Double-layer compression type sliding cover device for square cabin and opening and closing control method

Abstract

The invention provides a double-layer pressing type sliding cover device for a square cabin and an opening and closing control method, and belongs to the technical field of square cabin equipment. The device comprises a sliding cover assembly, a driving mechanism, a lifting mechanism, a control module and a pressing and locking mechanism. The pressing and locking mechanism comprises a limiting plate with a locking part and a movable baffle which is arranged in a sliding mode so as to selectively allow or prevent the lifting mechanism from being matched with the locking part. The control module enables a lower sliding cover of the sliding cover assembly to press a hatch sealing ring when the lower sliding cover is closed by controlling actions of the driving mechanism and the movable baffle, the lower sliding cover is lifted by the lifting mechanism to be not in contact with the sealing ring in the opening process, and the lower sliding cover is locked to the lifting position when the lower sliding cover is completely opened. The electric sliding cover device can be switched among three states of sealing and pressing, non-abrasion translation and unlocking and locking. The problems that a traditional sliding cover is poor in sealing performance and a sealing ring is prone to abrasion are solved, and high-reliability sealing and long-service-life maintenance are achieved.

Description

Technical Field

[0001] This invention belongs to the field of modular housing equipment technology, specifically relating to a double-layer compression sliding cover device and opening and closing control method for modular housing, which has guiding significance for the design of various modular housing equipment that require opening and closing of the top cover. Background Technology

[0002] Currently, various small devices such as radar antennas and communication antennas are often integrated into the container to achieve rapid, mobile, and concealed deployment. During operation, a sliding cover on the top of the container needs to be opened, and the equipment is raised outside using a lifting platform. The sealing performance of the sliding cover is crucial. On one hand, after the sliding cover is opened and the lifting platform is in position, its top and the container's top cover are typically sealed by pressing a sealing ring; on the other hand, when the sliding cover is closed, it must be pressed tightly against the container's top cover to provide the container with rainproof, dustproof, and electromagnetic shielding capabilities.

[0003] Existing electrically operated sliding covers for mobile shelters mostly employ a single-layer structure, typically using a motor-driven lead screw or other transmission device to move the cover along a linear track for opening and closing. For example, the paper "Design of a Sliding Protective Cover for a Certain System Mobile Shelter" (Mechanical Engineering, 2021, No. 4, pp. 68-73) proposes a sliding shelter roof design that features both translation and lifting functions. The translation mechanism consists of the sliding cover, lead screw, lead nut, bearing housing, translation motor, pulleys, and tracks, while the lifting mechanism includes a lifting bracket, limit pulleys, a screw jack, and a motor. This structure occupies a large space and is mainly suitable for special applications, making it difficult to widely adopt in general use.

[0004] Furthermore, in this type of design, the sliding cover only moves in a one-dimensional linear motion during translation. The seal between it and the top opening of the shelter typically relies on a sealing gasket located on the lower end face of the sliding cover, which frictionally seals against the upper end face of the opening. However, the shelter is prone to localized deformation under stress, making it difficult for the lower end face of the sliding cover to maintain an ideal plane. During the sliding process, some areas experience excessive friction due to compression, while other areas may have insufficient contact, resulting in a decrease in the overall sealing performance of the sliding cover and making it difficult to meet the sealing requirements of the equipment inside the shelter. Simultaneously, the sealing gasket is prone to localized wear or damage after repeated sliding, requiring frequent replacement and significantly increasing the maintenance cost of the shelter. Summary of the Invention

[0005] To address the problems of poor sealing reliability, easy wear of seals, and high maintenance costs in existing electric sliding covers, this invention provides a double-layer pressure-type sliding cover device and its opening and closing control method for container cabins. This device, through a unique double-layer sliding cover assembly and pressure-locking mechanism, can reliably apply and maintain sufficient sealing pressure when the cover is closed to effectively press the hatch sealing ring, providing better sealing and electromagnetic shielding effects. Simultaneously, it keeps the hatch sealing ring in a frictionless state throughout the entire opening and closing process, avoiding wear on the sealing ring during opening and closing, extending its service life, and reducing maintenance costs.

[0006] To achieve the above objectives, the technical solution provided by this invention is:

[0007] A double-layer compression sliding cover device for a modular container, wherein the top of the container body has an opening; the sliding cover device includes a sliding cover assembly, a drive mechanism, a lifting mechanism, a hatch sealing ring, and a compression locking mechanism symmetrically arranged on both sides of the opening.

[0008] The sliding cover assembly is used to open and close the hatch opening, including an upper sliding cover and a lower sliding cover; the upper sliding cover can move linearly along the length of the hatch; the lower sliding cover is located below the upper sliding cover and is used to press the hatch sealing ring.

[0009] The drive mechanism is used to drive the upper sliding cover movement;

[0010] Multiple lifting mechanisms are arranged on both sides of the opening; the lifting mechanisms are connected between the upper sliding cover and the lower sliding cover, and are used to convert the linear motion of the upper sliding cover into the compound motion of the lower sliding cover, so that the lower sliding cover moves up and down while moving with the upper sliding cover.

[0011] The clamping and locking mechanism is fixed to the cabin body and includes a limiting plate with at least two locking parts and a movable baffle that is slidably arranged to selectively allow or prevent the swing wheel of the lifting mechanism from engaging with the locking parts;

[0012] The sliding cover can be configured such that when the sliding cover assembly is in the closed position, the sliding cover is in a lowered sealing position that presses against the hatch seal ring, and when the sliding cover assembly is in the opening process or in the open position, the sliding cover is in a raised position that disengages from the hatch seal ring.

