side surface of the rear bidirectional lead screw 16. The end of the motor 23 facing the bidirectional lead screw 16 is fixedly connected to the corresponding connecting short plate 19. The output port of the motor 23 passes through the corresponding connecting short plate 19 and is fixedly connected to the bidirectional lead screw 16. A connecting post is installed at the end of each bidirectional lead screw 16 away from the motor 23. Two connecting posts 29 are fixedly connected to the surfaces of two sprockets 30. A synchronous chain 18 is provided between the two sprockets 30. Both ends of the synchronous chain 18 are engaged with the two sprockets 30. The sides of the two connecting posts 29 facing the bidirectional lead screw 16 pass through the connecting short plate 19 and are fixedly connected to the bidirectional lead screw 16. After the motor 23 is started, its output end drives the rear bidirectional lead screw 16 to rotate. The sprockets 30 are linked by the connecting posts 29, and the synchronous chain 18 engages with and drives another set of sprockets 30, so that the two bidirectional lead screws 16 rotate synchronously at the same speed.

[0029] To facilitate the installation of large gates, a rectangular groove 22 is provided through the side surface of each support bracket 12. A sliding rod 32 is provided inside each support bracket 12. The upper and lower sides of each sliding rod 32 are fixedly connected to the inner wall of the corresponding support bracket 12. A slider 31 is provided inside each rectangular groove 22. Each slider 31 is movably connected to the corresponding sliding rod 32. Two flip storage plates 15 are provided at the upper end of the support base 13. The flip storage plates 15 are used to support the gate after the fixture is folded. The opposite sides of the two flip storage plates 15 are hinged to the corresponding slider 31. In the folded state of the fixture, the flip storage plates 15 are first flipped to a horizontal position parallel to the fixture. The heavy gate is supported by its bearing surface. The gate can be initially placed without raising it. When the flip storage plates 15 are pushed, the slider 31 hinged to them slides smoothly along the sliding rod 32 inside the support bracket 12, which drives the gate to accurately approach the fixture 11, making the installation of the gate more convenient for the workers.

[0030] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A large gate tilting support fixture with foldable legs, comprising two fixture clamps (11), characterized in that, The lower ends of the two tooling fixtures (11) are provided with support bases (13), and the upper ends of the support bases (13) are provided with folding mechanisms, including four support brackets (12) and two bidirectional lead screws (16).

2. The large gate tilting support fixture with foldable legs as described in claim 1, characterized in that, The lower ends of the two tooling fixtures (11) are fixedly connected to U-shaped support plates (14), and each U-shaped support plate (14) is fixedly connected to a connecting column (17). Four support brackets (12) are located at the lower ends of the four connecting columns (17), and the upper end of each support bracket (12) is rotatably connected to the connecting column (17). Two bidirectional lead screws (16) are located at the lower ends of the two tooling fixtures (11).

3. The large gate tilting support fixture with foldable legs as described in claim 1, characterized in that, Each of the four support brackets (12) is fitted with a connecting column 2 (28) at its lower end, and each of the four connecting columns 2 (28) is provided with a U-shaped support plate 2 (21) at its lower end. Both ends of the four connecting columns 2 (28) are fixedly connected to the inner wall of the corresponding U-shaped support plate 2 (21).

4. The large gate tilting support fixture with foldable legs as described in claim 3, characterized in that, The lower surfaces of the four U-shaped support plates (21) are fixedly connected with moving blocks (20), and the two bidirectional screws (16) are threadedly connected to the corresponding moving blocks (20). The two sides of the support base (13) are fixedly connected with support blocks (27), and the upper surfaces of the two support blocks (27) are fixedly connected with U-shaped frames (25). The interior of the two U-shaped frames (25) is provided with sliding rods (26).

5. The large gate tilting support fixture with foldable legs as described in claim 4, characterized in that, The upper surfaces of the two slide rods (26) are fixedly connected to the U-shaped frame (25), and the lower surfaces of the two slide rods (26) are fixedly connected to the support block (27). The interior of the two U-shaped frames (25) is provided with sliders (24). Each slider (24) is movably connected to the corresponding slide rod (26). The opposite side of each slider (24) is fixedly connected to the opposite side of the tooling fixture (11).

6. The large gate tilting support fixture with foldable legs as described in claim 5, characterized in that, Both ends of the two bidirectional lead screws (16) are rotatably connected to connecting short plates (19), and the lower surface of each connecting short plate (19) is fixedly connected to the upper surface of the support base (13). A motor (23) is provided on the side surface of the rear bidirectional lead screw (16).

7. The large gate tilting support fixture with foldable legs as described in claim 6, characterized in that, The end of the motor (23) facing the bidirectional lead screw (16) is fixedly connected to the corresponding connecting short plate (19), and the output port of the motor (23) passes through the corresponding connecting short plate (19) and is fixedly connected to the bidirectional lead screw (16).

8. The large gate turning support fixture with foldable legs as described in claim 7, characterized in that, Each of the two bidirectional lead screws (16) is provided with a connecting post three (29) at the end away from the motor (23). A sprocket (30) is fixedly connected to the surface of each of the two connecting posts three (29). A synchronous chain (18) is provided between the two sprockets (30). Both ends of the synchronous chain (18) are engaged with the two sprockets (30). The side of each of the two connecting posts three (29) facing the bidirectional lead screw (16) passes through the connecting short plate (19) and is fixedly connected to the bidirectional lead screw (16).

9. The large gate tilting support fixture with foldable legs as described in claim 1, characterized in that, Each of the support brackets (12) has a rectangular groove (22) through its side surface. Each support bracket (12) has a sliding rod (32) inside. The upper and lower sides of each sliding rod (32) are fixedly connected to the inner wall of the corresponding support bracket (12). Each rectangular groove (22) has a slider (31) inside.

10. The large gate tilting support fixture with foldable legs as described in claim 9, characterized in that, Each of the two sliders (31) is movably connected to the corresponding slider (32). The upper end of the support base (13) is provided with two flip storage plates (15), and the opposite side of the two flip storage plates (15) is hinged to the corresponding slider (31).

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