Adjustable construction elevator temporary protective door

Abstract

The utility model discloses an adjustable construction elevator temporary protective door, and relates to the technical field of building construction safety protection equipment. The door comprises a door frame assembly, a door body assembly and an adjusting assembly, the door frame assembly comprises two side frames and a top frame, each side frame is of a telescopic structure and comprises an inner rod and an outer rod which are mutually nested, the door body assembly comprises a door plate and a rotating shaft, the upper end and the lower end of the rotating shaft are connected with the side wall of the door plate, the surfaces of the side frames are connected with bearings, and the rotating shaft is connected with the bearings. The adjusting assembly comprises a lead screw penetrating through the top frame, and the top end of the top frame is connected with a motor. The protective door is provided with the side frame and the adjusting mechanism, the side frame adopts a telescopic structure formed by mutually nesting the inner rod and the outer rod, the height of the side frame can be changed by adjusting the relative position of the inner rod and the outer rod, and meanwhile, the width of the door frame can be adjusted by means of the adjusting assembly, so that the protective door can adapt to various construction elevator door openings with different sizes.

Description

Technical Field

[0001] This utility model belongs to the technical field of construction safety protection equipment, specifically, it relates to an adjustable temporary protective door for construction elevators. Background Technology

[0002] During the construction process, construction elevators are important equipment for the vertical transportation of personnel and materials, and the safety protection of their entrances and exits is of paramount importance. Traditional construction elevator safety doors are mostly of fixed size, which cannot adapt to the differences in elevator shaft opening sizes at different construction sites, resulting in many inconveniences during installation and use.

[0003] Chinese Patent CN219009608U discloses an adjustable temporary protective door for elevator shaft construction. The protective door includes a door frame and a protective rod installed within the door frame. During elevator shaft door frame construction, workers lift the protective door towards the interior. The protective door moves inward around a second fixing bolt as its rotation center. Once the protective door is raised to a certain height, the adjusting groove of the supporting adjusting rod is engaged with the positioning section of the third fixing bolt. At this point, the protective door is supported by a triangular support mechanism formed by the limiting connecting rod and the supporting adjusting rod. Due to the action of the limiting connecting rod and the supporting adjusting rod, the protective door moves parallel to the elevator shaft door frame, moving out of its range. However, most elevator shafts have different dimensions, and this device uses a fixed-size protective door. This makes it unsuitable for elevator shafts with mismatched dimensions, resulting in poor applicability.

[0004] In view of this, this utility model is proposed. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide an adjustable temporary protective door for construction elevators, which solves the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0007] An adjustable temporary protective door for construction elevators includes: a door frame assembly, a door body assembly, and an adjustment assembly. The door frame assembly includes two side frames and a top frame. The side frames adopt a telescopic structure, including nested inner and outer rods. The door body assembly includes a door panel and a rotating shaft. The upper and lower ends of the rotating shaft are connected to the side walls of the door panel. Bearings are connected to the surface of the side frames, and the rotating shaft is connected to the bearings. The adjustment assembly includes a lead screw that passes through the top frame. A motor is connected to the top of the top frame, and a second gear is connected to the bottom of the motor. A first gear is connected to one end of the lead screw, and the first gear and the second gear are meshed. A slider is connected to the surface of the other end of the lead screw, and the slider is connected to the side frame.

[0008] Optionally, the outer rod surface is provided with multiple limiting holes along the length direction, and the multiple limiting holes are distributed at equal intervals.

[0009] Optionally, a first inner cavity is provided inside the top of the inner rod, and a spring is connected inside the first inner cavity. One end of the spring is connected to a limiting post, and one end of the limiting post passes through the first inner cavity and is located on the surface of the inner rod, with the limiting post and the limiting hole corresponding to each other.

[0010] Optionally, the bottom end of the inner rod is connected to a movable wheel, which is made of high-strength rubber.

[0011] Optionally, a second inner cavity is provided inside the top frame, and one end of the lead screw connected to the first gear is located in the second inner cavity. The lead screw is threadedly connected to the slider.

[0012] Optionally, both the first gear and the second gear are bevel gears.

[0013] Optionally, the door panel surface is connected to a handle and a warning sign, the warning sign surface is coated with fluorescent paint, and the handle surface is provided with anti-slip texture.

