Stereo garage with lifting platform anti-falling structure

Abstract

The utility model provides a stereo garage with a lifting platform anti-falling structure. And the falling risk of the stereo garage lifting platform when the driving lifting unit fails is avoided. The anti-falling assembly is arranged and comprises the stop block capable of being triggered and the limiting unit, and when the stop block is triggered, the stop block is matched with the limiting unit to stop the descending trend of the lifting table, so that it is ensured that the lifting table cannot fall off due to unexpected situations, and the safety and reliability of the stereo garage are improved. The limiting unit is arranged on the supporting stand column, lifting failure can be responded in time, and braking hovering at any height of the supporting stand column can be achieved.

Description

Technical Field

[0001] The utility model relates to a garage for parking multiple cars, in particular to a garage with mechanical equipment for moving vehicles, and specifically to a three-dimensional garage with a lifting platform anti-falling structure. Background Art

[0002] With the acceleration of urbanization, the number of motor vehicles has increased dramatically. This is especially true in older residential communities, where historical planning limitations have led to a severe shortage of parking spaces. This has led to increasingly prominent parking difficulties and chaotic parking. To effectively address this issue, multi-story parking garages, as a space-efficient parking solution, have become a key component of older residential community renovations.

[0003] When installing a multi-story parking garage in a renovation of an older residential complex, key considerations include rational space utilization, cost control, and the impact on residents' lives. R&D teams typically design various types of multi-story parking garage systems, such as vertical circulation, lifting and lateral movement, and horizontal movement, to accommodate the spatial conditions of different communities.

[0004] Under cost constraints, the R&D team will optimize the design, use cost-effective materials and technologies, and simplify the structure to reduce construction costs. In addition, the design of the multi-story parking garage will also take into account the convenience and safety of operation, ensuring that residents can quickly and safely store and retrieve their vehicles.

[0005] Patent application CN118498806A discloses a multi-story parking garage that cleverly utilizes a frame structure centered around supporting columns. These columns are fixed structures, preventing translation and rotation, to stabilize the support frame and accommodate vehicle loads. Furthermore, the vehicle-mounted platform tracks, constructed around these supporting columns, achieve more stable operation, reducing the impact of dynamic loads on the garage, thereby lowering the overall structural strength requirements. This offers several benefits: simplifying the support structure; supporting high-rise garages with five or more floors; and significantly reducing the space required for garage operation (including escape space) through the rational arrangement of support and rotational structures, making it suitable for installation in areas with narrow aisles or parking spaces.

[0006] In a stereo garage, vehicles need to be moved to a high place to make full use of the space. Therefore, during the transportation process, reliable anti-fall devices are needed to provide protection at any time to ensure the safety of personnel, vehicles and equipment. The anti-fall devices configured in existing stereo garages mainly include:

[0007] Electromagnetic anti-fall device: For example, Chinese patent CN2758381Y discloses an anti-fall device for a lifting and transversely moving multi-story parking garage. This device may not work properly due to power supply problems or electromagnetic system failures, and may also be affected by extreme weather.

[0008] Hydraulic or pneumatic anti-fall systems: For example, Chinese patent CN2871727Y discloses a four-cylinder hydraulic vertical lift parking garage. This system may have a leakage risk, resulting in an inaccurate transmission ratio or an inability to provide sufficient braking force.

[0009] Mechanical anti-fall device: For example, the anti-fall device for the vehicle loading plate of a multi-story parking garage disclosed in Chinese patent CN201401037Y uses plug-in hooks to achieve positioning, involves many components, and requires frequent inspection to ensure reliability. On the other hand, it is not suitable for working scenarios in which fixed columns are supported and lifted.

