Fully automatic hoist port shielding device

Abstract

This utility model discloses a fully automatic hoisting opening shielding device, including a frame, a cover plate, a counterweight mechanism, and lifting guardrails located on both sides of the cover plate. The cover plate is movably connected to the frame via the counterweight mechanism and the lifting guardrails. The first end of the counterweight mechanism is movably connected to the frame, and the second end of the counterweight mechanism is fixedly connected to the cover plate. The counterweight mechanism includes a connecting arm, a support base, a counterweight block, a first gear, a second gear, a first gear shaft, and a second gear shaft. The support base is fixedly mounted on the frame. This utility model uses a guardrail lifting mechanism connected to a lifting linkage mechanism to achieve automatic linkage opening and closing of the hoisting opening, avoiding the cumbersome process of operating each component separately in traditional structures, and significantly improving operational efficiency. The overall structure of the device is simple, easy to manufacture and install, and the combination of electric drive and the counterweight mechanism reduces the burden of manual operation and improves operational safety and stability.

Description

Technical Field

[0001] This utility model relates to the field of covering the hoisting opening of a building, specifically to a fully automatic hoisting opening covering device. Background Technology

[0002] In the building structures of thermal power plants, nuclear power plants, and large industrial facilities, hoisting openings are often provided in the floor slabs for the entry and exit of large equipment or components. These hoisting openings must be effectively covered when not in use to ensure the safety of on-site workers and to prevent debris from falling or causing environmental pollution. Therefore, installing openable covers and corresponding guardrail structures at the hoisting opening locations is a necessary measure to ensure both the safety of the working environment and the convenience of construction.

[0003] Most existing hoisting hole shielding structures are operated manually, including manually lifting the cover plate, disassembling or installing guardrails, etc. The operation procedures are cumbersome, require multiple people to complete, are time-consuming and labor-intensive, and also pose certain safety hazards. For example, during the process of opening the cover plate or installing the guardrail, operators may cause the cover plate to fall or cause injuries due to structural jamming, unbalanced counterweight, or misoperation, posing risks to on-site operations.

[0004] In addition, in conventional structures, the cover plate, the joint plate and the guardrail are set independently and are not linked together. They need to be operated one by one, which is inefficient and not conducive to achieving automation or electrification control. Utility Model Content

[0005] To address the shortcomings of the existing technology, the present invention aims to provide a fully automatic hoisting opening shielding device. This device uses a guardrail lifting mechanism connected to a lifting linkage mechanism to achieve automatic linkage opening and closing of the hoisting opening, avoiding the cumbersome process of operating each component separately in the traditional structure and greatly improving operational efficiency.

[0006] Specifically, this utility model provides a fully automatic hoisting opening shielding device, which includes a frame, a cover plate, a counterweight mechanism, and lifting guardrails located on both sides of the cover plate. The cover plate is movably connected to the frame through the counterweight mechanism and the lifting guardrails. The first end of the counterweight mechanism is movably connected to the frame, and the second end of the counterweight mechanism is fixedly connected to the cover plate. The counterweight mechanism includes a connecting arm, a support base, a counterweight block, a first gear, a second gear, a first gear shaft, and a second gear shaft. The support base is fixedly mounted on the frame. The first gear and the second gear are rotatably connected to the support base through the first gear shaft and the second gear shaft, respectively, and the first gear and the second gear mesh with each other. The first end of the connecting arm is fixedly connected to the first gear, the second end of the connecting arm is fixedly connected to the cover plate, and one end of the counterweight block is fixedly connected to the second gear. The lifting guardrail includes a guardrail, a connecting plate, a guardrail lifting mechanism, and a lifting linkage mechanism. The guardrail is connected to the guardrail lifting mechanism through the connecting plate. The lifting linkage mechanism is symmetrically arranged on both sides of the guardrail lifting mechanism and is movably connected to the guardrail lifting mechanism.

[0007] Furthermore, the guardrail lifting mechanism includes a base, guide rails, sliders, ball screws, couplings, a motor, and a lifting plate. The motor is fixedly connected to the first end of the base via a motor support, and the output end of the motor is fixedly connected to the first end of the ball screw via a coupling. The second end of the ball screw is movably connected to the second end of the base via a bearing. Guide rails are provided on both sides of the ball screw, and the two ends of the guide rails are fixedly connected to the ends of the base. A lifting plate is provided on the ball screw, and the rotation of the ball screw will drive the lifting plate to move. Sliders matching the guide rails are provided at both ends of the lifting plate. A through hole with an internal thread structure matching the external thread structure of the ball screw is opened in the middle of the lifting plate, and the two ends of the lifting plate are movably connected to the first ends of two sets of lifting linkage mechanisms. A connecting plate is fixedly connected to the lifting plate.

