An elevator platform pit structure

Abstract

The application provides a lifting elevator platform car bottom structure and relates to the technical field of elevator platforms. The lifting elevator platform car bottom structure comprises a main frame, a floating plate, an adaptive support assembly, a weight distribution sensor matrix and an intelligent controller. The floating plate is arranged in parallel above the main frame, and the adaptive support assembly is uniformly distributed between the main frame and the floating plate. In the application, the weight distribution sensor matrix is used to obtain the load distribution in real time, the intelligent controller is used to calculate the gravity center and control the adaptive support assembly to adjust the support air pressure and the damping coefficient, and the guide limiting assembly is used to maintain stable vertical guidance, so that the uneven stress and the medium and high frequency vibration problems under the partial load working condition are effectively improved. Meanwhile, the shear-proof apron plate assembly is linked with the floating plate, the dynamic shielding of the edge gap is better maintained, and the safety and stability of the equipment operation are improved.

Description

Technical Field

[0001] This invention relates to the field of elevator platform technology, specifically to a lifting elevator platform car bottom structure. Background Technology

[0002] Elevator platforms, as a common type of vertical transportation equipment, are widely used in various building floors, industrial assembly lines, and barrier-free access. The car bottom structure is the core basic component that directly supports passengers or goods, and its structural stability and shock absorption performance directly affect the service life of the equipment and the riding experience. Traditional car bottom structures are mostly composed of rigid frames and flat load-bearing plates fixedly connected together, mainly relying on the overall structural material strength to bear the load and directly transfer the force to the elevator frame or civil engineering foundation.

[0003] However, existing conventional car bottom structures have certain limitations in practical use. On the one hand, due to the use of rigid supports, when the load center of gravity shifts or encounters off-center loading conditions, the stress distribution in different areas of the car bottom is uneven, and local stress concentration can easily lead to structural fatigue. Furthermore, rigid connections are difficult to effectively absorb and buffer medium- and high-frequency vibrations during operation, resulting in poor equipment stability. On the other hand, during the lifting and lowering process, there is a gap between the load-bearing edge of the car bottom and the external shaft wall or floor. Existing shear protection structures are mostly fixed and passively installed, making it difficult to adaptively adjust the position or dynamic stroke during the load-bearing process. This makes it difficult to maintain a stable protective gap, posing certain safety hazards.

[0004] Therefore, those skilled in the art have provided a lifting elevator platform car bottom structure to solve the problems mentioned in the background art. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a lifting elevator platform car bottom structure, which solves the problems of uneven stress distribution, poor shock absorption and buffering effect, and difficulty in dynamically and stably blocking the anti-shear gap in existing car bottom structures under eccentric load conditions.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A lifting elevator platform car bottom structure includes a main frame, as well as a floating plate, an adaptive support component, a weight distribution sensor matrix, and an intelligent controller. The floating plate is arranged parallel to the top of the main frame, and the adaptive support components are evenly distributed between the main frame and the floating plate; The weight distribution sensor matrix is ​​laid on the upper surface of the floating plate; The intelligent controller is fixedly installed on one side of the inside of the main frame, and the intelligent controller is electrically connected to the adaptive support component and the weight distribution sensor matrix respectively. Through the above technical solutions, an adaptive adjustment system consisting of sensing, control and execution is constructed, enabling the car bottom to sense the load distribution in real time and dynamically adjust the support state, thereby effectively improving the uneven force phenomenon and enhancing the overall shock absorption effect.

[0007] Furthermore, the adaptive support assembly includes an airbag, a variable damper, and a leveling actuator. The airbag is vertically arranged at the four corners between the main frame and the floating plate. The variable damper is coaxially built into the airbag. The two share the same vertical center line to form an inner and outer parallel structure. The lower end of the cylinder of the variable damper is fixed to the mounting base of the main frame, and the upper end of its piston rod is fixed to the mounting base on the bottom surface of the floating plate. The leveling actuator is installed at the four corners of the main frame, and its output end abuts against the bottom of the floating plate. By using the above technical solution, the airbag and variable damper are connected in parallel inside and outside, and combined with the leveling actuator, the coordinated control of the car bottom flexible leveling and rigid auxiliary support is realized. This can not only provide appropriate support stiffness under different loads, but also effectively suppress medium and high frequency vibrations, significantly improving the smoothness of operation.

[0008] Furthermore, the weight distribution sensor matrix consists of several piezoelectric sensors arranged uniformly in a grid pattern. The piezoelectric sensors are embedded in blind holes on the upper surface of the floating plate, and the upper surface of the piezoelectric sensors is flush with the upper surface of the floating plate. The above technical solution utilizes a grid-like piezoelectric sensor matrix to accurately capture the force on the surface of the floating plate, providing a reliable data foundation for the intelligent controller and thus improving the accuracy of center of gravity calculation and subsequent adaptive adjustment.