[0010] Therefore, a more reliable anti-fall system for a three-dimensional parking garage is needed, especially a structure that can adapt to the above-mentioned invention patent using fixed support columns to support the lifting and transportation of the lifting turntable. Utility Model Content

[0011] In order to make up for the deficiencies of the prior art, the present invention provides a three-dimensional car park with a lifting platform anti-fall structure. The risk of the lifting platform in the three-dimensional car park falling when the driving lifting unit fails is avoided. By setting an anti-fall component, including a triggerable stop block and a limit unit, when the stop block is triggered, it cooperates with the limit unit to prevent the downward trend of the lifting platform, thereby ensuring that the lifting platform will not fall due to unexpected circumstances, thereby improving the safety and reliability of the three-dimensional car park. The limit unit is arranged on the supporting column, which can respond to the lifting failure in time and brake and hover at any height of the supporting column. This can at least solve or alleviate one or more technical problems in the prior art, or at least provide a beneficial option.

[0012] The technical solution adopted by the present invention to solve the above technical problems is:

[0013] A three-dimensional parking garage with a lifting platform anti-falling structure is characterized by comprising

[0014] Support columns, including

[0015] Limit unit;

[0016] Lifting drive unit;

[0017] A lifting platform can be driven by the lifting drive unit to rise and fall along the supporting column. The top of the lifting platform is provided with an anti-fall component, which includes a triggerable stop block. When the stop block is triggered, it cooperates with the limit unit to prevent the lifting platform from descending.

[0018] The anti-fall assembly is combined with the limiting unit arranged on the fixed support column to achieve anti-fall, which can improve the anti-fall efficiency. As part of the fixed support structure, the limiting unit can ensure that the stop block can quickly and accurately cooperate with the limiting unit when triggered, thereby effectively preventing the downward trend of the lifting platform. In addition, this setting can reduce the complexity of installation. Since the limiting unit is part of the fixed support, it can reduce additional installation steps and costs, and also reduce the number of components that need to be checked during maintenance. In addition, the stability of the overall structure can be enhanced. The use of the limiting unit in conjunction with the fixed support structure can enhance the stability of the entire lifting system and reduce the shaking or deviation of the lifting platform caused by external factors (such as wind or earthquakes). Finally, the overall safety of the three-dimensional parking garage can be improved. In an emergency, this coordination mechanism can minimize the risk of the lifting platform falling and protect the safety of vehicles and personnel.

[0019] In a preferred embodiment, the anti-fall assembly includes a pair of mounting side plates arranged on the top of the lifting platform, and a linkage shaft is installed between the pair of mounting side plates;

[0020] The linkage shaft is connected to the connecting rod assembly, and the connecting rod assembly is connected to the stop block;

[0021] The linkage shaft is connected to the lifting drive unit and can be triggered by the lifting drive unit to rotate to a first angle, so as to drive the stop block to rotate to a position that cooperates with the limiting unit through the connecting rod assembly.

[0022] There is a risk of falling when the lifting drive unit of the multi-story parking garage lift fails. By setting an anti-fall component on the top of the lift, including a triggerable stop block and a limit unit, when the stop block is triggered, it cooperates with the limit unit to prevent the lift from falling due to accidents, thereby ensuring that the lift will not fall due to accidents, and improving the safety and reliability of the multi-story parking garage.

[0023] The anti-fall assembly on top of the lift platform acts as a passive safety measure, providing additional safety protection when active safety measures (such as the lift drive unit) fail. The stop block is designed to trigger under specific conditions (such as when the lift platform's transmission components become disconnected or loose). This design allows for rapid response to emergencies and prevents the lift platform from falling. The anti-fall assembly, combined with the position limiter, effectively prevents the lift platform from descending, improving the reliability of the anti-fall system. This design typically features a simple structure, making it easy to maintain and inspect, ensuring long-term operational reliability. Because the anti-fall assembly eliminates the need for complex mechanical structures, it reduces maintenance costs and workload, while also improving the reliability of the entire parking garage system. Furthermore, a parking garage with a highly reliable anti-fall system can boost user confidence and increase their willingness to use the garage, thereby increasing its utilization rate and economic benefits.