[0008] Furthermore, a first limit block and a second limit block are fixedly installed at both ends of the ball screw to limit the movement of the lifting plate.

[0009] Furthermore, the second end of the lifting linkage mechanism is movably connected to the bottom of the cover plate. The lifting linkage mechanism includes a connecting rod, a pin, a spherical bearing, and a shaft end retaining ring. The first end of the connecting rod is movably connected to the lifting plate through the pin, and the second end of the connecting rod is movably connected to the bottom surface of the cover plate through the spherical bearing and the shaft end retaining ring.

[0010] Furthermore, a gap-covering plate is provided above the connection between the cover plate and the frame. The first end of the gap-covering plate is hinged to the frame via a hinge, and the second end of the gap-covering plate overlaps the top of the cover plate.

[0011] Furthermore, the coupling is connected to the motor output shaft via a key to receive the torque output by the motor; the ball screw is connected to the coupling via a key.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: The fully automatic hoisting opening covering device provided by this utility model achieves integrated operation through a lifting linkage mechanism. As the guardrail rises or falls, the cover automatically opens or closes, significantly improving the opening and closing efficiency of the hoisting opening. Compared to traditional independent operation methods, this device effectively reduces operation time and manpower requirements, making it particularly suitable for large power plants or equipment installation sites that require frequent opening and closing of hoisting openings.

[0013] This utility model's guardrail lifting mechanism uses a ball screw and motor drive, combined with limit blocks to ensure operational safety, improving both the automation level and operational accuracy and stability. Its structural design is reasonable, and the components are easy to process and assemble, facilitating its application in industrial settings. Simultaneously, the entire system is equipped with a counterweight mechanism to ensure the balance and stability of the cover plate during opening or closing, preventing accidental falls or injuries due to gravity or uneven loading.

[0014] The lifting linkage mechanism of this utility model adopts pin shaft connection and spherical bearing transmission, which can realize flexible connection and power transmission between different structural components, improving the adaptability and durability of the device. The gap cover is hinged to the frame via hinges, which can automatically pre-open before the cover is opened to avoid jamming. At the same time, it automatically resets when the cover is closed, further improving the convenience and safety of use. The overall structure is compact, balancing functionality and manufacturing cost, and has good prospects for engineering promotion and application. Attached Figure Description

[0015] Figure 1 This is a top view of the hoisting port of this utility model; Figure 2 These are top and bottom views of the hoisting opening of this utility model; the cover plate and the lifting guardrail are in the closed state.

[0016] Figure 3 This is a cross-sectional view of the hoisting opening of this utility model, in which the cover plate and the lifting guardrail are in the open state.

[0017] Figure 4 This is a front view of the lifting guardrail of this utility model when it is in the open state. Figure 5 This is a front view of the guardrail lifting mechanism of this utility model when it is in the closed state; Figure 6 This is a side view of the guardrail lifting mechanism of this utility model when it is in the closed state; Figure 7 This is a structural schematic diagram of the lifting linkage mechanism of this utility model; Figure 8 This is a cross-sectional view of the hoisting port of this utility model, in which the cover plate and the lifting guardrail are in the process of transitioning from a closed state to an open state.

[0018] Key reference numerals: 1. Frame; 2. Cover plate; 3. Lifting guardrail; 4. Seam cover plate; 5. Frame baffle; 6. Counterweight mechanism; 7. Hinge; 8. Floor slab; 31. Railing; 32. Connecting plate; 33. Guardrail lifting mechanism; 34. Lifting linkage mechanism; 61. Connecting arm; 62. Support base; 63. Counterweight block; 64. First gear; 65. Second gear; 66. First gear shaft; 67. Second gear shaft; 80. Lifting hole; 331. Base; 332. Guide rail; 333. Slider; 334. Ball screw; 335a. First limit block; 335b. Second limit block; 336. Coupling; 337. Motor; 338. Lifting plate; 341. Connecting rod; 342. Pin; 343. Spherical bearing; 344. Shaft end retaining ring. Detailed Implementation

[0019] The embodiments of this utility model will now be described with reference to the accompanying drawings.

[0020] According to the appendix Figures 1 to 8 As shown, the present invention provides a fully automatic hoisting opening shielding device, which includes a frame 1 set around the hoisting opening in the floor slab, a cover plate 2 connected to a counterweight, two sets of lifting guardrails 3 symmetrically arranged on both sides of the cover plate, a sealing plate 4 linked with the cover plate, a frame baffle 5, a counterweight mechanism 6, and a hinge 7.