[0009] Furthermore, the upper surface of the floating plate is provided with an anti-slip plate, which is a polymer polyurethane material plate with diamond-shaped embossed texture on the surface; The above technical solution uses a high-molecular polyurethane material plate with diamond-shaped convex texture as an anti-slip plate, which significantly increases the friction between the load-bearing surface and personnel or goods, and effectively reduces the risk of slippage under wet or unbalanced load conditions.

[0010] Furthermore, the floating plate is provided with an anti-shear skirt assembly at its edge. The anti-shear skirt assembly includes an edge skirt and an anti-shear brush. The edge skirt is continuously arranged along the four sides of the floating plate and extends downward. The anti-shear brush is embedded in the outer side of the lower edge of the edge skirt. The above technical solution enables the anti-shear skirt assembly to move synchronously with the floating plate, which effectively compensates for the dynamic travel of the floating plate during leveling or shock absorption, thereby maintaining effective shielding of edge gaps under most working conditions and reducing the risk of shearing.

[0011] Furthermore, the surface of the main frame is provided with crisscrossing drainage grooves, and a guide hole is provided at the intersection of the drainage grooves. The guide hole is a stepped through hole that vertically penetrates the main frame. The above technical solution utilizes crisscrossing drainage channels and guide holes to quickly guide and drain accidentally accumulated water, effectively preventing components from becoming damp or the structure from corroding due to water accumulation inside the main frame.

[0012] Furthermore, a guide limiting component is provided between the main frame and the floating plate. The guide limiting component includes a guide post and a guide sleeve. The guide sleeve is vertically fixed to the main frame, and the guide post is fixed to the bottom of the floating plate and slidably inserted into the guide sleeve. The above technical solution utilizes the sliding fit between the guide post and the guide sleeve to provide a relatively stable vertical guide and limit for the up and down movement of the floating plate, effectively suppressing the horizontal swaying or torsion that may occur under eccentric loading, and improving the reliability of the structure operation.

[0013] Furthermore, the intelligent controller includes a microprocessor, an air pump control module, and a damping adjustment module. The microprocessor receives signals from the weight distribution sensor matrix and calculates the load center of gravity. The microprocessor outputs control signals to the air pump control module to adjust the air pressure of each airbag and outputs control signals to the damping adjustment module to adjust the damping coefficient of the variable damper. The above technical solution clarifies the internal logic control architecture of the intelligent controller, enabling the microprocessor to independently and coordinately control the airbag pressure and damper damping based on real-time load center of gravity data, thereby achieving intelligent and precise adaptive adjustment.

[0014] This invention provides a lifting elevator platform car bottom structure. It has the following beneficial effects: 1. This invention provides a lifting elevator platform car bottom structure. By setting up a weight distribution sensor matrix and cooperating with an intelligent controller, it can obtain the load distribution in real time and adaptively adjust the air pressure of each airbag and the damping coefficient of the variable damper, thereby realizing adaptive leveling of the car bottom and suppression of medium and high frequency vibrations, significantly improving the stability and ride comfort during elevator operation.

[0015] 2. This invention provides a lifting elevator platform car bottom structure. By placing the anti-shear skirt panel assembly on the edge of the floating plate and linking it with the floating plate, it can better maintain the shielding of the load-bearing edge gap during the floating plate's up-and-down leveling or shock absorption process, thereby achieving dynamic anti-shear protection and significantly improving the safety of passengers getting on and off the platform and during equipment operation.

[0016] 3. This invention provides a lifting elevator platform car bottom structure. By setting a guide and limiting component between the main frame and the floating plate and arranging anti-slip plates on the edge of the floating plate, it can maintain a relatively stable vertical guiding movement and provide good edge anti-slip performance when subjected to eccentric loads. This achieves overall operational stability and reliable protection of the car bottom structure, and significantly improves the service life and overall reliability of the equipment under complex working conditions. Attached Figure Description

[0017] Figure 1 This is an overall isometric view of the present invention; Figure 2 This is a diagram illustrating the main frame and adaptive support components of the present invention; Figure 3 This is a diagram illustrating the floating plate and upper structure of the present invention; Figure 4 This is a diagram illustrating the floating plate and anti-shear skirt assembly of the present invention; Figure 5 This is a diagram illustrating the intelligent controller of the present invention; Figure 6 This is an overall axial sectional view of the present invention; Figure 7 for Figure 2 Enlarged view of point A in the middle; Figure 8 for Figure 6 Enlarged view of point B in the middle.