[0024] Integrating the anti-fall mechanism into the top of the platform eliminates the need for additional anti-fall mechanisms and welded clamping rails, making the overall structure more compact and reducing the weight of the multi-story parking garage. This improves the platform's smooth operation and overall anti-fall effectiveness. In the event of a fall, the linkage shaft in this solution is quickly triggered by the lift drive unit, rapidly rotating the stop block via the linkage assembly to engage the stop unit. This provides a timely response and rapid protection, effectively preventing or mitigating the damage caused by the fall. Precise mechanical design, such as optimized linkage assemblies, ensures smooth movement and precise positioning of the platform during the lifting process, which is crucial for improving parking efficiency and user experience. The simplified structural design reduces maintenance costs and workload by eliminating complex mechanical components and maintenance requirements. Furthermore, the reduced weight also reduces material usage, thereby lowering costs. By reducing dynamic loads and inertial forces, this structural design helps balance the dynamic performance of the lift table, reducing stress and wear on the lift table and its components, thereby improving the stability and durability of the entire system.

[0025] The anti-fall component design of this solution takes into account a variety of possible falling situations, has strong adaptability and robustness, and can work effectively in different usage environments and conditions.

[0026] In a preferred embodiment, the connecting rod assembly includes a first rocker arm connected to the end of the linkage shaft, a long pull rod hinged to the first rocker arm, a second rocker arm hinged to the long pull rod, and a stop shaft connected to the middle part of the second rocker arm, and the stop block is installed on the stop shaft; the second rocker arm and the long pull rod are hinged to the lower end of the second rocker arm, and the upper end of the second rocker arm is connected to a potential energy unit, and the potential energy unit accumulates potential energy that can drive the stop block to rotate when the stop block is not triggered.

[0027] The platform's anti-fall structure is further optimized through the use of a linkage assembly and potential energy unit. The linkage assembly, consisting of a first rocker arm, a long pull rod, a second rocker arm, and a stop shaft, allows the movement of the stop block to be precisely controlled by the rotation of the linkage shaft. This design allows the stop block to quickly engage the limit unit when needed, effectively preventing the platform from falling.

[0028] By integrating the anti-fall component on the top of the lifting platform, the additional anti-fall mechanism and complex installation are eliminated, making the entire structure more compact. At the same time, the dead weight of the stereo garage is reduced, which is conducive to improving the smoothness of the lifting platform operation and the overall anti-fall effect.

[0029] When the lifting platform falls, the linkage shaft can be quickly triggered by the lifting drive unit, and the stop block can be quickly driven to rotate to a position that cooperates with the limit unit through the connecting rod assembly, responding to the fall in time and providing a quick protection response, thereby effectively avoiding or reducing the damage caused by the fall.

[0030] The coordination between the lowering platform and the supporting columns, through precise mechanical structure design, such as the optimization of the connecting rod assembly, can ensure the smooth movement and positioning accuracy of the lifting platform during the lifting process, which is crucial to improving parking efficiency and user experience.

[0031] The potential energy unit is designed to store potential energy that can drive the stopper when it is not triggered. This design can quickly release potential energy in emergency situations, enabling a fast response, while also reducing energy consumption in non-emergency situations and improving system efficiency.

[0032] In a preferred embodiment, the potential energy unit is a spring.

[0033] A spring stores energy through its elastic deformation. When the spring is compressed or stretched, it stores elastic potential energy that can be released when needed to rotate the stopper, achieving a quick response.

[0034] The elastic potential energy of a spring provides a reliable and stable energy release mechanism. When the stopper is not triggered, the stored energy in the spring remains stable, ensuring timely action in an emergency. As a simple mechanical component, it is easy to manufacture and maintain, with relatively low cost, while providing effective energy storage and release. Furthermore, springs can be designed in various shapes and sizes to suit different application scenarios and load requirements, providing design flexibility.

[0035] In addition, the potential energy unit can also be selected in other forms according to the situation, such as a counterweight structure, a hydraulic energy storage structure, a flywheel structure, etc.

[0036] In a preferred embodiment, the lifting drive unit includes a driving motor and a chain transmission assembly, the chain transmission assembly includes a chain connected to the lifting platform, the linkage shaft is connected to the chain through a fixed plate fixed to the chain, and the chain pulls the linkage shaft to maintain it at the second angle, so that the stop block is pulled by the connecting rod assembly and remains disengaged from the limit unit; when the chain is disconnected or loose, the linkage shaft rotates to the first angle under the action of the potential energy unit, so that the stop block is driven by the second pendulum to rotate to a position where it cooperates with the limit unit for stopping.