[0013] Furthermore, it also includes a control module, which is signal-connected to the drive mechanism and the clamping and locking mechanism, and is used to control the drive mechanism and the movable baffle to move according to the position of the sliding cover assembly, so that the sliding cover switches between a lowered sealing position and a raised position.

[0014] Furthermore, the movable baffle is arranged parallel to the side of the limiting plate; the clamping and locking mechanism also includes a baffle drive component, the output end of which is connected to the movable baffle to drive the movable baffle to slide along the length direction;

[0015] The locking part is a groove formed on the upper surface of the limiting plate; there are multiple grooves, and the movable baffle is provided with clearance holes corresponding to the grooves;

[0016] The balance wheel is rotatably mounted on the lifting mechanism;

[0017] The movable baffle has a first position and a second position; when the baffle drive drives the movable baffle to the first position, the clearance hole aligns with the groove to form a channel for the balance wheel to fall into the groove; when the baffle drive drives the movable baffle to the second position, the body of the movable baffle can block the groove, so that the upper surface of the limiting plate forms a continuous plane for the balance wheel to roll.

[0018] Furthermore, the profile of the groove includes connected inlet and locking sections;

[0019] The import segment is a plane, and the locking segment is an arc-shaped concave surface, with the plane and the arc-shaped concave surface being tangentially connected.

[0020] Furthermore, the clamping and locking mechanism also includes multiple positioning pins that are vertically fixed to the limiting plate, and an elongated hole that is set on the movable baffle and corresponds to the position of the positioning pins;

[0021] Each locating pin can slide within its corresponding elongated hole along the extension direction of the hole, so that the movable baffle slides relative to the limiting plate along its length.

[0022] Furthermore, the lifting mechanism also includes a swing arm, an upper connecting rod, and a lower connecting rod, which together with the upper sliding cover and the lower sliding cover form a parallel four-bar linkage.

[0023] The middle part of the swing arm is hinged to the cabin;

[0024] The upper connecting rod and the lower connecting rod are arranged on different sides of the swing arm. The two ends of the upper connecting rod are respectively hinged to the upper sliding cover and one end of the swing arm, and the two ends of the lower connecting rod are respectively hinged to the lower sliding cover and the other end of the swing arm.

[0025] The balance wheel and the lower connecting rod are on the same side and are rotatably connected to one end of the balance rod.

[0026] Furthermore, the drive mechanism includes a drive motor, a worm gear reducer, a transmission shaft, a drive gear, and a rack;

[0027] The drive motor is used to drive the speed reducer;

[0028] The reducer has two coaxially arranged output ends, each connected to a drive shaft via a coupling;

[0029] A drive gear is installed at the end of each of the two drive shafts;

[0030] Two parallel and symmetrically arranged racks are fixed to the bottom of the upper sliding cover, and the drive gear meshes with the racks.

[0031] Furthermore, tracks are symmetrically arranged on both sides of the cabin opening; multiple rollers are distributed at intervals along the length of the bottom sides of the upper sliding cover, and the rollers are slidably arranged on the tracks so that the upper sliding cover can be translated along the length of the tracks.

[0032] Furthermore, a mechanical limit block is provided at the end of the upper sliding cover's travel stroke, and a position sensor for detecting the position of the upper sliding cover, and / or a position sensor for detecting the position of the lifting mechanism are also provided.

[0033] The present invention also provides an opening and closing control method for a double-layer compression sliding cover device for a container, the opening and closing control method including an opening control process and a closing control process;

[0034] The process of opening the control includes the following steps:

[0035] Initial state: The sliding cover assembly is in a fully closed state, the sliding cover presses against the hatch sealing ring, and the swing wheel of the lifting mechanism is located in the locking part of the limiting plate of the pressing and locking mechanism and is mechanically locked;

[0036] Step 1: Control the start of the drive mechanism to drive the upper sliding cover to move in the opening direction. The upper sliding cover drives the swing wheel to move along the contour of the locking part of the closed end of the limit plate through the lifting mechanism, thereby raising the lower sliding cover to release the pressure on the hatch sealing ring.

[0037] Step 2: When the upper sliding cover moves to the locking part that causes the balance wheel to completely exit the closed end of the limiting plate, the control drive mechanism is paused, and the movable baffle of the pressing locking mechanism is moved to the position that blocks the locking part of the limiting plate to form a continuous flat upper surface.

[0038] Step 3: Control the drive mechanism to start again, drive the upper sliding cover to move the lower sliding cover, which is in the raised state, horizontally along the opening direction.

[0039] Step 4: When the upper sliding cover moves forward to a position close to fully open, control the drive mechanism to pause and control the movable baffle to move so as to expose the position of the locking part of the opening end of the limit plate.

[0040] Step 5: Control the drive mechanism to start again, drive the upper sliding cover to complete the last part of the stroke to the fully open position, so that the balance wheel rolls into the locking part of the opening end of the limit plate and is mechanically locked; at this time, the lower sliding cover is locked in the raised position, and the top opening of the cabin is fully open.

[0041] The closed control process is the reverse of the open control process.

[0042] The advantages of this invention are:

[0043] 1. This invention, by setting up an upper sliding cover and a lower sliding cover that are interconnected and can move relative to each other, and introducing a mechanical automatic pressing system composed of a lifting mechanism and a pressing and locking mechanism, enables the lower sliding cover to move vertically downward and press against the hatch sealing ring when closed. Furthermore, during the entire opening and closing process of the sliding cover, the lower sliding cover only contacts and presses against the sealing ring at the final closed position. During most of the opening, translation, and closing strokes, the lower sliding cover is in a raised state, completely disengaging from the hatch sealing ring, thus completely eliminating the sliding friction between the two, preventing wear on the sealing ring, and greatly extending its service life. The sealing ring does not need to be replaced after hundreds or even thousands of opening and closing cycles of the sliding cover, significantly reducing the maintenance frequency and cost of the container.