[0018] Explanation of reference numerals in the attached figures: 1. Main frame; 11. Drainage channel; 2. Adaptive support assembly; 21. Airbag; 22. Variable damper; 23. Leveling actuator; 3. Weight distribution sensor matrix; 31. Piezoelectric sensor; 4. Anti-shear skirt assembly; 41. Edge skirt; 42. Anti-shear brush; 5. Intelligent controller; 51. Microprocessor; 52. Air pump control module; 53. Damping adjustment module; 6. Guide and limiting assembly; 61. Guide post; 62. Guide sleeve; 7. Floating plate; 71. Anti-slip plate; 72. Blind hole; 73. Diamond-shaped embossed pattern. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example 1: like Figure 1-8 As shown, this embodiment of the invention provides a lifting elevator platform car bottom structure, including a main frame 1 as the basic load-bearing carrier and a floating plate 7 arranged parallel above it. Adaptive support components 2 are evenly arranged at the four corners between the main frame 1 and the floating plate 7 to provide flexible support and shock absorption. An intelligent controller 5 is installed inside one side of the main frame 1. This intelligent controller 5, as the core control unit, is electrically connected to the adaptive support components 2 and the weight distribution sensor matrix 3 laid on the upper surface of the floating plate 7 to form a closed-loop sensing and execution system.

[0021] To ensure the stable operation of the floating plate 7 under eccentric loading conditions, a guide and limiting assembly 6 is also provided between the main frame 1 and the floating plate 7. The guide sleeve 62 is vertically fixed to the main frame 1, and its inner wall is usually filled with a self-lubricating copper-based alloy bushing. The guide post 61 fixed to the bottom of the floating plate 7 is slidably inserted into the guide sleeve 62, thereby providing a relatively stable vertical guide and anti-torsional constraint for the up and down floating of the floating plate 7.

[0022] The adaptive support assembly 2 consists of an airbag 21, a variable damper 22, and a leveling actuator 23. The airbag 21 is vertically arranged, and the variable damper 22 is coaxially built into the airbag 21. Both share the same vertical centerline, forming an internal and external parallel structure. This design balances the low-frequency, large-stroke buffering of the air spring with the high-frequency vibration suppression of the damper. The lower end of the cylinder of the variable damper 22 is fixed to the mounting base of the main frame 1, and the upper end of its piston rod is fixed to the mounting base on the bottom surface of the floating plate 7. The leveling actuator 23 is installed at the four corners of the main frame 1, with its output end abutting against the bottom of the floating plate 7, providing rigid auxiliary support during static or fine-tuning operations.

[0023] To accurately acquire load distribution data, the weight distribution sensor matrix 3 consists of several piezoelectric sensors 31 arranged in a uniform grid pattern. The piezoelectric sensors 31 are embedded in blind holes 72 on the upper surface of the floating plate 7, and their upper surfaces are flush with the upper surface of the floating plate 7 to ensure direct contact between the detection surface and the load. Simultaneously, an anti-slip plate 71 is provided on the edge region of the upper surface of the floating plate 7. This anti-slip plate is made of high-molecular polyurethane material with diamond-shaped ridges 73 on its surface, effectively increasing friction and protecting the sensors in the central area from direct wear.

[0024] In terms of safety protection, the floating plate 7 is equipped with an anti-shear skirt assembly 4 at its edge. The edge skirt 41 is continuously arranged along the four sides of the floating plate 7 and extends downward to block the gap between the floating plate 7 and the external shaft. A flexible anti-shear brush 42 is embedded on the outer side of the lower edge of the edge skirt 41. When the floating plate 7 floats up and down, the edge skirt 41 and the flexible anti-shear brush 42 move in tandem, effectively maintaining the dynamic blocking of the gap.

[0025] In addition, the surface of the main frame 1 is provided with crisscrossing drainage grooves 11, and the intersection of the drainage grooves 11 is provided with a stepped through hole that runs vertically through the main frame 1 as a guide hole. Accidentally accumulated water can be collected along the drainage grooves 11 to the guide hole and discharged quickly, preventing water accumulation inside the main frame 1 from affecting the safety of components.

[0026] Working principle: When passengers or cargo enter the floating platform 7, the piezoelectric sensors 31 in the weight distribution sensor matrix 3 sense the force changes in each area in real time and transmit the signals to the intelligent controller 5. After receiving the signals, the microprocessor 51 calculates the current load center of gravity offset. If an off-center load is detected, the microprocessor 51 outputs a control signal to the air pump control module 52 to inflate and pressurize the airbags 21 in areas with greater force, or to deflate and depressurize the airbags 21 in areas with less force; at the same time, it drives the leveling actuator 23 to cooperate with the push, so that under the vertical constraint of the guide limit component 6, the force on each support point of the floating platform 7 tends to be balanced, thereby achieving force leveling.