[0037] The coordinated operation of the lift drive unit and the linkage assembly ensures stable control of the lift platform and prevents it from falling. The chain drive assembly, including a chain connected to the lift platform, efficiently transmits power from the drive motor to the lift platform. The chain drive provides an accurate average transmission ratio, making it suitable for applications with large center distances, helping to maintain the stability and accuracy of the lift platform during lifting. The linkage shaft is connected to the chain via a fixed plate. When the chain is operating normally, the linkage shaft remains at a second angle, disengaging the stop block from the stop unit and allowing the lift platform to rise and fall normally. If the chain breaks or becomes loose, the linkage shaft, activated by the potential energy unit, rotates to the first angle. The stop block then engages the stop unit, quickly preventing the lift platform from descending and preventing it from falling. The potential energy unit (e.g., a spring) accumulates energy when the stop block is not triggered. This not only provides a fast response mechanism but also ensures that in an emergency, the energy can be quickly released, driving the stop block to engage the stop unit, improving the system's responsiveness and reliability. By connecting the linkage shaft with the chain, precise control of the lifting platform is achieved. At the same time, the design of the potential energy unit reduces additional mechanical components, making the entire structure more compact and reducing the weight of the stereo garage, which is conducive to improving the smoothness of the lifting platform operation and the overall anti-fall effect.

[0038] In a preferred embodiment, the linkage rotating shaft is connected to the fixing plate via a connecting piece with adjustable length.

[0039] The linkage shaft and fixed plate are connected by an adjustable-length connector. This design advantage lies in the fact that the adjustable connector allows the distance between the linkage shaft and fixed plate to be adjusted according to actual installation requirements. This flexibility means that the chain tension can be fine-tuned to ensure proper chain tension under varying loads and wear conditions, thereby improving system stability and reliability. During installation, the adjustable connector simplifies the assembly process. Workers can quickly adjust the connector length to achieve precise installation based on actual space constraints and positioning requirements, which helps improve construction efficiency. Over time, mechanical components may require maintenance or replacement due to wear or damage. Adjustable-length connectors simplify this process by allowing for quick adjustment or replacement without disassembling the entire system, reducing downtime and maintenance costs. Since mechanical systems may undergo dimensional changes due to temperature fluctuations, load variations, or other environmental factors, adjustable-length connectors provide the necessary adaptability to compensate for these changes, ensuring continued stable operation of the system. In the event of a chain break or loosening, the adjustable connector helps maintain the linkage shaft's position until the stop block, driven by the potential energy unit, engages the stop unit, which then engages the stop. This design provides additional safety, preventing accidental falls due to chain failure. By adjusting the length of the connector, stress concentration points in the system can be reduced, which helps extend the life of the chain and linkage shaft, as stress concentration is often the main cause of component fatigue and breakage.

[0040] In a preferred embodiment, the limiting unit is a ratchet rack having continuous triangular teeth, the upper tooth surface of the triangular teeth is a first inclined surface, the lower tooth surface is a second inclined surface, the angle between the first inclined surface and the horizontal is 0° to 20° downward, and the angle between the second inclined surface and the horizontal is greater than the angle between the first inclined surface and the horizontal; the stop block includes an angle block portion protruding from the stop shaft and capable of being pressed against the upper tooth surface of the rack.

[0041] The stopper is designed as a ratchet rack with continuous triangular teeth. This design allows the stopper to press against the upper teeth of the rack and lock when moved in a specific direction. This one-way locking function ensures the platform can rise and fall freely during normal operation, but can be quickly locked when stopped to prevent accidental descent. This mechanism, similar to a ratchet mechanism in machinery, converts continuous rotation or reciprocating motion into unidirectional stepping motion, providing an effective braking method. The triangular teeth have a horizontal upper surface and an inclined lower surface, providing stable support and reliable locking. When the stopper is triggered, it cooperates with the stopper to effectively prevent the platform from descending, enhancing the safety and reliability of the entire system. In an emergency, such as a chain break or loosening, the linkage shaft, driven by a potential energy element (such as a spring), quickly rotates to the first angle. The stopper then engages the stopper to quickly stop the platform from descending. This rapid response is crucial for fall prevention and safety.