[0044] 2. The clamping and locking mechanism used in this invention is ingeniously designed and reliably operates. Only two electric push rods are needed to control the translation of the movable baffle, enabling the lifting mechanism's swing wheel to switch between two states: locking in the groove on the limiting plate and rolling on the plane. This ensures the sliding cover locks securely when fully closed or fully open. This solution employs a purely mechanical engagement method, ensuring the stability of the locking state, resulting in a low failure rate and effectively improving the operational reliability of the shelter.

[0045] 3. In this invention, the end of the drive device adopts a gear and rack meshing transmission, which is reliable and has a low failure rate; the front end of the transmission mechanism adopts a worm gear reducer, which utilizes its inherent self-locking characteristics to automatically lock the transmission chain after the drive motor stops, so that the upper sliding cover can be stably stopped in any position. In particular, after the cabin is opened or closed, there is no need to set up additional electrical or mechanical locking devices, which simplifies the system structure, improves safety, and reduces control complexity. The overall time from fully closed to fully closed does not exceed 3 minutes, which significantly improves the mobility of the cabin.

[0046] 4. In a further improvement of this invention, a dual safety protection device consisting of a position sensor and a mechanical limit block is provided. The sensor enables precise electrical position control and sequential interlocking, ensuring accurate operation. The mechanical limit block serves as the final physical safety measure; even if all position sensors (such as the proximity switch in the embodiment) completely fail, it will only cause the sliding cover to fail to press the hatch sealing ring tightly, without causing the sliding cover to fall or run off the track, thus ensuring the safety of equipment and personnel and providing sufficient safety. Attached Figure Description

[0047] Figure 1 This is a schematic diagram of the overall structure of the electric sliding cover device when the sliding cover assembly is fully closed in an embodiment of the present invention. The opening in this figure is located on the left side of the figure.

[0048] Figure 2 This is a left view of the electric sliding cover device when the sliding cover assembly is fully closed in an embodiment of the present invention;

[0049] Figure 3 This is a schematic diagram of the overall structure of the electric sliding cover device when the sliding cover assembly is fully opened in an embodiment of the present invention. The opening in this figure is located on the right side of the figure.

[0050] Figure 4 This is a schematic diagram of the internal structure of the upper sliding cover in an embodiment of the present invention;

[0051] Figure 5 This is a schematic diagram of the lifting mechanism in an embodiment of the present invention;

[0052] Figure 6 This is a schematic diagram of the drive mechanism in an embodiment of the present invention;

[0053] Figure 7 This is a partial longitudinal sectional view of the electric sliding cover device when the sliding cover assembly is fully closed in an embodiment of the present invention;

[0054] Figure 8 yes Figure 7 A magnified view of part I in the middle shows the state of the sliding cover pressing against the hatch sealing ring;

[0055] Figure 9 This is a schematic diagram showing the state of the limiting block and the proximity switch at the closed position when the sliding cover assembly is fully closed in an embodiment of the present invention.

[0056] Figure 10 This is a schematic diagram of the state of the pressing and locking mechanism when the sliding cover assembly is fully closed in an embodiment of the present invention, wherein (a) is the front view and (b) is the rear view;

[0057] Figure 11 This is a partially enlarged schematic diagram of the pressing and locking mechanism when the sliding cover assembly is fully closed in an embodiment of the present invention;

[0058] Figure 12 This is a schematic diagram showing the position of the lifting mechanism when the sliding cover assembly is fully closed in an embodiment of the present invention;

[0059] Figure 13 This is a schematic diagram showing the positions of the locking mechanism and the lifting mechanism when the swing wheel of the lifting mechanism just rolls out of the groove of the limiting plate in an embodiment of the present invention.

[0060] Figure 14 This is a schematic diagram showing the positions of the upper sliding cover, the lower sliding cover, the proximity switch, and the limiting block at their closed positions when the swing wheel of the lifting mechanism in this embodiment of the invention just rolls out of the groove of the limiting plate.

[0061] Figure 15 This is a partial view showing the positions of the limiting plate and the movable baffle of the locking mechanism after the electric push rod is retracted in an embodiment of the present invention.

[0062] Figure 16This is a partial structural diagram of the pressing and locking mechanism and the cover assembly when the sliding cover assembly is about to be fully opened in an embodiment of the present invention.

[0063] Figure 17 This is a schematic diagram showing the positions of the upper sliding cover and the proximity switch and limit block near the electric push rod when the sliding cover assembly is about to be fully opened in this embodiment of the invention;

[0064] Figure 18 This is a partial structural diagram of the pressing and locking mechanism and the cover plate assembly when the sliding cover is fully opened in an embodiment of the present invention;

[0065] Figure 19 This is a schematic diagram showing the positions of the limit stop and the proximity switch when the sliding cover is fully opened in an embodiment of the present invention.

[0066] Explanation of reference numerals in the attached drawings: 1-Housing hull, 2-Upper sliding cover, 3-Rail, 4-Drive mechanism, 401-Drive motor, 402-Reducer, 403-Coupling, 404-Drive shaft, 405-Shaft seat, 406-Drive gear, 407-Rack; 5-Pressure locking mechanism, 501-Electric push rod, 502-Opening pin, 503-Limiting plate, 50301-Groove, 504-Modible baffle, 50401-Leaving hole, 505-Positioning pin; 6-Roller, 7-Sealing strip, 8-Lower sliding cover, 9-Lifting mechanism, 901-Swing rod, 902-Swing wheel, 903-Lower connecting rod, 904-Upper connecting rod, 10-Hatch sealing ring, 11-Limiting block, 12-Proximity switch. Detailed Implementation

[0067] The embodiments of the present invention are described in detail below. These embodiments are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0068] like Figures 1 to 19 As shown, this embodiment of the invention provides a double-layer compression sliding cover device for a container, including a sliding cover assembly, a drive mechanism 4, a compression locking mechanism 5, a hatch sealing ring 7, and a lifting mechanism 9.