[0014] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all of the following advantages at the same time:

[0015] 1. By setting up a side frame and adjustment mechanism, the side frame adopts a telescopic structure with inner and outer rods nested together. By adjusting the relative position of the two, the height of the side frame can be changed. At the same time, the width of the door frame can be adjusted with the help of the adjustment component. This allows the safety door to adapt to construction elevator door openings of various sizes.

[0016] 2. By setting limit holes and limit posts, the limit holes on the outer rod and the limit posts connected to the inner spring of the inner rod cooperate with each other. When the side frame is adjusted to the appropriate size, the limit posts are inserted into the limit holes to firmly fix the relative positions of the inner rod and the outer rod. This effectively prevents the side frame telescopic structure from loosening due to external impact, vibration and other factors during use, ensuring the stability of the overall structure of the protective door and providing reliable safety protection for construction personnel.

[0017] 3. By setting up moving wheels, the high-strength rubber moving wheels connected to the bottom of the inner rod make the protective door easy to move on the construction site. When the protective door needs to be installed in different locations of the construction elevator, the staff can easily push the protective door to the designated location without the need for additional handling equipment, saving manpower and time costs and improving installation efficiency.

[0018] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0019] The accompanying drawings described below are merely some embodiments. Those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings:

[0020] Figure 1 This is a schematic diagram of the overall structure;

[0021] Figure 2 This is a schematic diagram of the structure after the door panel is opened.

[0022] Figure 3 This is a partial sectional view of the outer and inner rods.

[0023] Figure 4 This is a schematic diagram of the top frame cross-section structure.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 1. Door panel; 2. Outer rod; 3. Inner rod; 4. Top frame; 5. Slider; 6. Lead screw; 7. Motor; 8. Rotating shaft; 9. Bearing; 10. Limiting post; 11. Limiting hole; 12. Handle; 13. Warning sign; 14. Moving wheel; 15. Spring; 16. First inner cavity; 17. First gear; 18. Second gear; 19. Second inner cavity.

[0026] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings.

[0028] In the early stages of construction, the safety doors of construction elevators were relatively simple and basic. At that time, the scale of construction and construction technology were relatively limited. Construction elevators were mainly used for some simple vertical transportation tasks. The safety doors were mostly made of wood and had a relatively simple structure. They were usually a simple wooden door installed at the elevator shaft opening with hinges and controlled by bolts or simple locks. The main function of this type of safety door was to prevent people and objects from accidentally falling into the elevator shaft. However, the protective effect and stability were poor, and it was easy to be damaged. Moreover, it was difficult to guarantee long-term reliability in frequent construction use.

[0029] With the development of the construction industry and the continuous expansion of construction scale, the demand for construction elevators is also increasing. Steel pipe fastener-type safety doors are gradually becoming the mainstream. These safety doors are assembled using steel pipes and fasteners. By connecting the steel pipes to form the door frame and door body structure and fixing them with fasteners, a relatively sturdy safety door is formed. Its advantages are that the materials are easy to obtain and the assembly is convenient. It can be adjusted according to different elevator shaft sizes. However, steel pipe fastener-type safety doors also have some obvious disadvantages, such as poor stability. During use, problems such as fastener corrosion and loosening are prone to occur, leading to door loosening. Moreover, a lot of manpower and resources are required for maintenance, and the safety performance is difficult to guarantee effectively. A slight carelessness may lead to safety accidents.

[0030] To address the problems associated with steel pipe fastener-type safety doors, standardized and modular safety doors have emerged. These doors are manufactured in a standardized manner in factories and then transported to the construction site for assembly. They typically use high-strength materials such as steel, featuring robust structures, good stability, and high safety performance. The design of standardized and modular safety doors is more rational, taking into account various safety factors during construction, such as reliable door locking devices and observation windows. Some safety doors also adopt adjustable connection methods to adapt to elevator shaft openings of different sizes. The emergence of these safety doors has effectively improved the safety protection level of construction elevators, reduced the occurrence of safety accidents, and also increased construction efficiency and reduced maintenance costs.