[0042] In a preferred embodiment, a stop protrusion is provided on the inner side of the mounting side plate, and the stop protrusion supports the corner block portion when the stop block is not triggered.

[0043] The stop protrusion provides a preloaded support for the corner block, helping to maintain the stability of the stop block when not triggered, ensuring it won't be accidentally triggered by vibration or minor impact during normal operation. This preloaded support helps improve the reliability and stability of the entire fall protection structure. By providing support when the stop block is not triggered, it prevents false triggering due to minor vibrations or unexpected impacts, thus avoiding unnecessary safety accidents. The stop protrusion also enhances the structural strength of the mounting side panel, making it more able to withstand the pressure from the stop block. This design helps to disperse the force, reducing the risk of deformation or damage to the side panel due to concentrated pressure from the stop block.

[0044] Furthermore, the presence of the stop ridges simplifies assembly and adjustment. When the stop block needs to be adjusted or replaced, the stop ridges provide a clear reference point, making these operations faster and more accurate.

[0045] In a preferred embodiment, the distance between the upper end of the second swing rod and the middle portion of the second swing rod is greater than the distance between the lower end of the second swing rod and the middle portion of the second swing rod.

[0046] This design increases the length of the lever arm at the upper end of the second pendulum, providing greater torque than at the lower end. When the potential energy unit (such as a spring) releases energy, the longer lever arm more effectively rotates the stopper, enabling a quicker response and preventing the platform from descending. In emergency situations, such as a broken or loose chain, the longer lever arm at the upper end of the second pendulum allows the stopper to rotate more quickly into engagement with the stopper, improving the system's response speed, which is crucial for fall prevention and safety. This design optimizes the force transmission path, making it more direct and efficient. By increasing the length of the lever arm at the upper end, the required force from the potential energy unit is reduced, thereby reducing the unit's specifications and cost while maintaining the same response speed. The longer lever arm at the upper end helps maintain the stability of the second pendulum when the stopper is triggered, reducing vibration or deformation caused by excessive torque, thereby improving the stability and reliability of the entire anti-fall structure. This second pendulum design provides greater adaptability under varying load conditions. For example, when the load is heavy, the longer lever arm can help trigger the stop block more easily, while when the load is light, this design will not affect the normal operation of the stop block.

[0047] In a preferred embodiment, the connection position between the connecting member and the linkage shaft is the midpoint of the linkage shaft.

[0048] Connecting the connector at the midpoint of the linkage shaft balances torque, ensuring the shaft remains stable when pulled by the chain. This prevents shaft deflection or vibration caused by torque imbalance, thereby improving the stability and reliability of the entire mechanism. When the chain pulls the linkage shaft, the midpoint connection reduces bending stress on the shaft because the force application point is closer to the shaft's geometric center. This reduces bending caused by torque and extends the shaft's service life. The midpoint connection helps improve the stopper's response speed. The moderately long lever arm allows the potential energy element (such as a spring) to quickly rotate the stopper into position to engage the stopper when the chain breaks or loosens, achieving a rapid fall prevention response. The midpoint connection simplifies the connection between the linkage shaft and the chain, making the structure more compact and easier to install and maintain. It also reduces the additional stress concentration caused by improperly positioned connectors. The midpoint connection method also provides a clear reference point, which helps to accurately adjust the position of the linkage shaft during installation, ensuring the accurate fit of the stop block and the limit unit, thereby improving the installation accuracy and reliability of the entire anti-fall mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0050] Figure 1 It is a schematic diagram of the overall structure of a three-dimensional parking garage in one embodiment of the present utility model.

[0051] Figure 2 This is a schematic diagram of the overall structure of the lifting platform in one embodiment of the present utility model.

[0052] Figure 3 This is a side structural diagram of a lifting platform in one embodiment of the utility model.