[0069] The double-layered, pressure-locking sliding cover device is integrally installed on the top of the container hull 1, which has an opening for raising and lowering internal equipment. The sliding cover assembly, used to open and close the hull opening, includes an upper sliding cover 2 and a lower sliding cover 8. The upper sliding cover 2 can move linearly along the length of the hull, and the lower sliding cover 8 is located below the upper sliding cover to press against the hatch sealing ring. A drive mechanism 4 drives the upper sliding cover. Multiple lifting mechanisms are arranged on both sides of the hull opening, connected between the upper and lower sliding covers. These mechanisms convert the linear motion of the upper sliding cover 2 into a combined motion of the lower sliding cover, allowing the lower sliding cover to move up and down simultaneously with the upper sliding cover. The clamping and locking mechanism 5 is fixed to the cabin body and includes a limiting plate with at least two locking parts and a movable baffle that is slidably arranged to selectively allow or prevent the lifting mechanism from cooperating with the locking parts; the control module is signal connected to the drive mechanism and the clamping and locking mechanism; wherein, the control module is used to control the drive mechanism and the movable baffle to move according to the position of the sliding cover assembly, so that the sliding cover is in the descending sealing position that clamps the hatch sealing ring when fully closed, or in the rising position that disengages from the hatch sealing ring during the opening process and when fully opened.

[0070] This application uses a double-layer pressing sliding cover device designed for a specific modular shelter as an example to describe its specific composition and connection relationship in detail. In this embodiment, the modular shelter body is 6000mm long and 2438mm wide. To ensure the smooth lifting and lowering of equipment with dimensions of 2700mm × 1700mm, the top of the shelter body is partially closed by a cover, while the remaining portion is a designed opening area. The opening size of the top of the shelter is designed as a rectangular opening of 2740mm × 1740mm. The upper sliding cover 2 is designed to be 2950mm × 2000mm in size, and the lower sliding cover 8 is designed to be 2800mm × 1800mm in size. Both the upper and lower sliding covers are composed of a frame and a skin. The purpose of this invention is to reliably press the hatch sealing ring when the sliding cover assembly is closed, and to prevent contact with the hatch sealing ring during the opening process, thereby reducing wear on the hatch sealing ring. The core design points are the design and coordination of the drive mechanism, the lifting mechanism, and the pressing and locking mechanism. The specific design issues of the upper and lower sliding covers themselves are not elaborated here.

[0071] Reference Figure 1 and Figure 4 The two sides of the cabin opening are symmetrically provided with tracks 3 along their length direction. In this embodiment of the invention, the track length is 5800mm. The bottom sides of the upper sliding cover 2 have side plates that extend vertically from the upper sliding cover body. Multiple rollers 6 are distributed at intervals along the length direction on the side plates. The rollers 6 are slidably placed on the tracks 3 so that the upper sliding cover 2 can move along the tracks and ensure that there is no jamming during the forward and backward movement of the upper sliding cover.

[0072] Reference Figure 1 and Figure 5The lifting mechanism 9 includes a swing arm 901, a swing wheel 902, a lower connecting rod 903, and an upper connecting rod 904. The middle part of the swing arm 901 is hinged to the cabin body. The upper connecting rod 904 and the lower connecting rod 903 are arranged on different sides of the swing arm 901. The two ends of the upper connecting rod 904 are respectively hinged to the upper sliding cover 2 and one end of the swing arm 901, and the two ends of the lower connecting rod 903 are respectively hinged to the lower sliding cover 8 and the other end of the swing arm 901. Both the upper and lower connecting rods can rotate freely around the swing arm.

[0073] The balance wheel and the lower connecting rod are on the same side and are rotatably connected to one end of the balance rod. After the lifting mechanism is installed, it, the upper sliding cover, and the lower sliding cover form a parallel four-bar linkage, so that the lower sliding cover can always remain parallel to the upper sliding cover while it rises and falls with the swing angle of the lifting mechanism.

[0074] Reference Figure 1 and Figure 6 In this embodiment of the invention, the driving mechanism 4 includes a drive motor 401, a reducer 402, a coupling 403, a transmission shaft 404, a shaft seat 405, a drive gear 406, and a rack 407. The drive motor 401 can be a servo motor used to drive the reducer. The reducer 402 has two coaxially arranged output ends, each connected to a transmission shaft 404 via a coupling 403; a drive gear 405 is installed at the end of each of the two transmission shafts 404; two parallel and symmetrically arranged racks 407 are fixed to the bottom of the upper sliding cover, with their teeth facing downwards, and the drive gear 405 meshes with the racks 407. In this embodiment of the invention, the length of the rack 407 is slightly longer than the length of the upper sliding cover, which can effectively avoid dust accumulation. In a preferred embodiment of the invention, the reducer 402 is a worm gear reducer. Because the worm gear reducer has a self-locking characteristic, when the servo motor stops rotating, the position of the upper sliding cover 2 will be self-locked, eliminating the need for other locking devices. The drive shaft 404 is supported by multiple bearing seats 405, which are fixedly connected to the hull. The drive shaft is connected to the mounting holes of the bearing seats via deep groove ball bearings, ensuring flexible rotation of the drive shaft. The coupling 403 is a perforated coupling, effectively solving the problem of misalignment between the two drive shafts caused by hull deformation. The drive shaft 404 and the drive gear 406 are connected via a key. The entire drive mechanism is mounted on the top of the container. A rain cover can be designed on top of the drive mechanism for rain and dust protection; however, this design is not a core feature of this invention and will not be described in detail.