[0027] During elevator operation, if medium-to-high frequency vibrations occur, the microprocessor 51 outputs a control signal to the damping adjustment module 53 based on the vibration frequency. This module adjusts the damping coefficient of the variable damper 22 in real time, working in conjunction with the airbag 21 to absorb vibration energy and significantly improve operational stability. During this dynamic process, the anti-shear skirt assembly 4 moves synchronously with the floating plate 7, and the anti-shear brush 42 continuously blocks edge gaps to ensure personnel safety. If water accumulates, it flows smoothly out along the drainage trough 11 and guide holes, ensuring the equipment operates in a relatively safe environment.

[0028] The following points should be noted in this article: 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in a general design.

[0029] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

Claims

1. A lifting elevator platform car bottom structure, comprising a main frame (1), characterized in that: It also includes a floating plate (7), an adaptive support assembly (2), a weight distribution sensor matrix (3), and an intelligent controller (5); The floating plate (7) is arranged parallel above the main frame (1), and the adaptive support components (2) are evenly distributed between the main frame (1) and the floating plate (7). The weight distribution sensor matrix (3) is laid on the upper surface of the floating plate (7); The intelligent controller (5) is fixedly installed on one side of the inside of the main frame (1), and the intelligent controller (5) is electrically connected to the adaptive support component (2) and the weight distribution sensor matrix (3) respectively.

2. The elevator platform car bottom structure according to claim 1, characterized in that: The adaptive support assembly (2) includes an airbag (21), a variable damper (22), and a leveling actuator (23). The airbag (21) is vertically arranged at the four corners between the main frame (1) and the floating plate (7). The variable damper (22) is coaxially built into the airbag (21). The two share the same vertical center line to form an internal and external parallel structure. The lower end of the cylinder of the variable damper (22) is fixed to the mounting seat of the main frame (1), and the upper end of its piston rod is fixed to the mounting seat on the bottom surface of the floating plate (7). The leveling actuator (23) is installed at the four corners of the main frame (1), and its output end abuts against the bottom of the floating plate (7).

3. The elevator platform car bottom structure according to claim 1, characterized in that: The weight distribution sensor matrix (3) consists of several piezoelectric sensors (31) arranged in a grid pattern. The piezoelectric sensors (31) are embedded in blind holes (72) on the upper surface of the floating plate (7), and the upper surface of the piezoelectric sensors (31) is flush with the upper surface of the floating plate (7).

4. The elevator platform car bottom structure according to claim 1, characterized in that: The upper surface of the floating plate (7) is provided with an anti-slip plate (71), which is a high-molecular polyurethane material plate with diamond-shaped embossed patterns (73) on its surface.

5. The elevator platform car bottom structure according to claim 1, characterized in that: The floating plate (7) is provided with an anti-shear skirt assembly (4) at its edge. The anti-shear skirt assembly (4) includes an edge skirt (41) and an anti-shear brush (42). The edge skirt (41) is continuously arranged along the four sides of the floating plate (7) and extends downward. The anti-shear brush (42) is embedded in the outer side of the lower edge of the edge skirt (41).

6. The elevator platform car bottom structure according to claim 1, characterized in that: The surface of the main frame (1) is provided with crisscrossing drainage grooves (11), and a guide hole is provided at the intersection of the drainage grooves (11). The guide hole is a stepped through hole that vertically penetrates the main frame (1).

7. The elevator platform car bottom structure according to claim 1, characterized in that: A guide limiting component (6) is also provided between the main frame (1) and the floating plate (7). The guide limiting component (6) includes a guide post (61) and a guide sleeve (62). The guide sleeve (62) is vertically fixed on the main frame (1), and the guide post (61) is fixed to the bottom of the floating plate (7) and slidably inserted into the guide sleeve (62).

8. The elevator platform car bottom structure according to claim 2, characterized in that: The intelligent controller (5) includes a microprocessor (51), an air pump control module (52), and a damping adjustment module (53). The microprocessor (51) receives the signal from the weight distribution sensor matrix (3) and calculates the load center of gravity. The microprocessor (51) outputs a control signal to the air pump control module (52) to adjust the air pressure of each airbag (21) and outputs a control signal to the damping adjustment module (53) to adjust the damping coefficient of the variable damper (22).

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