[0053] Figure 4 This is a schematic diagram of the overall structure of the lifting platform anti-fall assembly in one embodiment of the present utility model.

[0054] Figure 5 It is a side structural diagram of the lifting platform anti-fall assembly in one embodiment of the present utility model.

[0055] Figure 6 This is a partial structural diagram of the cooperation between the anti-fall assembly and the support column in one embodiment of the utility model.

[0056] Figure 7 This is a schematic structural diagram of a support column in one embodiment of the present invention. DETAILED DESCRIPTION

[0057] In order to clearly illustrate the technical features of this solution, the present invention is described in detail below through specific implementation methods and in conjunction with the accompanying drawings.

[0058] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited to the specific embodiments disclosed below.

[0059] In addition, in the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0060] 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 being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0061] In this application, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0062] In this application, unless otherwise expressly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0063] like Figure 1 In one embodiment, a three-dimensional parking garage with a lifting platform anti-falling structure is disclosed. The overall structure of the three-dimensional parking garage can refer to the content disclosed in the invention patent involved in the background technology. During operation, the lifting platform will be driven by the lifting drive unit to lift. At this time, if the lifting traction or transmission device fails, it may cause a fall risk, so a reliable protection system is needed. Figure 1 The structure of the three-dimensional parking garage includes a fixed support column 100, which includes a limit unit 120 set on the side and a lifting drive unit 110 set on the top. As a component cooperating with the support column 100, the three-dimensional parking garage also includes a lifting platform 200 that can be driven by the lifting drive unit 110 to rise and fall along the support column 100, wherein the top of the lifting platform 200 is provided with an anti-fall component 1101, reference Figure 2, including a triggerable stop block 2101. When triggered, the stop block 2101 cooperates with the limit unit 120 to prevent the platform from descending. In other words, it can quickly and timely respond to drive or traction failures through mechanical means, triggering an emergency stop to prevent the platform from falling and ensure the safe operation of the multi-story parking garage.

[0064] refer to Figures 2 to 6 The anti-fall assembly 210 includes a pair of mounting side plates 2102 disposed on the top of the lifting platform 200, with a linkage shaft 2106 mounted between the pair of mounting side plates 2102; the linkage shaft 2106 is connected to the connecting rod assembly 2103, and the connecting rod assembly 2103 is connected to the stop block 2101; the linkage shaft 2106 is connected to the lifting drive unit 110 and can be triggered by the lifting drive unit 110 to rotate to a first angle, thereby driving the stop block 2101 to rotate to a position that cooperates with the limit unit 120 through the connecting rod assembly 2103. More specifically, the linkage shaft is connected to the traction structure of the lifting drive unit, such as a chain or a steel cable, and is pulled and fixed at a certain angle in a normal state. When it becomes loose, the pulling force fails or becomes unbalanced, causing the linkage shaft to be triggered to rotate to the first angle, thereby driving the stop block to rotate and cooperate with the limit unit to achieve a rapid stopping effect.

[0065] refer to Figure 5 The entire action process is demonstrated. The traction member of the lifting drive unit, such as a chain or wire rope, is connected to the lifting platform. The linkage shaft in the anti-fall assembly is also connected to the traction member. Under normal circumstances, the traction member is in a taut state. At this time, the tension between the linkage shaft and the traction member is relatively loose or close to zero. This can be adjusted through the installation process. The subsequent embodiments also describe a special adjustment method. Therefore, the linkage shaft is in a fixed position, and the stop block is also stored in the installation side plate. When the traction member fails or disconnects, it must be disconnected on one side. At this time, the connection between the linkage shaft and the traction member suddenly tightens and generates tension, pulling the linkage shaft to a first angle, and then driving the stop block to quickly extend and cooperate with the limit unit to fix the lifting platform in its position during operation. That is, it can respond and lock the position of the lifting platform the moment the traction member disconnects. By setting up a connecting rod structure, a one-way self-locking function can also be formed. Unless the traction is repaired and the lifting platform is raised, the self-locking function cannot be contacted, which provides higher safety.