[0075] Reference Figures 1-3 ,and Figures 7-13Two sets of clamping and locking mechanisms 5 are symmetrically installed on both sides of the cabin opening and fixedly connected to the cabin. Their length is equal to that of the track 3. The clamping and locking mechanism 5 includes a limiting plate 503 with at least two locking parts and a movable baffle 504 that is slidably arranged. The movable baffle is arranged parallel to the side of the limiting plate. It also includes baffle driving members symmetrically arranged on both sides of the opening. The baffle driving members are located away from the cabin opening. The body of the baffle driving member is fixed on the limiting plate 503, and its output end is connected to the movable baffle 504 to drive the movable baffle 504 to slide along the length direction. The designed locking part can be a groove 50301 formed on the upper surface of the limiting plate 503. The number of grooves is preferably a plurality of grooves arranged at intervals. The movable baffle 504 is provided with a clearance hole 50401 corresponding to the groove. The contour of the groove can be designed to include a connected guide section and a locking section. The guide section is designed to be a plane, and the locking section is designed to be an arc-shaped concave surface, and the plane and the arc-shaped concave surface are tangentially connected.

[0076] The movable baffle 504 is configured with a first position (the balance wheel falls into the groove 50301) and a second position (the balance wheel disengages from the groove 50301). When the baffle drive drives the movable baffle 504 to the first position, the clearance hole 50401 on the movable baffle aligns with the groove 50301 on the limiting plate, forming a channel for the balance wheel 902 to fall into the groove 50301, thus locking it in place. When the baffle drive drives the movable baffle 504 to the second position, the body of the movable baffle can block the groove 50301, making the upper surface of the limiting plate flush with the upper surface of the movable baffle, forming a continuous plane for the balance wheel 902 to roll. At this time, the balance wheel rolls continuously on the upper surface of the limiting plate, thereby causing the sliding cover to move horizontally along with it.

[0077] In this embodiment of the invention, the pressing and locking mechanism is designed with two locking positions: the fully open and fully closed positions of the sliding cover assembly. Based on the design of the groove and movable baffle on the limiting plate, when the sliding cover assembly is fully closed, the balance wheel 902 rolls along the upper surface of the limiting plate to the arc surface and can no longer roll forward, thus locking itself. This locking position is the lowest point of the balance wheel, so the balance wheel can drive the sliding cover 8 to lock at the lowest point, thereby pressing the lower end face of the sliding cover 8 against the hatch sealing ring 10 on the top of the container, achieving a better sealing effect. When the sliding cover assembly is fully open, the balance wheel 902 is also driven to lock in the groove, thus locking the sliding cover 8, thereby avoiding problems such as vibration and sliding cover slippage during subsequent operation, ensuring the normal operation of the equipment.

[0078] In this embodiment of the invention, the baffle driving component can be the electric push rod 501 shown in the figure, or it can be any other structural component that can provide the thrust required for the linear motion of the movable baffle. Specifically, the body of the electric push rod 501 is fixed on the limiting plate 503, and the movable baffle 504 has a pin hole at one end near the electric push rod. The actuating end of the electric push rod is connected to the pin hole through an open pin 502, thereby realizing the positioning connection between the electric push rod and the movable baffle 504. In a further design, it also includes multiple positioning pins 503 that are vertically fixed to the limiting plate 503, and elongated holes that are provided on the movable baffle 504 and correspond to the positions of the positioning pins 503; each positioning pin can slide in the corresponding elongated hole along the extension direction of the elongated hole, so that the movable baffle can slide back and forth (along its length direction) relative to the limiting plate under the drive of the electric push rod 501.

[0079] In this embodiment of the invention, a sealing strip 7 is also provided on the side wall of the upper sliding cover. The lower end of the sealing strip can overlap the track 3, which can effectively prevent rain and dust, thereby protecting the roller 6 installed on the upper sliding cover.

[0080] In this embodiment of the invention, a mechanical limit block is provided at the end of the upper sliding cover's travel stroke, and a position sensor for detecting the position of the upper sliding cover and / or a position sensor for detecting the position of the lifting mechanism are also provided. The position sensor may be the limit switch 12 shown in the figure. In a preferred embodiment of the invention, limit blocks 11 are respectively installed on the front and rear end faces of the track 3, and limit switches are installed on the limit blocks. In addition, proximity switches are respectively installed on the track 3 near the fully closed and locked position of the sliding cover assembly (before the balance wheel falls into the groove) and near the fully open and locked position of the sliding cover assembly (before the balance wheel falls into the groove) to detect the position of the balance wheel 902 in the lifting mechanism. In the most preferred embodiment, the dual protection measures of the limit block 11 and the proximity switch 12 are adopted. Even if the proximity switch fails due to special circumstances, the upper sliding cover will stop sliding by hitting the limit block 11, still ensuring that the sliding cover is locked in the fully open or fully closed position, and preventing the safety problem of the sliding cover falling off.