[0031] With the continuous advancement of construction technology and the increasing demands for safety, adjustable temporary safety doors for construction elevators have gradually become a focus of research and development. Early adjustable safety doors were mainly adjustable in the height direction to adapt to the height requirements of different floor construction methods. By setting an adjustable support structure at the bottom of the door or adopting a telescopic door frame design, the safety door can be raised or lowered as needed. This height-adjustable safety door solves the problem of traditional safety doors needing to be dismantled and reinstalled during ground construction, saving time and labor costs, and also reducing potential safety hazards during dismantling and reinstallation.

[0032] In recent years, adjustable temporary protective doors for construction elevators have seen further development in terms of function and performance. In addition to height adjustment, some protective doors also have width adjustment capabilities. By adopting a telescopic door frame structure or a movable door body connection method, the protective doors can adapt to changes in the width of elevator shafts of different sizes. In this way, the versatility and adaptability of the protective doors are greatly improved. They can not only be reused in different construction projects, but also effectively protect elevator shafts of different sizes in the same project.

[0033] In terms of technological innovation, adjustable construction elevator temporary safety doors utilize advanced materials and manufacturing processes. For example, high-strength aluminum alloys or stainless steel are used, which reduces the weight of the door while improving its strength and corrosion resistance. CNC machining and welding processes ensure dimensional accuracy and structural stability. Furthermore, some safety doors are equipped with intelligent control systems, such as automatic sensor switches and access control systems, further enhancing their ease of use and safety. With continuous technological advancements and the ongoing development of the construction industry, adjustable construction elevator temporary safety doors are expected to achieve further breakthroughs and developments in the following areas:

[0034] Intelligentization and Automation: Future adjustable safety doors may be more intelligent and automated. For example, by integrating sensors, controllers and actuators, the safety doors can be opened and closed automatically, and linked with the operation status of construction elevators. When the elevator arrives at the designated floor, the safety door will open automatically; when the elevator leaves, the safety door will close and lock automatically, thereby further improving the safety and efficiency of construction.

[0035] Multifunctional integration: In addition to basic protective functions, future adjustable safety doors may integrate more functions, such as safety warning lights and voice prompts on the door to enhance safety reminders for construction workers; integrated video monitoring systems to monitor the elevator shaft in real time, making it easier for managers to promptly identify and handle safety hazards; and integrated environmental monitoring functions, such as monitoring air quality, temperature, and humidity, to provide a better working environment for construction workers.

[0036] Green environmental protection and sustainable development: With increasing environmental awareness, future adjustable security doors will pay more attention to green environmental protection and sustainable development, adopting environmentally friendly materials and energy-saving technologies to reduce environmental impact; improve the service life and recyclability of security doors, and reduce resource consumption and waste emissions.

[0037] Personalized Customization: With the increasing diversification of construction projects and the growing demand for personalization, future adjustable security doors will likely place greater emphasis on personalized customization. Customized security door designs and solutions will be provided based on different architectural styles, construction requirements, and user needs to meet the individual requirements of clients.

[0038] Please see Figure 1-4As shown, this embodiment provides an adjustable temporary protective door for construction elevators, including: a door frame assembly, a door body assembly, and an adjustment assembly. The door frame assembly includes two side frames and a top frame 4. The side frames adopt a telescopic structure, including nested inner rods 3 and outer rods 2. The door body assembly includes a door panel 1 and a rotating shaft 8. The upper and lower ends of the rotating shaft 8 are connected to the side walls of the door panel 1. Bearings 9 are connected to the surface of the side frames, and the rotating shaft 8 is connected to the bearings 9. The adjustment assembly includes a lead screw 6 that passes through the top frame 4. A motor 7 is connected to the top of the top frame 4, and a second gear 18 is connected to the bottom of the motor 7. One end of the lead screw 6 is connected to a first gear 17, and the first gear 17 and the second gear 18 are meshed. A slider 5 is connected to the surface of the other end of the lead screw 6, and the slider 5 is connected to the side frame.