[0066] Further integration Figure 2 and Figure 3The connecting rod assembly 2103 includes a first rocker arm 1031 connected to the end of the linkage shaft 2106, a long pull rod 1032 hinged to the first rocker arm 1031, a second rocker arm 1033 hinged to the long pull rod 1032, and a stop shaft 1034 connected to the middle part of the second rocker arm 1033, and the stop block 2101 is installed on the stop shaft 1034; the second rocker arm 1033 and the long pull rod 1032 are hinged at the lower end of the second rocker arm 1033, and the upper end of the second rocker arm 1033 is connected to a potential energy unit 1035, which accumulates potential energy that can drive the stop block 2101 to rotate when the stop block 2101 is not triggered. When the linkage shaft rotates, the torque is transmitted to the stop shaft 1034 through the action of the above-mentioned connecting rod structure, thereby triggering the stop block. The potential energy unit can quickly release the potential energy to pull the second pendulum to move, driving the stop shaft to make the response faster.

[0067] As shown, the potential energy unit is a spring. In other embodiments not shown, the potential energy unit can also be a pneumatic or hydraulic cylinder, generating stored potential energy through the compression or expansion of a fluid. Alternatively, the potential energy unit can be a counterweight structure, operating through gravitational potential energy. During normal operation, the potential energy of the potential energy unit is overcome by the pulling force of the lift drive. When the pulling force fails or becomes unbalanced, the potential energy is released.

[0068] Combine Figure 6 and Figure 1 The lifting drive unit 110 includes a drive motor and a chain transmission assembly, and the chain transmission assembly includes a chain 1101 connected to the lifting platform. Figure 3 The linkage shaft is connected to the chain 1101 through a fixed plate 2104 fixed to the chain 1101, and the chain 1101 pulls the linkage shaft 2106 to maintain it at the second angle, so that the stop block 2101 is pulled by the connecting rod assembly 2103 and remains disengaged from the limit unit; when the chain 1101 is disconnected or loose, the linkage shaft 2106 rotates to the first angle under the action of the potential energy unit 1035, so that the stop block 2101 is driven by the second pendulum 1033 to rotate to a position where it cooperates with the limit unit 120 for stopping.

[0069] like Figure 3 The linkage shaft 2106 is connected to the fixed plate 2104 via an adjustable length connector 2105. The connector is, for example, a turnbuckle bolt. By adjusting the length of the connector, the connecting rod assembly can be quickly and easily maintained at a suitable angle during installation and commissioning, ensuring that the stop block is at the second angle and can be triggered in a timely manner.

[0070] Combine Figure 4 and Figure 7The limiting unit 120 is a ratchet rack with continuous triangular teeth. The upper tooth surface of the triangular teeth is a first inclined surface, and the lower tooth surface is a second inclined surface. The angle between the first inclined surface and the horizontal is 0° to 20° downward, and the angle between the second inclined surface and the horizontal is greater than the angle between the first inclined surface and the horizontal. The stop block includes an angle block portion 1012 that protrudes from the stop shaft and is capable of pressing against the upper tooth surface of the ratchet rack. When the stop block is rotated to the first angle, the angle block portion extends out of the mounting side plate and presses against the upper tooth surface of the ratchet rack, forming a limit. Once the failure of the lifting drive is eliminated, the limit can be released by raising the lifting platform.

[0071] In addition, if Figure 4 The inner side of the mounting side plate is provided with a stop protrusion 1021, which supports the corner block portion 1012 when the stop block is not triggered. The stop protrusion can accurately stop the stop block in a fixed position.

[0072] In addition, in an embodiment not shown in the figure, the distance between the upper end of the second swing rod and the middle of the second swing rod is greater than the distance between the lower end of the second swing rod and the middle of the second swing rod, so as to appropriately reduce the torque of the potential energy.

[0073] In addition, referring to the various figures, the connection point between the connecting member and the linkage shaft is the midpoint of the linkage shaft. This location of the connecting member at the midpoint of the linkage shaft ensures balanced traction. If traction fails on one side, the stop block on at least one side can be quickly triggered and rotated, providing high safety.