[0081] It should be noted that the function switching of the sliding cover 8 between the lowered sealing position and the raised position in the device of the present invention is essentially achieved by coordinating the actions of the drive mechanism 4 and the clamping and locking mechanism 5. This coordination process is not limited to a specific control method. Specifically, the action logic of the sliding cover 8 clamping the hatch sealing ring 10 when closed and lifting and disengaging during the opening process and when fully opened can be accomplished by basic control methods such as manual, mechanical linkage, or simple electrical switches, or by automatic program control through integrated control modules (such as PLCs, microcontrollers, or dedicated circuits). Different control methods are all based on the same core mechanical structure and linkage principle, that is: when the sliding cover assembly moves to a specific position, the corresponding mechanism (drive mechanism and locking mechanism) is triggered, thereby causing the sliding cover 8 to reach the predetermined position. Therefore, the scope of protection of the present invention covers the hardware structure scheme that can realize the above-mentioned function switching, regardless of the specific control means adopted.

[0082] Although various control methods can be implemented, automatic control using a control module is the optimal and recommended technical solution for the device of this invention. This solution uses an integrated proximity switch 12 to monitor the position of the sliding cover assembly and / or the lifting linkage mechanism 9 in real time, and the control module precisely coordinates the sequence and timing of the actions of the drive motor 401 and the electric push rod 501 according to preset logic. This not only significantly improves the convenience, reliability, and consistency of operation, but also enables more complex protection logic, thereby fully leveraging the advantages of this device in terms of sealing reliability, service life, and safety.

[0083] Reference Figures 13-19 The following detailed implementation process will be described using an automatic control scheme equipped with a control module as an example, but this should not be construed as a limitation on the protection scope of this device. It should be noted that the terms "front end," "rear end," "forward," and "backward" described below refer to the opening direction as "front" and the closing direction as "back" (i.e.,...). Figure 1 (The left side of the indicated direction is rear, and the right side is front). In this embodiment, the servo motor 401 of the present invention has a power of 250W, the electric push rod 501 has a stroke of 250mm, and the sealing ring compression is 30%.

[0084] The opening process of the sliding cover assembly is as follows:

[0085] Initial state: The sliding cover assembly is fully closed, and the hatch seal is compressed. (Example: ...) Figure 1 ,as well as Figures 7-12As shown, the upper sliding cover 2 is located at the rear end of the track 3 (closed position). At this time, the swing wheels 902 of all lifting mechanisms are located at the lowest point of the arc of the groove of the limiting plate 503 of the clamping locking mechanism 5, and are mechanically locked. The lower sliding cover 8 is in the lowest position, and its lower end face presses the hatch sealing ring 10 with the design pressure. The proximity switch 12 installed in the closed position is triggered. The electric push rod 501 is in the fully extended state, and the limiting hole 50401 on the movable baffle 504 completely coincides with the groove 50301 of the limiting plate 503. In this state, the entire cabin is ready for transport.

[0086] Step 1: Start, unlock, and lift the sliding cover.

[0087] Upon receiving the opening command, the control module checks that all sensors are functioning normally. It then starts the drive motor 401 in forward rotation, which, through the reducer 402, drive shaft 404, and drive gear 406, drives the rack 407, causing the upper sliding cover 2 to move forward (in the opening direction) along the track 3. As the upper sliding cover 2 moves forward, it pushes the swing arm 901 forward via the upper connecting rod 904. Since the swing wheel 902 is currently located within the groove arc, the swing of the swing arm 901 forces the swing wheel 902 to roll upward along the groove arc surface, entering the guide plane. This action, via the lower connecting rod 903, causes the lower sliding cover 8 to first rise, relieving pressure on the hatch sealing ring 10.

[0088] Step 2: Switch the baffle, lock the lifting and lateral movement.

[0089] The upper sliding cover 2 continues to move forward a short distance, until the balance wheel 902 has just completely rolled out of the rear end groove ( Figure 13 The proximity switch 12, installed at this location (on the sliding cover's track), is triggered; at the same time, the swing wheel of the lifting mechanism located in other positions also synchronously rolls completely out of the corresponding groove. The drive motor 401 is de-energized, temporarily stopping operation. The control module immediately controls the electric push rod 501 to automatically retract. The electric push rod 501 pulls the movable baffle 504 forward. Figure 15 The upper surface of the movable baffle 504 completely covers the groove on the rear end of the limiting plate 503 (the groove at the front opening position and other grooves are also covered by the corresponding movable baffles). At this time, the limiting plate 503 and the movable baffle 504 together form a continuous, pit-free, flat upper surface. From this position, the balance wheel 902 can only roll on the flat upper surface and cannot fall into any grooves. The sliding cover 8 remains in the raised state and moves horizontally forward with the upper sliding cover 2, without contacting the hatch sealing ring 10.

[0090] Step 3: Move horizontally to the position before opening.

[0091] After receiving the signal that the electric push rod 501 has retracted to its final position, the control module controls the drive motor 401 to restart, driving the upper sliding cover 2 to slide forward. The upper sliding cover 2, in turn, drives the lower sliding cover 8 to continue moving forward while in a raised state. When the upper sliding cover 2 is about to reach the fully open position, another proximity switch 12 installed at the front of the track 3 is triggered. Figure 16 and Figure 17 ).

[0092] Step 4: Switch the baffle to prepare for final locking.

[0093] The control module controls the drive motor 401 to power off and pause again, and controls the electric push rod 501 to extend fully, pushing the movable baffle 504 to slide backward. It stops when the groove on the baffle is completely aligned with the front groove (open position groove) on the limiting plate 503 (the groove on the limiting plate 503 is exposed). Figure 16 At this point, the grooves in other positions on the limiting plate are also fully exposed.

[0094] Step 5: Complete opening and lock in the open position.