[0039] The height of the side frame can be changed by adjusting the relative positions of the inner rod 3 and the outer rod 2 to adapt to different construction elevator door opening sizes. The telescopic structure improves the versatility and adaptability of the safety door. The inner rod 3 and the outer rod 2 are nested together, providing a basic structure for telescopic movement. Bearings 9 are connected to the surface of the side frame, providing support and rotation connection points for the rotating shaft 8 of the subsequent door assembly, allowing the door to rotate around the shaft and realize the opening and closing action. The door panel 1 and the rotating shaft 8 are included. The upper and lower ends of the rotating shaft 8 are connected to the side wall of the door panel 1. Through cooperation with the bearings 9 on the side frame of the door, the door panel 1 can rotate around the rotating shaft 8, facilitating the operation when personnel enter and exit the construction elevator. The door panel 1, as the main body of the safety door, plays a role in blocking and protection. The design of the rotating shaft 8 ensures that the door can be relatively stably installed on the door frame and can rotate flexibly to meet the opening and closing operations of daily use. The motor 7 is installed at the top of the top frame 4. The bottom end of motor 7 is connected to the second gear 18, and one end of lead screw 6 is connected to the first gear 17. The first gear 17 and the second gear 18 are meshed together. When motor 7 rotates, it drives lead screw 6 to rotate through gear transmission. When lead screw 6 rotates, slider 5 will move linearly along lead screw 6. Since slider 5 is connected to the side frame, the linear movement of slider 5 on lead screw 6 can drive the extension and retraction of the side frame, thereby adjusting the width of the door frame. When it is necessary to adjust the size of the door frame, motor 7 is started. Motor 7 drives the second gear 18 to rotate. Since the first gear 17 and the second gear 18 are meshed, the rotation of the second gear 18 will drive the first gear 17 to rotate. The rotation of the first gear 17 will cause the lead screw 6 connected to it to rotate. The rotation of lead screw 6 will cause slider 5 to move along lead screw 6. Since slider 5 is connected to the side frame, the movement of slider 5 will drive the side frame to extend and retract, thereby changing the width of the side frame and realizing the size adjustment of the door frame.

[0040] In this embodiment, the outer rod 2 has multiple limiting holes 11 along its length, and the multiple limiting holes 11 are equidistantly distributed. The inner rod 3 has a first inner cavity 16 inside its top, and a spring 15 is connected inside the first inner cavity 16. One end of the spring 15 is connected to a limiting post 10, and one end of the limiting post 10 passes through the first inner cavity 16 and is located on the surface of the inner rod 3. The limiting post 10 and the limiting holes 11 correspond to each other.

[0041] Multiple limiting holes 11 are provided on the surface of the outer rod 2 along its length, and they are evenly distributed. These limiting holes 11 are designed to position and fix the inner rod 3 at its extension and retraction positions. The evenly distributed arrangement allows the inner rod 3 to be fixed in different positions, thereby enabling adjustments to the side frame at different lengths.

[0042] The first inner cavity 16 provides a space for the limiting post 10 and the spring 15. The function of the spring 15 is to apply an elastic force to the limiting post 10, so that the limiting post 10 tends to extend outward. When the height of the side frame is adjusted, the inner rod 3 extends and retracts relative to the outer rod 2. When the limiting post 10 coincides with the limiting hole 11, the limiting post 10 will be inserted into the limiting hole 11 under the elastic force of the spring 15, thereby fixing the relative position of the inner rod 3 and the outer rod 2. This prevents the relative position of the inner rod 3 and the outer rod 2 from changing unexpectedly due to external forces or other factors during use, and ensures the structural stability of the side frame after extension and retraction.

[0043] The bottom end of the inner rod 3 is connected to a movable wheel 14. The movable wheel 14 is made of high-strength rubber. The function of the movable wheel 14 is to facilitate the movement and adjustment of the entire protective door. Especially on the construction site, when the protective door needs to be installed at different construction elevators, the protective door can be easily pushed by the movable wheel 14. The high-strength rubber material can provide a certain cushioning effect, reduce wear on the ground, and at the same time, it can also prevent vibration and slippage caused by uneven ground to a certain extent, thereby improving the stability and service life of the protective door.

[0044] The top frame 4 has a second inner cavity 19. One end of the lead screw 6 connected to the first gear 17 is located in the second inner cavity 19. The lead screw 6 is threadedly connected to the slider 5. Both the first gear 17 and the second gear 18 are bevel gears.

[0045] The second inner cavity 19 can house and protect part of the lead screw 6 and the first gear 17, preventing them from being damaged by external factors during use. It also makes the overall structure more compact and aesthetically pleasing. When the lead screw 6 rotates, the slider 5 moves along the axial direction of the lead screw 6 due to the threaded connection between the slider 5 and the lead screw 6, thereby driving the side frame to extend and retract. This connection method ensures the accuracy and reliability of the transmission, making the extension and retraction adjustment of the side frame more precise and stable.