[0021] Each set of lifting guardrails includes a guardrail 31, a connecting plate 32, a guardrail lifting mechanism 33, and a lifting linkage mechanism 34. The guardrail lifting mechanism drives the lifting plate 338 to move linearly up and down via a ball screw 334 and a motor 337. The connecting plate 32 is rigidly connected to the lifting plate 338. The two ends of the lifting linkage mechanism 34 are respectively rotatably connected to the lifting mechanism via pins 342 and to the cover plate 2 via spherical bearings 343, enabling synchronous opening and closing of the guardrail and the cover plate.

[0022] The frame 1 is set around the hanging hole 80 of the floor slab 8; the frame baffle 5 is fixed on the frame 1.

[0023] One end of the cover plate 2 is rotatably connected to the frame 1 via multiple sets of counterweight mechanisms 6, allowing it to switch between a closed and open position by rotation. In this embodiment, each set of counterweight mechanisms 6 includes a connecting arm 61, a support base 62, a counterweight block 63, a first gear 64, a second gear 65, a first gear shaft 66, and a second gear shaft 67. The support base 62 is fixed to the frame 1; both ends of the first gear shaft 66 and both ends of the second gear shaft 67 are respectively mounted on the support base 62, and the first gear shaft 66 and the second gear shaft 67 are parallel to each other. The first gear 64 is mounted on the first gear shaft 66, one end of the connecting arm 61 is fixed to the first gear shaft 66, and the other end of the connecting arm 61 is fixedly connected to one end of the cover plate 2. The first gear 64 and the connecting arm 61 move synchronously with the cover plate 2. The second gear 65 meshes with the first gear 64, and the second gear 65 is mounted on the second gear shaft 67. One end of the counterweight block 63 is fixedly connected to the second gear shaft 67, and the second gear 66 can drive the counterweight block 63 to move synchronously.

[0024] The number of counterweight mechanisms 6 can be increased or decreased depending on the weight of the cover plate 2.

[0025] The lifting guardrail 3 can switch between an open and closed state. Each set of lifting guardrail 3 includes a railing 31, a connecting plate 32, a guardrail lifting mechanism 33, and a lifting linkage mechanism 34. The railing 31 is fixed on the connecting plate 32, the connecting plate 32 is fixedly connected to the guardrail lifting mechanism 33, and the lifting linkage mechanism 34 is symmetrically arranged on both sides of the guardrail lifting mechanism 33.

[0026] The guardrail lifting mechanism includes a base 331, a guide rail 332, a slider 333, a ball screw 334, a first limit block 335a, a second limit block 335b, a coupling 336, a motor 337, and a lifting plate 338. The base 331 is fixed to the frame 1, the guide rail 332 is fixed to the base 331, the first limit block 335a and the second limit block 335b are fixed to the base 331, the motor 337 is fixed to the base 331, the coupling 336 is connected to the output shaft of the motor 337 via a key to receive the torque output by the motor 337, the ball screw 334 is connected to the coupling 336 via a key, one side of the slider 333 is fixed to the lifting plate 338, and the other side of the slider 333 is slidably connected to the guide rail 332. The lifting plate 338 and the ball screw 334 are connected by rolling friction. When the ball screw 334 rotates, it drives the lifting plate 338 to move linearly. When the motor 337 is running, it drives the ball screw 334 to rotate through the coupling 336, thereby causing the lifting plate 338 to move linearly along the trajectory of the guide rail 332. The ball screw 334 is provided with a first limit block 335a and a second limit block 335b at both ends to prevent the lifting plate 338 from disengaging.

[0027] The lifting linkage mechanism 34 includes a connecting rod 341, a pin 342, a spherical bearing 343, and a shaft end retaining ring 344.

[0028] A lifting linkage mechanism 34 is provided between the cover plate 2 and the guardrail lifting mechanism 33. The lifting linkage mechanism 34 is used to drive the cover plate 2 to open when the lifting guardrail 3 opens and to drive the cover plate 2 to close when the lifting guardrail 3 closes. One end of the lifting linkage mechanism 34 is rotatably connected to the guardrail lifting mechanism 33 via a pin 342, and the other end of the lifting linkage mechanism 34 is rotatably connected to the cover plate 2 via a spherical bearing 343.

[0029] When the lifting guardrail rises to the top, the lifting linkage mechanism automatically drives the cover plate 2 to flip upward around its hinge end, opening the hoisting hole. Conversely, when the guardrail descends, the cover plate slowly closes under the action of the linkage mechanism, and the gap-covering plate 4 simultaneously covers the gap between the cover plate and the frame, effectively preventing objects from getting stuck or obstructed.