[0095] The drive motor 401 starts for the last time, driving the upper sliding cover 2 to complete the final short stroke until the sliding cover assembly is fully open. The balance wheel 902, near the open end, rolls along the aligned channel into the front groove of the limiting plate and finally falls into the lowest point of the groove's arc, where it is mechanically locked. Figure 18 At this time, all the swing wheels of the lifting mechanism synchronously roll into the corresponding grooves on the limit plate. Simultaneously, the upper sliding cover 2 triggers the proximity switch 12 installed on the limit block 11 at the foremost end of the track 3. Figure 19 When the drive motor 401 is powered off, it stops, and the reducer 402 self-locks.

[0096] Final state: At this point, the sliding cover 8 is locked in the raised position and completely removed from the top opening area of ​​the cabin 1. The top opening is fully open. The equipment inside the cabin can be lifted out of the cabin by the lifting mechanism, making it ready for operation.

[0097] The closing process of the sliding cover assembly is the reverse of the opening process described above. It involves first lifting and sliding, then lowering and pressing to ensure no frictional contact between the cover and the hatch sealing ring during this process. The complete closing process is as follows:

[0098] Initial state: The sliding cover is fully open, and the upper sliding cover 2 is locked and raised to the front end of the track 3 (open position). The balance wheel 902 is locked at the lowest point of the front groove of the limiting plate (the groove in the open position). The lower sliding cover 8 is locked in the raised position. The electric push rod 501 is in the extended state, and the groove of the movable baffle 504 is aligned with the front groove of the limiting plate 503.

[0099] Step 1: Start, unlock and begin panning.

[0100] Upon receiving the closing command, the control module controls the drive motor 401 to start reversing, driving the upper sliding cover 2 to move backward (in the closing direction). The balance wheel 902 is pried up from the lowest point of the arc of the front groove and rolls upward along the guide plane, causing the lower sliding cover 8 to remain in the raised state at the initial moment and begin to move horizontally backward.

[0101] Step 2: Switch the baffle and lock the lifting and translation functions.

[0102] When the upper sliding cover 2 moves backward until the balance wheel 902 has just completely rolled out of the front groove, the corresponding proximity switch 12 is triggered. The drive motor 401 pauses. The control module controls the electric push rod 501 to retract. The movable baffle 504 slides forward, blocking the front groove (at this time, the rear groove is also blocked), forming a continuous plane. This ensures that the lower sliding cover 8 continues to rise and slide during the subsequent stroke.

[0103] Step 3: Horizontally translate to the closed position.

[0104] After the electric push rod 501 retracts to its position, the servo motor 401 starts again. The upper sliding cover 2 and the lower sliding cover 8 continue to move backward in the raised state until they are close to the closed position.

[0105] Step 4: Switch the baffle to prepare for final compression and sealing.

[0106] When the upper sliding cover 2 moves back to near the closed position, the proximity switch 12 at the rear of the track 3 is triggered. The drive motor 401 stops. The control system controls the electric push rod 501 to extend fully. The movable baffle 504 slides backward, so that its groove is fully aligned with the rear groove (closed position groove) on the limit plate 503.

[0107] Step 5: Complete the closure and press to lock.

[0108] The drive motor 401 starts for the last time, driving the upper sliding cover 2 to complete the final short stroke. The balance wheel 902 rolls along the aligned channel until it nears the closed end, entering the rear end groove of the limiting plate (closed end groove), and finally falling into the lowest point of the groove's arc. During this process, the lower sliding cover 8 descends vertically under the action of the linkage mechanism to press the hatch sealing ring 10, achieving a seal. The upper sliding cover 2 triggers the proximity switch 12 located on the limiting block 11 at the rear end of the track, de-energizing the drive motor 401 and self-locking the reducer 402.

[0109] Final state: The sliding cover is fully closed, the lower cover 8 presses against the sealing ring 10 and is locked, and the entire cabin is ready for transport.

[0110] The design of the entire opening and closing process of this invention lies in the use of a movable baffle 504 to both conceal and reveal the groove on the limiting plate, allowing the balance wheel 902 to disengage from and fall into the groove. This strictly controls the movement path of the balance wheel 902, achieving the following: In the fully open and fully closed positions, the balance wheel falls into the lowest point of the groove, achieving reliable mechanical locking; during most of the travel between the fully open and fully closed positions, the movable baffle conceals the groove, forcing the balance wheel to roll on the top plane of the limiting plate, driving the sliding cover to remain raised, and preventing sliding friction between the sliding cover and the hatch sealing ring. Furthermore, all actions (starting and stopping the drive motor, extending and retracting the electric push rod) are triggered by proximity switch signals, ensuring that the process is strictly performed in sequence and avoiding malfunctions.

[0111] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the scope of the technology disclosed in the present invention, and such modifications or substitutions should all be covered within the scope of protection of the present invention.

Claims

1. A double-layered compression sliding cover device for a modular shelter, wherein the top of the shelter body has an opening; characterized in that, It includes a sliding cover assembly, a drive mechanism, a lifting mechanism, a hatch sealing ring, and a clamping and locking mechanism symmetrically arranged on both sides of the opening; The sliding cover assembly is used to open and close the hatch opening, and includes an upper sliding cover and a lower sliding cover; the upper sliding cover can move linearly along the length of the hatch; the lower sliding cover is located below the upper sliding cover and is used to press the hatch sealing ring. The drive mechanism is used to drive the upper sliding cover to move; Multiple lifting mechanisms are arranged on both sides of the opening; The lifting mechanism is connected between the upper sliding cover and the lower sliding cover, and is used to convert the linear motion of the upper sliding cover into the composite motion of the lower sliding cover, so that the lower sliding cover moves up and down while moving with the upper sliding cover; The clamping and locking mechanism is fixed to the cabin body and includes a limiting plate with at least two locking parts and a movable baffle that is slidably arranged to selectively allow or prevent the swing wheel of the lifting mechanism from cooperating with the locking parts. The sliding cover can be configured such that when the sliding cover assembly is in the closed position, the sliding cover is in a descending sealing position that presses against the hatch sealing ring, and when the sliding cover assembly is in the opening process or in the open position, the sliding cover is in a raised position that disengages from the hatch sealing ring.