[0046] The door panel 1 is connected to a handle 12 and a warning sign 13. The surface of the warning sign 13 is coated with fluorescent paint, and the surface of the handle 12 has anti-slip texture. The function of the handle 12 is to facilitate the opening and closing of the door. The anti-slip texture on the surface can increase the friction between the hand and the handle 12, prevent slipping during operation, and improve the safety and convenience of operation. The surface of the warning sign 13 is coated with fluorescent paint, which is intended to attract people's attention in the dimly lit construction environment, play a warning role, remind people of the existence of the construction elevator, and prevent accidents.

[0047] Working principle:

[0048] When the door frame needs to be adjusted, the inner rod 3 is slid relative to the outer rod 2 manually or with the help of the adjustment component, thereby changing the height of the side frame. When the inner rod 3 extends or retracts to the appropriate position, the limiting post 10 coincides with the corresponding limiting hole 11. Under the action of the spring 15, the limiting post 10 inserts into the limiting hole 11, fixing the relative position of the inner rod 3 and the outer rod 2, ensuring the stability of the side frame height and preventing changes due to external forces during use. Then, the lead screw 6 in the adjustment component rotates, driving the slider 5, which is threaded to it, to move linearly. The slider 5 is connected to the side frame, so when the slider 5 moves, it will cause the side frame to extend or retract in the horizontal direction, thereby adjusting the width of the door frame.

[0049] This utility model is not limited to the above-described embodiments. Anyone should know that structural changes made under the guidance of this utility model, and any technical solutions that are the same as or similar to this utility model, fall within the protection scope of this utility model. Technical aspects, shapes, and structures not described in detail in this utility model are all publicly known technologies.

Claims

1. An adjustable temporary protective door for a construction elevator, characterized in that, include: Door frame assembly, door body assembly, and adjustment assembly; The door frame assembly includes two side frames and a top frame (4). The side frames adopt a telescopic structure, including nested inner rods (3) and outer rods (2). The door assembly includes a door panel (1) and a rotating shaft (8). The upper and lower ends of the rotating shaft (8) are connected to the side wall of the door panel (1). The side frame surface is connected to a bearing (9), and the rotating shaft (8) is connected to the bearing (9). The adjustment assembly includes a lead screw (6) that passes through the top frame (4). A motor (7) is connected to the top of the top frame (4). A second gear (18) is connected to the bottom of the motor (7). A first gear (17) is connected to one end of the lead screw (6), and the first gear (17) and the second gear (18) are meshed together. A slider (5) is connected to the surface of the other end of the lead screw (6), and the slider (5) is connected to the side frame.

2. The adjustable temporary protective door for construction elevators according to claim 1, characterized in that: The outer rod (2) has multiple limiting holes (11) along its length direction, and the multiple limiting holes (11) are distributed at equal intervals.

3. An adjustable temporary protective door for a construction elevator according to claim 2, characterized in that: The inner rod (3) has a first inner cavity (16) inside the top. A spring (15) is connected inside the first inner cavity (16). One end of the spring (15) is connected to a limiting post (10). One end of the limiting post (10) passes through the first inner cavity (16) and is located on the surface of the inner rod (3). The limiting post (10) corresponds to the limiting hole (11).

4. An adjustable temporary protective door for a construction elevator according to claim 3, characterized in that: The bottom end of the inner rod (3) is connected to a movable wheel (14), which is made of high-strength rubber.

5. An adjustable temporary protective door for a construction elevator according to claim 1, characterized in that: The top frame (4) has a second inner cavity (19) inside. One end of the lead screw (6) connected to the first gear (17) is located in the second inner cavity (19). The lead screw (6) is threadedly connected to the slider (5).

6. An adjustable temporary protective door for a construction elevator according to claim 5, characterized in that: Both the first gear (17) and the second gear (18) are bevel gears.

7. An adjustable temporary protective door for a construction elevator according to claim 1, characterized in that: The door panel (1) is connected to a handle (12) and a warning sign (13). The surface of the warning sign (13) is coated with fluorescent paint, and the surface of the handle (12) is provided with anti-slip texture.

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