[0030] In this embodiment, there are two cover plates 2, with one end of each cover plate 2 connected to opposite sides of the frame 1, forming a split cover plate. Each cover plate 2 has a set of lifting guardrails 3 on each side. Each set of lifting guardrails 3 opens or closes synchronously, and the aforementioned lifting linkage mechanism 34 is provided between the cover plate 2 and each set of lifting guardrails 3. When the lifting guardrails 3 open and close, the cover plate 2, driven by the lifting linkage mechanism 34, opens and closes along with the lifting guardrails 3. Preferably, a shaft end retaining ring 344 is provided between the connecting rod 341 and the spherical bearing 343 of the lifting linkage mechanism 34 to prevent detachment.

[0031] When the cover plate 2 is opened or closed, due to the rotation of the cover plate, a certain space needs to be reserved between one end of the cover plate 2 and the frame 1 to allow the cover plate to rotate open and close. A gap-covering plate 4 is provided above this gap to cover the gap between the cover plate 2 and the frame 1. One end of the gap-covering plate 4 is hinged to the frame 1 via a hinge 7. When the cover plate 2 is opened, the gap-covering plate 4 is opened first to prevent the gap-covering plate 4 from getting stuck when the cover plate 2 is opened; when the cover plate 2 is closed, it will drive the gap-covering plate 4 to close together.

[0032] The fully automatic hoisting opening covering device of this utility model embodiment achieves an overall linkage function. When the lifting guardrail 3 is opened, it drives the cover plate 2 to open; when the lifting guardrail 3 is closed, it drives the cover plate 2 to close and the sealing plate 4 behind the cover plate to close.

[0033] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A fully automatic hoisting opening shielding device, comprising a frame, a cover plate, a counterweight mechanism, and lifting guardrails located on both sides of the cover plate, wherein the cover plate is movably connected to the frame through the counterweight mechanism and the lifting guardrails; The first end of the counterweight mechanism is movably connected to the frame, and the second end of the counterweight mechanism is fixedly connected to the cover plate. The lifting guardrail includes a guardrail, a connecting plate, a guardrail lifting mechanism, and a lifting linkage mechanism. The guardrail is connected to the guardrail lifting mechanism through the connecting plate. The lifting linkage mechanism is symmetrically arranged on both sides of the guardrail lifting mechanism and is movably connected to the guardrail lifting mechanism. The guardrail lifting mechanism includes a base, guide rails, sliders, ball screws, couplings, a motor, and a lifting plate. The motor is fixedly connected to the first end of the base via a motor support. The output end of the motor is fixedly connected to the first end of the ball screw via a coupling. The second end of the ball screw is movably connected to the second end of the base via a bearing. Guide rails are provided on both sides of the ball screw, and the two ends of the guide rails are fixedly connected to the ends of the base. A lifting plate is provided on the ball screw. The rotation of the ball screw will drive the lifting plate to move. Sliders matching the guide rails are provided at both ends of the lifting plate. A through hole with an internal thread structure matching the external thread structure of the ball screw is opened in the middle of the lifting plate. The two ends of the lifting plate are movably connected to the first ends of two sets of lifting linkage mechanisms. A connecting plate is fixedly connected to the lifting plate.

2. The fully automatic hoisting opening shielding device according to claim 1, characterized in that, The counterweight mechanism includes a connecting arm, a support base, a counterweight block, a first gear, a second gear, a first gear shaft, and a second gear shaft. The support base is fixedly mounted on the frame. The first gear and the second gear are rotatably connected to the support base through the first gear shaft and the second gear shaft, respectively, and the first gear and the second gear mesh with each other. The first end of the connecting arm is fixedly connected to the first gear, the second end of the connecting arm is fixedly connected to the cover plate, and one end of the counterweight block is fixedly connected to the second gear.

3. The fully automatic hoisting opening shielding device according to claim 1, characterized in that, The ball screw has a first limit block and a second limit block fixed at both ends for limiting the lifting plate.

4. The fully automatic hoisting opening shielding device according to claim 1, characterized in that, The second end of the lifting linkage mechanism is movably connected to the bottom of the cover plate. The lifting linkage mechanism includes a connecting rod, a pin, a spherical bearing, and a shaft end retaining ring. The first end of the connecting rod is movably connected to the lifting plate through the pin, and the second end of the connecting rod is movably connected to the bottom surface of the cover plate through the spherical bearing and the shaft end retaining ring.

5. The fully automated hoistway portal shielding device of claim 1, wherein, A gap-covering plate is installed above the connection between the cover plate and the frame. The first end of the gap-covering plate is hinged to the frame via a hinge, and the second end of the gap-covering plate overlaps the top of the cover plate.

6. The fully automated hoistway portal shielding device of claim 1, wherein, The coupling is connected to the motor output shaft via a key and is used to receive the torque output by the motor; the ball screw is connected to the coupling via a key.

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