2. The double-layer pressing sliding cover device according to claim 1, characterized in that, It also includes a control module, which is signal-connected to the drive mechanism and the clamping and locking mechanism, and is used to control the drive mechanism and the movable baffle to move according to the position of the sliding cover assembly, so that the sliding cover switches between a lowered sealing position and a raised position.

3. The double-layer pressing sliding cover device according to claim 1, characterized in that, The movable baffle is arranged parallel to the side of the limiting plate; the clamping and locking mechanism further includes a baffle driving member, the output end of which is connected to the movable baffle to drive the movable baffle to slide along the length direction; The locking part is a groove formed on the upper surface of the limiting plate; there are multiple grooves, and the movable baffle is provided with clearance holes corresponding to the grooves; The balance wheel is rotatably mounted on the lifting mechanism; The movable baffle has a first position and a second position; when the baffle driver drives the movable baffle to the first position, the clearance hole aligns with the groove to form a channel for the balance wheel to fall into the groove; when the baffle driver drives the movable baffle to the second position, the body of the movable baffle can block the groove, so that the upper surface of the limiting plate forms a continuous plane for the balance wheel to roll.

4. The double-layer pressing sliding cover device according to claim 3, characterized in that, The contour of the groove includes a connected inlet section and a locking section; The inlet segment is a plane, the locking segment is an arc-shaped concave surface, and the plane and the arc-shaped concave surface are tangentially connected.

5. The double-layer pressing sliding cover device according to claim 4, characterized in that, The clamping and locking mechanism also includes a plurality of positioning pins that are vertically fixed to the limiting plate, and an elongated hole that is provided on the movable baffle and corresponds to the position of the positioning pins; Each locating pin can slide within its corresponding elongated hole along the extension direction of the elongated hole, so that the movable baffle slides relative to the limiting plate along its length direction.

6. The double-layer pressing sliding cover device according to claim 2, characterized in that, The lifting mechanism also includes a swing arm, an upper connecting rod, and a lower connecting rod, which together with the upper sliding cover and the lower sliding cover form a parallel four-bar linkage. The middle part of the swing arm is hinged to the cabin body; The upper connecting rod and the lower connecting rod are arranged on different sides of the swing rod, wherein the two ends of the upper connecting rod are respectively hinged to the upper sliding cover and one end of the swing rod, and the two ends of the lower connecting rod are respectively hinged to the lower sliding cover and the other end of the swing rod; The balance wheel is on the same side as the lower connecting rod and is rotatably connected to one end of the balance rod.

7. The double-layer pressing sliding cover device according to claim 1, characterized in that, The drive mechanism includes a drive motor, a worm gear reducer, a transmission shaft, a drive gear, and a rack; The drive motor is used to drive the reducer; The reducer has two coaxially arranged output ends, which are respectively connected to a drive shaft via couplings; Each of the two drive shafts has a drive gear mounted at its end; Two parallel and symmetrically arranged racks are fixed to the bottom of the upper sliding cover, and the drive gear meshes with the racks.

8. The double-layer pressing sliding cover device according to claim 1, characterized in that, Tracks are symmetrically arranged on both sides of the cabin opening; multiple rollers are distributed at intervals along the length direction on both sides of the bottom of the upper sliding cover, and the rollers are slidably arranged on the track so that the upper sliding cover can be translated along the length direction of the track.

9. The double-layer pressing sliding cover device according to claim 1, characterized in that, The upper sliding cover is provided with a mechanical limit block at the end of its movement stroke, and is also equipped with a position sensor for detecting the position of the upper sliding cover, and / or a position sensor for detecting the position of the lifting mechanism.

10. The opening and closing control method for the double-layer compression sliding cover device for a container as described in any one of claims 1-9, characterized in that, The opening and closing control method includes an opening control process and a closing control process; The opening control process includes the following steps: Initial state: The sliding cover assembly is in a fully closed state, the sliding cover presses against the hatch sealing ring, and the swing wheel of the lifting mechanism is located in the locking part of the limiting plate of the pressing and locking mechanism and is mechanically locked; Step 1: Control the start of the drive mechanism to drive the upper sliding cover to move in the opening direction. The upper sliding cover drives the swing wheel to move along the contour of the locking part of the closed end of the limit plate through the lifting mechanism, thereby raising the lower sliding cover to release the pressure on the hatch sealing ring. Step 2: When the upper sliding cover moves to the locking part that causes the balance wheel to completely exit the closed end of the limiting plate, control the drive mechanism to pause, and control the movable baffle of the pressing and locking mechanism to move to the position that blocks the locking part of the limiting plate, so as to form a continuous flat upper surface. Step 3: Control the drive mechanism to start again, drive the upper sliding cover to move the lower sliding cover, which is in the raised state, horizontally along the opening direction; Step 4: When the upper sliding cover moves forward to a position close to fully open, control the drive mechanism to pause and control the movable baffle to move so as to expose the position of the locking part of the opening end of the limiting plate. Step 5: Control the drive mechanism to start again, drive the upper sliding cover to complete the last stroke to the fully open position, so that the balance wheel rolls into the locking part of the opening end of the limit plate and is mechanically locked; at this time, the lower sliding cover is locked in the raised position, and the top opening of the cabin is fully open. The closing control process is the reverse of the opening control process.

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