[0074] The above specific implementation methods cannot be used as a limitation on the protection scope of the present utility model. For those skilled in the art, any replacement, improvement or transformation made to the implementation methods of the present utility model falls within the protection scope of the present utility model.

[0075] Anything not described in detail in the present invention is well known to those skilled in the art.

Claims

1. A three-dimensional parking garage with a lifting platform anti-fall structure, characterized in that: Including support columns, including A limiting unit; a lifting drive unit; a lifting platform that can be driven by the lifting drive unit to rise and fall along the supporting column, and a fall prevention component is provided on the top of the lifting platform, including a triggerable stop block, which cooperates with the limiting unit to prevent the lifting platform from descending when the stop block is triggered.

2. The three-dimensional parking garage with a lifting platform anti-falling structure according to claim 1, characterized in that: The anti-fall assembly includes a pair of mounting side plates arranged on the top of the lifting platform, and a linkage shaft is installed between the pair of mounting side plates; The linkage shaft is connected to the connecting rod assembly, and the connecting rod assembly is connected to the stop block; The linkage shaft is connected to the lifting drive unit and can be triggered by the lifting drive unit to rotate to a first angle, so as to drive the stop block to rotate to a position that cooperates with the limiting unit through the connecting rod assembly.

3. The three-dimensional parking garage with a lifting platform anti-falling structure according to claim 2, characterized in that: The connecting rod assembly includes a first rocker arm connected to the end of the linkage shaft, a long pull rod hinged to the first rocker arm, a second rocker arm hinged to the long pull rod, and a stop shaft connected to the middle part of the second rocker arm, and the stop block is installed on the stop shaft; the second rocker arm and the long pull rod are hinged to the lower end of the second rocker arm, and the upper end of the second rocker arm is connected to a potential energy unit, and the potential energy unit accumulates potential energy that can drive the stop block to rotate when the stop block is not triggered.

4. The three-dimensional parking garage with a lifting platform anti-falling structure according to claim 3, characterized in that: The potential energy unit is a spring.

5. The three-dimensional parking garage with a lifting platform anti-falling structure according to claim 3, characterized in that: The lifting drive unit includes a drive motor and a chain transmission assembly, the chain transmission assembly includes a chain connected to the lifting platform, the linkage shaft is connected to the chain via a fixed plate fixed to the chain, and the linkage shaft is pulled by the chain to maintain it at the second angle, so that the stop block is pulled by the connecting rod assembly and remains disengaged from the limiting unit; When the chain is broken or loose, the linkage shaft rotates to the first angle under the action of the potential energy unit, so that the stop block is driven by the second pendulum piece to rotate to a position where it cooperates with the limit unit to stop.

6. The three-dimensional parking garage with a lifting platform anti-falling structure according to claim 5, characterized in that: The linkage rotating shaft is connected to the fixing plate via a connecting piece with adjustable length.

7. The three-dimensional parking garage with a lifting platform anti-falling structure according to any one of claims 3 to 6, characterized in that: The limiting unit is a ratchet rack with continuous triangular teeth, the upper tooth surface of the triangular teeth is a first inclined surface, the lower tooth surface is a second inclined surface, the angle between the first inclined surface and the horizontal is 0° to 20° downward, and the angle between the second inclined surface and the horizontal is greater than the angle between the first inclined surface and the horizontal; the stop block includes an angle block portion protruding from the stop shaft and capable of being pressed with the upper tooth surface of the ratchet rack.

8. The three-dimensional parking garage with a lifting platform anti-falling structure according to claim 7, characterized in that: A stopping protrusion is provided on the inner side of the mounting side plate, and the stopping protrusion supports the corner block portion when the stopping block is not triggered.

9. The three-dimensional parking garage with a lifting platform anti-falling structure according to claim 3, characterized in that: The distance between the upper end of the second swing rod and the middle portion of the second swing rod is greater than the distance between the lower end of the second swing rod and the middle portion of the second swing rod.

10. The three-dimensional parking garage with a lifting platform anti-falling structure according to claim 6, characterized in that: The connection position between the connecting member and the linkage rotating shaft is the midpoint of the linkage rotating shaft.

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